Cheap Flights to Alton , IL from CA $246

View CA $246 flight on Tue, Sep. 23, 2025Opens in a new window

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How much is the cheapest flight to Alton?

Prices were available within the past 7 days and start at CA $246 for one-way flights and CA $424 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Sep. 11 - Sun, Sep. 21
YYC
Calgary
STL
St. Louis
CA $424 Roundtrip, found 5 days ago
CA $424
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Sep. 11 from Calgary to St. Louis, returning Sun, Sep. 21, priced at CA $424 found 5 days ago
Air Canada
Tue, Sep. 23 - Tue, Oct. 7
YVR
Vancouver
STL
St. Louis
CA $438 Roundtrip, found 4 days ago
CA $438
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Sep. 23 from Vancouver to St. Louis, returning Tue, Oct. 7, priced at CA $438 found 4 days ago
United
Wed, Sep. 3 - Fri, Sep. 5
YVR
Vancouver
STL
St. Louis
CA $445 Roundtrip, found 5 days ago
CA $445
Roundtrip
found 5 days ago
Select United flight, departing Wed, Sep. 3 from Vancouver to St. Louis, returning Fri, Sep. 5, priced at CA $445 found 5 days ago
Delta
Tue, Sep. 23 - Thu, Oct. 2
YVR
Vancouver
STL
St. Louis
CA $445 Roundtrip, found 5 days ago
CA $445
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Sep. 23 from Vancouver to St. Louis, returning Thu, Oct. 2, priced at CA $445 found 5 days ago
WestJet
Mon, Oct. 27 - Tue, Oct. 28
YVR
Vancouver
STL
St. Louis
CA $585 Roundtrip, found 4 days ago
CA $585
Roundtrip
found 4 days ago
Select WestJet flight, departing Mon, Oct. 27 from Vancouver to St. Louis, returning Tue, Oct. 28, priced at CA $585 found 4 days 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 $945 per traveller.

Graph displaying average flight prices per month

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

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 Alton 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 Alton.

Looking to save even more? Get additional savings by bundling your Alton 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 Alton trip!

Frequently asked questions

What is the name of Alton's airport?
Alton has only one airport, Lambert-St. Louis Intl. Airport (STL).
How far is Lambert-St. Louis Intl. Airport (STL) from central Alton?
If you're staying in central Alton, it's wise to work out how you'll get into the city before you land. The downtown area is 23 kilometres from STL.
What airport is best to fly into Alton?
With one major airport in Alton, it won't take very long to discover the best flight. You'll be taking off to Lambert Field, which sits around 23 kilometres from downtown.
How many airlines fly to Alton?
There are a total of 12 air carriers connecting Alton with 61 airports across the globe.
Which airlines fly to Alton?
United Airlines and American Airlines operate the majority of flights to Alton. One of the most common ways to travel there is with a United Airlines flight leaving from Chicago.
How many nonstop flights are there to Alton?
Flying to somewhere new is much easier when there aren't any lengthy stopovers. If you're travelling to Alton, the fantastic news is that there are 1,206 nonstop flights each week.
Where are the most popular flights to Alton departing from?
Travellers often jet off from Chicago, Dallas and New York airports when going to Alton.
How long is the flight to Alton Airport?
If it's Chicago you're leaving behind, you'll be airborne for around 1 hour and 22 minutes before you touchdown in Alton. Terminal to terminal from Dallas takes approximately 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 Alton?
Don't leave locking in your flight to Alton until the very last minute. That's one trick well-versed jet-setters use to get the best prices. Booking ahead means more choices and more affordable flights. Don't stop there, however. Do some research and see if there are a couple of airports at your destination. Ticket prices often differ depending on which airport you use. Be sure to compare fares across air carriers as well. Last of all, another easy way to save some money is be ready to book fast. If you find an amazing deal, don't think twice --- snap it up while the opportunity's there.
Do you have any tips for my flight to Alton?
If you're poorly prepared, airports and flying can be tough. But there's no need to worry. Follow these helpful hints and enjoy a comfortable start to your vacation in Alton. What to pack in your hand luggage:

  • It's simple --- first, put in your passport, travel docs, bank cards and daily medications. Next, you'll need some in-flight entertainment to help pass the time. A thrilling book and a laptop crammed with your favourite shows are good options. If you plan to catch up on some sleep, a quality neck pillow and some noise-cancelling headphones will also be useful. Finally, squeeze in a few toiletry items so you'll step off the plane feeling fresh as a daisy.

Do not pack the following items in your hand luggage:

  • Leave all your full-sized bottles of shampoo and hairspray in your checked baggage. Any liquids or gels in your carry-on bag larger than 3.4 ounces (100 millilitres) will be confiscated by security. Sharp or pointed objects, like your precious pocket knife, and products which are flammable or explosive, such as aerosol cans, flares and matches, are also not allowed.

What to wear on a flight:

  • Your priority is to be as comfortable as you can. Choose slip-on footwear, dress in loose, breathable clothing and don't forget to take a sweater in case it gets chilly in the cabin.
  • Deep vein thrombosis (DVT) is a risk on long-haul flights. It results from blood clots forming due to poor circulation and inactivity, so do some gentle leg and foot exercises in your seat and consider wearing compression tights or socks.

How to get through airport security fast when flying to Alton?
The answer is simple --- be organized. We've rounded up some useful tips for a fuss-free trip through airport security. Watch out Alton, here you come:

  • Airport security personnel first need to know that you have a valid ID and matching boarding pass before you're allowed to proceed any further. Have them ready to show.
  • Next up, both you and your hand luggage will be X-rayed. To speed things up, remove anything that might trigger the alarms. Items such as your jacket, belt and earphones need to go through the machine.
  • Your electronic devices like phones and laptops will also have to go through the machine to be scanned. No need to worry though, you'll be back online in no time.
  • Want to bring along your favourite hand and nail cream? As long as the volume is no larger than 3.4 ounces (100 millilitres) and it's stored in a clear zip-lock bag, you can bring it with you in your carry-on.
  • There's a possibility that you'll be required to remove your shoes for scanning, so wearing slip-on sneakers is always a clever idea.
  • Avoid taking prohibited items in your carry-on bag. If you have any sharp objects like a pocket knife or tools, put them in your checked suitcase. They won't be allowed in the cabin.

Flights to Alton information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
CA $423

Trending flights to Alton

Prices were available within the past 7 days and start at CA $246 for one-way flights and CA $424 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Sep. 11 - Sun, Sep. 21
YYC
Calgary
STL
St. Louis
CA $424 Roundtrip, found 5 days ago
CA $424
Roundtrip
found 5 days ago
Select American Airlines flight, departing Thu, Sep. 11 from Calgary to St. Louis, returning Sun, Sep. 21, priced at CA $424 found 5 days ago
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