What is the cheapest airline that flies from Montreal to San Francisco?

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

Which airlines fly to San Francisco?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to San Francisco from Montreal according to our data. Air Canada is the first choice among our users, with 52% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 6 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Montreal to San Francisco?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 8h 35m.

Which airport is the most popular layover for flights between Montreal and San Francisco?

Toronto (YYZ) was the most common stop: 89% of momondo users choosing one-stop flights on this route connected there.

How many flights depart from Montreal to San Francisco on average per day?

4 flights are operational daily from Montreal to San Francisco as of November 2025. The most popular departure time for this route is 5:00p.m., with 100% of flights per day taking off in the afternoon.

How many flights depart from Montreal to San Francisco on average per week?

28 flights are operational weekly from Montreal to San Francisco as of November 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

Which layover airport offers the lowest fares from Montreal to San Francisco?

Flights via Toronto (YYZ) offer the lowest average round-trip price of C$ 440.

Which layover airport has the shortest connection time from Montreal to San Francisco?

Detroit (DTW) has the shortest average layover time for this route: 1h 21m.

When did momondo last update prices for flights from Montreal to San Francisco Airport?

Prices for flights from Montreal to San Francisco Airport are updated daily.

How many operators does momondo search for flights from Montreal to San Francisco Airport?

There are 5 operators available for flights from Montreal to San Francisco Airport as of November 2025.

How old do you have to be to fly from Montreal to San Francisco Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 304 Cheap Flights from Montreal to San Francisco in 2025/26

1 adult

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Find the cheapest flights from Montreal to San Francisco

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Cheap round-trip flights

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6:45 a.m. - 8:03 p.m.YUL-SFO

16h 18m2 stops

10:15 a.m. - 4:27 p.m.SFO-YUL

27h 12m1 stop

C$ 492Multiple Airlines

Find Deal

Thu, 4 Dec - Sat, 6 Dec

6:45 a.m. - 12:40 p.m.YUL-SFO

8h 55m1 stop

10:15 a.m. - 4:27 p.m.SFO-YUL

27h 12m1 stop

C$ 509Multiple Airlines

Find Deal

Wed, 3 Dec - Sat, 6 Dec

7:30 p.m. - 12:10 p.m.YUL-SFO

19h 40m1 stop

1:00 p.m. - 7:05 a.m.SFO-YUL

15h 05m1 stop

C$ 511WestJet

Find Deal

Wed, 4 Mar - Fri, 13 Mar

6:45 a.m. - 12:40 p.m.YUL-SFO

8h 55m1 stop

1:40 p.m. - 12:35 a.m.SFO-YUL

7h 55m1 stop

C$ 531Porter Airlines

Find Deal

Thu, 27 Nov - Sun, 7 Dec

4:15 p.m. - 12:12 p.m.YUL-SFO

22h 57m1 stop

1:00 p.m. - 7:05 a.m.SFO-YUL

15h 05m1 stop

C$ 544WestJet

Find Deal

Mon, 1 Dec - Fri, 5 Dec

6:45 a.m. - 12:40 p.m.YUL-SFO

8h 55m1 stop

1:40 p.m. - 12:35 a.m.SFO-YUL

7h 55m1 stop

C$ 557Porter Airlines

Find Deal

Sat, 6 Dec - Sat, 13 Dec

5:50 p.m. - 9:22 p.m.YUL-SFO

6h 32mdirect

12:00 p.m. - 11:22 p.m.SFO-YUL

8h 22m1 stop

C$ 568Air Canada

Find Deal

Thu, 27 Nov - Thu, 4 Dec

6:00 a.m. - 1:30 p.m.YUL-SFO

10h 30m1 stop

12:00 p.m. - 12:32 a.m.SFO-YUL

9h 32m1 stop

C$ 573Air Canada

Find Deal

Thu, 27 Nov - Thu, 4 Dec

2:13 p.m. - 9:01 p.m.YUL-SFO

9h 48m1 stop

11:20 p.m. - 3:16 p.m.SFO-YUL

12h 56m1 stop

C$ 588United Airlines

Find Deal

Fri, 5 Dec - Fri, 5 Dec

4:45 p.m. - 10:55 p.m.YUL-SFO

9h 10m1 stop

10:52 p.m. - 3:16 p.m.SFO-YUL

13h 24m1 stop

C$ 595United Airlines

Find Deal

Thu, 25 Dec - Sat, 17 Jan

WestJet flights from Montreal to San Francisco

Our best WestJet deals on Montreal to San Francisco flight tickets

WestJet

4 Mar

YUL7:30 p.m.Montreal Pierre Elliott Trudeau Intl

19h 40m

1 stop

SFO12:10 p.m.San Francisco

13 Mar

SFO1:00 p.m.San Francisco

15h 05m

1 stop

YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 511

Find similar

WestJet

1 Dec

YUL4:15 p.m.Montreal Pierre Elliott Trudeau Intl

22h 57m

1 stop

SFO12:12 p.m.San Francisco

5 Dec

SFO1:00 p.m.San Francisco

15h 05m

1 stop

YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 544

Find similar

WestJet

7 Mar

YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl

31h 25m

2 stops

SFO11:10 a.m.San Francisco

15 Mar

SFO1:00 p.m.San Francisco

23h 13m

1 stop

YUL3:13 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 565

Find similar

United Airlines flights from Montreal to San Francisco

Our best United Airlines deals on Montreal to San Francisco flight tickets

United Airlines

5 Dec

YUL2:13 p.m.Montreal Pierre Elliott Trudeau Intl

9h 48m

1 stop

SFO9:01 p.m.San Francisco

5 Dec

SFO11:20 p.m.San Francisco

12h 56m

1 stop

YUL3:16 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 588

Find similar

United Airlines

25 Dec

YUL4:45 p.m.Montreal Pierre Elliott Trudeau Intl

9h 10m

1 stop

SFO10:55 p.m.San Francisco

17 Jan

SFO10:52 p.m.San Francisco

13h 24m

1 stop

YUL3:16 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 595

Find similar

United Airlines

25 Dec

YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl

10h 54m

1 stop

SFO1:54 p.m.San Francisco

31 Dec

SFO6:00 a.m.San Francisco

12h 17m

1 stop

YUL9:17 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 596

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 4/12

6:45 a.m.-8:03 p.m.

2 stops16h 18m

San Francisco

Sat 6/12

10:15 a.m.-4:27 p.m.

1 stop27h 12m

C$ 492

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 3/12

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Sat 6/12

10:15 a.m.-4:27 p.m.

1 stop27h 12m

C$ 509

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

7:30 p.m.-12:10 p.m.

1 stop19h 40m

San Francisco

Fri 13/3

1:00 p.m.-7:05 a.m.

1 stop15h 05m

C$ 511

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 27/11

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Sun 7/12

1:40 p.m.-12:35 a.m.

1 stop7h 55m

C$ 531

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

4:15 p.m.-12:12 p.m.

1 stop22h 57m

San Francisco

Fri 5/12

1:00 p.m.-7:05 a.m.

1 stop15h 05m

C$ 544

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 6/12

6:45 a.m.-12:40 p.m.

1 stop8h 55m

San Francisco

Sat 13/12

1:40 p.m.-12:35 a.m.

1 stop7h 55m

C$ 557

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 27/11

5:50 p.m.-9:22 p.m.

Nonstop6h 32m

San Francisco

Thu 4/12

12:00 p.m.-11:22 p.m.

1 stop8h 22m

C$ 568

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 27/11

6:00 a.m.-1:30 p.m.

1 stop10h 30m

San Francisco

Thu 4/12

12:00 p.m.-12:32 a.m.

1 stop9h 32m

C$ 573

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 5/12

2:13 p.m.-9:01 p.m.

1 stop9h 48m

San Francisco

Fri 5/12

11:20 p.m.-3:16 p.m.

1 stop12h 56m

C$ 588

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 25/12

4:45 p.m.-10:55 p.m.

1 stop9h 10m

San Francisco

Sat 17/1

10:52 p.m.-3:16 p.m.

1 stop13h 24m

C$ 595

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montreal to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from Montreal is in February. Flight prices, which tend to average around C$ 511, are often lower during this time because this is during the off-season. The month of May is another great option to travel to San Francisco, with average flight prices from Montreal averaging around C$ 517.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Montreal to San Francisco is on a Friday. Travellers who choose to depart for San Francisco on a Friday will often find tickets for as low as C$ 1,087. On the other hand, Monday is the most expensive day to depart from Montreal because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,289.

What is the cheapest time of day to depart on your flight to San Francisco?

Flying to San Francisco from Montreal at noon is the least expensive time of day to depart. momondo users have found prices as low as C$ 632 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to San Francisco is in the evening when prices are around C$ 1,796.

What is the cheapest Montreal to San Francisco flight route?

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

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around C$ 584 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 for as low as C$ 521 on momondo.

What cabin class options are available on Montreal to San Francisco flights?

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

Can stopping save me money on Montreal to San Francisco flights?

You could potentially save up to 25% on your flight if you consider stops on a Montreal to San Francisco flight.

How have Montreal to San Francisco flight prices changed over time?

As of November 2025, prices for Montreal to San Francisco flights are approximately 20% cheaper when compared to flights at the same time last year.

When to book flights from Montreal to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Montreal to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Montreal to San Francisco (YMQ to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to San Francisco

Best price found	C$ 408
Fastest flight time	6h 21m
Direct flights	Every day
Airports in San Francisco	1 airport

The best one-way flight to San Francisco from Montreal in the past 72 hours is C$ 408. The best round-trip flight deal from Montreal to San Francisco found on momondo in the last 72 hours is C$ 908.

The fastest flight from Montreal to San Francisco takes 6h 21m

Direct flights go from Montreal to San Francisco every day.

There is 1 airport near San Francisco: San Francisco (SFO)

Search flight deals

How far is Montreal to San Francisco by plane?
The distance between Montreal and San Francisco is about 4080.4 km. In terms of flight time, this usually takes a little over 6h 32m.
When did momondo last update prices for flights from Montreal to San Francisco Airport?
Prices for flights from Montreal to San Francisco Airport are updated daily.
How many operators does momondo search for flights from Montreal to San Francisco Airport?
There are 5 operators available for flights from Montreal to San Francisco Airport as of November 2025.
How old do you have to be to fly from Montreal to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Montreal to San Francisco?
Based on momondo bookings for flights between Montreal and San Francisco, the leading plane model is Boeing 737 MAX 8, making up 64.81% of the total bookings. Other popular models include Airbus A220-300 with 24.16%, Boeing 737 MAX 9 with 4.81%, and De Havilland (Bombardier) DHC-8-400 Dash 8Q with 2.08%.
What is the most popular airline from Montreal to San Francisco?
Based on momondo bookings for flights between Montreal and San Francisco, the leading airline is Air Canada, making up 53% of the total bookings. Other popular airlines include Porter Airlines with 24%, United Airlines with 19%, and WestJet with 5%.

Best airlines flying from Montreal to San Francisco

Compare and see reviews for airlines that fly from Montreal to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom C$ 244	Free Cancellation	Rating 7.2 11,044 reviews	Search American Airlines flights
Porter Airlines	PriceFrom C$ 321	Free Cancellation	Rating 8.0 388 reviews	Search Porter Airlines flights
WestJet	PriceFrom C$ 339	Free Cancellation	Rating 7.2 3,156 reviews	Search WestJet flights
United Airlines	PriceFrom C$ 435	Free Cancellation	Rating 7.4 9,009 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 463	Free Cancellation	Rating 7.1 10,421 reviews	Search Air Canada flights

United Airlines Flights From Montreal to San Francisco
United Airlines operates around 7 flights from Montreal to San Francisco every week. The average price of these flights found in the last 72 hours has been C$ 652, but momondo users have found United Airlines deals from Montreal to San Francisco from as low as C$ 435 round-trip. United Airlines has been scored 7.4/10 in 9,009 reviews.
Air Canada Flights From Montreal to San Francisco
Across 10,421 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from Montreal to San Francisco about 7 times each week, with ticket deals ranging from C$ 463 to C$ 652. Price data is based on momondo searches in the last 72 hours.

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Fremont

Carmel-by-the-Sea

Turlock

South San Francisco

Palo Alto

Cupertino

Mill Valley

Morgan Hill

Los Banos

Mountain View

Pacifica

Woodland

Roseville

Berkeley

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to San Francisco?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Montreal to San Francisco. momondo saves you time and could save you money on your trip.

Can I find flights from Montreal to San Francisco with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Francisco from Montreal with this policy.

How can momondo help me find flights from Montreal to San Francisco?

momondo helps you find the best flight between Montreal and San Francisco by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Montreal to San Francisco right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Francisco from Montreal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

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Get notified when prices go down

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Mon 8/12

Mon 15/12

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Fly to other destinations from Montreal

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Flights from Montreal Pierre Elliott Trudeau Intl to Toronto Pearson Intl

Cheap flights from Montreal to San Francisco from C$ 304

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal to San Francisco departing on 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from Montreal to San Francisco

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

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WestJet flights from Montreal to San Francisco

Our best WestJet deals on Montreal to San Francisco flight tickets

United Airlines flights from Montreal to San Francisco

Our best United Airlines deals on Montreal to San Francisco flight tickets

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Use the filters below to find and compare flights from Montreal to San Francisco that are best for you.

See travel insights to San Francisco from

How to get the cheapest flight ticket from Montreal to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Francisco?

What is the cheapest day to depart on your flight to San Francisco?

What is the cheapest time of day to depart on your flight to San Francisco?

What is the cheapest Montreal to San Francisco flight route?

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

How far in advance should I book a flight to San Francisco?

What cabin class options are available on Montreal to San Francisco flights?

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

Can stopping save me money on Montreal to San Francisco flights?

You could potentially save up to 25% on your flight if you consider stops on a Montreal to San Francisco flight.

How have Montreal to San Francisco flight prices changed over time?

As of November 2025, prices for Montreal to San Francisco flights are approximately 20% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Montreal to San Francisco?

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

Which airlines fly to San Francisco?

Which airport is the most popular layover for flights between Montreal and San Francisco?

Toronto (YYZ) was the most common stop: 89% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from Montreal to San Francisco?

Flights via Toronto (YYZ) offer the lowest average round-trip price of C$ 440.

Which layover airport has the shortest travel time from Montreal to San Francisco?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 8h 35m.

Which layover airport has the shortest connection time from Montreal to San Francisco?

Detroit (DTW) has the shortest average layover time for this route: 1h 21m.

How many flights depart from Montreal to San Francisco on average per day?

4 flights are operational daily from Montreal to San Francisco as of November 2025. The most popular departure time for this route is 5:00p.m., with 100% of flights per day taking off in the afternoon.

How many flights depart from Montreal to San Francisco on average per week?

28 flights are operational weekly from Montreal to San Francisco as of November 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

When to book flights from Montreal to San Francisco

Cheap Montreal to San Francisco (YMQ to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to San Francisco

Best price found

Fastest flight time

Direct flights

Airports in San Francisco

How far is Montreal to San Francisco by plane?

When did momondo last update prices for flights from Montreal to San Francisco Airport?

How many operators does momondo search for flights from Montreal to San Francisco Airport?

How old do you have to be to fly from Montreal to San Francisco Airport?

What documentation or ID do you need to fly to San Francisco Airport?

What is the most popular plane model from Montreal to San Francisco?

What is the most popular airline from Montreal to San Francisco?

Best airlines flying from Montreal to San Francisco

Compare and see reviews for airlines that fly from Montreal to San Francisco with momondo

United Airlines Flights From Montreal to San Francisco

Air Canada Flights From Montreal to San Francisco

Travelling to a place near San Francisco?

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to San Francisco?

Can I find flights from Montreal to San Francisco with flexible booking policies on momondo?

How can momondo help me find flights from Montreal to San Francisco?

I’m not ready to book a flight from Montreal to San Francisco right now. Can momondo alert me if prices change?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States