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 $95

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

Frontier Airlines
Thu, Jul 24 - Sat, Jul 26
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$95 Roundtrip, found 1 day ago
$95
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Jul 24 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Sat, Jul 26, priced at $95 found 1 day ago
Frontier Airlines
Sat, Oct 4 - Sat, Oct 11
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$108 Roundtrip, found 4 hours ago
$108
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, Oct 4 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Oct 11, priced at $108 found 4 hours ago
Delta
Thu, Nov 27 - Wed, Dec 3
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$137 Roundtrip, found 5 hours ago
$137
Roundtrip
found 5 hours ago
Select Delta flight, departing Thu, Nov 27 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Dec 3, priced at $137 found 5 hours ago
United
Sat, Oct 4 - Sat, Oct 11
DEN
Denver Intl.
STL
Lambert-St. Louis Intl.
$157 Roundtrip, found 4 hours ago
$157
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Oct 4 from Denver Intl. to Lambert-St. Louis Intl., returning Sat, Oct 11, priced at $157 found 4 hours ago
American Airlines
Thu, Nov 27 - Wed, Dec 3
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 5 hours ago
$159
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Thu, Nov 27 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed, Dec 3, priced at $159 found 5 hours ago
Spirit Airlines
Thu, Jul 24 - Thu, Jul 31
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
$159 Roundtrip, found 5 hours ago
$159
Roundtrip
found 5 hours ago
Select Spirit Airlines flight, departing Thu, Jul 24 from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Thu, Jul 31, priced at $159 found 5 hours ago
American Airlines
Thu, Aug 7 - Thu, Aug 14
PHX
Sky Harbor Intl.
STL
Lambert-St. Louis Intl.
$184 Roundtrip, found 3 days ago
$184
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug 7 from Sky Harbor Intl. to Lambert-St. Louis Intl., returning Thu, Aug 14, priced at $184 found 3 days ago
Delta
Tue, Aug 26 - Tue, Aug 26
DAL
Love Field
STL
Lambert-St. Louis Intl.
$194 Roundtrip, found 10 hours ago
$194
Roundtrip
found 10 hours ago
Select Delta flight, departing Tue, Aug 26 from Love Field to Lambert-St. Louis Intl., returning Tue, Aug 26, priced at $194 found 10 hours ago
United
Tue, Nov 18 - Wed, Nov 19
SAT
San Antonio Intl.
STL
Lambert-St. Louis Intl.
$202 Roundtrip, just found
$202
Roundtrip
just found
Select United flight, departing Tue, Nov 18 from San Antonio Intl. to Lambert-St. Louis Intl., returning Wed, Nov 19, priced at $202 just found
Bargain Flight
Wed, Jul 2 - Sat, Jul 12
CLE
Hopkins Intl.
STL
Lambert-St. Louis Intl.
$218 Roundtrip, found 12 hours ago
$218
Roundtrip
found 12 hours ago
Select Bargain Flight flight, departing Wed, Jul 2 from Hopkins Intl. to Lambert-St. Louis Intl., returning Sat, Jul 12, priced at $218 found 12 hours ago
Frontier Airlines
Fri, Jul 4 - Sat, Jul 12
IAH
George Bush Intercontinental
STL
Lambert-St. Louis Intl.
$242 Roundtrip, found 5 days ago
$242
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Jul 4 from George Bush Intercontinental to Lambert-St. Louis Intl., returning Sat, Jul 12, priced at $242 found 5 days ago
American Airlines
Sat, Oct 25 - Mon, Oct 27
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$242 Roundtrip, found 4 days ago
$242
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Oct 25 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Mon, Oct 27, priced at $242 found 4 days ago
Delta
Fri, Jul 4 - Fri, Jul 4
SYR
Hancock Intl.
STL
Lambert-St. Louis Intl.
$255 Roundtrip, found 11 hours ago
$255
Roundtrip
found 11 hours ago
Select Delta flight, departing Fri, Jul 4 from Hancock Intl. to Lambert-St. Louis Intl., returning Fri, Jul 4, priced at $255 found 11 hours ago
Alaska Airlines
Mon, Oct 20 - Sat, Oct 25
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$315 Roundtrip, found 5 hours ago
$315
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Mon, Oct 20 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Sat, Oct 25, priced at $315 found 5 hours ago
American Airlines
Thu, Jul 3 - Mon, Jul 7
PNS
Pensacola Intl.
STL
Lambert-St. Louis Intl.
$460 Roundtrip, found 5 hours ago
$460
Roundtrip
found 5 hours ago
Select American Airlines flight, departing Thu, Jul 3 from Pensacola Intl. to Lambert-St. Louis Intl., returning Mon, Jul 7, priced at $460 found 5 hours ago
Hawaiian Airlines
Tue, Jul 1 - Wed, Jul 2
LAX
Los Angeles Intl.
STL
Lambert-St. Louis Intl.
$526 Roundtrip, found 2 hours ago
$526
Roundtrip
found 2 hours ago
Select Hawaiian Airlines flight, departing Tue, Jul 1 from Los Angeles Intl. to Lambert-St. Louis Intl., returning Wed, Jul 2, priced at $526 found 2 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 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 15 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 $95, 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 $95 right now, why wait?

O'Fallon Flight Information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Roundtrip price
$94

Last Minute Hotel Deals in O'Fallon

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! (1,014 reviews)
"The hotel was clean and our room was spacious. There aren't many food options real close."

Reviewed on Jun 25, 2025

Get rates
Comfort Inn & Suites St. Louis - 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 ...
8.8/10 Excellent! (1,002 reviews)
"Everything was great"

Reviewed on Jun 15, 2025

Get rates
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. ...
8.4/10 Very Good! (719 reviews)
Great Stay!
"Great help with checking in, room, was great! Breakfast was just what we needed!"

Reviewed on Jun 27, 2025

Get rates
Holiday Inn Express St. Louis West - O'Fallon by IHG
Residence Inn by Marriott O'Fallon
Residence Inn by Marriott O'Fallon
3 out of 5
101 Progress Point Ct., O'Fallon, MO
Stay at this 3-star business-friendly hotel in O'Fallon. Enjoy free breakfast, free WiFi, and free parking. Popular attractions Golf Headquarters and Missouri ...
8.4/10 Very Good! (430 reviews)
"Love the stay great for families!"

Reviewed on Jun 22, 2025

Get rates
Residence Inn by Marriott 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! (2,607 reviews)
Stellar marks, I completely awesome stay.
"Super easy check in; Landon was awesome and did a quick check in to we could take part in the happy hour. Really great special touch. He also recommended the Bandanna’s BBQ restaurant right next door and it was a great meal. The room was really nice, comfy bed and good shower. I liked the divide ..."

Reviewed on Jun 28, 2025

Get rates
Pear Tree Inn St. Louis Airport
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 ...
8.2/10 Very Good! (1,945 reviews)
"Visited from Washington state, our stay was terrific and the staff were polite & helpful. Our only negative takeaway, the bathroom door is barn style and just would not stay closed. This left a crack in the door way which was closest to the main door. This door provided absolutely no privacy. ..."

Reviewed on Jun 27, 2025

Get rates
Hollywood Casino & Hotel St. Louis
La Quinta Inn & Suites by Wyndham St. Louis Westport
La Quinta Inn & Suites by Wyndham St. Louis Westport
3 out of 5
11805 Lackland Rd, Maryland Heights, MO
Stay at this 3-star business-friendly hotel in Maryland Heights. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the breakfast and the helpful ...
7.2/10 Good! (1,001 reviews)
"I stayed there for 3 nights. Was nice stay. Rooms are very inviting & spacious."

Reviewed on Jun 23, 2025

Get rates
La Quinta Inn & Suites by Wyndham St. Louis Westport
Wingate by Wyndham St. Louis/Fenton Route 66
Wingate by Wyndham St. Louis/Fenton Route 66
3 out of 5
1100 S Highway Dr, Fenton, MO
Stay at this 3-star business-friendly hotel in Fenton. Enjoy free breakfast, free WiFi, and free parking. Our guests praise the helpful staff and the clean rooms ...
8.4/10 Very Good! (1,007 reviews)
"I loved the speedy response from Maintenance to replace our tv in our room. I also loved the complimentary breakfast. The beds were very comfortable."

Reviewed on Jun 27, 2025

Get rates
Wingate by Wyndham St. Louis/Fenton Route 66
See all 910 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.