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Cheap flights from Montreal to San Juan from C$ 186

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SJU
23 Aug — 30 Aug1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to San Juan are usually found in September or October, booked 70 days in advance, depart on a Thursday or Tuesday and return on a Monday

Cheap flight deals from Montreal to San Juan

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to San Juan
Explore the most affordable flight options available from Montreal to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 July 2026.

Tue 1/93:25 p.m.
YUL
-
SJU
1 stop8h 25m
United Airlines
Tue 22/91:25 p.m.
SJU
-
YUL
1 stop8h 41m
United Airlines
Deal found 23/7C$ 408
Wed 30/93:25 p.m.
YUL
-
SJU
1 stop8h 25m
United Airlines
Mon 26/101:35 p.m.
SJU
-
YUL
1 stop8h 07m
United Airlines
Deal found 21/7C$ 410
Sat 12/96:00 a.m.
YUL
-
SJU
1 stop7h 45m
United Airlines
Mon 5/101:25 p.m.
SJU
-
YUL
1 stop8h 41m
United Airlines
Deal found 20/7C$ 411
Sat 7/113:00 p.m.
YUL
-
SJU
1 stop8h 36m
United Airlines
Sat 14/118:05 a.m.
SJU
-
YUL
1 stop8h 11m
United Airlines
Deal found 23/7C$ 422
Tue 10/113:00 p.m.
YUL
-
SJU
1 stop8h 36m
United Airlines
Tue 24/118:05 a.m.
SJU
-
YUL
1 stop8h 11m
United Airlines
Deal found 22/7C$ 446
Sat 5/128:50 a.m.
YUL
-
SJU
Nonstop4h 50m
Air Canada
Fri 25/122:25 p.m.
SJU
-
YUL
1 stop8h 35m
Air Canada
Deal found 21/7C$ 456
Sat 28/118:00 p.m.
YUL
-
SJU
1 stop16h 30m
Air Canada
Sat 5/123:35 p.m.
SJU
-
YUL
Nonstop4h 55m
Air Canada
Deal found 19/7C$ 462
Sat 5/96:00 a.m.
YUL
-
SJU
1 stop17h 50m
Multiple Airlines
Sun 13/94:00 p.m.
SJU
-
YUL
1 stop8h 20m
Multiple Airlines
Deal found 21/7C$ 474
Tue 1/123:00 p.m.
YUL
-
SJU
1 stop8h 36m
United Airlines
Tue 15/128:30 a.m.
SJU
-
YUL
1 stop7h 32m
United Airlines
Deal found 21/7C$ 487

Find flight deals from Montreal to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to San Juan (PR1). 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 24 July 2026.

Round-trip from

C$ 408

One-way from

C$ 186

Popular in

August

Cheapest in

September

Average price

C$ 888
United Airlines
  • United Airlines
  • 1/9-22/9
  • 2 total stops
  • 17h 06m total
  • Montreal to San Juan
Search Deals
Arajet
  • Arajet
  • 16/9
  • 1 total stop
  • 7h 34m total
  • Montreal to San Juan
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Montreal to San Juan 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 629,999 searches. Data last updated 24 July 2026.
Use the filters below to find and compare flights from Montreal to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

6:00 a.m.-1:45 p.m.

1 stop7h 45m

San Juan Luis Munoz Marin Intl

Mon 26/10

1:35 p.m.-9:42 p.m.

1 stop8h 07m

C$ 408

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 12/1

3:00 p.m.-12:36 a.m.

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Thu 21/1

8:10 a.m.-3:02 p.m.

1 stop7h 52m

C$ 411

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sat 7/11

3:00 p.m.-12:36 a.m.

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Sat 14/11

8:05 a.m.-3:16 p.m.

1 stop8h 11m

C$ 422

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sat 5/9

6:00 a.m.-1:45 p.m.

1 stop7h 45m

San Juan Luis Munoz Marin Intl

Fri 11/9

1:25 p.m.-10:06 p.m.

1 stop8h 41m

C$ 488
Quickest round-trip

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

6:00 a.m.-1:53 p.m.

1 stop7h 53m

San Juan Luis Munoz Marin Intl

Mon 21/9

2:55 p.m.-10:06 p.m.

1 stop7h 11m

C$ 501

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

3:25 p.m.-11:50 p.m.

1 stop8h 25m

San Juan Luis Munoz Marin Intl

Wed 9/9

1:25 p.m.-10:06 p.m.

1 stop8h 41m

C$ 501

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sun 17/1

3:00 p.m.-12:36 a.m.

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 10/2

8:10 a.m.-3:02 p.m.

1 stop7h 52m

C$ 521

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Mon 9/11

3:00 p.m.-12:36 a.m.

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Tue 24/11

8:05 a.m.-3:16 p.m.

1 stop8h 11m

C$ 525

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 12/1

3:00 p.m.-12:36 a.m.

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 20/1

8:10 a.m.-3:02 p.m.

1 stop7h 52m

C$ 555

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 1/12

3:00 p.m.-12:36 a.m.

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Fri 25/12

1:00 p.m.-9:40 p.m.

1 stop9h 40m

C$ 566

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/7

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Montreal to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Montreal 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 to San Juan

What is the cheapest month to book a flight from Montreal to San Juan?

Currently, September is the cheapest month in which you can book a flight from Montreal to San Juan (average of C$ 424). Flying from Montreal to San Juan in December is currently the most expensive (average of C$ 1,073). 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.

How much does it cost to fly round-trip from Montreal to San Juan?

Airfare is below average for this route at the moment.
Montreal to San Juan flights typically cost between C$ 761 and C$ 1,038 in September.
The cheapest round-trip price found within the last 5 days was C$ 408 on United Airlines (1 Sep-22 Sep).

How often are flights from Montreal to San Juan delayed?

About 6% of weekly flights between Montreal and San Juan have experienced delays in the past year, with the average delay time being 148 minutes.

What is the most punctual flight time for Montreal to San Juan flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Montreal to San Juan flights?

Over the past year, Air Canada Rouge has had the lowest number of delays on this route, with just 9% of flights being delayed.

How far ahead should I book a flight from Montreal to San Juan?

To ensure you get the cheapest price possible for a flight from Montreal to San Juan, you should look to book at least 69 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. 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 Juan. Reviews last updated 24 July 2026.
Check out reviews from past customers who have flown with United Airlines,WestJet, andAmerican Airlines from Montreal to San Juan to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,026 reviews
Check prices

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
10,026 reviews
United Airlines
7.4
Good
10,026 reviews
Check prices

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
WestJet
7.2
Good
3,416 reviews
United Airlines
7.4
Good
10,026 reviews
Check prices

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
American Airlines
7.1
Good
11,842 reviews
United Airlines
7.4
Good
10,026 reviews
Check prices

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Air Canada
7.1
Good
11,378 reviews
United Airlines
7.4
Good
10,026 reviews
Check prices

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Montreal to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montreal to San Juan?

    There are many flights that can get you from Montreal to San Juan in 7h 45m. Fly via United Airlines to get the fastest option. Montreal and San Juan are separated by a distance of 3087 km.

  • What are the cheapest airlines flying from Montreal to San Juan round-trip?

    Currently priced at C$ 290, Arajet will fly you from Montreal to San Juan and back. In addition to Arajet, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Air Canada and United Airlines - these airlines can fly you to your destination from C$ 331 and C$ 339, respectively. Arajet is 59% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Montreal to San Juan one-way?

    The cheapest airlines for a one-way flight from Montreal to San Juan are American Airlines (C$ 236), United Airlines (C$ 245), and Air Canada (C$ 266).

  • What are the cheapest flights from Montreal to San Juan?

    While on average a flight from Montreal to San Juan is generally C$ 479, our data shows the cheapest flight currently is C$ 442. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Juan Luis Munoz Marin Intl), you can expect to pay C$ 386 for that flight.

  • Can I find deals for flights from Montreal to San Juan that include hotel bookings?

    Yes. In addition to deals on Montreal to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montreal to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to San Juan.

  • Can I find deals for business class flights from Montreal to San Juan?

    Yes. Cheapflights offers flight deals from Montreal to San Juan 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 to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Montreal to San Juan (average of C$ 424). Flying from Montreal to San Juan in December is currently the most expensive (average of C$ 1,073). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Montreal to San Juan

Discover the top 6 airlines that operate flights from Montreal to San Juan. 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 629,999 searches. Data last updated 24 July 2026.
AirlineCheapestAverageFlexibilityOn-time
ArajetCheapestC$ 290AverageC$ 382FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
Air CanadaCheapestC$ 331AverageC$ 596FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 339AverageC$ 554FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 395AverageC$ 637FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air TransatCheapestC$ 544AverageC$ 904FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJetCheapestC$ 788AverageC$ 943FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Montreal to San Juan?

Deals for Montreal to San Juan flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Montreal to San Juan?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Montreal to San Juan.

Can Cheapflights find flights from Montreal to San Juan with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Montreal to San Juan, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Montreal to San Juan become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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