How long is the flight from Montreal to San Juan?

There are many flights that can get you from Montreal to San Juan in 6h 40m. 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$ 366, 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$ 388 and C$ 400, respectively. American Airlines is 50% cheaper than the average price of flights available within the next 90 days to this destination.

What is the cheapest day to fly from Montreal to San Juan?

Travelers seeking maximum savings on their Montreal to San Juan flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in San Juan ranges from 55.0 - 156.0 mm per month. November is typically the wettest month, when rainfall can reach 156.0 mm. March is typically the driest time to visit San Juan when rainfall is around 55.0 mm.

If weather is an important factor for your trip to San Juan, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 25.0 C).

What are the cheapest flights from Montreal to San Juan?

While on average a flight from Montreal to San Juan is generally C$ 991, our data shows the cheapest flight currently is C$ 634. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Juan Luis Munoz Marin Intl), you can expect to pay C$ 372 for that flight.

What are the most popular airlines that fly from Montreal to San Juan?

Before booking your flight from Montreal to San Juan check out the most popular airlines for this route: American Airlines, Air Canada or Delta.

What is the cheapest day to fly round-trip from Montreal to San Juan?

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 207% when planning your travel around this day of the week.

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

Find a great deal and save up to 1% by booking at least 17 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Montreal to San Juan within the next two weeks, with the cheapest ticket starting at C$ 390.

What is the cheapest month to fly from Montreal to San Juan?

October is one of the best times of the year to fly to San Juan from Montreal. Prices for October average C$ 736 per person but you can even find prices for as low as C$ 385. The most expensive prices can be found in the month of December. Opting for a October flight can save you 55% on your journey compared to booking in December

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.

C$ 218+ Flights from Montreal to San Juan

Q: 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$ 565 and C$ 746 in October. The cheapest round-trip price found within the last 3 days was C$ 390 on American Airlines (21 Oct-28 Oct).

Cheap flight deals from Montreal to San Juan

Round-trip from	C$ 390
One-way from	C$ 218
Popular in	December
Cheapest in	October
Average price	C$ 699

American Airlines
21/10-28/10
2 total stops
25h 51m total
Montreal to San Juan

Search Deals

United Airlines
15/11
1 total stop
8h 36m total
Montreal to San Juan

Search Deals

Highest demand for flights based on searches. 8% potential increase in price (C$ 95 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (C$ 52 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Montreal to San Juan

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 15 September 2025.

Tue 21/107:29 a.m.YUL - SJU

1 stop8h 26mAmerican Airlines

Tue 28/105:30 a.m.SJU - YUL

1 stop17h 25mAmerican Airlines

Deal found 14/9C$ 390

Wed 15/107:29 a.m.YUL - SJU

1 stop14h 41mAmerican Airlines

Wed 22/105:30 a.m.SJU - YUL

1 stop9h 50mAmerican Airlines

Deal found 15/9C$ 414

Tue 16/96:15 a.m.YUL - SJU

1 stop8h 29mUnited Airlines

Sat 27/91:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 437

Wed 17/93:41 p.m.YUL - SJU

1 stop8h 16mUnited Airlines

Fri 3/101:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 471

Sun 26/107:50 a.m.YUL - SJU

1 stop16h 09mAmerican Airlines

Thu 30/105:30 a.m.SJU - YUL

1 stop9h 54mAmerican Airlines

Deal found 14/9C$ 474

Thu 18/92:31 p.m.YUL - SJU

2 stops20h 40mAmerican Airlines

Tue 30/95:25 p.m.SJU - YUL

2 stops22h 08mAmerican Airlines

Deal found 15/9C$ 485

Sat 20/93:41 p.m.YUL - SJU

1 stop8h 16mUnited Airlines

Sat 27/91:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 486

Sat 18/1010:45 a.m.YUL - SJU

2 stops15h 17mMultiple Airlines

Fri 24/104:51 p.m.SJU - YUL

1 stop25h 04mMultiple Airlines

Deal found 14/9C$ 493

Sat 18/107:50 a.m.YUL - SJU

1 stop15h 15mAmerican Airlines

Sat 25/105:25 a.m.SJU - YUL

1 stop9h 55mAmerican Airlines

Deal found 14/9C$ 499

Tue 21/106:15 a.m.YUL - SJU

1 stop8h 29mMultiple Airlines

Mon 27/101:05 a.m.SJU - YUL

1 stop10h 52mMultiple Airlines

Deal found 14/9C$ 513

Best flights from Montreal to San Juan
Discover carefully curated flight deals from Montreal to San Juan that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 15 September 2025.

Sun 9/117:00 a.m.YUL - SJU

1 stop6h 40mUnited Airlines

Tue 18/118:30 a.m.SJU - YUL

1 stop7h 46mUnited Airlines

Deal found 12/9C$ 413

Wed 25/210:05 a.m.YUL - SJU

2 stops12h 15mAmerican Airlines

Thu 5/36:40 a.m.SJU - YUL

1 stop9h 40mAmerican Airlines

Deal found 15/9C$ 565

Tue 21/108:00 a.m.YUL - SJU

2 stops15h 57mAir Canada

Mon 27/101:05 a.m.SJU - YUL

2 stops13h 17mAir Canada

Deal found 15/9C$ 637

Sat 15/113:00 p.m.YUL - SJU

1 stop8h 36mMultiple Airlines

Sat 22/113:40 p.m.SJU - YUL

1 stop17h 42mMultiple Airlines

Deal found 13/9C$ 648

Thu 15/19:15 a.m.YUL - SJU

1 stop12h 07mUnited Airlines

Thu 22/18:10 a.m.SJU - YUL

1 stop8h 06mUnited Airlines

Deal found 14/9C$ 471

Thu 15/19:15 a.m.YUL - SJU

1 stop12h 07mUnited Airlines

Tue 27/18:35 a.m.SJU - YUL

1 stop13h 42mUnited Airlines

Deal found 14/9C$ 511

Wed 3/123:00 p.m.YUL - SJU

1 stop8h 36mUnited Airlines

Fri 12/128:30 a.m.SJU - YUL

1 stop7h 46mUnited Airlines

Deal found 14/9C$ 515

Thu 11/123:00 p.m.YUL - SJU

1 stop8h 36mUnited Airlines

Wed 17/128:30 a.m.SJU - YUL

1 stop7h 46mUnited Airlines

Deal found 15/9C$ 521

Fri 20/22:13 p.m.YUL - SJU

1 stop7h 09mUnited Airlines

Sat 28/28:10 a.m.SJU - YUL

1 stop7h 52mUnited Airlines

Deal found 14/9C$ 557

Wed 12/113:00 p.m.YUL - SJU

1 stop8h 36mUnited Airlines

Tue 18/118:30 a.m.SJU - YUL

1 stop7h 46mUnited Airlines

Deal found 14/9C$ 569

Tue 3/33:00 p.m.YUL - SJU

1 stop8h 36mUnited Airlines

Mon 9/37:35 a.m.SJU - YUL

1 stop13h 26mUnited Airlines

Deal found 14/9C$ 583

Direct flights from Montreal to San Juan
Explore direct flight options from Montreal to San Juan based on user searches, and compare prices and availability for your desired travel dates. Data last updated 15 September 2025.

Sun 4/18:00 a.m.YUL - SJU

Nonstop4h 30mAir Transat

Sun 18/12:35 p.m.SJU - YUL

Nonstop4h 40mAir Transat

Deal found 14/9C$ 745

Sun 18/18:00 a.m.YUL - SJU

Nonstop4h 30mAir Transat

Sun 25/12:35 p.m.SJU - YUL

Nonstop4h 40mAir Transat

Deal found 14/9C$ 908

Sun 25/18:00 a.m.YUL - SJU

Nonstop4h 30mAir Transat

Sun 8/22:35 p.m.SJU - YUL

Nonstop4h 40mAir Transat

Deal found 13/9C$ 975

Sun 28/128:00 a.m.YUL - SJU

Nonstop4h 30mAir Transat

Sun 4/12:35 p.m.SJU - YUL

Nonstop4h 40mAir Transat

Deal found 14/9C$ 1,221

Sun 21/128:00 a.m.YUL - SJU

Nonstop4h 30mAir Transat

Sun 4/12:35 p.m.SJU - YUL

Nonstop4h 40mAir Transat

Deal found 13/9C$ 1,261

Sun 1/38:15 a.m.YUL - SJU

Nonstop4h 40mAir Canada

Sun 8/32:45 p.m.SJU - YUL

Nonstop4h 45mAir Canada

Deal found 13/9C$ 1,464

Sun 1/38:00 a.m.YUL - SJU

Nonstop4h 30mAir Transat

Sun 8/31:35 p.m.SJU - YUL

Nonstop4h 40mAir Transat

Deal found 15/9C$ 1,513

Last-minute flights from Montreal to San Juan
Discover last-minute flight deals from Montreal to San Juan. Data last updated 15 September 2025 and is based on user searches.

Sat 20/97:50 a.m.YUL - SJU

2 stops15h 47mAmerican Airlines

Sat 27/91:40 p.m.SJU - YUL

2 stops20h 06mAmerican Airlines

Deal found 15/9C$ 485

Sat 20/93:41 p.m.YUL - SJU

1 stop8h 16mUnited Airlines

Sat 27/91:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 486

Sat 20/93:41 p.m.YUL - SJU

1 stop8h 16mUnited Airlines

Fri 3/101:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 522

Sat 20/93:41 p.m.YUL - SJU

1 stop8h 16mUnited Airlines

Tue 30/91:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 573

Mon 22/97:25 a.m.YUL - SJU

1 stop8h 27mAmerican Airlines

Wed 1/104:43 p.m.SJU - YUL

2 stops22h 46mAmerican Airlines

Deal found 15/9C$ 576

Tue 23/96:15 a.m.YUL - SJU

1 stop8h 29mUnited Airlines

Sat 27/91:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 437

Tue 23/96:15 a.m.YUL - SJU

1 stop8h 29mUnited Airlines

Fri 3/101:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 471

Tue 23/96:15 a.m.YUL - SJU

1 stop8h 29mUnited Airlines

Wed 1/101:30 p.m.SJU - YUL

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 562

Tue 23/96:45 a.m.YUL - SJU

2 stops13h 46mMultiple Airlines

Wed 1/104:51 p.m.SJU - YUL

1 stop25h 04mMultiple Airlines

Deal found 15/9C$ 597

Tue 23/96:45 a.m.YUL - SJU

2 stops13h 46mMultiple Airlines

Fri 3/109:26 p.m.SJU - YUL

1 stop20h 29mMultiple Airlines

Deal found 15/9C$ 605

Thu 25/912:59 p.m.YUL - SJU

2 stops22h 12mAmerican Airlines

Wed 1/104:43 p.m.SJU - YUL

2 stops22h 46mAmerican Airlines

Deal found 15/9C$ 506

One-way flights from Montreal to San Juan
Search for one-way flight options from Montreal to San Juan. Find affordable one-way fares based on user searches. Data last updated 15 September 2025.

Sat 15/113:00 p.m.YUL - SJU

1 stop8h 36mUnited Airlines

Deal found 15/9C$ 218

Wed 29/107:29 a.m.YUL - SJU

1 stop14h 41mAmerican Airlines

Deal found 14/9C$ 232

Tue 23/96:15 a.m.YUL - SJU

1 stop8h 29mUnited Airlines

Deal found 15/9C$ 243

Tue 30/96:00 a.m.YUL - SJU

1 stop7h 45mUnited Airlines

Deal found 15/9C$ 250

Sat 20/97:25 a.m.YUL - SJU

2 stops16h 12mAmerican Airlines

Deal found 15/9C$ 262

Sat 20/93:41 p.m.YUL - SJU

1 stop8h 16mUnited Airlines

Deal found 15/9C$ 271

Sat 11/107:20 p.m.YUL - SJU

1 stop6h 42mMultiple Airlines

Deal found 15/9C$ 289

Thu 18/97:29 a.m.YUL - SJU

2 stops27h 42mAmerican Airlines

Deal found 15/9C$ 291

Mon 22/93:41 p.m.YUL - SJU

1 stop8h 16mUnited Airlines

Deal found 15/9C$ 293

Thu 30/106:45 a.m.YUL - SJU

2 stops28h 34mMultiple Airlines

Deal found 15/9C$ 320

Sat 15/117:00 a.m.YUL - SJU

2 stops14h 22mAir Canada

Deal found 14/9C$ 333

Wed 29/1011:25 a.m.YUL - SJU

3 stops23h 31mMultiple Airlines

Deal found 14/9C$ 340

Fly from

Fly to

Route

Depart

Return

Price

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Sun 9/11

7:00 a.m.-2:40 p.m.

1 stop6h 40m

San Juan Luis Munoz Marin Intl

Tue 18/11

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

1 stop7h 46m

C$ 413

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Thu 15/1

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

1 stop12h 07m

San Juan Luis Munoz Marin Intl

Thu 22/1

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

1 stop8h 06m

C$ 471

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Thu 15/1

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

1 stop12h 07m

San Juan Luis Munoz Marin Intl

Tue 27/1

8:35 a.m.-9:17 p.m.

1 stop13h 42m

C$ 511

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 3/12

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Fri 12/12

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

1 stop7h 46m

C$ 515

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Thu 11/12

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Wed 17/12

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

1 stop7h 46m

C$ 521

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Fri 20/2

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

1 stop7h 09m

San Juan Luis Munoz Marin Intl

Sat 28/2

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

1 stop7h 52m

C$ 557

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

10:05 a.m.-11:20 p.m.

2 stops12h 15m

San Juan Luis Munoz Marin Intl

Thu 5/3

6:40 a.m.-3:20 p.m.

1 stop9h 40m

C$ 565

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Wed 12/11

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Tue 18/11

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

1 stop7h 46m

C$ 569

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 3/3

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

1 stop8h 36m

San Juan Luis Munoz Marin Intl

Mon 9/3

7:35 a.m.-9:01 p.m.

1 stop13h 26m

C$ 583

MontrealSan Juan

YUL - SJU

YULSJU

Montreal Pierre Elliott Trudeau Intl

Tue 21/10

8:00 a.m.-11:57 p.m.

2 stops15h 57m

San Juan Luis Munoz Marin Intl

Mon 27/10

1:05 a.m.-2:22 p.m.

2 stops13h 17m

C$ 637

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 19 results

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?

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, April is the cheapest month in which you can book a flight from Montreal to San Juan (average of C$ 254). Flying from Montreal to San Juan in July is currently the most expensive (average of C$ 580). 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?

One of the essential ways to save on airfare from Montreal to San Juan is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 24% on airfare.

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

Reviews of airlines servicing San Juan

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

7.7

Good

438 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Air Transat

7.7

Good

438 reviews

Air Transat

7.7

Good

438 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

United Airlines

7.4

Good

8,929 reviews

Air Transat

7.7

Good

438 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

American Airlines

7.2

Good

10,000 reviews

Air Transat

7.7

Good

438 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

WestJet

7.2

Good

3,091 reviews

Air Transat

7.7

Good

438 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

Air Canada

7.1

Good

10,000 reviews

Air Transat

7.7

Good

438 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Liam,Jun 2025

GLA - YYZ

To and from Glasgow with Air Transat. Excellent flights, food, service. Nothing but praise.

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 6h 40m. 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$ 366, 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$ 388 and C$ 400, 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$ 991, our data shows the cheapest flight currently is C$ 634. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - San Juan Luis Munoz Marin Intl), you can expect to pay C$ 372 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, April is the cheapest month in which you can book a flight from Montreal to San Juan (average of C$ 254). Flying from Montreal to San Juan in July is currently the most expensive (average of C$ 580). 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

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	CheapestC$ 366	AverageC$ 610	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	CheapestC$ 388	AverageC$ 633	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	CheapestC$ 400	AverageC$ 654	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Delta	CheapestC$ 433	AverageC$ 515	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air Transat	CheapestC$ 474	AverageC$ 778	FlexibilityNo cancel fee	On-time50%	Search Air Transat flights
WestJet	CheapestC$ 647	AverageC$ 789	FlexibilityNo cancel fee	On-time60%	Search WestJet flights

Fly with Cheapflights

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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Cheap flights from Montreal to San Juan from C$ 218

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 28/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Montreal to San Juan

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Montreal to San Juan

Cheapest flights from Montreal to San JuanExplore 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 15 September 2025.

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 15 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Montreal to San Juan that are best for you.

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.

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 12 September 2025.

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

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 15 September 2025.

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

Reviews of airlines servicing San Juan

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.

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?

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

What are the cheapest flights from Montreal to San Juan?

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

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

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

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

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Alternative routes for Montreal to San Juan

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Top 6 airlines flying from Montreal to San Juan

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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 15 September 2025.