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$375+ Cheap flights from San Juan to Barcelona

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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — BCN
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from San Juan to Barcelona are usually found in February or August, booked 89 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from San Juan to Barcelona

Discover tips and strategies to find the most affordable flight options for your journey from San Juan (PR1) to Barcelona (S37). 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 septiembre 16, 2025.

Round-trip from

$420
(Finnair)

One-way from

$375
(Delta)

Popular in

June

Cheapest in

February

Average price

$731
From San Juan to Barcelona
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One-way flight from San Juan to Barcelona
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Highest demand for flights based on searches. 28% potential increase in price ($307 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from San Juan to Barcelona

Cheapest flights from San Juan to Barcelona
Explore the most affordable flight options available from San Juan to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 16, 2025.

This Finnair deal was found by Cheapflights users on 9/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/186:00 amSJU - BCN
1 stop20h 05mMultiple Airlines
mié. 11/2611:00 amBCN - SJU
1 stop18h 44mMultiple Airlines
Deal found 9/16$420
This Finnair deal was found by Cheapflights users on 9/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/2711:56 amSJU - BCN
1 stop14h 09mMultiple Airlines
jue. 11/2012:30 pmBCN - SJU
1 stop16h 22mMultiple Airlines
Deal found 9/16$422
This Finnair deal was found by Cheapflights users on 9/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/86:42 pmSJU - BCN
2 stops33h 18mMultiple Airlines
mar. 11/1812:30 pmBCN - SJU
1 stop16h 22mMultiple Airlines
Deal found 9/16$426
This United Airlines deal was found by Cheapflights users on 9/16. 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.
lun. 11/102:05 amSJU - BCN
2 stops26h 30mUnited Airlines
mar. 11/183:05 pmBCN - SJU
1 stop34h 55mUnited Airlines
Deal found 9/16$432
This Air Canada deal was found by Cheapflights users on 9/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/112:05 amSJU - BCN
2 stops26h 30mAir Canada
vie. 11/211:35 pmBCN - SJU
2 stops30h 15mAir Canada
Deal found 9/16$437
This United Airlines deal was found by Cheapflights users on 9/16. 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.
mar. 11/112:05 amSJU - BCN
2 stops26h 30mUnited Airlines
vie. 11/2110:30 amBCN - SJU
1 stop16h 52mUnited Airlines
Deal found 9/16$441
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/274:55 pmSJU - BCN
1 stop33h 25mUnited Airlines
mar. 10/711:15 amBCN - SJU
2 stops33h 29mUnited Airlines
Deal found 9/15$445
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/182:05 amSJU - BCN
2 stops26h 30mUnited Airlines
mar. 12/26:45 amBCN - SJU
2 stops20h 37mUnited Airlines
Deal found 9/15$449
This United Airlines deal was found by Cheapflights users on 9/16. 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.
mié. 10/13:56 pmSJU - BCN
1 stop15h 19mUnited Airlines
mié. 10/2211:15 amBCN - SJU
2 stops32h 30mUnited Airlines
Deal found 9/16$453
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/213:56 pmSJU - BCN
1 stop15h 19mUnited Airlines
vie. 11/76:45 amBCN - SJU
2 stops19h 15mUnited Airlines
Deal found 9/15$458
This United Airlines deal was found by Cheapflights users on 9/16. 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.
lun. 11/34:52 pmSJU - BCN
2 stops19h 43mUnited Airlines
jue. 11/136:45 amBCN - SJU
2 stops19h 15mUnited Airlines
Deal found 9/16$459

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Juan to Barcelona 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 septiembre 16, 2025.
Use the filters below to find and compare flights from San Juan to Barcelona that are best for you.

Fly from

San Juan

Fly to

Barcelona

Route

Depart

Return

Price

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

mar. 11/18

6:00 am-7:05 am

1 stop20h 05m

Barcelona-El Prat

mié. 11/26

11:00 am-12:44 am

1 stop18h 44m

$420

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

sáb. 9/27

4:55 pm-8:20 am

1 stop33h 25m

Barcelona-El Prat

mar. 10/7

11:15 am-2:44 pm

2 stops33h 29m

$445

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

mar. 11/18

4:52 pm-1:10 pm

1 stop15h 18m

Barcelona-El Prat

mar. 12/2

6:45 am-10:22 pm

2 stops20h 37m

$458

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

dom. 11/2

8:30 am-9:35 am

2 stops20h 05m

Barcelona-El Prat

mar. 11/11

6:45 am-10:22 pm

2 stops20h 37m

$458

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

lun. 10/20

1:30 pm-9:00 am

1 stop13h 30m

Barcelona-El Prat

mar. 10/28

6:45 am-9:22 pm

2 stops43h 37m

$458

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

lun. 11/3

4:52 pm-5:35 pm

2 stops19h 43m

Barcelona-El Prat

jue. 11/13

6:45 am-9:00 pm

2 stops19h 15m

$459

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

lun. 10/27

1:20 pm-9:00 am

1 stop14h 40m

Barcelona-El Prat

jue. 11/13

10:30 am-10:22 pm

1 stop16h 52m

$462

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

mié. 11/12

4:52 pm-5:35 pm

2 stops19h 43m

Barcelona-El Prat

vie. 11/21

10:30 am-10:22 pm

1 stop16h 52m

$463

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

mar. 9/30

7:30 am-6:00 am

2 stops16h 30m

$375

San JuanBarcelona

SJU - BCN

SJUBCN

San Juan Luis Munoz Marin Intl

dom. 11/2

5:00 am-8:00 am

2 stops22h 00m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 12 results
1
2

Best time to book a flight from San Juan to Barcelona

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

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

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

To ensure you get the cheapest price possible for a flight from San Juan to Barcelona, you should look to book at least 89 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 San Juan to Barcelona?

Currently, January is the cheapest month in which you can book a flight from San Juan to Barcelona (average of $523). Flying from San Juan to Barcelona in June is currently the most expensive (average of $1,061). 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 SJU to BCN?

Find hourly flight availability from San Juan to Barcelona. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 16, 2025.

A simple way to save on the total cost of your ticket is to fly from San Juan to Barcelona in the afternoon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from San Juan to Barcelona. Price data was last updated on December 16, 2024.

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

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

Reviews of airlines servicing Barcelona

Get insights into the airlines that provide service to Barcelona. 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 Barcelona. Reviews last updated septiembre 16, 2025.
Get a feel of what it's like to fly with Delta, KLM, and United Airlines from San Juan to Barcelona by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kade,Sep 2023

LHR - SLC

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.
Delta
8.0
Very good
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kade,Sep 2023

LHR - SLC

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.
KLM
7.8
Good
1,386 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kade,Sep 2023

LHR - SLC

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.
United Airlines
7.4
Good
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kade,Sep 2023

LHR - SLC

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kade,Sep 2023

LHR - SLC

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.
Iberia
7.0
Good
2,924 reviews
Delta
8.0
Very good
7,957 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kade,Sep 2023

LHR - SLC

It was weird that we had to check after security and go to a corral which had no bathroom or other services about an hour before boarding. Had to check out of the corral to leave and check back in.

Related info for your journey

Find useful and relevant information for your journey from San Juan to Barcelona. 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 San Juan to Barcelona?

    United Airlines can get you from San Juan to Barcelona in just under 33h 25m. Your travel time can differ by up to . The distance between San Juan and Barcelona is about 4257 mi.

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

    Delta, at $418, was found to be the cheapest airline from San Juan to Barcelona.Alternate airlines to your destination round-trip include United Airlines and Air France. Delta is 46% cheaper than the average price of flights available within the next 90 days to this destination.

  • Where are the most common layover locations when flying from San Juan to Barcelona?

    The most popular layover on flights from San Juan to Barcelona is Madrid.

  • What are some popular things to do or see while on a layover in Madrid?

    Puerta del Sol, Plaza Mayor, and Spain Building are currently the most popular points of interest in Madrid at the moment. Puerta del Sol, Plaza Mayor, and Spain Building can be accessed by traveling approximately 8.4 mi, 8.6 mi, and 8.5 mi, respectively from Madrid Barajas. Travelers in need of a car in Madrid can rent one for about $26 per day.

  • Where are the least popular layover locations for San Juan to Barcelona flights?

    San Juan to Barcelona flights have a layover in Miami the least frequently.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from San Juan to Barcelona (average of $523). Flying from San Juan to Barcelona in June is currently the most expensive (average of $1,061). 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 San Juan to Barcelona

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

Top 9 airlines flying from San Juan to Barcelona

Discover the top 9 airlines that operate flights from San Juan to Barcelona. 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 septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$418Average$888FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$430Average$772FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$460Average$720FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$460Average$632FlexibilityNo cancel feeOn-time70%
KLMCheapest$460Average$759FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$538Average$1,000FlexibilityNo cancel feeOn-time71%
Virgin AtlanticCheapest$560Average$779FlexibilityNo cancel feeOn-time72%
IberiaCheapest$571Average$947FlexibilityNo cancel feeOn-time77%
AviancaCheapest$809Average$989FlexibilityNo cancel feeOn-time71%

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