YUL - SJU

$186 Find Cheap Flights from Montreal to San Juan - Compare and Save

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 Juan departing on 9/30. 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 Juan Luis Munoz Marin Intl Airport

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

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Everything you should know

Cheapest round-trip
$289
Typical prices: $304-$576
United Airlines
Mon 9/21Sat 9/26
YUL - SJU • 1 stop
Cheapest non-stop
$375
Air Canada
Sat 11/21Sat 11/28
YUL - SJU • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Air Canada offers Wi-Fi on select flights, with free messaging for Aeroplan members.
Air Transat gives families free seat assignments for children ages 2-13.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $289 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $510 (round-trip)
Shortest trip • 7h 07m (one-way)
Insights
Insights
Insights
Insights
Avoid delays
Most punctual • 91% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 17% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 35% price drop
Most popular
Good to know
Good to know
+1
+1
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We hope you love your trip to San Juan!
Flight Deals
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Expert advice
Flight Deals

Cheap Flights from Montreal to San Juan (YUL-SJU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to San Juan 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 Juan

Mon, Sep 21 - Sat, Sep 26
United Airlines Logo
3:25 pm - 11:50 pm
YUL
-
SJU
8h 25m
1 stop
United Airlines Logo
1:25 pm - 10:06 pm
SJU
-
YUL
8h 41m
1 stop
$289United Airlines
Tue, Sep 8 - Sat, Sep 26
United Airlines Logo
6:10 am - 2:44 pm
YUL
-
SJU
8h 34m
1 stop
United Airlines Logo
1:25 pm - 10:06 pm
SJU
-
YUL
8h 41m
1 stop
$291United Airlines
Wed, Sep 16 - Sun, Sep 20
United Airlines Logo
6:10 am - 2:44 pm
YUL
-
SJU
8h 34m
1 stop
United Airlines Logo
2:55 pm - 10:06 pm
SJU
-
YUL
7h 11m
1 stop
$301United Airlines
Sat, Sep 26 - Sat, Oct 17
United Airlines Logo
6:00 am - 1:45 pm
YUL
-
SJU
7h 45m
1 stop
United Airlines Logo
1:25 pm - 10:06 pm
SJU
-
YUL
8h 41m
1 stop
$306United Airlines
Sun, Sep 6 - Sat, Sep 26
United Airlines Logo
6:10 am - 2:44 pm
YUL
-
SJU
8h 34m
1 stop
United Airlines Logo
1:25 pm - 10:06 pm
SJU
-
YUL
8h 41m
1 stop
$318United Airlines
Tue, Nov 17 - Thu, Nov 26
United Airlines Logo
7:00 am - 2:40 pm
YUL
-
SJU
6h 40m
1 stop
United Airlines Logo
8:30 am - 3:02 pm
SJU
-
YUL
7h 32m
1 stop
$319United Airlines
Wed, Sep 9 - Tue, Sep 29
American Airlines Logo
1:06 pm - 9:24 am
YUL
-
SJU
20h 18m
2 stops
American Airlines Logo
6:27 am - 10:52 pm
SJU
-
YUL
16h 25m
2 stops
$326American Airlines
Sat, Nov 14 - Sat, Nov 21
Multiple Airlines Logo
7:00 am - 2:40 pm
YUL
-
SJU
6h 40m
1 stop
Multiple Airlines Logo
3:00 pm - 6:55 pm
SJU
-
YUL
4h 55mnonstop
$335Multiple Airlines
Wed, Sep 9 - Tue, Sep 29
Arajet Logo
7:00 am - 2:34 pm
YUL
-
SJU
7h 34m
1 stop
Arajet Logo
4:30 pm - 12:20 am
SJU
-
YUL
7h 50m
1 stop
$341Arajet
Fri, Sep 11 - Tue, Sep 29
Arajet Logo
7:00 am - 4:20 pm
YUL
-
SJU
9h 20m
1 stop
Arajet Logo
4:30 pm - 12:20 am
SJU
-
YUL
7h 50m
1 stop
$343Arajet
Booking Insights

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

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

How much is a round-trip flight from Montreal Pierre Elliott Trudeau Intl Airport to San Juan Luis Munoz Marin Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Juan Luis Munoz Marin Intl Airport departing in September.

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

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

If your flying dates are flexible, you should consider flying to San Juan on a Saturday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Montreal to San Juan. For your return ticket, we recommend flying on a Sunday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to San Juan Luis Munoz Marin Intl Airport?

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 Juan Luis Munoz Marin Intl Airport, 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 Juan Luis Munoz Marin Intl Airport is April, where tickets cost $334 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $827 and $659 respectively.

Can I save money by flying with a layover from Montreal Pierre Elliott Trudeau Intl Airport to San Juan Luis Munoz Marin Intl Airport?

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $391 on average.

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Juan Luis Munoz Marin Intl Airport?

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 Juan Luis Munoz Marin Intl Airport, 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 Juan Luis Munoz Marin Intl Airport, you should book around 3 weeks before departure, which saves you about 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Expert advice

Expert advice for your flight from Montreal to San Juan

 
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
John Walton

John Walton

Expert on Air Transat

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.

Stefanie Waldek

Stefanie Waldek

Expert on Air Canada

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

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.

Gabriel Leigh

Gabriel Leigh

Expert on SJU

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Good to know

Low seasonSeptember
Cheapest flight$186
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Montreal to San Juan

When to book flights from Montreal to San Juan

Are your dates flexible? Find out the best times to travel from Montreal to San Juan 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 Juan flights

  • What is the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    In the last 5 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to San Juan Luis Munoz Marin Intl Airport was $180 for a one-way ticket and $289 for a round-trip.

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

    Yes

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

    Only Air Canada offers inflight Wi-Fi service on the Montreal to San Juan flight route.

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

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

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

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

  • Which is the best airline for flights from Montreal to San Juan, Air Transat or United Airlines?

    The two airlines most popular with KAYAK users for flights from Montreal to San Juan are Air Transat and United Airlines. With an average price for the route of $703 and an overall rating of 7.8, Air Transat is the most popular choice. United Airlines is also a great choice for the route, with an average price of $449 and an overall rating of 7.4.

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

    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 Juan.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan 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 Juan?

    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 Juan with an airline and back to Montreal with another airline. Booking your flights between Montreal and SJU 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 Juan?

    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 Juan from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Montreal to San Juan

 
See real verified KAYAK customer reviews for airlines flying from Montreal to San Juan. 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 Juan? 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.
7.8
Air TransatOverall score based on 556 reviews
8.5Crew
7.3Comfort
7.9Boarding
6.8Food
7.1Entertainment
Airline reviews

The dinner was bland and boring, but the economy seats were surprisingly comfortable. The flight was very packed.

6.0 GoodJanice, May 2026
YYZ - OPO
Read more Air Transat reviews

The dinner was bland and boring, but the economy seats were surprisingly comfortable. The flight was very packed.

Arm rests are too small and too close. No screens, movie selection was very limited and poor. Food is pretty much overpriced cheap convenience store food.

I didn't have any problems during my flight. My main issue is with airlines in general, they keep offering less and less every year, AirTransat is no different.

We are a senior couple (70+) and chose emergency exit seats so we would have 2 seats together and neither of us had to sit in a middle seat. My husband is type 1 diabetic on an insulin pump and I monitor his blood sugar levels. I am 5'9" and 250 lbs and found the seats extremely uncomfortable. Toward the end of the flight I developed diarrhea which lasted a full 24 hours.

I was very nice to arrive earlier than scheduled. Very much appreciated. No issues with flight. All was good.

The on-board crew were professional and friendly and made the trip feel like we were taken care of well. The gate for the flight departure changed three times...not great but not terrible. Considering it was the day of the New Jalisco Cartel mayhem, we can't really complain.

We were treated well by the staff at the airport and on board aircraft. Delay was uncontrollable due to the weather. Had to wait for another gate as we were late landing in Fort Lauderdale.

I was supose to have a carrey on incluided for each passenger and they made me paid 75$ each at the gate.

Great crew and entertaining Captain. Seats were not what we had expected based on my booking but things worked out in the end. Of course, like all airlines these days not enough leg or elbow room.

The entertainment system was down; food by purchase only; several people did not receive their luggage. No one answers at the local office or online about the luggage.

Prefer not to have an almost 3 hour delay with useless communication that wasn't accurate.

Boarding was smooth and efficient. The only food was some pretzels, but it was a short flight. Not much to order if you were hungry.

Crew were welcoming, accommodating and they worked hard to find places for all carry on.

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

Starlink is great Crew was polite Business class didn’t get a welcome drink just water and snacks were ok

very average service no complimentary alcoholics drinks unlike other airlines such as Porter airlines No decent seats available during check-in time the day before

Good but airlines getting smaller. I didn't like the meal but the service was fine. Flight was fine and luggage arrived. So good.

They were fast and I like how they used to entertainment system to play video about the safety.

Flight delayed. Connecting to night flight was stressful but made it. Jusr in time. Ran.88Flight was fine.

Hopped on time for the flight only to get deplaned and delayed another 2.5 hours.

Everyone was extremely friendly and nice, from the front desk to the cabin crew!

I like the idea of a non-overnight flight to Europe.

The food was very good. I was nit expecting a meal on a red eye trip. I was pleasantly surprised! Plus we arrived a few minutes earlier than expected!

The crew was excellent. The turbulence was very bad and they were unable to serve our dinner. The captain informed the passengers that we were going to get water and snack instead. They provided us ample snacks instead. Otherwise the trip was good.

Despite travelling ultra basic for the first time due to such increased rates we both managed with one bag each. Even boarding last wasn’t SO bad.

There was no food but a singular cookie for a flight that was over 5hours??? Yeah not fun I was starving and again super cramped plane and you guys need to get planes with screens too, WiFi is nice but common we need more

I loved the fact it was on time and it was a smooth flight to my destination.

I like that we landed safely and that my dog was safe underneath as well. Outside of that, we were 45 mins late for a direct flight that is 1.5 hours long. And 2 of my 3 bags did not make the flight. Only my dog was onboard.

Service was okay except attendant over served alcohol to passenger and passenger got tipsy and made me uncomfortable

Food was not inspired but was satisfying. Same for infotainment selection. You’d think business class would come with complimentary WiFi. Crew was uniformly attentive and excellent.

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

Delayed due to weather in Dallas (arriving flight arrived late), then boarded the plane only to deboard immediately afterwards, tire needed to be replaced. Flight supposed to depart at 6:15pm but departed at 9:35pm.

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

Cleared standby and gave up my seat. Terrible policy and boarding experience

Message about flight cancelation was received late due to being in the air. No explanation, just canceled and booked on morning flight. We had to stay in the airport overnight because there was no transportation offered to get to the hotel that AA had available. Actual inflight was fine.

Typical AA - late by 90+ mn. Gate changed twice... Changed the departure time 6 times No explanation, no communication on reasons for delay I travel with AA twice a year... and it is consistently very poor.. I will continue to use AA only when i have to.

Mechanical issue delayed us 2hrs and then once we landed sat on tarmac for 30mins because someone left a vehicle in front of the gaye

Meals were not so good. Snack between the meals was very bad. Like Japan Airlines, they could eliminate the snack and make the second meal much better.

Baggage allowances are terrible and the experience of only being allowed one bag and paying so much to take sporting equipment to a known ski area should be addressed.

Flight was on time is the only good thing. Person loading the plane called 1-6 to board at the same time, made it chaotic. Plane was too small for even putting backpacks in overhead. Seat for normal sized people were too small. The WIFI didn't work. When we landed had to wait because not enough ground crew.

Multiple delays and gate changes resulting in arrival with a 5 hour delay.

Didnt make it on flight. Flight was delayed. Then had to get rebooked for a flight that was 8 hours later. Guess who had to wait for 8 hours at the airport?

The flight was smooth, the plane was spacious and clean, the staff was kind and the food was decent.

Pretzels were a bit dry and dusty, however it is nice to have a choice between sweet and savory snacks.

The TV screen at my seat was not functioning for the entire duration of the flight. I informed a flight attendant about the issue, and I was told that I would receive a voucher as compensation. However, I never received this voucher afterward. I therefore kindly request to still receive the voucher that was promised to me.

Flight crew was great, and even the crew for checking bags! I had a question for a friend of mine flying tomorrow and the man I talked to was awesome and answered my questions and looked up things for me when he didn’t have to! I was able to give her current & accurate info for her flight and she was so appreciative too!!

As mentioned before the fact that my paid-for aisle seats had been changed to non-aisle seats is unacceptable. Happily one staff member at the boarding counter did correct it before the flights, otherwise I would have been forced to submit a formal complaint. If it happens again on return flights, I will put in a formal complaint.

Another good flight experience with Air Canada. The business section did not feature the full length sleeping arrangement, but this was a shorter trip. The food was excellent. But the flight crew was truly top tier: friendly, cheerful, helpful at all the right times. Air Canada truly outshines all U.S. carriers.

Everything could be better, the worst is the crew, looks like they are not happy in the work. Air Canada is downhill for years, every flight looks worst. Hope they can fix the issues, by now, just flying AC in toutes with no other alternatives. Shame.

This was my second leg of my trip and was delayed so was worried about my connection in Montreal. Still hungry so on boarding I asked a flight attendant if I could use my $14.00 voucher on the plane for food as I was starving. She said she would check and let me know but she never came back. So no food again as none was offered. Had to get my bags and check them again and that was ok but don’t understand why I had to go through security and because of them almost missed my flight. No food offered nor possibility to purchase food so still hungry and just watched a movie and hoped I could get food when I landed. Was able to use the $14.00 voucher to buy something and had my family bring food as I was now starving. I’ve been travelling on AC for years and this was my worst experience ever. After our flight got cancelled in SXM and was told the staff there didn’t work for AC so couldn’t do much to help us was not a good experience

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

Information on your arrival and departure airports