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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
Wed, Apr 29 - Wed, May 13
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$56 Roundtrip, found 5 hours ago
$56
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Wed, Apr 29 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $56 found 5 hours ago
Frontier Airlines
Sat, May 16 - Wed, Jun 3
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$62 Roundtrip, found 5 hours ago
$62
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, May 16 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Jun 3, priced at $62 found 5 hours ago
Frontier Airlines
Wed, Apr 29 - Wed, May 13
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$67 Roundtrip, found 5 hours ago
$67
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Wed, Apr 29 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $67 found 5 hours ago
Frontier Airlines
Sat, May 2 - Mon, May 11
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$68 Roundtrip, found 5 hours ago
$68
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, May 2 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Mon, May 11, priced at $68 found 5 hours ago
Frontier Airlines
Sat, May 30 - Wed, Jun 10
DFW
Dallas-Fort Worth Intl.
STL
Lambert-St. Louis Intl.
$84 Roundtrip, found 5 hours ago
$84
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, May 30 from Dallas-Fort Worth Intl. to Lambert-St. Louis Intl., returning Wed, Jun 10, priced at $84 found 5 hours ago
Frontier Airlines
Sat, May 9 - Fri, May 15
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$105 Roundtrip, found 5 hours ago
$105
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Sat, May 9 from Denver Intl. to Lambert-St. Louis Intl., returning Fri, May 15, priced at $105 found 5 hours ago
American Airlines
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, found 5 hours ago
$119
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $119 found 5 hours ago
Frontier Airlines
Thu, Apr 30 - Mon, May 11
RDU
Raleigh - Durham Intl.
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 5 hours ago
$142
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Thu, Apr 30 from Raleigh - Durham Intl. to Lambert-St. Louis Intl., returning Mon, May 11, priced at $142 found 5 hours ago
Frontier Airlines
Tue, Apr 28 - Thu, May 14
PHL
Philadelphia Intl.
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 5 hours ago
$142
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, Apr 28 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Thu, May 14, priced at $142 found 5 hours ago
Frontier Airlines
Tue, Apr 28 - Thu, May 14
TTN
Mercer
STL
Lambert-St. Louis Intl.
$142 Roundtrip, found 5 hours ago
$142
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, Apr 28 from Mercer to Lambert-St. Louis Intl., returning Thu, May 14, priced at $142 found 5 hours ago
United
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$152 Roundtrip, found 5 hours ago
$152
Roundtrip
found 5 hours ago
Select United flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $152 found 5 hours ago
Frontier Airlines
Mon, Apr 27 - Wed, May 13
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$153 Roundtrip, found 5 hours ago
$153
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Mon, Apr 27 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Wed, May 13, priced at $153 found 5 hours ago
Delta
Tue, May 12 - Wed, May 13
ORD
O'Hare Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 5 hours ago
$159
Roundtrip
found 5 hours ago
Select Delta flight, departing Tue, May 12 from O'Hare Intl. to Lambert-St. Louis Intl., returning Wed, May 13, priced at $159 found 5 hours ago
Frontier Airlines
Sun, Apr 19 - Thu, Apr 23
LGA
LaGuardia
STL
Lambert-St. Louis Intl.
$237 Roundtrip, found 10 hours ago
$237
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Sun, Apr 19 from LaGuardia to Lambert-St. Louis Intl., returning Thu, Apr 23, priced at $237 found 10 hours ago
Delta
Sat, May 30 - Wed, Jun 10
DAL
Love Field
STL
Lambert-St. Louis Intl.
$241 Roundtrip, found 5 hours ago
$241
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, May 30 from Love Field to Lambert-St. Louis Intl., returning Wed, Jun 10, priced at $241 found 5 hours ago
Alaska Airlines
Sat, May 9 - Fri, May 15
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$551 Roundtrip, found 5 hours ago
$551
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Sat, May 9 from Denver Intl. to Lambert-St. Louis Intl., returning Fri, May 15, priced at $551 found 5 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 April, 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 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! (1,004 reviews)
Excellent all the way around

Reviewed on Apr 2, 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! (901 reviews)
The Beds were very comfortable. The hotel is under construction and our room had not been cleaned well since they did work in it. The floors were dirty. The bathroom had drywall powder all over the floor and door handled The shower had dirty workman prints all over them The breakfast was subpar The ...

Reviewed on Apr 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! (1,002 reviews)
Room was clean, but in pretty poor repair. May just have been this room, but we were a little disappointed. Staff was great, though.

Reviewed on Mar 31, 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! (2,192 reviews)
Clean room and friendly staff

Reviewed on Apr 6, 2026

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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! (2,898 reviews)
Friendly staff and clean room. Enjoyed a quick breakfast before catching the airport shuttle.

Reviewed on Apr 6, 2026

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Pear Tree Inn St. Louis Airport
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 ...
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Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham
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! (1,440 reviews)
If I could give this place zero stars I would. They sold us a room with no working A/C, knowing it doesn’t work. Said they were sold out of other rooms and we couldn’t change when we realized. Didn’t give us any compensation to make up for it except a box fan. Will never stay here or any Best Western ...

Reviewed on Apr 2, 2026

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Best Western St. Louis-Kirkwood Route 66
Hilton St. Louis Airport

Hilton St. Louis Airport

3.5 out of 5
10330 Natural Bridge Rd St. Louis MO
Book a stay at this business-friendly hotel in St. Louis. Enjoy 2 restaurants, breakfast (surcharge), and a free airport shuttle. Our guests praise the helpful ...
7.6/10 Good! (1,004 reviews)
Clean room

Reviewed on Apr 5, 2026

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Hilton St. Louis Airport
See all 971 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.