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O'Fallon

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O'Fallon Flights as Low as $88

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

Frontier Airlines
Sat, Apr 18 - Sat, Apr 18
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$88 Roundtrip, just found
$88
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Apr 18 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Apr 18, priced at $88 just found
Frontier Airlines
Sat, Apr 4 - Sat, Apr 25
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$102 Roundtrip, just found
$102
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Apr 4 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Apr 25, priced at $102 just found
Delta
Wed, Apr 29 - Tue, May 5
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$117 Roundtrip, just found
$117
Roundtrip
just found
Select Delta flight, departing Wed, Apr 29 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Tue, May 5, priced at $117 just found
Frontier Airlines
Thu, Apr 2 - Fri, Apr 17
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$119 Roundtrip, found 6 days ago
$119
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Apr 2 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Fri, Apr 17, priced at $119 found 6 days ago
Frontier Airlines
Wed, Apr 1 - Sat, Apr 25
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$123 Roundtrip, found 4 days ago
$123
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Apr 1 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Apr 25, priced at $123 found 4 days ago
Frontier Airlines
Thu, Apr 16 - Mon, May 4
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$124 Roundtrip, found 2 days ago
$124
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Apr 16 from Denver Intl. to Lambert-St. Louis Intl., returning Mon, May 4, priced at $124 found 2 days ago
American Airlines
Wed, Apr 29 - Tue, May 5
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, just found
$159
Roundtrip
just found
Select American Airlines flight, departing Wed, Apr 29 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Tue, May 5, priced at $159 just found
Frontier Airlines
Fri, Apr 17 - Thu, Apr 23
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$184 Roundtrip, just found
$184
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Apr 17 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Thu, Apr 23, priced at $184 just found
Frontier Airlines
Thu, Apr 9 - Mon, Apr 13
PHL
Philadelphia Intl.
STL
Lambert-St. Louis Intl.
$184 Roundtrip, just found
$184
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Apr 9 from Philadelphia Intl. to Lambert-St. Louis Intl., returning Mon, Apr 13, priced at $184 just found
Frontier Airlines
Sun, Apr 12 - Mon, Apr 27
TTN
Mercer
STL
Lambert-St. Louis Intl.
$184 Roundtrip, just found
$184
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Apr 12 from Mercer to Lambert-St. Louis Intl., returning Mon, Apr 27, priced at $184 just found
Frontier Airlines
Thu, Apr 9 - Mon, Apr 27
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$210 Roundtrip, just found
$210
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Apr 9 from San Francisco Intl. to Lambert-St. Louis Intl., returning Mon, Apr 27, priced at $210 just found
United
Sat, Apr 18 - Sat, Apr 18
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$212 Roundtrip, just found
$212
Roundtrip
just found
Select United flight, departing Sat, Apr 18 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Apr 18, priced at $212 just found
Frontier Airlines
Tue, Mar 24 - Tue, Mar 31
ELP
El Paso Intl.
STL
Lambert-St. Louis Intl.
$227 Roundtrip, just found
$227
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Mar 24 from El Paso Intl. to Lambert-St. Louis Intl., returning Tue, Mar 31, priced at $227 just found
Delta
Tue, Apr 28 - Tue, May 12
DAL
Love Field
STL
Lambert-St. Louis Intl.
$281 Roundtrip, just found
$281
Roundtrip
just found
Select Delta flight, departing Tue, Apr 28 from Love Field to Lambert-St. Louis Intl., returning Tue, May 12, priced at $281 just found
Frontier Airlines
Tue, Mar 24 - Sun, Mar 29
ONT
Los Angeles - Ontario Intl.
STL
Lambert-St. Louis Intl.
$288 Roundtrip, found 22 hours ago
$288
Roundtrip
found 22 hours ago
Select Frontier Airlines flight, departing Tue, Mar 24 from Los Angeles - Ontario Intl. to Lambert-St. Louis Intl., returning Sun, Mar 29, priced at $288 found 22 hours ago
Alaska Airlines
Tue, Apr 7 - Tue, Apr 21
SFO
San Francisco Intl.
STL
Lambert-St. Louis Intl.
$343 Roundtrip, just found
$343
Roundtrip
just found
Select Alaska Airlines flight, departing Tue, Apr 7 from San Francisco Intl. to Lambert-St. Louis Intl., returning Tue, Apr 21, priced at $343 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 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 $88, 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 $88 right now, why wait?

O'Fallon Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$88

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)
My overnight stay was very nice at this Sleep Inn. I believe it's my 2nd time as I write this review. I was on a business trip in that area and chose it again from last experience. All good!! :-)

Reviewed on Mar 15, 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! (882 reviews)
!

Reviewed on Mar 11, 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)
Most everything has signs of significant wear: scratches on doors and walls, etc. breakfast was iffy as the sausage gravy was barely warm so with fears of bacteria I would not eat it after tasting it. Staff were fine but the facility is in serious need of an upgrade. We won’t be staying there ...

Reviewed on Mar 15, 2026

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Comfort Inn & Suites St. Louis - O'Fallon
Staybridge Suites O'Fallon Chesterfield by IHG

Staybridge Suites O'Fallon Chesterfield by IHG

3 out of 5
1155 Technology Drive O'Fallon MO
Stay at this hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff in our reviews. Popular attractions Weldon ...
8.6/10 Excellent! (425 reviews)
When this hotel was first built it was awesome. It's really noticeable how dated, dirty, various odors lurking throughout. Problem number 1, desk, nor the site mentioned anything about renovations. Not to mention giving us a room right next door? Seriously? After we moved a week's stay worth of luggage, ...

Reviewed on Mar 12, 2026

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Staybridge Suites O'Fallon Chesterfield by IHG
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! (2,210 reviews)
Hotel itself was fine. Floors in our room were a little gritty to the point where I noticed dirt accumulating in the corners and I needed to clean my feet off before putting my socks on. My biggest complaint was after paying $250 for one night, we were billed another $14 for “amenities” at check ...

Reviewed on Mar 12, 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 ...
8/10 Very Good! (1,138 reviews)
Rooms were filthy, trash behind headboards, dirty sheets on pull out sofa bed, shower was dirty, no toliet paper in bathroom, dirty diaper and popcorn spilled all in elevators. Room smelled terrible of Marijuana when we entered. When we arrived our door to our room was open and unlocked. The trash ...

Reviewed on Mar 17, 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! (2,870 reviews)
I only spent one night, but the hotel is clean, has a good breakfast, friendly staff, and a great airport shuttle. Good place to stay.

Reviewed on Mar 17, 2026

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Pear Tree Inn St. Louis Airport
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! (1,434 reviews)
Excellent place!

Reviewed on Mar 11, 2026

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Best Western St. Louis-Kirkwood Route 66
See all 962 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.