San Francisco

$174+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SFO
Jun 17 — Jun 241
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pierre Elliott Trudeau Intl to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to San Francisco are usually found in April or September, booked 42 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 June 12, 2025.

Round-trip from

$285
(Trip.com)

One-way from

$174
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$408

Good round-trip deal

$357 or less

Good one-way deal

$225 or less
From Montreal Pierre Elliott Trudeau Intl to San Francisco
One-way flight from Montreal Pierre Elliott Trudeau Intl to San Francisco
Highest demand for flights based on searches. 7% potential increase in price ($35 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).
Average for round-trip flights in June 2025
Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to San Francisco.
Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to San Francisco.

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 June 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/10. 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.
Mon 8/255:30 pmYUL - SFO
1 stop21h 26mWestJet
Tue 9/212:50 pmSFO - YUL
1 stop8h 51mWestJet
Deal found 6/10$285
This FlightHub deal was found by Cheapflights users on 6/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/206:45 amYUL - SFO
1 stop8h 40mPorter Airlines
Wed 6/251:25 pmSFO - YUL
1 stop8h 12mPorter Airlines
Deal found 6/9$297
This Kissandfly.com deal was found by Cheapflights users on 6/12. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/177:00 amYUL - SFO
2 stops33h 59mMultiple Airlines
Fri 7/251:25 pmSFO - YUL
1 stop8h 12mMultiple Airlines
Deal found 6/12$309
This Air Canada deal was found by Cheapflights users on 6/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:25 amYUL - SFO
1 stop10h 03mAir Canada
Mon 10/2011:40 amSFO - YUL
Nonstop5h 25mAir Canada
Deal found 6/11$313
This United Airlines deal was found by Cheapflights users on 6/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:30 pmYUL - SFO
Nonstop6h 12mUnited Airlines
Mon 8/1811:20 pmSFO - YUL
1 stop10h 49mUnited Airlines
Deal found 6/12$326
This Kissandfly.com deal was found by Cheapflights users on 6/11. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/172:20 pmYUL - SFO
1 stop13h 37mLufthansa
Mon 7/2112:20 amSFO - YUL
1 stop16h 25mLufthansa
Deal found 6/11$350
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/47:29 amYUL - SFO
1 stop14h 10mAmerican Airlines
Sun 7/66:10 amSFO - YUL
1 stop7h 30mAmerican Airlines
Deal found 6/11$351
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/3012:45 pmYUL - SFO
1 stop13h 03mDelta
Tue 7/87:45 amSFO - YUL
1 stop13h 10mDelta
Deal found 6/11$368

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 June 12, 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

Mon 8/25

5:30 pm-11:56 am

1 stop21h 26m

San Francisco

Tue 9/2

12:50 pm-12:41 am

1 stop8h 51m

$285

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 8/18

6:45 am-12:23 pm

1 stop8h 38m

San Francisco

Mon 8/25

1:25 pm-12:37 am

1 stop8h 12m

$299

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 7/17

7:00 am-1:59 pm

2 stops33h 59m

San Francisco

Fri 7/25

1:25 pm-12:37 am

1 stop8h 12m

$309

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 10/8

8:25 am-3:28 pm

1 stop10h 03m

San Francisco

Mon 10/20

11:40 am-8:05 pm

Nonstop5h 25m

$313

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 8/6

6:30 pm-9:42 pm

Nonstop6h 12m

San Francisco

Mon 8/18

11:25 pm-5:26 pm

1 stop15h 01m

$326

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 7/17

2:20 pm-12:57 am

1 stop13h 37m

San Francisco

Mon 7/21

12:20 am-7:45 pm

1 stop16h 25m

$350

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Fri 7/4

7:29 am-6:39 pm

1 stop14h 10m

San Francisco

Sun 7/6

6:10 am-4:40 pm

1 stop7h 30m

$351

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 6/30

12:45 pm-10:48 pm

1 stop13h 03m

San Francisco

Tue 7/8

7:45 am-11:55 pm

1 stop13h 10m

$368

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 8/12

6:45 am-11:57 pm

2 stops20h 12m

$174

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 9/1

6:45 am-2:51 pm

2 stops11h 06m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 17 results
1
2

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 June 9, 2025.

The best time to book flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco is 42 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 $364). 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 June 12, 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 41% 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 June 12, 2025.

The most flights from YUL 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

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 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 June 12, 2025.
Read through reviews of airlines operating flights from Montreal to San Francisco, such as Porter Airlines, Delta and Brussels Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Overall

8.0

Food

7.6

Crew

8.7

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!!!

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Overall

8.0

Food

7.6

Crew

8.7

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!!!
8.0
Very good

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Overall

8.0

Food

7.6

Crew

8.7

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!!!

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Overall

8.0

Food

7.6

Crew

8.7

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!!!

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Overall

8.0

Food

7.6

Crew

8.7

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!!!

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Overall

8.0

Food

7.6

Crew

8.7

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!!!

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 4 different airlines.

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

    WestJet, at $285, 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 Porter Airlines and Air Canada. You may be able to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco for 32% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco one-way?

    The cheapest airlines for a one-way flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco are WestJet ($175), Porter Airlines ($179), and United Airlines ($181).

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

    Consider Air New Zealand (91%), Air Canada (91%) or United Airlines (91%) 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 $157. On average you can expect to pay $715. The most popular route, (Montreal Pierre Elliott Trudeau Intl - San Francisco), can usually be booked for $286.

  • 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 $364). 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 Montreal Pierre Elliott Trudeau Intl Airport?

Book flights to Montreal Pierre Elliott Trudeau Intl Airport if you plan to visit one of these locations
Roseville
Mountain View
South San Francisco
Livermore
Turlock
Santa Cruz
Manteca
Fairfield
Watsonville
Antioch
Hollister
Milpitas
Newark
Hayward
Alameda
Sunnyvale
Daly City
Union City
Campbell
Capitola

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Pierre Elliott Trudeau Intl to San Francisco

Discover the top 4 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$231Average$334FlexibilityNo cancel feeOn-time52%
Air TransatCheapest$266Average$421FlexibilityNo cancel feeOn-time50%
Air CanadaCheapest$316Average$425FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$341Average$628FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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.