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Cheap flights from St. Louis to Québec City from C$ 455

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YQB
13 Apr — 20 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St. Louis to Québec City

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis to Québec City
Explore the most affordable flight options available from St. Louis to Québec City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 March 2026.

Fri 24/44:05 p.m.
STL
-
YQB
1 stop5h 20m
Air Canada
Fri 1/55:35 a.m.
YQB
-
STL
2 stops7h 31m
Air Canada
Deal found 10/3C$ 859
Sun 26/44:05 p.m.
STL
-
YQB
1 stop5h 35m
Air Canada
Sun 3/51:55 p.m.
YQB
-
STL
2 stops7h 09m
Air Canada
Deal found 11/3C$ 903
Mon 1/65:40 p.m.
STL
-
YQB
1 stop20h 51m
American Airlines
Fri 5/61:57 p.m.
YQB
-
STL
1 stop6h 25m
American Airlines
Deal found 9/3C$ 992
Wed 20/55:21 p.m.
STL
-
YQB
1 stop18h 56m
American Airlines
Sat 23/51:48 p.m.
YQB
-
STL
1 stop8h 32m
American Airlines
Deal found 10/3C$ 993
Tue 19/57:05 a.m.
STL
-
YQB
1 stop5h 25m
Air Canada
Fri 22/52:50 p.m.
YQB
-
STL
1 stop6h 35m
Air Canada
Deal found 10/3C$ 1,004
Mon 6/47:45 a.m.
STL
-
YQB
1 stop5h 18m
United Airlines
Mon 13/43:00 p.m.
YQB
-
STL
1 stop7h 13m
United Airlines
Deal found 9/3C$ 1,007
Fri 3/44:05 p.m.
STL
-
YQB
1 stop5h 20m
Air Canada
Sun 5/410:40 a.m.
YQB
-
STL
1 stop5h 45m
Air Canada
Deal found 9/3C$ 1,010

Find flight deals from St. Louis to Québec City

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Québec City (YQB). 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 14 March 2026.

Round-trip from

C$ 859

One-way from

C$ 455

Popular in

March

Cheapest in

October

Average price

C$ 1,343
Air Canada
  • Air Canada
  • 24/4-1/5
  • 3 total stops
  • 12h 51m total
  • St. Louis to Québec City
Search Deals
United Airlines
  • United Airlines
  • 25/5
  • 1 total stop
  • 5h 02m total
  • St. Louis to Québec City
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Québec City 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 14 March 2026.
Use the filters below to find and compare flights from St. Louis to Québec City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Fri 24/4

6:30 a.m.-3:55 p.m.

2 stops8h 25m

Québec City

Fri 1/5

1:05 p.m.-8:04 p.m.

2 stops7h 59m

C$ 947

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Wed 20/5

5:21 p.m.-1:17 p.m.

1 stop18h 56m

Québec City

Sat 23/5

1:48 p.m.-9:20 p.m.

1 stop8h 32m

C$ 993

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 6/4

7:45 a.m.-2:03 p.m.

1 stop5h 18m

Québec City

Mon 13/4

3:00 p.m.-9:13 p.m.

1 stop7h 13m

C$ 1,007
Quickest round-trip

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Fri 3/4

4:05 p.m.-10:25 p.m.

1 stop5h 20m

Québec City

Sun 5/4

10:40 a.m.-3:25 p.m.

1 stop5h 45m

C$ 1,010

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 25/4

7:45 a.m.-2:03 p.m.

1 stop5h 18m

Québec City

Sat 2/5

6:00 a.m.-7:51 p.m.

2 stops14h 51m

C$ 1,021

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 1/6

8:15 p.m.-12:02 p.m.

2 stops14h 47m

Québec City

Fri 5/6

4:55 p.m.-11:35 p.m.

1 stop7h 40m

C$ 1,021

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Thu 25/6

7:05 a.m.-1:30 p.m.

1 stop5h 25m

Québec City

Sun 28/6

5:35 a.m.-12:21 p.m.

2 stops7h 46m

C$ 1,022

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Thu 25/6

6:01 a.m.-12:02 p.m.

1 stop5h 01m

Québec City

Sun 28/6

4:55 p.m.-11:45 p.m.

1 stop7h 50m

C$ 1,022

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Fri 3/4

1:10 p.m.-10:41 p.m.

2 stops8h 31m

Québec City

Sun 5/4

6:00 a.m.-9:13 p.m.

2 stops16h 13m

C$ 1,028
Cheapest one-way
Quickest one-way

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 25/5

6:00 a.m.-12:02 p.m.

1 stop5h 02m

C$ 455

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/3

Showing 1-10 of 12 resultsSorted by cheapest first
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Best time to book a flight from St. Louis to Québec City

Have a flexible travel schedule? Discover the best time to fly to Québec City 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 Québec City

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

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Québec City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Québec City?

    There are many flights that can get you from St. Louis to Québec City in 5h 18m. Fly via Air Canada, American Airlines, or United Airlines to get the fastest option. The distance between St. Louis and Québec City is about 1782 km. This flight may include one or multiple stops.

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

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

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

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

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

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

See more FAQs

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

Cheapflights helps you find that perfect flight to Québec City from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes, we can. To see specific flights from St. Louis to Québec City with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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