St. Louis — flights from Toronto to St. Louis

Flight Deals from Toronto to St. Louis from $315

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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 12
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
American AirlinesAmerican Airlinesfound Oct 14
11/18/26
11:36 am
YYZToronto Pearson Airport
8h 46mORDChicago O Hare Airport
11/18/26
7:22 pm
STLSt Louis Lambert International Airport
11/25/26
7:26 am
STLSt Louis Lambert International Airport
9h 14mORDChicago O Hare Airport
11/25/26
5:40 pm
YYZToronto Pearson Airport
$576
American AirlinesAmerican Airlinesfound Oct 14
11/18/26
3:15 pm
YYZToronto Pearson Airport
9h 44mORDChicago O Hare Airport
11/18/26
11:59 pm
STLSt Louis Lambert International Airport
11/25/26
7:26 am
STLSt Louis Lambert International Airport
9h 14mORDChicago O Hare Airport
11/25/26
5:40 pm
YYZToronto Pearson Airport
$576
American AirlinesAmerican Airlinesfound Oct 14
11/18/26
11:36 am
YYZToronto Pearson Airport
8h 46mORDChicago O Hare Airport
11/18/26
7:22 pm
STLSt Louis Lambert International Airport
11/25/26
6:00 am
STLSt Louis Lambert International Airport
10h 40mORDChicago O Hare Airport
11/25/26
5:40 pm
YYZToronto Pearson Airport
$576
Flight plus hotel
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Book a flight & hotel together for extra savings.

On average save $240 per traveler

United AirlinesUnited Airlinesfound Oct 14
11/18/26
2:35 pm
YYZToronto Pearson Airport
8h 5mORDChicago O Hare Airport
11/18/26
9:40 pm
STLSt Louis Lambert International Airport
11/25/26
4:05 pm
STLSt Louis Lambert International Airport
2h 0m
11/25/26
7:05 pm
YYZToronto Pearson Airport
$685
Air CanadaAir Canadafound Oct 12
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
American AirlinesAmerican Airlinesfound Oct 14
11/18/26
3:15 pm
YYZToronto Pearson Airport
9h 44mORDChicago O Hare Airport
11/18/26
11:59 pm
STLSt Louis Lambert International Airport
11/25/26
6:00 am
STLSt Louis Lambert International Airport
10h 40mORDChicago O Hare Airport
11/25/26
5:40 pm
YYZToronto Pearson Airport
$576
United AirlinesUnited Airlinesfound Oct 14
11/18/26
8:20 am
YYZToronto Pearson Airport
8h 23mORDChicago O Hare Airport
11/18/26
3:43 pm
STLSt Louis Lambert International Airport
11/25/26
4:05 pm
STLSt Louis Lambert International Airport
2h 0m
11/25/26
7:05 pm
YYZToronto Pearson Airport
$685
Air CanadaAir Canadafound Oct 12
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
American AirlinesAmerican Airlinesfound Oct 14
11/18/26
11:36 am
YYZToronto Pearson Airport
8h 46mORDChicago O Hare Airport
11/18/26
7:22 pm
STLSt Louis Lambert International Airport
11/25/26
5:00 am
STLSt Louis Lambert International Airport
11h 40mORDChicago O Hare Airport
11/25/26
5:40 pm
YYZToronto Pearson Airport
$576

Top Deals on flights from Toronto to St. Louis

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

United AirlinesUnited Airlines

Nov 1

7:26 pm
YYZToronto Pearson Airport
21h 17m1 stop · ORD

Nov 2

3:43 pm
STLSt Louis Lambert International Airport
Search More

as low as

$315

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

American AirlinesAmerican Airlines

Nov 1

11:34 am
YYZToronto Pearson Airport
24h 19m1 stop · ORD

Nov 2

10:53 am
STLSt Louis Lambert International Airport
Search More

as low as

$376

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

United AirlinesUnited Airlines

Nov 1

8:35 am
YYZToronto Pearson Airport
4h 35m1 stop · ORD

Nov 1

12:10 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

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

United AirlinesUnited Airlines

Nov 1

10:53 am
YYZToronto Pearson Airport
4h 41m1 stop · ORD

Nov 1

2:34 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

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

United AirlinesUnited Airlines

Nov 1

5:55 pm
YYZToronto Pearson Airport
4h 45m1 stop · ORD

Nov 1

9:40 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

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

United AirlinesUnited Airlines

Nov 1

6:45 am
YYZToronto Pearson Airport
4h 47m1 stop · ORD

Nov 1

10:32 am
STLSt Louis Lambert International Airport
Search More

as low as

$381

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

United AirlinesUnited Airlines

Nov 1

3:35 pm
YYZToronto Pearson Airport
4h 48m1 stop · ORD

Nov 1

7:23 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

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

United AirlinesUnited Airlines

Nov 1

7:26 pm
YYZToronto Pearson Airport
4h 58m1 stop · ORD

Nov 1

11:24 pm
STLSt Louis Lambert International Airport
Search More

as low as

$381

Toronto, CA (YTO) - 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 (YTO) - 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

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?

Midday (12pm - 2pm) is the cheapest time of day to fly from Toronto to St. Louis. At $698 it is 3% cheaper than the average time. Afternoon (2pm - 5pm) is the most expensive time, 5% above average.

$708Morning$698Midday$751Afternoon$712Evening
Show the data
When is the best time of day to fly?
Time of dayAverage fare
Morning$708
Midday$698
Afternoon$751
Evening$712

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

Share of fares in each price range.

4%$550to $6001%$600to $65010%$650to $70051%$700to $75026%$750to $8001%$800to $8507%$850and up
Show the data
What do round-trip flights from Toronto to St. Louis cost?
Price rangeShare of fares
$550 to $6004%
$600 to $6501%
$650 to $70010%
$700 to $75051%
$750 to $80026%
$800 to $8501%
$850 and up7%

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 the typical nonstop flight taking 2 hours and 7 minutes. The return leg is slightly shorter at 1 hour and 57 minutes, a difference of under twenty minutes that reflects prevailing winds.
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 between Toronto (YYZ) and St. Louis, with 14 flights a week — two daily departures, one in the early afternoon and one in the evening. It is the only airline currently scheduled non-stop on this route, and the service runs every day of the week.
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?

Getting from Lambert Airport to downtown St. Louis is straightforward, with the MetroLink light rail running directly from the airport to the city center and operating frequently, every 7 to 15 minutes. Taxis run about $30–45 to downtown, while ride shares like Uber and Lyft are available curbside at both terminals and are the most-used option for most travelers. Rental cars from Alamo, Avis, Budget, Dollar, Enterprise, Hertz, National, and Thrifty are also available at the on-site Rental Car Center via a free shuttle. Hotel shuttles serve nearby properties, and Greyhound bus service picks up just south of Terminal 1. The fastest option is typically a taxi or ride share, which takes about 15–20 minutes on I-70, though MetroLink offers the most affordable and reliable alternative.
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, the cheapest stretch of the year. The cheapest months overall are January and September at about $291, with October close behind at $292. The most expensive period is late December, when average fares reach $350, and December as a whole is the priciest month at roughly $335.
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, book 4 to 6 weeks before departure to lock in the best fares, which average around $246. The sweet spot is roughly 30 to 35 days out, when prices bottom out near $245, while booking 6 months ahead can cost over $380. During summer and holiday peaks, fares climb higher across all lead times, so aim for the earlier side of that window when demand is elevated.
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 nonstop flights from Toronto to St. Louis, with two daily departures from Toronto Pearson at 12:55 and 18:55. The route runs every day of the week, for a total of 14 weekly flights. Typical fares on Air Canada for this route are around $878. Air Canada is a Star Alliance member.
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 has one commercial airport, St. Louis Lambert International Airport, located about 14 miles northwest of downtown. It serves all major airlines for the region, including Southwest, American, Delta and United, and is the only airport you need for flights to the city.

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

The fastest and most popular way from downtown Toronto to Toronto Pearson International Airport is the Union Pearson Express train, which reaches Union Station in about 25 minutes. Public buses like the TTC's 900 Airport Express also connect from Kipling Station in roughly 45 minutes, and there are overnight routes for late departures. Ride-share options such as Uber take about 28 minutes from the city center, while taxis are readily available at the arrivals level. Driving and parking are possible at the airport, with rental cars and private shuttles providing additional flexibility.
References

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

There are several hotels near St. Louis Lambert International Airport, including the Marriott St. Louis Airport, Wingate by Wyndham, Drury Inn Airport, Pear Tree Inn, Hampton Inn, Hilton St. Louis Airport, Hyatt Place, and Holiday Inn Express & Suites. Many of these hotels offer airport shuttle service, and courtesy phones near baggage claim can be used to contact them for pick-up. If you prefer to sleep inside the terminal, armrest-free seating can be found in Terminal 2 and Concourse C, though the airport can be quite cold overnight.
References

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

St. Louis Lambert International Airport offers free Wi-Fi in 4-hour sessions via the Boingo network, with additional time costing $7.95 per day, and mobile charging points are available in gate areas. ATMs are located throughout the airport, and a US Bank branch in Terminal 1 offers full-service banking and currency exchange. Interfaith chapels are available in Terminal 1 landside and Terminal 2 airside, and Family Assist rooms near restrooms serve as baby-care facilities. A transportation-themed children's play area, the St. Louis International Play Port, is near Gate C3, and permanent and rotating art exhibits are displayed throughout the terminals. Service animal relief areas are located near Gate A16 and at exterior areas of both terminals.
References

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

At Toronto Pearson International Airport, passengers with mobility needs can use a free in-terminal shuttle after security, with pickup at navy "Wait here for mobility assistance" signs; curbside assistance requires contacting your airline at least 48 hours before the flight (Air Canada passengers call 416-776-2700). At Lambert–St. Louis International Airport, travelers with disabilities have access to wheelchair assistance, accessible restrooms, elevators, service animal relief areas, and TSA lanes for persons with disabilities; meet-and-assist services are available for domestic arrivals and departures through Fastrack VIP. To arrange assistance at either airport, contact your airline before the flight.
References

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

Air Canada operates the nonstop Toronto–St. Louis route using Bombardier CRJ-900 aircraft. These are regional jets flown from Toronto Pearson, and they are the only aircraft type currently scheduled 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 only airline currently scheduled non-stop from Toronto (YYZ) to St. Louis, operating twice daily. That makes Star Alliance the sole alliance serving the route non-stop, with Air Canada as its member carrier; other alliances may reach St. Louis via connections, but no other airline flies the route directly right now.
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?

Toronto Pearson International Airport offers a range of lounge options across Terminal 1 and Terminal 3, including Air Canada Maple Leaf Lounges, Plaza Premium Lounges, an Air Canada Café, an American Airlines Admirals Club, and a KLM Crown Lounge. The Air Canada Maple Leaf Lounge in Terminal 1’s international concourse features two spacious shower suites, a self-service bar with Canadian and international beers, wines, and spirits, and a fully-equipped business center with work desks, a copier/fax/printer, and a conference room available on request. The Plaza Premium Lounge in Terminal 3’s international departures area offers premium food, beer and wine, showers, conference rooms, children’s rooms, Wi-Fi, TVs, flight monitors, and internet terminals, with spirits and liquor available for an additional charge. The American Airlines Admirals Club, located near the duty-free shops in Terminal 3, provides complimentary food and drinks, a full-service bar, and complimentary Wi-Fi, though conference rooms are not available. Access to these lounges is typically available to eligible business or first class ticket holders, elite status members, or those with eligible credit cards such as the American Express Platinum Card, which offers lounge passes and subscriptions.
References

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

Same-day changes and standby are possible on this route with most carriers, but policies vary by airline and fare, with flexible tickets and premium cabins offering the most options.