Saint Louis (STL) to Toronto (YYZ) flights
One airline flies nonstop from Saint Louis (STL) to Toronto (YYZ): Air Canada. The two airports are 654 miles (1,053 km) apart. Air Canada is in Star Alliance. There are also 18 ways to fly it with one stop, through Detroit, Cleveland and Chicago and more.
Airlines flying nonstop from STL to YYZ
- Air CanadaStar Alliance · bookable with 12 programsWho books it
Book STL to YYZ with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks Air Canada
- Air New Zealand AirpointsBooks Air Canada
- ANA Mileage ClubBooks Air Canada
- Avianca LifeMilesBooks Air Canada
- Emirates SkywardsBooks Air Canada
- EVA Air Infinity MileageLandsBooks Air Canada
- Lufthansa Miles & MoreBooks Air Canada
- Singapore Airlines KrisFlyerBooks Air Canada
- TAP Miles&GoBooks Air Canada
- Thai Royal Orchid PlusBooks Air Canada
- Turkish Airlines Miles&SmilesBooks Air Canada
- United MileagePlusBooks Air Canada
STL to YYZ with one stop
18 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Cleveland (CLE)Southwest Airlines, then Air Canada
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Columbus (CMH)Southwest Airlines, then Air Canada
- Via Pittsburgh (PIT)Southwest Airlines, then Air Canada
- Via Nashville (BNA)Southwest Airlines, then Air Canada and WestJet
- Via Dulles (IAD)United Airlines the whole way
- Via Washington (DCA)American Airlines the whole way
- Via Minneapolis (MSP)Delta Air Lines the whole way
- Via Philadelphia (PHL)American Airlines the whole way
- Via Charlotte (CLT)American Airlines the whole way
- Via Raleigh/Durham (RDU)Southwest Airlines, then Air Canada
- Via New York (EWR)United Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via New York (LGA)American Airlines and Delta Air Lines the whole way+1
STL to YYZ: common questions
Which airlines fly nonstop from STL to YYZ?
Air Canada (Star Alliance) flies nonstop from Saint Louis (STL) to Toronto (YYZ).
How far is Saint Louis from Toronto by plane?
Saint Louis (STL) and Toronto (YYZ) are 654 miles (1,053 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book STL to YYZ award flights?
12 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, Lufthansa Miles & More, Singapore Airlines KrisFlyer and 4 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does STL to YYZ cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for STL to YYZ with taxes and fees.
Where can I connect between Saint Louis and Toronto?
The most direct connections are through Detroit (DTW), Cleveland (CLE), Chicago (ORD), Columbus (CMH) and Pittsburgh (PIT). On 11 of them the same airline flies both flights, for example Delta Air Lines through Detroit.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.