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O'Fallon

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O'Fallon Flights as Low as $61

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Frontier Airlines
Tue, Mar 31 - Wed, Apr 15
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$61 Roundtrip, found 1 hour ago
$61
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Mar 31 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Apr 15, priced at $61 found 1 hour ago
Frontier Airlines
Wed, Apr 1 - Wed, Apr 8
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$76 Roundtrip, found 1 hour ago
$76
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Wed, Apr 1 from Denver Intl. to Lambert-St. Louis Intl., returning Wed, Apr 8, priced at $76 found 1 hour ago
Frontier Airlines
Thu, Apr 2 - Wed, Apr 15
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$79 Roundtrip, found 1 hour ago
$79
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Apr 2 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Apr 15, priced at $79 found 1 hour ago
Frontier Airlines
Wed, Apr 1 - Sat, Apr 25
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$81 Roundtrip, just found
$81
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Apr 1 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Apr 25, priced at $81 just found
Frontier Airlines
Sat, Apr 18 - Sat, May 2
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$88 Roundtrip, found 1 hour ago
$88
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Apr 18 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, May 2, priced at $88 found 1 hour ago
Delta
Wed, Apr 29 - Tue, May 5
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$137 Roundtrip, found 1 hour ago
$137
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Apr 29 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Tue, May 5, priced at $137 found 1 hour ago
American Airlines
Wed, Apr 29 - Tue, May 5
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 1 hour ago
$159
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Wed, Apr 29 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Tue, May 5, priced at $159 found 1 hour ago
Frontier Airlines
Mon, Apr 20 - Mon, May 4
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 15 hours ago
$159
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Mon, Apr 20 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Mon, May 4, priced at $159 found 15 hours ago
Frontier Airlines
Mon, Apr 13 - Thu, Apr 30
IAD
Washington Dulles Intl.
STL
Lambert-St. Louis Intl.
$180 Roundtrip, found 1 hour ago
$180
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Apr 13 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Thu, Apr 30, priced at $180 found 1 hour ago
Frontier Airlines
Mon, Apr 13 - Wed, Apr 29
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$180 Roundtrip, found 1 hour ago
$180
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Apr 13 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Wed, Apr 29, priced at $180 found 1 hour ago
United
Wed, Apr 1 - Wed, Apr 8
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$190 Roundtrip, found 1 hour ago
$190
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Apr 1 from Denver Intl. to Lambert-St. Louis Intl., returning Wed, Apr 8, priced at $190 found 1 hour ago
Frontier Airlines
Thu, Apr 23 - Thu, May 14
LGA
LaGuardia
STL
Lambert-St. Louis Intl.
$191 Roundtrip, found 4 days ago
$191
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Apr 23 from LaGuardia to Lambert-St. Louis Intl., returning Thu, May 14, priced at $191 found 4 days ago
Frontier Airlines
Thu, Apr 9 - Mon, Apr 27
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$210 Roundtrip, found 1 hour ago
$210
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Apr 9 from San Francisco Intl. to Lambert-St. Louis Intl., returning Mon, Apr 27, priced at $210 found 1 hour ago
Bargain Flight
Tue, Apr 7 - Sat, Apr 18
DCA
Ronald Reagan Washington National
STL
Lambert-St. Louis Intl.
$220 Roundtrip, found 1 hour ago
$220
Roundtrip
found 1 hour ago
Select Bargain Flight flight, departing Tue, Apr 7 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Sat, Apr 18, priced at $220 found 1 hour ago
Delta
Tue, Apr 28 - Fri, May 15
DAL
Love Field
STL
Lambert-St. Louis Intl.
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Apr 28 from Love Field to Lambert-St. Louis Intl., returning Fri, May 15, priced at $278 found 1 day ago
Alaska Airlines
Tue, Apr 7 - Tue, Apr 21
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$331 Roundtrip, found 1 hour ago
$331
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Tue, Apr 7 from San Francisco Intl. to Lambert-St. Louis Intl., returning Tue, Apr 21, priced at $331 found 1 hour ago

Cheap Flights to O'Fallon

Fall in love at first flight with your vacation to O'Fallon by saving a ton of cash on your last-minute cheap flight. There’s no more scouring the internet for a good deal—book your flight to O'Fallon on Hotwire, and you’ll be up, up, and on a getaway in no time.

Because once the wheels are down in O'Fallon, the good times start rolling. So buckle up, you’re in for a fun ride.

Frequently Asked Questions About flights to O'Fallon

Don’t waste your time on endless searches for cheap airline tickets oneway or roundtrip. We’ll have you on your way to O'Fallon with a tiny bag of pretzels in your hand before you can say “tray tables in the upright position”—and for a ticket price that works for your vacay budget.

So all you have to worry about is where you’re headed after the STL airport.

What is the cheapest month to fly to O'Fallon?

Airline ticket prices fluctuate all the time, depending on the day of the week or the month of the year. The cheapest round trip flights to O'Fallon are in March, but when you book your flight on Hotwire, savings are always in season.

How many airlines fly to O'Fallon?

Variety is the spice of life, even when it comes to booking your next trip. Want options for airlines? You’ll find 15 to choose from for your flight to O'Fallon.

What airport is best to fly into O'Fallon?

When you’re planning your trip to O'Fallon, convenience is the name of the game. Luckily, O'Fallon Spirit of St. Louis Airport is nearby so you can deplane and get going on checking off everything on your O'Fallon must-do list.

How much are flights to O'Fallon?

Got very cheap flights on your vacation itinerary? When you book your airline tickets to O'Fallon on Hotwire, you may just get what’s on your getaway wish list. With tickets as low as $61, you’ll have leftover cash for at least a magazine and a bottle of water at the airport book store.

How to get cheap flights to O'Fallon?

The trick to saving a stack of cash on your flight to O'Fallon? Snatch up that Hotwire flight deal when you see a killer rate because it could be gone in a flash. And with flights as low as $61 right now, why wait?

O'Fallon Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$61

Last Minute Hotel Deals in O'Fallon

Sleep Inn & Suites O'Fallon MO - Technology Drive

Sleep Inn & Suites O'Fallon MO - Technology Drive

2.5 out of 5
1147 Technology Drive O'Fallon MO
Book a stay at this business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
9/10 Wonderful! (1,002 reviews)
The breakfast was decent. Room appeared clean but smelled like fish! Staff was good

Reviewed on Mar 10, 2026

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Sleep Inn & Suites O'Fallon MO - Technology Drive
Holiday Inn Express St. Louis West - O'Fallon by IHG

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

2.5 out of 5
1175 Technology Dr O'Fallon MO
Book a stay at this business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff in our reviews. ...
8.6/10 Excellent! (880 reviews)
This is the second time we've stayed here and we love the rooms. They are renovating. The pool both times was green, slimy on the bottom at the deep end.

Reviewed on Mar 9, 2026

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

Comfort Inn & Suites St. Louis - O'Fallon

2.5 out of 5
100 Comfort Inn Ct O'Fallon MO
Book a stay at this business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean ...
7.6/10 Good! (1,006 reviews)
Brian at the front desk was very friendly and helpful

Reviewed on Mar 9, 2026

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Comfort Inn & Suites St. Louis - O'Fallon
Staybridge Suites O'Fallon Chesterfield by IHG

Staybridge Suites O'Fallon Chesterfield by IHG

3 out of 5
1155 Technology Drive O'Fallon MO
Stay at this hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff in our reviews. Popular attractions Weldon ...
8.6/10 Excellent! (422 reviews)
The room was very comfortable I particularly liked the choice of pillows

Reviewed on Mar 11, 2026

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Staybridge Suites O'Fallon Chesterfield by IHG
Hollywood Casino & Hotel St. Louis

Hollywood Casino & Hotel St. Louis

3.5 out of 5
777 Casino Center Drive Maryland Heights MO
Book a stay at this business-friendly hotel in Maryland Heights. Enjoy free parking, 7 restaurants, and a casino. Our guests praise the helpful staff and the ...
8.4/10 Very Good! (2,219 reviews)
Only complaint is that we’re in 2026 and the tvs don’t come with Netflix

Reviewed on Mar 10, 2026

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Hollywood Casino & Hotel St. Louis
Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham

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

3 out of 5
1088 South Highway Drive Fenton MO
Book a stay at this business-friendly hotel in Fenton. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
8/10 Very Good! (1,126 reviews)
Room was not clean. Stains on the sheets stains on the shower curtains not to mention the sink or the tub would not drain! No toilet paper in the bathrooms just a half roll left on the holder. Two towels for a family of four the whole stay. They didn't even have towels in the pool area. And the pool ...

Reviewed on Mar 10, 2026

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Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham
Pear Tree Inn St. Louis Airport

Pear Tree Inn St. Louis Airport

2.5 out of 5
10810 Pear Tree Ln St. Ann MO
Book a stay at this business-friendly hotel in St. Ann. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful staff ...
9.4/10 Exceptional! (2,856 reviews)
Breakfast was plain, but plentiful

Reviewed on Mar 10, 2026

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Pear Tree Inn St. Louis Airport
Best Western St. Louis-Kirkwood Route 66

Best Western St. Louis-Kirkwood Route 66

3.5 out of 5
1200 S Kirkwood Road Kirkwood MO
Book a stay at this business-friendly hotel in Kirkwood. Enjoy free parking, an outdoor pool, and room service. Our guests praise the breakfast and the helpful ...
8.4/10 Very Good! (1,436 reviews)
Room was nice, clean, mostly quiet. As soon as we stepped off the elevator we could tell that someone had been smoking pot. That odor finally cleared after about 2 hours.

Reviewed on Mar 10, 2026

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Best Western St. Louis-Kirkwood Route 66
See all 957 properties in O'Fallon
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.