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CA $288 Cheap Flights from Calgary (YYC) to St. Louis (STL)

View CA $288 flight on Sat, Sep 5, 2026Opens in a new window

Popular airlines from Calgary International Airport (YYC) to Lambert-St. Louis International Airport (STL)

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Cheap flights from Calgary (YYC) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $288 for one-way flights and CA $490 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Sep 4 - Fri, Sep 11
YYC
Calgary
STL
St. Louis
CA $490 Roundtrip, found 2 days ago
CA $490
Roundtrip
found 2 days ago
Select American Airlines flight, departing Fri, Sep 4 from Calgary to St. Louis, returning Fri, Sep 11, priced at CA $490 found 2 days ago
American Airlines
Tue, Oct 20 - Tue, Oct 27
YYC
Calgary
STL
St. Louis
CA $500 Roundtrip, found 2 hours ago
CA $500
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Tue, Oct 20 from Calgary to St. Louis, returning Tue, Oct 27, priced at CA $500 found 2 hours ago
Delta
Tue, Sep 15 - Tue, Sep 22
YYC
Calgary
STL
St. Louis
CA $500 Roundtrip, found 2 days ago
CA $500
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 15 from Calgary to St. Louis, returning Tue, Sep 22, priced at CA $500 found 2 days ago
Delta
Tue, Oct 20 - Tue, Oct 27
YYC
Calgary
STL
St. Louis
CA $510 Roundtrip, found 2 hours ago
CA $510
Roundtrip
found 2 hours ago
Select Delta flight, departing Tue, Oct 20 from Calgary to St. Louis, returning Tue, Oct 27, priced at CA $510 found 2 hours ago
American Airlines
Sun, Sep 6 - Tue, Sep 15
YYC
Calgary
STL
St. Louis
CA $513 Roundtrip, found 4 hours ago
CA $513
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Sun, Sep 6 from Calgary to St. Louis, returning Tue, Sep 15, priced at CA $513 found 4 hours ago
Delta
Wed, Oct 14 - Fri, Oct 23
YYC
Calgary
STL
St. Louis
CA $517 Roundtrip, found 2 days ago
CA $517
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Oct 14 from Calgary to St. Louis, returning Fri, Oct 23, priced at CA $517 found 2 days ago
Delta
Tue, Sep 15 - Mon, Sep 28
YYC
Calgary
STL
St. Louis
CA $527 Roundtrip, found 1 day ago
CA $527
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Sep 15 from Calgary to St. Louis, returning Mon, Sep 28, priced at CA $527 found 1 day ago
United
Tue, Oct 20 - Tue, Oct 27
YYC
Calgary
STL
St. Louis
CA $592 Roundtrip, found 2 hours ago
CA $592
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Oct 20 from Calgary to St. Louis, returning Tue, Oct 27, priced at CA $592 found 2 hours ago
Air Canada
Tue, Oct 20 - Tue, Oct 27
YYC
Calgary
STL
St. Louis
CA $607 Roundtrip, found 2 hours ago
CA $607
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Tue, Oct 20 from Calgary to St. Louis, returning Tue, Oct 27, priced at CA $607 found 2 hours ago
Alaska Airlines
Thu, Sep 17 - Mon, Sep 28
YYC
Calgary
STL
St. Louis
CA $760 Roundtrip, found 1 day ago
CA $760
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Sep 17 from Calgary to St. Louis, returning Mon, Sep 28, priced at CA $760 found 1 day ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city centre is 20 minutes. Flights from CA $596
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city centre20 min
Flights from CA $596

Frequently asked questions

How much does a flight from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) cost?
You can find cheap one-way flights from CA $288 and cheap return flights from CA $490 YYC to STL with Expedia. One-way flights typically cost between CA$348 and CA$1152, and return flights often range between CA$736 and CA$2181. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when YYC to STL ticket fares go up or down.
What is the cheapest month to fly from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
April is typically the cheapest month to fly from Calgary International Airport (YYC) to Lambert-St. Louis International Airport (STL), with average return fares around CA$607. April often sees lower prices as it falls outside of peak holiday travel seasons, leading to reduced demand and more competitive airline pricing. Other budget-friendly months to consider for your trip include February and May.
Which airlines fly direct from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Enter YYC to STL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Delta is one of the cheapest airlines offering connecting return flights from Calgary International Airport (YYC) to Lambert-St. Louis International Airport (STL), with prices starting from around CA$462 for flights that can be booked for departure within the next year. These flights typically include a layover in Salt Lake City International (SLC). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.
How do I find cheap flights from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
To find a cheap flight from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The best time to fly from Calgary International Airport (YYC) to Lambert-St. Louis International Airport (STL) is typically April. This month offers a great balance – prices are reasonable at around CA$607 for a return flight, and you'll have plenty of flight options since it's a popular time to travel. April brings pleasant spring weather, making it an ideal time to visit. If you're flexible, April gives you both affordable fares and excellent flight schedules to work with.
How many flights per day from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are approximately 49 connecting flights per day from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.). Some common connection points include Pearson Intl. (YYZ), Seattle - Tacoma Intl. (SEA), and Vancouver Intl. (YVR).
What is the earliest flight from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The earliest flight from Calgary International Airport (YYC) to Lambert-St. Louis International Airport (STL) typically departs around 12:15 AM local time. This service is offered by airlines such as WestJet and Delta. Please note that this is a seasonal service, active only in March and April. An early departure like this can be great for maximizing your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
You'll typically find the most flights from Calgary International Airport (YYC) to Lambert-St. Louis International Airport (STL) on a Monday, with around 39 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include WestJet, United, and Air Canada. While Monday is the busiest, flight options are fairly consistent throughout the week, with only a slight variation in the number of flights on other days.
What are the most popular departure times for flights from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
The most popular departure times for flights from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) are in the early morning, from 6am to 9am. Many major carriers, including Delta, United and American Airlines, offer flights during this window. Many travelers prefer this because it allows for an early arrival at your destination, giving you more time to settle in or start your day.
How long does it take to fly from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
There are no nonstop flights from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.). The shortest flights typically involve one stop and take around 7 hours 30 minutes. Flights with two or more stops usually take longer, averaging about 15 hours 18 minutes. The distance between these two airports is approximately 2,298 kilometres. Keep in mind that actual travel times can vary based on layover duration, routing, and weather conditions.
Can you fly business or first class from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
Yes, you can fly business class or first class between YYC and STL. You can fly business class with Air Canada and United.First class cabins are available on Alaska Airlines, Air Canada, Delta, and United.
How do I earn miles on a Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight with Expedia?
It's easy to earn miles on a Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for St. Louis, MO (STL) from Calgary, AB (YYC)?
If you're planning to travel to St. Louis from Calgary Intl. (YYC), you can fly directly into Lambert-St. Louis Intl. (STL). Some flights may connect through major hubs like Pearson Intl. (YYZ), Vancouver Intl. (YVR), or Winnipeg James Armstrong Richardson Intl. (YWG) before reaching St. Louis. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) at the last minute?
Typically, booking a last minute flight from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package?
Securing a Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.)?
If you booked your Calgary, AB (YYC-Calgary Intl.) to St. Louis, MO (STL-Lambert-St. Louis Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Calgary Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Air Canada, Alaska Airlines, American Airlines, Delta, United, WestJet
Roundtrip price
CA $490
Distance
2284 km

Book with confidence

Calgary to St. Louis Flights

The easy way to book your flights from Calgary to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Calgary whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Calgary to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Calgary Intl., YYC to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Calgary to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Calgary currently is just CA $490 rising to CA $760.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Calgary 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Calgary to St. Louis Flights

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