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$149+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SAN
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to San Diego are usually found in May or December, booked 57 days in advance, depart on a Friday or Sunday and return on a Tuesday

Cheap 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 September 11, 2025.

Round-trip from

$303
(American Airlines)

One-way from

$149
(Kiwi.com)

Popular in

November

Cheapest in

May

Average price

$394

Good one-way deal

$207 or less
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
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Highest demand for flights based on searches. 5% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to San Diego.
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Find 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 September 11, 2025.

This Air Canada deal was found by Cheapflights users on 9/9. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:00 amYUL - SAN
1 stop8h 38mAir Canada
Sun 12/1412:25 pmSAN - YUL
1 stop9h 07mAir Canada
Deal found 9/9$302
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/307:29 amYUL - SAN
1 stop13h 37mAmerican Airlines
Mon 11/310:23 pmSAN - YUL
1 stop12h 23mAmerican Airlines
Deal found 9/9$303
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/43:00 pmYUL - SAN
2 stops11h 44mUnited Airlines
Fri 11/75:50 pmSAN - YUL
2 stops16h 38mUnited Airlines
Deal found 9/9$305
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:15 amYUL - SAN
1 stop12h 35mUnited Airlines
Sat 10/117:28 pmSAN - YUL
1 stop9h 48mUnited Airlines
Deal found 9/9$314
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 10/77:29 amYUL - SAN
1 stop13h 37mAmerican Airlines
Sun 10/126:16 amSAN - YUL
1 stop7h 23mAmerican Airlines
Deal found 9/9$317
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/236:15 amYUL - SAN
2 stops11h 48mUnited Airlines
Tue 9/306:00 pmSAN - YUL
1 stop11h 16mUnited Airlines
Deal found 9/9$320
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:15 amYUL - SAN
1 stop8h 25mUnited Airlines
Fri 10/1010:30 pmSAN - YUL
1 stop9h 10mUnited Airlines
Deal found 9/9$325
This lol.travel deal was found by Cheapflights users on 9/9. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/189:45 amYUL - SAN
1 stop15h 29mUnited Airlines
Sun 10/2610:30 pmSAN - YUL
1 stop12h 30mUnited Airlines
Deal found 9/9$327
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/99:45 amYUL - SAN
1 stop9h 05mUnited Airlines
Sat 10/114:07 pmSAN - YUL
2 stops15h 33mUnited Airlines
Deal found 9/9$328
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:00 amYUL - SAN
3 stops19h 34mMultiple Airlines
Mon 9/226:15 amSAN - YUL
2 stops15h 26mMultiple Airlines
Deal found 9/9$330
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 10/306:00 amYUL - SAN
1 stop11h 32mDelta
Mon 11/310:20 pmSAN - YUL
1 stop10h 42mDelta
Deal found 9/9$335
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/196:15 amYUL - SAN
1 stop15h 05mUnited Airlines
Fri 9/199:45 pmSAN - YUL
1 stop19h 00mUnited Airlines
Deal found 9/9$340

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 September 11, 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

Tue 11/4

3:00 pm-11:44 pm

2 stops11h 44m

San Diego

Fri 11/7

5:50 pm-1:28 pm

2 stops16h 38m

$305

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sat 10/11

6:15 am-3:50 pm

1 stop12h 35m

San Diego

Sat 10/11

7:28 pm-8:16 am

1 stop9h 48m

$314

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sat 10/18

6:15 am-10:14 pm

1 stop18h 59m

San Diego

Sun 10/26

8:10 am-4:35 pm

Nonstop5h 25m

$320

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 10/6

6:15 am-6:30 pm

1 stop15h 15m

San Diego

Tue 10/14

8:39 pm-10:40 am

2 stops11h 01m

$320

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Sat 10/11

6:15 am-10:14 pm

1 stop18h 59m

San Diego

Sat 10/18

8:08 pm-8:16 am

1 stop9h 08m

$320

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 10/7

6:15 am-11:40 am

1 stop8h 25m

San Diego

Fri 10/10

10:30 pm-10:40 am

1 stop9h 10m

$325

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Wed 2/25

3:00 pm-11:13 pm

1 stop11h 13m

San Diego

Fri 2/27

10:30 pm-1:46 pm

1 stop12h 16m

$326

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Thu 10/30

6:00 am-2:32 pm

1 stop11h 32m

San Diego

Mon 11/3

10:20 pm-12:02 pm

1 stop10h 42m

$335

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Tue 9/23

6:15 am-3:03 pm

2 stops11h 48m

San Diego

Tue 9/23

5:56 pm-8:16 am

1 stop11h 20m

$345

MontrealSan Diego

YUL - SAN

YULSAN

Montreal Pierre Elliott Trudeau Intl

Mon 9/22

6:30 pm-12:15 am

1 stop8h 45m

San Diego

Tue 9/23

10:41 am-9:29 pm

1 stop7h 48m

$346

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 20 results
1
2

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-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.
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

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 August 29, 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 30 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, August is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego (average of $286). Flying from Montreal Pierre Elliott Trudeau Intl Airport to San Diego in March is currently the most expensive (average of $366). 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 September 11, 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 50% on your trip compared to booking a flight at noon.

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 September 11, 2025.
See what other customers who have flown with Delta, United Airlines, and Air Canada 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
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

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
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

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
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

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 1 inbound flight from Montreal Pierre Elliott Trudeau Intl per day. You should also have plenty of airline options to choose from since 3 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 11h 44m. There are 2453 mi between Montreal Pierre Elliott Trudeau Intl Airport and San Diego.

  • 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 ($233), United Airlines ($263), and Delta ($293) 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 40% less than the average price by searching for these airlines.

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

    The cheapest flight price from Montreal Pierre Elliott Trudeau Intl Airport to San Diego is $207. On average you can expect to pay $416. The most popular route, (Montreal Pierre Elliott Trudeau Intl - San Diego), can usually be booked for $294.

  • 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, August is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego (average of $286). Flying from Montreal Pierre Elliott Trudeau Intl Airport to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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Top 3 airlines flying from Pierre Elliott Trudeau Intl to San Diego

Discover the top 3 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$233Average$405FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$263Average$388FlexibilityNo cancel feeOn-time69%
DeltaCheapest$293Average$366FlexibilityNo cancel feeOn-timeN/A

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