Cheap flights from Calgary to St. Louis from $178
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 5/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Calgary to St. Louis
Cheap round-trip flights
Cheap one-way flights
Air Canada flights from Calgary to St. Louis
Our best Air Canada deals on Calgary to St. Louis flight tickets
WestJet flights from Calgary to St. Louis
Our best WestJet deals on Calgary to St. Louis flight tickets
See travel insights to St. Louis from
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?
In general, January is the cheapest month to fly from Calgary to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $296. The month of October is another great option to travel to St. Louis, with average flight prices from Calgary averaging around $386.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $296. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $541. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Calgary in the morning is the least expensive time of day to depart. momondo users have found prices as low as $431 when looking at flights departing in the morning. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $431 per ticket.
How far in advance should I book a flight to St. Louis?
You are more likely to see cheaper flights to St. Louis from Calgary when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $450 when searching 13 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Calgary for as low as $294 on momondo.
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 distance between Calgary and Lambert-St Louis is about 1438.9 mi. By plane, this route typically takes 6h 31m.
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?
The number of operators available for flights from Calgary Airport to Lambert-St Louis Airport is 2 as of April 2025.
How old do you have to be to fly from Calgary Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Calgary to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Calgary to St. Louis is American Airlines, representing 59% of all bookings. The subsequent popular airline is Air Canada at 41%.
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 $295 | Free Cancellation | Rating 7.0 9,035 reviews | |||
| PriceFrom $309 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Calgary to St. Louis?
Finding the right flight to St. Louis from Calgary is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.
Can I find flights from Calgary to St. Louis with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to St. Louis from Calgary with this policy.
How can momondo help me find flights from Calgary to St. Louis?
momondo helps you find the best flight between Calgary and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Calgary to St. Louis right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Calgary to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.