Cheap flights from Montreal to San Francisco from C$ 332

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SFO
26 Dec — 2 Jan1
1 adult
1 adult, Economy, 0 bags

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

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

Thu 18/124:00 p.m.YUL - SFO
1 stop11h 32mAmerican Airlines
Sun 18/16:00 a.m.SFO - YUL
2 stops13h 44mAmerican Airlines
Deal found 26/11C$ 550
Wed 10/126:45 a.m.YUL - SFO
1 stop8h 55mMultiple Airlines
Sun 14/1211:33 p.m.SFO - YUL
2 stops13h 52mMultiple Airlines
Deal found 24/11C$ 552
Wed 10/129:00 a.m.YUL - SFO
1 stop9h 35mMultiple Airlines
Thu 11/121:00 p.m.SFO - YUL
1 stop15h 05mMultiple Airlines
Deal found 24/11C$ 557
Sat 6/126:45 a.m.YUL - SFO
2 stops32h 27mWestJet
Thu 11/121:00 p.m.SFO - YUL
1 stop15h 05mWestJet
Deal found 25/11C$ 566
Wed 10/126:45 a.m.YUL - SFO
1 stop8h 55mPorter Airlines
Sun 14/121:40 p.m.SFO - YUL
1 stop7h 55mPorter Airlines
Deal found 24/11C$ 567
Thu 18/127:00 a.m.YUL - SFO
1 stop9h 30mAir Canada
Sun 18/17:30 a.m.SFO - YUL
1 stop10h 30mAir Canada
Deal found 26/11C$ 569
Thu 4/127:30 p.m.YUL - SFO
1 stop19h 42mWestJet
Tue 9/121:00 p.m.SFO - YUL
1 stop15h 05mWestJet
Deal found 24/11C$ 570
Wed 3/127:30 p.m.YUL - SFO
1 stop19h 42mWestJet
Thu 11/121:00 p.m.SFO - YUL
1 stop15h 05mWestJet
Deal found 25/11C$ 574

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 26 November 2025.

Round-trip from

C$ 535

One-way from

C$ 332

Popular in

December

Cheapest in

February

Average price

C$ 660

Good round-trip deal

C$ 869 or less

Good one-way deal

C$ 532 or less
WestJet
  • WestJet
  • 18/1-22/1
  • 3 total stops
  • 71h 32m total
  • Montreal to San Francisco
Air Canada
  • Air Canada
  • 15/12
  • Nonstop
  • 6h 32m total
  • Montreal to San Francisco
Highest demand for flights based on searches. 8% potential increase in price (C$ 73 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease (C$ 21 potential savings vs. average RT price).
Average for round-trip flights in November 2025
Price to beat on a round-trip flight from Montreal (YMQ) to San Francisco.
Price to beat on a one-way flight from Montreal (YMQ) to San Francisco.

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 26 November 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

Mon 9/2

6:45 a.m.-12:10 p.m.

2 stops32h 25m

San Francisco

Thu 12/2

1:00 p.m.-12:38 a.m.

2 stops32h 38m

C$ 549

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sun 25/1

4:47 p.m.-11:25 p.m.

1 stop9h 38m

San Francisco

Wed 4/2

12:40 a.m.-1:42 p.m.

1 stop10h 02m

C$ 595

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 17/12

7:10 a.m.-1:33 p.m.

1 stop9h 23m

San Francisco

Sun 18/1

10:54 p.m.-12:12 p.m.

1 stop10h 18m

C$ 595

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 5/2

9:15 a.m.-7:19 p.m.

1 stop13h 04m

San Francisco

Fri 13/2

10:40 p.m.-3:16 p.m.

1 stop13h 36m

C$ 597

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 10/2

2:13 p.m.-9:35 p.m.

1 stop10h 22m

San Francisco

Wed 11/2

6:25 a.m.-7:48 p.m.

2 stops10h 23m

C$ 597

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 4/2

2:13 p.m.-10:58 p.m.

2 stops11h 45m

San Francisco

Fri 13/2

10:40 p.m.-3:16 p.m.

1 stop13h 36m

C$ 597

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 7/2

6:00 a.m.-11:42 a.m.

1 stop8h 42m

San Francisco

Sun 8/2

1:30 a.m.-3:16 p.m.

1 stop10h 46m

C$ 597

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 7/2

2:13 p.m.-10:58 p.m.

2 stops11h 45m

San Francisco

Sat 14/2

9:20 p.m.-3:16 p.m.

1 stop14h 56m

C$ 597

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 7/2

2:13 p.m.-10:58 p.m.

2 stops11h 45m

San Francisco

Fri 13/2

10:40 p.m.-7:48 p.m.

1 stop18h 08m

C$ 597

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 7/1

7:00 a.m.-5:50 p.m.

2 stops13h 50m

San Francisco

Tue 20/1

9:23 p.m.-2:00 p.m.

2 stops13h 37m

C$ 597

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/11

Showing 1-10 of 24 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 November 2025.

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

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

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

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

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

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

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

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

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

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 26 November 2025.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

How often are flights from Montreal to San Francisco delayed?

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

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

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

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

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

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

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

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 26 November 2025.
Read through reviews of airlines operating flights from Montreal to San Francisco, such as Porter Airlines,United Airlines, andWestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Food

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Food

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Food

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Food

7.6

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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 4 inbound flights from Montreal per day from 6 airlines. San Francisco is conveniently located just 19.0 km from San Francisco’s city centre.

  • How long is the flight from Montreal to San Francisco?

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

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

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

  • 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 Air Canada (C$ 339), United Airlines (C$ 340), and Delta (C$ 340).

  • 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 United Airlines (79%), Air Canada (74%) or Air New Zealand (74%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Montreal to San Francisco?

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

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

See more FAQs

Travelling to a place near San Francisco?

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

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Fly from Montreal to San Francisco on these airlines

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

Top 6 airlines flying from Montreal to San Francisco

Discover the top 6 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 26 November 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 220AverageC$ 626FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Porter AirlinesCheapestC$ 320AverageC$ 405FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 339AverageC$ 399FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 440AverageC$ 652FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 464AverageC$ 650FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 524AverageC$ 626FlexibilityNo cancel feeOn-timeN/A
Search Delta 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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