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Cheap flights from Montreal to San Juan from C$ 280

YMQ — SJU
20 Oct — 27 Oct1
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 Tuesday or Monday and return on a Tuesday

Cheap flight deals from Montreal to San Juan

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to San Juan

Sun 25/106:45 a.m. -
2 stops30h 46m
Sun 1/114:00 p.m. -
1 stop9h 15m
Deal found 16/9C$ 450
Mon 19/106:00 a.m. -
1 stop7h 45m
Wed 28/107:05 a.m. -
1 stop8h 11m
Deal found 18/9C$ 459
Sat 24/1010:30 p.m. -
1 stop14h 25m
Sun 1/112:25 p.m. -
1 stop18h 25m
Deal found 20/9C$ 473
Sun 8/117:33 a.m. -
2 stops14h 06m
Sat 14/117:05 a.m. -
1 stop7h 39m
Deal found 16/9C$ 480
Sat 24/109:10 a.m. -
2 stops14h 40m
Sun 1/114:00 p.m. -
1 stop9h 15m
Deal found 20/9C$ 481
Sat 24/1010:30 p.m. -
1 stop14h 25m
Sat 31/102:20 p.m. -
1 stop19h 05m
Deal found 17/9C$ 485
Wed 4/117:00 a.m. -
1 stop6h 58m
Sun 15/114:00 p.m. -
1 stop9h 15m
Deal found 16/9C$ 488
Sat 3/103:25 p.m. -
1 stop8h 25m
Wed 14/101:25 p.m. -
1 stop8h 41m
Deal found 15/9C$ 496

Find flight deals from Montreal to San Juan

Round-trip from

C$ 450

One-way from

C$ 280

Popular in

December

Cheapest in

September

Average price

C$ 400
Arajet
  • Arajet
  • 25/10-1/11
  • 3 total stops
  • 40h 01m total
  • Montreal to San Juan
Search Deals
United Airlines
  • United Airlines
  • 19/10-31/12
  • 1 total stop
  • 7h 45m total
  • Montreal to San Juan
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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 Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sat 5/12

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 280
Quickest round-trip

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Mon 19/10

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

1 stop7h 45m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 280

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 21/10

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

1 stop8h 25m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 281

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sat 30/1

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 285

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Fri 2/10

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

1 stop8h 25m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 315

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 3/11

6:45 a.m.-3:19 p.m.

2 stops31h 34m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 355

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sat 30/1

8:10 a.m.-12:36 a.m.

2 stops15h 26m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 373

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Fri 16/10

7:00 a.m.-4:20 p.m.

1 stop9h 20m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 414

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 6/1

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 417

MontrealSan Juan

YUL Montreal Pierre Elliott Trudeau Intl - SJU San Juan Luis Munoz Marin Intl

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 20/10

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

1 stop8h 25m

San Juan Luis Munoz Marin Intl

Fri 23/10

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

1 stop8h 41m

C$ 459

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/9

Showing 1-10 of 21 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

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$ 522). Flying from Montreal to San Juan in December is currently the most expensive (average of C$ 1,053). 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 typical for this route at the moment.
Montreal to San Juan flights typically cost between C$ 355 and C$ 585 in October.
The cheapest round-trip price found within the last 5 days was C$ 450 on Multiple Airlines (25 Oct-1 Nov).

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

Check out reviews from past customers who have flown with United Airlines,WestJet, andAir Canada 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
10,227 reviews
Check prices

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Comfort

7.3

Boarding

7.7

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
10,227 reviews
United Airlines
7.4
Good
10,227 reviews
Check prices

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Comfort

7.3

Boarding

7.7

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
3,447 reviews
United Airlines
7.4
Good
10,227 reviews
Check prices

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Comfort

7.3

Boarding

7.7

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
11,655 reviews
United Airlines
7.4
Good
10,227 reviews
Check prices

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Comfort

7.3

Boarding

7.7

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
7.0
Good
12,077 reviews
United Airlines
7.4
Good
10,227 reviews
Check prices

Overall

7.4

Entertainment

7.1

Crew

8.1

Food

6.7

Comfort

7.3

Boarding

7.7

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

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

    There are many flights that can get you from Montreal to San Juan in 8h 25m. 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$ 265, Air Canada will fly you from Montreal to San Juan and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Arajet and United Airlines - these airlines can fly you to your destination from C$ 289 and C$ 368, respectively. Air Canada is 62% 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 Arajet (C$ 182), American Airlines (C$ 234), and United Airlines (C$ 243).

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

    While on average a flight from Montreal to San Juan is generally C$ 906, our data shows the cheapest flight currently is C$ 606. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Juan Luis Munoz Marin Intl), you can expect to pay C$ 459 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$ 522). Flying from Montreal to San Juan in December is currently the most expensive (average of C$ 1,053). 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

Top 6 airlines flying from Montreal to San Juan

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 265AverageC$ 603FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
ArajetCheapestC$ 289AverageC$ 407FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
United AirlinesCheapestC$ 368AverageC$ 564FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 402AverageC$ 568FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air TransatCheapestC$ 620AverageC$ 952FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJetCheapestC$ 801AverageC$ 929FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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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.

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