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

According to our current data, WestJet (C$ 390), Porter Airlines (C$ 409), and Air Canada (C$ 428) offers the cheapest pricing from Montreal to San Francisco. You may be able to fly from Montreal to San Francisco for 31% less than the average price by searching for these airlines.

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

The cheapest airlines for a one-way flight from Montreal to San Francisco are WestJet (C$ 239), Porter Airlines (C$ 245), and United Airlines (C$ 247).

What are the cheapest flights from Montreal to San Francisco?

While on average a flight from Montreal to San Francisco is generally C$ 1,909, our data shows the cheapest flight currently is C$ 259. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Francisco), you can expect to pay C$ 391 for that flight.

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

No one likes to see their flight delayed. When booking a flight from Montreal to San Francisco consider choosing Air New Zealand (91%), Air Canada (91%) or United Airlines (91%) as they are the most reliable in getting you off to your destination on time.

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

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

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

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 53% on your flight compared to booking on days when demand is much higher.

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

Find a great deal and save up to 78% by booking at least 56 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Montreal to San Francisco within the next two weeks, with the cheapest ticket starting at C$ 500.

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

February is one of the best times of the year to fly to San Francisco from Montreal. Prices for February average C$ 569 per person but you can even find prices for as low as C$ 332. The most expensive prices can be found in the month of December. Opting for a February flight can save you 33% on your journey compared to booking in December

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

Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Montreal. On average, San Francisco has 8 inbound flights from Montreal per day from 6 airlines. San Francisco is conveniently located just 19.0 km from San Francisco’s city centre.

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

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

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

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.

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

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.

C$ 238+ Flights from Montreal to San Francisco

Cheapflights Tip: The best prices from Montreal to San Francisco are usually found in February or March, booked 89 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Montreal to San Francisco

Round-trip from	C$ 390
One-way from	C$ 238
Popular in	December
Cheapest in	February
Average price	C$ 554
Good round-trip deal	C$ 723 or less
Good one-way deal	C$ 435 or less

WestJet
25/8-2/9
2 total stops
30h 17m total
Montreal to San Francisco

Search Deals

12/8
2 total stops
20h 12m total
Montreal to San Francisco

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (C$ 72 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Price to beat on a round-trip flight from Montreal (YMQ) to San Francisco.

Search Deals

Price to beat on a one-way flight from Montreal (YMQ) to San Francisco.

Search Deals

Find flight deals from Montreal to San Francisco

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 12 June 2025.

Mon 25/85:30 p.m.YUL - SFO

1 stop21h 26mWestJet

Tue 2/912:50 p.m.SFO - YUL

1 stop8h 51mWestJet

Deal found 10/6C$ 390

Fri 20/66:45 a.m.YUL - SFO

1 stop8h 40mPorter Airlines

Wed 25/61:25 p.m.SFO - YUL

1 stop8h 12mPorter Airlines

Deal found 9/6C$ 406

Thu 17/77:00 a.m.YUL - SFO

2 stops33h 59mMultiple Airlines

Fri 25/71:25 p.m.SFO - YUL

1 stop8h 12mMultiple Airlines

Deal found 12/6C$ 422

Wed 8/108:25 a.m.YUL - SFO

1 stop10h 03mAir Canada

Mon 20/1011:40 a.m.SFO - YUL

Nonstop5h 25mAir Canada

Deal found 11/6C$ 428

Wed 6/86:30 p.m.YUL - SFO

Nonstop6h 12mUnited Airlines

Mon 18/811:20 p.m.SFO - YUL

1 stop10h 49mUnited Airlines

Deal found 12/6C$ 446

Thu 17/72:20 p.m.YUL - SFO

1 stop13h 37mLufthansa

Mon 21/712:20 a.m.SFO - YUL

1 stop16h 25mLufthansa

Deal found 11/6C$ 479

Fri 4/77:29 a.m.YUL - SFO

1 stop14h 10mAmerican Airlines

Sun 6/76:10 a.m.SFO - YUL

1 stop7h 30mAmerican Airlines

Deal found 11/6C$ 480

Mon 30/612:45 p.m.YUL - SFO

1 stop13h 03mDelta

Tue 8/77:45 a.m.SFO - YUL

1 stop13h 10mDelta

Deal found 11/6C$ 503

Best flights from Montreal to San Francisco
Discover carefully curated flight deals from Montreal to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 12 June 2025.

Mon 25/85:30 p.m.YUL - SFO

1 stop21h 26mWestJet

Tue 2/912:50 p.m.SFO - YUL

1 stop8h 51mWestJet

Deal found 10/6C$ 390

Mon 18/86:45 a.m.YUL - SFO

1 stop8h 38mPorter Airlines

Mon 25/81:25 p.m.SFO - YUL

1 stop8h 12mPorter Airlines

Deal found 11/6C$ 409

Thu 17/77:00 a.m.YUL - SFO

2 stops33h 59mMultiple Airlines

Fri 25/71:25 p.m.SFO - YUL

1 stop8h 12mMultiple Airlines

Deal found 12/6C$ 422

Wed 8/108:25 a.m.YUL - SFO

1 stop10h 03mAir Canada

Mon 20/1011:40 a.m.SFO - YUL

Nonstop5h 25mAir Canada

Deal found 11/6C$ 428

Wed 6/86:30 p.m.YUL - SFO

Nonstop6h 12mUnited Airlines

Mon 18/811:20 p.m.SFO - YUL

1 stop10h 49mUnited Airlines

Deal found 12/6C$ 446

Thu 17/72:20 p.m.YUL - SFO

1 stop13h 37mLufthansa

Mon 21/712:20 a.m.SFO - YUL

1 stop16h 25mLufthansa

Deal found 11/6C$ 479

Fri 4/77:29 a.m.YUL - SFO

1 stop14h 10mAmerican Airlines

Sun 6/76:10 a.m.SFO - YUL

1 stop7h 30mAmerican Airlines

Deal found 11/6C$ 480

Mon 30/612:45 p.m.YUL - SFO

1 stop13h 03mDelta

Tue 8/77:45 a.m.SFO - YUL

1 stop13h 10mDelta

Deal found 11/6C$ 503

Direct flights from Montreal to San Francisco
Explore direct flight options from Montreal to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 June 2025.

Wed 8/104:45 p.m.YUL - SFO

Nonstop6h 06mAir Canada

Mon 20/1011:40 a.m.SFO - YUL

Nonstop5h 25mAir Canada

Deal found 10/6C$ 420

Thu 17/76:30 p.m.YUL - SFO

Nonstop6h 12mUnited Airlines

Thu 24/711:47 p.m.SFO - YUL

Nonstop5h 29mUnited Airlines

Deal found 12/6C$ 448

Thu 26/66:30 p.m.YUL - SFO

Nonstop6h 12mLufthansa

Fri 4/711:47 p.m.SFO - YUL

Nonstop5h 29mLufthansa

Deal found 10/6C$ 463

Thu 17/76:30 p.m.YUL - SFO

Nonstop6h 12mMultiple Airlines

Wed 23/711:40 a.m.SFO - YUL

Nonstop5h 25mMultiple Airlines

Deal found 10/6C$ 470

Sat 12/74:45 p.m.YUL - SFO

Nonstop6h 12mBrussels Airlines

Sun 27/78:20 a.m.SFO - YUL

Nonstop5h 25mBrussels Airlines

Deal found 10/6C$ 1,237

Last-minute flights from Montreal to San Francisco
Discover last-minute flight deals from Montreal to San Francisco. Data last updated 12 June 2025 and is based on user searches.

Tue 17/65:30 p.m.YUL - SFO

2 stops23h 29mWestJet

Wed 2/712:50 p.m.SFO - YUL

2 stops32h 47mWestJet

Deal found 12/6C$ 488

Thu 19/64:45 p.m.YUL - SFO

Nonstop6h 12mAir Canada

Mon 23/611:55 p.m.SFO - YUL

Nonstop5h 29mAir Canada

Deal found 12/6C$ 548

Thu 19/62:35 p.m.YUL - SFO

1 stop8h 50mAmerican Airlines

Sun 22/612:59 a.m.SFO - YUL

1 stop10h 51mAmerican Airlines

Deal found 12/6C$ 582

Fri 20/66:45 a.m.YUL - SFO

1 stop8h 40mPorter Airlines

Wed 25/61:25 p.m.SFO - YUL

1 stop8h 12mPorter Airlines

Deal found 9/6C$ 406

Fri 20/62:20 p.m.YUL - SFO

1 stop10h 55mUnited Airlines

Sun 22/611:55 p.m.SFO - YUL

Nonstop5h 29mUnited Airlines

Deal found 10/6C$ 447

Fri 20/66:45 p.m.YUL - SFO

1 stop9h 09mDelta

Mon 23/611:43 p.m.SFO - YUL

1 stop9h 14mDelta

Deal found 9/6C$ 448

Sun 22/66:45 a.m.YUL - SFO

2 stops29h 57mMultiple Airlines

Wed 25/61:25 p.m.SFO - YUL

1 stop8h 12mMultiple Airlines

Deal found 9/6C$ 532

Thu 26/66:30 p.m.YUL - SFO

Nonstop6h 12mLufthansa

Fri 4/711:47 p.m.SFO - YUL

Nonstop5h 29mLufthansa

Deal found 10/6C$ 463

Mon 30/612:45 p.m.YUL - SFO

1 stop13h 03mDelta

Tue 8/77:45 a.m.SFO - YUL

1 stop13h 10mDelta

Deal found 11/6C$ 503

Tue 1/78:05 a.m.YUL - SFO

Nonstop6h 10mAir Canada

Sun 6/711:40 a.m.SFO - YUL

Nonstop5h 25mAir Canada

Deal found 9/6C$ 440

Fri 4/77:29 a.m.YUL - SFO

1 stop14h 10mAmerican Airlines

Sun 6/76:10 a.m.SFO - YUL

1 stop7h 30mAmerican Airlines

Deal found 11/6C$ 480

Thu 17/75:30 p.m.YUL - SFO

2 stops23h 29mWestJet

Wed 23/76:05 p.m.SFO - YUL

2 stops27h 32mWestJet

Deal found 10/6C$ 395

One-way flights from Montreal to San Francisco
Search for one-way flight options from Montreal to San Francisco. Find affordable one-way fares based on user searches. Data last updated 12 June 2025.

Tue 12/86:45 a.m.YUL - SFO

2 stops20h 12mMultiple Airlines

Deal found 10/6C$ 238

Mon 1/96:45 a.m.YUL - SFO

2 stops11h 06mWestJet

Deal found 12/6C$ 239

Sat 4/106:45 a.m.YUL - SFO

1 stop8h 38mPorter Airlines

Deal found 11/6C$ 245

Wed 3/96:30 p.m.YUL - SFO

Nonstop6h 10mUnited Airlines

Deal found 12/6C$ 247

Wed 2/78:05 a.m.YUL - SFO

Nonstop6h 10mAir Canada

Deal found 9/6C$ 254

Wed 25/66:20 a.m.YUL - SFO

1 stop9h 55mDelta

Deal found 9/6C$ 260

Thu 26/612:30 p.m.YUL - SFO

2 stops13h 01mAmerican Airlines

Deal found 11/6C$ 287

Thu 19/64:45 p.m.YUL - SFO

Nonstop6h 12mBrussels Airlines

Deal found 11/6C$ 327

Sat 12/76:30 p.m.YUL - SFO

Nonstop6h 12mLufthansa

Deal found 10/6C$ 432

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 25/8

5:30 p.m.-11:56 a.m.

1 stop21h 26m

San Francisco

Tue 2/9

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

1 stop8h 51m

C$ 390

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 18/8

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

1 stop8h 38m

San Francisco

Mon 25/8

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

1 stop8h 12m

C$ 409

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 17/7

7:00 a.m.-1:59 p.m.

2 stops33h 59m

San Francisco

Fri 25/7

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

1 stop8h 12m

C$ 422

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 8/10

8:25 a.m.-3:28 p.m.

1 stop10h 03m

San Francisco

Mon 20/10

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

Nonstop5h 25m

C$ 428

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 6/8

6:30 p.m.-9:42 p.m.

Nonstop6h 12m

San Francisco

Mon 18/8

11:20 p.m.-1:09 p.m.

1 stop10h 49m

C$ 446

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 17/7

2:20 p.m.-12:57 a.m.

1 stop13h 37m

San Francisco

Mon 21/7

12:20 a.m.-7:45 p.m.

1 stop16h 25m

C$ 479

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 4/7

7:29 a.m.-6:39 p.m.

1 stop14h 10m

San Francisco

Sun 6/7

6:10 a.m.-4:40 p.m.

1 stop7h 30m

C$ 480

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 30/6

12:45 p.m.-10:48 p.m.

1 stop13h 03m

San Francisco

Tue 8/7

7:45 a.m.-11:55 p.m.

1 stop13h 10m

C$ 503

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 12/8

6:45 a.m.-11:57 p.m.

2 stops20h 12m

C$ 238

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 1/9

6:45 a.m.-2:51 p.m.

2 stops11h 06m

C$ 239

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/6

Showing 1-10 of 17 results

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.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

To ensure you get the cheapest price possible for a flight from Montreal to San Francisco, you should look to book at least 89 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.

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

Currently, January is the cheapest month in which you can book a flight from Montreal to San Francisco (average of C$ 276). Flying from Montreal to San Francisco in December is currently the most expensive (average of C$ 368). 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.

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

A simple way to save on the total cost of your ticket is to fly from Montreal to San Francisco in the evening. If you’re flexible enough to do this you can expect to save up to 54% on your trip compared to booking a flight in the afternoon.

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

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

Weekly flight availability from Montreal to San Francisco

The most flights from YMQ to SFO are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in San Francisco by month

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.

Temperature in San Francisco by month

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).

Reviews of airlines servicing San Francisco

See what other customers who have flown with Porter Airlines, Delta and Brussels Airlines from Montreal to San Francisco have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

Porter Airlines

8.0

Very good

288 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Delta

8.0

Very good

7,950 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Brussels Airlines

7.4

Good

355 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

United Airlines

7.4

Good

8,790 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

American Airlines

7.2

Good

10,000 reviews

Porter Airlines

8.0

Very good

288 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Mary,Jun 2025

FLL - YYZ

Related info for your journey

What airport do you fly into for flights to San Francisco from Montreal?
Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Montreal. On average, San Francisco has 8 inbound flights from Montreal per day from 6 airlines. San Francisco is conveniently located just 19.0 km from San Francisco’s city centre.
What are the cheapest airlines flying from Montreal to San Francisco round-trip?
According to our current data, WestJet (C$ 390), Porter Airlines (C$ 409), and Air Canada (C$ 428) offers the cheapest pricing from Montreal to San Francisco. You may be able to fly from Montreal to San Francisco for 31% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Montreal to San Francisco one-way?
The cheapest airlines for a one-way flight from Montreal to San Francisco are WestJet (C$ 239), Porter Airlines (C$ 245), and United Airlines (C$ 247).
What are the most reliable airlines from Montreal to San Francisco?
No one likes to see their flight delayed. When booking a flight from Montreal to San Francisco consider choosing Air New Zealand (91%), Air Canada (91%) or United Airlines (91%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Montreal to San Francisco?
While on average a flight from Montreal to San Francisco is generally C$ 1,909, our data shows the cheapest flight currently is C$ 259. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Francisco), you can expect to pay C$ 391 for that flight.
Can I find deals for flights from Montreal to San Francisco that include hotel bookings?
Yes. In addition to deals on Montreal to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Montreal to San Francisco?
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.
Can I find deals for business class flights from Montreal to San Francisco?
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.
What is the cheapest month to book a flight from Montreal to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Montreal to San Francisco (average of C$ 276). Flying from Montreal to San Francisco in December is currently the most expensive (average of C$ 368). 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.

See more FAQs

Richmond

San Ramon

Newark

Alameda

Redwood City

Burlingame

San Bruno

South San Francisco

Scotts Valley

Novato

Belmont

Millbrae

Santa Clara

Vallejo

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Montreal to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	CheapestC$ 303	AverageC$ 415	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
WestJet	CheapestC$ 329	AverageC$ 393	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
American Airlines	CheapestC$ 351	AverageC$ 667	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	CheapestC$ 433	AverageC$ 644	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 457	AverageC$ 641	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Transat	CheapestC$ 500	AverageC$ 585	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights

Fly with Cheapflights

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

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.

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

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.

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

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.

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

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.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Montreal to San Francisco from C$ 238

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 12/8. 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 March, booked 89 days in advance, depart on a Thursday or Friday and return on a Friday

Cheap flight deals from Montreal to San Francisco

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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 12 June 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 12 June 2025.

Cheapflights Fare Finder

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

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 9 June 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 12 June 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 8 June 2025.

Weekly flight availability from Montreal to San Francisco

Explore weekly flight availability from Montreal to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 12 June 2025.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

Reviews of airlines servicing San Francisco

See what other customers who have flown with Porter Airlines, Delta and Brussels Airlines from Montreal to San Francisco have to say. Users can see the overall rating for each airline as well as how each is rated in terms of 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?

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?

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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 12 June 2025.

Top 6 airlines flying from Montreal to San Francisco

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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 12 June 2025.