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$181+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to San Diego (SAN)

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SAN
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to San Diego are usually found in May or August, booked 88 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap flight deals from Pierre Elliott Trudeau Intl to San Diego

Cheapest flights from Pierre Elliott Trudeau Intl to San Diego
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This American Airlines deal was found by Cheapflights users on 12/17. 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 12/263:59 pmYUL - SAN
2 stops29h 11mAmerican Airlines
Mon 1/53:38 pmSAN - YUL
2 stops19h 07mAmerican Airlines
Deal found 12/17$721
This Delta deal was found by Cheapflights users on 12/17. 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.
Fri 12/262:40 pmYUL - SAN
1 stop12h 15mDelta
Thu 1/110:20 pmSAN - YUL
1 stop10h 39mDelta
Deal found 12/17$725
This Delta deal was found by Cheapflights users on 12/16. 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.
Sun 12/2812:50 pmYUL - SAN
1 stop12h 19mDelta
Sun 1/410:20 pmSAN - YUL
1 stop10h 44mDelta
Deal found 12/16$728
This Delta deal was found by Cheapflights users on 12/17. 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.
Fri 12/262:40 pmYUL - SAN
1 stop12h 15mDelta
Sat 1/310:20 pmSAN - YUL
1 stop10h 39mDelta
Deal found 12/17$729
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/263:59 pmYUL - SAN
2 stops29h 11mAmerican Airlines
Sun 1/49:50 amSAN - YUL
2 stops26h 20mAmerican Airlines
Deal found 12/17$752
This Delta deal was found by Cheapflights users on 12/16. 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.
Sun 12/2812:50 pmYUL - SAN
1 stop12h 19mDelta
Sat 1/310:20 pmSAN - YUL
1 stop10h 39mDelta
Deal found 12/16$759
This Delta deal was found by Cheapflights users on 12/17. 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.
Sun 12/2812:50 pmYUL - SAN
2 stops23h 05mDelta
Thu 1/110:20 pmSAN - YUL
1 stop10h 39mDelta
Deal found 12/17$782
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/257:30 amYUL - SAN
1 stop14h 23mAmerican Airlines
Sun 1/412:39 pmSAN - YUL
2 stops20h 41mAmerican Airlines
Deal found 12/17$786
This American Airlines deal was found by Cheapflights users on 12/17. 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 12/263:59 pmYUL - SAN
2 stops29h 11mAmerican Airlines
Fri 1/26:20 amSAN - YUL
1 stop13h 38mAmerican Airlines
Deal found 12/17$790
This Delta deal was found by Cheapflights users on 12/17. 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.
Fri 12/2612:50 pmYUL - SAN
1 stop12h 19mDelta
Sun 1/410:20 pmSAN - YUL
1 stop10h 44mDelta
Deal found 12/17$794

Find flight deals from Pierre Elliott Trudeau Intl to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) to San Diego (SAN). 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$378
(Kiwi.com)

One-way from

$181
(Delta)

Popular in

November

Cheapest in

May

Average price

$335
Provider with most accurate pricing for Montreal Pierre Elliott Trudeau Intl-San Diego flight deals.
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Provider most trusted by Cheapflights users for Montreal Pierre Elliott Trudeau Intl-San Diego flights.
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From Montreal Pierre Elliott Trudeau Intl to San Diego
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One-way flight from Montreal Pierre Elliott Trudeau Intl to San Diego
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl to San Diego 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 December 18, 2025.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to San Diego that are best for you.

Fly from

Pierre Elliott Trudeau Intl

Fly to

San Diego

Route

Depart

Return

Price

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sat 1/31

6:00 am-3:36 pm

1 stop12h 36m

San Diego

Wed 2/4

7:52 pm-1:28 pm

2 stops14h 36m

$379

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Fri 1/16

4:45 pm-10:27 am

2 stops20h 42m

San Diego

Fri 1/23

10:00 pm-3:16 pm

1 stop14h 16m

$379

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 1/13

9:15 am-5:28 pm

2 stops11h 13m

San Diego

Tue 1/20

7:52 pm-2:00 pm

2 stops15h 08m

$396

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sun 1/11

7:00 am-5:39 pm

1 stop13h 39m

San Diego

Tue 1/20

1:29 pm-11:45 am

2 stops19h 16m

$402

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sun 1/11

7:00 am-5:39 pm

1 stop13h 39m

San Diego

Sat 1/17

6:15 am-1:32 pm

2 stops28h 17m

$405

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

9:34 am-10:45 pm

2 stops16h 11m

San Diego

Mon 1/19

10:00 pm-12:12 pm

1 stop11h 12m

$411

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 1/6

7:30 pm-7:39 pm

2 stops27h 09m

San Diego

Sun 1/18

10:00 pm-12:12 pm

1 stop11h 12m

$411

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

9:34 am-10:45 pm

2 stops16h 11m

San Diego

Fri 1/16

10:30 pm-1:32 pm

1 stop12h 02m

$411

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 1/6

7:30 pm-1:48 pm

2 stops21h 18m

San Diego

Fri 1/16

10:30 pm-1:32 pm

1 stop12h 02m

$411

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

9:34 am-10:45 pm

2 stops16h 11m

San Diego

Tue 1/20

6:30 am-4:55 pm

1 stop7h 25m

$411

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 21 results
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Compare providers for flights from Pierre Elliott Trudeau Intl to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pierre Elliott Trudeau Intl to San Diego in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Montreal Pierre Elliott Trudeau Intl Airport-San Diego flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Montreal Pierre Elliott Trudeau Intl Airport-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-San Diego flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Montreal Pierre Elliott Trudeau Intl Airport-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Pierre Elliott Trudeau Intl to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego 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 Diego

How far ahead should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to San Diego. Price data was last updated on December 12, 2025.

The price you pay for your flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 88 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 Diego?

Currently, April is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego (average of $134). Flying from Montreal Pierre Elliott Trudeau Intl Airport to San Diego in September is currently the most expensive (average of $257). 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 SAN?

Find hourly flight availability from Pierre Elliott Trudeau Intl to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Diego in the afternoon. If you’re flexible enough to do this you can expect to save up to 46% on your trip compared to booking a flight at noon.

The best insider tips for Montreal Pierre Elliott Trudeau Intl Airport to San Diego flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Montreal Pierre Elliott Trudeau Intl Airport to San Diego 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
SAN

For a quick exit, SAN's close proximity to downtown makes taxis and rideshares convenient, though traffic can be an issue.

Read more about SANBy Blane Bachelor
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
Blane Bachelor

Blane Bachelor

Expert on SAN

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

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 Diego. Reviews last updated December 18, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Montreal Pierre Elliott Trudeau Intl Airport to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,009 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
7.9
Good
8,009 reviews
Delta
7.9
Good
8,009 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
9,093 reviews
Delta
7.9
Good
8,009 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
11,054 reviews
Delta
7.9
Good
8,009 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.1
Good
10,534 reviews
Delta
7.9
Good
8,009 reviews

Crew

8.5

Food

7.3

Overall

7.9

Comfort

7.9

Boarding

8.1

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to San Diego. 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 Diego from Montreal Pierre Elliott Trudeau Intl?

    San Diego (SAN) is the airport you will fly into if you book a flight from Montreal Pierre Elliott Trudeau Intl to San Diego. You should not have trouble finding flights to San Diego from Montreal Pierre Elliott Trudeau Intl; the airport handles an average of 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day. You should also have plenty of airline options to choose from since 4 airlines have flights to the San Diego airport from Montreal Pierre Elliott Trudeau Intl. It is only a 2.6 mi journey from San Diego (SAN) to San Diego’s city center.

  • How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego?

    Departing from Montreal Pierre Elliott Trudeau Intl Airport to San Diego will take you 12h 36m. There are 2453 mi between Montreal Pierre Elliott Trudeau Intl Airport and San Diego. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    According to our current data, Air Canada ($203), Delta ($237), and United Airlines ($247) offers the cheapest pricing from Montreal Pierre Elliott Trudeau Intl Airport to San Diego. You may be able to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Diego for 44% 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 Diego one-way?

    $155 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $158 and $165, respectively.

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to San Diego that include hotel bookings?

    Yes. In addition to deals on Pierre Elliott Trudeau Intl to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pierre Elliott Trudeau Intl to San Diego?

    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 Diego.

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to San Diego?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl to San Diego 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 Diego?

    Currently, April is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego (average of $134). Flying from Montreal Pierre Elliott Trudeau Intl Airport to San Diego in September is currently the most expensive (average of $257). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
National City
La Mesa
Poway
Julian
Lemon Grove

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Alternative routes for Pierre Elliott Trudeau Intl to San Diego

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

Discover the top 4 airlines that operate flights from Pierre Elliott Trudeau Intl to San Diego. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$235Average$419FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$263Average$389FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$271Average$389FlexibilityNo cancel feeOn-time71%
DeltaCheapest$293Average$407FlexibilityNo cancel feeOn-timeN/A

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