Cheap Flights from Calgary to St. Louis from C$ 343

How to find the cheapest flight from
Calgary (YYC) to St. Louis (STL)

All the information you need to plan the best YYC to STL flight in 2021: compare Calgary to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

YYC - STL Price	C$ 362 - C$ 635
STL Temperature	0 - 27 °C
STL Precipitation	56 - 119 mm

Popular in September High demand for flights, 30% potential price rise
Cheapest in April Best time to find cheap flights, 19% potential price drop
Round-trip from €362 From Calgary to Lambert-St Louis
One-way from C$ 343 One-way flight from Calgary to Lambert-St Louis

Popular in

September

High demand for flights, 30% potential price rise

Cheapest in

April

Best time to find cheap flights, 19% potential price drop

Round-trip from

€362

From Calgary to Lambert-St Louis

One-way from

C$ 343

One-way flight from Calgary to Lambert-St Louis

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.

What is the cheapest day to fly round-trip from Calgary to St. Louis?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Calgary to St. Louis?

Users have found that booking a flight from Calgary to St. Louis at least 34 days early can save you up to 43% on average compared to booking a flight this week. If booking 34 days before your flight isn’t an option for you, users have found flights from Calgary to St. Louis for as little as C$ 449 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as C$ 609 for flights departing within the next 3 days.

What is the cheapest month to fly from Calgary to St. Louis?

The best pricing can be found in the month of April. Prices to St. Louis from Calgary average C$ 445. You can even find prices in April for less than C$ 445, as users have found deals to St. Louis from as low as C$ 325. The month of September appears to be one of the more expensive times to travel to St. Louis from Calgary. Flying in the targeted month can save you up to 42%.

When is the cheapest time to fly from Calgary to St. Louis (YYC - STL)?

It’s typically best to fly out from Calgary to St. Louis at noon. Doing so could potentially save you 62% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap flights from Calgary to St. Louis in September, October 2021

The best prices found for YYC to STL flights for September, October

16 Oct - 23 Oct

C$ 418pp

YYC

Calgary

Delta

1 STOP

STL

Lambert-St Louis

STL

Lambert-St Louis

Delta

1 STOP

YYC

Calgary

18 Oct - 20 Oct

C$ 421pp

YYC

Calgary

WestJet

1 STOP

STL

Lambert-St Louis

STL

Lambert-St Louis

WestJet

1 STOP

YYC

Calgary

20 Oct - 23 Oct

C$ 426pp

YYC

Calgary

WestJet

1 STOP

STL

Lambert-St Louis

STL

Lambert-St Louis

WestJet

1 STOP

YYC

Calgary

Calgary to St. Louis 2021 flight deals

Cheap flights to St. Louis from Calgary found for this year

21 Nov - 3 Dec

C$ 416pp

YYC

Calgary

Delta

1 STOP

STL

Lambert-St Louis

STL

Lambert-St Louis

Delta

2 STOPS

YYC

Calgary

16 Oct - 23 Oct

C$ 418pp

YYC

Calgary

Delta

1 STOP

STL

Lambert-St Louis

STL

Lambert-St Louis

Delta

1 STOP

YYC

Calgary

26 Nov - 5 Dec

C$ 421pp

YYC

Calgary

United Airlines

1 STOP

STL

Lambert-St Louis

STL

Lambert-St Louis

United Airlines

1 STOP

YYC

Calgary

Last minute flights from Calgary to St. Louis

Late deals on round-trip flights to St. Louis from Calgary, departing today and this week

3 Oct - 9 Oct

C$ 566pp

YYC

Calgary

WestJet

1 STOP

STL

Lambert-St Louis

STL

Lambert-St Louis

WestJet

1 STOP

YYC

Calgary

3 Oct - 8 Oct

C$ 595pp

YYC

Calgary

Delta

1 STOP

STL

Lambert-St Louis

STL

Lambert-St Louis

Delta

1 STOP

YYC

Calgary

3 Oct - 9 Oct

C$ 614pp

YYC

Calgary

Multiple Airlines

2 STOPS

STL

Lambert-St Louis

STL

Lambert-St Louis

American Airlines

1 STOP

YYC

Calgary

One-way flights to Lambert-St Louis from Calgary

The cheapest one-way flights from Calgary to St. Louis

6:00 a.m. - 2:05 p.m.

Delta

1 stop

7h 05m

YYC - STL

C$ 343

Delta

3:10 p.m. - 11:54 a.m.

Air Canada

2 stops

19h 44m

YYC - STL

C$ 401

8:05 p.m. - 5:22 p.m.

WestJet

2 stops

20h 17m

YYC - STL

C$ 525

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Calgary</span> to <span class="emphasized">St. Louis</span> flights.

Flight FAQs

From Calgary to St. Louis

Which airlines flying from Calgary to Lambert-St Louis have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, American Airlines, and WestJet flying from Calgary to Lambert-St Louis have implemented new flexible cancellation policies.

Can I find flights from Calgary to St. Louis for under C$ 500 on Cheapflights?

Yes, there are multiple flights from Calgary to St. Louis for under C$ 500. The cheapest flight booked recently is on Delta for just C$ 416, but on average you can expect to pay C$ 439.

Are there last-minute flights available from Calgary to St. Louis for under C$ 600?

There are currently 8+ open flights from Calgary to St. Louis within the next 7 days for less than C$ 600.

How popular is this Calgary to St. Louis flight route?

Flights from Calgary to Lambert-St Louis have been viewed 79 times in the past calendar month.

What are the cheapest airlines flying from Calgary to St. Louis round-trip?

Flying on Delta is currently your cheapest option to St. Louis, with prices starting at C$ 416. Additional round-trip tickets that might be worth considering are offered by United Airlines and WestJet, with the lowest prices starting at C$ 421 and C$ 426, respectively. Delta is priced at 6% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Calgary to St. Louis one-way?

C$ 343 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Air Canada and WestJet, with prices starting from C$ 401 and C$ 525, respectively.

What are the most popular airlines that fly from Calgary to St. Louis?

The most popular airlines flying from Calgary to St. Louis are American Airlines, Air Canada and Delta. Something to consider prior to booking your flight.

What are the cheapest flights from Calgary to St. Louis?

Looking at all options, your cheapest flight can be booked for C$ 195. While the most popular route (Calgary - Lambert-St Louis) can be booked for C$ 418 on average our data indicates C$ 588 when flying from Calgary to St. Louis

COVID Restrictions

View COVID Travel Restrictions for St. Louis, MO

Do I need a COVID test to fly to St. Louis from Calgary?

Information is based on travel restrictions from Calgary to Lambert-St Louis

Most visitors from Calgary need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.

COVID-19 testing requirements
Visitors from Calgary must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Calgary are not required to quarantine after entering Lambert-St Louis.

Do I need a test to fly back to Calgary from St. Louis?

Returning to Calgary from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Calgary.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Calgary.

Hide COVID Travel Restrictions for St. Louis, MO

Destination information for St. Louis

Things to know before you go - useful duration and weather info for your trip from Calgary to St. Louis.

C$ 1 = $0.79

28.0 °C

76.0 mm

Airports servicing Calgary

Calgary (YYC)

Airports servicing St. Louis

St. Louis (STL)

Airline	Cheapest	Average	Flexibility	On-time
Delta	C$ 202	C$ 487	No cancel fee	N/A	Search Delta flights
American Airlines	C$ 276	C$ 560	No cancel fee	71%	Search American Airlines flights
WestJet	C$ 320	C$ 439	No cancel fee	60%	Search WestJet flights
United Airlines	C$ 342	C$ 763	No cancel fee	69%	Search United Airlines flights
Air Canada	C$ 355	C$ 521	No cancel fee	67%	Search Air Canada flights

Cheap flights from Calgary to St. Louis

The best prices from Calgary to Lambert-St Louis are usually found in April or June, booked 34 days in advance, depart on a Wednesday or Saturday and return on a Monday

How to find the cheapest flight from Calgary (YYC) to St. Louis (STL)

All the information you need to plan the best YYC to STL flight in 2021: compare Calgary to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

What is the cheapest day to fly round-trip from Calgary to St. Louis?

How far in advance should I book a flight from Calgary to St. Louis?

What is the cheapest month to fly from Calgary to St. Louis?

When is the cheapest time to fly from Calgary to St. Louis (YYC - STL)?

Cheap flights from Calgary to St. Louis in September, October 2021

The best prices found for YYC to STL flights for September, October

Calgary to St. Louis 2021 flight deals

Cheap flights to St. Louis from Calgary found for this year

Last minute flights from Calgary to St. Louis

Late deals on round-trip flights to St. Louis from Calgary, departing today and this week

One-way flights to Lambert-St Louis from Calgary

The cheapest one-way flights from Calgary to St. Louis

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Calgary</span> to <span class="emphasized">St. Louis</span> flights.

Flight FAQs

From Calgary to St. Louis

Which airlines flying from Calgary to Lambert-St Louis have flexible cancellations due to COVID-19?

Can I find flights from Calgary to St. Louis for under C$ 500 on Cheapflights?

Are there last-minute flights available from Calgary to St. Louis for under C$ 600?

How popular is this Calgary to St. Louis flight route?

What are the cheapest airlines flying from Calgary to St. Louis round-trip?

What are the cheapest airlines to fly from Calgary to St. Louis one-way?

What are the most popular airlines that fly from Calgary to St. Louis?

What are the cheapest flights from Calgary to St. Louis?

Related searches

Flights to St. Louis (STL) from Calgary (YYC)

Other flights from Calgary

Other flights to St. Louis

Rent a Car

COVID Restrictions

Do I need a COVID test to fly to St. Louis from Calgary?

Do I need a test to fly back to Calgary from St. Louis?

Destination information for St. Louis

Things to know before you go - useful duration and weather info for your trip from Calgary to St. Louis.

Airports servicing Calgary

Airports servicing St. Louis

Top 5 airlines flying from Calgary to Lambert-St Louis

The chart below displays the airlines Cheapflights users travelling from Calgary to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2021.

How to find the cheapest flight from
Calgary (YYC) to St. Louis (STL)