Cheap flights from San Francisco to Montreal from $123

The cheapest month to fly to Montreal from San Francisco is in April. Flight prices, which tend to average around $448, are often lower during this time because this is during the off-season. If you are unable to visit Montreal during the month of April, then departing from San Francisco during the month September is also very affordable. Most momondo users find prices during this month for around $461.

The cheapest day to depart from San Francisco to Montreal is on a Wednesday when prices can be found for as low as $747. Flights from San Francisco to Montreal on a Saturday will generally be more expensive and average around $903. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our most recent data shows that the best time of day to fly to Montreal is in the evening. Flights from San Francisco to Montreal during this time can be as low as $576. In the morning is when there is more demand to fly to Montreal, so prices are often more expensive at around $843 per ticket.

Fly from San Francisco to Montreal Pierre Elliott Trudeau Intl for the best San Francisco - Montreal flight prices

You are more likely to see cheaper flights to Montreal from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal for around $535 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal from San Francisco for as low as $404 on momondo.

There are 4 cabin classes available to choose from on San Francisco to Montreal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 16% on your flight if you consider stops on a San Francisco to Montreal flight.

As of February 2026, prices for San Francisco to Montreal flights are approximately 39% cheaper when compared to flights at the same time last year.

WestJet and Porter Airlines are the most popular carriers operating from San Francisco to Montreal

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Montreal from San Francisco according to our data. Air Canada is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Montreal. Keep in mind that there are 4 different airlines that fly to Montreal on a routine basis, so you have a few additional options to choose from.

Toronto (YYZ) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average round-trip price of $529.

Flights connecting via Chicago (ORD) have the shortest average one-way travel time: 7h 57m.

Chicago (ORD) has the shortest average layover time for this route: 1h 26m.

The number of flights available between San Francisco and Montreal is 3 per day as of February 2026. The most frequent departure time is 8:00AM, with 100% of daily flights leaving at noon.

The number of flights available between San Francisco and Montreal is 27 per week as of February 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.