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

Cheapflights users have booked flights from St. Louis to Montreal round-trip from $473. Other airlines that can offer you cheap pricing are Air Canada, from $579, and American Airlines, from $588. Delta is currently priced 20% below the average price you’ll pay for this route.

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

The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $265. However, be on the lookout for offers from Air Canada and American Airlines, as they are both options that can get you from St. Louis to Montreal for a low price.

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

Before booking your flight from St. Louis to Montreal check out the most popular airlines for this route: American Airlines, Air Canada or Delta.

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

Yes, there are multiple flights from St. Louis to Montreal for under $500. The cheapest flight booked recently is on Delta for just $473, but on average you can expect to pay $529.

Are there last-minute flights available from St. Louis to Montreal for under $900?

There are currently 3+ open flights from St. Louis to Montreal within the next 7 days for less than $900.

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

Some of our airline partners flying from Lambert-St Louis to Montreal have new flexible policies in place due to COVID-19. Air Canada, Delta, and American Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like Air Canada with this kind of flexibility.

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

Leaving on a Saturday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 134% on the overall cost on flights from St. Louis to Montreal.

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

Flights from St. Louis to Montreal lean towards being more expensive in June. Prices are generally better when you fly from St. Louis to Montreal in May, with the cheapest ticket starting at $330.

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

A simple way to save on the total cost of your ticket is to fly from St. Louis to Montreal in the afternoon. If you’re flexible enough to do this you can expect to save up to 7% on your trip compared to booking a flight at noon.

What airport do you fly from for flights from St. Louis to Montreal?

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Montreal. On average, Lambert-St Louis has 0 outbound flights to Montreal per day from 3 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

What does STL to YUL mean?

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Montreal Pierre Elliott Trudeau Intl Airport flight would often be abbreviated as a STL to YUL flight. Montreal St Hubert Airport (YHU) are other airports near this flight route and their unique identifiers/IATA codes.

Flights from St. Louis, MO to Montreal, Canada from $265

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STL — YMQ

Jun 4 — Jun 111

Round-tripOne-way

1 adult, Economy

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The best prices from Lambert-St Louis to Montreal are usually found in May or March, booked 59 days in advance, depart on a Sunday or Wednesday and return on a Tuesday

How to find the cheapest flight from St. Louis (STL) to Montreal (YMQ)

Popular in	June
Cheapest in	May
Round-trip from	$461
One-way from	$267

High demand for flights, 15% potential price rise

Search Deals

Best time to find cheap flights, 23% potential price drop

Search Deals

From Lambert-St Louis to Montreal (YMQ)

Search Deals

One-way flight from Lambert-St Louis to Montreal (YMQ)

Search Deals

STL - YMQ Price	$461 - $704
YMQ Temperature	15.8 - 71.6 °F
YMQ Rainfall	2.5 - 4.4 inches

STL - YMQ

Price

$461 - $704

YMQ

Temperature

15.8 - 71.6 °F

YMQ

Rainfall

2.5 - 4.4 inches

Users have found that booking a flight from St. Louis to Montreal at least 59 days early can save you up to 27% on average compared to booking a flight this week. If booking 59 days before your flight isn’t an option for you, users have found flights from St. Louis to Montreal for as little as $674 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 $743 for flights departing within the next 3 days.

Cheap flights from St. Louis to Montreal in May, June 2023

These are some of the best deals we've found on flights to Montreal in 2023 at this time. Check back regularly for other flight deals.

Jun 28 - Jul 5

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

15h 40m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

5h 31m

$578

Multiple Airlines

Deal found 5/29

Jun 27 - Jul 1

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

7h 14m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

17h 28m

$599

American Airlines

Deal found 5/30

Jun 29 - Jul 1

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

7h 09m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

17h 28m

$600

American Airlines

Deal found 5/30

Jun 28 - Jul 1

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

7h 49m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

13h 48m

$605

WestJet

Deal found 5/30

Jun 28 - Jul 5

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

11h 00m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

10h 13m

$606

American Airlines

Deal found 5/29

Jun 28 - Jul 5

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

11h 00m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

11h 34m

$612

American Airlines

Deal found 5/29

Jun 29 - Jun 30

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

5h 13m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

16h 32m

$626

American Airlines

Deal found 5/30

Jun 16 - Jun 21

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

18h 44m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

11h 07m

$658

American Airlines

Deal found 5/29

Jun 16 - Jun 21

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

18h 44m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

12h 22m

$667

American Airlines

Deal found 5/29

St. Louis to Montreal 2023 flight deals

These are some of the best deals we've found on flights to Montreal in 2023 at this time. Check back regularly for other flight deals.

Sep 19 - Sep 26

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 15m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

10h 41m

$473

Delta

Deal found 5/29

Sep 19 - Sep 26

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 15m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

8h 54m

$499

Delta

Deal found 5/29

Jul 11 - Jul 18

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

12h 05m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

9h 20m

$502

Delta

Deal found 5/29

Aug 1 - Aug 8

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 37m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

9h 20m

$510

Delta

Deal found 5/29

Sep 19 - Sep 26

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

11h 11m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

10h 41m

$513

Delta

Deal found 5/29

Jul 12 - Jul 19

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

15h 11m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

15h 55m

$515

Delta

Deal found 5/29

Nov 2 - Nov 7

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 31m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

8h 54m

$516

Delta

Deal found 5/29

Jul 11 - Jul 20

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

15h 11m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

12h 25m

$518

Delta

Deal found 5/29

Nov 2 - Nov 7

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 31m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

8h 54m

$521

Delta

Deal found 5/30

Cheap Delta flights from St. Louis to Montreal

Consider these cheap Delta flights we've found departing from St. Louis to Montreal. Make sure to double check the flight details before booking.

Sep 19 - Sep 26

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 15m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

10h 41m

$473

Delta

Deal found 5/29

Sep 19 - Sep 26

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 15m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

8h 54m

$499

Delta

Deal found 5/29

Jul 11 - Jul 18

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

12h 05m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

9h 20m

$502

Delta

Deal found 5/29

Aug 1 - Aug 8

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 37m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

9h 20m

$510

Delta

Deal found 5/29

Sep 19 - Sep 26

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

11h 11m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

10h 41m

$513

Delta

Deal found 5/29

Jul 12 - Jul 19

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

15h 11m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

15h 55m

$515

Delta

Deal found 5/29

Nov 2 - Nov 7

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 31m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

8h 54m

$516

Delta

Deal found 5/29

Jul 11 - Jul 20

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

15h 11m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

12h 25m

$518

Delta

Deal found 5/29

Nov 2 - Nov 7

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 31m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

8h 54m

$521

Delta

Deal found 5/30

Cheap Air Canada flights from St. Louis to Montreal

Some of the lowest-priced Air Canada flights we've found at this time heading from St. Louis to Montreal. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

Jul 10 - Jul 16

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

4h 51m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

4h 31m

$579

Air Canada

Deal found 5/29

Jul 13 - Jul 14

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

4h 51m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

5h 01m

$589

Air Canada

Deal found 5/30

Jul 14 - Jul 21

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

13h 21m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

4h 31m

$602

Air Canada

Deal found 5/29

Last minute flights from St. Louis to Montreal

Users seeking a last-minute flight from St. Louis to Montreal should consider booking one of these fares. Users should be sure to double check the price, date, and time of their last-minute flight.

Jun 4 - Jun 11

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

8h 39m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

1 stop

6h 42m

$806

Delta

Deal found 5/29

Jun 4 - Jun 11

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

5h 13m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

8h 37m

$837

American Airlines

Deal found 5/29

Jun 4 - Jun 11

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

32h 09m

YUL

Montreal Pierre Elliott Trudeau Intl

STL

Lambert-St Louis

2 stops

29h 05m

$935

WestJet

Deal found 5/29

One-way flights to Montreal from St. Louis

Take a look at some of the best available options we've come across on one-way flights from St. Louis to Montreal. Users needing a return flight from St. Louis to Montreal should utilize the search form above.

Jun 28

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

6h 32m

$265

Delta

Deal found 5/29

Jul 1

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

4h 51m

$267

Air Canada

Deal found 5/29

Jul 21

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

1 stop

7h 58m

$275

American Airlines

Deal found 5/30

Jun 28

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

11h 00m

$277

American Airlines

Deal found 5/29

Oct 5

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

32h 18m

$326

WestJet

Deal found 5/29

Jul 22

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

12h 08m

$334

Delta

Deal found 5/30

Jul 21

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

9h 33m

$361

American Airlines

Deal found 5/30

Jul 1

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

2 stops

28h 20m

$376

American Airlines

Deal found 5/29

Jun 28

STL

Lambert-St Louis

YUL

Montreal Pierre Elliott Trudeau Intl

3 stops

18h 35m

$451

Multiple Airlines

Deal found 5/29

Find flights from St. Louis to Montreal within your budget

Fly from

Fly to

Budget

$473 - $605

Route

Depart

Return

Price

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Tue 9/19

1 stop8h 15m

Montreal Pierre Elliott Trudeau Intl

Tue 9/26

2 stops10h 41m

$473

Pick Dates

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Tue 9/19

1 stop8h 15m

Montreal Pierre Elliott Trudeau Intl

Tue 9/26

1 stop8h 54m

$499

Pick Dates

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Tue 7/11

1 stop12h 05m

Montreal Pierre Elliott Trudeau Intl

Tue 7/18

1 stop9h 20m

$502

Pick Dates

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Wed 6/28

1 stop15h 40m

Montreal Pierre Elliott Trudeau Intl

Wed 7/5

1 stop5h 31m

$578

Pick Dates

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Mon 7/10

1 stop4h 51m

Montreal Pierre Elliott Trudeau Intl

Sun 7/16

1 stop4h 31m

$579

Pick Dates

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Thu 10/19

2 stops9h 03m

Montreal Pierre Elliott Trudeau Intl

Thu 10/26

1 stop5h 42m

$588

Pick Dates

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Thu 7/13

1 stop4h 51m

Montreal Pierre Elliott Trudeau Intl

Fri 7/14

1 stop5h 01m

$589

Pick Dates

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Sat 7/22

1 stop12h 59m

Montreal Pierre Elliott Trudeau Intl

Wed 7/26

2 stops20h 22m

$592

Pick Dates

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

Wed 6/28

1 stop7h 49m

Montreal Pierre Elliott Trudeau Intl

Sat 7/1

2 stops13h 48m

$605

Pick Dates

Flights are sorted by cheapest first

Deals found on 5/29

Reviews of Airlines Servicing Montreal

Read through reviews of airlines operating flights from St. Louis to Montreal, such as Delta, Air Canada and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

2,363 reviews

Check prices

Reviews

1 / 10

Not one mishap. Surprisingly stress free especially compared how the awfulness of air travel rrce

Delta

8.0

Very good

2,363 reviews

Delta

8.0

Very good

2,363 reviews

Check prices

Reviews

1 / 10

Not one mishap. Surprisingly stress free especially compared how the awfulness of air travel rrce

United Airlines

7.6

Good

1,525 reviews

Delta

8.0

Very good

2,363 reviews

Check prices

Reviews

1 / 10

Not one mishap. Surprisingly stress free especially compared how the awfulness of air travel rrce

American Airlines

7.4

Good

2,147 reviews

Delta

8.0

Very good

2,363 reviews

Check prices

Reviews

1 / 10

Not one mishap. Surprisingly stress free especially compared how the awfulness of air travel rrce

WestJet

7.1

Good

618 reviews

Delta

8.0

Very good

2,363 reviews

Check prices

Reviews

1 / 10

Not one mishap. Surprisingly stress free especially compared how the awfulness of air travel rrce

Air Canada

6.7

Okay

929 reviews

Delta

8.0

Very good

2,363 reviews

Check prices

Reviews

1 / 10

Not one mishap. Surprisingly stress free especially compared how the awfulness of air travel rrce

Related info for your journey

Top 3 airlines flying from St. Louis to Montreal

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
Air Canada	Cheapest$238	Average$547	FlexibilityNo cancel fee	On-time67%	COVID-19 safety	Search Air Canada flights
American Airlines	Cheapest$244	Average$624	FlexibilityNo cancel fee	On-time71%	COVID-19 safety	Search American Airlines flights
Delta	Cheapest$440	Average$663	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Delta flights

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Cheap flights from St. Louis (STL) to Montreal (YMQ) from $265

This is the cheapest one-way flight price, found on 5/29. Prices may vary by date and flight preferences.

The best prices from Lambert-St Louis to Montreal are usually found in May or March, booked 59 days in advance, depart on a Sunday or Wednesday and return on a Tuesday

How to find the cheapest flight from St. Louis (STL) to Montreal (YMQ)

All the information you need to plan the best STL to YMQ flight in 2023: compare St. Louis to Montreal flight prices with the expected peak season, weather and rainfall in Montreal.

Popular in

Cheapest in

Round-trip from

One-way from

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

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

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

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

Cheap flights from St. Louis to Montreal in May, June 2023

The best prices found for STL to YMQ flights for May, June

These are some of the best deals we've found on flights to Montreal in 2023 at this time. Check back regularly for other flight deals.

St. Louis to Montreal 2023 flight deals

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

These are some of the best deals we've found on flights to Montreal in 2023 at this time. Check back regularly for other flight deals.

Cheap Delta flights from St. Louis to Montreal

Consider these cheap Delta flights we've found departing from St. Louis to Montreal. Make sure to double check the flight details before booking.

Cheap Air Canada flights from St. Louis to Montreal

Some of the lowest-priced Air Canada flights we've found at this time heading from St. Louis to Montreal. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

Last minute flights from St. Louis to Montreal

Late deals on return flights to Montreal from St. Louis, departing today and this week

Users seeking a last-minute flight from St. Louis to Montreal should consider booking one of these fares. Users should be sure to double check the price, date, and time of their last-minute flight.

One-way flights to Montreal from St. Louis

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

Take a look at some of the best available options we've come across on one-way flights from St. Louis to Montreal. Users needing a return flight from St. Louis to Montreal should utilize the search form above.

Find flights from St. Louis to Montreal within your budget

Use the slider to find flights from St. Louis to Montreal that fit your budget.

Reviews of Airlines Servicing Montreal

Read through reviews of airlines operating flights from St. Louis to Montreal, such as Delta, Air Canada and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Useful info, stats and facts about St. Louis to Montreal flights.

What airport do you fly from for flights from St. Louis to Montreal?

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

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

Are there last-minute flights available from St. Louis to Montreal for under $900?

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

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

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

What does STL to YUL mean?

Other flights from St. Louis

Flights to Montreal from St. Louis

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Top 3 airlines flying from St. Louis to Montreal

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

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