YUL - SFO

$195 Find Cheap Flights from Montreal to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to San Francisco departing on 9/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to San Francisco, as well as popular online travel agencies
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Montreal to San Francisco

Sat, Oct 4 - Thu, Oct 16
 Logo
7:00 am - 9:30 amYUL-SFO
29h 30m1 stop
 Logo
10:15 am - 12:37 amSFO-YUL
11h 22m2 stops
Thu, Oct 2 - Tue, Oct 14
 Logo
7:00 am - 9:30 amYUL-SFO
29h 30m1 stop
 Logo
10:15 am - 4:12 pmSFO-YUL
26h 57m1 stop
Sat, Oct 4 - Tue, Oct 14
 Logo
6:45 am - 9:30 amYUL-SFO
29h 45m2 stops
 Logo
10:15 am - 4:12 pmSFO-YUL
26h 57m1 stop
Sat, Sep 27 - Sun, Oct 5
WestJet Logo
5:30 pm - 11:54 amYUL-SFO
21h 24m1 stop
WestJet Logo
12:50 pm - 12:41 amSFO-YUL
8h 51m1 stop
$342WestJet
Find Deal
Thu, Oct 9 - Mon, Oct 13
WestJet Logo
5:30 pm - 1:57 pmYUL-SFO
23h 27m2 stops
WestJet Logo
7:30 am - 12:27 amSFO-YUL
13h 57m2 stops
$344WestJet
Find Deal
Fri, Sep 5 - Mon, Sep 22
Porter Airlines Logo
6:45 am - 12:23 pmYUL-SFO
8h 38m1 stop
Porter Airlines Logo
1:25 pm - 12:37 amSFO-YUL
8h 12m1 stop
$347Porter Airlines
Find Deal
Fri, Oct 3 - Fri, Oct 10
Air Canada Logo
4:45 pm - 7:51 pmYUL-SFO
6h 06mnonstop
Air Canada Logo
11:40 am - 8:05 pmSFO-YUL
5h 25mnonstop
$350Air Canada
Find Deal
Wed, Oct 8 - Fri, Oct 10
Air Canada Logo
7:30 am - 3:28 pmYUL-SFO
10h 58m1 stop
Air Canada Logo
7:10 am - 8:50 pmSFO-YUL
10h 40m1 stop
$351Air Canada
Find Deal
Thu, Sep 11 - Wed, Sep 17
United Airlines Logo
6:30 pm - 9:40 pmYUL-SFO
6h 10mnonstop
United Airlines Logo
11:45 pm - 8:16 amSFO-YUL
5h 31mnonstop
$357United Airlines
Find Deal
Sat, Oct 18 - Fri, Oct 24
United Airlines Logo
6:30 pm - 9:40 pmYUL-SFO
6h 10mnonstop
United Airlines Logo
11:45 pm - 8:16 amSFO-YUL
5h 31mnonstop
$370United Airlines
Find Deal
Expert advice

Expert advice for your flight from Montreal to San Francisco

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-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.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Air Canada

Air Canada’s Signature Class provides lie-flat seats, ideal for comfort on long-haul flights.


Air Canada offers live TV on some North American flights, enhancing in-flight entertainment.

Read more about Air Canadaby Stefanie Waldek
United Airlines

United’s Economy Plus offers up to six inches more legroom, enhancing comfort on longer flights.


United Polaris Lounge offers a luxurious experience with restaurants and less crowded spaces.

Porter Airlines

PorterReserve offers priority boarding and extra legroom, ideal for comfort on longer flights.


Porter’s newer jets feature wider seats, Wi-Fi, and power sockets, enhancing medium-haul flight comfort.

Airports
YUL

At YUL, complete US customs pre-clearance before departure. Arrive early to allow extra time for this process.

Read more about YULby Brandon Schultz
SFO

Use BART for a cost-effective ride from SFO to San Francisco. It's accessible from the International Terminal.

Read more about SFOby Blane Bachelor
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada and United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
John Walton

John Walton

Expert on Porter Airlines

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
Brandon Schultz

Brandon Schultz

Expert on YUL

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Booking Insights

KAYAK's insights & trends for Montreal to San Francisco flights

Get data-powered insights and trends into flights from Montreal to San Francisco to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

What’s the cheapest day of the week to fly from Montreal to San Francisco?

The average price of all round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco clicked on KAYAK for each day over the last 12 months.

For Montreal to San Francisco, Friday is the cheapest day to fly on average and Monday is the most expensive. Flying from San Francisco back to Montreal, the best deals are generally found on Wednesday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco is April, where tickets cost $344 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $547 and $446 respectively.

Can I save money by flying with a layover from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $605 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco, you should book around 2 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$195
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Montreal to San Francisco

When to book flights from Montreal to San Francisco

Are your dates flexible? Find out the best times to travel from Montreal to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Montreal to San Francisco flights

  • Are there pet relief areas at San Francisco International Airport?

    San Francisco Airport has eight pet relief areas available 24h a day, with drinking areas and fences for your pet’s comfort and security. At arrivals you’ll find pet relief areas located near the baggage claim levels in Terminal 1 (Courtyard 2), Terminal 2 (Courtyard 3) and Terminal 3 (Courtyard 4). Just follow the walkways with the paw prints to find the closest pet relief area.

  • What’s the fastest public transportation option to get from the airport to San Francisco’s city centre?

    Taking the BART train is the easiest and fastest public transportation option when travelling from the airport to the city centre. Trains depart about four times every hour from the BART station in the international terminal. The trip takes about 30min, and a one-way ticket costs $21 (about C$ 28). Most hotels in downtown San Francisco are within walking distance of a BART station.

  • Is there a museum at San Francisco Airport?

    The SFO Museum was founded in 1980, and San Francisco International Airport was the first airport to house this type of institution. Travellers passing through the airport as well as San Francisco residents can visit the exhibitions for free, with only nine of the 25 galleries being located post-security check.

  • Where can I rent a car at San Francisco International Airport?

    The car rental company offices at San Francisco International Airport are located in the Rental Car Center. To get there, you must take the free AirTrain Blue Line that connects all terminals, available 24h a day.

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

    In the last 3 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco was $195 for a one-way ticket and $327 for a round-trip.

  • Do I need a passport to fly between Montreal and San Francisco?

    A passport is required to fly from Montreal to San Francisco.

  • Which airlines offer Wi-Fi service onboard planes from Montreal to San Francisco?

    Air Canada, and United Airlines offer inflight Wi-Fi service on the Montreal to San Francisco flight route.

  • Which aircraft models fly most regularly from Montreal to San Francisco?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Montreal to San Francisco flight route.

  • Which airline alliances offer flights from Montreal to San Francisco?

    Star Alliance is the only airline alliance operating flights between Montreal and San Francisco.

  • On which days can I fly direct from Montreal to San Francisco?

    There are nonstop flights from Montreal to San Francisco on a daily basis.

  • Which is the best airline for flights from Montreal to San Francisco, Porter Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Montreal to San Francisco are Porter Airlines and United Airlines. With an average price for the route of $304 and an overall rating of 8.0, Porter Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $576 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Montreal to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Montreal to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Montreal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Montreal to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Montreal with another airline. Booking your flights between Montreal and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for $225 or less one-way and $326 or less round-trip.
  • The minute your flight from Montreal to San Francisco lands, you’ll see why San Francisco International Airport (SFO) is one of the best airports in the United States. The modern facilities are all about making your airport experience a pleasant one.
  • If you need to freshen up after your flight but don't want to go to a hotel, head over to FreshenUp for a shower. It's open 24/7, and a 30 min deluxe shower with complimentary shampoo, soap and lotion costs $25 (about C$ 33.33) per person. Need a power nap instead? They offer that service too. You can rent a nap room suite for $40 (about C$ 53.32) for 1h.
  • Flights from Montreal to San Francisco aren't the longest, but if you need to stretch after your trip, head over to the yoga room in Terminal 2. Not too many airports can say they have one, and in fact, San Francisco Airport is one of the first. The best part? You can use the room for free.
  • If you need medical assistance or left your prescribed medication at home, visit the SFO Medical Clinic in the main hall of the international terminal.
  • SFO is well-connected to the city centre through a variety of transportation options that fit all needs and all budgets. The most convenient option is to travel by taxi or to use a rideshare app, in order to reach the city centre in under 30 min. A taxi ride can cost between $46 and $66 (C$ 61.32 and C$ 87.98).

Prefer to fly direct from Montreal to San Francisco?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Montreal Pierre Elliott Trudeau Intl to San Francisco.
Find which airlines fly direct from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Montreal Pierre Elliott Trudeau Intl to San Francisco

Monday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Tuesday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Wednesday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Thursday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Friday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Saturday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Sunday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

See more direct flights

Direct returns

San Francisco to Montreal Pierre Elliott Trudeau Intl

Monday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Tuesday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Wednesday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Thursday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Friday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Saturday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

Sunday

Air Canada, Air New Zealand, Brussels Airlines, +1 more

Air Canada, Air New Zealand, +2 more

See more direct flights

Reviews of the top 3 airlines serving from Montreal to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Montreal to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Montreal to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Porter AirlinesOverall score based on 336 reviews
8.2Boarding
8.7Crew
7.0Entertainment
7.6Food
8.0Comfort
Airline reviews

There was a 5 hour delay. Missed connection and now an almost 21 hour lay over!

2.0 MediocreKirsten, Aug 2025BOS - YOW
Read more Porter Airlines reviews

There was a 5 hour delay. Missed connection and now an almost 21 hour lay over!

The flight was fine see earlier note for the problem

Three hours on the tarmac with almost zero communication from the cockpit. Not when offered a water in the interim. In my 67 years of flying all over the world the worst experience ever. The plane was half empty, however had to pay for seats to sit next to my girlfriend. Extra to take a carry on. I would never fly Porter again even for free.

All good the seats a little tight and no I pad screen

Everything was good except the fact you charge more for a carry on bag vs a check in bag and to top it off in US$ that was not impressive

Our flight was cancelled at the last minute for maintenance reasons and we were rebooked on a late flight when we purposefully booked our flight to be home early due to work.

Seemed like an old plane. Very noisy. The seat cushions were so old that the metal bracing of the seats were poking through. There was plenty of leg room though.

Flight was delayed over 2 hours, then landed at a different airport!

The whole experience from check in to deboarding was fantastic.

Just an evening before they canceled my ticket and offered me ticket costing 3 x times more than. I will not fall prey to these scams,Will never book through kayak now. Such a bad experience.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

I found the staff to not be very attentive at all. When paying for Business Class you expect a certain type of service and that was not found. They were almost rude even

Our experience on United Airlines was extremely poor. The plane was extremely cold throughout our entire flight- which multiple people complained about- and we had to wait 2 hours to get a blanket which was too thin and barely helped warm us up. As well as this, none of the entertainment features were working so we had to sit through a roughly 10 hour flight with nothing to keep our attention, including the actual flight path screen. It was an extremely disappointing experience and I would hope that this gets fixed if we ever choose United Airlines again.

I really enjoyed flying with United airlines amazing experience , good customer service and great food

1.It will be better if sandwich is warm. 2.The food is too salty. 3.Breakfast needs some vegetables or fruits.

Boarded plane and then delayed 1.5 hours while on the plane

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

Mixed experienced. Nice staff. Spacious 787 better than cramped Airbus, though my seat was broken. The bad: Way overpriced ticket and charged for food despite 6 hr flight.

Your crew was so so so wonderful Only thing sound be great if you kept some phone chargers and converters rest 👌👌👌👌

The speakers were way too loud. Music was played during boarding too. This noise could've been avoided.

The TSA people or whatever you call them were a bit rude- I asked why I had to take my shoes off bc I'm 75 and in the USA, I don't have to. The man didn't need to snap at me. It wasn't even busy! The plane was ok, a bit small for such a long flight, but I'm very familiar with the 737 used ( I fly it often between SFO and SAN) service was ok-nothing special. If I drank alcohol I guess I would be happy with free choices. the plane was HOT and even the FA commented on it. They tried to get it cooler, but it never happened.

Multiple change of the gates at Pearson, delayed flight was extremely uncomfortable.

Easy boarding, punctuality, decent service. I can only complain about the measly snack.

Never made this leg of the flight since we rebooked through United instead. Did not make it to immigration/US custom due to the delay. Had to spend the night on our own dime in Toronto

Booked flight was cancelled. Was rebooked but sat in airport for several hours for new departure.

United did not permit online check-in from home as document scans were not getting uploaded. This should be fixed their app

Everything you need to know for your flight from Montreal to San Francisco

Information on your arrival and departure airports

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