St. Louis — flights from Toronto to St. Louis

Flight Deals from Toronto Pearson International Airport to St. Louis from $346

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Essential information to help you plan your flight from Toronto to St. Louis.

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American AirlinesAmerican Airlinesfound Oct 13
11/10/26
3:15 pm
YYZToronto Pearson Airport
8h 0mORDChicago O Hare Airport
11/10/26
10:15 pm
STLSt Louis Lambert International Airport
11/17/26
6:00 am
STLSt Louis Lambert International Airport
7h 34mORDChicago O Hare Airport
11/17/26
2:34 pm
YYZToronto Pearson Airport
$454
United AirlinesUnited Airlinesfound Oct 11
11/02/26
2:35 pm
YYZToronto Pearson Airport
8h 5mORDChicago O Hare Airport
11/02/26
9:40 pm
STLSt Louis Lambert International Airport
11/09/26
1:00 pm
STLSt Louis Lambert International Airport
8h 18mDCAReagan Washington National Airport
11/09/26
10:18 pm
YYZToronto Pearson Airport
$582
United AirlinesUnited Airlinesfound Oct 11
11/02/26
2:35 pm
YYZToronto Pearson Airport
8h 5mORDChicago O Hare Airport
11/02/26
9:40 pm
STLSt Louis Lambert International Airport
11/09/26
1:00 pm
STLSt Louis Lambert International Airport
9h 52mIADWashington Dulles Airport
11/09/26
11:52 pm
YYZToronto Pearson Airport
$582
United AirlinesUnited Airlinesfound Oct 11
11/02/26
8:35 am
YYZToronto Pearson Airport
8h 8mORDChicago O Hare Airport
11/02/26
3:43 pm
STLSt Louis Lambert International Airport
11/09/26
1:00 pm
STLSt Louis Lambert International Airport
9h 52mIADWashington Dulles Airport
11/09/26
11:52 pm
YYZToronto Pearson Airport
$582
Flight plus hotel
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Book a flight & hotel together for extra savings.

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United AirlinesUnited Airlinesfound Oct 11
11/02/26
8:20 am
YYZToronto Pearson Airport
8h 23mORDChicago O Hare Airport
11/02/26
3:43 pm
STLSt Louis Lambert International Airport
11/09/26
1:00 pm
STLSt Louis Lambert International Airport
9h 52mIADWashington Dulles Airport
11/09/26
11:52 pm
YYZToronto Pearson Airport
$582
American AirlinesAmerican Airlinesfound Oct 13
11/10/26
3:15 pm
YYZToronto Pearson Airport
8h 0mORDChicago O Hare Airport
11/10/26
10:15 pm
STLSt Louis Lambert International Airport
11/17/26
7:26 am
STLSt Louis Lambert International Airport
4h 6mORDChicago O Hare Airport
11/17/26
12:32 pm
YYZToronto Pearson Airport
$644
Air CanadaAir Canadafound Oct 7
11/04/26
2:10 pm
YYZToronto Pearson Airport
2h 16m
11/04/26
3:26 pm
STLSt Louis Lambert International Airport
11/11/26
1:00 pm
STLSt Louis Lambert International Airport
8h 18mDCAReagan Washington National Airport
11/11/26
10:18 pm
YYZToronto Pearson Airport
$683
American AirlinesAmerican Airlinesfound Oct 13
11/10/26
3:15 pm
YYZToronto Pearson Airport
8h 0mORDChicago O Hare Airport
11/10/26
10:15 pm
STLSt Louis Lambert International Airport
11/17/26
5:00 am
STLSt Louis Lambert International Airport
4h 50mORDChicago O Hare Airport
11/17/26
10:50 am
YYZToronto Pearson Airport
$644
Air CanadaAir Canadafound Oct 13
11/10/26
2:10 pm
YYZToronto Pearson Airport
2h 13m
11/10/26
3:23 pm
STLSt Louis Lambert International Airport
11/17/26
7:30 am
STLSt Louis Lambert International Airport
8h 17mORDChicago O Hare Airport
11/17/26
4:47 pm
YYZToronto Pearson Airport
$688
Air CanadaAir Canadafound Oct 13
11/10/26
2:10 pm
YYZToronto Pearson Airport
2h 13m
11/10/26
3:23 pm
STLSt Louis Lambert International Airport
11/17/26
10:53 am
STLSt Louis Lambert International Airport
9h 22mORDChicago O Hare Airport
11/17/26
9:15 pm
YYZToronto Pearson Airport
$688

Top Deals on flights from Toronto to St. Louis

Toronto, CA (YYZ) - St. Louis, US (STL)

United AirlinesUnited Airlines

Nov 1

8:40 pm
YYZToronto Pearson Airport
13h 13m1 stop · EWR

Nov 2

8:53 am
STLSt Louis Lambert International Airport
Search More

as low as

$346

Toronto, CA (YYZ) - St. Louis, US (STL)

Air CanadaAir Canada

Nov 1

2:10 pm
YYZToronto Pearson Airport
2h 13mNonstop

Nov 1

3:23 pm
STLSt Louis Lambert International Airport
Search More

as low as

$372

Toronto, CA (YYZ) - St. Louis, US (STL)

United AirlinesUnited Airlines

Nov 1

6:55 pm
YYZToronto Pearson Airport
15h 0m1 stop · ORD

Nov 2

8:55 am
STLSt Louis Lambert International Airport
Search More

as low as

$379

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

7:09 am
YYZToronto Pearson Airport
4h 38m1 stop · ORD

Nov 1

10:47 am
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

6:21 pm
YYZToronto Pearson Airport
4h 54m1 stop · ORD

Nov 1

10:15 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

3:15 pm
YYZToronto Pearson Airport
5h 7m1 stop · ORD

Nov 1

7:22 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

10:45 am
YYZToronto Pearson Airport
5h 39m1 stop · LGA

Nov 1

3:24 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

7:15 am
YYZToronto Pearson Airport
5h 47m1 stop · CLT

Nov 1

12:02 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

1:17 pm
YYZToronto Pearson Airport
6h 0m1 stop · ORD

Nov 1

6:17 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

6:21 pm
YYZToronto Pearson Airport
6h 34m1 stop · ORD

Nov 1

11:55 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

6:07 pm
YYZToronto Pearson Airport
6h 51m1 stop · CLT

Nov 1

11:58 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YYZ) - St. Louis, US (STL)

American AirlinesAmerican Airlines

Nov 1

1:17 pm
YYZToronto Pearson Airport
7h 5m1 stop · ORD

Nov 1

7:22 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Best St. Louis Hotel + Flight Packages

Toronto - St. Louis packages

Best St. Louis Hotel + Flight + Car Packages

Toronto - St. Louis packages

When is the best time of day to fly?

Morning (5am - 12pm) is the cheapest time of day to fly from Toronto to St. Louis. At $712 it is 2% cheaper than the average time. Afternoon (2pm - 5pm) is the most expensive time, 4% above average.

$712Morning$714Midday$755Afternoon$717Evening
Show the data
When is the best time of day to fly?
Time of dayAverage fare
Morning$712
Midday$714
Afternoon$755
Evening$717

What do round-trip flights from Toronto to St. Louis cost?

Share of fares in each price range.

3%$500to $6009%$600to $70081%$700to $8003%$800to $9000%$900to $1,0002%$1,000to $1,1002%$1,100and up
Show the data
What do round-trip flights from Toronto to St. Louis cost?
Price rangeShare of fares
$500 to $6003%
$600 to $7009%
$700 to $80081%
$800 to $9003%
$900 to $1,0000%
$1,000 to $1,1002%
$1,100 and up2%

Frequently Asked Questions

Everything you need to know about flying from Toronto to St. Louis.

What is the typical flight duration from Toronto to St. Louis?

Flights from Toronto to St. Louis cover about 650 miles, with a typical nonstop flight time of 2 hours and 7 minutes. The return leg from St. Louis to Toronto runs about 1 hour and 57 minutes, making the outbound direction slightly longer.
Methodology
Flight times and distances come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). The typical flight time is the median scheduled block time across all carriers on the route, computed the same way in both directions so the difference reflects prevailing winds rather than any change in method. Distance is the great-circle distance between the two airports, so the actual flown track is typically 2-5% longer.

Are there any direct flights from Toronto to St. Louis?

Air Canada flies non-stop from Toronto to St. Louis, with two daily departures at 12:55 PM and 6:55 PM, for 14 weekly flights running every day of the week. Air Canada is currently the only airline scheduled non-stop on this route.
Methodology
Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.

What are the ground transportation options in St. Louis?

Ground transportation from St. Louis Lambert International Airport to downtown is straightforward: the MetroLink light rail runs directly from the airport to the city center and is the most-used option, with trains every 7–10 minutes during the day. Taxis cost about $30–45 and take roughly 15–20 minutes via I-70, while rideshare services like Uber and Lyft have designated pickup zones at both terminals. Car rentals from major agencies (Alamo, Avis, Budget, Dollar, Enterprise, Hertz, National, Thrifty) are available at the airport's Rental Car Center, reached by a free shuttle. Airport shuttles charge around $15 one-way, and the Greyhound bus also stops at the airport. For most travelers, MetroLink is the fastest and cheapest way into downtown, avoiding highway traffic entirely.
References

When is the cheapest time to fly from Toronto to St. Louis?

Average fares from Toronto to St. Louis bottom out around $278 in late January, with January, September, and October the cheapest months overall at about $290–292. The most expensive stretch is late December, when average fares climb to roughly $350, with December as the priciest month at $334 on average.
Methodology
Seasonal fares come from Priceline's own air booking-summary archive, analysed in-house and refreshed monthly. For each day of the year we take a representative round-trip fare, a blend of the 25th-percentile and average ticket price over the route's bookings, and smooth the series into a seasonal curve; the half-month low and high and the monthly figures quoted here are averages of that curve. Thin and international routes borrow their seasonal shape from the nearest busy routes, with the price level anchored to the route's own bookings.

How far in advance should I book tickets from Toronto to St. Louis?

For Toronto to St. Louis, the best fares come when you book about 4 to 6 weeks ahead of departure, with the absolute lowest price around 30 days out at roughly $245. During summer and holiday periods, demand pushes fares higher, so locking in closer to the 6-week mark or slightly earlier is usually the smart play, while booking more than 3 months out tends to cost notably more.
Methodology
Booking-window guidance comes from the same monthly in-house analysis of Priceline's own air booking-summary archive. We aggregate the route's bookings by how many days before departure they were made, from about 180 days out to the day of travel, smooth the curve, and highlight the stretch of lead times with the lowest average fare. Thin and international routes borrow the curve shape from the nearest busy routes, anchored to the route's own price level. It reflects current fares and is refreshed monthly.

Are overnight (red‑eye) flights available from Toronto to St. Louis?

No overnight or red-eye flights operate from Toronto to St. Louis — there are no nonstop red-eyes, and no connecting itinerary has an overnight long leg on this route.
Methodology
Red-eye flights are identified from scheduled local departure and arrival times and block times in our flight-schedule database — built from published airline timetables and official schedule data, including U.S. Department of Transportation records for domestic routes. A flight counts as a red-eye when it departs in the afternoon or evening (3 p.m. or later local time) or in the early hours before 4 a.m., and is in the air at some point between midnight and 4 a.m. local time at both its departure airport and its arrival airport. An evening flight that lands before midnight at its destination is never counted, nor is a morning departure or a daytime long-haul that reaches the next calendar date only because of time zones. Each red-eye is labelled with its timing (for example, overnight and landing the next morning, or late-night and landing after midnight). For connecting itineraries the same rule is applied to the longer leg, from one representative day's flight search.

Which airlines usually operate this route from Toronto to St. Louis?

Air Canada operates the non-stop route from Toronto to St. Louis, with two daily departures — at 12:55 and 18:55 — totaling 14 flights per week. The typical median fare on Air Canada for this route is around $878. No other carriers are currently scheduled non-stop between Toronto and St. Louis.
Methodology
Airlines and weekly frequencies come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a typical fare is shown for a carrier, it is the median of the real fares Priceline users found on this route in the last 72 hours.

Which airport should I use in St. Louis?

St. Louis Lambert International Airport is the only commercial airport serving St. Louis. It is about 14 miles northwest of downtown and the Gateway Arch, with direct light rail access to the city centre.

How do I get to Pearson Intl Airport from the city center?

From downtown Toronto, the Union Pearson Express train is the fastest and most popular way to reach Pearson Intl Airport, covering the distance to Terminal 1 in about 25 minutes. Public TTC buses provide a cheaper alternative, with express routes reaching the airport in roughly 45 minutes. Ride-share services like Uber and taxis are readily available and take about 28 minutes, while driving yourself is possible with on-site parking. The train offers the best balance of speed and convenience, while buses are the most budget-friendly.
References

Are there hotels or sleeping facilities at St. Louis airport?

St. Louis Lambert International Airport does not have a hotel directly connected to the terminals, but several hotels are located within a short drive, including the Marriott St. Louis Airport, Wingate by Wyndham, Drury Inn, Pear Tree Inn, Hampton Inn, Hilton, Hyatt Place, and Holiday Inn Express & Suites, with distances ranging from 0.3 to 1 mile from the airport. Many of these nearby hotels offer complimentary airport shuttle service, and courtesy phones near baggage claim can be used to contact them for pickup.
References

What facilities and services are available to travelers at St. Louis Lambert International Airport?

St. Louis Lambert International Airport has free Wi-Fi in 4-hour sessions via the Boingo network, with extra time at $7.95 per day, and mobile device charging points are available in gate areas. ATMs are located throughout the airport, including airside at Concourse A Gate A10, Concourse C Gate C15, and Terminal 2 Gate E20, and a US Bank branch in Terminal 1 near the Concourse C security checkpoint offers full-service banking and currency exchange on weekdays. Interfaith chapels are available for quiet reflection in Terminal 1 near Exit Door 11 and Terminal 2 near Gate E40, and Family Assist rooms near restrooms serve as baby-care facilities. A children's play area called the St. Louis International Play Port is located near Gate C3, operated by The Magic House St. Louis Children's Museum. Art exhibits rotate throughout the terminals, and service animal relief areas are provided near Gate A16 and at exterior locations in both terminals. Duty-free shops are not available, and showers are unavailable.
References

Are there accessible services or children's facilities at the Toronto and St. Louis airports?

At Toronto Pearson International Airport, passengers needing mobility help can use the free in-terminal shuttle after security by looking for the navy “Wait here for mobility assistance” signs, and curbside assistance is pre-arranged through your airline at least 48 hours before the flight. Accessible drop-off zones with tactile walking strips and Braille signage are located at Terminal 1 Posts 9, 21, and 37 and Terminal 3 Posts 17 and 29. At Lambert–St. Louis International Airport, there is an Information and Paging Booth open daily from 7am to 11pm (call 314-890-1333) for assistance, and the airport offers wheelchair assistance, accessible restrooms, elevators, and service animal relief areas. Travelers can also book a Meet & Assist service at St. Louis for domestic arrivals, where a greeter meets you at the gate and helps with baggage.
References

What aircraft are typically used on flights from Toronto to St. Louis?

Air Canada currently operates the nonstop route from Toronto to St. Louis with Bombardier CRJ-900 aircraft. These are the aircraft typically used on this route.
Methodology
Aircraft types come from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). For U.S. routes the type is grounded in the tail number that actually operated the flight; elsewhere it comes from the airline's filed equipment code. Where the source does not commit to a specific variant we name the aircraft family (for example Airbus A320 family) rather than guess, and where no reliable type is on file the aircraft is omitted rather than estimated. Types describe typical scheduled equipment and can vary with seasonal or day-of-week assignments and last-minute swaps.

Which airline alliances serve flights from Toronto to St. Louis?

Air Canada is the airline currently scheduled nonstop between Toronto and St. Louis, with two daily flights, and it belongs to Star Alliance. Other alliances could serve the route via connections, but Air Canada (Star Alliance) is the nonstop carrier on this route.
Methodology
Airlines and weekly frequencies are compiled from our flight-schedule database, which combines published airline timetables, U.S. government schedule data from the Bureau of Transportation Statistics (BTS), and observed flight operations from the EUROCONTROL/OpenSky Open Performance Data Initiative (OPDI). We count each operating carrier's scheduled weekly departures and the days it flies; where there is no nonstop service, connecting carriers are identified by linking scheduled nonstop segments through common hub airports. Where a median fare is shown for a carrier, it reflects the real fares Priceline users found on this route in the last 72 hours.

What are the best airport lounge options when departing from Toronto?

When departing from Toronto Pearson, the best lounge options depend on your terminal and airline. Air Canada's Maple Leaf Lounge in Terminal 1 offers a self-service bar with Canadian and international beers on tap, two spacious shower suites, and a business center with work desks and a conference room. Plaza Premium Lounges are available in both Terminal 1 and Terminal 3, with locations for domestic, transborder, and international departures, and include amenities like premium food, showers, Wi-Fi, and flight monitors. The American Airlines Admirals Club in Terminal 3 near the duty-free shops provides complimentary food and drinks, a full-service bar, and free Wi-Fi. A KLM Crown Lounge is also located in Terminal 3 for international non-USA departures.
References

Are same‑day changes or standby possible on this route?

Same‑day changes and standby depend on the airline and fare class; flexible tickets and premium cabins generally allow them, while Basic Economy usually does not.