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

For as low as $309, United Airlines can have you in St. Louis from Quebec in 4h 48m. The distance from Quebec to St. Louis is about 878 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 to fly from Quebec to St. Louis one-way?

The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $196. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Quebec to St. Louis for a low price.

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

Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Quebec to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

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.

$134+ 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 $604 and $734 in February. The cheapest round-trip price found within the last 3 days was $384 on Multiple Airlines (Feb 8-Feb 15).

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Cheap flight deals from Quebec to St. Louis

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 December 23, 2025.

Wed 12/314:35 pmYUL - STL

1 stop30h 58mMultiple Airlines

Mon 1/265:42 pmSTL - YUL

2 stops30h 01mMultiple Airlines

Deal found 12/21

$652

Wed 12/247:00 amYUL - STL

1 stop10h 28mDelta

Mon 1/266:00 amSTL - YUL

1 stop9h 55mDelta

Deal found 12/21

$706

Wed 12/317:00 amYUL - STL

2 stops10h 27mUnited Airlines

Mon 1/269:57 amSTL - YUL

2 stops10h 45mUnited Airlines

Deal found 12/21

$748

Fri 12/263:59 pmYUL - STL

1 stop5h 52mAmerican Airlines

Fri 1/27:05 amSTL - YUL

1 stop14h 34mAmerican Airlines

Deal found 12/20

$782

Wed 12/247:00 amYUL - STL

1 stop10h 28mDelta

Wed 12/316:29 amSTL - YUL

1 stop4h 29mDelta

Deal found 12/21

$799

Wed 12/2412:37 pmYUL - STL

1 stop7h 27mWestJet

Mon 1/269:45 amSTL - YUL

2 stops13h 58mWestJet

Deal found 12/21

$855

Wed 12/247:00 amYUL - STL

2 stops10h 27mUnited Airlines

Mon 1/269:57 amSTL - YUL

2 stops10h 45mUnited Airlines

Deal found 12/21

$867

Fri 12/266:45 amYUL - STL

2 stops11h 16mWestJet

Fri 1/26:29 amSTL - YUL

1 stop4h 30mWestJet

Deal found 12/22

$952

Sat 12/277:00 amYUL - STL

2 stops10h 27mUnited Airlines

Fri 1/211:05 amSTL - YUL

2 stops7h 43mUnited Airlines

Deal found 12/21

$1,044

Wed 12/247:30 pmYUL - STL

2 stops27h 46mWestJet

Wed 12/317:10 amSTL - YUL

2 stops22h 55mWestJet

Deal found 12/21

$1,093

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 December 23, 2025.

Thu 4/95:20 pmYOW - STL

1 stop4h 48mUnited Airlines

Sat 4/117:45 amSTL - YOW

1 stop5h 14mUnited Airlines

Deal found 12/21

$309

Sun 2/88:00 amYUL - STL

2 stops40h 33mMultiple Airlines

Sun 2/153:49 pmSTL - YUL

1 stop7h 41mMultiple Airlines

Deal found 12/22

$384

Wed 2/47:00 amYUL - STL

1 stop17h 12mAmerican Airlines

Wed 2/116:00 amSTL - YUL

1 stop8h 08mAmerican Airlines

Deal found 12/20

$481

Sat 3/217:00 amYUL - STL

1 stop8h 24mDelta

Tue 3/315:15 pmSTL - YUL

1 stop14h 15mDelta

Deal found 12/21

$514

Wed 1/212:15 pmYOW - STL

1 stop6h 12mUnited Airlines

Sat 1/247:00 amSTL - YOW

1 stop5h 32mUnited Airlines

Deal found 12/20

$311

Fri 2/65:25 pmYUL - STL

2 stops31h 08mMultiple Airlines

Fri 2/133:49 pmSTL - YUL

1 stop7h 41mMultiple Airlines

Deal found 12/22

$388

Mon 1/197:27 pmYOW - STL

1 stop15h 46mUnited Airlines

Sat 1/247:00 amSTL - YOW

1 stop5h 32mUnited Airlines

Deal found 12/22

$471

Sat 3/217:00 amYUL - STL

1 stop8h 24mDelta

Sun 4/53:05 pmSTL - YUL

1 stop7h 35mDelta

Deal found 12/21

$524

Sat 3/217:30 amYUL - STL

1 stop5h 58mAmerican Airlines

Sat 3/216:33 pmSTL - YUL

1 stop19h 30mAmerican Airlines

Deal found 12/21

$533

Fri 1/162:45 pmYUL - STL

1 stop17h 06mMultiple Airlines

Mon 1/195:11 pmSTL - YUL

2 stops30h 32mMultiple Airlines

Deal found 12/21

$496

Wed 1/281:02 pmYUL - STL

1 stop4h 35mDelta

Sat 1/316:35 amSTL - YUL

1 stop4h 37mDelta

Deal found 12/21

$524

Thu 1/227:00 amYUL - STL

1 stop8h 49mDelta

Mon 1/266:35 amSTL - YUL

1 stop4h 37mDelta

Deal found 12/20

$524

Mon 1/195:40 amYOW - STL

2 stops11h 57mDelta

Sat 1/2410:19 amSTL - YOW

2 stops13h 23mDelta

Deal found 12/21

$567

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

Fri 1/163:50 pmYUL - STL

1 stop19h 30mAmerican Airlines

Mon 1/196:00 amSTL - YUL

1 stop8h 08mAmerican Airlines

Deal found 12/21

$461

Fri 1/162:45 pmYUL - STL

1 stop17h 06mMultiple Airlines

Mon 1/195:11 pmSTL - YUL

2 stops30h 32mMultiple Airlines

Deal found 12/21

$496

Fri 1/167:00 pmYUL - STL

2 stops17h 02mUnited Airlines

Mon 1/194:49 pmSTL - YUL

1 stop16h 31mUnited Airlines

Deal found 12/21

$551

Sat 1/173:50 pmYUL - STL

1 stop22h 13mAmerican Airlines

Mon 1/196:00 amSTL - YUL

1 stop8h 08mAmerican Airlines

Deal found 12/21

$516

Sat 1/179:15 amYUL - STL

2 stops12h 58mUnited Airlines

Mon 1/196:30 amSTL - YUL

2 stops11h 41mUnited Airlines

Deal found 12/21

$581

Mon 1/197:27 pmYOW - STL

1 stop15h 46mUnited Airlines

Sat 1/247:00 amSTL - YOW

1 stop5h 32mUnited Airlines

Deal found 12/22

$471

Mon 1/195:40 amYOW - STL

2 stops11h 57mDelta

Sat 1/2410:19 amSTL - YOW

2 stops13h 23mDelta

Deal found 12/21

$567

Mon 1/198:00 amYUL - STL

2 stops47h 51mMultiple Airlines

Mon 1/268:22 pmSTL - YUL

1 stop14h 23mMultiple Airlines

Deal found 12/21

$580

Wed 1/215:55 pmYOW - STL

1 stop7h 04mUnited Airlines

Sat 1/248:30 amSTL - YOW

1 stop4h 57mUnited Airlines

Deal found 12/21

$311

Thu 1/222:40 pmYUL - STL

1 stop9h 45mDelta

Mon 1/266:10 amSTL - YUL

1 stop6h 32mDelta

Deal found 12/21

$524

Wed 1/288:50 amYUL - STL

2 stops7h 39mAir Canada

Sat 1/314:05 pmSTL - YUL

1 stop4h 48mAir Canada

Deal found 12/22

$538

Wed 1/289:34 amYUL - STL

2 stops12h 09mDelta

Sat 1/317:25 amSTL - YUL

1 stop5h 06mDelta

Deal found 12/21

$540

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 December 23, 2025.

Thu 2/55:25 pmYUL - STL

2 stops17h 58mMultiple Airlines

Deal found 12/21

$134

Thu 4/910:15 amYOW - STL

1 stop6h 09mAir Canada

Deal found 12/21

$179

Thu 4/96:00 amYOW - STL

2 stops16h 08mUnited Airlines

Deal found 12/21

$189

Sat 4/115:00 amYOW - STL

2 stops8h 22mUnited Airlines

Deal found 12/21

$216

Thu 2/59:34 amYUL - STL

1 stop8h 08mDelta

Deal found 12/21

$292

Sat 4/116:55 pmYOW - STL

3 stops40h 07mMultiple Airlines

Deal found 12/21

$313

Sat 12/273:10 pmYOW - STL

2 stops8h 33mUnited Airlines

Deal found 12/22

$363

Sat 12/277:08 amYUL - STL

1 stop17h 48mAmerican Airlines

Deal found 12/20

$399

Sat 12/278:25 amYUL - STL

2 stops10h 29mUnited Airlines

Deal found 12/20

$503

Sat 12/2710:15 amYUL - STL

3 stops24h 25mMultiple Airlines

Deal found 12/20

$580

Sat 12/276:45 amYOW - STL

3 stops13h 48mAmerican Airlines

Deal found 12/22

$668

Find flight deals from Quebec to St. Louis

Round-trip from	$309 (United Airlines)
One-way from	$134 (Trip.com)
Popular in	June
Cheapest in	July
Average price	$772

From Quebec to Lambert-St Louis

Search Deals

One-way flight from Quebec to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 2% potential increase in price ($14 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 4/9

5:20 pm-9:08 pm

1 stop4h 48m

Lambert-St Louis

Sat 4/11

7:45 am-1:59 pm

1 stop5h 14m

$309

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 1/21

2:15 pm-7:27 pm

1 stop6h 12m

Lambert-St Louis

Sat 1/24

7:00 am-1:32 pm

1 stop5h 32m

$311

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 2/8

8:00 am-11:33 pm

2 stops40h 33m

Lambert-St Louis

Sun 2/15

3:49 pm-12:30 am

1 stop7h 41m

$384

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 2/6

5:25 pm-11:33 pm

2 stops31h 08m

Lambert-St Louis

Fri 2/13

3:49 pm-12:30 am

1 stop7h 41m

$388

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mon 1/19

7:27 pm-10:13 am

1 stop15h 46m

Lambert-St Louis

Sat 1/24

7:00 am-1:32 pm

1 stop5h 32m

$471

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 2/4

7:00 am-11:12 pm

1 stop17h 12m

Lambert-St Louis

Wed 2/11

6:00 am-3:08 pm

1 stop8h 08m

$481

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 1/16

2:45 pm-6:51 am

1 stop17h 06m

Lambert-St Louis

Mon 1/19

5:11 pm-12:43 am

2 stops30h 32m

$496

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 3/21

7:00 am-2:24 pm

1 stop8h 24m

Lambert-St Louis

Tue 3/31

5:15 pm-8:30 am

1 stop14h 15m

$514

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 3/21

7:00 am-2:24 pm

1 stop8h 24m

Lambert-St Louis

Sun 4/5

3:05 pm-11:40 pm

1 stop7h 35m

$524

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 1/28

1:02 pm-4:37 pm

1 stop4h 35m

Lambert-St Louis

Sat 1/31

6:35 am-12:12 pm

1 stop4h 37m

$524

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 25 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 $392). Flying from Quebec to St. Louis in December is currently the most expensive (average of $586). 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?

When flying from Quebec to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 57% versus a flight in the afternoon.

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?
Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Quebec to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.
How long is the flight from Quebec to St. Louis?
For as low as $309, United Airlines can have you in St. Louis from Quebec in 4h 48m. The distance from Quebec to St. Louis is about 878 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 to fly from Quebec to St. Louis one-way?
The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $196. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Quebec to St. Louis for a low price.
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 $392). Flying from Quebec to St. Louis in December is currently the most expensive (average of $586). 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

Edwardsville

O'Fallon

Swansea

Fairview Heights

Maryland Heights

Collinsville

Eureka

Glencoe

Chesterfield

Alton

Farmington

Festus

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Top 2 airlines flying from Quebec 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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$134+ Cheap flights from Quebec 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Quebec to St. Louis with Cheapflights

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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 December 23, 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 December 23, 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 December 23, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 December 23, 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 cheapest airlines to fly from Quebec to St. Louis one-way?

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?

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Alternative routes for Quebec to St. Louis

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Top 2 airlines flying from Quebec to St. Louis

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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 December 23, 2025.