A city skyline with a prominent arch bridge and a lit bridge over a calm river reflecting city lights.

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10 Aug - 11 Aug
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11 Aug - 12 Aug
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14 Aug - 16 Aug
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21 Aug - 23 Aug

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Our top choices for O'Fallon hotels

Reserve now, pay later
Breakfast included
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Pet-friendly
Pool

1. Clayton Plaza Hotel & Extended Stay

Clayton Plaza Hotel & Extended Stay
Clayton
United States
Tong
Rp1.639.824
Rp1.914.299 total
includes taxes & fees
30 Aug - 31 Aug
Clayton Plaza Hotel & Extended Stay

2. Drury Inn & Suites St. Louis St. Peters

Drury Inn & Suites St. Louis St. Peters
St. Peters
United States
DANA
Rp1.968.491
Rp2.262.780 total
includes taxes & fees
16 Aug - 17 Aug
Drury Inn & Suites St. Louis St. Peters

3. Comfort Inn & Suites St. Louis - O'Fallon

Comfort Inn & Suites St. Louis - O'Fallon
O'Fallon
United States
Joy
Rp1.480.440
Rp1.746.179 total
includes taxes & fees
30 Aug - 31 Aug
Comfort Inn & Suites St. Louis - O'Fallon

4. Hilton Garden Inn St. Louis/O'Fallon MO

Hilton Garden Inn St. Louis/O'Fallon MO
O'Fallon
United States
Kassie
Rp2.480.166
Rp2.940.856 total
includes taxes & fees
17 Aug - 18 Aug
Hilton Garden Inn St. Louis/O'Fallon MO

5. WoodSpring Suites St Peters-OFallon

WoodSpring Suites St Peters-OFallon
St. Peters
United States
Susan
Rp1.391.742
Rp1.647.801 total
includes taxes & fees
30 Aug - 31 Aug
WoodSpring Suites St Peters-OFallon

6. Pear Tree Inn St. Louis Airport

Pear Tree Inn St. Louis Airport
St. Ann
United States
Darren
Rp1.610.551
Rp1.896.230 total
includes taxes & fees
17 Aug - 18 Aug
Pear Tree Inn St. Louis Airport

7. Holiday Inn Express & Suites St Peters by IHG

Holiday Inn Express & Suites St Peters by IHG
St. Peters
United States
Serah
Rp2.111.846
Rp2.538.170 total
includes taxes & fees
16 Aug - 17 Aug
Holiday Inn Express & Suites St Peters by IHG

8. Sleep Inn & Suites O'Fallon MO - Technology Drive

Sleep Inn & Suites O'Fallon MO - Technology Drive
O'Fallon
United States
Josh
Rp1.391.671
Rp1.641.475 total
includes taxes & fees
11 Aug - 12 Aug
Sleep Inn & Suites O'Fallon MO - Technology Drive

9. Super 8 by Wyndham O'Fallon MO/St. Louis Area

Super 8 by Wyndham O'Fallon MO/St. Louis Area
O'Fallon
United States
Shelly
Rp1.156.146
Rp1.363.673 total
includes taxes & fees
16 Aug - 17 Aug
Super 8 by Wyndham O'Fallon MO/St. Louis Area

10. The Wildwood Hotel

The Wildwood Hotel
Wildwood
United States
Hailey
Rp1.578.515
Rp1.838.780 total
includes taxes & fees
24 Aug - 25 Aug
The Wildwood Hotel

11. Motel 6 Hazelwood, MO

Motel 6 Hazelwood, MO
Hazelwood
United States
Gwen
Rp933.254
Rp1.140.789 total
includes taxes & fees
8 Sept - 9 Sept
Motel 6 Hazelwood, MO

12. Holiday Inn Express St. Louis West - O'Fallon by IHG

Holiday Inn Express St. Louis West - O'Fallon by IHG
O'Fallon
United States
Sheria
Rp1.879.185
Rp2.216.498 total
includes taxes & fees
16 Aug - 17 Aug
Holiday Inn Express St. Louis West - O'Fallon by IHG

13. Staybridge Suites O'Fallon Chesterfield by IHG

Staybridge Suites O'Fallon Chesterfield by IHG
O'Fallon
United States
Norman
Rp2.040.258
Rp2.406.484 total
includes taxes & fees
7 Sept - 8 Sept
Staybridge Suites O'Fallon Chesterfield by IHG

14. Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham

Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham
Fenton
United States
Steven
Rp1.688.582
Rp1.950.057 total
includes taxes & fees
13 Aug - 14 Aug
Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham

15. Ameristar Casino Resort and Spa

Ameristar Casino Resort and Spa
St. Charles
United States
Tracey
Rp2.640.998
Rp3.383.340 total
includes taxes & fees
7 Sept - 8 Sept
Ameristar Casino Resort and Spa

16. Hollywood Casino & Hotel St. Louis

Hollywood Casino & Hotel St. Louis
Riverport
United States
WAYNE
Rp1.787.676
Rp2.617.510 total
includes taxes & fees
8 Sept - 9 Sept
Hollywood Casino & Hotel St. Louis

17. TownePlace Suites by Marriott St. Louis Chesterfield

TownePlace Suites by Marriott St. Louis Chesterfield
Chesterfield
United States
Cindy
Rp2.290.816
Rp2.688.570 total
includes taxes & fees
28 Aug - 29 Aug
TownePlace Suites by Marriott St. Louis Chesterfield

18. Courtyard by Marriott St. Louis St. Peters

Courtyard by Marriott St. Louis St. Peters
St. Peters
United States
Kimberley
Rp2.158.378
Rp2.592.124 total
includes taxes & fees
30 Aug - 31 Aug
Courtyard by Marriott St. Louis St. Peters

19. Hampton Inn St. Charles St. Peters

Hampton Inn St. Charles St. Peters
St. Charles
United States
Michelle
Rp1.746.389
Rp2.007.072 total
includes taxes & fees
30 Aug - 31 Aug
Hampton Inn St. Charles St. Peters

20. Holiday Inn Express & Suites Wentzville St Louis West by IHG

Holiday Inn Express & Suites Wentzville St Louis West by IHG
Wentzville
United States
Debbie
Rp2.416.095
Rp2.878.867 total
includes taxes & fees
16 Aug - 17 Aug
Holiday Inn Express & Suites Wentzville St Louis West by IHG
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Stay near popular O'Fallon attractions

9-11 Memorial

7.6/10 (44 reviews)
This steel monument, crafted from World Trade Centre wreckage, honours first responders who perished on 9/11. Visitors can also view a piece of the WTC's red steel core inside the O'Fallon Municipal Centre.
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CarShield Field

7.0/10 (20 reviews)
CarShield Field offers an intimate baseball experience as home to the O'Fallon Hoots. Enjoy evening games during summer months when the atmosphere is most vibrant and temperatures cooler.
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Alligator Creek Aquatic Center

6.4/10 (16 reviews)
This family-friendly aquatic centre features a 600-foot lazy river and interactive water playground in O'Fallon, Missouri. Enjoy the diving board, water slides, and shaded seating areas for a refreshing summer retreat.
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Golf Headquarters

This all-in-one golf complex features a Toptracer driving range, executive course, and mini-golf for all skill levels. Practice your swing under the lights or join a tournament at this versatile family destination.
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Learn more about O'Fallon

Stroll through Civic Park's butterfly garden before catching a local baseball game at CarShield Field. Just 30 minutes from St. Louis, this family-friendly suburb offers excellent shopping at Streets of Camelot and refreshing hikes along Dardenne Creek.

See all hotels in O'Fallon
A city skyline with a prominent arch bridge and a lit bridge over a calm river reflecting city lights.

Top O'Fallon Hotel Reviews

Pear Tree Inn St. Louis Airport

Pear Tree Inn St. Louis Airport

10/10 Excellent
"A one night stay pre-flight. Met all our needs."
Richard 1-night trip
Posted 2 hours ago
Pear Tree Inn St. Louis Airport
Drury Plaza Hotel St. Louis Chesterfield

Drury Plaza Hotel St. Louis Chesterfield

8/10 Good
"Overall everything was welcoming. Room wasn’t the cleanest but it was an easy fix and happy hour was nice as well."
Christie 1-night trip
Posted 2 hours ago
Drury Plaza Hotel St. Louis Chesterfield
The Wildwood Hotel

The Wildwood Hotel

8/10 Good
"Staff were so helpful and an initiating. Used this hotel as a stop over. I was pleasantly surprised."
Lisa 1-night trip
Posted 5 hours ago
The Wildwood Hotel
Wingate by Wyndham St. Louis Airport

Wingate by Wyndham St. Louis Airport

10/10 Excellent
"Pretty good stay overall. Clean. Staff was helpful"
Ontorio 1-night trip
Posted 6 hours ago
Wingate by Wyndham St. Louis Airport
Super 8 by Wyndham O'Fallon MO/St. Louis Area

Super 8 by Wyndham O'Fallon MO/St. Louis Area

10/10 Excellent
"The rooms was clean !"
Diamond 1-night trip
Posted 20 hours ago
Super 8 by Wyndham O'Fallon MO/St. Louis Area
Best Western St. Louis-Kirkwood Route 66

Best Western St. Louis-Kirkwood Route 66

8/10 Good
"Good stay. Enjoyed the hotel while I was there. The room had a vape on the floor by the balcony and then one of the pillows had dirty handprints on it. Other than that good stay decent breakfast. All around good time. Would recommend"
Sarah 2-night trip
Posted 2 days ago
Best Western St. Louis-Kirkwood Route 66
Holiday Inn Express St. Louis West - O'Fallon by IHG

Holiday Inn Express St. Louis West - O'Fallon by IHG

10/10 Excellent
"Staffs are kind and rooms are clean and breakfast are good."
Sangrae 1-night trip
Posted 2 days ago
Holiday Inn Express St. Louis West - O'Fallon by IHG
Comfort Inn & Suites St. Louis - O'Fallon

Comfort Inn & Suites St. Louis - O'Fallon

10/10 Excellent
"Above and beyond service guest laundry available hotel front desk went extra mile by assisting with some paperwork I needed printing"
Kyron 2-night trip
Posted 5 days ago
Comfort Inn & Suites St. Louis - O'Fallon

More cheap stays in O'Fallon

Motel 6 Hazelwood, MO

Motel 6 Hazelwood, MO

5781 Campus Ct Hazelwood MO
Rp933.254
Rp1.140.789 total
8 Sept - 9 Sept
includes taxes & fees
8.4/10 Very good! (2,149 reviews)
Motel 6 Hazelwood, MO
Days Inn and Suites by Wyndham St. Louis/Westport Plaza

Days Inn and Suites by Wyndham St. Louis/Westport Plaza

1970 Craig Rd Maryland Heights MO
Rp1.216.996
Rp1.411.569 total
25 Aug - 26 Aug
includes taxes & fees
Days Inn and Suites by Wyndham St. Louis/Westport Plaza
Sleep Inn & Suites O'Fallon MO - Technology Drive

Sleep Inn & Suites O'Fallon MO - Technology Drive

1147 Technology Drive O'Fallon MO
Rp1.391.671
Rp1.641.475 total
11 Aug - 12 Aug
includes taxes & fees
Sleep Inn & Suites O'Fallon MO - Technology Drive
Pear Tree Inn St. Louis Airport

Pear Tree Inn St. Louis Airport

10810 Pear Tree Ln St. Ann MO
Rp1.610.551
Rp1.896.230 total
17 Aug - 18 Aug
includes taxes & fees
9.2/10 Wonderful! (3,148 reviews)
Pear Tree Inn St. Louis Airport
Hampton Inn St. Charles St. Peters

Hampton Inn St. Charles St. Peters

3720 W Clay St St. Charles MO
Rp1.746.389
Rp2.007.072 total
30 Aug - 31 Aug
includes taxes & fees
Hampton Inn St. Charles St. Peters
Best Western Plus Fenton

Best Western Plus Fenton

1680 Fenton Business Park Ct Fenton MO
Rp1.852.876
Rp2.139.850 total
12 Aug - 13 Aug
includes taxes & fees
9/10 Wonderful! (429 reviews)
Best Western Plus Fenton

Find out more about O'Fallon

Top reasons to visit O'Fallon

  • Family-Friendly Activities: O'Fallon is perfect for families, offering a range of engaging activities at O'Fallon Sports.
  • Outdoor Adventures: Enjoy scenic lakes, cycling along the Katy Trail, and beach outings in nearby parks.
  • Charming Neighbourhoods: Explore warm, welcoming neighbourhoods that create lasting memories.
  • Rich Historical Experience: Visit interactive museums that showcase the city's vibrant history.
  • Variety of Accommodations: Choose from numerous hotels and motels, including pet-friendly and LGBTQIA welcoming options.

Find great hotels near O'Fallon

Explore a variety of accommodation options in O'Fallon, Missouri, where you'll find an array of hotels and motels tailored to meet the needs of both leisure and business travellers. Enjoy pet-friendly options and LGBTQIA welcoming environments, ensuring a comfortable stay. Whether you're searching for a hotel, vacation rental, or specific accommodations in O'Fallon, you'll discover the perfect place to unwind and enjoy your visit.

  • Sonesta ES Suites St. Louis - Chesterfield: Situated 23km from O'Fallon, the 3-star Sonesta ES Suites St. Louis - Chesterfield is an inviting option for travellers seeking a pet-friendly getaway. With a guest rating of 8.0 out of 10, this hotel offers spacious suites that encourage relaxation. The property features a welcoming atmosphere for pets, with amenities including food and water bowls, alongside a flexible pet policy. Ideal for families and those travelling with furry companions, the hotel provides a homely experience, making it a great base for exploring the surrounding areas.
  • Larkspur Landing Extended Stay Suites St. Louis Riverport - Airport West: Located 21km from O'Fallon, Larkspur Landing Extended Stay Suites St. Louis Riverport - Airport West is a solid choice for business travellers and those with pets. This 3-star hotel combines convenience with comfort, offering rooms equipped for extended stays. With a pet policy that includes waived fees for service animals and an accommodating stance towards pets, guests can enjoy a stress-free stay. The property’s proximity to the airport facilitates easy travel, making it particularly suitable for business trips.
  • WoodSpring Suites St Louis St Charles: A budget-friendly option just 16km from O'Fallon, WoodSpring Suites St Louis St Charles caters to both business and leisure travellers. This hotel embraces a pet-friendly policy, allowing dogs with certain restrictions. It provides essential amenities for a comfortable stay, including well-furnished rooms designed for longer visits. The atmosphere is relaxed yet functional, making it an appealing choice for those looking to balance affordability with convenience during their stay in the area.

Where to stay near O'Fallon

O'Fallon, Missouri, offers a delightful blend of family-friendly experiences and outdoor adventures. Families can enjoy various activities at O'Fallon Sports, while the city's convenient location provides easy access to nearby attractions. Explore charming neighbourhoods that exude warmth and hospitality, perfect for creating lasting memories. With its rich history and vibrant atmosphere, O'Fallon is an ideal destination for a memorable vacation that caters to both relaxation and exploration.

  • St. Charles: Located 18km from O'Fallon, St. Charles is a charming city known for its rich history and vibrant atmosphere. Visitors flock here for a variety of experiences, from family outings to romantic getaways. The city features an array of attractions, including a prominent arena entertainment facility, engaging theatres, and a bustling shopping mall centre. St. Charles is also home to historic sites and picturesque streets that invite exploration. Peak visitor seasons occur in March to April and July, making it an ideal time to enjoy the local events and festivals.
  • Chesterfield: Situated 21km away from O'Fallon, Chesterfield offers a delightful mix of family-friendly activities and entertainment options. This city is particularly popular in April and from June to July, attracting visitors eager to experience its vibrant theatre scene, exciting music concerts, and thrilling arcade adventure zones. Chesterfield is close to a renowned theme park and impressive sports facilities, ensuring there's something for everyone. The city's lively atmosphere and diverse attractions make it a fantastic destination for those seeking both relaxation and adventure.
  • Maryland Heights: Approximately 26km from O'Fallon, Maryland Heights is a vibrant city that caters to families and entertainment seekers alike. With peak visitor numbers in April and June to July, this area buzzes with activity during the warmer months. Visitors can enjoy a variety of attractions, such as a large arena entertainment facility, theatres, and shopping mall centres. The city's local landmarks, including event conference venues and sports facilities, provide ample opportunities for recreation and leisure. Maryland Heights is a perfect spot for those looking to immerse themselves in city life while enjoying family-friendly fun.

Things to do in O'Fallon

Shopping

In O'Fallon, visit the O'Fallon Plaza for a mix of shops and local boutiques. If you're up for a drive, check out the St. Louis Premium Outlets, located around 48km away, where you can find discounted designer brands and more shopping options.

Recreation

The Oasis Wellness Center offers a tranquil atmosphere with yoga classes, massage therapy, and holistic treatments to rejuvenate your body and mind. For recreational activities, the O'Fallon Sports Park boasts walking trails, sports fields, and picnic areas, ideal for relaxation and outdoor fun amidst nature.

Adventure

Explore the scenic trails at Fort Zumwalt Park, ideal for hiking and nature walks. Visit the O'Fallon Sports Park for various outdoor sports and activities, including disc golf and playgrounds. For a more thrilling experience, try the nearby Go Ape Treetop Adventure for zip-lining and treetop obstacles.

Nightlife

Explore the vibrant nightlife at The O’Fallon Brewery, where you can enjoy local brews and a relaxed atmosphere. For a lively evening, visit The Firehouse Bar & Grill, offering tasty bites and live entertainment, perfect for unwinding after a day of sightseeing.

*Distances are measured in a straight line; actual driving distances may vary depending on the route.

Booking tips and Expedia advantages for O'Fallon

To save money on your visit to O'Fallon, consider travelling during the off-peak months from December to February, when accommodation prices are lower. Take advantage of free attractions like the 9-11 Memorial and August A. Busch Memorial Conservation Area. For transport, buses are a cost-effective option. Book on a Monday for the best rates, and use Expedia’s search tool to find eco-friendly hotels and package deals that bundle flights and activities for additional savings. Always look out for advanced purchase discounts and special rates for bargain hunters.

  • The most and least expensive months on average to stay in a hotel: The cheapest months to stay in O'Fallon are December to February, where the prices are slightly lower. This is in comparison to May to July, where prices are slightly higher.
  • The most and least expensive days on average to stay in a hotel: The least expensive day to stay in O'Fallon is Monday. The most expensive day to stay in O'Fallon is Saturday.
  • Find cheap hotels on Expedia: Utilise Expedia’s search tool to refine your preferences, such as your budget, preferred location, and the type of accommodation you desire. For instance, selecting the Eco-certified filter will showcase sustainable and environmentally-friendly hotels that are currently available. To discover the best prices and deals, sort the price filter from low to high.
  • Consider bundling your trip: You may find that you can save money by combining your hotel booking in O'Fallon with your flights and activities through an Expedia package.

Find the best attractions near O'Fallon

O'Fallon, Missouri, is a delightful destination for families and outdoor enthusiasts alike, offering a mix of scenic lakes, charming neighbourhoods, and nearby state parks. Visitors can enjoy various outdoor activities, including beach outings and nature exploration. Notable attractions include O'Fallon Park, ensuring a wonderful experience for all travellers seeking relaxation and adventure in this vibrant city.

  • Westport Plaza: Located 26km from O'Fallon, Westport Plaza offers a vibrant urban atmosphere with a mix of shops, restaurants, and entertainment venues. Enjoy the lively city vibes as you explore the area, perfect for an afternoon of leisure or a night out.
  • Historic Main Street: Just 19km away, Historic Main Street boasts charming architecture and a variety of quaint boutiques and eateries. This street captures the essence of local history while providing a delightful stroll through the heart of the community.
  • August A. Busch Memorial Conservation Area: Situated 11km from O'Fallon, this conservation area is ideal for families seeking outdoor excursions. Enjoy the natural beauty, friendly atmosphere, and engaging wildlife, making it a lovely spot for a picnic or nature walk.

Best time to go to O'Fallon

The best time to visit O'Fallon can depend on the weather and when visitor numbers rise and fall. The hottest average temperature in O'Fallon falls in July, when visitor numbers are slightly high and weather is mostly sunny with light rain. The coolest average temperature in O'Fallon falls in January, visitor numbers are average and weather is mostly cloudy with light rain.

calendar iconCalendar Monthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinessoccupation rate iconOccupancyprice iconPricing
January31.1°F (-0.5°C)Light RainMostly CloudyAverageSlightly Low
February34.2°F (1.2°C)Light RainMostly SunnyAverageSlightly Low
March45.9°F (7.7°C)Light RainMostly SunnyAverageAverage
April55.6°F (13.1°C)Light RainMostly SunnySlightly HighAverage
May65.8°F (18.8°C)Light RainMostly SunnyAverageSlightly High
June75.4°F (24.1°C)Light RainMostly SunnySlightly HighSlightly High
July78.4°F (25.8°C)Light RainMostly SunnySlightly HighSlightly High
August76.6°F (24.8°C)Light RainMostly SunnyAverageAverage
September70.5°F (21.4°C)Light RainMostly SunnyAverageAverage
October57.9°F (14.4°C)Light RainMostly SunnySlightly LowAverage
November45.7°F (7.6°C)Light RainMostly SunnySlightly LowAverage
December37.0°F (2.8°C)Light RainMostly SunnySlightly LowSlightly Low

The nearest major airports for your trip to O'Fallon

Flying into O'Fallon, Missouri, is convenient via three major airports. St. Louis Lambert International Airport (STL) is 31km away, with nearby hotels like The Ritz-Carlton and Ameristar Casino Resort, both approximately 11km from the airport. Columbia Regional Airport (COU) is located 132km from O'Fallon, with hotel options such as The Broadway Columbia - a DoubleTree by Hilton, 18km away. Springfield Abraham Lincoln Capital Airport (SPI) is 145km distant, with hotels including President Abraham Lincoln Springfield - DoubleTree by Hilton, just 5km from the airport. Each hotel offers various transportation services to ensure easy access to the respective airports.

Frequently asked questions

What's the best place for a stay in O'Fallon?
Sleep Inn & Suites O'Fallon MO - Technology Drive is one of the top choices for your stay based on our traveller data. This hotel offers free breakfast and an indoor pool. Other good options for your stay include Holiday Inn Express St. Louis West - O'Fallon by IHG and Comfort Inn & Suites St. Louis - O'Fallon. See all available top hotels, or vacation rentals in O'Fallon.
If I need to cancel my hotel reservation in O'Fallon, will I receive a refund?
Yes! Most hotel room reservations are refundable provided that you cancel before the hotel's cancellation deadline, which is often 24 or 48 hours before your check-in date. If your reservation is non-refundable, you might be able to still cancel and be given a refund within a 24-hour period of booking. Filter your search by fully refundable to find flexible hotel deals in O'Fallon.
What's the best family accommodation in O'Fallon?
Residence Inn by Marriott O'Fallon is a hotel with an indoor pool and in-room kitchens, and it's a top choice on Expedia for families. Also, children of all ages will enjoy a visit to Alligator Creek Aquatic Center. Find more child-friendly accommodations in O'Fallon.
What is the top LGBTQ-friendly hotel in O'Fallon?
Residence Inn by Marriott O'Fallon is a top LGBTQ-friendly hotel, and features free breakfast and in-room kitchens. Staybridge Suites O'Fallon Chesterfield by IHG and Holiday Inn Express St. Louis West - O'Fallon by IHG are other good choices for your holiday. See all available hotels listed as LGBTQ-friendly in O'Fallon.
What's the best dog-friendly accommodation option in O'Fallon?
Super 8 by Wyndham O'Fallon MO/St. Louis Area is a top hotel for people travelling with their pets, and offers an indoor pool and free WiFi for its human guests. Other good choices to stay with your pet include Comfort Inn & Suites St. Louis - O'Fallon and Residence Inn by Marriott O'Fallon. See more pet-friendly hotel accommodations in O'Fallon.
What are some accommodation options with pools in O'Fallon?
Sleep Inn & Suites O'Fallon MO - Technology Drive is a top hotel with a pool, free full breakfast and free WiFi. Residence Inn by Marriott O'Fallon is another choice that offers an on-site pool. View all hotels with pools in O'Fallon.
What is staying in O'Fallon like?
Visitors to O'Fallon will definitely enjoy the shopping and restaurants. Tourists can also enjoy the city's baseball games, cafés and lake views. Top sights in the area include St. Louis Union Station, Busch Stadium and Gateway Arch. In O'Fallon, there are 27 hotels and other accommodation options to choose from. Find out more about O'Fallon.
What should I do while I'm visiting O'Fallon?
Favourite places to visit include CarShield Field, Mississippi River and 9-11 Memorial. A couple of additional sights to add to your itinerary are Alligator Creek Aquatic Center and Golf Headquarters. Take a look at what more there is to see and do in Expedia's O'Fallon guide.
What's the weather like in O'Fallon?
The hottest months are usually July and August, with an average temperature of 24°C, while the coldest months are January and February, with an average of 3°C. Average annual precipitation for O'Fallon is 1172 mm.

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