Cheap Flights to O'Fallon

  • Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 35% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Tickets to O'Fallon

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon., 16 Dec. - Wed., 18 Dec.
ATL
Hartsfield-Jackson Atlanta Intl.
STL
Lambert-St. Louis Intl.
AU$400 Return, found 4 days ago
AU$400
Return
found 4 days ago
Select American Airlines flight, departing Mon., 16 Dec. from Hartsfield-Jackson Atlanta Intl. to Lambert-St. Louis Intl., returning Wed., 18 Dec., priced at AU$400 found 4 days ago
American Airlines
Mon., 3 Feb. - Fri., 14 Feb.
BNE
Brisbane
STL
Lambert-St. Louis Intl.
AU$1,327 Return, found 11 hours ago
AU$1,327
Return
found 11 hours ago
Select American Airlines flight, departing Mon., 3 Feb. from Brisbane to Lambert-St. Louis Intl., returning Fri., 14 Feb., priced at AU$1,327 found 11 hours ago
Delta
Fri., 7 Feb. - Fri., 21 Feb.
SYD
Kingsford Smith Intl.
STL
Lambert-St. Louis Intl.
AU$1,811 Return, found 6 days ago
AU$1,811
Return
found 6 days ago
Select Delta flight, departing Fri., 7 Feb. from Kingsford Smith Intl. to Lambert-St. Louis Intl., returning Fri., 21 Feb., priced at AU$1,811 found 6 days ago
United
Wed., 5 Mar. - Thu., 3 Apr.
ADL
Adelaide
STL
Lambert-St. Louis Intl.
AU$2,245 Return, found 6 days ago
AU$2,245
Return
found 6 days ago
Select United flight, departing Wed., 5 Mar. from Adelaide to Lambert-St. Louis Intl., returning Thu., 3 Apr., priced at AU$2,245 found 6 days ago
Singapore Airlines
Wed., 19 Feb. - Sun., 9 Mar.
PER
Perth
STL
Lambert-St. Louis Intl.
AU$2,472 Return, found 4 days ago
AU$2,472
Return
found 4 days ago
Select Singapore Airlines flight, departing Wed., 19 Feb. from Perth to Lambert-St. Louis Intl., returning Sun., 9 Mar., priced at AU$2,472 found 4 days ago
Beautiful view of the beach with palm trees

Black Friday: Members save 30%+

Members save 30%+ on selected hotels until 4 Dec (property time) with our Black Friday deals. Stay by 15 Dec 2025.
Unlock Black Friday deals

O'Fallon Flights

Have the time of your life in O'Fallon

Flying to O'Fallon is now easier than ever when you use Expedia to book your trip. We’ve got an extensive catalogue of O'Fallon flight deals, giving you the greatest number of options to choose from. Whether you prefer to fly on weekdays or weekends, in the morning or at night, a quick search on Expedia.com.au will help you find cheap tickets to O'Fallon in seconds. We even make it simple for you to stick with a certain airline if you’re trying to rack up frequent flyer points.

Tips for flying and packing light

If it’s been a while since you’ve travelled, you might be due for a refresher when it comes to flying. That’s where our helpful blog, Out There Starts Here, comes in. Wondering whether to pack for fine dining or more casual eats? Or whether you really need to bring a jacket? Written by seasoned travel experts, the articles on our blog provide you with the latest details about certain destinations, so you know just what to expect. Check out some of our recent articles for the smartest ways to see the sights.

Fly for less when you bundle airfare and accommodation

Our already low airfares are even more affordable when you bundle your flights with a stay at one of the hotels in O'Fallon. By booking all of your travel plans with us, you’ll save time and money, and enjoy the convenience of having all of your arrangements in one place.

Get the power of planning in the palm of your hand

Booking your trip to O'Fallon, Illinois has never been easier than when you use our mobile app to plan your dream getaway. The Expedia App is available on both Android and iOS, allowing you to reserve flights and hotels at any time of day, no matter what kind of phone you use. You’ll also get exclusive offers, receive flight updates, and can earn extra points. Wherever you are, the Expedia App helps you get where you want to be.

Join the Expedia Rewards Program

If you enjoy the finer things in life, sign up for our rewards program to receive exclusive benefits when you book with us. Expedia Rewards opens the door to member-only deals, +VIP Access hotel benefits, and earning Expedia Rewards points, that you can redeem your way. You’ll also get access to Unreal Deals that could save you the price of a plane ticket to O'Fallon when bundled with your accommodation.

What are you waiting for?

Expedia.com.au helps you find cheap flights to O'Fallon AU$400. So why wait another second to begin planning your trip? Start your search right now, and you could be boarding the next O'Fallon-bound flight. Bon voyage!

Frequently asked questions

What is the name of O'Fallon's airport?
O’Fallon has just one airport, Lambert-St. Louis Intl. Airport (STL).
How far is STL from central O'Fallon?
STL is 40 kilometres from downtown O’Fallon, so prepare yourself for a reasonable commute into the city centre.
What airport is best to fly into O'Fallon?
A flight to O’Fallon means coming in to land at St. Louis Lambert International Airport. Jump off the plane, collect your luggage and you’ll be 40 kilometres from downtown.
How many airlines fly to O'Fallon?
O’Fallon is serviced by 12 air carriers from at least 64 worldwide airports.
Which airlines fly to O'Fallon?
United Airlines and American Airlines are some of the most well-known airlines with flights to O’Fallon. Travellers often pick Chicago as a departure point with United Airlines operating the most flights on this route.
How many nonstop flights are there to O'Fallon?
Planning an unforgettable O’Fallon adventure is a cinch when there are 1 319 nonstop flights each week to choose from.
Where are the most popular flights to OFallon departing from?
A large number of flights to OFallon set off from Denver, Dallas and Chicago airports.
How long is the flight to O'Fallon Airport?
Which city you depart from determines how long you’ll be strapped into your seat. From Chicago to O’Fallon, the average flight time is 1 hour and 15 minutes. From Queens Village it’s typically 2 hours and 51 minutes, and from Denver it’s 1 hour and 59 minutes.
How to book the cheapest flight to O'Fallon?
We all know those lucky jet-setters who somehow manage to pick up super cheap fares whenever they fly. Would you like to know how to do it for your O’Fallon holiday? Don’t leave it until the last possible moment to secure your flight. Also, shop around and compare your options. If your destination has multiple airports, you may be able to pick up a fantastic deal by flying into one a little farther out. Last of all, another easy way to save some money is be ready to book at a moment’s notice. If you see an irresistible deal, don’t hesitate — snap it up while you can.
How to survive the flight to O'Fallon?
No matter where you’re coming from, flying can be an enjoyable experience if you’ve planned ahead. Check out these top travel tips that will help get your O’Fallon escape started on the right foot.What to pack in your hand luggage:

  • Travelling on a plane can be a cruisy experience if you pack the right things. First of all you’ll need toiletry items, such as a toothbrush and hairbrush, a spare change of clothes and a magazine or two. Secondly, leave space in your bag for your phone and charger, any vital medications and maybe a quality neck pillow too. Lastly, don’t forget to bring your passport, travel documents and some cash.

Do not pack the following items in your hand luggage:

  • While the list of restricted items can differ between air carriers, the general guide to follow is nothing flammable, sharp or explosive. This includes knives, scissors, fuels and bleaching agents. Sporting equipment like hockey sticks, and objects that could harm passengers, such as firearms and ammunition, aren’t allowed in the cabin either.

What to wear on a flight:

  • Comfort should be your number one priority when choosing what to wear on board. Consider your choice of footwear carefully too, as swollen ankles and feet are a common side effect of flying. Roomy, closed-toed shoes are your best bet.
  • Caused by sustained periods of inactivity, deep vein thrombosis (DVT) is a blood clot condition that can affect passengers on long-haul flights. The good news is there are proven ways to lower your risk of developing it. Drink plenty of water, get up and walk around the cabin as much as you can and wear compression socks to help improve your circulation.

How to get through airport security fast when flying to O'Fallon?
Being prepared before you get to the airport will make your getaway to O’Fallon a piece of cake. Check out our useful tips and tricks for a stress-free journey past security:

  • Airport security personnel first need to check that you have a valid ID and matching travel documents before you can proceed any further. Have them ready for inspection.
  • After that, both you and your carry-on luggage will be X-rayed. To speed things up, take off anything that might set the alarms off. Personal belongings such as your coat, belt and headphones need to go through the machine.
  • All your electronics, including your phone and laptop, will also need to be scanned separately.
  • Remove liquids and gels from your carry-on bag. They often need to be sent through the X-ray machine separately. Each product should be no larger than 3.4 ounces (100 milliliters) and everything must fit in a single quart-size (one litre), clear zip-lock bag.
  • Lightweight sneakers are a clever footwear choice as you’re less likely to have to remove them when going through security. Boots and heavier-style shoes are often subjected to extra screening.
  • Avoid taking prohibited items in your carry-on bag. If you have any sharp or pointed objects, put them in your checked baggage. They won’t be allowed on board and will be confiscated.

Flights to O'Fallon information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Return price
AU$400

Trending flights to O'Fallon

These prices were available within the past 7 days. Prices quoted are per person, return, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon., 3 Feb. - Fri., 14 Feb.
BNE
Brisbane
STL
Lambert-St. Louis Intl.
AU$1,327 Return, found 11 hours ago
AU$1,327
Return
found 11 hours ago
Select American Airlines flight, departing Mon., 3 Feb. from Brisbane to Lambert-St. Louis Intl., returning Fri., 14 Feb., priced at AU$1,327 found 11 hours ago
*Available to Expedia members.