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Cheap flights from Montreal to San Juan from C$ 216

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 18/1. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SJU
3 Jan — 10 Jan1
1 adult
1 adult, Economy, 0 bags

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 4 December 2025.

Fri 5/1212:59 p.m.YUL - SJU
1 stop9h 53mAmerican Airlines
Tue 9/126:25 a.m.SJU - YUL
1 stop6h 55mAmerican Airlines
Deal found 3/12C$ 519
Wed 10/1212:59 p.m.YUL - SJU
1 stop9h 53mAmerican Airlines
Sat 20/127:00 a.m.SJU - YUL
1 stop16h 58mAmerican Airlines
Deal found 4/12C$ 521
Thu 11/126:00 p.m.YUL - SJU
1 stop21h 36mAir Canada
Sun 21/122:45 p.m.SJU - YUL
Nonstop4h 45mAir Canada
Deal found 3/12C$ 576
Mon 15/127:30 a.m.YUL - SJU
1 stop15h 22mAmerican Airlines
Mon 22/127:00 a.m.SJU - YUL
1 stop16h 58mAmerican Airlines
Deal found 2/12C$ 622
Wed 3/127:00 a.m.YUL - SJU
2 stops13h 00mAir Canada
Fri 12/122:10 p.m.SJU - YUL
2 stops11h 22mAir Canada
Deal found 3/12C$ 636
Thu 11/125:10 p.m.YUL - SJU
2 stops30h 35mMultiple Airlines
Sun 21/124:06 p.m.SJU - YUL
1 stop9h 09mMultiple Airlines
Deal found 3/12C$ 667
Sat 13/127:00 a.m.YUL - SJU
1 stop15h 20mWestJet
Sun 21/123:00 p.m.SJU - YUL
1 stop10h 43mWestJet
Deal found 4/12C$ 708

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 4 December 2025.

Round-trip from

C$ 469

One-way from

C$ 216

Popular in

December

Cheapest in

October

Average price

C$ 1,121
Arajet
  • Arajet
  • 10/1-18/1
  • 3 total stops
  • 19h 22m total
  • Montreal to San Juan
Search Deals
18/1
  • 18/1
  • 1 total stop
  • 16h 20m total
  • Montreal to San Juan
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 51 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 4 December 2025.
Use the filters below to find and compare flights from Montreal to San Juan that are best for you.

Fly from

Montreal

Fly to

San Juan

Route

Depart

Return

Price

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 21/1

2:13 p.m.-10:22 p.m.

1 stop7h 09m

San Juan Luis Munoz Marin Intl

Wed 28/1

2:15 p.m.-9:42 p.m.

1 stop8h 27m

C$ 469

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 24/2

2:13 p.m.-10:22 p.m.

1 stop7h 09m

San Juan Luis Munoz Marin Intl

Thu 5/3

8:10 a.m.-3:16 p.m.

1 stop8h 06m

C$ 473

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sun 11/1

8:00 a.m.-3:35 p.m.

1 stop30h 35m

San Juan Luis Munoz Marin Intl

Sun 18/1

4:06 p.m.-12:15 a.m.

1 stop9h 09m

C$ 474

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

4:00 p.m.-3:13 a.m.

2 stops10h 13m

San Juan Luis Munoz Marin Intl

Sun 18/1

4:06 p.m.-12:15 a.m.

1 stop9h 09m

C$ 476

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Fri 23/1

7:30 a.m.-11:56 p.m.

1 stop15h 26m

San Juan Luis Munoz Marin Intl

Fri 30/1

3:49 p.m.-10:44 p.m.

1 stop7h 55m

C$ 509

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Fri 23/1

3:59 p.m.-11:56 p.m.

1 stop6h 57m

San Juan Luis Munoz Marin Intl

Sat 31/1

7:00 a.m.-3:20 p.m.

1 stop9h 20m

C$ 511

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Fri 27/2

8:10 a.m.-3:16 p.m.

1 stop8h 06m

C$ 539

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sun 15/3

3:11 p.m.-11:36 p.m.

1 stop8h 25m

San Juan Luis Munoz Marin Intl

Tue 31/3

7:20 a.m.-3:00 p.m.

1 stop7h 40m

C$ 540

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 4/3

8:10 a.m.-3:16 p.m.

1 stop8h 06m

C$ 540

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 9/12

6:00 a.m.-3:40 p.m.

1 stop8h 40m

C$ 244

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Showing 1-10 of 20 results
1
2

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

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

Use this chart to determine the optimal time to book a round-trip flight from Montreal to San Juan. Price data was last updated on 28 November 2025.

To ensure you get the cheapest price possible for a flight from Montreal to San Juan, you should look to book at least 57 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.

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

Currently, October is the cheapest month in which you can book a flight from Montreal to San Juan (average of C$ 247). Flying from Montreal to San Juan in June is currently the most expensive (average of C$ 682). 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.

What is the cheapest time of day to fly from YMQ to SJU?

Find hourly flight availability from Montreal to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 December 2025.

One of the essential ways to save on airfare from Montreal to San Juan is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 38% on airfare.

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

How often are flights from Montreal to San Juan delayed?

About 22% of weekly flights between Montreal and San Juan have experienced delays in the past year, with the average delay time being 96 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 Transat has had the lowest number of delays on this route, with just 6% of flights being delayed.

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 4 December 2025.
Check out reviews from past customers who have flown with Air Transat,United Airlines, 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.
Air Transat
7.8
Good
480 reviews
Check prices

Crew

8.4

Food

6.8

Comfort

7.3

Overall

7.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air Transat
7.8
Good
480 reviews
Air Transat
7.8
Good
480 reviews
Check prices

Crew

8.4

Food

6.8

Comfort

7.3

Overall

7.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
United Airlines
7.4
Good
9,066 reviews
Air Transat
7.8
Good
480 reviews
Check prices

Crew

8.4

Food

6.8

Comfort

7.3

Overall

7.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
American Airlines
7.2
Good
11,045 reviews
Air Transat
7.8
Good
480 reviews
Check prices

Crew

8.4

Food

6.8

Comfort

7.3

Overall

7.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
WestJet
7.2
Good
3,192 reviews
Air Transat
7.8
Good
480 reviews
Check prices

Crew

8.4

Food

6.8

Comfort

7.3

Overall

7.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.
Air Canada
7.1
Good
10,500 reviews
Air Transat
7.8
Good
480 reviews
Check prices

Crew

8.4

Food

6.8

Comfort

7.3

Overall

7.8

Boarding

7.9

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

YYZ - YUL

Easy, fast onboarding, very friendly staff. Seats were very narrow, OK for me but we were elbow to elbow with both neighbours of small size. The seat width should be indicated at the time of booking to prevent an uncomfortable situation with oversized travellers.

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 09m. 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$ 222, 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 American Airlines and Air Canada - these airlines can fly you to your destination from C$ 295 and C$ 374, respectively. Arajet is 69% 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 United Airlines (C$ 225), Air Transat (C$ 227), and American Airlines (C$ 228).

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

    While on average a flight from Montreal to San Juan is generally C$ 860, our data shows the cheapest flight currently is C$ 556. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Juan Luis Munoz Marin Intl), you can expect to pay C$ 388 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, October is the cheapest month in which you can book a flight from Montreal to San Juan (average of C$ 247). Flying from Montreal to San Juan in June is currently the most expensive (average of C$ 682). 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 4 December 2025.
AirlineCheapestAverageFlexibilityOn-time
ArajetCheapestC$ 292AverageC$ 330FlexibilityNo cancel feeOn-timeN/A
Search Arajet flights
Air CanadaCheapestC$ 380AverageC$ 645FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 390AverageC$ 611FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 392AverageC$ 615FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air TransatCheapestC$ 478AverageC$ 872FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
WestJetCheapestC$ 653AverageC$ 798FlexibilityNo 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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