Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco from $180

If you aren’t able to travel to San Francisco during the month of April, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $367.

The cheapest day to depart from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco is on a Friday when prices can be found for as low as $471. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $875.

Our data shows that the cheapest Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $459. Flights in the afternoon are often more expensive with an average ticket price of $749.

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

You are more likely to see cheaper flights to San Francisco from Montreal Pierre Elliott Trudeau Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $429 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Montreal Pierre Elliott Trudeau Intl Airport for as low as $357 on momondo.

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

United Airlines, Delta, and WestJet are the most popular carriers operating from Montreal Pierre Elliott Trudeau Intl to San Francisco

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to San Francisco from Montreal Pierre Elliott Trudeau Intl Airport according to our data. Air Canada is the first choice among our users, with 69% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 3 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Historically, on average around 20% of flights between Montreal and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 148 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, Air Canada have had the least number of delays on this route over the last 12 months; with about 19% of their flights experiencing any sort of delay.

As of March 2026, 3 flights take off from Montreal Pierre Elliott Trudeau Intl Airport and land in San Francisco each day. The most common flight departure time for this route is 5:00PM, with 100% of daily flights taking off in the afternoon.

As of March 2026, there are 26 flights per week flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.