Cheap flights from St. Louis, MO to Toronto
Flights starting at £221. Choose between Frontier Airlines, United Airlines, or Porter Airlines to find the best price.
One search, all the flights
We find you the best flight deals and travel hacks so that you can choose how to book.
Rise above all travel anxieties
With the Kiwi.com Guarantee we have your back with whatever happens.
Trusted by millions
Join over 10 million yearly travellers booking with ease.
How much do flights to Toronto cost?
Cheapest one-way trip | £221 |
|---|---|
Cheapest nonstop round-trip | £269 |
Cheapest round-trip | £486 |
Nonstop flights in December | £269 – £389 |
Most popular airline | Frontier Airlines |
Key info about flying to Toronto
Great deals from St. Louis to Toronto
Prices updated:
Prices updated:
Not happy with the results? Try some of our useful filters
Search by stops
Search by price
Search by departure date
Weekly direct flights
Discover the top airlines offering direct flights from St. Louis to Toronto in the next month. You’ll find the number of daily direct flights per airline in the chart.
| Airline | Mon 02.12 | Tue 03.12 | Wed 04.12 | Thu 05.12 | Fri 06.12 | Sat 07.12 | Sun 08.12 |
|---|---|---|---|---|---|---|---|
| --- | 1 | 1 | --- | 1 | 1 | 1 | |
| --- | --- | --- | --- | --- | --- | --- | |
| Weekly flights: 5 total | Daily flights: 0.71 average | Most flights: Tuesday 1 flights |
| Airline | Mon 09.12 | Tue 10.12 | Wed 11.12 | Thu 12.12 | Fri 13.12 | Sat 14.12 | Sun 15.12 |
|---|---|---|---|---|---|---|---|
| 1 | --- | 1 | --- | 1 | --- | 1 | |
| --- | 1 | --- | 1 | --- | --- | --- | |
| Weekly flights: 6 total | Daily flights: 0.86 average | Most flights: Monday 1 flights |
| Airline | Mon 16.12 | Tue 17.12 | Wed 18.12 | Thu 19.12 | Fri 20.12 | Sat 21.12 | Sun 22.12 |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| --- | --- | 1 | --- | --- | --- | --- | |
| Weekly flights: 8 total | Daily flights: 1.14 average | Most flights: Monday 1 flights |
| Airline | Mon 23.12 | Tue 24.12 | Wed 25.12 | Thu 26.12 | Fri 27.12 | Sat 28.12 | Sun 29.12 |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| --- | --- | --- | --- | --- | --- | --- | |
| Weekly flights: 7 total | Daily flights: 1 average | Most flights: Monday 1 flights |
Check-in for a flight from St. Louis to Toronto
| Name | Carrier code | IATA Code | Passport needed during booking |
|---|---|---|---|
| Frontier Airlines | FFT | F9 | No |
| United Airlines | UAL | UA | Yes |
| Porter Airlines | POE | PD | No |
| WestJet | WJA | WS | No |
| Spirit Airlines | NKS | NK | No |
Online check-in is not available for these airlines.
Weather in Toronto
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | -1°C | -6°C |
| February | 0°C | -6°C |
| March | 3°C | -2°C |
| April | 9°C | 3°C |
| May | 15°C | 9°C |
| June | 21°C | 14°C |
| July | 25°C | 18°C |
| August | 25°C | 18°C |
| September | 21°C | 15°C |
| October | 14°C | 9°C |
| November | 7°C | 3°C |
| December | 2°C | -1°C |
14 day forecast
Frequently asked questions
Planning a trip? Thanks to our Virtual Interlining algorithm, we offer billions of route combinations between any A and any B in the world by plane, train, and bus. Find the cheapest routes and best deals for you, as well as the best dates on which to travel.
Explore alternative trips
Flights from St. Louis
Flights to Toronto
Popular routes
The nearest countries with flights to Toronto
Here is a list of countries people are flying from
Other destination countries from St. Louis
Here is a list of countries people are flying toAirports near St. Louis
Airports near Toronto
Get more out of Kiwi.com with our mobile application
Find out more about the Kiwi.com app on kiwi.com/mobile . With our app you can search for the best plane connections. The Kiwi.com mobile app offers cheap flights, access to hidden features, travel hacks and special offers.
Download boarding passes
One-click booking
Get exclusive offers and prices
Mobile trip notifications