How long is the flight from Quebec to St. Louis?

Airlines like United Airlines, American Airlines, and Air Canada fly from Quebec to St. Louis in about 4h 48m. The time it takes to get you to your destination can typically vary by up to 12h 24m. Quebec and St. Louis are separated by a distance of 1413 km. Both multi-stop and direct flights can be found to your destination and back.

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.

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).

What are the most popular routes from Quebec to St. Louis?

Most travellers choose Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis, Ottawa - Lambert-St Louis or Québec City - Lambert-St Louis when deciding on the best route from Quebec to St. Louis.

What are the cheapest flights from Quebec to St. Louis?

On average you can expect to pay C$ 494 for a flight from Quebec to St. Louis. The cheapest flight overall is C$ 494 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) is currently priced at C$ 529.

What are the most popular airlines that fly from Quebec to St. Louis?

Consider Air Canada, WestJet or United Airlines when booking your flight. These represent the most popular airlines when flying from Quebec to St. Louis.

What airport do you fly into for flights to St. Louis from Quebec?

Located just 20.4 km from the city centre, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Quebec.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Quebec 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.

C$ 184+ Flights from Quebec to St. Louis

Q: How much does it cost to fly round-trip from Quebec to St. Louis?

Airfare is below average for this route at the moment. Quebec to St. Louis flights typically cost between C$ 832 and C$ 1,011 in January. The cheapest round-trip price found within the last 3 days was C$ 487 on Multiple Airlines (11 Jan-13 Jan).

Cheap flight deals from Quebec to St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from Quebec to St. Louis
Explore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 December 2025.

Wed 31/124:35 p.m.YUL - STL

1 stop30h 58mMultiple Airlines

Mon 26/15:42 p.m.STL - YUL

2 stops30h 01mMultiple Airlines

Deal found 21/12C$ 898

Wed 24/127:00 a.m.YUL - STL

1 stop10h 28mDelta

Mon 26/16:00 a.m.STL - YUL

1 stop9h 55mDelta

Deal found 21/12C$ 972

Wed 31/127:00 a.m.YUL - STL

2 stops10h 27mUnited Airlines

Mon 26/19:57 a.m.STL - YUL

2 stops10h 45mUnited Airlines

Deal found 21/12C$ 1,030

Fri 26/123:59 p.m.YUL - STL

1 stop5h 52mAmerican Airlines

Fri 2/17:05 a.m.STL - YUL

1 stop14h 34mAmerican Airlines

Deal found 20/12C$ 1,077

Wed 24/127:00 a.m.YUL - STL

1 stop10h 28mDelta

Wed 31/126:29 a.m.STL - YUL

1 stop4h 29mDelta

Deal found 21/12C$ 1,100

Wed 24/1212:37 p.m.YUL - STL

1 stop7h 27mWestJet

Mon 26/19:45 a.m.STL - YUL

2 stops13h 58mWestJet

Deal found 21/12C$ 1,177

Wed 24/127:00 a.m.YUL - STL

2 stops10h 27mUnited Airlines

Mon 26/19:57 a.m.STL - YUL

2 stops10h 45mUnited Airlines

Deal found 21/12C$ 1,194

Fri 26/126:45 a.m.YUL - STL

2 stops11h 16mWestJet

Fri 2/16:29 a.m.STL - YUL

1 stop4h 30mWestJet

Deal found 22/12C$ 1,311

Sat 27/127:00 a.m.YUL - STL

2 stops10h 27mUnited Airlines

Fri 2/111:05 a.m.STL - YUL

2 stops7h 43mUnited Airlines

Deal found 21/12C$ 1,437

Wed 24/127:30 p.m.YUL - STL

2 stops27h 46mWestJet

Wed 31/127:10 a.m.STL - YUL

2 stops22h 55mWestJet

Deal found 21/12C$ 1,505

Best flights from Quebec to St. Louis
Discover carefully curated flight deals from Quebec to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 23 December 2025.

Thu 9/45:20 p.m.YOW - STL

1 stop4h 48mUnited Airlines

Sat 11/47:45 a.m.STL - YOW

1 stop5h 14mUnited Airlines

Deal found 21/12C$ 425

Sun 11/14:35 p.m.YUL - STL

1 stop16h 30mMultiple Airlines

Tue 13/15:11 p.m.STL - YUL

2 stops22h 49mMultiple Airlines

Deal found 22/12C$ 487

Wed 4/27:00 a.m.YUL - STL

1 stop17h 12mAmerican Airlines

Wed 11/26:00 a.m.STL - YUL

1 stop8h 08mAmerican Airlines

Deal found 20/12C$ 662

Sat 21/37:00 a.m.YUL - STL

1 stop8h 24mDelta

Tue 31/35:15 p.m.STL - YUL

1 stop14h 15mDelta

Deal found 21/12C$ 708

Wed 14/19:15 a.m.YQB - STL

2 stops7h 14mAir Canada

Sun 18/14:05 p.m.STL - YQB

1 stop5h 38mAir Canada

Deal found 20/12C$ 743

Wed 21/12:15 p.m.YOW - STL

1 stop6h 12mUnited Airlines

Sat 24/17:00 a.m.STL - YOW

1 stop5h 32mUnited Airlines

Deal found 20/12C$ 428

Sun 8/28:00 a.m.YUL - STL

2 stops40h 33mMultiple Airlines

Sun 15/23:49 p.m.STL - YUL

1 stop7h 41mMultiple Airlines

Deal found 22/12C$ 529

Fri 6/25:25 p.m.YUL - STL

2 stops31h 08mMultiple Airlines

Fri 13/23:49 p.m.STL - YUL

1 stop7h 41mMultiple Airlines

Deal found 22/12C$ 534

Sat 21/37:00 a.m.YUL - STL

1 stop8h 24mDelta

Sun 5/43:05 p.m.STL - YUL

1 stop7h 35mDelta

Deal found 21/12C$ 721

Wed 28/11:02 p.m.YUL - STL

1 stop4h 35mDelta

Sat 31/16:35 a.m.STL - YUL

1 stop4h 37mDelta

Deal found 21/12C$ 721

Wed 14/16:00 a.m.YQB - STL

2 stops11h 03mUnited Airlines

Sun 18/18:05 a.m.STL - YQB

2 stops13h 42mUnited Airlines

Deal found 20/12C$ 728

Fri 16/12:45 p.m.YUL - STL

1 stop17h 06mMultiple Airlines

Mon 19/15:11 p.m.STL - YUL

2 stops30h 32mMultiple Airlines

Deal found 21/12C$ 683

Thu 22/17:00 a.m.YUL - STL

1 stop8h 49mDelta

Mon 26/16:35 a.m.STL - YUL

1 stop4h 37mDelta

Deal found 20/12C$ 721

Wed 4/210:55 a.m.YQB - STL

1 stop5h 20mAir Canada

Wed 11/26:30 a.m.STL - YQB

2 stops10h 44mAir Canada

Deal found 21/12C$ 1,041

Wed 4/210:55 a.m.YQB - STL

1 stop5h 20mUnited Airlines

Wed 11/24:05 p.m.STL - YQB

1 stop5h 38mUnited Airlines

Deal found 21/12C$ 1,251

Last-minute flights from Quebec to St. Louis
Discover last-minute flight deals from Quebec to St. Louis. Data last updated 23 December 2025 and is based on user searches.

Sun 11/14:35 p.m.YUL - STL

1 stop16h 30mMultiple Airlines

Tue 13/15:11 p.m.STL - YUL

2 stops22h 49mMultiple Airlines

Deal found 22/12C$ 487

Sun 11/14:35 p.m.YUL - STL

1 stop16h 30mMultiple Airlines

Mon 12/11:07 p.m.STL - YUL

2 stops16h 58mMultiple Airlines

Deal found 22/12C$ 490

Wed 14/16:00 a.m.YQB - STL

2 stops9h 30mUnited Airlines

Sun 18/111:20 a.m.STL - YQB

2 stops10h 27mUnited Airlines

Deal found 21/12C$ 728

Wed 14/110:55 a.m.YQB - STL

1 stop5h 34mAir Canada

Sun 18/14:05 p.m.STL - YQB

1 stop5h 38mAir Canada

Deal found 20/12C$ 739

Fri 16/13:50 p.m.YUL - STL

1 stop19h 30mAmerican Airlines

Mon 19/16:00 a.m.STL - YUL

1 stop8h 08mAmerican Airlines

Deal found 21/12C$ 635

Fri 16/12:45 p.m.YUL - STL

1 stop17h 06mMultiple Airlines

Mon 19/15:11 p.m.STL - YUL

2 stops30h 32mMultiple Airlines

Deal found 21/12C$ 683

Sat 17/13:50 p.m.YUL - STL

1 stop22h 13mAmerican Airlines

Mon 19/16:00 a.m.STL - YUL

1 stop8h 08mAmerican Airlines

Deal found 21/12C$ 710

Mon 19/17:27 p.m.YOW - STL

1 stop15h 46mUnited Airlines

Sat 24/17:00 a.m.STL - YOW

1 stop5h 32mUnited Airlines

Deal found 22/12C$ 648

Wed 21/16:00 a.m.YOW - STL

2 stops9h 30mUnited Airlines

Sat 24/16:30 a.m.STL - YOW

2 stops9h 00mUnited Airlines

Deal found 21/12C$ 428

Thu 22/17:00 a.m.YUL - STL

1 stop8h 49mDelta

Mon 26/16:35 a.m.STL - YUL

1 stop4h 37mDelta

Deal found 20/12C$ 721

Wed 28/18:50 a.m.YUL - STL

2 stops7h 39mAir Canada

Sat 31/14:05 p.m.STL - YUL

1 stop4h 48mAir Canada

Deal found 22/12C$ 741

Wed 28/19:34 a.m.YUL - STL

2 stops12h 09mDelta

Sat 31/17:25 a.m.STL - YUL

1 stop5h 06mDelta

Deal found 21/12C$ 743

One-way flights from Quebec to St. Louis
Search for one-way flight options from Quebec to St. Louis. Find affordable one-way fares based on user searches. Data last updated 23 December 2025.

Thu 5/25:25 p.m.YUL - STL

2 stops17h 58mMultiple Airlines

Deal found 21/12C$ 184

Thu 9/410:15 a.m.YOW - STL

1 stop6h 09mAir Canada

Deal found 21/12C$ 246

Thu 9/46:00 a.m.YOW - STL

2 stops16h 08mUnited Airlines

Deal found 21/12C$ 260

Sat 11/45:00 a.m.YOW - STL

2 stops8h 22mUnited Airlines

Deal found 21/12C$ 297

Thu 5/29:34 a.m.YUL - STL

1 stop8h 08mDelta

Deal found 21/12C$ 402

Thu 5/26:00 a.m.YQB - STL

2 stops9h 30mUnited Airlines

Deal found 22/12C$ 405

Thu 5/210:55 a.m.YQB - STL

1 stop5h 34mAir Canada

Deal found 22/12C$ 406

Wed 4/210:55 a.m.YQB - STL

1 stop5h 20mAir Canada

Deal found 21/12C$ 409

Thu 5/21:30 p.m.YQB - STL

3 stops21h 53mMultiple Airlines

Deal found 22/12C$ 421

Sat 11/46:55 p.m.YOW - STL

3 stops40h 07mMultiple Airlines

Deal found 21/12C$ 431

Sat 27/127:08 a.m.YUL - STL

1 stop17h 48mAmerican Airlines

Deal found 20/12C$ 549

Sat 27/128:25 a.m.YUL - STL

2 stops10h 29mUnited Airlines

Deal found 20/12C$ 693

Find flight deals from Quebec to St. Louis

Round-trip from	C$ 425
One-way from	C$ 184
Popular in	June
Cheapest in	July
Average price	C$ 1,063
Good one-way deal	C$ 494 or less

United Airlines
9/4-11/4
2 total stops
10h 02m total
Quebec to St. Louis

Search Deals

5/2
2 total stops
17h 58m total
Quebec to St. Louis

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (C$ 27 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 39 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a one-way flight from Quebec to Lambert-St Louis.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/4

5:20 p.m.-9:08 p.m.

1 stop4h 48m

Lambert-St Louis

Sat 11/4

7:45 a.m.-1:59 p.m.

1 stop5h 14m

C$ 425

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 21/1

2:15 p.m.-7:27 p.m.

1 stop6h 12m

Lambert-St Louis

Sat 24/1

7:00 a.m.-1:32 p.m.

1 stop5h 32m

C$ 428

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 11/1

4:35 p.m.-8:05 a.m.

1 stop16h 30m

Lambert-St Louis

Tue 13/1

5:11 p.m.-5:00 p.m.

2 stops22h 49m

C$ 487

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 8/2

8:00 a.m.-11:33 p.m.

2 stops40h 33m

Lambert-St Louis

Sun 15/2

3:49 p.m.-12:30 a.m.

1 stop7h 41m

C$ 529

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 6/2

5:25 p.m.-11:33 p.m.

2 stops31h 08m

Lambert-St Louis

Fri 13/2

3:49 p.m.-12:30 a.m.

1 stop7h 41m

C$ 534

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 4/2

7:00 a.m.-11:12 p.m.

1 stop17h 12m

Lambert-St Louis

Wed 11/2

6:00 a.m.-3:08 p.m.

1 stop8h 08m

C$ 662

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 16/1

2:45 p.m.-6:51 a.m.

1 stop17h 06m

Lambert-St Louis

Mon 19/1

5:11 p.m.-12:43 a.m.

2 stops30h 32m

C$ 683

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 21/3

7:00 a.m.-2:24 p.m.

1 stop8h 24m

Lambert-St Louis

Tue 31/3

5:15 p.m.-8:30 a.m.

1 stop14h 15m

C$ 708

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 21/3

7:00 a.m.-2:24 p.m.

1 stop8h 24m

Lambert-St Louis

Sun 5/4

3:05 p.m.-11:40 p.m.

1 stop7h 35m

C$ 721

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 28/1

1:02 p.m.-4:37 p.m.

1 stop4h 35m

Lambert-St Louis

Sat 31/1

6:35 a.m.-12:12 p.m.

1 stop4h 37m

C$ 721

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/12

Showing 1-10 of 29 results

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

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

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

Currently, March is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 540). Flying from Quebec to St. Louis in December is currently the most expensive (average of C$ 807). 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 QC to STL?

One of the essential ways to save on airfare from Quebec to St. Louis is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 28% on airfare.

How much does it cost to fly round-trip from Quebec to St. Louis?

Related info for your journey

What airport do you fly into for flights to St. Louis from Quebec?
Located just 20.4 km from the city centre, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Quebec.
How long is the flight from Quebec to St. Louis?
Airlines like United Airlines, American Airlines, and Air Canada fly from Quebec to St. Louis in about 4h 48m. The time it takes to get you to your destination can typically vary by up to 12h 24m. Quebec and St. Louis are separated by a distance of 1413 km. Both multi-stop and direct flights can be found to your destination and back.
What are the most popular routes from Quebec to St. Louis?
Most travellers choose Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis, Ottawa - Lambert-St Louis or Québec City - Lambert-St Louis when deciding on the best route from Quebec to St. Louis.
What are the cheapest flights from Quebec to St. Louis?
On average you can expect to pay C$ 494 for a flight from Quebec to St. Louis. The cheapest flight overall is C$ 494 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) is currently priced at C$ 529.
Can I find deals for flights from Quebec to St. Louis that include hotel bookings?
Yes. In addition to deals on Quebec to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Quebec to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Quebec to St. Louis.
Can I find deals for business class flights from Quebec to St. Louis?
Yes. Cheapflights offers flight deals from Quebec 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 Quebec to St. Louis?
Currently, March is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 540). Flying from Quebec to St. Louis in December is currently the most expensive (average of C$ 807). 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

Chesterfield

St. Peters

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Top 3 airlines flying from Quebec to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 539	AverageC$ 730	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 590	AverageC$ 629	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
WestJet	CheapestC$ 738	AverageC$ 1,016	FlexibilityNo cancel fee	On-time60%	Search WestJet flights

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How does Cheapflights help users find flights from Quebec to St. Louis?

Cheapflights makes it easy to find Quebec to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Quebec to St. Louis?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Quebec to St. Louis for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Quebec to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Quebec to St. Louis flexibly with Cheapflights today.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to St. Louis from Quebec today and book when prices fit your budget.

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Cheap flights from Quebec to St. Louis from C$ 184

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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Quebec to St. Louis

Cheapest flights from Quebec to St. LouisExplore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 December 2025.

Explore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 December 2025.

Find flight deals from Quebec to St. Louis

Keep the following information in mind while searching for Quebec to St. Louis flight deals. Data was last updated 23 December 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Quebec to St. Louis that are best for you.

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

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

Cheapflights Insights

Everything you need to know about your flight from Quebec to St. Louis

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

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

Find hourly flight availability from Quebec 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 23 December 2025.

How much does it cost to fly round-trip from Quebec to St. Louis?

Related info for your journey

Find useful and relevant information for your journey from Quebec 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 Quebec?

How long is the flight from Quebec to St. Louis?

What are the most popular routes from Quebec to St. Louis?

What are the cheapest flights from Quebec to St. Louis?

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

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

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

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

Travelling to a place near St. Louis?

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Alternative routes for Quebec to St. Louis

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Top 3 airlines flying from Quebec to St. Louis

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How does Cheapflights help users find flights from Quebec to St. Louis?

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

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Cheapest flights from Quebec to St. Louis
Explore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 December 2025.