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Cheap flights from St. Louis (STL) to Montreal (YMQ) from $159

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 6/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — YMQ
jun. 11 — jun. 181
From?
To?
mar. 6/11
mar. 6/18
1 adult, Economy
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The best prices from Lambert-St Louis to Montreal are usually found in February or January, booked 83 days in advance, depart on a Saturday or Wednesday and return on a Friday

Cheap flight deals from St. Louis to Montreal

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Montreal (YMQ). 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 junio 6, 2024.

Popular in

August

Cheapest in

February

Average price

$605

Round-trip from

$276
High demand for flights, 18% potential price rise
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Best time to find cheap flights, 36% potential price drop
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Average for round-trip flights in June 2024
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From Lambert-St Louis to Montreal (YMQ)
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What is the cheapest day to fly round-trip from St. Louis to Montreal?

Leaving on a Friday 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 31% on the overall cost on flights from St. Louis to Montreal.

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

Users have found that booking a flight from St. Louis to Montreal at least 53 days early can save you up to 191% on average compared to booking a flight this week. If booking 53 days before your flight isn’t an option for you, users have found flights from St. Louis to Montreal for as little as $392 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 $756 for flights departing within the next 3 days.

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

Flights from St. Louis to Montreal lean towards being more expensive in August. Prices are generally better when you fly from St. Louis to Montreal in February, with the cheapest ticket starting at $219.

What is the cheapest time of day to fly from STL to 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 6% on your trip compared to booking a flight at noon.

Cheap St. Louis to Montreal flights in June & July 2024

Find cheap flight options from St. Louis to Montreal specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on junio 6, 2024.
These are some of the best deals we've found on flights to Montreal in 2024 at this time. Check back regularly for other flight deals.
mar. 6/1811:57 amSTL - YUL
3 stops24h 48mMultiple Airlines
dom. 6/238:00 amYUL - STL
1 stop10h 25mMultiple Airlines
Deal found 6/4$393
mar. 6/1811:57 amSTL - YUL
3 stops24h 48mMultiple Airlines
dom. 6/2310:40 amYUL - STL
3 stops25h 50mMultiple Airlines
Deal found 6/4$395
mié. 7/1012:00 pmSTL - YUL
3 stops33h 50mMultiple Airlines
mar. 7/1610:45 amYUL - STL
3 stops25h 45mMultiple Airlines
Deal found 6/5$406
vie. 7/124:45 pmSTL - YUL
3 stops20h 50mMultiple Airlines
mar. 7/1612:50 pmYUL - STL
3 stops23h 40mMultiple Airlines
Deal found 6/5$428
jue. 7/116:19 pmSTL - YUL
3 stops27h 31mMultiple Airlines
lun. 7/1510:45 amYUL - STL
3 stops23h 41mMultiple Airlines
Deal found 6/5$430
jue. 7/185:00 pmSTL - YUL
3 stops28h 50mMultiple Airlines
dom. 7/2110:40 amYUL - STL
3 stops21h 25mMultiple Airlines
Deal found 6/5$434
sáb. 7/276:09 pmSTL - YUL
1 stop16h 44mAmerican Airlines
mar. 7/3012:35 pmYUL - STL
1 stop10h 19mAmerican Airlines
Deal found 6/5$460
mar. 6/187:29 pmSTL - YUL
2 stops17h 16mMultiple Airlines
dom. 6/238:00 amYUL - STL
1 stop10h 25mMultiple Airlines
Deal found 6/4$469
vie. 7/124:45 pmSTL - YUL
3 stops20h 50mMultiple Airlines
dom. 7/144:10 pmYUL - STL
3 stops25h 35mMultiple Airlines
Deal found 6/5$478

St. Louis to Montreal 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Montreal in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated junio 6, 2024.
These are some of the best deals we've found on flights to Montreal in 2024 at this time. Check back regularly for other flight deals.
mar. 6/1811:57 amSTL - YUL
3 stops24h 48mMultiple Airlines
dom. 6/238:00 amYUL - STL
1 stop10h 25mMultiple Airlines
Deal found 6/4$393
mar. 6/1811:57 amSTL - YUL
3 stops24h 48mMultiple Airlines
dom. 6/2310:40 amYUL - STL
3 stops25h 50mMultiple Airlines
Deal found 6/4$395
mié. 7/1012:00 pmSTL - YUL
3 stops33h 50mMultiple Airlines
mar. 7/1610:45 amYUL - STL
3 stops25h 45mMultiple Airlines
Deal found 6/5$406
vie. 7/124:45 pmSTL - YUL
3 stops20h 50mMultiple Airlines
mar. 7/1612:50 pmYUL - STL
3 stops23h 40mMultiple Airlines
Deal found 6/5$428
jue. 7/116:19 pmSTL - YUL
3 stops27h 31mMultiple Airlines
lun. 7/1510:45 amYUL - STL
3 stops23h 41mMultiple Airlines
Deal found 6/5$430
jue. 7/185:00 pmSTL - YUL
3 stops28h 50mMultiple Airlines
dom. 7/2110:40 amYUL - STL
3 stops21h 25mMultiple Airlines
Deal found 6/5$434
mar. 9/312:59 pmSTL - YUL
1 stop9h 11mDelta
sáb. 9/76:14 amYUL - STL
2 stops11h 23mDelta
Deal found 6/6$451
sáb. 7/276:09 pmSTL - YUL
1 stop16h 44mAmerican Airlines
mar. 7/3012:35 pmYUL - STL
1 stop10h 19mAmerican Airlines
Deal found 6/5$460
dom. 9/14:22 pmSTL - YUL
1 stop18h 37mAmerican Airlines
sáb. 9/712:30 pmYUL - STL
1 stop10h 39mAmerican Airlines
Deal found 6/4$461

St. Louis to Montreal flights leaving soon

Find last-minute flight options from St. Louis to Montreal for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated junio 6, 2024.
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.
sáb. 6/1512:45 pmSTL - YUL
3 stops24h 35mMultiple Airlines
mar. 6/186:50 amYUL - STL
2 stops31h 15mMultiple Airlines
Deal found 6/5$513
sáb. 6/156:22 pmSTL - YUL
2 stops18h 58mMultiple Airlines
mar. 6/186:50 amYUL - STL
2 stops31h 15mMultiple Airlines
Deal found 6/5$545
sáb. 6/1511:34 amSTL - YUL
2 stops19h 41mMultiple Airlines
mar. 6/186:50 amYUL - STL
1 stop8h 33mMultiple Airlines
Deal found 6/5$547
sáb. 6/1512:45 pmSTL - YUL
3 stops24h 35mMultiple Airlines
mar. 6/186:50 amYUL - STL
3 stops31h 15mMultiple Airlines
Deal found 6/5$548
sáb. 6/156:22 pmSTL - YUL
1 stop19h 38mMultiple Airlines
mar. 6/186:50 amYUL - STL
1 stop8h 33mMultiple Airlines
Deal found 6/5$582
sáb. 6/157:15 amSTL - YUL
1 stop9h 27mDelta
mar. 6/187:00 amYUL - STL
1 stop8h 30mDelta
Deal found 6/5$747
sáb. 6/157:15 amSTL - YUL
1 stop9h 27mDelta
mar. 6/187:00 amYUL - STL
2 stops11h 20mDelta
Deal found 6/5$786
sáb. 6/155:25 pmSTL - YUL
1 stop5h 29mWestJet
mar. 6/1812:46 pmYUL - STL
1 stop7h 33mWestJet
Deal found 6/6$806
dom. 6/164:02 pmSTL - YUL
1 stop6h 52mDelta
mar. 6/186:14 amYUL - STL
2 stops12h 06mDelta
Deal found 6/5$808

One-way flights to Montreal from St. Louis

Search for one-way flight options from St. Louis to Montreal. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated junio 6, 2024.
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.
lun. 6/246:16 pmSTL - YUL
1 stop19h 04mMultiple Airlines
Deal found 6/5$159
sáb. 6/1511:34 amSTL - YUL
1 stop25h 46mMultiple Airlines
Deal found 6/5$172
lun. 6/242:00 pmSTL - YUL
3 stops31h 50mMultiple Airlines
Deal found 6/5$191
vie. 7/56:04 amSTL - YUL
1 stop9h 36mAmerican Airlines
Deal found 6/5$195
jue. 9/196:00 amSTL - YUL
1 stop9h 36mAmerican Airlines
Deal found 6/5$211
sáb. 6/1511:34 amSTL - YUL
2 stops19h 41mMultiple Airlines
Deal found 6/5$237
dom. 7/284:45 pmSTL - YUL
3 stops20h 00mMultiple Airlines
Deal found 6/5$241
vie. 7/53:10 pmSTL - YUL
2 stops18h 01mUnited Airlines
Deal found 6/5$245
dom. 7/287:31 pmSTL - YUL
1 stop17h 49mMultiple Airlines
Deal found 6/5$254

Find flights from St. Louis to Montreal within your budget

Customize your flight search to find flights from St. Louis to Montreal 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 3,050,429 searches. Data last updated junio 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$393 - $559

Route

Depart

Return

Price

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

mar. 6/18

3 stops24h 48m

Montreal Pierre Elliott Trudeau Intl

dom. 6/23

1 stop10h 25m

$393

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

mar. 6/18

3 stops24h 48m

Montreal Pierre Elliott Trudeau Intl

dom. 6/23

3 stops25h 50m

$395

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

mié. 7/10

3 stops33h 50m

Montreal Pierre Elliott Trudeau Intl

mar. 7/16

3 stops25h 45m

$406

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

mar. 9/3

1 stop9h 11m

Montreal Pierre Elliott Trudeau Intl

sáb. 9/7

2 stops11h 06m

$451

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

sáb. 7/27

1 stop16h 44m

Montreal Pierre Elliott Trudeau Intl

mar. 7/30

1 stop10h 19m

$460

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

dom. 9/1

1 stop18h 37m

Montreal Pierre Elliott Trudeau Intl

sáb. 9/7

1 stop10h 39m

$461

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

lun. 9/9

1 stop8h 57m

Montreal Pierre Elliott Trudeau Intl

mar. 9/17

2 stops11h 14m

$490

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

sáb. 7/13

Nonstop2h 23m

Montreal Pierre Elliott Trudeau Intl

mar. 7/16

1 stop6h 31m

$551

Lambert-St LouisMontreal Pierre Elliott Trudeau Intl

STL - YUL

STLYUL

Lambert-St Louis

vie. 7/5

1 stop9h 04m

Montreal Pierre Elliott Trudeau Intl

mar. 7/9

Nonstop2h 35m

$559

Flights are sorted by cheapest first

Deals found on 6/4

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Montreal. Price data was last updated on May 31, 2024.
The best time to book flights from St. Louis to Montreal is 83 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Montreal. Price data was last updated on June 2, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Montreal flight should consider departing on Saturday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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

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

Temperature and rainfall in Montreal by month

Plan your trip to Montreal by taking into account the average temperature and rainfall totals by month.

YMQ

Temperature

15.8 - 71.6 °F

If weather is an important factor for your trip to Montreal, 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 Montreal

Get insights into the airlines that provide service to Montreal. 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 Montreal. Reviews last updated junio 6, 2024.
Read through reviews of airlines operating flights from St. Louis to Montreal, such as American Airlines, Delta and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,368 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

United Airlines
7.4
Good
10,696 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,227 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Air Canada
7.0
Good
7,044 reviews
Delta
8.0
Very good
10,368 reviews

Food

7.4

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

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

    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 5 airlines. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • Can I find flights from St. Louis to Montreal for under $400 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Montreal for under $400. The cheapest flight booked recently is on Multiple Airlines for just $393, but on average you can expect to pay $456.

  • Are there nonstop flights from St. Louis to Montreal for under $600 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Montreal under $600. A good price for a nonstop flight from St. Louis to Montreal is less than $795.

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

    There are currently 19+ open flights from St. Louis to Montreal within the next 7 days for less than $600.

  • 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 $451. Another airline that can offer you cheap pricing is American Airlines. Delta is currently priced 12% 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 American Airlines, with whom users have recently found tickets for as low as $195. However, be on the lookout for offers from United Airlines and Air Canada, as they are both options that can get you from St. Louis to Montreal for a low price.

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

    Consider Air Canada (58%), Jazz (58%) or United Airlines (58%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Montreal.

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

    Looking at all options, your cheapest flight can be booked for $274. While the most popular route (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl) can be booked for $365 on average our data indicates $827 when flying from St. Louis to Montreal.

  • 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.

  • Can I find deals for flights from St. Louis to Montreal that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Montreal flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Montreal with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Montreal flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

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

  • Can I find deals for flights from St. Louis to Montreal that allow pets onboard?

    Many airlines flying from St. Louis to Montreal offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Montreal?

    Yes, you can often find last-minute deals on St. Louis to Montreal flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Montreal flight deals updated?

    The St. Louis to Montreal flight deals you see on this page were last updated on 6/6.

  • 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.

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

    Currently, February is the cheapest month in which you can book a flight from St. Louis to Montreal (average of $246). Flying from St. Louis to Montreal in July is currently the most expensive (average of $444). 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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Alternative routes for St. Louis to Montreal
See prices for flight routes from nearby airports that may be better suited for you.

St. Louis to Pierre Elliott Trudeau Intl flights
Kansas City to Pierre Elliott Trudeau Intl flights
St. Louis to Québec City flights
Kansas City to Québec City flights
Springfield to Pierre Elliott Trudeau Intl flights
Kansas City to Ottawa flights
St. Louis to Ottawa flights
Columbia to Pierre Elliott Trudeau Intl flights
Joplin to Pierre Elliott Trudeau Intl flights

Top 5 airlines flying from St. Louis to Montreal

Discover the top 5 airlines that operate flights from St. Louis to Montreal. 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 3,050,429 searches. Data last updated junio 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$237Average$503FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$267Average$562FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$274Average$502FlexibilityNo cancel feeOn-time71%
DeltaCheapest$383Average$591FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$501Average$645FlexibilityNo cancel feeOn-time60%
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Search flights from St. Louis to Montreal by cabin class

Find flights from St. Louis to Montreal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from St. Louis to Montreal

Find hourly flight availability from St. Louis to Montreal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 6, 2024.
0%of flight departuresEarly morningMidnight to 6 am
100%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
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