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

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

Weekly flight availability from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis

The most flights from YUL to STL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

No one likes to see their flight delayed. When booking a flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis consider choosing Air Canada (65%), Jazz (65%) or United Airlines (65%) as they are the most reliable in getting you off to your destination on time.

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

The best pricing can be found in the month of July. Prices to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport average $557. You can even find prices in July for less than $557, as users have found deals to St. Louis from as low as $286. The month of June appears to be one of the more expensive times to travel to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport. Flying in the targeted month can save you up to 45%.

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

For a flight from Montreal Pierre Elliott Trudeau Intl to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 2 inbound flights from Montreal Pierre Elliott Trudeau Intl per day. 2 airlines have flights to Lambert-St Louis from Montreal Pierre Elliott Trudeau Intl on a regular basis.

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

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

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

Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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.

$193+ Cheap Flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis

Q: How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?

Airfare is below average for this route at the moment. Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flights typically cost between $536 and $595 in November. The cheapest round-trip price found within the last 3 days was $367 on Multiple Airlines (Nov 7-Nov 14).

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

Round-trip from	$367 (Kiwi.com)
One-way from	$193 (Kiwi.com)
Popular in	August
Cheapest in	May
Average price	$560
Good round-trip deal	$1,065 or less

From Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis

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

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Highest demand for flights based on searches. 11% potential increase in price ($79 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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

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

Cheapest flights from Pierre Elliott Trudeau Intl to St. Louis
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Fri 11/76:45 amYUL - STL

2 stops14h 27mMultiple Airlines

Fri 11/142:12 pmSTL - YUL

1 stop9h 18mMultiple Airlines

Deal found 9/9

$367

Thu 11/62:30 pmYUL - STL

2 stops24h 27mMultiple Airlines

Thu 11/1312:20 pmSTL - YUL

1 stop25h 50mMultiple Airlines

Deal found 9/9

$391

Sun 10/265:24 pmYUL - STL

1 stop15h 45mAmerican Airlines

Sun 11/25:00 amSTL - YUL

1 stop8h 11mAmerican Airlines

Deal found 9/11

$392

Wed 11/57:30 pmYUL - STL

1 stop13h 43mDelta

Wed 11/126:09 pmSTL - YUL

2 stops13h 27mDelta

Deal found 9/10

$397

Fri 10/246:35 pmYUL - STL

2 stops39h 47mMultiple Airlines

Fri 10/312:12 pmSTL - YUL

1 stop9h 18mMultiple Airlines

Deal found 9/9

$406

Thu 11/63:52 pmYUL - STL

1 stop9h 04mAmerican Airlines

Thu 11/136:00 amSTL - YUL

1 stop5h 15mAmerican Airlines

Deal found 9/9

$424

Fri 10/2412:30 pmYUL - STL

1 stop12h 24mAmerican Airlines

Fri 10/3112:51 pmSTL - YUL

1 stop8h 49mAmerican Airlines

Deal found 9/9

$431

Sun 10/264:35 pmYUL - STL

2 stops27h 51mMultiple Airlines

Sun 11/210:57 amSTL - YUL

1 stop27h 13mMultiple Airlines

Deal found 9/11

$436

Wed 11/510:50 amYUL - STL

2 stops11h 50mUnited Airlines

Wed 11/126:30 amSTL - YUL

2 stops11h 32mUnited Airlines

Deal found 9/10

$495

Mon 11/1712:50 pmYUL - STL

1 stop8h 56mDelta

Thu 11/202:36 pmSTL - YUL

1 stop7h 50mDelta

Deal found 9/11

$522

Mon 11/173:49 pmYUL - STL

1 stop9h 07mAmerican Airlines

Thu 11/206:00 amSTL - YUL

1 stop8h 22mAmerican Airlines

Deal found 9/10

$523

Best flights from Pierre Elliott Trudeau Intl to St. Louis
Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Thu 11/62:30 pmYUL - STL

2 stops24h 27mMultiple Airlines

Thu 11/1312:20 pmSTL - YUL

1 stop25h 50mMultiple Airlines

Deal found 9/9

$391

Wed 11/57:30 pmYUL - STL

1 stop13h 43mDelta

Wed 11/126:09 pmSTL - YUL

2 stops13h 27mDelta

Deal found 9/10

$397

Thu 11/63:52 pmYUL - STL

1 stop9h 04mAmerican Airlines

Thu 11/136:00 amSTL - YUL

1 stop5h 15mAmerican Airlines

Deal found 9/9

$424

Wed 11/56:00 amYUL - STL

1 stop12h 39mUnited Airlines

Wed 11/126:30 amSTL - YUL

1 stop11h 10mUnited Airlines

Deal found 9/10

$495

Fri 10/246:35 pmYUL - STL

2 stops39h 47mMultiple Airlines

Fri 10/312:12 pmSTL - YUL

1 stop9h 18mMultiple Airlines

Deal found 9/9

$406

Mon 11/1712:50 pmYUL - STL

1 stop8h 56mDelta

Thu 11/202:36 pmSTL - YUL

1 stop7h 50mDelta

Deal found 9/11

$522

Mon 11/173:49 pmYUL - STL

1 stop9h 07mAmerican Airlines

Thu 11/206:00 amSTL - YUL

1 stop8h 22mAmerican Airlines

Deal found 9/10

$523

Mon 11/176:45 amYUL - STL

2 stops14h 27mMultiple Airlines

Thu 11/2012:20 pmSTL - YUL

1 stop25h 50mMultiple Airlines

Deal found 9/10

$557

Thu 9/257:00 amYUL - STL

1 stop9h 25mDelta

Mon 9/295:28 pmSTL - YUL

1 stop15h 38mDelta

Deal found 9/9

$611

Thu 10/96:35 pmYUL - STL

2 stops17h 02mMultiple Airlines

Thu 10/1610:57 amSTL - YUL

1 stop26h 53mMultiple Airlines

Deal found 9/11

$569

Last-minute flights from Pierre Elliott Trudeau Intl to St. Louis
Discover last-minute flight deals from Pierre Elliott Trudeau Intl to St. Louis. Data last updated September 11, 2025 and is based on user searches.

Thu 9/257:00 amYUL - STL

1 stop9h 25mDelta

Mon 9/295:28 pmSTL - YUL

1 stop15h 38mDelta

Deal found 9/9

$611

Thu 9/257:00 amYUL - STL

1 stop12h 10mMultiple Airlines

Sun 9/2810:35 amSTL - YUL

2 stops30h 20mMultiple Airlines

Deal found 9/9

$623

Fri 9/266:59 pmYUL - STL

1 stop5h 25mDelta

Mon 9/295:28 pmSTL - YUL

1 stop15h 38mDelta

Deal found 9/9

$654

Thu 10/910:30 amYUL - STL

1 stop13h 25mAmerican Airlines

Thu 10/166:00 amSTL - YUL

1 stop4h 40mAmerican Airlines

Deal found 9/11

$541

Thu 10/96:35 pmYUL - STL

2 stops17h 02mMultiple Airlines

Thu 10/1610:57 amSTL - YUL

1 stop26h 53mMultiple Airlines

Deal found 9/11

$569

Fri 10/246:35 pmYUL - STL

2 stops39h 47mMultiple Airlines

Fri 10/312:12 pmSTL - YUL

1 stop9h 18mMultiple Airlines

Deal found 9/9

$406

Fri 10/2412:30 pmYUL - STL

1 stop12h 24mAmerican Airlines

Fri 10/3112:51 pmSTL - YUL

1 stop8h 49mAmerican Airlines

Deal found 9/9

$431

Sun 10/265:24 pmYUL - STL

1 stop15h 45mAmerican Airlines

Sun 11/25:00 amSTL - YUL

1 stop8h 11mAmerican Airlines

Deal found 9/11

$392

Sun 10/264:35 pmYUL - STL

2 stops27h 51mMultiple Airlines

Sun 11/210:57 amSTL - YUL

1 stop27h 13mMultiple Airlines

Deal found 9/11

$436

One-way flights from Pierre Elliott Trudeau Intl to St. Louis
Search for one-way flight options from Pierre Elliott Trudeau Intl to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Thu 10/306:45 amYUL - STL

3 stops27h 22mMultiple Airlines

Deal found 9/10

$193

Sat 10/256:45 amYUL - STL

2 stops27h 37mMultiple Airlines

Deal found 9/10

$207

Sat 10/412:31 pmYUL - STL

1 stop9h 01mAmerican Airlines

Deal found 9/10

$209

Sat 10/2512:30 pmYUL - STL

1 stop10h 36mAmerican Airlines

Deal found 9/10

$213

Sun 11/24:35 pmYUL - STL

2 stops41h 32mMultiple Airlines

Deal found 9/10

$218

Sat 10/188:15 amYUL - STL

2 stops8h 03mAir Canada

Deal found 9/9

$267

Sat 10/411:00 amYUL - STL

2 stops12h 00mDelta

Deal found 9/10

$273

Tue 9/236:45 amYUL - STL

3 stops52h 09mMultiple Airlines

Deal found 9/9

$276

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

2:30 pm-1:57 pm

2 stops24h 27m

Lambert-St Louis

Thu 11/13

12:20 pm-3:10 pm

1 stop25h 50m

$391

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 11/5

7:30 pm-8:13 am

1 stop13h 43m

Lambert-St Louis

Wed 11/12

6:09 pm-8:36 am

2 stops13h 27m

$397

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 10/24

6:35 pm-9:22 am

2 stops39h 47m

Lambert-St Louis

Fri 10/31

2:12 pm-12:30 am

1 stop9h 18m

$406

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

3:52 pm-11:56 pm

1 stop9h 04m

Lambert-St Louis

Thu 11/13

6:00 am-12:15 pm

1 stop5h 15m

$424

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 11/5

6:00 am-5:39 pm

1 stop12h 39m

Lambert-St Louis

Wed 11/12

6:30 am-6:40 pm

1 stop11h 10m

$495

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 11/17

12:50 pm-8:46 pm

1 stop8h 56m

Lambert-St Louis

Thu 11/20

2:36 pm-11:26 pm

1 stop7h 50m

$522

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 11/17

3:49 pm-11:56 pm

1 stop9h 07m

Lambert-St Louis

Thu 11/20

6:00 am-3:22 pm

1 stop8h 22m

$523

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 11/17

6:45 am-8:12 pm

2 stops14h 27m

Lambert-St Louis

Thu 11/20

12:20 pm-3:10 pm

1 stop25h 50m

$557

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/9

6:35 pm-10:37 am

2 stops17h 02m

Lambert-St Louis

Thu 10/16

10:57 am-2:50 pm

1 stop26h 53m

$569

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 9/25

7:00 am-3:25 pm

1 stop9h 25m

Lambert-St Louis

Mon 9/29

5:28 pm-10:06 am

1 stop15h 38m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results

The best insider tips for Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flights

Cheapflights partnered with top experts to bring you the best recommendations for your Montreal Pierre Elliott Trudeau Intl Airport to St. Louis trip

Airports

YUL

Use YULExpress to pre-book security fast track up to 72 hours before departure for a smoother experience.

STL

Take the MetroLink from STL for a convenient 40-minute ride to downtown St. Louis, avoiding traffic.

Our travel experts

John Walton

Expert on YUL

Taryn White

Expert on STL

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

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Pierre Elliott Trudeau Intl 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 Montreal Pierre Elliott Trudeau Intl Airport to St. Louis

Prices

Airlines

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

Currently, August is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis (average of $311). Flying from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis in March is currently the most expensive (average of $356). 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 YUL to STL?

It’s typically best to fly out from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis in the evening. Doing so could potentially save you 53% on the flight price compared to flying at noon, which is usually more expensive.

How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Delta and Air Canada from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Delta

8.0

Very good

7,960 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Air Canada

7.1

Good

10,000 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

What airport do you fly into for flights to St. Louis from Montreal Pierre Elliott Trudeau Intl?
For a flight from Montreal Pierre Elliott Trudeau Intl to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city. Lambert-St Louis is the only St. Louis airport and it handles 2 inbound flights from Montreal Pierre Elliott Trudeau Intl per day. 2 airlines have flights to Lambert-St Louis from Montreal Pierre Elliott Trudeau Intl on a regular basis.
How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?
Delta and American Airlines can get you from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis in just under 9h 04m. Your travel time can differ by up to 4h 39m. The distance from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis is about 967 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis round-trip?
Our cheapest airline available from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis is Air Canada. Our recent data shows that you can find tickets from as low as $435 on this airline. An additional option worth looking into is Delta, starting at $452. Air Canada is priced at 25% lower than the current average price of a flight leaving 3 months from now.
What are the most reliable airlines from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?
No one likes to see their flight delayed. When booking a flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis consider choosing Air Canada (65%), Jazz (65%) or United Airlines (65%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?
While on average a flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis is generally $1,065, our data shows the cheapest flight currently is $561. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis), you can expect to pay $367 for that flight.
Can I find deals for flights from Pierre Elliott Trudeau Intl to St. Louis that include hotel bookings?
Yes. In addition to deals on Pierre Elliott Trudeau Intl to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Pierre Elliott Trudeau Intl to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pierre Elliott Trudeau Intl to St. Louis.
Can I find deals for business class flights from Pierre Elliott Trudeau Intl to St. Louis?
Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis (average of $311). Flying from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis in March is currently the most expensive (average of $356). 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 2 airlines flying from Pierre Elliott Trudeau Intl to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$435	Average$561	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$452	Average$511	FlexibilityNo cancel fee	On-timeN/A

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$193+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to St. Louis (STL)

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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheapest flights from Pierre Elliott Trudeau Intl to St. LouisExplore the most affordable flight options available from Pierre Elliott Trudeau Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

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

The best insider tips for Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flights

Cheapflights partnered with top experts to bring you the best recommendations for your Montreal Pierre Elliott Trudeau Intl Airport to St. Louis trip

Airports

YUL

STL

Our travel experts

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

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

Cheapflights Insights

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

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

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

How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?

Weekly flight availability from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Delta and Air Canada from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis to help guide your decision. You can also see how each airline stacks up 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 Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl?

How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?

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

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

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

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

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

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

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

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Alternative routes for Pierre Elliott Trudeau Intl to St. Louis

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Top 2 airlines flying from Pierre Elliott Trudeau Intl to St. Louis

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Cheapest flights from Pierre Elliott Trudeau Intl to St. Louis
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.