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Cheap flights from St. Louis to Québec City from C$ 428

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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YQB
11 Jan — 18 Jan1
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 12 December 2025.

Tue 30/124:05 p.m.STL - YQB
1 stop5h 23mAir Canada
Sun 4/17:05 p.m.YQB - STL
2 stops21h 24mAir Canada
Deal found 11/12C$ 1,109
Tue 30/124:05 p.m.STL - YQB
1 stop5h 23mAir Canada
Mon 5/16:00 a.m.YQB - STL
2 stops10h 29mAir Canada
Deal found 11/12C$ 1,183
Tue 30/124:05 p.m.STL - YQB
1 stop5h 23mUnited Airlines
Sun 4/15:10 p.m.YQB - STL
1 stop7h 33mUnited Airlines
Deal found 11/12C$ 1,718

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 12 December 2025.

Round-trip from

C$ 935

One-way from

C$ 428

Popular in

July

Cheapest in

October

Average price

C$ 1,085
Air Canada
  • Air Canada
  • 18/1-21/1
  • 2 total stops
  • 11h 12m total
  • St. Louis to Québec City
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United Airlines
  • United Airlines
  • 4/1
  • 1 total stop
  • 7h 52m total
  • St. Louis to Québec City
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 164 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 34 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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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 12 December 2025.
Use the filters below to find and compare flights from St. Louis to Québec City that are best for you.

Fly from

St. Louis

Fly to

Québec City

Route

Depart

Return

Price

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sun 18/1

4:05 p.m.-10:43 p.m.

1 stop5h 38m

Québec City

Wed 21/1

10:55 a.m.-3:29 p.m.

1 stop5h 34m

C$ 935

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 24/1

4:05 p.m.-10:43 p.m.

1 stop5h 38m

Québec City

Sat 31/1

10:55 a.m.-3:29 p.m.

1 stop5h 34m

C$ 935

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 9/2

4:05 p.m.-11:28 p.m.

1 stop6h 23m

Québec City

Thu 12/2

10:55 a.m.-3:29 p.m.

1 stop5h 34m

C$ 935

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sun 15/2

4:05 p.m.-10:43 p.m.

1 stop5h 38m

Québec City

Wed 18/2

10:55 a.m.-3:29 p.m.

1 stop5h 34m

C$ 935

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sun 4/1

7:00 a.m.-3:52 p.m.

1 stop7h 52m

C$ 428

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sun 4/1

10:57 a.m.-3:20 p.m.

3 stops27h 23m

C$ 476

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

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

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Québec City (average of C$ 244). Flying from St. Louis to Québec City in August is currently the most expensive (average of C$ 1,096). 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.

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 38m. Fly via Air Canada to get the fastest option. The distance between St. Louis and Québec City is about 1782 km.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Québec City?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Québec City (average of C$ 244). Flying from St. Louis to Québec City in August is currently the most expensive (average of C$ 1,096). 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

Travelling to a place near Québec City?

Book flights to Québec City if you plan to visit one of these locations
Victoriaville

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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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