Cheap flights from Calgary to St. Louis from C$ 250
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Calgary to St. Louis departing on 25/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Calgary to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
The month of January is, on average, the cheapest month to fly to St. Louis from Calgary, with most prices found around C$ 416. If you don’t want to visit St. Louis in January, then you should wait until October to fly from Calgary, when ticket prices are also cheap, with an average price of C$ 542.
What is the cheapest day to depart on your flight to St. Louis?
Our data shows that Sunday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 441. The most expensive day to fly to St. Louis is Friday, with ticket prices averaging around C$ 783.
What is the cheapest time of day to depart on your flight to St. Louis?
The cheapest time of day to fly to St. Louis is in the afternoon when flights can be purchased for as low as C$ 491. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are C$ 720 on average. Flights to St. Louis from Calgary in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.
How have Calgary to St. Louis flight prices changed over time?
As of April 2025, prices for Calgary to St. Louis flights are approximately 5% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Calgary to Lambert-St Louis?
Delta, American Airlines, and Air Canada are the most popular carriers operating from Calgary to Lambert-St Louis
Which airlines fly to St. Louis?
Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to St. Louis from Calgary according to our data. Air Canada is the first choice among our users, with 40% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
When to book flights from Calgary to St. Louis
Cheap Calgary to St. Louis (YYC to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Calgary to St. Louis
How far is Calgary to Lambert-St Louis by plane?
The straight-line distance from Calgary to Lambert-St Louis is 2315.6 km. In terms of flight time, this usually takes a little over 9h 10m.
When did momondo last update prices for flights from Calgary Airport to Lambert-St Louis Airport?
Prices for flights from Calgary Airport to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Calgary Airport to Lambert-St Louis Airport?
As of April 2025, there are 4 operators available to choose from for flights from Calgary Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Calgary Airport to Lambert-St Louis Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Calgary Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Calgary to St. Louis?
Based on momondo bookings for flights between Calgary and St. Louis, the leading airline is Air Canada, making up 40% of the total bookings. Other popular airlines include WestJet with 35%, United Airlines with 15%, and Delta with 10%.
Best airlines flying from Calgary to St. Louis
Compare and see reviews for airlines that fly from Calgary to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 342 | Free Cancellation | Rating 7.0 9,085 reviews | |||
| PriceFrom C$ 384 | Free Cancellation | Rating 8.0 7,911 reviews | |||
| PriceFrom C$ 452 | Free Cancellation | Rating 7.4 8,636 reviews | |||
| PriceFrom C$ 511 | Free Cancellation | Rating 7.2 2,802 reviews |
Travelling to a place near St. Louis?
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Why should I use momondo to find a flight deal from Calgary to St. Louis?
It is quick and easy to find Calgary to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.
Can I find flights from Calgary to St. Louis with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Calgary to St. Louis flights to just show those with flexible booking policies.
How can momondo help me find flights from Calgary to St. Louis?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Calgary.
I’m not ready to book a flight from Calgary to St. Louis right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Calgary to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.