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£141 Cheap Flights to O'Fallon

View £141 flight on Fri, 19 Jun 2026Opens in a new window

Popular airlines to O'Fallon

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Cheap round-trip flights to O'Fallon

Prices were available within the past 7 days and start at £141 for one-way flights and £192 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 4 Aug - Tue, 18 Aug
BWI
Baltimore
STL
St. Louis
£192 Return, found 6 days ago
£192
Return
found 6 days ago
Select Delta flight, departing Tue, 4 Aug from Baltimore to St. Louis, returning Tue, 18 Aug, priced at £192 found 6 days ago
Alaska Airlines
Tue, 8 Sept - Fri, 11 Sept
DEN
Denver
STL
St. Louis
£500 Return, found 3 hours ago
£500
Return
found 3 hours ago
Select Alaska Airlines flight, departing Tue, 8 Sept from Denver to St. Louis, returning Fri, 11 Sept, priced at £500 found 3 hours ago
Swiss International Air Lines
Thu, 10 Sept - Sat, 10 Oct
LHR
London
STL
St. Louis
£553 Return, found 1 day ago
£553
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Thu, 10 Sept from London to St. Louis, returning Sat, 10 Oct, priced at £553 found 1 day ago
American Airlines
Tue, 10 Nov - Tue, 17 Nov
LGW
London
STL
St. Louis
£554 Return, found 1 day ago
£554
Return
found 1 day ago
Select American Airlines flight, departing Tue, 10 Nov from London to St. Louis, returning Tue, 17 Nov, priced at £554 found 1 day ago
Lufthansa
Fri, 18 Sept - Sun, 4 Oct
LCY
London
STL
St. Louis
£579 Return, found 4 days ago
£579
Return
found 4 days ago
Select Lufthansa flight, departing Fri, 18 Sept from London to St. Louis, returning Sun, 4 Oct, priced at £579 found 4 days ago

Frequently asked questions

What is the name of O'Fallon's airport?
Book a flight to O'Fallon with Expedia and you'll be stepping off the plane at Lambert-St. Louis Intl. Airport (STL).
How far is Lambert Field from central O'Fallon?
Long commutes don't have to be stressful if you plan ahead for them. Downtown O'Fallon is 31 kms (19 miles) from Lambert Field, so it's smart to know how you'll get into the city before you touchdown.
What airport is best to fly into O'Fallon?
Head through the exit of Lambert Field and your O'Fallon getaway will have begun! The city's main airport, it's located 31 kms (19 miles) from the downtown area.
How many airlines fly to O'Fallon?
O'Fallon is serviced by 12 air carriers from at least 61 airports around the world.
Which airlines fly to O'Fallon?
United Airlines and American Airlines are some of the leading airlines with flights to O'Fallon. Travellers often use Chicago as a departure point with United Airlines operating the most flights on this route.
How many nonstop flights are there to O'Fallon?
Flying to a new place is much more straightforward when there aren't any stopovers to worry about. If you're jetting off to O'Fallon, the great news is that there are 1,206 direct flights every week.
Where are the most popular flights to O'Fallon departing from?
The most popular flights to O'Fallon leave from Chicago, Dallas and New York airports.
How long is the flight to O'Fallon Airport?
If it's Chicago you're departing, you'll be in the sky for around 1 hour and 22 minutes before you touchdown in O'Fallon. Runway to runway from Dallas generally takes 1 hour and 43 minutes and from New York, the flight time is 3 hours and 1 minute.
How to book the cheapest flight to O'Fallon?
We all know those fortunate travellers who somehow grab extremely cheap airfares wherever they go. Want to know how to do it for your O'Fallon holiday? Don't leave it until the last minute to secure your flight. Don't stop there, however. Do some research and find out if there is more than one airport at your destination. Ticket prices often differ depending on the airport you pick. Be sure to compare prices across airlines as well. Lastly, another simple way to save a few dollars is be ready to book fast. If you find an irresistible deal, don't hold off — snap it up while you can.
Do you have any tips for my flight to O'Fallon?
Wherever you're jetting in from, flying can be a pleasurable experience if you're well prepared. We've compiled a list of handy hints that will help get your O'Fallon escape started on the right foot. What to pack in your hand luggage:

  • The trick to having a great flight experience is to be prepared. Start with the essentials: passport, travel documents, credit cards and any vital medications. Next, bring items that'll help keep you occupied, like some electronic devices or a magazine. You'll also want to bring your chargers, a neck pillow and a pair of earphones. Last but not least, don't forget to squeeze in toiletry items like a toothbrush, lip balm and a spare set of clothes.

Do not pack the following items in your hand luggage:

  • While the list of banned items can differ between airlines, the general rule of thumb is nothing flammable, sharp or explosive. This includes things like tools, metal cutlery, spray paint and fireworks. Sports equipment like ski poles, and items that could injure passengers, such as firearms and swords, won't be allowed on board either.

What to wear on a flight:

  • The aisles of an aircraft are no place for a fashion parade. Dress in comfortable layers and pick shoes that are flat, roomy and easy to pull on and off.
  • Caused by lengthy periods of inactivity, deep vein thrombosis (DVT) is a blood clot condition that can affect passengers on long-distance flights. Lower your risks by drinking water, keeping your legs and feet moving and wearing compression socks to help your circulation.

How to get through airport security fast when flying to O'Fallon?
It's simple — be prepared. We've pulled together some useful tips for a fuss-free trip through airport security. Look out O'Fallon, here you come:

  • First things first. Your boarding pass and passport will need to be presented to security personnel. Keep them within easy reach so you don't hold up the queue.
  • Time to strip down. Well kind of. Your coat, belt, keys and other contents of your pockets, like your headphones, will be required to go through the X-ray machine. Make your life easier by removing them before your turn arrives.
  • Your electronic gadgets like laptops and phones will also need to go on a tray for inspection. Don't worry though, you'll be back online in no time.
  • Any gels or liquids, such as shampoo or hand cream, that you want to take on board must be no greater than 3.4 ounces (100 millilitres). Also, everything must fit inside a quart-size (one litre), clear zip-lock bag.
  • Lightweight sneakers are a clever footwear choice as you're less likely to be asked to remove them when passing through security. Big boots and other heavy-style shoes are usually subjected to extra screening.
  • Pocket knives and other sharp items can't be taken on board. They'll be seized at security, so put them in your checked baggage.

Book with confidence

Expedia flights to O'Fallon

Searching for cheap flights to O'Fallon? No travel company presents more choices than Expedia if you're looking to compare flights to O'Fallon. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to St. Louis. Expedia provides the cheapest flights to many destinations in St. Louis and you may find even greater savings if you combine your flight with a hotel stay in O'Fallon.

Expedia is the largest online travel agency which means that Expedia have access to cheap flights. So make sure you check Expedia regularly for these bargain flights because the cheapest airline tickets sell out fast.

Expedia is not only free for everyone to use but it quick and easy to use. Find the lowest flight prices guaranteed and book directly through Expedia. Browse through hundreds of cheap flight offers to find the one that suits your budget by simply inputting your travel dates. Expedia will then find the cheapest flights to O'Fallon for that period and let you choose your preferred time and airline. If you need additional assistance, Expedia Customer Service representatives are available from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends. Our capable staff will be able to help you with any questions regarding your O'Fallon flight, or other booking questions that may arise. When you book flights with Expedia you can rest assured that you have booked the best flight at the lowest price.

Expedia flights to O'Fallon

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Return price
£191

Trending flights to O'Fallon

Prices were available within the past 7 days and start at £141 for one-way flights and £192 for round trip, for the period specified. Be sure to select the 'Direct flights only' box above if you are looking for a non stop route. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Thu, 10 Sept - Sat, 10 Oct
LHR
London
STL
St. Louis
£553 Return, found 1 day ago
£553
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Thu, 10 Sept from London to St. Louis, returning Sat, 10 Oct, priced at £553 found 1 day ago

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