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$188+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to San Francisco (SFO)

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SFO
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to San Francisco are usually found in April or September, booked 26 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Pierre Elliott Trudeau Intl to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) 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 August 14, 2025.

Round-trip from

$316
(Kiwi.com)

One-way from

$188
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$418

Good round-trip deal

$316 or less

Good one-way deal

$231 or less
From Montreal Pierre Elliott Trudeau Intl to San Francisco
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One-way flight from Montreal Pierre Elliott Trudeau Intl to San Francisco
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Highest demand for flights based on searches. 8% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to San Francisco.
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Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to San Francisco.
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Find flight deals from Pierre Elliott Trudeau Intl to San Francisco

Cheapest flights from Pierre Elliott Trudeau Intl to San Francisco
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:45 amYUL - SFO
2 stops13h 42mMultiple Airlines
Tue 11/1810:15 amSFO - YUL
1 stop27h 12mMultiple Airlines
Deal found 8/14$316
This Flightnetwork deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/275:30 pmYUL - SFO
1 stop21h 24mWestJet
Sat 10/412:50 pmSFO - YUL
1 stop8h 51mWestJet
Deal found 8/13$317
This Kiwi.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:45 amYUL - SFO
2 stops13h 40mMultiple Airlines
Sat 10/410:15 amSFO - YUL
1 stop26h 57mMultiple Airlines
Deal found 8/12$318
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/75:30 pmYUL - SFO
2 stops23h 27mWestJet
Sun 9/2812:50 pmSFO - YUL
1 stop8h 51mWestJet
Deal found 8/13$319
This Trip.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/95:30 pmYUL - SFO
2 stops23h 27mWestJet
Tue 10/1412:50 pmSFO - YUL
1 stop8h 51mWestJet
Deal found 8/14$320
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:45 amYUL - SFO
1 stop8h 38mMultiple Airlines
Sat 10/410:15 amSFO - YUL
1 stop11h 21mMultiple Airlines
Deal found 8/13$321
This eDestinos deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:10 amYUL - SFO
1 stop28h 20mMultiple Airlines
Tue 9/2310:15 amSFO - YUL
2 stops30h 05mMultiple Airlines
Deal found 8/14$322
This Mytrip deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:30 pmYUL - SFO
2 stops23h 27mWestJet
Wed 9/1012:50 pmSFO - YUL
1 stop8h 51mWestJet
Deal found 8/13$323
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/75:30 pmYUL - SFO
2 stops23h 27mWestJet
Mon 9/227:30 amSFO - YUL
2 stops13h 57mWestJet
Deal found 8/13$325
This oojo deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:30 pmYUL - SFO
1 stop30h 54mWestJet
Mon 10/2012:50 pmSFO - YUL
1 stop8h 51mWestJet
Deal found 8/14$327

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl 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 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco that are best for you.

Fly from

Pierre Elliott Trudeau Intl

Fly to

San Francisco

Route

Depart

Return

Price

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 9/23

6:45 am-5:25 pm

2 stops13h 40m

San Francisco

Sat 10/4

10:15 am-4:12 pm

1 stop26h 57m

$318

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 10/9

7:00 am-1:57 pm

2 stops33h 57m

San Francisco

Tue 10/14

12:50 pm-12:41 am

1 stop8h 51m

$319

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 9/24

6:45 am-5:25 pm

2 stops13h 40m

San Francisco

Sat 10/4

10:15 am-4:12 pm

1 stop26h 57m

$320

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 9/27

6:45 am-12:23 pm

1 stop8h 38m

San Francisco

Sat 10/4

10:15 am-12:36 am

1 stop11h 21m

$321

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 10/25

6:45 am-12:23 pm

1 stop8h 38m

San Francisco

Tue 10/28

10:15 am-4:27 pm

1 stop27h 12m

$326

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 10/8

7:00 am-9:24 pm

1 stop17h 24m

San Francisco

Mon 10/20

12:50 pm-12:41 am

1 stop8h 51m

$327

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

7:00 am-9:24 pm

1 stop17h 24m

San Francisco

Thu 9/11

12:50 pm-12:41 am

1 stop8h 51m

$328

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 9/27

7:00 am-9:24 pm

1 stop17h 24m

San Francisco

Fri 10/3

12:50 pm-12:41 am

1 stop8h 51m

$328

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

5:30 pm-11:54 am

1 stop21h 24m

San Francisco

Wed 9/10

12:50 pm-12:41 am

1 stop8h 51m

$329

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 9/22

6:45 am-11:29 pm

2 stops19h 44m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 19 results
1
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The best insider tips for Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Montreal Pierre Elliott Trudeau Intl Airport to San Francisco trip
Airports
YUL

Use YULExpress to pre-book security fast track up to 72 hours before departure for a smoother experience.

Read more about YULby John Walton
SFO

Take BART from SFO to downtown San Francisco for the least expensive travel option, taking about 40 minutes.

Read more about SFOby Harriet Baskas
Our travel experts
John Walton

John Walton

Expert on YUL

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Harriet Baskas

Harriet Baskas

Expert on SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Best time to book a flight from Pierre Elliott Trudeau Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to San Francisco

How far ahead should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to San Francisco. Price data was last updated on August 8, 2025.

The best time to book flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco is 26 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco (average of $276). Flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco in June is currently the most expensive (average of $358). 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 YUL to SFO?

Find hourly flight availability from Pierre Elliott Trudeau Intl 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 August 14, 2025.

It’s optimal to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco in the evening. By choosing this option you can save up to 64% on the cost of your flight, compared to a flight in the afternoon.

Weekly flight availability from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco

Explore weekly flight availability from Pierre Elliott Trudeau Intl 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 August 14, 2025.

The most flights from YUL to SFO are scheduled on a Monday (9 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (8 on average).

What’s the top layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

Share of 1-stop round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport 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 67% of 1-stop itineraries from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco on Cheapflights.

What’s the cheapest layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

Average round-trip fare for 1-stop flights from Montreal Pierre Elliott Trudeau Intl Airport 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 $396.

What’s the fastest layover option from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

Shortest average travel time for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport 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 54m.

Which airport typically offers the quickest layover for flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

Average layover duration for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport 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 31m.

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 August 14, 2025.
Get a feel of what it's like to fly with Porter Airlines, United Airlines, and Air Canada from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
332 reviews

Crew

8.7

Food

7.6

Comfort

8.0

Entertainment

7.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
332 reviews
Porter Airlines
8.0
Very good
332 reviews

Crew

8.7

Food

7.6

Comfort

8.0

Entertainment

7.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
United Airlines
7.4
Good
8,916 reviews
Porter Airlines
8.0
Very good
332 reviews

Crew

8.7

Food

7.6

Comfort

8.0

Entertainment

7.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Air Canada
7.1
Good
9,949 reviews
Porter Airlines
8.0
Very good
332 reviews

Crew

8.7

Food

7.6

Comfort

8.0

Entertainment

7.0

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl?

    If you book a flight to San Francisco from Montreal Pierre Elliott Trudeau Intl, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco. There are 8 flights from Montreal Pierre Elliott Trudeau Intl to San Francisco per day from 3 different airlines.

  • What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco round-trip?

    Porter Airlines, at $227, was found to be the cheapest airline from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco.Alternate airlines to your destination round-trip include Air Canada and United Airlines. You may be able to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco for 44% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    Consider Air New Zealand (70%), Brussels Airlines (67%) or Air Canada (64%) when booking your flight. These represent the most reliable airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco.

  • What are the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    The cheapest flight price from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco is $184. On average you can expect to pay $676. The most popular route, (Montreal Pierre Elliott Trudeau Intl - San Francisco), can usually be booked for $328.

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to San Francisco that include hotel bookings?

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

  • How can I find direct flights from Pierre Elliott Trudeau Intl to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pierre Elliott Trudeau Intl to San Francisco.

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to San Francisco?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco (average of $276). Flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco in June is currently the most expensive (average of $358). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Santa Cruz
Livermore
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Hollister
Antioch
Watsonville
Manteca
Sunnyvale
Newark
Milpitas
Campbell
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San Leandro
Burlingame
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Vallejo

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Top 3 airlines flying from Pierre Elliott Trudeau Intl to San Francisco

Discover the top 3 airlines that operate flights from Pierre Elliott Trudeau Intl 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 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$227Average$306FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$289Average$418FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$351Average$575FlexibilityNo cancel feeOn-time69%

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