Cheap Flights to St. Charles , MO from CA $42

View CA $42 flight on Sun, Aug. 24, 2025Opens in a new window

Popular airlines to St. Charles

  • 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 30% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to St. Charles?

Prices were available within the past 7 days and start at CA $42 for one-way flights and CA $83 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Aug. 21 - Mon, Aug. 25
DTW
Detroit
STL
St. Louis
CA $83 Roundtrip, found 11 hours ago
CA $83
Roundtrip
found 11 hours ago
Select Spirit Airlines flight, departing Thu, Aug. 21 from Detroit to St. Louis, returning Mon, Aug. 25, priced at CA $83 found 11 hours ago
Delta
Mon, Aug. 18 - Fri, Aug. 22
DTW
Detroit
STL
St. Louis
CA $123 Roundtrip, found 6 days ago
CA $123
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Aug. 18 from Detroit to St. Louis, returning Fri, Aug. 22, priced at CA $123 found 6 days ago
American Airlines
Wed, Sep. 10 - Tue, Sep. 16
DTW
Detroit
STL
St. Louis
CA $232 Roundtrip, found 4 days ago
CA $232
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Sep. 10 from Detroit to St. Louis, returning Tue, Sep. 16, priced at CA $232 found 4 days ago
United
Sat, Aug. 23 - Sat, Sep. 6
DTW
Detroit
STL
St. Louis
CA $352 Roundtrip, found 17 hours ago
CA $352
Roundtrip
found 17 hours ago
Select United flight, departing Sat, Aug. 23 from Detroit to St. Louis, returning Sat, Sep. 6, priced at CA $352 found 17 hours ago
Air Canada
Wed, Aug. 27 - Wed, Sep. 3
YVR
Vancouver
STL
St. Louis
CA $404 Roundtrip, found 1 day ago
CA $404
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Aug. 27 from Vancouver to St. Louis, returning Wed, Sep. 3, priced at CA $404 found 1 day ago

Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL)

August is typically the cheapest month to fly

From CA $197 - CA $826 per traveller.

Graph displaying average flight prices per month

Expedia.ca gives you the best tools to secure great deals on flights to St. Charles. Use our easy and convenient booking engine to browse nonstop flights and convenient departure points every day of the year. Search airfares from the top airlines to book your perfect flight to St. Charles. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to St. Charles.

Using our booking engine is simple - just type in your points of travel and preferred dates and Expedia.ca does the rest! If your travel times are flexible, you can find even better bargains by adjusting your flight dates. Browse connecting flights to increase your chances of finding even lower fares. Thanks to Expedia's Best Price Guarantee, you can book your St. Charles flights with full confidence knowing that you've found the best deal online.

Expedia.ca makes the booking process easy and stress-free by offering support along the entire way. Our friendly staff is available 24 hours a day to provide assistance and help you book your ticket. Call us toll-free at 1-888-397-3342 to answer any questions that you may have about your trip to St. Charles.

Looking to save even more? Get additional savings by bundling your St. Charles flight with a hotel and/or car rental to create a bargain travel package. Early birds can discover terrific savings by booking in advance while last minute travelers can enjoy great last minute deals. With Expedia.ca, there's no shortage of options to save even more on your St. Charles trip!

Frequently asked questions

What is the name of St. Charles' airport?
St. Charles is served by a single airport, Lambert-St. Louis Intl. Airport (STL).
How far is Lambert-St. Louis Intl. Airport (STL) from central St. Charles?
Lambert-St. Louis Intl. Airport (STL) is 13 kilometres from downtown St. Charles, so be prepared for a reasonable commute into the centre.
What airport is best to fly into St. Charles?
Located 13 kilometres from the centre of town, Lambert-St. Louis Intl. Airport (STL) is the gateway to St. Charles.
How many airlines fly to St. Charles?
There are 12 airlines connecting St. Charles with 61 airports around the world.
Which airlines fly to St. Charles?
United Airlines and American Airlines are some of the most popular airlines that offer flights to St. Charles. Travellers often pick Chicago to take off from with United Airlines flying this route the most.
How many nonstop flights are there to St. Charles?
With roughly 1,206 nonstop flights operating every week, you'll be arriving in St. Charles before you can ask, "Are we there yet?"
Where are the most popular flights to St. Charles departing from?
Flights to St. Charles from Chicago, Dallas and New York airports are always popular.
How long is the flight to St. Charles Airport?
If you're heading to St. Charles from Chicago, you'll have a flight duration of 1 hour and 22 minutes. Those departing from Dallas should expect to be airborne for around 1 hour and 43 minutes. From New York it's about 3 hours and 1 minute away.
How to book the cheapest flight to St. Charles?
We all know those jet-setters who somehow grab wonderfully cheap plane tickets wherever they go. Would you like to know how to do it for your St. Charles vacation? Don't leave it until the last minute to lock in your flight. Don't stop there, though. Do some research and see if there are a few airports at your destination. Fares often differ depending on the airport you jet into. Make sure you compare prices across airlines too. And finally, remember that the early bird catches the worm. Familiarize yourself with airfare costs and be ready to buy your ticket as soon as you see a great bargain. The best deals don't last long.
Do you have any tips for my flight to St. Charles?
We've pulled together all the info you need to make your flight a pleasant experience. Follow our tips and you'll be hightailing it through airport security and having a ball in St. Charles in next to no time. What to pack in your hand luggage:

  • A plane trip can be a cruisy experience if you take the right gear. Firstly, you'll need toiletry items, such as a toothbrush and hairbrush, a clean set of clothes and a few magazines. Secondly, find room in your carry-on bag for your laptop, a charger, medications and perhaps a cozy neck pillow too. Lastly, be sure to bring your passport, travel documents and your bank cards.

Do not pack the following items in your hand luggage:

  • Check carefully that you don't have a Swiss Army knife lurking in one of the compartments of your hand luggage. Other restricted items include explosive or flammable substances, such as fuel and matches, and liquids and gels in containers with a capacity of more than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • Go for comfort over style. Prepare for temperature changes in the cabin by wearing layers, and wear slightly roomy, flat shoes like slip-ons.
  • Most of us have heard about deep vein thrombosis (DVT), a blood clot condition caused by prolonged periods of sitting. To reduce your risk on board, drink plenty of water, consider wearing compression socks and move your lower limbs often.

How to get through airport security fast when flying to St. Charles?
A little pre-planning before you arrive at the airport will make your trip to St. Charles a pleasure. Below are some handy hints for a swift journey through security:

  • Your boarding pass and travel ID will need to be inspected by airport security. Have them close by so you don't hold up the queue.
  • The X-ray machine is up next. Empty your pockets and remove anything that is likely to set off the scanner's alarm. This includes items like earphones or headphones, as well as your coat or jacket. They'll all need to go on the X-ray conveyor belt.
  • Your electronic gadgets like phones and laptops will also need to go on a tray to be scanned. Don't worry though, you'll be back online soon enough.
  • Any liquids or gels, such as perfume or hand cream, that you want to bring on board need to be in containers no greater than 3.4 ounces (100 millilitres). Also, everything must fit inside a quart-size (one litre), clear zip-close bag.
  • Slip-on shoes are a sensible footwear choice as you're less likely to be asked to remove them when going through security. Big boots and other heavy shoes are usually subjected to additional screening.
  • Airlines won't allow any sharp or pointed objects in your hand luggage. If you need to bring these kinds of items, put them in your checked baggage.

Flights to St. Charles information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
CA $83

Trending flights to St. Charles

Prices were available within the past 7 days and start at CA $42 for one-way flights and CA $83 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Sep. 13 - Sat, Sep. 13
YVR
Vancouver
STL
St. Louis
CA $372 Roundtrip, found 1 day ago
CA $372
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep. 13 from Vancouver to St. Louis, returning Sat, Sep. 13, priced at CA $372 found 1 day ago
*Available to Expedia members.