$184 Cheap Flights from Montreal (YUL) to San Francisco (SFO)

View $184 flight on Wed, Aug 27, 2025Opens in a new window

Popular airlines from Montreal–Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Montreal to San Francisco (YUL-SFO)

Prices were available within the past 7 days and start at $184 for one-way flights and $315 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Aug 27 - Tue, Sep 2
YUL
Montreal
SFO
San Francisco
$315 Roundtrip, just found
$315
Roundtrip
just found
Select Air Canada flight, departing Wed, Aug 27 from Montreal to San Francisco, returning Tue, Sep 2, priced at $315 just found
United
Thu, Aug 21 - Sun, Aug 31
YUL
Montreal
SFO
San Francisco
$319 Roundtrip, found 3 hours ago
$319
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Aug 21 from Montreal to San Francisco, returning Sun, Aug 31, priced at $319 found 3 hours ago
Air Canada
Wed, Aug 27 - Tue, Sep 2
YUL
Montreal
SFO
San Francisco
$321 Roundtrip, just found
$321
Roundtrip
just found
Select Air Canada flight, departing Wed, Aug 27 from Montreal to San Francisco, returning Tue, Sep 2, priced at $321 just found
United
Sun, Aug 31 - Fri, Sep 5
YUL
Montreal
SFO
San Francisco
$321 Roundtrip, found 3 days ago
$321
Roundtrip
found 3 days ago
Select United flight, departing Sun, Aug 31 from Montreal to San Francisco, returning Fri, Sep 5, priced at $321 found 3 days ago
Air Canada
Fri, Aug 29 - Tue, Sep 2
YUL
Montreal
SFO
San Francisco
$322 Roundtrip, found 6 days ago
$322
Roundtrip
found 6 days ago
Select Air Canada flight, departing Fri, Aug 29 from Montreal to San Francisco, returning Tue, Sep 2, priced at $322 found 6 days ago
United
Wed, Aug 13 - Mon, Aug 18
YUL
Montreal
SFO
San Francisco
$323 Roundtrip, found 4 hours ago
$323
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Aug 13 from Montreal to San Francisco, returning Mon, Aug 18, priced at $323 found 4 hours ago
United
Wed, Aug 27 - Tue, Sep 2
YUL
Montreal
SFO
San Francisco
$325 Roundtrip, just found
$325
Roundtrip
just found
Select United flight, departing Wed, Aug 27 from Montreal to San Francisco, returning Tue, Sep 2, priced at $325 just found
WestJet
Mon, Sep 1 - Tue, Sep 2
YUL
Montreal
SFO
San Francisco
$325 Roundtrip, found 4 days ago
$325
Roundtrip
found 4 days ago
Select WestJet flight, departing Mon, Sep 1 from Montreal to San Francisco, returning Tue, Sep 2, priced at $325 found 4 days ago
Porter Airlines
Sun, Aug 17 - Wed, Aug 20
YUL
Montreal
SFO
San Francisco
$339 Roundtrip, found 6 days ago
$339
Roundtrip
found 6 days ago
Select Porter Airlines flight, departing Sun, Aug 17 from Montreal to San Francisco, returning Wed, Aug 20, priced at $339 found 6 days ago
Delta
Wed, Aug 27 - Tue, Sep 2
YUL
Montreal
SFO
San Francisco
$348 Roundtrip, just found
$348
Roundtrip
just found
Select Delta flight, departing Wed, Aug 27 from Montreal to San Francisco, returning Tue, Sep 2, priced at $348 just found

Find the cheapest month to fly from Montreal (YUL) to San Francisco (SFO)

September is typically the cheapest month to fly

From $241 - $378 per traveler.

Graph displaying average flight prices per month

Flights from Montreal (YUL) to San Francisco (SFO)
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
San Francisco Intl.
Airlines serving
Air Canada, American Airlines, Delta, Porter Airlines, United, WestJet
Roundtrip price
$315
Distance
2532 mi
Average flight time
3 hours 11 mins

Montreal to San Francisco Flights

The cheapest times to fly from Montreal to San Francisco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Montreal to San Francisco are during the month of August. You can find some of the cheapest flights from Montreal to San Francisco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Montreal to San Francisco

Sunday is one of the best days to book for cheap flights from Montreal to San Francisco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Montreal to San Francisco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Montreal to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $184 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Montreal to San Francisco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Montreal to San Francisco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO) cost?
You can pick up cheap return flights starting from $316 from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving YUL on August 7 2025 and touching down at SFO. The price was last updated on July 12 2025 and has not changed since.
What is the cheapest month to fly from YUL to SFO?
The cheapest flights from YUL to SFO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO)?
When jetting out of Pierre Elliott Trudeau Intl. Airport (YUL), you can hop on a nonstop flight to San Francisco Intl. Airport (SFO) with Air Canada.
What is the cheapest airline that flies from YUL to SFO?
Right now, the cheapest airline operating one-way flights from YUL to SFO is United. You can take off on this route from $186. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from YUL on August 23 2025. Prices were last updated on July 12 2025 and have not changed since.
How many flights per day from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO)?
On average, Pierre Elliott Trudeau Intl. Airport (YUL) only offers 1 nonstop flight to San Francisco Intl. Airport (SFO) per day. To explore more options, try Expedia's easy-to-use filter tool. Enter your travel details, then select "1 Stop" or "2+ Stops" to discover flights offering layovers.
What are the most popular departure times for flights from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO)?
More people fly between YUL and SFO at 6 PM than at any other time of day. Prefer a quieter experience? Consider flying outside peak hours and it's possible you'll save on your fare as well.
What day of the week has the most flights from YUL to SFO?
Depart on a Friday if you're looking for the best selection of flights from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO).
What is the earliest flight from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO)?
The first flight of the day leaving Pierre Elliott Trudeau Intl. Airport (YUL) is at around 6:20PM UTC-5. Catch this flight and you'll arrive at San Francisco Intl. Airport (SFO) at approximately 9:51PM UTC-8. The entire trip takes 6h 31m.
How long does it take to fly from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO)?
Typically, it takes 6 hours and 31 minutes to travel the 2,500 mi from YUL to SFO.
What airline has the least delays from YUL to SFO?
With 86% of journeys typically landing on schedule, United Airlines has the best on-time performance for direct flights from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO). To check your flight status and receive notifications about any changes, use the Expedia App.
What is the best time to fly from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO)?
To land at San Francisco Intl. Airport (SFO) on time, book a flight that leaves from Pierre Elliott Trudeau Intl. Airport (YUL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Francisco from Pierre Elliott Trudeau Intl. Airport (YUL)?
San Francisco Intl. Airport (SFO) is the only airport in San Francisco with direct flights from Pierre Elliott Trudeau Intl. Airport (YUL). Check out your options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO) last-minute?
Last-minute bookings from YUL to SFO are usually more expensive. To secure the cheapest rates, start searching for flights ahead of time. That said, if your travel plans are flexible, you may find a cheap fare right before your journey.
Is it cheaper to book a YUL to SFO flight and hotel package?
You'll generally save money by booking a YUL to SFO flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your preferred flights and accommodations, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Pierre Elliott Trudeau Intl. Airport (YUL) to San Francisco Intl. Airport (SFO)?
If you booked your YUL to SFO flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Explore a world of travel with Expedia

*Available to One Key members.