What are the cheapest airlines to fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport one-way?

For one-way options, check prices for Delta. According to our data, you can fly for as low as $244. Users have also found prices from $296 and $301 on American Airlines and WestJet, respectively.

What is the cheapest day to fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

Travelers seeking maximum savings on their St. Louis to Montreal Pierre Elliott Trudeau Intl Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

The most popular airlines flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport are American Airlines, Air Canada and Delta. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Montreal Pierre Elliott Trudeau Intl Airport. Check prices with Cheapflights to find a great deal for your trip.

What is the cheapest month to fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

Our data shows that November tends to be the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport from St. Louis. Users have commonly found prices around $619 for the month, but tickets can be as low as $464. Due to multiple factors, prepare for potentially higher prices in February.

Most accurate provider : When it comes to deals on St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from St. Louis to Montreal Pierre Elliott Trudeau Intl?

Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl. On average, Lambert-St Louis has 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day from 5 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

How can I find direct flights from St. Louis to Pierre Elliott Trudeau Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Pierre Elliott Trudeau Intl.

Can I find deals for business class flights from St. Louis to Pierre Elliott Trudeau Intl?

Yes. Cheapflights offers flight deals from St. Louis to Pierre Elliott Trudeau Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$227+ Flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

Q: How far in advance should I book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

Users have found that booking a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport at least 28 days early can save you up to 222% on average compared to booking a flight this week. If booking 28 days before your flight isn’t an option for you, users have found flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport for as little as $475 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 $800 for flights departing within the next 3 days.

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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3. Compare prices and book

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Cheap flight deals from St. Louis to Pierre Elliott Trudeau Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$452 (Delta)
One-way from	$227 (Kiwi.com)
Popular in	March
Cheapest in	May
Average price	$620
Good round-trip deal	$888 or less
Good one-way deal	$487 or less

Provider with most accurate pricing for Lambert-St Louis-Montreal Pierre Elliott Trudeau Intl flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Montreal Pierre Elliott Trudeau Intl flights.

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From Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl

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One-way flight from Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl

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Highest demand for flights based on searches. 18% potential increase in price ($143 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl.

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Price to beat on a one-way flight from Lambert-St Louis to Montreal Pierre Elliott Trudeau Intl.

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Find flight deals from St. Louis to Pierre Elliott Trudeau Intl

Cheapest flights from St. Louis to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from St. Louis to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Thu 5/296:45 pmSTL - YUL

1 stop25h 24mDelta

Mon 6/26:05 amYUL - STL

1 stop15h 43mDelta

Deal found 4/28

$452

Thu 6/126:12 pmSTL - YUL

3 stops29h 25mMultiple Airlines

Sun 6/156:45 amYUL - STL

2 stops28h 48mMultiple Airlines

Deal found 4/27

$474

Thu 5/295:00 amSTL - YUL

1 stop4h 40mAir Canada

Mon 6/26:10 pmYUL - STL

Nonstop2h 48mAir Canada

Deal found 4/28

$506

Tue 5/136:00 pmSTL - YUL

1 stop14h 50mAmerican Airlines

Tue 5/2010:44 amYUL - STL

1 stop9h 31mAmerican Airlines

Deal found 4/28

$552

Fri 8/158:15 amSTL - YUL

1 stop26h 25mUnited Airlines

Mon 8/184:40 pmYUL - STL

2 stops18h 22mUnited Airlines

Deal found 4/28

$634

Mon 10/135:45 pmSTL - YUL

1 stop4h 23mWestJet

Sun 10/196:00 amYUL - STL

1 stop4h 35mWestJet

Deal found 4/28

$721

Best flights from St. Louis to Pierre Elliott Trudeau Intl
Discover carefully curated flight deals from St. Louis to Pierre Elliott Trudeau Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2025.

Thu 5/296:45 pmSTL - YUL

1 stop25h 24mDelta

Mon 6/26:05 amYUL - STL

1 stop15h 43mDelta

Deal found 4/28

$452

Thu 6/126:12 pmSTL - YUL

3 stops29h 25mMultiple Airlines

Sun 6/156:45 amYUL - STL

2 stops28h 48mMultiple Airlines

Deal found 4/27

$474

Thu 5/295:00 amSTL - YUL

1 stop4h 40mAir Canada

Mon 6/26:10 pmYUL - STL

Nonstop2h 48mAir Canada

Deal found 4/28

$506

Tue 5/136:00 pmSTL - YUL

1 stop14h 50mAmerican Airlines

Tue 5/2010:44 amYUL - STL

1 stop9h 31mAmerican Airlines

Deal found 4/28

$552

Fri 8/158:15 amSTL - YUL

1 stop26h 25mUnited Airlines

Mon 8/184:40 pmYUL - STL

2 stops18h 22mUnited Airlines

Deal found 4/28

$634

Mon 10/135:45 pmSTL - YUL

1 stop4h 23mWestJet

Sun 10/196:00 amYUL - STL

1 stop4h 35mWestJet

Deal found 4/28

$721

Last-minute flights from St. Louis to Pierre Elliott Trudeau Intl
Discover last-minute flight deals from St. Louis to Pierre Elliott Trudeau Intl. Data last updated April 29, 2025 and is based on user searches.

Mon 5/56:00 pmSTL - YUL

1 stop14h 50mAmerican Airlines

Wed 5/710:44 amYUL - STL

1 stop9h 31mAmerican Airlines

Deal found 4/28

$736

Mon 5/59:40 amSTL - YUL

2 stops11h 10mUnited Airlines

Wed 5/74:40 pmYUL - STL

2 stops24h 07mUnited Airlines

Deal found 4/28

$826

Fri 5/95:55 pmSTL - YUL

1 stop19h 25mMultiple Airlines

Sun 5/116:45 amYUL - STL

2 stops18h 21mMultiple Airlines

Deal found 4/28

$549

Fri 5/91:30 pmSTL - YUL

Nonstop2h 30mAir Canada

Sun 5/116:10 pmYUL - STL

Nonstop2h 48mAir Canada

Deal found 4/28

$1,112

Tue 5/136:00 pmSTL - YUL

1 stop14h 50mAmerican Airlines

Tue 5/2010:44 amYUL - STL

1 stop9h 31mAmerican Airlines

Deal found 4/28

$552

Mon 5/263:40 pmSTL - YUL

2 stops7h 57mWestJet

Mon 6/26:45 amYUL - STL

2 stops7h 34mWestJet

Deal found 4/28

$1,489

Thu 5/296:45 pmSTL - YUL

1 stop25h 24mDelta

Mon 6/26:05 amYUL - STL

1 stop15h 43mDelta

Deal found 4/28

$452

Thu 5/291:00 pmSTL - YUL

3 stops10h 41mMultiple Airlines

Mon 6/28:00 amYUL - STL

3 stops28h 45mMultiple Airlines

Deal found 4/28

$478

Thu 5/295:00 amSTL - YUL

1 stop4h 40mAir Canada

Mon 6/26:10 pmYUL - STL

Nonstop2h 48mAir Canada

Deal found 4/28

$506

Thu 5/295:00 amSTL - YUL

1 stop4h 40mUnited Airlines

Thu 6/56:10 pmYUL - STL

Nonstop2h 48mUnited Airlines

Deal found 4/29

$636

One-way flights from St. Louis to Pierre Elliott Trudeau Intl
Search for one-way flight options from St. Louis to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated April 29, 2025.

Thu 9/47:37 pmSTL - YUL

1 stop18h 13mMultiple Airlines

Deal found 4/29

$227

Tue 10/146:00 amSTL - YUL

1 stop9h 06mDelta

Deal found 4/28

$244

Sat 9/136:00 amSTL - YUL

1 stop9h 40mAmerican Airlines

Deal found 4/29

$296

Thu 6/128:49 amSTL - YUL

2 stops21h 19mWestJet

Deal found 4/28

$301

Fri 9/51:30 pmSTL - YUL

Nonstop2h 30mUnited Airlines

Deal found 4/28

$335

Thu 9/41:30 pmSTL - YUL

Nonstop2h 30mAir Canada

Deal found 4/29

$357

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 5/29

6:45 pm-9:09 pm

1 stop25h 24m

Montreal Pierre Elliott Trudeau Intl

Mon 6/2

6:05 am-8:48 pm

1 stop15h 43m

$452

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 6/12

6:12 pm-12:37 am

3 stops29h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 6/15

6:45 am-10:33 am

2 stops28h 48m

$474

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 5/29

5:00 am-10:40 am

1 stop4h 40m

Montreal Pierre Elliott Trudeau Intl

Mon 6/2

6:10 pm-7:58 pm

Nonstop2h 48m

$506

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 5/13

6:00 pm-9:50 am

1 stop14h 50m

Montreal Pierre Elliott Trudeau Intl

Tue 5/20

10:44 am-7:15 pm

1 stop9h 31m

$552

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 8/15

8:15 am-11:40 am

1 stop26h 25m

Montreal Pierre Elliott Trudeau Intl

Mon 8/18

4:40 pm-10:02 am

2 stops18h 22m

$634

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 10/13

5:45 pm-11:08 pm

1 stop4h 23m

Montreal Pierre Elliott Trudeau Intl

Sun 10/19

6:00 am-9:35 am

1 stop4h 35m

$721

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 9/4

7:37 pm-2:50 pm

1 stop18h 13m

$227

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 10/14

6:00 am-4:06 pm

1 stop9h 06m

$244

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 9/13

6:00 am-4:40 pm

1 stop9h 40m

$296

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 6/12

8:49 am-7:08 am

2 stops21h 19m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 12 results

Compare providers for flights from St. Louis to Pierre Elliott Trudeau Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Pierre Elliott Trudeau Intl in April.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Expedia	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Montreal Pierre Elliott Trudeau Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

What is the cheapest month to book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to YUL?

It’s typically best to fly out from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport in the evening. Doing so could potentially save you 77% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Pierre Elliott Trudeau Intl by month

In terms of precipitation, rainfall in Montreal Pierre Elliott Trudeau Intl Airport ranges from 2.5 - 4.4 inches per month. August is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Montreal Pierre Elliott Trudeau Intl Airport when rainfall is around 2.5 in.

Temperature in Pierre Elliott Trudeau Intl by month

If weather is an important factor for your trip to Montreal Pierre Elliott Trudeau Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read through reviews of airlines operating flights from St. Louis to Montreal, such as Delta, United Airlines and American Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,929 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

WestJet

7.2

Good

2,823 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada

7.0

Good

9,242 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from St. Louis to Montreal Pierre Elliott Trudeau Intl?
Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl. On average, Lambert-St Louis has 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day from 5 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.
What are the cheapest airlines flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport round-trip?
Currently priced at $452, Delta will fly you from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and American Airlines - these airlines can fly you to your destination from $506 and $552, respectively. Delta is 30% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport one-way?
For one-way options, check prices for Delta. According to our data, you can fly for as low as $244. Users have also found prices from $296 and $301 on American Airlines and WestJet, respectively.
What are the cheapest flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?
The cheapest flight price from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport is $199. On average you can expect to pay $1,466. The most popular route, (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl), can usually be booked for $439.
Can I find deals for flights from St. Louis to Pierre Elliott Trudeau Intl that include hotel bookings?
Yes. In addition to deals on St. Louis to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Pierre Elliott Trudeau Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Pierre Elliott Trudeau Intl.
Can I find deals for business class flights from St. Louis to Pierre Elliott Trudeau Intl?
Yes. Cheapflights offers flight deals from St. Louis to Pierre Elliott Trudeau Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Laval

Dorval

Brossard

Longueuil

Sherbrooke

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Top 5 airlines flying from St. Louis to Pierre Elliott Trudeau Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$246	Average$598	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$259	Average$613	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$330	Average$736	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$472	Average$660	FlexibilityNo cancel fee	On-timeN/A
WestJet	Cheapest$577	Average$645	FlexibilityNo cancel fee	On-time60%

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$227+ Cheap flights from St. Louis (STL) to Pierre Elliott Trudeau Intl (YUL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Pierre Elliott Trudeau Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Pierre Elliott Trudeau Intl

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Most trusted provider

Round-trip from

One-way from

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Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from St. Louis to Pierre Elliott Trudeau Intl

Cheapest flights from St. Louis to Pierre Elliott Trudeau IntlExplore the most affordable flight options available from St. Louis to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Explore the most affordable flight options available from St. Louis to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Compare providers for flights from St. Louis to Pierre Elliott Trudeau Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Pierre Elliott Trudeau Intl in April.

Best time to book a flight from St. Louis to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport

What is the cheapest month to book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

What is the cheapest time of day to fly from STL to YUL?

Find hourly flight availability from St. Louis to Pierre Elliott Trudeau Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

Rainfall in Pierre Elliott Trudeau Intl by month

Plan your trip to Pierre Elliott Trudeau Intl by taking into account the average rainfall totals by month.

Temperature in Pierre Elliott Trudeau Intl by month

Plan your trip to Pierre Elliott Trudeau Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read through reviews of airlines operating flights from St. Louis to Montreal, such as Delta, United Airlines and American Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Pierre Elliott Trudeau Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from St. Louis to Montreal Pierre Elliott Trudeau Intl?

What are the cheapest airlines flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport round-trip?

What are the cheapest airlines to fly from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport one-way?

What are the cheapest flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

Can I find deals for flights from St. Louis to Pierre Elliott Trudeau Intl that include hotel bookings?

How can I find direct flights from St. Louis to Pierre Elliott Trudeau Intl?

Can I find deals for business class flights from St. Louis to Pierre Elliott Trudeau Intl?

What is the cheapest month to book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport?

Traveling to a place near St. Louis?

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Alternative routes for St. Louis to Pierre Elliott Trudeau Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to Pierre Elliott Trudeau Intl

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Cheapest flights from St. Louis to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from St. Louis to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.