$150 Cheap Flights from Montreal (YUL) to San Diego (SAN)

View $150 flight on Fri, May 9, 2025Opens in a new window

Popular airlines from Montreal–Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN)

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Montreal to San Diego (YUL-SAN)

Prices were available within the past 7 days and start at $150 for one-way flights and $254 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Aug 18 - Sun, Aug 31
YUL
Montreal
SAN
San Diego
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select Air Canada flight, departing Mon, Aug 18 from Montreal to San Diego, returning Sun, Aug 31, priced at $254 found 2 days ago
Air Canada
Thu, Jun 5 - Sat, Jun 14
YUL
Montreal
SAN
San Diego
$257 Roundtrip, found 5 days ago
$257
Roundtrip
found 5 days ago
Select Air Canada flight, departing Thu, Jun 5 from Montreal to San Diego, returning Sat, Jun 14, priced at $257 found 5 days ago
Air Canada
Thu, Aug 21 - Sun, Aug 31
YUL
Montreal
SAN
San Diego
$259 Roundtrip, found 2 days ago
$259
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Aug 21 from Montreal to San Diego, returning Sun, Aug 31, priced at $259 found 2 days ago
Air Canada
Thu, May 22 - Sun, Aug 31
YUL
Montreal
SAN
San Diego
$263 Roundtrip, found 6 days ago
$263
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, May 22 from Montreal to San Diego, returning Sun, Aug 31, priced at $263 found 6 days ago
Air Canada
Sat, May 10 - Tue, May 27
YUL
Montreal
SAN
San Diego
$263 Roundtrip, found 3 hours ago
$263
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Sat, May 10 from Montreal to San Diego, returning Tue, May 27, priced at $263 found 3 hours ago
Air Canada
Tue, Aug 12 - Sun, Aug 24
YUL
Montreal
SAN
San Diego
$267 Roundtrip, found 2 days ago
$267
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Aug 12 from Montreal to San Diego, returning Sun, Aug 24, priced at $267 found 2 days ago
Air Canada
Tue, Jun 3 - Wed, Jun 4
YUL
Montreal
SAN
San Diego
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select Air Canada flight, departing Tue, Jun 3 from Montreal to San Diego, returning Wed, Jun 4, priced at $269 found 6 days ago
Air Canada
Mon, Aug 18 - Sun, Aug 24
YUL
Montreal
SAN
San Diego
$271 Roundtrip, found 5 days ago
$271
Roundtrip
found 5 days ago
Select Air Canada flight, departing Mon, Aug 18 from Montreal to San Diego, returning Sun, Aug 24, priced at $271 found 5 days ago
Porter Airlines
Wed, Jun 4 - Wed, Jun 18
YUL
Montreal
SAN
San Diego
$271 Roundtrip, found 5 days ago
$271
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Wed, Jun 4 from Montreal to San Diego, returning Wed, Jun 18, priced at $271 found 5 days ago
United
Tue, Sep 2 - Tue, Sep 16
YUL
Montreal
SAN
San Diego
$271 Roundtrip, found 2 days ago
$271
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 2 from Montreal to San Diego, returning Tue, Sep 16, priced at $271 found 2 days ago
Flights from Montreal (YUL) to San Diego (SAN)
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
San Diego Intl.
Airlines serving
Air Canada, American Airlines, Delta, Porter Airlines, United, WestJet
Roundtrip price
$254
Distance
2455 mi

Montreal to San Diego Flights

The cheapest times to fly from Montreal to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Montreal to San Diego are during the month of August. You can find some of the cheapest flights from Montreal to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Montreal to San Diego

Sunday is one of the best days to book for cheap flights from Montreal to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Montreal to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Montreal to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $150 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Montreal to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Montreal to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Pierre Elliott Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN) cost?
You can pick up cheap return fares starting at $492 from Pierre Elliott Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a United flight leaving YUL on May 22 2025 and touching down at SAN. The price was last updated on April 28 2025 and has not changed since.
What is the cheapest month to fly from YUL to SAN?
The cheapest flights from YUL to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from YUL to SAN?
At the moment, the cheapest carrier offering one-way flights from YUL to SAN is Air Canada. You can jet off on this route from $187. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from YUL on April 30 2025. Prices were last updated on April 28 2025 and have not changed since.
How many flights per day from Pierre Elliott Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN)?
There aren’t any daily direct flights departing from Pierre Elliott Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you’ll be cruising above the clouds in no time.
What day of the week has the most flights from YUL to SAN?
You’ll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Pierre Elliott Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN)?
To avoid possible delays on the Pierre Elliott Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN) route, fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from Pierre Elliott Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN) last-minute?
Last-minute fares from YUL to SAN are generally more expensive. To secure the lowest prices, start looking for flights ahead of time. That said, if you can play around with your travel dates, it’s possible to land a cheap fare right before your journey.
Is it cheaper to book a YUL to SAN flight and hotel package?
Opting for a YUL to SAN flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Select from our impressive range of stays and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Pierre Elliott Trudeau Intl. Airport (YUL) to San Diego Intl. Airport (SAN)?
Typically, it’s possible to reschedule or cancel your YUL to SAN flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are possible and if any costs are involved. You’ll also find more information on our Customer Service portal.

Explore a world of travel with Expedia

*Available to One Key members.