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Cheap flights from St. Louis to Québec City from C$ 345

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 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YQB
17 Jun — 24 Jun1
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 12 June 2025.

Round-trip from

C$ 812

One-way from

C$ 345

Popular in

September

Cheapest in

January

Average price

C$ 756
American Airlines
  • American Airlines
  • 14/8-18/8
  • 2 total stops
  • 25h 22m total
  • St. Louis to Québec City
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4/7
  • 4/7
  • 2 total stops
  • 26h 45m total
  • St. Louis to Québec City
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 42 potential savings vs. average RT price).
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Average for round-trip flights in June 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 12 June 2025.

Thu 14/87:59 p.m.STL - YQB
1 stop16h 45mAmerican Airlines
Mon 18/84:14 p.m.YQB - STL
1 stop8h 37mAmerican Airlines
Deal found 11/6C$ 812
Sat 26/710:45 a.m.STL - YQB
2 stops26h 10mMultiple Airlines
Sat 2/85:20 a.m.YQB - STL
3 stops31h 50mMultiple Airlines
Deal found 11/6C$ 860
Sat 26/71:30 p.m.STL - YQB
1 stop5h 11mAir Canada
Sat 2/81:35 p.m.YQB - STL
2 stops7h 05mAir Canada
Deal found 11/6C$ 867
Mon 24/116:43 p.m.STL - YQB
1 stop18h 30mUnited Airlines
Fri 28/112:55 p.m.YQB - STL
1 stop8h 52mUnited Airlines
Deal found 10/6C$ 1,001

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 June 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

Thu 14/8

7:59 p.m.-1:44 p.m.

1 stop16h 45m

Québec City

Mon 18/8

4:14 p.m.-11:51 p.m.

1 stop8h 37m

C$ 812

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 26/7

10:45 a.m.-1:55 p.m.

2 stops26h 10m

Québec City

Sat 2/8

5:20 a.m.-12:10 p.m.

3 stops31h 50m

C$ 860

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 26/7

1:30 p.m.-7:41 p.m.

1 stop5h 11m

Québec City

Sat 2/8

1:35 p.m.-7:40 p.m.

2 stops7h 05m

C$ 867

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 24/11

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

1 stop18h 30m

Québec City

Fri 28/11

2:55 p.m.-10:47 p.m.

1 stop8h 52m

C$ 1,001

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Fri 4/7

2:55 p.m.-6:40 p.m.

2 stops26h 45m

C$ 345

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Thu 25/9

8:03 p.m.-11:44 a.m.

2 stops14h 41m

C$ 380

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Fri 4/7

9:15 a.m.-3:40 p.m.

1 stop5h 25m

C$ 455

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 18/10

3:23 p.m.-2:16 p.m.

1 stop21h 53m

C$ 461

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Wed 8/10

3:30 p.m.-10:56 p.m.

3 stops30h 26m

C$ 3,653

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

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.

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 12 June 2025.
United Airlines
7.4
Good
8,790 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Crew

8.1

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
8,790 reviews
United Airlines
7.4
Good
8,790 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Crew

8.1

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
8,790 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Crew

8.1

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
9,531 reviews
United Airlines
7.4
Good
8,790 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Crew

8.1

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??
Lufthansa
6.8
Okay
7,136 reviews
United Airlines
7.4
Good
8,790 reviews
Check prices

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.0

Boarding

7.7

Crew

8.1

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$ 812. Other airlines that can offer you cheap pricing are Air Canada, from C$ 867, and United Airlines, from C$ 1,001.

  • 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 American Airlines (C$ 380), Air Canada (C$ 455), and United Airlines (C$ 461).

  • 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

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