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Cheap flights from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport from C$ 211

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 24/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YUL
22 Jan — 29 Jan1
1 adult

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

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Pierre Elliott Trudeau Intl (YUL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 17 January 2025.

Round-trip from

C$ 538

One-way from

C$ 211

Popular in

February

Cheapest in

April

Average price

C$ 979
29/1-1/2
  • 29/1-1/2
  • 2 total stops
  • 41h 43m total
  • St. Louis to Montreal
24/2
  • 24/2
  • 1 total stop
  • 16h 27m total
  • St. Louis to Montreal
High demand for flights, 8% potential price rise
Best time to find cheap flights, 3% potential price drop
Average for round-trip flights in January 2025

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 17 January 2025.

Wed 29/15:05 p.m.STL - YUL
1 stop20h 35mMultiple Airlines
Sat 1/26:35 p.m.YUL - STL
1 stop21h 08mMultiple Airlines
Deal found 16/1C$ 538
Sat 15/21:35 p.m.STL - YUL
1 stop19h 51mDelta
Tue 18/26:00 a.m.YUL - STL
1 stop16h 02mDelta
Deal found 16/1C$ 729
Mon 3/26:43 a.m.STL - YUL
1 stop4h 16mWestJet
Mon 10/26:03 p.m.YUL - STL
1 stop6h 34mWestJet
Deal found 16/1C$ 839
Mon 3/25:23 a.m.STL - YUL
2 stops10h 27mAmerican Airlines
Mon 10/27:14 a.m.YUL - STL
1 stop7h 07mAmerican Airlines
Deal found 16/1C$ 901
Wed 29/19:44 a.m.STL - YUL
2 stops21h 16mUnited Airlines
Sat 1/26:10 p.m.YUL - STL
2 stops17h 44mUnited Airlines
Deal found 16/1C$ 1,052
Fri 14/23:50 p.m.STL - YUL
1 stop6h 58mAir Canada
Mon 17/28:50 a.m.YUL - STL
2 stops7h 50mAir Canada
Deal found 16/1C$ 1,064

Find flights from St. Louis to Pierre Elliott Trudeau Intl within your budget

Customize your flight search to find flights from St. Louis to Pierre Elliott Trudeau Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 17 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 29/1

5:05 p.m.-2:40 p.m.

1 stop20h 35m

Montreal Pierre Elliott Trudeau Intl

Sat 1/2

6:35 p.m.-2:43 p.m.

1 stop21h 08m

C$ 538

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 15/2

1:35 p.m.-10:26 a.m.

1 stop19h 51m

Montreal Pierre Elliott Trudeau Intl

Tue 18/2

6:00 a.m.-9:02 p.m.

1 stop16h 02m

C$ 729

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 3/2

6:43 a.m.-11:59 a.m.

1 stop4h 16m

Montreal Pierre Elliott Trudeau Intl

Mon 10/2

6:03 p.m.-11:37 p.m.

1 stop6h 34m

C$ 839

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 3/2

5:23 a.m.-4:50 p.m.

2 stops10h 27m

Montreal Pierre Elliott Trudeau Intl

Mon 10/2

7:14 a.m.-1:21 p.m.

1 stop7h 07m

C$ 901

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 29/1

9:44 a.m.-8:00 a.m.

2 stops21h 16m

Montreal Pierre Elliott Trudeau Intl

Sat 1/2

6:10 p.m.-10:54 a.m.

2 stops17h 44m

C$ 1,052

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 14/2

3:50 p.m.-11:48 p.m.

1 stop6h 58m

Montreal Pierre Elliott Trudeau Intl

Mon 17/2

8:50 a.m.-3:40 p.m.

2 stops7h 50m

C$ 1,064

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 24/2

11:08 p.m.-4:35 p.m.

1 stop16h 27m

C$ 211

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 14/3

5:10 p.m.-10:10 a.m.

1 stop16h 00m

C$ 441

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 22/4

5:35 p.m.-10:36 a.m.

1 stop16h 01m

C$ 668

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/1

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.

Travel insights for flights from St. Louis to Pierre Elliott Trudeau Intl

Get recent, data-driven insights about flights from St. Louis to Pierre Elliott Trudeau Intl including ideal travel times, pricing trends, and more.

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

Currently, October is the cheapest month in which you can book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport in March is currently the most expensive (average of C$ 345). 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.

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.

In terms of precipitation, rainfall in Montreal Pierre Elliott Trudeau Intl Airport ranges from 64.0 - 111.0 mm per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Montreal Pierre Elliott Trudeau Intl Airport when rainfall is around 64.0 mm.

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.

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 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Get insights into the airlines that provide service to Pierre Elliott Trudeau Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pierre Elliott Trudeau Intl. Reviews last updated 17 January 2025.
Read reviews from past customers who have flown WestJet and American Airlines from St. Louis to Montreal. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good
8,511 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

8.0
Very good
8,511 reviews
8.0
Very good
8,511 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

7.4
Good
8,964 reviews
8.0
Very good
8,511 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

7.2
Good
10,000 reviews
8.0
Very good
8,511 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

7.2
Good
2,824 reviews
8.0
Very good
8,511 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

7.0
Good
8,587 reviews
8.0
Very good
8,511 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

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

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?

    For a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 20.4 km from the centre of the city. Lambert-St Louis is the only St. Louis airport and it handles 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day. 0 airlines have flights to Montreal Pierre Elliott Trudeau Intl from Lambert-St Louis on a regular basis.

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

    Our cheapest airline available from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport is Delta. Our recent data shows that you can find tickets from as low as C$ 729 on this airline. Additional options worth looking into are WestJet and American Airlines, starting at C$ 839 and C$ 901 round-trip. Delta is currently priced 17% below the average price you’ll pay for this route.

  • 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, October is the cheapest month in which you can book a flight from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from St. Louis to Montreal Pierre Elliott Trudeau Intl Airport in March is currently the most expensive (average of C$ 345). 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

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Laval
Dorval
Brossard
Trois-Rivières
Cornwall
Longueuil
Montebello
Saint-Jean-sur-Richelieu
Sherbrooke
Bromont
Saint-Sauveur

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Alternative routes for St. Louis to Pierre Elliott Trudeau Intl

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Yes! Start tracking prices for St. Louis to Pierre Elliott Trudeau Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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