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Cheap flights from Montreal to San Francisco from C$ 225

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 17/6. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SFO
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from Montreal to San Francisco are usually found in March or January, booked 89 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 15 April 2025.

Round-trip from

C$ 356

One-way from

C$ 225

Popular in

December

Cheapest in

March

Average price

C$ 580

Good round-trip deal

C$ 595 or less

Good one-way deal

C$ 318 or less
Air Canada
  • Air Canada
  • 1/5-4/5
  • Nonstop
  • 12h 05m total
  • Montreal to San Francisco
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Porter Airlines
  • Porter Airlines
  • 17/6
  • 1 total stop
  • 8h 45m total
  • Montreal to San Francisco
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Highest demand for flights based on searches. 5% potential increase in price (C$ 48 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 25 potential savings vs. average RT price).
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Average for round-trip flights in April 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 15 April 2025.

Thu 1/54:30 p.m.YUL - SFO
Nonstop6h 25mAir Canada
Sun 4/511:25 a.m.SFO - YUL
Nonstop5h 40mAir Canada
Deal found 14/4C$ 356
Sat 10/56:45 a.m.YUL - SFO
1 stop8h 45mPorter Airlines
Wed 14/51:30 p.m.SFO - YUL
1 stop8h 07mPorter Airlines
Deal found 13/4C$ 358
Mon 21/76:45 a.m.YUL - SFO
2 stops13h 30mWestJet
Wed 23/712:50 p.m.SFO - YUL
1 stop8h 53mWestJet
Deal found 13/4C$ 368
Thu 1/57:00 a.m.YUL - SFO
1 stop14h 07mDelta
Thu 8/55:50 a.m.SFO - YUL
1 stop7h 25mDelta
Deal found 14/4C$ 406
Wed 28/56:45 a.m.YUL - SFO
1 stop8h 45mMultiple Airlines
Wed 4/612:50 p.m.SFO - YUL
1 stop8h 53mMultiple Airlines
Deal found 13/4C$ 413
Thu 1/53:44 p.m.YUL - SFO
1 stop9h 52mAmerican Airlines
Wed 7/512:21 a.m.SFO - YUL
1 stop10h 23mAmerican Airlines
Deal found 14/4C$ 419
Thu 10/78:05 a.m.YUL - SFO
Nonstop6h 10mUnited Airlines
Thu 18/96:35 a.m.SFO - YUL
1 stop13h 51mUnited Airlines
Deal found 14/4C$ 470

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 15 April 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 1/5

4:30 p.m.-7:55 p.m.

Nonstop6h 25m

San Francisco

Sun 4/5

11:25 a.m.-8:05 p.m.

Nonstop5h 40m

C$ 356

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 10/5

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

1 stop8h 45m

San Francisco

Wed 14/5

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

1 stop8h 07m

C$ 358

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 19/9

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

2 stops13h 29m

San Francisco

Tue 23/9

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

1 stop8h 51m

C$ 362

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 2/5

8:10 a.m.-11:35 a.m.

Nonstop6h 25m

San Francisco

Mon 5/5

12:10 a.m.-11:55 a.m.

1 stop8h 45m

C$ 398

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 1/5

7:00 a.m.-6:07 p.m.

1 stop14h 07m

San Francisco

Wed 7/5

6:15 a.m.-5:40 p.m.

1 stop8h 25m

C$ 406

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 13/5

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

1 stop8h 45m

San Francisco

Mon 30/6

2:45 p.m.-12:43 a.m.

2 stops30h 58m

C$ 417

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 1/5

3:44 p.m.-10:36 p.m.

1 stop9h 52m

San Francisco

Wed 7/5

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

1 stop10h 23m

C$ 419

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 17/6

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

1 stop8h 45m

C$ 225

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 8/5

7:00 a.m.-7:44 a.m.

3 stops27h 44m

C$ 227

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 14/7

6:45 a.m.-2:48 p.m.

2 stops11h 03m

C$ 232

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/4

Showing 1-10 of 14 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

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 15 April 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 45% 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 30 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.

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 15 April 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).

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 15 April 2025.
See what other customers who have flown with Porter Airlines, Delta 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.
Porter Airlines
8.0
Very good
280 reviews
Check prices

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Comfort

8.0

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Porter Airlines
8.0
Very good
280 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Comfort

8.0

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
Delta
8.0
Very good
7,917 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Comfort

8.0

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
United Airlines
7.4
Good
8,656 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Comfort

8.0

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Comfort

8.0

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?
WestJet
7.2
Good
2,805 reviews
Porter Airlines
8.0
Very good
280 reviews
Check prices

Boarding

8.2

Food

7.6

Crew

8.7

Overall

8.0

Comfort

8.0

Entertainment

6.9

Reviews

1 / 17
10.0
Excellent

Anonymous,Dec 2024

YYZ - LAS

Everything about the rescheduled (cost me $180) flight great. ***Being denied boarding because I was few minutes under 1.5 hours was not. Stuck at the Kiosk for about 15 minutes before it directed me to the Porter counter was strange. Do not know why checking in online at home was not successful? I think something was up...what can you do?

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 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, Air Canada (C$ 356), Porter Airlines (C$ 358), and WestJet (C$ 370) offers the cheapest pricing from Montreal to San Francisco. You may be able to fly from Montreal to San Francisco for 40% 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$ 225), WestJet (C$ 227), and Air Canada (C$ 237).

  • 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 Canada (65%), Brussels Airlines (65%) or United Airlines (64%) 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$ 1,767, our data shows the cheapest flight currently is C$ 232. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Francisco), you can expect to pay C$ 343 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
Redwood City
Burlingame
South San Francisco
San Bruno
Scotts Valley
Novato
Belmont
Millbrae
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 15 April 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 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 316AverageC$ 475FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 334AverageC$ 509FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 345AverageC$ 578FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 356AverageC$ 623FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 463AverageC$ 703FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 478AverageC$ 679FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 507AverageC$ 593FlexibilityNo 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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