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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
Mon, Jun 15 - Mon, Jun 15
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$56 Roundtrip, found 1 hour ago
$56
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Jun 15 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Jun 15, priced at $56 found 1 hour ago
Frontier Airlines
Thu, Jun 11 - Thu, Jun 11
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$58 Roundtrip, found 4 hours ago
$58
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Thu, Jun 11 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Jun 11, priced at $58 found 4 hours ago
Frontier Airlines
Thu, May 28 - Mon, Jun 8
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$64 Roundtrip, found 1 day ago
$64
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, May 28 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Jun 8, priced at $64 found 1 day ago
Delta
Tue, Jun 9 - Tue, Jun 9
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$112 Roundtrip, found 10 hours ago
$112
Roundtrip
found 10 hours 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 10 hours ago
Frontier Airlines
Tue, Jun 9 - Wed, Jun 10
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$140 Roundtrip, found 5 hours ago
$140
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, Jun 9 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Wed, Jun 10, priced at $140 found 5 hours ago
Delta
Wed, Jun 3 - Wed, Jun 3
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$160 Roundtrip, found 5 hours ago
$160
Roundtrip
found 5 hours ago
Select Delta flight, departing Wed, Jun 3 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, Jun 3, priced at $160 found 5 hours ago
United
Wed, Jun 3 - Wed, Jun 3
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$172 Roundtrip, found 5 hours ago
$172
Roundtrip
found 5 hours ago
Select United flight, departing Wed, Jun 3 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, Jun 3, priced at $172 found 5 hours ago
Frontier Airlines
Tue, Jul 7 - Wed, Jul 15
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$200 Roundtrip, found 2 days ago
$200
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Jul 7 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Wed, Jul 15, priced at $200 found 2 days ago
American Airlines
Tue, Jun 30 - Wed, Jul 15
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$207 Roundtrip, found 18 hours ago
$207
Roundtrip
found 18 hours ago
Select American Airlines flight, departing Tue, Jun 30 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, Jul 15, priced at $207 found 18 hours ago
Frontier Airlines
Tue, Jun 23 - Wed, Jul 1
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$209 Roundtrip, found 5 hours ago
$209
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, Jun 23 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Wed, Jul 1, priced at $209 found 5 hours ago
Frontier Airlines
Tue, Jul 28 - Tue, Aug 4
ONT
Ontario Intl. Airport
STL
Lambert-St. Louis Intl.
$210 Roundtrip, found 1 day ago
$210
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, Jul 28 from Ontario Intl. Airport to Lambert-St. Louis Intl., returning Tue, Aug 4, priced at $210 found 1 day ago
Frontier Airlines
Tue, May 12 - Sun, May 17
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$222 Roundtrip, found 5 days ago
$222
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, May 12 from Denver Intl. to Lambert-St. Louis Intl., returning Sun, May 17, priced at $222 found 5 days ago
Delta
Tue, Jun 2 - Tue, Jun 16
MKE
General Mitchell Intl.
STL
Lambert-St. Louis Intl.
$241 Roundtrip, found 18 hours ago
$241
Roundtrip
found 18 hours ago
Select Delta flight, departing Tue, Jun 2 from General Mitchell Intl. to Lambert-St. Louis Intl., returning Tue, Jun 16, priced at $241 found 18 hours ago
Frontier Airlines
Tue, Jun 16 - Tue, Jun 30
LGA
LaGuardia
STL
Lambert-St. Louis Intl.
$253 Roundtrip, found 15 hours ago
$253
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Tue, Jun 16 from LaGuardia to Lambert-St. Louis Intl., returning Tue, Jun 30, priced at $253 found 15 hours ago
Delta
Tue, Jun 9 - Wed, Jun 10
DAL
Love Field
STL
Lambert-St. Louis Intl.
$291 Roundtrip, found 3 hours ago
$291
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Jun 9 from Love Field to Lambert-St. Louis Intl., returning Wed, Jun 10, priced at $291 found 3 hours ago
Alaska Airlines
Tue, May 26 - Sat, May 30
ONT
Ontario Intl. Airport
STL
Lambert-St. Louis Intl.
$508 Roundtrip, found 1 day ago
$508
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Tue, May 26 from Ontario Intl. Airport to Lambert-St. Louis Intl., returning Sat, May 30, priced at $508 found 1 day 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 16 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 Lambert-St. Louis Intl. 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

Super 8 by Wyndham O'Fallon

Super 8 by Wyndham O'Fallon

2 out of 5
1100 Eastgate Dr O'Fallon IL
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 ...
6.8/10 (1,008 reviews)
The person at check in counter was on her cellphone the whole time of check in. Couldn't tell who she was talking to most of the time. She also charged for the room a second time even though it had already been paid for online. Not focused on her job too busy carrying on conversation on the ...

Reviewed on May 8, 2026

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Super 8 by Wyndham O'Fallon
Drury Inn & Suites St. Louis O'Fallon, IL

Drury Inn & Suites St. Louis O'Fallon, IL

3 out of 5
1118 Central Park Drive O'Fallon IL
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 ...
9.6/10 Exceptional! (1,003 reviews)
Clean rooms and friendly staff

Reviewed on May 2, 2026

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Drury Inn & Suites St. Louis O'Fallon, IL
Quality Inn O'Fallon IL - St. Louis

Quality Inn O'Fallon IL - St. Louis

3 out of 5
1409 W US 50 O'Fallon IL
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 ...
7.4/10 Good! (1,007 reviews)
The elevator was broken. My room was on 3rd floor. I had to wait upon checkin for my room to be ready. Options for breakfast was non-existent. The hallways smelled like marijuana. The experience was not good.

Reviewed on May 8, 2026

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Quality Inn O'Fallon IL - St. Louis
Welcome Suites

Welcome Suites

2 out of 5
148 Regency Park O'Fallon IL
Book a stay at this business-friendly hotel in O'Fallon. Enjoy free WiFi, free parking, and a fitness center. Popular attractions O'Fallon Family Sports Park ...
5.6/10 (247 reviews)
You get what you pay for. The staff was very kind and helpful and the sheets were clean, but the floor and walls in the room were damaged, and everything looked so run down and dingy I couldn't feel confident that things were actually clean. The mattress was also hard as a rock! Just drop a few more ...

Reviewed on May 8, 2026

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Welcome Suites
Sleep Inn O'Fallon near I-64

Sleep Inn O'Fallon near I-64

2.5 out of 5
140 Venita Dr O'Fallon IL
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 ...
7/10 Good! (950 reviews)
It is a clean, basic hotel. Could it use some updates, yes but for my purpose of a one night clean stay it worked fine.

Reviewed on May 8, 2026

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Sleep Inn O'Fallon near I-64
Comfort Inn & Suites O'Fallon - St. Louis Area

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

2 out of 5
116 Regency Park O'Fallon IL
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. ...
6.4/10 (145 reviews)
Clean room. Convenient location. Breakfast ends too early on weekends. Friendly staff

Reviewed on May 8, 2026

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Comfort Inn & Suites O'Fallon - St. Louis Area
Baymont by Wyndham O'Fallon St. Louis Area

Baymont by Wyndham O'Fallon St. Louis Area

2.5 out of 5
1320 Park Plaza Drive O'Fallon IL
Book a stay at this business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Popular attractions O'Fallon Family Sports Park and ...
5.6/10 (473 reviews)
Toilet in room 104 runs intermittently. I reported it when we checked in and nothing was done to fix it. I reported again when we checked out.

Reviewed on Apr 25, 2026

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Baymont by Wyndham O'Fallon St. Louis Area
Holiday Inn Express & Suites O'Fallon/Shiloh by IHG

Holiday Inn Express & Suites O'Fallon/Shiloh by IHG

2.5 out of 5
3396 Green Mount Crossing Drive Shiloh O'Fallon IL
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. ...
8.4/10 Very Good! (598 reviews)
The room was clean and the staff were very nice and helpful. Parking was very good. Breakfast was good but options were limited.

Reviewed on Apr 26, 2026

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Holiday Inn Express & Suites O'Fallon/Shiloh by IHG
See all 1,413 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.