Cheap Flights to St. Louis , MO from CA $41

View CA $41 flight on Thu, Oct. 16, 2025Opens in a new window

Popular airlines to St. Louis

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How much is the cheapest flight to St. Louis?

Prices were available within the past 7 days and start at CA $41 for one-way flights and CA $82 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Mon, Aug. 18 - Fri, Aug. 22
DTW
Detroit
STL
St. Louis
CA $82 Roundtrip, found 3 hours ago
CA $82
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Mon, Aug. 18 from Detroit to St. Louis, returning Fri, Aug. 22, priced at CA $82 found 3 hours ago
Delta
Mon, Aug. 18 - Fri, Aug. 22
DTW
Detroit
STL
St. Louis
CA $123 Roundtrip, found 3 hours ago
CA $123
Roundtrip
found 3 hours ago
Select Delta flight, departing Mon, Aug. 18 from Detroit to St. Louis, returning Fri, Aug. 22, priced at CA $123 found 3 hours ago
American Airlines
Thu, Aug. 21 - Mon, Aug. 25
DTW
Detroit
STL
St. Louis
CA $217 Roundtrip, found 3 days ago
CA $217
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Aug. 21 from Detroit to St. Louis, returning Mon, Aug. 25, priced at CA $217 found 3 days ago
United
Thu, Sep. 4 - Mon, Sep. 8
DTW
Detroit
STL
St. Louis
CA $295 Roundtrip, found 3 days ago
CA $295
Roundtrip
found 3 days ago
Select United flight, departing Thu, Sep. 4 from Detroit to St. Louis, returning Mon, Sep. 8, priced at CA $295 found 3 days ago
Frontier Airlines
Wed, Jul. 9 - Wed, Jul. 16
DTW
Detroit
STL
St. Louis
CA $405 Roundtrip, found 1 day ago
CA $405
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Wed, Jul. 9 from Detroit to St. Louis, returning Wed, Jul. 16, priced at CA $405 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 $214 - CA $948 per traveller.

Graph displaying average flight prices per month

Expedia.ca gives you the best tools to secure great deals on flights to St. Louis. 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. Louis. Whatever your travel needs, you can always rely on Expedia.ca to help you find cheap flights to St. Louis.

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. Louis 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. Louis.

Looking to save even more? Get additional savings by bundling your St. Louis 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. Louis trip!

Frequently asked questions

What is the name of St. Louis' airport?
Organize a flight to St. Louis with Expedia and you'll be landing at Lambert-St. Louis Intl. Airport (STL).
How far is Lambert Field from central St. Louis?
If you're staying in central St. Louis, it's a smart idea to work out how you'll get into the city before you arrive. The downtown area is approximately 19 kilometres from Lambert-St. Louis Intl. Airport (STL).
What airport is best to fly into St. Louis?
Travellers flying into St. Louis can opt to hit the tarmac at two major airports. Lambert Field is 19 kilometres away from the centre of town. St. Louis Airport is 40 kilometres away.
How many airlines fly to St. Louis?
There are a total of 12 airlines connecting St. Louis with 61 airports globally.
Which airlines fly to St. Louis?
United Airlines and American Airlines are some of the most popular airlines that offer flights to St. Louis. Travellers often choose Chicago as a departure point with United Airlines operating the most flights on this route.
How many nonstop flights are there to St. Louis?
With approximately 1,206 direct flights operating every week, you'll be hitting the tarmac in St. Louis before you have time to say, "Are we there yet?"
Where are the most popular flights to St. Louis departing from?
The most popular flights to St. Louis take off from Chicago, Dallas and New York airports.
How long is the flight to St. Louis Airport?
Where you depart from determines how long you'll be strapped into your seat. From Chicago to St. Louis, the average flight time is 1 hour and 22 minutes. From Dallas it takes about 1 hour and 43 minutes, and from New York it's 3 hours and 1 minute.
How to book the cheapest flight to St. Louis?
We've all come across those lucky travellers who manage to grab impossibly cheap plane tickets wherever they go. Would you like to know how to do it for your St. Louis 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. Prices often differ depending on which airport you use. Make sure you compare prices across airlines too. Lastly, be prepared to secure your seat quickly if you find a great price. It might not stick around for long! With a bit of know-how and a little good fortune, the ideal airfare will be yours.
Do you have any tips for my flight to St. Louis?
We've pulled together all the info you need to make your flight as pain-free as possible. Follow our insider tips and you'll be speeding through airport security and having a ball in St. Louis in next to no time. What to pack in your hand luggage:

  • First, pack in your passport, travel documents, credit cards and medications. Next, you'll want some in-flight entertainment to help pass the time. A thrilling book and a tablet crammed with your favourite shows are some wonderful options. If you plan to catch more than just forty winks, a neck pillow and some noise-cancelling headphones will also come in handy. Finally, find room for a toothbrush and some deodorant so you'll arrive at your destination looking and feeling fresh.

Do not pack the following items in your hand luggage:

  • Check carefully that you don't have a sharp object hiding in your hand luggage. Other prohibited items include flammable or explosive products, such as bleach and fuel, and gels and liquids in containers with a capacity of more than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • Comfort should be your priority when deciding what to wear on board. Loose clothing is a sensible option, as are flat, closed-toe shoes.
  • You're probably aware of deep vein thrombosis (DVT), a blood clotting condition caused by long periods of inactivity. To lessen your risk on board, drink lots of water, consider wearing compression socks or tights and do gentle foot and leg exercises in your seat.

How to get through airport security fast when flying to St. Louis?
A little pre-planning before your flight will make your trip to St. Louis quick and painless. We've compiled some useful tips and tricks for a speedy journey through security:

  • Security personnel first need to determine that you have a valid ID and travel documents before you're allowed to proceed any further. Have them ready for inspection.
  • Next up is the X-ray machine. Empty your pockets and remove anything that is likely to set off the alarm. This includes items like headphones or earphones, as well as heavy jackets or coats. They'll all need to go on the X-ray conveyor belt.
  • All your electronic devices, including your phone and tablet, are also required to be separately scanned.
  • Any liquids or gels, such as perfume or hand cream, that you want to bring on board must be no larger than 3.4 ounces (100 millilitres). They must also all fit inside a quart-size (one litre), clear zip-lock bag.
  • Slip-on shoes are a clever footwear choice as you're less likely to have to remove them when going through security. Big boots and other heavy-style shoes are often subjected to additional screening.
  • Sharp or pointed objects (like knives and scissors) are not allowed in the cabin. They'll be confiscated at security, so pack them safely away in your checked luggage.

Flights to St. Louis information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
CA $179

Trending flights to St. Louis

Prices were available within the past 7 days and start at CA $41 for one-way flights and CA $82 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Sep. 9 - Sat, Sep. 20
YYC
Calgary
STL
St. Louis
CA $424 Roundtrip, found 3 hours ago
CA $424
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Tue, Sep. 9 from Calgary to St. Louis, returning Sat, Sep. 20, priced at CA $424 found 3 hours ago
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