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Cheap flights from Montreal to St. Louis from C$ 573

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 30/11. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — STL
26 Nov — 3 Dec1
1 adult

Cheap flight deals from Montreal to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to St. Louis (STL). 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 21 November 2024.

Round-trip from

C$ 686

One-way from

C$ 573

Popular in

September

Cheapest in

January
United Airlines
  • United Airlines
  • 22/2-10/3
  • 3 total stops
  • 27h 16m total
  • Montreal to St. Louis
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30/11
  • 30/11
  • 1 total stop
  • 25h 31m total
  • Montreal to St. Louis
Search Deals
High demand for flights, 16% potential price rise
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Best time to find cheap flights, 21% potential price drop
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Find flight deals from Montreal to St. Louis

Cheapest flights from Montreal to St. Louis
Explore the most affordable flight options available from Montreal to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 November 2024.

Tue 24/121:25 p.m.YUL - STL
2 stops9h 20mUnited Airlines
Thu 2/11:11 p.m.STL - YUL
1 stop7h 31mUnited Airlines
Deal found 21/11C$ 776
Fri 20/122:29 p.m.YUL - STL
1 stop8h 24mAmerican Airlines
Mon 23/127:30 a.m.STL - YUL
1 stop14h 20mAmerican Airlines
Deal found 21/11C$ 920
Fri 20/126:15 a.m.YUL - STL
1 stop18h 25mMultiple Airlines
Mon 23/126:49 p.m.STL - YUL
2 stops20h 46mMultiple Airlines
Deal found 21/11C$ 1,046

Find flights from Montreal to St. Louis within your budget

Customize your flight search to find flights from Montreal to St. Louis 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 640,016 searches. Data last updated 21 November 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 22/2

7:00 a.m.-9:46 p.m.

2 stops15h 46m

Lambert-St Louis

Mon 10/3

1:05 p.m.-7:45 a.m.

2 stops17h 40m

C$ 686

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 9/1

5:15 p.m.-12:32 p.m.

1 stop20h 17m

Lambert-St Louis

Mon 13/1

6:05 a.m.-9:06 p.m.

1 stop14h 01m

C$ 705

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 9/1

2:20 p.m.-7:23 p.m.

1 stop6h 03m

Lambert-St Louis

Mon 13/1

6:00 a.m.-4:50 p.m.

2 stops9h 50m

C$ 739

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 22/2

1:10 p.m.-9:46 p.m.

1 stop9h 36m

Lambert-St Louis

Mon 10/3

3:50 p.m.-7:55 a.m.

1 stop15h 05m

C$ 742

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 20/12

6:15 a.m.-11:40 p.m.

1 stop18h 25m

Lambert-St Louis

Mon 23/12

6:49 p.m.-4:35 p.m.

2 stops20h 46m

C$ 1,046

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 30/11

3:55 p.m.-4:26 p.m.

1 stop25h 31m

C$ 573

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 30/11

6:45 a.m.-4:29 p.m.

2 stops10h 44m

C$ 673

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/11

Best time to book a flight from Montreal to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Montreal 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 Montreal to St. Louis

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

What is the cheapest month to book a flight from Montreal to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Montreal to St. Louis (average of C$ 365). Flying from Montreal to St. Louis in September is currently the most expensive (average of C$ 491). 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 YMQ to STL?

Find hourly flight availability from Montreal to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 November 2024.

Unlike at noon, when flights are generally more expensive, you can save up to 9% on flights from Montreal to St. Louis by exploring options for tickets in the morning.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated 21 November 2024.
To help decide which airline to fly from Montreal to St. Louis, see what other customers have to say about Delta and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,755 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,755 reviews
Delta
8.0
Very good
8,755 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
9,172 reviews
Delta
8.0
Very good
8,755 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet
7.3
Good
2,811 reviews
Delta
8.0
Very good
8,755 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,755 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada
7.0
Good
8,246 reviews
Delta
8.0
Very good
8,755 reviews
Check prices

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Montreal to St. Louis. 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 into for flights to St. Louis from Montreal?

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Montreal. On average, Lambert-St Louis has 0 inbound flights from Montreal per day from 3 airlines. Lambert-St Louis is conveniently located just 20.4 km from St. Louis’s city centre.

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

    Currently priced at C$ 686, United Airlines will fly you from Montreal to St. Louis and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and American Airlines - these airlines can fly you to your destination from C$ 705 and C$ 739, respectively.

  • What are the most reliable airlines from Montreal to St. Louis?

    Before booking your flight to St. Louis from Montreal, check out the most reliable airlines to get you to your destination on time: Air Canada (54%), Jazz (54%), United Airlines( 54%).

  • What are the cheapest flights from Montreal to St. Louis?

    Looking at all options, your cheapest flight can be booked for C$ 723. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) can be booked for C$ 465 on average our data indicates C$ 847 when flying from Montreal to St. Louis.

  • Can I find deals for flights from Montreal to St. Louis that include hotel bookings?

    Yes. In addition to deals on Montreal to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montreal to St. Louis?

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

  • Can I find deals for business class flights from Montreal to St. Louis?

    Yes. Cheapflights offers flight deals from Montreal to St. Louis 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 Montreal to St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Montreal to St. Louis (average of C$ 365). Flying from Montreal to St. Louis in September is currently the most expensive (average of C$ 491). 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

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Top 3 airlines flying from Montreal to St. Louis

Discover the top 3 airlines that operate flights from Montreal to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 640,016 searches. Data last updated 21 November 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 289AverageC$ 857FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 468AverageC$ 713FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 615AverageC$ 869FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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Certainly. Search results for flights to St. Louis from Montreal shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Montreal to St. Louis become cheaper?

Not ready to book yet? You can track prices for flights from Montreal to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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