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O'Fallon

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O'Fallon Flights as Low as $66

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

Frontier Airlines
Wed, Aug 12 - Tue, Aug 25
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$66 Roundtrip, found 8 hours ago
$66
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Wed, Aug 12 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Aug 25, priced at $66 found 8 hours ago
Frontier Airlines
Tue, Jul 14 - Tue, Jul 14
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$68 Roundtrip, just found
$68
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jul 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jul 14, priced at $68 just found
Frontier Airlines
Mon, Jul 6 - Wed, Jul 22
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$77 Roundtrip, found 3 hours ago
$77
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Mon, Jul 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jul 22, priced at $77 found 3 hours ago
Frontier Airlines
Wed, Jul 8 - Sun, Jul 26
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$79 Roundtrip, found 12 hours ago
$79
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Wed, Jul 8 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Jul 26, priced at $79 found 12 hours ago
Frontier Airlines
Wed, Jun 24 - Wed, Jul 1
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$84 Roundtrip, just found
$84
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jun 24 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jul 1, priced at $84 just found
Delta
Tue, Jul 14 - Tue, Jul 14
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$124 Roundtrip, just found
$124
Roundtrip
just found
Select Delta flight, departing Tue, Jul 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jul 14, priced at $124 just found
American Airlines
Wed, Aug 12 - Tue, Aug 25
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$217 Roundtrip, found 8 hours ago
$217
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Wed, Aug 12 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Aug 25, priced at $217 found 8 hours ago
Bargain Flight
Tue, Jul 7 - Wed, Jul 15
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$238 Roundtrip, just found
$238
Roundtrip
just found
Select Bargain Flight flight, departing Tue, Jul 7 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Wed, Jul 15, priced at $238 just found
Bargain Flight
Sat, Jun 20 - Sat, Jun 27
OMA
Eppley Field
STL
Lambert-St. Louis Intl.
$251 Roundtrip, just found
$251
Roundtrip
just found
Select Bargain Flight flight, departing Sat, Jun 20 from Eppley Field to Lambert-St. Louis Intl., returning Sat, Jun 27, priced at $251 just found
Frontier Airlines
Tue, Jul 7 - Wed, Jul 8
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$252 Roundtrip, found 13 hours ago
$252
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Tue, Jul 7 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Wed, Jul 8, priced at $252 found 13 hours ago
Frontier Airlines
Fri, Jul 3 - Wed, Jul 15
EWR
Newark Liberty Intl. Airport
STL
Lambert-St. Louis Intl.
$256 Roundtrip, found 2 days ago
$256
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Jul 3 from Newark Liberty Intl. Airport to Lambert-St. Louis Intl., returning Wed, Jul 15, priced at $256 found 2 days ago
Delta
Sat, Oct 17 - Tue, Oct 20
DAL
Love Field
STL
Lambert-St. Louis Intl.
$263 Roundtrip, just found
$263
Roundtrip
just found
Select Delta flight, departing Sat, Oct 17 from Love Field to Lambert-St. Louis Intl., returning Tue, Oct 20, priced at $263 just found
Bargain Flight
Tue, Jun 9 - Fri, Jun 19
DCA
Ronald Reagan Washington National
STL
Lambert-St. Louis Intl.
$272 Roundtrip, found 2 days ago
$272
Roundtrip
found 2 days ago
Select Bargain Flight flight, departing Tue, Jun 9 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Fri, Jun 19, priced at $272 found 2 days ago
American Airlines
Tue, Jun 23 - Thu, Jul 2
BRO
Brownsville-South Padre Island Intl.
STL
Lambert-St. Louis Intl.
$362 Roundtrip, just found
$362
Roundtrip
just found
Select American Airlines flight, departing Tue, Jun 23 from Brownsville-South Padre Island Intl. to Lambert-St. Louis Intl., returning Thu, Jul 2, priced at $362 just found
American Airlines
Tue, Sep 1 - Tue, Sep 15
AMA
Rick Husband Amarillo Intl.
STL
Lambert-St. Louis Intl.
$387 Roundtrip, just found
$387
Roundtrip
just found
Select American Airlines flight, departing Tue, Sep 1 from Rick Husband Amarillo Intl. to Lambert-St. Louis Intl., returning Tue, Sep 15, priced at $387 just found
Frontier Airlines
Sun, Jun 14 - Sat, Jun 20
IAD
Washington Dulles Intl.
STL
Lambert-St. Louis Intl.
$408 Roundtrip, found 13 hours ago
$408
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Sun, Jun 14 from Washington Dulles Intl. to Lambert-St. Louis Intl., returning Sat, Jun 20, priced at $408 found 13 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 August, 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 $66, 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 $66 right now, why wait?

O'Fallon Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$66

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)
"Clean room and decent breakfast"

Reviewed on Jun 5, 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! (933 reviews)
"This is an older property but it’s well-maintained. The blackout curtains were a good upgrade. Nothing fancy, but it’s a clean, quiet place to stay."

Reviewed on Jun 4, 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! (1,003 reviews)
"tired hotel needing repairs and updating, breakfast was standard fare, coffee weak"

Reviewed on Jun 5, 2026

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Comfort Inn & Suites St. Louis - O'Fallon
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 ...
7.8/10 Good! (1,339 reviews)
"It took 25 minutes to check in because only 1 person at desk at 3pm. We stayed in room 137. There was a strange loud thumping sound in pipes. I told front desk, she said no maintenance until Monday. It kept me up for long time. Next morning at check out the clerk said they KNEW there is an issue, ..."

Reviewed on Jun 6, 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! (2,999 reviews)
"Nice clean hotel, with friendly helpful staff."

Reviewed on Jun 6, 2026

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Pear Tree Inn St. Louis Airport
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! (2,221 reviews)
"The shuttles cost an extra fee. No free breakfast. Rude staff. Dirty rooms."

Reviewed on Jun 5, 2026

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Hollywood Casino & Hotel St. Louis
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! (1,470 reviews)
"Clean room and comfortable bed. Television didn’t work ,but we’re usually on our phones so no big deal to us. The blow dryer also didn’t work."

Reviewed on Jun 4, 2026

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Best Western St. Louis-Kirkwood Route 66
Motel 6 Hazelwood, MO

Motel 6 Hazelwood, MO

2 out of 5
5781 Campus Ct Hazelwood MO
Stay at this motel in Hazelwood. Enjoy free WiFi, free parking, and a 24-hour front desk. Our guests praise the clean rooms in our reviews. Popular attractions ...
8.4/10 Very Good! (2,031 reviews)
"The place was absolutely disgusting and smelled terrible as well."

Reviewed on Jun 5, 2026

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Motel 6 Hazelwood, MO
See all 964 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.