Cheap Flights to Alton , IL from CA $108

View CA $108 flight on Tue, Mar 17, 2026Opens in a new window

Popular airlines to Alton

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How much is the cheapest flight to Alton?

Prices were available within the past 7 days and start at CA $108 for one-way flights and CA $216 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Mar 24 - Tue, Apr 14
SEA
Seattle
STL
St. Louis
CA $216 Roundtrip, found 4 days ago
CA $216
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Mar 24 from Seattle to St. Louis, returning Tue, Apr 14, priced at CA $216 found 4 days ago
Delta
Sat, Apr 11 - Tue, Apr 14
SEA
Seattle
STL
St. Louis
CA $232 Roundtrip, found 5 hours ago
CA $232
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, Apr 11 from Seattle to St. Louis, returning Tue, Apr 14, priced at CA $232 found 5 hours ago
Alaska Airlines
Sat, Apr 11 - Tue, Apr 14
SEA
Seattle
STL
St. Louis
CA $246 Roundtrip, found 5 hours ago
CA $246
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Sat, Apr 11 from Seattle to St. Louis, returning Tue, Apr 14, priced at CA $246 found 5 hours ago
Hawaiian Airlines
Thu, Mar 12 - Thu, Mar 19
SEA
Seattle
STL
St. Louis
CA $298 Roundtrip, found 2 hours ago
CA $298
Roundtrip
found 2 hours ago
Select Hawaiian Airlines flight, departing Thu, Mar 12 from Seattle to St. Louis, returning Thu, Mar 19, priced at CA $298 found 2 hours ago
United
Sat, May 23 - Mon, Jun 8
YVR
Vancouver
STL
St. Louis
CA $351 Roundtrip, found 4 hours ago
CA $351
Roundtrip
found 4 hours ago
Select United flight, departing Sat, May 23 from Vancouver to St. Louis, returning Mon, Jun 8, priced at CA $351 found 4 hours ago

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

October is typically the cheapest month to fly

From CA $193 - CA $632 per traveller.

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.

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Frequently asked questions

What is the name of Alton's airport?
Lambert-St. Louis Intl. Airport (STL) is the main airport serving Alton.
How far is Lambert Field from central Alton?
It's 23 kilometres from STL to downtown Alton. Make things easier by working out the best way of travelling from the terminal to the city centre before you touchdown.
What airport is best to fly into Alton?
STL is the only major airport in Alton. Before your flight, it's a good idea to find out a little about it. It is located 23 kilometres from the downtown area.
How many airlines fly to Alton?
There are 12 airlines connecting Alton to 61 airports from all over the globe.
Which airlines fly to Alton?
United Airlines and American Airlines offer the most flights to Alton. One of the most preferred ways to travel there is on a United Airlines flight from Chicago.
How many nonstop flights are there to Alton?
Flying to somewhere new is much more straightforward when there aren't any stopovers involved. If you're off to Alton, the awesome news is that there are 1,206 nonstop flights every week.
Where are the most popular flights to Alton departing from?
A large number of flights to Alton depart from Chicago, Dallas and New York airports.
How long is the flight to Alton Airport?
Where you depart from determines how much of the in-flight entertainment you'll get to enjoy. From Chicago to Alton, 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 Alton?
We all know those travellers who somehow manage to get incredibly cheap plane tickets wherever they go. Eager to know how to do it for your Alton vacation? Don't leave it until the last moment to secure your flight. Don't stop there, though. Do some research and find out if there are a few airports at your destination. Ticket prices often differ depending on the airport you pick. Make sure you compare prices across air carriers as well. Lastly, be prepared to secure your seat quickly if you stumble on a great deal. It might not be available for long. With a bit of knowledge and some good fortune, the ideal airfare will be yours.
Do you have any tips for my flight to Alton?
No matter where you're coming from, flying can be a pleasurable experience if you're prepared. Follow these handy travel tips that will get your Alton escape started on the right note. What to pack in your hand luggage:

  • First of all, put in your passport, important documents, wallet and medications. Next, you'll want some in-flight entertainment to while away the hours. A juicy book and a laptop crammed with your favourite shows are some wonderful options. If you hope to take a short nap, a quality neck pillow and some earplugs will also be useful. Finally, squeeze in a toothbrush and some deodorant so you'll hop off the plane looking and feeling fresh.

Do not pack the following items in your hand luggage:

  • Double-check that you don't have a Swiss Army knife lurking in one of the zippers of your carry-on luggage. Other restricted items include explosive or flammable goods, such as fuel and matches, and liquids and gels in containers larger than 3.4 ounces (100 millilitres).

What to wear on a flight:

  • You'll want to choose comfort over style. Prepare for temperature changes by wearing layers, and pick flat, easy-to-remove shoes like slip-ons.
  • Deep vein thrombosis (DVT), a blood clotting condition caused by prolonged inactivity, can be a risk on long-haul flights. Wander around the cabin and stretch your legs or do some simple exercises in your seat to improve your circulation.

How to get through airport security fast when flying to Alton?
Being prepared before you get to the airport can make your getaway to Alton a piece of cake. Check out our handy hints for a swift journey through security:

  • First things first. Your passport and boarding pass will need to be inspected by airport security personnel. Keep them handy to avoid fumbling around for them.
  • Your coat, belt, keys and other contents of your pockets, like your headphones, will need to go on a tray through the X-ray machine. Make the whole process faster by removing them as it gets closer to your turn.
  • Your electronic gadgets like phones and laptops will also need to go on a tray for inspection. No need to worry though, you'll be back online soon enough.
  • Don't forget to remove liquids and gels from your carry-on luggage. They often need to be sent through the X-ray machine separately. Each item should be in a container no larger than 3.4 ounces (100 millilitres) and everything must fit in a single quart-size (one litre), clear zip-lock bag.
  • Slip-on shoes are a sensible footwear choice as you're less likely to be required to remove them when going through security. Hiking boots and other bulky shoes are usually subjected to extra screening.
  • Avoid taking prohibited items in your carry-on bag. If you have any sharp or pointed objects, pack them in your checked suitcase. They won't be allowed on board and will be confiscated.

Flights to Alton information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
CA $216

Trending flights to Alton

Prices were available within the past 7 days and start at CA $108 for one-way flights and CA $216 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, May 23 - Mon, Jun 8
YVR
Vancouver
STL
St. Louis
CA $351 Roundtrip, found 4 hours ago
CA $351
Roundtrip
found 4 hours ago
Select United flight, departing Sat, May 23 from Vancouver to St. Louis, returning Mon, Jun 8, priced at CA $351 found 4 hours ago

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