Search Cheap Flights to
O'Fallon

Search 400 airlines and 321,000 hotels worldwide.

Stop Planning & Start Exploring

FREE 24 hour cancellation on most flights

O'Fallon Flights as Low as $68

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

Frontier Airlines
Tue, Jul 14 - Tue, Jul 14
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$68 Roundtrip, found 1 day ago
$68
Roundtrip
found 1 day ago
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 found 1 day ago
Frontier Airlines
Wed, Aug 12 - Tue, Aug 25
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$72 Roundtrip, found 21 hours ago
$72
Roundtrip
found 21 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 $72 found 21 hours ago
Frontier Airlines
Wed, Aug 12 - Sun, Aug 23
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$77 Roundtrip, found 1 day ago
$77
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Aug 12 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sun, Aug 23, priced at $77 found 1 day ago
Frontier Airlines
Tue, Jun 30 - Tue, Jun 30
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$78 Roundtrip, found 5 hours ago
$78
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, Jun 30 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jun 30, priced at $78 found 5 hours ago
Frontier Airlines
Thu, Aug 6 - Tue, Aug 18
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$101 Roundtrip, found 1 day ago
$101
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Aug 6 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Tue, Aug 18, priced at $101 found 1 day ago
Delta
Tue, Jun 30 - Tue, Jun 30
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$114 Roundtrip, found 5 hours ago
$114
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, Jun 30 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jun 30, priced at $114 found 5 hours ago
American Airlines
Wed, Aug 12 - Tue, Aug 25
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 21 hours ago
$159
Roundtrip
found 21 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 $159 found 21 hours ago
Delta
Sat, Oct 17 - Tue, Oct 20
DAL
Love Field
STL
Lambert-St. Louis Intl.
$209 Roundtrip, found 18 hours ago
$209
Roundtrip
found 18 hours ago
Select Delta flight, departing Sat, Oct 17 from Love Field to Lambert-St. Louis Intl., returning Tue, Oct 20, priced at $209 found 18 hours ago
Bargain Flight
Thu, Aug 20 - Sat, Aug 22
OMA
Eppley Field
STL
Lambert-St. Louis Intl.
$223 Roundtrip, found 1 day ago
$223
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Thu, Aug 20 from Eppley Field to Lambert-St. Louis Intl., returning Sat, Aug 22, priced at $223 found 1 day ago
American Airlines
Wed, Nov 11 - Sat, Nov 14
DCA
Ronald Reagan Washington National
STL
Lambert-St. Louis Intl.
$231 Roundtrip, found 11 hours ago
$231
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Wed, Nov 11 from Ronald Reagan Washington National to Lambert-St. Louis Intl., returning Sat, Nov 14, priced at $231 found 11 hours ago
Bargain Flight
Thu, Aug 27 - Mon, Sep 14
MSY
Louis Armstrong New Orleans Intl.
STL
Lambert-St. Louis Intl.
$242 Roundtrip, found 1 day ago
$242
Roundtrip
found 1 day ago
Select Bargain Flight flight, departing Thu, Aug 27 from Louis Armstrong New Orleans Intl. to Lambert-St. Louis Intl., returning Mon, Sep 14, priced at $242 found 1 day ago
Frontier Airlines
Tue, Aug 18 - Wed, Aug 26
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$256 Roundtrip, found 3 days ago
$256
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Aug 18 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Wed, Aug 26, priced at $256 found 3 days ago
Frontier Airlines
Tue, Jul 7 - Wed, Jul 29
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$258 Roundtrip, found 5 days ago
$258
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Jul 7 from San Francisco Intl. to Lambert-St. Louis Intl., returning Wed, Jul 29, priced at $258 found 5 days ago
Frontier Airlines
Tue, Jul 28 - Tue, Aug 4
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$263 Roundtrip, just found
$263
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Jul 28 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Tue, Aug 4, priced at $263 just found
Frontier Airlines
Tue, Jul 28 - Wed, Aug 5
ONT
Ontario Intl. Airport
STL
Lambert-St. Louis Intl.
$300 Roundtrip, found 3 days ago
$300
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Jul 28 from Ontario Intl. Airport to Lambert-St. Louis Intl., returning Wed, Aug 5, priced at $300 found 3 days ago
Alaska Airlines
Tue, Jul 28 - Tue, Aug 4
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$450 Roundtrip, just found
$450
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Jul 28 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Tue, Aug 4, priced at $450 just found

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 July, 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 14 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 $68, 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 $68 right now, why wait?

O'Fallon Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$67

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! (1,015 reviews)
"Rooms always very clean."

Reviewed on Jun 8, 2026

Get rates
Sleep Inn & Suites O'Fallon MO - Technology Drive
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

Get rates
Comfort Inn & Suites St. Louis - O'Fallon
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! (935 reviews)
"Hotel was in a good location. It was an average hotel. There was hair in the shower and the shower curtain was not long enough so water pooled in the floor during a shower. Bed was comfortable. Air conditioner worked well but was very loud. Fridge was also leaking water."

Reviewed on Jun 7, 2026

Get rates
Holiday Inn Express St. Louis West - O'Fallon by IHG
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! (1,350 reviews)
"The toilet was broken in 1st room. 2nd room had no towels. Went to the pool, no towels either. Cable TV guide didn't match the channel #s. The staff was very nice and helpful, but there seemed to be many things that could have been avoided with better leadership and intention on creating a great ..."

Reviewed on Jun 9, 2026

Get rates
Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham
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! (2,227 reviews)
"The staff was very kind, but we kept getting locked off our floor and they continued to do it. And we were supposed to get the rodeo room, which included a couch with hideabed a bathtub separate from ice shower, and we got none of the above the bathroom was still dirty.We paid a hundred and sixty ..."

Reviewed on Jun 8, 2026

Get rates
Hollywood Casino & Hotel St. Louis
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! (2,997 reviews)
"Excellent place to stay while waiting to travel from the St Louis airport."

Reviewed on Jun 9, 2026

Get rates
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! (1,103 reviews)
"Location was not good. Clean rooms, nice staff and good breakfast."

Reviewed on Jun 8, 2026

Get rates
Renaissance St. Louis Airport Hotel
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! (2,044 reviews)
"Trash ass hotel"

Reviewed on Jun 9, 2026

Get rates
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.