YUL - SAN

$171 Find Cheap Flights from Montreal to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to San Diego departing on 4/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to San Diego, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to San Diego, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$285
Overall average: $394
American Airlines
Fri 4/17Tue 4/21
YUL - SAN • 1 stop
Cheapest non-stop
$310
Air Canada
Fri 5/1Sat 5/9
YUL - SAN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
United's Economy Plus offers 6 inches more legroom.
Pre-clear US customs at YUL; allow 20-30 minutes.
Expert advice
Expert advice
Expert advice
Expert advice
Nonstop flights
Mon, Tue, Thu, Fri, Sat, Sun
You can fly direct with Air Canada. Average duration is 0
Direct flights
Direct flights
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Direct flights
Direct flights
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Top airlines
Cheapest • from $285 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Top layover airports
Cheapest • Avg $385 (round-trip)
Shortest trip • 8h 06m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 25% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
Good to know
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Good to know
Good to know
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Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Montreal to San Diego

Fri, Apr 17 - Tue, Apr 21
American Airlines Logo
3:45 pm - 10:00 pm
YUL
-
SAN
9h 15m
1 stop
American Airlines Logo
6:40 am - 10:58 pm
SAN
-
YUL
13h 18m
1 stop
$285American Airlines
Wed, Apr 22 - Mon, Apr 27
American Airlines Logo
2:32 pm - 8:50 pm
YUL
-
SAN
9h 18m
1 stop
American Airlines Logo
10:40 pm - 11:44 am
SAN
-
YUL
10h 04m
1 stop
$298American Airlines
Fri, May 1 - Sat, May 9
Air Canada Logo
5:45 pm - 8:43 pm
YUL
-
SAN
5h 58mnonstop
Air Canada Logo
7:00 am - 3:31 pm
SAN
-
YUL
5h 31mnonstop
$310Air Canada
Fri, May 1 - Fri, May 8
Air Canada Logo
5:45 pm - 8:43 pm
YUL
-
SAN
5h 58mnonstop
Air Canada Logo
7:00 am - 3:31 pm
SAN
-
YUL
5h 31mnonstop
$311Air Canada
Fri, May 8 - Sun, May 10
Air Canada Logo
5:45 pm - 8:43 pm
YUL
-
SAN
5h 58mnonstop
Air Canada Logo
7:00 am - 3:31 pm
SAN
-
YUL
5h 31mnonstop
$313Air Canada
Tue, Apr 28 - Wed, May 6
Multiple Airlines Logo
7:15 am - 2:10 pm
YUL
-
SAN
9h 55m
1 stop
Multiple Airlines Logo
7:34 pm - 7:05 am
SAN
-
YUL
32h 31m
2 stops
$325Multiple Airlines
Fri, May 8 - Mon, May 11
Air Canada Logo
7:00 am - 12:18 pm
YUL
-
SAN
8h 18m
1 stop
Air Canada Logo
7:00 am - 3:31 pm
SAN
-
YUL
5h 31mnonstop
$326Air Canada
Sun, May 3 - Tue, May 12
Air Canada Logo
5:45 pm - 8:43 pm
YUL
-
SAN
5h 58mnonstop
Air Canada Logo
7:00 am - 3:31 pm
SAN
-
YUL
5h 31mnonstop
$332Air Canada
Sun, May 3 - Tue, May 12
Air Canada Logo
5:45 pm - 8:43 pm
YUL
-
SAN
5h 58mnonstop
Air Canada Logo
7:00 am - 3:31 pm
SAN
-
YUL
5h 31mnonstop
$333Air Canada
Sun, May 3 - Tue, May 12
Air Canada Logo
5:45 pm - 8:43 pm
YUL
-
SAN
5h 58mnonstop
Air Canada Logo
7:00 am - 3:31 pm
SAN
-
YUL
5h 31mnonstop
$335Air Canada
Booking Insights

KAYAK's insights & trends for Montreal to San Diego flights

Get data-powered insights and trends into flights from Montreal to San Diego to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Montreal to San Diego?

The average price of all round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to San Diego clicked on KAYAK for each day over the last 12 months.

For Montreal to San Diego, Sunday is the cheapest day to fly on average and Friday is the most expensive. Flying from San Diego back to Montreal, the best deals are generally found on Tuesday, with Saturday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Montreal Pierre Elliott Trudeau Intl Airport to San Diego is May, where tickets cost $299 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $440 and $433 respectively.

Can I save money by flying with a layover from Montreal Pierre Elliott Trudeau Intl Airport to San Diego?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $495, prices are generally cheapest when you fly direct.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego, you should book around 5 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Expert advice

Expert advice for your flight from Montreal to San Diego

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
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.

Brandon Schultz

Brandon Schultz

Expert on YUL and SAN

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Good to know

Low seasonFebruary
Cheapest flight$172
Best time to beat the crowds but there is an average 9% increase in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Montreal to San Diego

When to book flights from Montreal to San Diego

Are your dates flexible? Find out the best times to travel from Montreal to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Montreal to San Diego flights

  • What is the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego?

    In the last 3 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego was $171 for a one-way ticket and $285 for a round-trip.

  • Do I need a passport to fly between Montreal and San Diego?

    A passport is required to fly from Montreal to San Diego.

  • Which airlines offer Wi-Fi service onboard planes from Montreal to San Diego?

    Air Canada, and United Airlines offer inflight Wi-Fi service on the Montreal to San Diego flight route.

  • Which aircraft models fly most regularly from Montreal to San Diego?

    The Boeing 737 MAX 8 is the aircraft model that flies most regularly on the Montreal to San Diego flight route.

  • Which airline alliances offer flights from Montreal to San Diego?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Montreal and San Diego, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Montreal to San Diego, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Montreal to San Diego are Delta and United Airlines. With an average price for the route of $407 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $472 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Montreal to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Montreal to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Montreal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Montreal to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Montreal with another airline. Booking your flights between Montreal and SAN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Montreal Pierre Elliott Trudeau Intl Airport to San Diego

  • Looking for a cheap flight? 25% of our users found flights on this route for $184 or less one-way and $438 or less round-trip.

Prefer to fly direct from Montreal to San Diego?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Montreal Pierre Elliott Trudeau Intl to San Diego.
Find which airlines fly direct from Montreal Pierre Elliott Trudeau Intl Airport to San Diego Airport, which days they fly and book direct flights.

Direct departures

Montreal Pierre Elliott Trudeau Intl to San Diego

Monday

Air Canada

Air Canada

Tuesday

Air Canada

Air Canada

Thursday

Air Canada

Air Canada

Friday

Air Canada

Air Canada

Saturday

Air Canada

Air Canada

Sunday

Air Canada

Air Canada

See more direct flights

Direct returns

San Diego to Montreal Pierre Elliott Trudeau Intl

Monday

Air Canada

Air Canada

Tuesday

Air Canada

Air Canada

Wednesday

Air Canada

Air Canada

Friday

Air Canada

Air Canada

Saturday

Air Canada

Air Canada

Sunday

Air Canada

Air Canada

See more direct flights

Reviews of the top 4 airlines serving from Montreal to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Montreal to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Montreal to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8287 reviews
7.9Comfort
7.8Entertainment
8.1Boarding
7.2Food
8.5Crew
Airline reviews

Left a few minutes early. Got in 15 minutes early. Very attentive service on board. Very organized boarding.

10.0 ExcellentCharles, Mar 2026
ABQ - LAX
Read more Delta reviews

Left a few minutes early. Got in 15 minutes early. Very attentive service on board. Very organized boarding.

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Awful - both legs. The check in was awful, getting on the plane required walking down a spiral staircase (dangerous), then taking a bus about 5 miles out from the terminal. The seat was broken (I was in business), there was no internet during the flight (both legs). The aircraft was very old. I saw rust in some place, tape holding things up in the bathroom. This was an unacceptable experience for such a long haul flight.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

Terrible experience! delay 2 time and say i dont have ticket

It was amazing. I had several upgraded seats on my flight out. Everything went smooth with no delays.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

Flight attendants were friendly & good service, food sucks, seats uncomfortable, not many Asian movies or shows flying from Hong Kong

Flight attendants had a little attitude. Food tastes no good.

Overall we had a good experience during our flight from San Francisco to Houston.

it was a very short flight so my expectations were low.

Good flight. However, when booked flight with United, assumed the layover included by United in San Francisco of 1 hr and 40 minutes was sufficient . Not so and would recommend at least 2 hours or more. Needed to go through US immigration (very long lineups), then pick up bags, take all the way to another terminal, running because we did not have sufficient time. We made the flight because they held the door for us but luggage didn’t follow.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

They are always late and seats was also not having working charger

did not have enough meal for first class passengers so offer us snack

We were upgraded to Business Class. So comfortable with great service and food options

The flight was completely full. Crew was not happy. Everyone was rude and brusque. Travelling with an arm in a cast and seating in the first row of economy cabin (in front of the separation) I needed help retrieving my tray for the meal. A staff member literally threw the tray on my lap, without helping to take out the tray. Boarding was messy, with 300 people waiting in an encloses space with low ceiling. I will try to avoid AA next time I have a long flight.

The comfort of Business Class made this trip far more comfortable. I was indeed surprised when I asked one of the flight attendant to help me set up my "bed", she responded that "We don't make beds in Business Class any longer...only First Class" I believe her name was Giselle, but I'm not certain. She did instruct me how to adjust the seat, place the hooded cover and I clearly understood how to place the blanket and the cover. Additionally, the meal I was served (a beef dish) was almost inedible. The beef was tough and odd tasting. I didn't mention it as I was hoping to quickly settle down and try to get some sleep.

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We left over 2 hours late and they didn't even give us a complimentary snack, when getting to the desk I asked if I could be put in a row with only 1 other person or an empt y one I was told the flight was full when the last two rows were empty. All around over it

Air Canada’s problems are not staff related by and large, no. The problem is tiny jets between the U.S. and Canada - yes, believe it or not they are still “international” (just ask our own Mango Maniac in power in the U.S.). The little aisle is compounded by a design flaw of a “dog leg” starting at seat 12. Woe be unto you if you sit here as passengers and attendants do not have sufficient room to not hit you in the face with backpacks. One thing I will say very positively about Air Canada is you still provide pillows and blankets on transcontinental flights to all, not just the elites. Your tiny improperly designed jets are also a problem flying city to city within Canada also. One can only say you remind us of a “Jet Blue” or “Spirit” experience. Also your luggage space is downright Byzantine! We will endeavor to avoid you and use other U.S. carriers, albeit charging more.

Terrible canceled flight and lost my luggage. Flew me to Halifax. Tgat flight was delayed, had to spend night in airport chair.

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

The staff could not have been any friendlier. Lots of usb ports on our aircraft.

It was crazy, boarded over a hour late from scheduled departure. Then when arrived in BNA issued with getting off the plane…over 1/2 hour. Not looking forward to flying Air Canada, ever again.

Great flight. Only complaint is it took over an hour for my luggage to get to the carousel on the return to LAX That was irritating

1 hour late No hot drinks No restroom in the back of the plane

I had wonderful wheelchair assistance through the Montreal airport onto the flight. Air Canada was excellent in this both at the Fredericton airport and the Montreal one where an attendant helped us through customs as well as transport and baggage security.

Everything you need to know for your flight from Montreal to San Diego

Information on your arrival and departure airports