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

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

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

55 flights are operational weekly from Montreal to San Francisco as of August 2025. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.

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 50% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 7 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

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

7 flights are operational daily from Montreal to San Francisco as of August 2025. The most popular departure time for this route is 4:00p.m., with 40% of flights per day taking off in the afternoon.

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

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 8h 40m.

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 13m.

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$ 408.

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

Toronto (YYZ) was the most common stop: 92% of momondo users choosing one-stop flights on this route connected there.

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 6 operators available for flights from Montreal to San Francisco Airport as of August 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$ 226 Cheap Flights from Montreal to San Francisco (YMQ-SFO) in 2025

Q: What is the typical price of a round-trip flight between Montreal and San Francisco?

Prices are currently low for flights on this route. Typical prices usually range from C$ 512 to C$ 815. The lowest price recently found on this route was C$ 399.

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Find the cheapest flights from Montreal to San Francisco (YMQ-SFO)

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:45 a.m. - 5:24 p.m.YUL-SFO

13h 39m2 stops

10:15 a.m. - 7:17 p.m.SFO-YUL

30h 02m1 stop

C$ 399

Find Deal

Wed, 15 Oct - Tue, 21 Oct

6:45 a.m. - 8:38 a.m.YUL-SFO

28h 53m2 stops

10:15 a.m. - 4:12 p.m.SFO-YUL

26h 57m1 stop

C$ 421

Find Deal

Wed, 8 Oct - Wed, 22 Oct

6:45 a.m. - 5:14 p.m.YUL-SFO

13h 29m2 stops

12:50 p.m. - 12:41 a.m.SFO-YUL

8h 51m1 stop

C$ 424WestJet

Find Deal

Sun, 28 Sep - Sun, 5 Oct

5:30 p.m. - 1:57 p.m.YUL-SFO

23h 27m2 stops

12:50 p.m. - 12:41 a.m.SFO-YUL

8h 51m1 stop

C$ 439WestJet

Find Deal

Thu, 4 Sep - Wed, 10 Sep

6:45 a.m. - 12:23 p.m.YUL-SFO

8h 38m1 stop

1:25 p.m. - 12:37 a.m.SFO-YUL

8h 12m1 stop

C$ 464Porter Airlines

Find Deal

Wed, 10 Sep - Wed, 17 Sep

6:45 a.m. - 12:23 p.m.YUL-SFO

8h 38m1 stop

1:25 p.m. - 12:37 a.m.SFO-YUL

8h 12m1 stop

C$ 465Porter Airlines

Find Deal

Wed, 3 Sep - Sat, 6 Sep

4:45 p.m. - 7:51 p.m.YUL-SFO

6h 06mdirect

11:40 a.m. - 8:05 p.m.SFO-YUL

5h 25mdirect

C$ 476Air Canada

Find Deal

Wed, 8 Oct - Mon, 20 Oct

8:05 a.m. - 11:11 a.m.YUL-SFO

6h 06mdirect

11:40 a.m. - 8:05 p.m.SFO-YUL

5h 25mdirect

C$ 478Air Canada

Find Deal

Tue, 30 Sep - Thu, 16 Oct

6:30 p.m. - 9:40 p.m.YUL-SFO

6h 10mdirect

11:45 p.m. - 8:16 a.m.SFO-YUL

5h 31mdirect

C$ 483United Airlines

Find Deal

Thu, 4 Sep - Wed, 10 Sep

6:30 p.m. - 9:40 p.m.YUL-SFO

6h 10mdirect

11:45 p.m. - 8:16 a.m.SFO-YUL

5h 31mdirect

C$ 489United Airlines

Find Deal

Sat, 4 Oct - Mon, 13 Oct

American Airlines flights from Montreal to San Francisco

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

American Airlines

4 Sep

YUL12:59 p.m.Montreal Pierre Elliott Trudeau Intl

24h 08m

1 stop

SFO10:07 a.m.San Francisco

11 Sep

SFO7:05 a.m.San Francisco

12h 37m

1 stop

YUL10:42 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 482

Find similar

American Airlines

23 Aug

YUL7:29 a.m.Montreal Pierre Elliott Trudeau Intl

10h 19m

1 stop

SFO2:48 p.m.San Francisco

2 Sep

SFO12:47 a.m.San Francisco

7h 58m

1 stop

YUL11:45 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 701

Find similar

American Airlines

23 Aug

YUL2:35 p.m.Montreal Pierre Elliott Trudeau Intl

11h 17m

2 stops

SFO10:52 p.m.San Francisco

2 Sep

SFO12:47 a.m.San Francisco

7h 58m

1 stop

YUL11:45 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 714

Find similar

Air Canada flights from Montreal to San Francisco

Our best Air Canada deals on Montreal to San Francisco flight tickets

Air Canada

8 Oct

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

6h 06m

SFO7:51 p.m.San Francisco

20 Oct

SFO11:40 a.m.San Francisco

5h 25m

YUL8:05 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 476

Find similar

Air Canada

30 Sep

YUL8:05 a.m.Montreal Pierre Elliott Trudeau Intl

6h 06m

SFO11:11 a.m.San Francisco

16 Oct

SFO11:40 a.m.San Francisco

5h 25m

YUL8:05 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 478

Find similar

Air Canada

27 Aug

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

6h 12m

SFO7:57 p.m.San Francisco

6 Sep

SFO11:40 a.m.San Francisco

5h 25m

YUL8:05 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 491

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 15/10

6:45 a.m.-5:24 p.m.

2 stops13h 39m

San Francisco

Tue 21/10

10:15 a.m.-7:17 p.m.

1 stop30h 02m

C$ 399

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 8/10

6:45 a.m.-8:38 a.m.

2 stops28h 53m

San Francisco

Wed 22/10

10:15 a.m.-4:12 p.m.

1 stop26h 57m

C$ 421

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sun 28/9

6:45 a.m.-5:14 p.m.

2 stops13h 29m

San Francisco

Sun 5/10

12:50 p.m.-12:41 a.m.

1 stop8h 51m

C$ 424

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 4/9

5:30 p.m.-1:57 p.m.

2 stops23h 27m

San Francisco

Wed 10/9

12:50 p.m.-12:41 a.m.

1 stop8h 51m

C$ 439

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 10/9

6:45 a.m.-12:23 p.m.

1 stop8h 38m

San Francisco

Wed 17/9

1:25 p.m.-12:37 a.m.

1 stop8h 12m

C$ 464

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 3/9

6:45 a.m.-12:23 p.m.

1 stop8h 38m

San Francisco

Sat 6/9

1:25 p.m.-12:37 a.m.

1 stop8h 12m

C$ 465

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 8/10

4:45 p.m.-7:51 p.m.

Nonstop6h 06m

San Francisco

Mon 20/10

11:40 a.m.-8:05 p.m.

Nonstop5h 25m

C$ 476

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 30/9

8:05 a.m.-11:11 a.m.

Nonstop6h 06m

San Francisco

Thu 16/10

11:40 a.m.-8:05 p.m.

Nonstop5h 25m

C$ 478

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 4/9

6:30 p.m.-9:40 p.m.

Nonstop6h 10m

San Francisco

Wed 10/9

11:45 p.m.-8:16 a.m.

Nonstop5h 31m

C$ 483

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 4/10

6:30 p.m.-9:40 p.m.

Nonstop6h 10m

San Francisco

Mon 13/10

11:45 p.m.-8:16 a.m.

Nonstop5h 31m

C$ 489

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 typical price of a round-trip flight between Montreal and San Francisco?

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from Montreal is in May. Flight prices, which tend to average around C$ 508, are often lower during this time because this is during the off-season. The month of February is another great option to travel to San Francisco, with average flight prices from Montreal averaging around C$ 511.

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 Thursday. Travellers who choose to depart for San Francisco on a Thursday will often find tickets for as low as C$ 953. 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$ 1,280.

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

Flying to San Francisco from Montreal in the evening is the least expensive time of day to depart. momondo users have found prices as low as C$ 399 when looking at flights departing in the evening. In contrast, the most expensive time of day to depart to San Francisco is in the afternoon when prices are around C$ 1,252.

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$ 567 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$ 500 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 1% 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 August 2025, prices for Montreal to San Francisco flights are approximately 12% 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$ 226
Fastest flight time	6h 06m
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$ 226. The best round-trip flight deal from Montreal to San Francisco found on momondo in the last 72 hours is C$ 399.

The fastest flight from Montreal to San Francisco takes 6h 06m

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 06m.
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 6 operators available for flights from Montreal to San Francisco Airport as of August 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 55.21% of the total bookings. Other popular models include Airbus A220-300 with 36.08%, Boeing 737 MAX 9 with 3.39%, and Boeing 777-300ER with 1.45%.
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 52% of the total bookings. Other popular airlines include Porter Airlines with 25%, United Airlines with 18%, and WestJet with 3%.

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$ 238	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Porter Airlines	PriceFrom C$ 303	Free Cancellation	Rating 8.0 332 reviews	Search Porter Airlines flights
WestJet	PriceFrom C$ 331	Free Cancellation	Rating 7.2 3,013 reviews	Search WestJet flights
United Airlines	PriceFrom C$ 423	Free Cancellation	Rating 7.4 8,916 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 453	Free Cancellation	Rating 7.1 9,949 reviews	Search Air Canada flights
Air Transat	PriceFrom C$ 501	Free Cancellation	Rating 7.7 427 reviews	Search Air Transat flights

United Airlines Flights From Montreal to San Francisco
United Airlines operates around 17 flights from Montreal to San Francisco every week. The average price of these flights found in the last 72 hours has been C$ 462, but momondo users have found United Airlines deals from Montreal to San Francisco from as low as C$ 307 round-trip. United Airlines has been scored 7.4/10 in 8,916 reviews.
Air Canada Flights From Montreal to San Francisco
Across 9,949 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from Montreal to San Francisco about 19 times each week, with ticket deals ranging from C$ 329 to C$ 470. Price data is based on momondo searches in the last 72 hours.

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Sunnyvale

Fremont

Turlock

South San Francisco

Mountain View

Half Moon Bay

Cupertino

Mill Valley

Los Banos

Palo Alto

Pacifica

Berkeley

Roseville

Woodland

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.

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Cheap flights from Montreal to San Francisco from C$ 226

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 8/9. 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

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Find the cheapest flights from Montreal to San Francisco (YMQ-SFO)

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

American Airlines flights from Montreal to San Francisco

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

Air Canada flights from Montreal to San Francisco

Our best Air Canada 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 typical price of a round-trip flight between Montreal and San Francisco?

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 1% 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 August 2025, prices for Montreal to San Francisco flights are approximately 12% cheaper when compared to flights at the same time last year.

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

Porter Airlines, Air Canada, and WestJet 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: 92% 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$ 408.

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

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 8h 40m.

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 13m.

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

7 flights are operational daily from Montreal to San Francisco as of August 2025. The most popular departure time for this route is 4:00p.m., with 40% of flights per day taking off in the afternoon.

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

55 flights are operational weekly from Montreal to San Francisco as of August 2025. The most popular departure day for this route is Mon, with 16% 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.