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Cheap flights from St. Louis to Québec City from C$ 387

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 18/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YQB
3 Aug — 10 Aug1
1 adult

Cheap 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 29 July 2025.

Round-trip from

C$ 723

One-way from

C$ 387

Popular in

July

Cheapest in

January

Average price

C$ 1,103
American Airlines
  • American Airlines
  • 26/8-2/9
  • 2 total stops
  • 40h 46m total
  • St. Louis to Québec City
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United Airlines
  • United Airlines
  • 18/10
  • 2 total stops
  • 23h 37m total
  • St. Louis to Québec City
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Highest demand for flights based on searches. 15% potential increase in price (C$ 210 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 37 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from St. Louis to Québec City

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 29 July 2025.

Tue 26/84:19 p.m.STL - YQB
1 stop20h 25mAmerican Airlines
Tue 2/94:14 p.m.YQB - STL
1 stop20h 21mAmerican Airlines
Deal found 27/7C$ 723
Fri 12/94:05 p.m.STL - YQB
1 stop5h 05mAir Canada
Fri 19/97:25 a.m.YQB - STL
2 stops8h 53mAir Canada
Deal found 29/7C$ 767
Tue 26/89:17 a.m.STL - YQB
2 stops11h 53mUnited Airlines
Tue 2/95:20 a.m.YQB - STL
2 stops11h 24mUnited Airlines
Deal found 27/7C$ 859
Mon 10/116:43 p.m.STL - YQB
1 stop18h 30mMultiple Airlines
Sat 15/112:55 p.m.YQB - STL
1 stop8h 50mMultiple Airlines
Deal found 29/7C$ 866

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 29 July 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

Tue 26/8

4:19 p.m.-1:44 p.m.

1 stop20h 25m

Québec City

Tue 2/9

4:14 p.m.-11:35 a.m.

1 stop20h 21m

C$ 723

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Fri 12/9

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

1 stop5h 05m

Québec City

Fri 19/9

7:25 a.m.-3:18 p.m.

2 stops8h 53m

C$ 767

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Tue 26/8

9:17 a.m.-10:10 p.m.

2 stops11h 53m

Québec City

Tue 2/9

5:20 a.m.-3:44 p.m.

2 stops11h 24m

C$ 859

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 10/11

6:43 p.m.-2:13 p.m.

1 stop18h 30m

Québec City

Sat 15/11

2:55 p.m.-10:45 p.m.

1 stop8h 50m

C$ 866

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 18/10

3:23 p.m.-4:00 p.m.

2 stops23h 37m

C$ 387

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Thu 25/9

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

1 stop5h 05m

C$ 416

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Thu 25/9

9:56 a.m.-1:44 p.m.

1 stop26h 48m

C$ 432

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 18/10

5:28 p.m.-2:16 p.m.

1 stop19h 48m

C$ 442

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

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, May is the cheapest month in which you can book a flight from St. Louis to Québec City (average of C$ 258). Flying from St. Louis to Québec City in December is currently the most expensive (average of C$ 432). 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.

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

Reviews of airlines servicing Québec City

Get insights into the airlines that provide service to Québec City. 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 Québec City. Reviews last updated 29 July 2025.
Get a feel of what it's like to fly with United Airlines,American Airlines, andAir Canada from St. Louis to Québec City by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,899 reviews
Check prices

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,899 reviews
United Airlines
7.4
Good
8,899 reviews
Check prices

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,899 reviews
Check prices

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,822 reviews
United Airlines
7.4
Good
8,899 reviews
Check prices

Boarding

7.7

Overall

7.4

Entertainment

7.1

Comfort

7.3

Crew

8.1

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • What are the cheapest airlines flying from St. Louis to Québec City round-trip?

    Cheapflights users have booked flights from St. Louis to Québec City round-trip from C$ 723. Other airlines that can offer you cheap pricing are Air Canada, from C$ 767, and United Airlines, from C$ 859. These flights start at 11% lower than the current average price 3 months from now.

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

    The cheapest airlines for a one-way flight from St. Louis to Québec City are United Airlines (C$ 387), Air Canada (C$ 416), and American Airlines (C$ 432).

  • 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, May is the cheapest month in which you can book a flight from St. Louis to Québec City (average of C$ 258). Flying from St. Louis to Québec City in December is currently the most expensive (average of C$ 432). 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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