Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Montreal to San Juan from C$ 245

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SJU
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 6 November 2025.

Mon 24/113:00 p.m.YUL - SJU
1 stop8h 36mUnited Airlines
Thu 4/128:30 a.m.SJU - YUL
1 stop7h 46mUnited Airlines
Deal found 4/11C$ 481
Mon 24/116:45 a.m.YUL - SJU
2 stops15h 59mMultiple Airlines
Sun 7/124:06 p.m.SJU - YUL
1 stop9h 09mMultiple Airlines
Deal found 4/11C$ 482
Fri 5/126:45 a.m.YUL - SJU
2 stops19h 05mMultiple Airlines
Sun 14/124:06 p.m.SJU - YUL
1 stop9h 09mMultiple Airlines
Deal found 5/11C$ 488
Fri 5/122:29 p.m.YUL - SJU
2 stops18h 40mAmerican Airlines
Tue 9/126:25 a.m.SJU - YUL
1 stop6h 55mAmerican Airlines
Deal found 5/11C$ 492
Wed 12/117:30 a.m.YUL - SJU
1 stop15h 22mAmerican Airlines
Thu 13/116:25 a.m.SJU - YUL
1 stop17h 34mAmerican Airlines
Deal found 4/11C$ 495
Thu 27/117:14 a.m.YUL - SJU
2 stops25h 56mAmerican Airlines
Fri 5/124:50 p.m.SJU - YUL
1 stop7h 09mAmerican Airlines
Deal found 6/11C$ 498
Sun 16/117:14 a.m.YUL - SJU
1 stop7h 40mAmerican Airlines
Tue 9/126:25 a.m.SJU - YUL
1 stop6h 55mAmerican Airlines
Deal found 6/11C$ 501
Mon 24/117:30 a.m.YUL - SJU
1 stop7h 49mAmerican Airlines
Thu 4/126:25 a.m.SJU - YUL
1 stop9h 59mAmerican Airlines
Deal found 4/11C$ 502
Mon 24/117:30 a.m.YUL - SJU
1 stop7h 49mAmerican Airlines
Tue 2/126:25 a.m.SJU - YUL
1 stop6h 50mAmerican Airlines
Deal found 4/11C$ 504
Thu 4/125:25 p.m.YUL - SJU
2 stops18h 07mMultiple Airlines
Sun 14/124:06 p.m.SJU - YUL
1 stop9h 09mMultiple Airlines
Deal found 5/11C$ 505

Cheap 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 6 November 2025.

Round-trip from

C$ 480

One-way from

C$ 245

Popular in

December

Cheapest in

October

Average price

C$ 695
United Airlines
  • United Airlines
  • 24/2-5/3
  • 2 total stops
  • 15h 22m total
  • Montreal to San Juan
Search Deals
United Airlines
  • United Airlines
  • 21/1
  • 1 total stop
  • 12h 07m total
  • Montreal to San Juan
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 6 November 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

Sat 6/12

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 10/12

8:30 a.m.-3:16 p.m.

1 stop7h 46m

C$ 518

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

3:11 p.m.-12:36 a.m.

1 stop8h 25m

San Juan Luis Munoz Marin Intl

Thu 5/3

8:10 a.m.-3:23 p.m.

1 stop8h 13m

C$ 563

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 25/11

6:00 a.m.-9:00 p.m.

1 stop14h 00m

San Juan Luis Munoz Marin Intl

Thu 4/12

8:30 a.m.-3:16 p.m.

1 stop7h 46m

C$ 707

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sat 24/1

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Sat 7/2

2:05 a.m.-8:32 a.m.

1 stop7h 27m

C$ 707

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Mon 9/2

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Sun 15/2

2:05 a.m.-8:32 a.m.

1 stop7h 27m

C$ 710

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Mon 15/12

9:15 a.m.-10:22 p.m.

1 stop12h 07m

San Juan Luis Munoz Marin Intl

Thu 18/12

8:30 a.m.-7:48 p.m.

1 stop12h 18m

C$ 712

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

Fri 30/1

2:05 a.m.-8:32 a.m.

1 stop7h 27m

C$ 717

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 11/3

2:13 p.m.-9:22 p.m.

1 stop7h 09m

San Juan Luis Munoz Marin Intl

Tue 24/3

1:05 a.m.-8:32 a.m.

1 stop7h 27m

C$ 745

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 24/3

7:00 a.m.-1:40 p.m.

1 stop6h 40m

San Juan Luis Munoz Marin Intl

Tue 24/3

1:05 a.m.-8:32 a.m.

1 stop7h 27m

C$ 784

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Thu 26/2

6:00 a.m.-9:00 p.m.

1 stop14h 00m

San Juan Luis Munoz Marin Intl

Wed 11/3

7:10 a.m.-3:23 p.m.

1 stop8h 13m

C$ 791

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/11

Showing 1-10 of 16 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 31 October 2025.

To ensure you get the cheapest price possible for a flight from Montreal to San Juan, you should look to book at least 64 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$ 250). Flying from Montreal to San Juan in July is currently the most expensive (average of C$ 666). 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 6 November 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 39% on airfare.

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

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 6 November 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
470 reviews
Check prices

Food

6.8

Crew

8.5

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

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
470 reviews
Air Transat
7.8
Good
470 reviews
Check prices

Food

6.8

Crew

8.5

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

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
9,003 reviews
Air Transat
7.8
Good
470 reviews
Check prices

Food

6.8

Crew

8.5

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

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
11,040 reviews
Air Transat
7.8
Good
470 reviews
Check prices

Food

6.8

Crew

8.5

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

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
3,154 reviews
Air Transat
7.8
Good
470 reviews
Check prices

Food

6.8

Crew

8.5

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

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
10,410 reviews
Air Transat
7.8
Good
470 reviews
Check prices

Food

6.8

Crew

8.5

Comfort

7.4

Entertainment

7.1

Overall

7.8

Boarding

7.9

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 8h 36m. 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$ 378, American Airlines will fly you from Montreal to San Juan and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Air Canada - these airlines can fly you to your destination from C$ 395 and C$ 403, respectively. American Airlines is 50% cheaper than the average price of flights available within the next 90 days to this destination.

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

    While on average a flight from Montreal to San Juan is generally C$ 588, our data shows the cheapest flight currently is C$ 296. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Juan Luis Munoz Marin Intl), you can expect to pay C$ 334 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$ 250). Flying from Montreal to San Juan in July is currently the most expensive (average of C$ 666). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 6 November 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 378AverageC$ 620FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 395AverageC$ 624FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 403AverageC$ 668FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air TransatCheapestC$ 484AverageC$ 852FlexibilityNo cancel feeOn-time50%
Search Air Transat flights
DeltaCheapestC$ 515AverageC$ 525FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 660AverageC$ 807FlexibilityNo 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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.