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Cheap flights from St. Louis to Quebec from C$ 303

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 16/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YUL
5 May — 12 May1
1 adult

Cheap flight deals from St. Louis to Quebec

Keep the following information in mind while searching for St. Louis to Quebec flight deals. Data was last updated 30 April 2025.

Round-trip from

C$ 627

One-way from

C$ 303

Popular in

February

Cheapest in

November

Average price

C$ 800

Good round-trip deal

C$ 805 or less
12/6-15/6
  • 12/6-15/6
  • 6 total stops
  • 58h 03m total
  • St. Louis to Quebec
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American Airlines
  • American Airlines
  • 16/6
  • 1 total stop
  • 18h 27m total
  • St. Louis to Quebec
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Highest demand for flights based on searches. 12% potential increase in price (C$ 168 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Quebec.
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Find flight deals from St. Louis to Quebec

Cheapest flights from St. Louis to Quebec
Explore the most affordable flight options available from St. Louis to Quebec. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 April 2025.

Thu 12/66:12 p.m.STL - YUL
3 stops29h 25mMultiple Airlines
Sun 15/66:55 a.m.YUL - STL
3 stops28h 38mMultiple Airlines
Deal found 29/4C$ 627
Sun 8/61:30 p.m.STL - YQB
1 stop5h 06mAir Canada
Thu 12/63:18 p.m.YQB - STL
1 stop8h 27mAir Canada
Deal found 29/4C$ 666
Mon 16/68:05 p.m.STL - YQB
1 stop16h 35mAmerican Airlines
Thu 19/61:05 p.m.YQB - STL
1 stop8h 14mAmerican Airlines
Deal found 28/4C$ 673
Thu 29/56:45 p.m.STL - YUL
1 stop25h 24mDelta
Mon 2/66:05 a.m.YUL - STL
1 stop15h 43mDelta
Deal found 29/4C$ 682
Thu 29/56:00 p.m.STL - YUL
1 stop14h 50mAmerican Airlines
Thu 5/610:35 a.m.YUL - STL
1 stop11h 20mAmerican Airlines
Deal found 30/4C$ 794
Thu 29/51:30 p.m.STL - YUL
Nonstop2h 30mAir Canada
Mon 2/66:10 p.m.YUL - STL
Nonstop2h 48mAir Canada
Deal found 29/4C$ 843
Thu 29/55:00 a.m.STL - YUL
1 stop4h 40mUnited Airlines
Thu 5/66:10 p.m.YUL - STL
Nonstop2h 48mUnited Airlines
Deal found 29/4C$ 880
Fri 13/67:30 a.m.STL - YQB
1 stop7h 25mUnited Airlines
Fri 20/65:20 a.m.YQB - STL
2 stops11h 10mUnited Airlines
Deal found 29/4C$ 919
Fri 13/66:00 a.m.STL - YUL
1 stop27h 08mWestJet
Fri 20/66:45 p.m.YUL - STL
1 stop22h 40mWestJet
Deal found 29/4C$ 1,005

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Quebec 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 629,999 searches. Data last updated 30 April 2025.
Use the filters below to find and compare flights from St. Louis to Quebec that are best for you.

Fly from

St. Louis

Fly to

Quebec

Route

Depart

Return

Price

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 12/6

6:12 p.m.-12:37 a.m.

3 stops29h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 15/6

6:55 a.m.-10:33 a.m.

3 stops28h 38m

C$ 627

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sun 8/6

1:30 p.m.-7:36 p.m.

1 stop5h 06m

Québec City

Thu 12/6

3:18 p.m.-10:45 p.m.

1 stop8h 27m

C$ 666

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 16/6

8:05 p.m.-1:40 p.m.

1 stop16h 35m

Québec City

Thu 19/6

1:05 p.m.-8:19 p.m.

1 stop8h 14m

C$ 673

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 29/5

6:45 p.m.-9:09 p.m.

1 stop25h 24m

Montreal Pierre Elliott Trudeau Intl

Mon 2/6

6:05 a.m.-8:48 p.m.

1 stop15h 43m

C$ 682

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sun 1/6

6:00 p.m.-9:50 a.m.

1 stop14h 50m

Montreal Pierre Elliott Trudeau Intl

Thu 5/6

10:35 a.m.-8:55 p.m.

1 stop11h 20m

C$ 775

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 29/5

1:30 p.m.-5:00 p.m.

Nonstop2h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 2/6

6:10 p.m.-7:58 p.m.

Nonstop2h 48m

C$ 843

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 29/5

5:00 a.m.-10:40 a.m.

1 stop4h 40m

Montreal Pierre Elliott Trudeau Intl

Thu 5/6

6:10 p.m.-7:58 p.m.

Nonstop2h 48m

C$ 880

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Fri 13/6

7:30 a.m.-3:55 p.m.

1 stop7h 25m

Québec City

Fri 20/6

5:20 a.m.-3:30 p.m.

2 stops11h 10m

C$ 919

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 13/6

6:00 a.m.-10:08 a.m.

1 stop27h 08m

Montreal Pierre Elliott Trudeau Intl

Fri 20/6

6:45 p.m.-4:25 p.m.

1 stop22h 40m

C$ 1,005

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 16/6

4:58 p.m.-12:25 p.m.

1 stop18h 27m

C$ 303

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/4

Showing 1-10 of 17 results
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Best time to book a flight from St. Louis to Quebec

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

Cheapflights Insights

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

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

Currently, October is the cheapest month in which you can book a flight from St. Louis to Quebec (average of C$ 241). Flying from St. Louis to Quebec in April is currently the most expensive (average of C$ 314). 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.

Rainfall in Quebec by month

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

In terms of precipitation, rainfall in Quebec ranges from 64.0 - 111.0 mm per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Quebec when rainfall is around 64.0 mm.

Temperature in Quebec by month

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

If weather is an important factor for your trip to Quebec, 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 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).

Reviews of airlines servicing Quebec

Get insights into the airlines that provide service to Quebec. 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 Quebec. Reviews last updated 30 April 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from St. Louis to Quebec by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,929 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,826 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,244 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Quebec. It is only a 20.4 km journey to Lambert-St Louis (STL) from St. Louis’s city centre.

  • What are the cheapest airlines to fly from St. Louis to Quebec one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at C$ 303. Air Canada flights start at C$ 345 while deals on Delta start at C$ 353 one-way.

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

    Looking for the cheapest flight from St. Louis to Quebec? While on average our users pay C$ 805, our data indicates the cheapest price to be C$ 367. The most popular route (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl), is priced around C$ 519.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Quebec (average of C$ 241). Flying from St. Louis to Quebec in April is currently the most expensive (average of C$ 314). 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 Quebec

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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

Cheapflights helps you search for flights from St. Louis to Quebec via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Quebec.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Quebec, users can toggle the no change fees filter when performing a flight search.

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

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

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