YUL - SFO

C$ 312 Find Cheap Flights from Montreal to San Francisco – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 485
Typical prices: C$ 580-C$ 904
WestJet
Wed 17/10Sat 20/10
YUL - SFO • 1 stop
Cheapest direct flights
C$ 635
Typical prices: C$ 608-C$ 928
Air Canada
Tue 20/11Tue 27/11
YUL - SFO • Direct
Direct flights
You can fly direct with Air Canada and United Airlines. Average duration is 6h 16m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 76% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 14 weeks in advance save around 43% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 19% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg C$ 516 (round-trip)
Shortest trip • 8h 07m (one-way)
Insights
Insights
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We hope you enjoy your trip to San Francisco!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Montreal to San Francisco

Sat, 17 Oct - Tue, 20 Oct
WestJet Logo
5:30 p.m. - 9:55 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
31h 25m1 stop Calgary
WestJet Logo
6:00 a.m. - 7:05 a.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
22h 05m1 stop Calgary
C$ 485WestJet
Sat, 17 Oct - Tue, 20 Oct
WestJet Logo
7:20 p.m. - 12:00 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
19h 40m2 stops Toronto Pearson Intl Calgary
WestJet Logo
6:00 a.m. - 7:05 a.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
22h 05m1 stop Calgary
C$ 510WestJet
Wed, 28 Oct - Fri, 30 Oct
Porter Airlines Logo
6:45 a.m. - 12:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
9h 00m1 stop Toronto Pearson Intl
Porter Airlines Logo
1:45 p.m. - 12:35 a.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
7h 50m1 stop Toronto Pearson Intl
C$ 513Porter Airlines
Tue, 27 Oct - Fri, 30 Oct
Porter Airlines Logo
6:45 a.m. - 12:45 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
9h 00m1 stop Toronto Pearson Intl
Porter Airlines Logo
1:45 p.m. - 12:35 a.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
7h 50m1 stop Toronto Pearson Intl
C$ 513Porter Airlines
Fri, 2 Oct - Sat, 10 Oct
Multiple Airlines Logo
6:45 a.m. - 12:20 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
8h 35m1 stop Toronto Pearson Intl
Multiple Airlines Logo
1:00 p.m. - 7:05 a.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
15h 05m1 stop Calgary
C$ 515Multiple Airlines
Fri, 30 Oct - Fri, 6 Nov
Multiple Airlines Logo
6:45 a.m. - 4:50 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
13h 05m2 stops Toronto Pearson Intl Calgary
Multiple Airlines Logo
1:45 p.m. - 12:35 a.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
7h 50m1 stop Toronto Pearson Intl
C$ 519Multiple Airlines
Wed, 6 Jan - Tue, 12 Jan
Air Canada Logo
8:45 a.m. - 4:06 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
10h 21m1 stop Vancouver Intl
Air Canada Logo
8:25 a.m. - 4:46 p.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
5h 21mdirect
C$ 634Air Canada
Fri, 25 Sep - Mon, 28 Sep
Air Canada Logo
5:40 p.m. - 8:47 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
6h 07mdirect
Air Canada Logo
11:10 a.m. - 7:47 p.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
5h 37mdirect
C$ 635Air Canada
Tue, 13 Oct - Tue, 20 Oct
Delta Logo
6:00 a.m. - 2:20 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
11h 20m1 stop Detroit Metropolitan Wayne County
Delta Logo
8:58 p.m. - 11:38 a.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
11h 40m2 stops Seattle/Tacoma Intl Atlanta Hartsfield-Jackson
C$ 753Delta
Thu, 17 Dec - Wed, 6 Jan
Delta Logo
12:41 p.m. - 10:42 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SFO San Francisco
13h 01m1 stop Atlanta Hartsfield-Jackson
Delta Logo
10:45 p.m. - 12:15 p.m.SFO  San Francisco-YUL Montreal Pierre Elliott Trudeau Intl
10h 30m1 stop Detroit Metropolitan Wayne County
C$ 774Delta
Booking Insights

Price, demand, and travel trends for Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco with more confidence.

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

Round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco start at C$ 485. Prices are below average for this route right now, with typical round-trip fares ranging from C$ 580 to C$ 904. The lowest price found in the past 5 days was C$ 485 on WestJet.

What's the cheapest day of the week to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

Wednesday is the cheapest day of the week to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco and is 8% cheaper than the average day. Sunday is the most expensive day with flight prices 9% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • January is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco at C$ 580 round-trip.
  • June (C$ 836) and July (C$ 803) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 44% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco the cheapest?

Flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco are cheapest 14 weeks before departure. Booking in this window typically costs about 43% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Montreal to San Francisco

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada and United Airlines

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.

Mark Stachiew

Mark Stachiew

Expert on YUL

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Blane Bachelor

Blane Bachelor

Expert on SFO

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.

Key details for Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights

Low season

February

Cheapest flight

C$ 312
Best time to beat the crowds (2% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flights from Montreal Pierre Elliott Trudeau Intl Airport 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

Your Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • 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.

  • Which airlines offer extra legroom and free seat selection on Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights?

    Among airlines operating Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights:

    • Air Canada: offers extra legroom; offers free seat selection
    • United Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines are available on the route from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    2 airlines operate flights between Montreal Pierre Elliott Trudeau Intl Airport and San Francisco. The airlines offering direct flights on this route include:

    • Air Canada
    • United Airlines

  • Which airports can I use when flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    Flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco usually depart from Montreal Pierre Elliott Trudeau Intl (YUL) and arrive at San Francisco (SFO).

  • Which airlines include bags at no extra cost on Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Air Canada: a carry-on bag and a checked bag in Economy Class
    • United Airlines: a carry-on bag and a checked bag in Economy Class
    • Lufthansa: a carry-on bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

  • Which cabin classes can I book on flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    Three cabin classes are available on flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco:

    • Economy Class
    • Business Class
    • First Class

  • How much can I save by taking a layover when flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 516 round-trip via Calgary (YYC), compared to C$ 748 for direct.

  • What is the standard checked bag allowance on flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 34–C$ 127 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    The Airbus A220-300 family is used most often on this route, operated mainly by United Airlines and Air Canada. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

  • Which airports do connecting flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco pass through?

    One-stop flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco most commonly connect through:

    • Toronto Pearson Intl (YYZ) – 84% of one-stop connections
    • Calgary (YYC) – 5% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) – 3% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 2% of one-stop connections

    Toronto Pearson Intl (YYZ) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    Yes. Being flexible with your travel dates can save you up to 16% on the Montreal Pierre Elliott Trudeau Intl Airport to San Francisco route. Wednesday is the cheapest departure day at C$ 663 round-trip on average, while Sunday is the most expensive at C$ 785, a difference of C$ 122. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • At what point is a flight considered delayed on the route from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Montreal Pierre Elliott Trudeau Intl Airport to San Francisco route, 26% of flights were delayed in the past 3 months, with delays averaging 2 hours 28 minutes.

  • How are flight departures from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco spread across the day?

    Evening is the busiest departure period on Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights, with 100% leaving in that window. Morning departures account for 0%, Afternoon flights for 0%, and Night flights for 0%.

  • Which popular places can I visit in San Francisco?

    Some of the most popular sights in San Francisco are Fisherman's Wharf, Union Square, and Moscone Center. These are among the most viewed places in San Francisco on KAYAK.

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

    These are the earliest and latest flight times available from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco:

    • Earliest: departs at 8:10 am and lands at 2:26 pm
    • Latest: departs at 6:35 pm and lands at 12:51 am.

    The flight takes about 6h 16m.

  • How expensive are last-minute Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights?

    Last-minute fares on this route – booked within 2 weeks of departure – run 44% above the route average of C$ 719. Book 14 weeks before departure for the lowest fares.

  • How long does a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco take?

    A direct flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco takes 6h 16m, covering 6,554 km.

  • Do I need a passport to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How are flight prices from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco looking right now?

    One-way fares from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco are currently lower than usual. Average one-way flight prices are about C$ 376, which is 24% below the typical average for this route.

  • How do delay rates compare for morning and evening flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

  • How much time can I save by choosing a different layover airport when travelling from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco?

    Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 8h 07m, compared with 8h 32m via Toronto Pearson Intl (YYZ) and 9h 58m via Chicago O'Hare Intl (ORD).

  • What is the time difference between Montreal Pierre Elliott Trudeau Intl Airport and San Francisco?

    San Francisco is 3 hours behind Montreal Pierre Elliott Trudeau Intl Airport (Pacific Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What car rental options are available at San Francisco Airport (SFO)?

    San Francisco Airport (SFO) hosts 5 major car rental companies, with daily rates starting from around C$ 21 for economy cars. Top options include:
    • Thrifty
    • Europcar
    • Dollar
    • Hertz
    • Fox

  • How much should I expect to pay for a Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flight?

    Round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco range from C$ 580 to C$ 904, with an average of C$ 719 over the past 12 months. Anything below C$ 580 counts as a good deal.

  • Which airlines offer Wi-Fi on Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights?

    Air Canada is the only airline on the Montreal Pierre Elliott Trudeau Intl Airport to San Francisco route offering in-flight Wi-Fi. Pricing depends on fare class.

Your guide to booking Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average C$ 663 – about C$ 122 less than Sunday (16% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 14 weeks before you fly. On this route, that window historically saves about 43% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Montreal Pierre Elliott Trudeau Intl Airport to San Francisco trip for January. Fares historically average C$ 580 round-trip in that month – typically C$ 257 less than the most expensive month, which is June (based on the last 12 months).
  • If arriving on time is high on your priority list, United Airlines is the strongest pick on this route. 76% of United Airlines flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco arrived on time in the past 3 months, slightly above the route's average on-time arrival rate of 74%. When flights on this route do arrive late, the average delay is 2 hours28 minutes, so choosing a carrier with strong on-time performance can make a difference on tight schedules.
  • If you have the time, taking a 1-stop flight through Calgary Airport (YYC) can be cheaper than flying direct. The cheapest layover option averages C$ 516 round-trip on this route – about C$ 231 less than direct flights (based on the last 12 months).
  • 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?

 
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,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more nonstop flights

Direct returns

San Francisco to Montreal Pierre Elliott Trudeau Intl

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more nonstop flights

More options for your flight from Montreal to San Francisco

Complete your trip to San Francisco with a hotel stay or car rental