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O'Fallon

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O'Fallon Flights as Low as $56

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

Frontier Airlines
Tue, Jun 9 - Tue, Jun 9
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$56 Roundtrip, found 1 day ago
$56
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Jun 9 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jun 9, priced at $56 found 1 day ago
Frontier Airlines
Wed, Jun 10 - Fri, Jun 12
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$58 Roundtrip, found 1 day ago
$58
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Jun 10 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Fri, Jun 12, priced at $58 found 1 day ago
Frontier Airlines
Mon, Jul 20 - Thu, Jul 23
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$66 Roundtrip, found 1 day ago
$66
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Jul 20 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Jul 23, priced at $66 found 1 day ago
Frontier Airlines
Wed, Jun 10 - Wed, Jun 10
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$68 Roundtrip, found 3 days ago
$68
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Jun 10 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jun 10, priced at $68 found 3 days ago
Delta
Tue, Jun 9 - Tue, Jun 9
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$112 Roundtrip, found 1 day ago
$112
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jun 9 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jun 9, priced at $112 found 1 day ago
Frontier Airlines
Tue, Jul 14 - Wed, Jul 15
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$138 Roundtrip, found 3 days ago
$138
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Jul 14 from Orlando Intl. to Lambert-St. Louis Intl., returning Wed, Jul 15, priced at $138 found 3 days ago
Frontier Airlines
Tue, Sep 1 - Tue, Sep 15
MIA
Miami Intl.
STL
Lambert-St. Louis Intl.
$190 Roundtrip, found 1 day ago
$190
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Sep 1 from Miami Intl. to Lambert-St. Louis Intl., returning Tue, Sep 15, priced at $190 found 1 day ago
Frontier Airlines
Wed, Jun 17 - Tue, Jun 23
PHL
Philadelphia Intl.
STL
Lambert-St. Louis Intl.
$195 Roundtrip, found 1 day ago
$195
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Jun 17 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Tue, Jun 23, priced at $195 found 1 day ago
Frontier Airlines
Sun, Jul 5 - Tue, Jul 7
TTN
Mercer
STL
Lambert-St. Louis Intl.
$215 Roundtrip, found 1 day ago
$215
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Jul 5 from Mercer to Lambert-St. Louis Intl., returning Tue, Jul 7, priced at $215 found 1 day ago
American Airlines
Tue, Jun 9 - Tue, Jun 9
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$217 Roundtrip, found 1 day ago
$217
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Jun 9 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jun 9, priced at $217 found 1 day ago
United
Thu, Sep 24 - Mon, Sep 28
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$219 Roundtrip, found 5 days ago
$219
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 24 from Orlando Intl. to Lambert-St. Louis Intl., returning Mon, Sep 28, priced at $219 found 5 days ago
Bargain Flight
Tue, Jun 23 - Tue, Jun 30
DCA
Ronald Reagan Washington National
STL
Lambert-St. Louis Intl.
$231 Roundtrip, found 1 day ago
$231
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Tue, Jun 23 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Tue, Jun 30, priced at $231 found 1 day ago
Frontier Airlines
Tue, Jun 16 - Thu, Jun 25
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$239 Roundtrip, found 2 days ago
$239
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Jun 16 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Thu, Jun 25, priced at $239 found 2 days ago
Bargain Flight
Wed, Jun 17 - Sat, Jul 4
BUF
Buffalo Niagara Intl.
STL
Lambert-St. Louis Intl.
$250 Roundtrip, found 1 day ago
$250
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Wed, Jun 17 from Buffalo Niagara Intl. to Lambert-St. Louis Intl., returning Sat, Jul 4, priced at $250 found 1 day ago
Bargain Flight
Wed, May 27 - Tue, Jun 9
LGA
LaGuardia
STL
Lambert-St. Louis Intl.
$254 Roundtrip, found 6 days ago
$254
Roundtrip
found 6 days ago
Select Bargain Flight flight, departing Wed, May 27 from LaGuardia to Lambert-St. Louis Intl., returning Tue, Jun 9, priced at $254 found 6 days ago
Delta
Fri, May 29 - Thu, Jun 11
IAD
Washington Dulles Intl.
STL
Lambert-St. Louis Intl.
$333 Roundtrip, found 6 hours ago
$333
Roundtrip
found 6 hours ago
Select Delta flight, departing Fri, May 29 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Thu, Jun 11, priced at $333 found 6 hours 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 June, 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 13 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 $56, 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 $56 right now, why wait?

O'Fallon Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$56

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! (1,007 reviews)
Walked off elevator to the smell of Marijuana all throughout the 2nd floor hallway. The smell remained the entire 2 day stay.

Reviewed on May 13, 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! (926 reviews)
The room was clean but shower head didn’t work the best. It was a quiet area! Breakfast was good and air conditioning kept the room cool

Reviewed on May 11, 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)
I accidentally booked incorrect hotel so cancelled on first day arrival. This review is for Expedia. They are awful to work with. Never book through 3rd party - always through hotel direct. I have confirmation email of cancellation fee according to their policy. However received email they are not ...

Reviewed on May 14, 2026

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Comfort Inn & Suites St. Louis - O'Fallon
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! (2,220 reviews)
Ehh better quality rooms and room amenities in a Holiday Inn Express and about 1/3 the price. Nothing too bad and was clean and convenient for the concert at hotel-casino-amphitheater venue.

Reviewed on May 16, 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! (1,278 reviews)
Breakfast was plentiful. The hot tub jets wrre amazing. Everything was great except out of pool towels in the pool area.

Reviewed on May 16, 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! (2,996 reviews)
Clean room. Friendly staff. Convenient

Reviewed on May 16, 2026

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Pear Tree Inn St. Louis Airport
Renaissance St. Louis Airport Hotel

Renaissance St. Louis Airport Hotel

4 out of 5
9801 Natural Bridge Road St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy an outdoor pool, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful ...
8.4/10 Very Good! (1,085 reviews)
It was entirely too loud. Parties taking place in our hallway. Nice room, but staff has no control over late night guests. We won’t stay here again.

Reviewed on May 13, 2026

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Renaissance St. Louis Airport Hotel
The Wildwood Hotel

The Wildwood Hotel

3.5 out of 5
2801 Fountain Pl Wildwood MO
Book a stay at this business-friendly hotel in Wildwood. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the convenient ...
9.2/10 Wonderful! (1,646 reviews)
STUNNING! This hotel exceeded my expectations. If you’ve ever stayed at the Waldorf Astoria in New York City then you’ll know it’s exceptionally comparable. This hotel made me feel like ROYALTY! The service, SPOTLESS room, staff, amenities, surrounding area were all first class! My sleep in that ...

Reviewed on May 16, 2026

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The Wildwood Hotel
See all 960 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.