On this page, you can book flights from St. Louis to Montreal. The 1,570 km flight operates an average of 11 times a week, providing regular service between the USA and Canada.
The route is served by United Airlines and Air Canada. Ticket prices are dynamic, so we recommend checking the price chart for your travel planning, as well as information on how to get to the airport of departure and transportation from the airport of arrival.
The table shows direct flights St. Louis → Montreal on the selected date. The flight takes approximately 2 h 32 min. Regular flights are operated by Air Canada and United Airlines. Departures from Lambert-St. Louis International Airport airports, arrivals at Montreal-Pierre Elliott Trudeau International Airport and St. Hubert Airport.
For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.
Below is a calendar of the lowest flight ticket prices for St. Louis — Montreal by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from AED 861 in ,, and the most expensive are around AED 1,287 in n. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.
St. Louis → Montreal, average one-way price
| Month | Average price | Level | Month | Average price | Level | Month | Average price | Level |
|---|---|---|---|---|---|---|---|---|
| Jan | AED 1,088 | low | May | AED 1,275 | medium | Sep | AED 1,275 | medium |
| Feb | AED 1,107 | low | Jun | AED 1,424 | high | Oct | AED 1,237 | medium |
| Mar | AED 1,126 | low | Jul | AED 1,540 | high | Nov | AED 1,203 | low |
| Apr | AED 1,237 | medium | Aug | AED 1,501 | high | Dec | AED 1,352 | high |
Some values are estimated based on seasonality.
Warm weather in Montreal peaks in July with an average temperature of 26.6°C, while the coldest month is January, when temperatures drop to -12.7°C. The highest rainfall occurs in August, whereas September features the driest weather with 21 sunny days.
The most budget-friendly flights are available in July, with prices starting AED 878. Peak ticket prices are recorded in March, when the minimum fare for the route starts AED 1,287.
September seems to be the optimal choice in terms of the balance between weather conditions and cost, offering comfortable temperatures and moderate prices. It is best to avoid traveling in January due to severe frosts, unless your goal is a winter vacation.
Two main airlines operate flights on the route from St. Louis to Montreal: United Airlines and Air Canada. On average, there are about 11 flights per week, primarily consisting of options with layovers in major hubs. A detailed schedule, information on direct flights, and flight details from each carrier are provided in the interactive list below.
Flights St. Louis — Montreal depart from Lambert-St. Louis International Airport and arrive at Montreal-Pierre Elliott Trudeau International Airport and St. Hubert Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.
The distance between the cities is about 1,570 km. The flight time for a direct flight is approximately 2 hours 15 minutes, but most flights are operated with one layover, which increases the total travel time.
Regular flights between St. Louis and Montreal are provided by United Airlines and Air Canada. A full list of available flights is presented on this page.
The availability of non-stop flights depends on the seasonal schedule. In most cases, the route involves a connection at major hub airports in the USA or Canada.
Ticket prices change constantly depending on demand and the departure date. You can find the current minimum for the coming months in the low price calendar above.
Flights from St. Louis arrive at Montréal-Trudeau International Airport (YUL), which is the city's main gateway.
Where travelers fly most — pick a route and check prices
