Cheap Flights to O'Fallon from $20
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How Much Does it Cost To Fly To O'Fallon?
The cheapest prices found with in the last 7 days for return flights were $38 and $20 for one-way flights to O'Fallon for the period specified. Prices and availability are subject to change. Additional terms apply
| Origin | Destination | Travel Dates | Flights From* |
|---|---|---|---|
| DEN | St. Louis | November 4 to November 7 | $38 |
| ATL | St. Louis | November 13 to November 18 | $56 |
| LAX | St. Louis | November 7 to December 5 | $86 |
| DFW | St. Louis | November 7 to November 13 | $105 |
| TPA | St. Louis | November 2 to December 2 | $151 |
| PHL | St. Louis | November 4 to November 11 | $163 |
| EWR | St. Louis | November 11 to November 12 | $175 |
| LGA | St. Louis | November 11 to November 12 | $210 |
| SEA | St. Louis | December 2 to December 6 | $222 |
| FCO | St. Louis | November 22 to December 1 | $856 |
| Origin | Destination | Travel Dates | Flights From* |
|---|---|---|---|
| PHL | St. Louis | October 4 to October 19 | $302 |
| DFW | St. Louis | October 2 to October 3 | $386 |
| DEN | St. Louis | October 3 to October 7 | $415 |
| LAX | St. Louis | October 3 to October 7 | $436 |
| LGA | St. Louis | October 2 to October 5 | $436 |
| LGA | St. Louis | October 2 to October 5 | $436 |
| TPA | St. Louis | October 2 to October 4 | $446 |
| ATL | St. Louis | October 2 to October 5 | $538 |
| SEA | St. Louis | October 4 to October 10 | $555 |
O'Fallon Flight Information
Traveling to | O'Fallon |
|---|---|
Lowest Price | $38 |
Number of Airlines Serving | |
Airlines Serving | Frontier Airlines |
Number of Daily Flights | |
Airlines with Direct Flights |
Find The Perfect Hotel For After Your Flight
Amazing O'Fallon Accommodation Deals
Super 8 by Wyndham O'Fallon MO/St. Louis Area
"Decent rooms for a decent price. Friendly staff as well"
Reviewed on Sep 23, 2026
Comfort Inn & Suites St. Louis - O'Fallon
Hilton Garden Inn St. Louis/O'Fallon MO
Luxury Hotels in O'Fallon
Super 8 by Wyndham O'Fallon MO/St. Louis Area
"Decent rooms for a decent price. Friendly staff as well"
Reviewed on Sep 23, 2026
Family Friendly Hotels in O'Fallon
Sleep Inn & Suites O'Fallon MO - Technology Drive
Hilton Garden Inn St. Louis/O'Fallon MO
Residence Inn by Marriott O'Fallon
"Carpets need to be shampooed"
Reviewed on Sep 27, 2026
Holiday Inn Express St. Louis West - O'Fallon by IHG
"The bathroom floor was very dirty - and the last guest’s forgotten hair tie was still on floor. The bathroom was yet to be painted after drywall work and there was no cold water in the bathroom. And, the guy at the front desk couldn’t care less. When I book a Holiday Inn Express room I expect - and ..."
Reviewed on Sep 28, 2026
Best O'Fallon Flight and Hotel Packages
O'Fallon flight + hotel packages - economy flights
Need a Car For After Your Flight?
Economy
$27
Midsize
$27
Compact
$28
Special
$32
Frequently asked questions
Plane Tickets To O'Fallon
Although you may try and resist the urge, you know that when the travel bug comes, there is only one way to get rid of it. Thankfully, Travelocity is here to help nip that travel bug in the bud with great deals on flights to O'Fallon. Browse through our inventory to explore a wide range of cheap flights to O'Fallon to solidify your next big trip out of town. Whether you are heading out on a business trip, exploring a place you have never been for pleasure or are bringing the family on the annual vacation, we have the perfect getaway waiting for you. In no time, you will be day dreaming of your plane landing in O'Fallon as you anxiously await to exit the plane and explore what O'Fallon has to offer. Considering all the amazing local food and culture in O'Fallon, we won't hold this against you.
When you are ready to embark on your next big adventure, Travelocity will be right here waiting to open the doors to the garden so that you can go and smell the roses. When you decide to book and travel is entirely up to you, but don't wait too long because we have some of the best deals on the web and they won't last long. Take time to go through our huge selection of cheap flights to O'Fallon to find the best deals that fit into your budget. If browsing on your phone while your boss isn't looking is more your thing (we promise we won't tell), consider checking out Travelocity's mobile app which allows you to take advantage of all our flights to O'Fallon without having to compromise your work computer's search history. If you are looking to save even more, you can easily save up to $537 when you bundle one of our cheap flights to O'Fallon with one of our hotels. So why are you waiting around? There is no better time than now to start booking that next trip. Start your search now to book one of our flights to O'Fallon today!
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