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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco from C$ 273

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 23/8. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SFO
2 Aug — 9 Aug1
1 adult

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 Thursday or Friday and return on a Friday

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 28 July 2025.

Round-trip from

C$ 451

One-way from

C$ 273

Popular in

December

Cheapest in

April

Average price

C$ 647

Good round-trip deal

C$ 924 or less

Good one-way deal

C$ 499 or less
WestJet
  • WestJet
  • 17/8-26/8
  • 3 total stops
  • 22h 35m total
  • Montreal to San Francisco
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American Airlines
  • American Airlines
  • 23/8
  • 2 total stops
  • 11h 17m total
  • Montreal to San Francisco
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Highest demand for flights based on searches. 7% potential increase in price (C$ 64 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 23 potential savings vs. average RT price).
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Average for round-trip flights in July 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 28 July 2025.

Sun 17/86:45 a.m.YUL - SFO
1 stop8h 38mMultiple Airlines
Tue 26/87:30 a.m.SFO - YUL
2 stops13h 57mMultiple Airlines
Deal found 26/7C$ 451
Mon 8/97:00 a.m.YUL - SFO
1 stop13h 14mWestJet
Wed 17/912:50 p.m.SFO - YUL
1 stop8h 51mWestJet
Deal found 27/7C$ 453
Mon 18/86:30 p.m.YUL - SFO
Nonstop6h 12mUnited Airlines
Sun 24/811:45 p.m.SFO - YUL
Nonstop5h 31mUnited Airlines
Deal found 28/7C$ 458
Tue 28/105:50 p.m.YUL - SFO
Nonstop6h 32mAir Canada
Sat 22/114:15 p.m.SFO - YUL
1 stop13h 11mAir Canada
Deal found 27/7C$ 464
Tue 14/106:41 p.m.YUL - SFO
2 stops31h 33mDelta
Tue 4/1111:58 a.m.SFO - YUL
1 stop9h 00mDelta
Deal found 27/7C$ 477
Mon 18/83:44 p.m.YUL - SFO
1 stop19h 54mAmerican Airlines
Sun 24/812:45 a.m.SFO - YUL
1 stop11h 09mAmerican Airlines
Deal found 28/7C$ 478
Tue 12/87:40 p.m.YUL - SFO
2 stops19h 43mPorter Airlines
Mon 18/81:25 p.m.SFO - YUL
1 stop8h 12mPorter Airlines
Deal found 26/7C$ 504

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 629,999 searches. Data last updated 28 July 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

Sun 17/8

6:45 a.m.-12:23 p.m.

1 stop8h 38m

San Francisco

Tue 26/8

7:30 a.m.-12:27 a.m.

2 stops13h 57m

C$ 451

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 8/9

7:00 a.m.-5:14 p.m.

1 stop13h 14m

San Francisco

Wed 17/9

12:50 p.m.-12:41 a.m.

1 stop8h 51m

C$ 453

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 18/8

6:30 p.m.-9:42 p.m.

Nonstop6h 12m

San Francisco

Sun 24/8

11:45 p.m.-8:16 a.m.

Nonstop5h 31m

C$ 458

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 18/8

9:50 p.m.-10:38 a.m.

1 stop15h 48m

San Francisco

Mon 25/8

7:30 a.m.-6:21 p.m.

1 stop7h 51m

C$ 467

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Tue 14/10

7:00 a.m.-5:47 p.m.

1 stop13h 47m

San Francisco

Wed 5/11

6:00 a.m.-11:14 p.m.

2 stops14h 14m

C$ 477

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Mon 18/8

3:44 p.m.-8:38 a.m.

1 stop19h 54m

San Francisco

Sun 24/8

12:45 a.m.-2:54 p.m.

1 stop11h 09m

C$ 478

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Wed 3/9

6:45 a.m.-12:23 p.m.

1 stop8h 38m

San Francisco

Thu 26/2

1:40 p.m.-12:35 a.m.

1 stop7h 55m

C$ 499

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sat 23/8

2:35 p.m.-10:52 p.m.

2 stops11h 17m

C$ 273

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Sun 31/8

7:00 a.m.-5:32 p.m.

1 stop13h 32m

C$ 274

MontrealSan Francisco

YUL - SFO

YULSFO

Montreal Pierre Elliott Trudeau Intl

Thu 9/10

7:00 a.m.-12:05 a.m.

3 stops20h 05m

C$ 277

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/7

Showing 1-10 of 14 results
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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 25 July 2025.

The price you pay for your flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 26 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 C$ 276). Flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco in December is currently the most expensive (average of C$ 368). 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 28 July 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 61% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Pierre Elliott Trudeau Intl to San Francisco. Price data was last updated on 27 July 2025.

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to San Francisco flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 28 July 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 (5 on average).

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

Share of one-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 97% of one-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 C$ 489.

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 Vancouver (YVR) have the shortest average one-way travel time for 1-stop routes: 3h 46m.

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 34m.

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 28 July 2025.
See what other customers who have flown with Porter Airlines,Delta, andUnited Airlines from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
316 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Crew

8.7

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
316 reviews
Porter Airlines
8.0
Very good
316 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Crew

8.7

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
Delta
8.0
Very good
7,971 reviews
Porter Airlines
8.0
Very good
316 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Crew

8.7

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
8,893 reviews
Porter Airlines
8.0
Very good
316 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Crew

8.7

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
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
8.0
Very good
316 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Crew

8.7

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
WestJet
7.2
Good
2,968 reviews
Porter Airlines
8.0
Very good
316 reviews
Check prices

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Crew

8.7

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?

    Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Montreal Pierre Elliott Trudeau Intl. On average, San Francisco has 8 inbound flights from Montreal Pierre Elliott Trudeau Intl per day from 6 airlines. San Francisco is conveniently located just 19.0 km from San Francisco’s city centre.

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

    Flying on WestJet is currently your cheapest option to San Francisco, with prices starting at C$ 453. Additional round-trip tickets that might be worth considering are offered by United Airlines and Air Canada, with the lowest prices starting at C$ 458 and C$ 467, respectively. These flights start at 20% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as C$ 273. However, be on the lookout for offers from Delta and WestJet, as they are both options that can get you from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco for a low price.

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

    No one likes to see their flight delayed. When booking a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco consider choosing Air New Zealand (79%), Brussels Airlines (76%) or Air Canada (74%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay C$ 2,816 for a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco. The cheapest flight overall is C$ 271 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Francisco) is currently priced at C$ 334.

  • 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 C$ 276). Flying from Montreal Pierre Elliott Trudeau Intl Airport to San Francisco in December is currently the most expensive (average of C$ 368). 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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Richmond
Newark
Alameda
Redwood City
Burlingame
San Bruno
South San Francisco
Scotts Valley
Novato
Belmont
Millbrae
Santa Clara
Vallejo

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Fly from Pierre Elliott Trudeau Intl to San Francisco on these airlines

Choose from the following airlines for your flight from Pierre Elliott Trudeau Intl to San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 28 July 2025.
Air Canada flights from Montreal Pierre Elliott Trudeau Intl to San Francisco
United Airlines flights from Montreal Pierre Elliott Trudeau Intl to San Francisco
Air Transat flights from Montreal Pierre Elliott Trudeau Intl to San Francisco

Top 6 airlines flying from Pierre Elliott Trudeau Intl to San Francisco

Discover the top 6 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 629,999 searches. Data last updated 28 July 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 237AverageC$ 615FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Porter AirlinesCheapestC$ 302AverageC$ 391FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 330AverageC$ 387FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 429AverageC$ 634FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 431AverageC$ 636FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air TransatCheapestC$ 498AverageC$ 534FlexibilityNo cancel feeOn-time50%
Search Air Transat flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to San Francisco?

Cheapflights makes it easy to find Pierre Elliott Trudeau Intl to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Pierre Elliott Trudeau Intl to San Francisco?

Cheapflights simply makes it quick and affordable to book flights from Pierre Elliott Trudeau Intl to San Francisco by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Pierre Elliott Trudeau Intl to San Francisco with no change fees?

Need flexible booking options for your flight to San Francisco from Pierre Elliott Trudeau Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Pierre Elliott Trudeau Intl to San Francisco become cheaper?

Not ready to book yet? You can track prices for flights from Pierre Elliott Trudeau Intl to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

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