Q: How much does it cost to fly round-trip from Montreal to San Francisco?

Airfare is below average for this route at the moment. Montreal to San Francisco flights typically cost between C$ 631 and C$ 917 in January. The cheapest round-trip price found within the last 3 days was C$ 535 on WestJet (18 Jan-22 Jan).

Question 1

How often are flights from Montreal to San Francisco delayed?

Accepted Answer

About 17% of weekly flights between Montreal and San Francisco have experienced delays in the past year, with the average delay time being 140 minutes.

Question 2

What’s the top layover airport for flights from Montreal to San Francisco?

Accepted Answer

Toronto (YYZ) – chosen by Cheapflights users on 95% of one-stop itineraries from Montreal to San Francisco on Cheapflights.

Question 3

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Thursday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Question 4

Which airline has the best punctuality record on Montreal to San Francisco flights?

Accepted Answer

Over the past year, Air Canada has had the lowest number of delays on this route, with just 15% of flights being delayed.

Question 5

What’s the cheapest layover airport for flights from Montreal to San Francisco?

Accepted Answer

Toronto (YYZ) is the most affordable 1-stop option, with an average round-trip price of C$ 528.

Question 6

How much does it cost to fly round-trip from Montreal to San Francisco?

Accepted Answer

Airfare is below average for this route at the moment.Montreal to San Francisco flights typically cost between C$ 631 and C$ 917 in January.
The cheapest round-trip price found within the last 3 days was C$ 535 on WestJet (18 Jan-22 Jan).

Question 7

Which airport typically offers the quickest layover for flights from Montreal to San Francisco?

Accepted Answer

Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 1h 33m.

Question 8

What is the most punctual flight time for Montreal to San Francisco flights?

Accepted Answer

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

Question 9

What’s the fastest layover option from Montreal to San Francisco?

Accepted Answer

Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 8h 49m.

Question 10

How long is the flight from Montreal to San Francisco?

Accepted Answer

Airlines like WestJet, Delta, and United Airlines fly from Montreal to San Francisco in about 9h 38m. The time it takes to get you to your destination can typically vary by up to 22h 47m. Montreal and San Francisco are separated by a distance of 4073 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

Question 11

What are the cheapest airlines flying from Montreal to San Francisco round-trip?

Accepted Answer

According to our current data, American Airlines (C$ 220), Porter Airlines (C$ 320), and WestJet (C$ 339) offers the cheapest pricing from Montreal to San Francisco. You may be able to fly from Montreal to San Francisco for 62% less than the average price by searching for these airlines.

Question 12

What are the cheapest airlines to fly from Montreal to San Francisco one-way?

Accepted Answer

The cheapest airlines for a one-way flight from Montreal to San Francisco are Air Canada (C$ 339), United Airlines (C$ 340), and Delta (C$ 340).

Question 13

How far ahead should I book a flight from Montreal to San Francisco?

Accepted Answer

To ensure you get the cheapest price possible for a flight from Montreal to San Francisco, you should look to book at least 49 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Question 14

What is the cheapest month to book a flight from Montreal to San Francisco?

Accepted Answer

Currently, April is the cheapest month in which you can book a flight from Montreal to San Francisco (average of C$ 310). Flying from Montreal to San Francisco in October is currently the most expensive (average of C$ 412). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 15

What is the cheapest day to fly from Montreal to San Francisco?

Accepted Answer

Travelers seeking maximum savings on their Montreal to San Francisco flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 16

Weekly flight availability from Montreal to San Francisco

Accepted Answer

The most flights from YMQ to SFO are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

Question 17

E

Accepted Answer

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 mm per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Question 18

E

Accepted Answer

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Question 19

What are the cheapest flights from Montreal to San Francisco?

Accepted Answer

While on average a flight from Montreal to San Francisco is generally C$ 898, our data shows the cheapest flight currently is C$ 390. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Francisco), you can expect to pay C$ 411 for that flight.

Question 20

What are the most reliable airlines from Montreal to San Francisco?

Accepted Answer

No one likes to see their flight delayed. When booking a flight from Montreal to San Francisco consider choosing United Airlines (79%), Air Canada (74%) or Air New Zealand (74%) as they are the most reliable in getting you off to your destination on time.

Question 21

What are the most popular airlines that fly from Montreal to San Francisco?

Accepted Answer

Air Canada, Porter Airlines and United Airlines are the most popular airlines when flying from Montreal to San Francisco.

Question 22

What is the cheapest time of day to fly from YMQ to SFO?

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from Montreal to San Francisco at noon. If you’re flexible enough to do this you can expect to save up to 65% on your trip compared to booking a flight in the evening.

Question 23

What airport do you fly into for flights to San Francisco from Montreal?

Accepted Answer

Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Montreal. On average, San Francisco has 4 inbound flights from Montreal per day from 6 airlines. San Francisco is conveniently located just 19.0 km from San Francisco’s city centre.

Question 24

Can I find deals for flights from Montreal to San Francisco that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Montreal to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 25

How can I find direct flights from Montreal to San Francisco?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to San Francisco.

Question 26

Can I find deals for business class flights from Montreal to San Francisco?

Accepted Answer

Yes. Cheapflights offers flight deals from Montreal to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 27

How does Cheapflights help users find flights from Montreal to San Francisco?

Accepted Answer

Deals for Montreal to San Francisco flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Question 28

Why should you use Cheapflights to find cheap flight tickets from Montreal to San Francisco?

Accepted Answer

Millions of users choose and trust Cheapflights to book the best flight deals from Montreal to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Question 29

Can Cheapflights find flights from Montreal to San Francisco with no change fees?

Accepted Answer

Cheapflights does show flights with no change fees to all users. To see these options for flights from Montreal to San Francisco, users can toggle the no change fees filter when performing a flight search.

Question 30

Can Cheapflights notify me if prices for flights from Montreal to San Francisco become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Montreal to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	C$ 535
One-way from	C$ 332
Popular in	December
Cheapest in	February
Average price	C$ 660
Good round-trip deal	C$ 869 or less
Good one-way deal	C$ 532 or less

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	CheapestC$ 220	AverageC$ 626	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Porter Airlines	CheapestC$ 320	AverageC$ 405	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
WestJet	CheapestC$ 339	AverageC$ 399	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
United Airlines	CheapestC$ 440	AverageC$ 652	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 464	AverageC$ 650	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Delta	CheapestC$ 524	AverageC$ 626	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

Cheap flights from Montreal to San Francisco from C$ 332

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Montreal to San Francisco are usually found in February or May, booked 49 days in advance, depart on a Friday or Thursday and return on a Friday

Find flight deals from Montreal to San Francisco

Cheapest flights from Montreal to San FranciscoExplore the most affordable flight options available from Montreal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 November 2025.

Explore the most affordable flight options available from Montreal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 November 2025.

Cheap flight deals from Montreal to San Francisco

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Best time to book a flight from Montreal to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Montreal with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Montreal to San Francisco

How far ahead should I book a flight from Montreal to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to San Francisco. Price data was last updated on 21 November 2025.

What is the cheapest month to book a flight from Montreal to San Francisco?

What is the cheapest time of day to fly from YMQ to SFO?

Find hourly flight availability from Montreal to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 November 2025.

What is the cheapest day to fly from Montreal to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Montreal to San Francisco. Price data was last updated on 2 November 2025.

Weekly flight availability from Montreal to San Francisco

How much does it cost to fly round-trip from Montreal to San Francisco?

What’s the top layover airport for flights from Montreal to San Francisco?

Share of one-stop round-trip flights from Montreal to San Francisco chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Montreal to San Francisco?

Average round-trip fare for 1-stop flights from Montreal to San Francisco, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Montreal to San Francisco?

Shortest average travel time for 1-stop one-way flights from Montreal to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Montreal to San Francisco?

Average layover duration for 1-stop one-way flights from Montreal to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

How often are flights from Montreal to San Francisco delayed?

What is the most punctual flight time for Montreal to San Francisco flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Montreal to San Francisco flights?

Reviews of airlines servicing San Francisco

Read through reviews of airlines operating flights from Montreal to San Francisco, such as Porter Airlines,United Airlines, andWestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Montreal to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to San Francisco from Montreal?

How long is the flight from Montreal to San Francisco?

What are the cheapest airlines flying from Montreal to San Francisco round-trip?

What are the cheapest airlines to fly from Montreal to San Francisco one-way?

What are the most reliable airlines from Montreal to San Francisco?

What are the cheapest flights from Montreal to San Francisco?

Can I find deals for flights from Montreal to San Francisco that include hotel bookings?

How can I find direct flights from Montreal to San Francisco?

Can I find deals for business class flights from Montreal to San Francisco?

What is the cheapest month to book a flight from Montreal to San Francisco?

Travelling to a place near San Francisco?

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Fly from Montreal to San Francisco on these airlines

Choose from the following airlines for your flight from Montreal to San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 26 November 2025.

Top 6 airlines flying from Montreal to San Francisco

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How does Cheapflights help users find flights from Montreal to San Francisco?

Why should you use Cheapflights to find cheap flight tickets from Montreal to San Francisco?

Can Cheapflights find flights from Montreal to San Francisco with no change fees?

Can Cheapflights notify me if prices for flights from Montreal to San Francisco become cheaper?

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Cheapest flights from Montreal to San Francisco
Explore the most affordable flight options available from Montreal to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 November 2025.