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O'Fallon

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O'Fallon Flights as Low as $46

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

Frontier Airlines
Mon, Sep 28 - Mon, Oct 12
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$46 Roundtrip, found 2 days ago
$46
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Mon, Sep 28 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Oct 12, priced at $46 found 2 days ago
Frontier Airlines
Sun, Sep 6 - Mon, Sep 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$51 Roundtrip, found 3 days ago
$51
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sun, Sep 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Sep 21, priced at $51 found 3 days ago
Frontier Airlines
Fri, Sep 18 - Fri, Oct 2
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$56 Roundtrip, found 5 days ago
$56
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Sep 18 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Fri, Oct 2, priced at $56 found 5 days ago
Frontier Airlines
Mon, Sep 7 - Mon, Sep 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$57 Roundtrip, found 5 hours ago
$57
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Mon, Sep 7 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Sep 21, priced at $57 found 5 hours ago
Frontier Airlines
Mon, Sep 14 - Wed, Sep 30
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$61 Roundtrip, found 3 days ago
$61
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Mon, Sep 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Sep 30, priced at $61 found 3 days ago
Frontier Airlines
Wed, Oct 14 - Tue, Oct 20
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$98 Roundtrip, found 5 days ago
$98
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Oct 14 from Denver Intl. to Lambert-St. Louis Intl., returning Tue, Oct 20, priced at $98 found 5 days ago
Delta
Sat, Aug 29 - Sat, Aug 29
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$113 Roundtrip, found 5 hours ago
$113
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, Aug 29 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Aug 29, priced at $113 found 5 hours ago
Southwest Airlines
Tue, Sep 15 - Tue, Sep 15
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, found 2 days ago
$119
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Tue, Sep 15 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Sep 15, priced at $119 found 2 days ago
American Airlines
Sun, Sep 6 - Mon, Sep 21
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$178 Roundtrip, found 3 days ago
$178
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Sep 6 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, Sep 21, priced at $178 found 3 days ago
Frontier Airlines
Fri, Oct 23 - Fri, Nov 6
LAS
Harry Reid Intl.
STL
Lambert-St. Louis Intl.
$208 Roundtrip, found 1 day ago
$208
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Oct 23 from Harry Reid Intl. to Lambert-St. Louis Intl., returning Fri, Nov 6, priced at $208 found 1 day ago
United
Thu, Oct 1 - Mon, Oct 5
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$216 Roundtrip, found 1 day ago
$216
Roundtrip
found 1 day ago
Select United flight, departing Thu, Oct 1 from Denver Intl. to Lambert-St. Louis Intl., returning Mon, Oct 5, priced at $216 found 1 day ago
Bargain Flight
Wed, Nov 11 - Mon, Nov 16
BOS
Logan Intl.
STL
Lambert-St. Louis Intl.
$271 Roundtrip, found 2 days ago
$271
Roundtrip
found 2 days ago
Select Bargain Flight flight, departing Wed, Nov 11 from Logan Intl. to Lambert-St. Louis Intl., returning Mon, Nov 16, priced at $271 found 2 days ago
Bargain Flight
Fri, Aug 28 - Sun, Aug 30
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$312 Roundtrip, found 1 day ago
$312
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Fri, Aug 28 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Sun, Aug 30, priced at $312 found 1 day ago
Delta
Mon, Sep 14 - Thu, Sep 17
RSW
Southwest Florida Intl.
STL
Lambert-St. Louis Intl.
$333 Roundtrip, found 1 day ago
$333
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Sep 14 from Southwest Florida Intl. to Lambert-St. Louis Intl., returning Thu, Sep 17, priced at $333 found 1 day ago
Bargain Flight
Sat, Sep 5 - Sat, Sep 5
SEA
Seattle - Tacoma Intl.
STL
Lambert-St. Louis Intl.
$357 Roundtrip, just found
$357
Roundtrip
just found
Select Bargain Flight flight, departing Sat, Sep 5 from Seattle - Tacoma Intl. to Lambert-St. Louis Intl., returning Sat, Sep 5, priced at $357 just found
Alaska Airlines
Fri, Aug 28 - Sun, Aug 30
PAE
Seattle Paine Field Intl. Airport
STL
Lambert-St. Louis Intl.
$453 Roundtrip, found 1 day ago
$453
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Fri, Aug 28 from Seattle Paine Field Intl. Airport to Lambert-St. Louis Intl., returning Sun, Aug 30, priced at $453 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 September, 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 MidAmerica-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 $46, 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 $46 right now, why wait?

O'Fallon Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$46

Last Minute Hotel Deals in 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 ...
Get rates
Drury Inn & Suites St. Louis O'Fallon, IL
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 ...
6.6/10 (1,064 reviews)
"Great place to stay. Mostly quiet and everything as described."

Reviewed on Aug 9, 2026

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Super 8 by Wyndham O'Fallon
Quality Inn O'Fallon - St. Louis - Shiloh

Quality Inn O'Fallon - St. Louis - Shiloh

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 ...
Get rates
Quality Inn O'Fallon - St. Louis - Shiloh
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. ...
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Comfort Inn & Suites O'Fallon - St. Louis Area
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 ...
6.8/10 (994 reviews)
"This very old hotel was an absolute dump. They didn't have an ice bucket in our room and when I asked about it, they said they didn't have any. As a matter of fact, the ice machine wasn't working on our floor anyway, we had to go downstairs if we wanted ice. The front desk gave us small "ice bags" ..."

Reviewed on Aug 7, 2026

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Sleep Inn O'Fallon near I-64
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 ...
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Welcome Suites
Extended Stay America Select Suites - St. Louis - O' Fallon, IL

Extended Stay America Select Suites - St. Louis - O' Fallon, IL

2.5 out of 5
154 Regency Park O'Fallon IL
Stay at this hotel in O'Fallon. Enjoy free WiFi, free parking, and laundry facilities. Our guests praise the helpful staff and the clean rooms in our reviews. ...
7.6/10 Good! (908 reviews)
"The place needed a good scrubbing and maybe security to deal with some of the long time residents"

Reviewed on Aug 3, 2026

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Extended Stay America Select Suites - St. Louis - O' Fallon, IL
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 (507 reviews)
"The bed had a huge dent in the middle and I couldn’t get comfortable enough so I checked out 2 hours after checking in"

Reviewed on Aug 3, 2026

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Baymont by Wyndham O'Fallon St. Louis Area
See all 1,489 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.