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O'Fallon

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O'Fallon Flights as Low as $38

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

Frontier Airlines
Wed, Oct 28 - Wed, Nov 4
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$38 Roundtrip, found 1 day ago
$38
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Oct 28 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Nov 4, priced at $38 found 1 day ago
Frontier Airlines
Wed, Oct 28 - Wed, Nov 4
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$88 Roundtrip, found 3 hours ago
$88
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Wed, Oct 28 from Denver Intl. to Lambert-St. Louis Intl., returning Wed, Nov 4, priced at $88 found 3 hours ago
Frontier Airlines
Wed, Oct 21 - Wed, Oct 28
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$111 Roundtrip, found 5 hours ago
$111
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Wed, Oct 21 from Orlando Intl. to Lambert-St. Louis Intl., returning Wed, Oct 28, priced at $111 found 5 hours ago
Frontier Airlines
Wed, Nov 18 - Wed, Dec 2
PHL
Philadelphia Intl.
STL
Lambert-St. Louis Intl.
$111 Roundtrip, found 9 hours ago
$111
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Wed, Nov 18 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Wed, Dec 2, priced at $111 found 9 hours ago
Delta
Tue, Jan 5 - Tue, Jan 5
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$112 Roundtrip, found 21 hours ago
$112
Roundtrip
found 21 hours ago
Select Delta flight, departing Tue, Jan 5 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 5, priced at $112 found 21 hours ago
Southwest Airlines
Wed, Oct 14 - Wed, Oct 28
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$117 Roundtrip, found 1 day ago
$117
Roundtrip
found 1 day ago
Select Southwest Airlines flight, departing Wed, Oct 14 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Oct 28, priced at $117 found 1 day ago
American Airlines
Tue, Jan 5 - Tue, Jan 5
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, found 21 hours ago
$119
Roundtrip
found 21 hours ago
Select American Airlines flight, departing Tue, Jan 5 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Tue, Jan 5, priced at $119 found 21 hours ago
Frontier Airlines
Thu, Nov 19 - Mon, Dec 7
ORF
Norfolk Intl.
STL
Lambert-St. Louis Intl.
$166 Roundtrip, found 7 hours ago
$166
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Thu, Nov 19 from Norfolk Intl. to Lambert-St. Louis Intl., returning Mon, Dec 7, priced at $166 found 7 hours ago
Frontier Airlines
Wed, Nov 11 - Wed, Nov 25
FLL
Fort Lauderdale - Hollywood Intl.
STL
Lambert-St. Louis Intl.
$166 Roundtrip, found 14 hours ago
$166
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Nov 11 from Fort Lauderdale - Hollywood Intl. to Lambert-St. Louis Intl., returning Wed, Nov 25, priced at $166 found 14 hours ago
Frontier Airlines
Mon, Nov 16 - Wed, Nov 18
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$171 Roundtrip, found 3 hours ago
$171
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Mon, Nov 16 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Wed, Nov 18, priced at $171 found 3 hours ago
United
Wed, Oct 28 - Wed, Nov 4
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$177 Roundtrip, found 3 hours ago
$177
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Oct 28 from Denver Intl. to Lambert-St. Louis Intl., returning Wed, Nov 4, priced at $177 found 3 hours ago
Frontier Airlines
Sat, Nov 14 - Wed, Nov 18
ONT
Ontario Intl. Airport
STL
Lambert-St. Louis Intl.
$183 Roundtrip, found 4 hours ago
$183
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, Nov 14 from Ontario Intl. Airport to Lambert-St. Louis Intl., returning Wed, Nov 18, priced at $183 found 4 hours ago
Frontier Airlines
Sat, Oct 10 - Wed, Oct 14
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$241 Roundtrip, found 1 day ago
$241
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sat, Oct 10 from San Francisco Intl. to Lambert-St. Louis Intl., returning Wed, Oct 14, priced at $241 found 1 day ago
Southwest Airlines
Fri, Oct 16 - Fri, Nov 6
DAL
Love Field
STL
Lambert-St. Louis Intl.
$261 Roundtrip, found 6 days ago
$261
Roundtrip
found 6 days ago
Select Southwest Airlines flight, departing Fri, Oct 16 from Love Field to Lambert-St. Louis Intl., returning Fri, Nov 6, priced at $261 found 6 days ago
Alaska Airlines
Tue, Oct 13 - Sat, Oct 24
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$301 Roundtrip, found 22 hours ago
$301
Roundtrip
found 22 hours ago
Select Alaska Airlines flight, departing Tue, Oct 13 from San Francisco Intl. to Lambert-St. Louis Intl., returning Sat, Oct 24, priced at $301 found 22 hours ago
Frontier Airlines
Thu, Nov 19 - Sun, Nov 22
TTN
Mercer
STL
Lambert-St. Louis Intl.
$325 Roundtrip, found 1 day ago
$325
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Nov 19 from Mercer to Lambert-St. Louis Intl., returning Sun, Nov 22, priced at $325 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 October, 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 $38, 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 $38 right now, why wait?

O'Fallon Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$38

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 ...
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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! (997 reviews)
"Nice 👍👍👍👍 very nice"

Reviewed on Sep 19, 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 ...
7.4/10 Good! (1,000 reviews)
"Walked in the room and the smell was so strong that I did not stay. Walked right out and checked out - they still charged me for the entire trip including pet fee even though we were there less than 5 minutes. 0/10 recommend"

Reviewed on Sep 18, 2026

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Comfort Inn & Suites St. Louis - O'Fallon
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 ...
9.2/10 Wonderful! (3,249 reviews)
"Staff was exceptional! Our room was clean, the free breakfast was pretty hearty including scrambled eggs, waffles, bagels, fruit, juices, coffee and more. Also enjoyed free on site parking!"

Reviewed on Sep 23, 2026

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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! (1,184 reviews)
"This was a great place with a welcoming atmosphere. The staff were outstanding—friendly, attentive, and professional—making the experience even more enjoyable. The people there were remarkable, contributing to a lively and positive environment."

Reviewed on Sep 22, 2026

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Renaissance St. Louis Airport Hotel
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 ...
8.6/10 Excellent! (2,232 reviews)
"A very cozy stay!"

Reviewed on Sep 23, 2026

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Hollywood Casino & Hotel St. Louis
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! (1,572 reviews)
"We enjoyed our stay. Plenty of restaurants around the vicinity. The hotel was right off the highway and there was easy access to most of stl and the downtown area."

Reviewed on Sep 23, 2026

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Heritage Inn & Suites St. Louis/Fenton, Trademark by Wyndham
Sonesta ES Suites St. Louis - Chesterfield

Sonesta ES Suites St. Louis - Chesterfield

3 out of 5
15431 Conway Rd Chesterfield MO
Stay at this hotel in Chesterfield. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean rooms in our reviews. ...
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Sonesta ES Suites St. Louis - Chesterfield
See all 1,005 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.