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Cheap flights from Montreal to San Francisco from C$ 232

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 23/5. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SFO
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Montreal to San Francisco are usually found in January or February, booked 55 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Montreal to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 March 2025.

Round-trip from

C$ 350

One-way from

C$ 232

Popular in

December

Cheapest in

January

Average price

C$ 569

Good round-trip deal

C$ 760 or less

Good one-way deal

C$ 349 or less
Porter Airlines
  • Porter Airlines
  • 8/5-15/5
  • 2 total stops
  • 16h 52m total
  • Montreal to San Francisco
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Porter Airlines
  • Porter Airlines
  • 23/5
  • 1 total stop
  • 8h 45m total
  • Montreal to San Francisco
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Highest demand for flights based on searches. 4% potential increase in price (C$ 38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Montreal (YMQ) to San Francisco.
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Price to beat on a one-way flight from Montreal (YMQ) to San Francisco.
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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 25 March 2025.

Thu 8/56:45 a.m.YUL - SFO
1 stop8h 45mPorter Airlines
Thu 15/51:30 p.m.SFO - YUL
1 stop8h 07mPorter Airlines
Deal found 24/3C$ 350
Tue 20/56:45 a.m.YUL - SFO
2 stops13h 30mWestJet
Tue 27/57:30 a.m.SFO - YUL
2 stops14h 07mWestJet
Deal found 24/3C$ 394
Tue 22/46:45 a.m.YUL - SFO
1 stop8h 54mMultiple Airlines
Tue 29/412:50 p.m.SFO - YUL
1 stop8h 53mMultiple Airlines
Deal found 24/3C$ 404
Sat 24/57:30 a.m.YUL - SFO
1 stop11h 05mAir Canada
Tue 27/511:25 a.m.SFO - YUL
Nonstop5h 40mAir Canada
Deal found 23/3C$ 473
Tue 20/54:45 p.m.YUL - SFO
Nonstop6h 25mUnited Airlines
Tue 27/511:25 a.m.SFO - YUL
Nonstop5h 40mUnited Airlines
Deal found 24/3C$ 500
Sun 20/43:44 p.m.YUL - SFO
1 stop10h 57mAmerican Airlines
Sat 26/412:47 a.m.SFO - YUL
1 stop11h 08mAmerican Airlines
Deal found 25/3C$ 536
Tue 13/54:45 p.m.YUL - SFO
Nonstop6h 25mBrussels Airlines
Sun 18/58:15 a.m.SFO - YUL
Nonstop5h 40mBrussels Airlines
Deal found 24/3C$ 629

Cheapflights Fare Finder

Customize your flight search to find flights from Montreal to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 25 March 2025.
Use the filters below to find and compare flights from Montreal to San Francisco that are best for you.

Fly from

Montreal

Fly to

San Francisco

Route

Depart

Return

Price

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 8/5

6:45 a.m.-12:30 p.m.

1 stop8h 45m

San Francisco

Thu 15/5

1:30 p.m.-12:37 a.m.

1 stop8h 07m

C$ 350

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 8/5

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

2 stops33h 59m

San Francisco

Thu 15/5

12:50 p.m.-12:43 a.m.

1 stop8h 53m

C$ 395

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 22/4

6:45 a.m.-12:39 p.m.

1 stop8h 54m

San Francisco

Tue 29/4

12:50 p.m.-12:43 a.m.

1 stop8h 53m

C$ 404

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 24/5

8:05 a.m.-11:30 a.m.

Nonstop6h 25m

San Francisco

Tue 27/5

8:15 a.m.-4:55 p.m.

Nonstop5h 40m

C$ 473

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sun 7/9

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

Nonstop6h 10m

San Francisco

Fri 12/9

12:43 a.m.-2:50 p.m.

1 stop11h 07m

C$ 504

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 10/5

2:35 p.m.-8:55 p.m.

1 stop9h 20m

San Francisco

Sat 10/5

12:21 a.m.-1:44 p.m.

1 stop10h 23m

C$ 539

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 13/5

4:45 p.m.-8:10 p.m.

Nonstop6h 25m

San Francisco

Sun 18/5

8:15 a.m.-4:55 p.m.

Nonstop5h 40m

C$ 629

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 23/5

6:45 a.m.-12:30 p.m.

1 stop8h 45m

C$ 232

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 11/7

6:45 a.m.-5:15 p.m.

2 stops13h 30m

C$ 256

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 12/5

6:45 a.m.-8:27 p.m.

2 stops16h 42m

C$ 258

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/3

Showing 1-10 of 16 results
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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.
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?

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 March 2025.

To ensure you get the cheapest price possible for a flight from Montreal to San Francisco, you should look to book at least 55 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 June is currently the most expensive (average of C$ 379). 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?

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 25 March 2025.

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 43% on your trip compared to booking a flight in the afternoon.

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 16 March 2025.

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

Rainfall in San Francisco by month

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

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

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 25 March 2025.
See what other customers who have flown with Delta, Porter Airlines and United 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.
Delta
8.0
Very good
7,890 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Porter Airlines
7.9
Good
275 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,605 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Brussels Airlines
7.4
Good
344 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,890 reviews
Check prices

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Montreal. On average, San Francisco has 3 inbound flights from Montreal per day from 7 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, Porter Airlines (C$ 350), WestJet (C$ 394), and Air Canada (C$ 473) offers the cheapest pricing from Montreal to San Francisco. You may be able to fly from Montreal to San Francisco for 44% 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 Porter Airlines (C$ 232), APG Airlines (C$ 252), and WestJet (C$ 256).

  • 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 Brussels Airlines (71%), Air Canada (70%) or United Airlines (70%) 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$ 2,766, our data shows the cheapest flight currently is C$ 270. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Francisco), you can expect to pay C$ 358 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 June is currently the most expensive (average of C$ 379). 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

Travelling to a place near Montreal?

Book flights to Montreal if you plan to visit one of these locations
Richmond
San Ramon
Newark
Alameda
Burlingame
Redwood City
South San Francisco
San Bruno
Scotts Valley
Novato
Belmont
Millbrae
Santa Clara
Vallejo

Browse thousands of different options on Cheapflights for your next trip

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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 25 March 2025.
Air Canada flights from Montreal to San Francisco
United Airlines flights from Montreal to San Francisco
Air Transat flights from Montreal to San Francisco

Top 7 airlines flying from Montreal to San Francisco

Discover the top 7 airlines that operate flights from Montreal to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 327AverageC$ 499FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 351AverageC$ 574FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 357AverageC$ 642FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 367AverageC$ 633FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 481AverageC$ 744FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 493AverageC$ 706FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 524AverageC$ 613FlexibilityNo cancel feeOn-time50%
Search Air Transat flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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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