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$157+ Cheap flights from Cancún (CUN) to San Juan

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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
CUN — SJU
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheapflights Tip: The best prices from Cancun to San Juan are usually found in May or February, booked 29 days in advance, depart on a Tuesday or Thursday and return on a Tuesday

Cheap flight deals from Cancún to San Juan

Cheapest flights from Cancún to San Juan
Explore the most affordable flight options available from Cancún to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:28 pmCUN - SJU
2 stops23h 49mUnited Airlines
Mon 12/223:46 pmSJU - CUN
1 stop20h 39mUnited Airlines
Deal found 12/14$392
This United Airlines deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:30 amCUN - SJU
1 stop13h 56mUnited Airlines
Thu 12/187:45 amSJU - CUN
1 stop11h 05mUnited Airlines
Deal found 12/13$395
This Delta deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:00 amCUN - SJU
1 stop8h 28mDelta
Tue 12/237:30 amSJU - CUN
1 stop14h 50mDelta
Deal found 12/15$398
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1612:35 pmCUN - SJU
1 stop8h 47mUnited Airlines
Fri 12/1910:15 amSJU - CUN
1 stop11h 03mUnited Airlines
Deal found 12/14$448
This United Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:30 amCUN - SJU
1 stop13h 56mUnited Airlines
Tue 12/238:10 amSJU - CUN
1 stop13h 34mUnited Airlines
Deal found 12/14$472
This JetBlue deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:30 amCUN - SJU
1 stop7h 33mJetBlue
Thu 12/2512:00 pmSJU - CUN
1 stop6h 23mJetBlue
Deal found 12/14$490
This Kiwi.com deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 amCUN - SJU
1 stop8h 11mMultiple Airlines
Thu 12/2510:33 amSJU - CUN
2 stops50h 18mMultiple Airlines
Deal found 12/14$582
This Delta deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/168:00 amCUN - SJU
2 stops14h 59mDelta
Fri 12/197:00 amSJU - CUN
1 stop9h 33mDelta
Deal found 12/14$601
This Southwest deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/168:20 amCUN - SJU
2 stops12h 45mSouthwest
Thu 12/255:45 amSJU - CUN
2 stops15h 40mSouthwest
Deal found 12/14$614
This Southwest deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/158:20 amCUN - SJU
2 stops12h 45mSouthwest
Mon 12/227:30 amSJU - CUN
2 stops13h 15mSouthwest
Deal found 12/14$632
This JetBlue deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:18 amCUN - SJU
1 stop12h 38mJetBlue
Sun 1/411:25 pmSJU - CUN
1 stop10h 46mJetBlue
Deal found 12/13$645

Find flight deals from Cancún to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Cancún (CUN) 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 December 15, 2025.

Round-trip from

$306
(Delta)

One-way from

$157
(Frontier)

Popular in

November

Cheapest in

May

Average price

$358
From Cancun to San Juan
Search Deals
One-way flight from Cancun to San Juan
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Cancún 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 2,558,603 searches. Data last updated December 15, 2025.
Use the filters below to find and compare flights from Cancún to San Juan that are best for you.

Fly from

Cancún

Fly to

San Juan

Route

Depart

Return

Price

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Thu 2/19

8:00 am-11:58 pm

1 stop14h 58m

San Juan Luis Munoz Marin Intl

Wed 2/25

7:00 am-9:11 pm

2 stops15h 11m

$306

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Thu 2/19

8:38 am-11:58 pm

2 stops14h 20m

San Juan Luis Munoz Marin Intl

Tue 3/3

7:00 am-9:11 pm

2 stops15h 11m

$306

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Sat 1/24

1:00 pm-7:55 pm

1 stop5h 55m

San Juan Luis Munoz Marin Intl

Sun 2/1

8:00 am-10:32 am

1 stop27h 32m

$329

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Wed 1/28

8:00 am-5:17 pm

1 stop8h 17m

San Juan Luis Munoz Marin Intl

Wed 2/4

7:00 am-9:11 pm

2 stops15h 11m

$333

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Thu 1/29

2:57 pm-10:24 am

2 stops18h 27m

San Juan Luis Munoz Marin Intl

Thu 2/5

8:31 pm-10:32 am

1 stop15h 01m

$349

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Wed 1/28

9:47 am-6:35 pm

1 stop7h 48m

San Juan Luis Munoz Marin Intl

Wed 2/4

8:05 pm-9:13 am

1 stop14h 08m

$354

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Sat 1/24

1:00 pm-7:55 pm

1 stop5h 55m

San Juan Luis Munoz Marin Intl

Mon 2/2

6:14 pm-4:05 pm

2 stops22h 51m

$354

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Thu 1/29

11:55 am-8:02 pm

1 stop7h 07m

San Juan Luis Munoz Marin Intl

Thu 2/5

6:01 am-10:38 am

1 stop5h 37m

$357

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Sun 12/21

11:33 am-1:24 am

1 stop12h 51m

$183

CancúnSan Juan

CUN - SJU

CUNSJU

Cancun

Thu 2/19

2:23 pm-12:59 am

1 stop9h 36m

$198

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 18 results
1
2

Best time to book a flight from Cancún to San Juan

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

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

Use this chart to determine the optimal time to book a round-trip flight from Cancún to San Juan. Price data was last updated on December 12, 2025.

Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Cancún to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, May is the cheapest month in which you can book a flight from Cancún to San Juan (average of $143). Flying from Cancún to San Juan in July is currently the most expensive (average of $265). 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 CUN to SJU?

Find hourly flight availability from Cancún 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 December 15, 2025.

It’s optimal to fly from Cancún to San Juan in the evening. By choosing this option you can save up to 46% on the cost of your flight, compared to a flight in the morning.

How often are flights from Cancún to San Juan delayed?

About 27% of weekly flights between Cancún and San Juan have experienced delays in the past year, with the average delay time being 152 minutes.

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

Historically, flights departing in the early afternoon 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?

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

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

Over the last year, JetBlue have had the lowest number of delays on this route, with just 27% 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 December 15, 2025.
Read through reviews of airlines operating flights from Cancún to San Juan, such as Copa Airlines and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,557 reviews

Overall

7.6

Boarding

7.8

Food

6.8

Entertainment

6.8

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
Copa Airlines
7.6
Good
1,557 reviews
Copa Airlines
7.6
Good
1,557 reviews

Overall

7.6

Boarding

7.8

Food

6.8

Entertainment

6.8

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
JetBlue
7.2
Good
2,895 reviews
Copa Airlines
7.6
Good
1,557 reviews

Overall

7.6

Boarding

7.8

Food

6.8

Entertainment

6.8

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip

Related info for your journey

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

  • What airport do you fly from for flights from Cancún to San Juan?

    Located just 8.9 mi from the city center, Cancun is the airport most travelers will use when flying to San Juan from Cancún. Booking flights from Cancun (CUN) to San Juan should be relatively easy as there are 0 daily outbound flights to San Juan from 2 different airlines.

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

    A quick flight from Cancún to San Juan can take about 14h 58m. Delta provides one of the quickest options available for as low as $306. Cancún and San Juan are separated by a distance of 1367 mi.

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

    JetBlue, at $164, was found to be the cheapest airline from Cancún to San Juan. An alternate airline flying to your destination would be Copa Airlines. Users have found that JetBlue is 46% cheaper than the other options available to this destination.

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

    $131 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Spirit Airlines and Arajet, with prices starting from $145 and $146, respectively.

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

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

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

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

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

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

    Currently, May is the cheapest month in which you can book a flight from Cancún to San Juan (average of $143). Flying from Cancún to San Juan in July is currently the most expensive (average of $265). 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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Alternative routes for Cancún to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Cancún to Luis Munoz Marin Intl flights

Top 2 airlines flying from Cancún to San Juan

Discover the top 2 airlines that operate flights from Cancún 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 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$164Average$377FlexibilityNo cancel feeOn-time62%
Copa AirlinesCheapest$224Average$302FlexibilityNo cancel feeOn-time70%

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