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San Juan

$85+ Cheap flights from Baltimore (BWI) 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SJU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Baltimore/Washington to San Juan are usually found in March or February, booked 41 days in advance, depart on a Monday or Tuesday and return on a Saturday

Cheap flight deals from Baltimore to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) 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 September 11, 2025.

Round-trip from

$175
(Kiwi.com)

One-way from

$85
(Cheapflightsfares)

Popular in

December

Cheapest in

March

Average price

$345
From Baltimore/Washington to San Juan
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One-way flight from Baltimore/Washington to San Juan
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Highest demand for flights based on searches. 7% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 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 Baltimore to San Juan

Cheapest flights from Baltimore to San Juan
Explore the most affordable flight options available from Baltimore to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Thu 10/28:42 pmBWI - SJU
Nonstop4h 01mSpirit Airlines
Sat 10/46:44 amSJU - BWI
1 stop8h 48mSpirit Airlines
Deal found 9/9$175
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Thu 9/258:42 pmBWI - SJU
Nonstop4h 01mSpirit Airlines
Sat 10/46:44 amSJU - BWI
1 stop8h 48mSpirit Airlines
Deal found 9/9$176
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/288:42 pmBWI - SJU
Nonstop4h 01mSpirit Airlines
Wed 10/16:44 amSJU - BWI
1 stop8h 48mSpirit Airlines
Deal found 9/10$177
This Kiwi.com deal was found by Cheapflights users on 9/10. 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.
Sat 11/156:45 amBWI - SJU
1 stop8h 38mSpirit Airlines
Sun 11/163:59 amSJU - BWI
Nonstop3h 58mSpirit Airlines
Deal found 9/10$178
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Sun 9/288:42 pmBWI - SJU
Nonstop4h 01mSpirit Airlines
Thu 10/27:05 amSJU - BWI
Nonstop4h 00mSpirit Airlines
Deal found 9/8$179
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sun 11/910:00 pmBWI - SJU
Nonstop4h 01mSpirit Airlines
Thu 11/133:59 amSJU - BWI
Nonstop3h 58mSpirit Airlines
Deal found 9/9$180
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:42 pmBWI - SJU
Nonstop4h 01mSpirit Airlines
Sat 9/276:44 amSJU - BWI
1 stop8h 48mSpirit Airlines
Deal found 9/9$181
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/231:17 pmBWI - SJU
1 stop7h 39mSpirit Airlines
Sat 9/276:44 amSJU - BWI
1 stop8h 48mSpirit Airlines
Deal found 9/8$186
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/241:17 pmBWI - SJU
1 stop7h 39mSpirit Airlines
Wed 10/16:44 amSJU - BWI
1 stop8h 48mSpirit Airlines
Deal found 9/11$187
This Kiwi.com deal was found by Cheapflights users on 9/8. 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.
Sun 9/288:42 pmBWI - SJU
Nonstop4h 01mSpirit Airlines
Mon 10/62:49 amSJU - BWI
1 stop9h 51mSpirit Airlines
Deal found 9/8$188
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:42 pmBWI - SJU
Nonstop3h 54mSpirit Airlines
Mon 11/33:48 amSJU - BWI
1 stop9h 52mSpirit Airlines
Deal found 9/10$189

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore 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 September 11, 2025.
Use the filters below to find and compare flights from Baltimore to San Juan that are best for you.

Fly from

Baltimore

Fly to

San Juan

Route

Depart

Return

Price

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sun 9/28

6:29 am-2:44 pm

1 stop8h 15m

San Juan Luis Munoz Marin Intl

Tue 9/30

1:05 am-2:08 pm

2 stops13h 03m

$281

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Wed 10/1

10:51 am-11:57 pm

2 stops13h 06m

San Juan Luis Munoz Marin Intl

Fri 10/3

1:05 am-2:08 pm

2 stops13h 03m

$363

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 9/22

10:51 am-11:57 pm

2 stops13h 06m

San Juan Luis Munoz Marin Intl

Fri 9/26

1:05 am-2:08 pm

2 stops13h 03m

$373

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Tue 11/18

10:56 am-12:36 am

2 stops12h 40m

San Juan Luis Munoz Marin Intl

Wed 12/3

2:05 am-1:50 pm

2 stops12h 45m

$399

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Wed 9/24

6:00 am-3:42 pm

1 stop9h 42m

San Juan Luis Munoz Marin Intl

Tue 9/30

1:05 am-2:08 pm

2 stops13h 03m

$399

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Wed 12/3

6:25 pm-11:20 pm

Nonstop3h 55m

San Juan Luis Munoz Marin Intl

Thu 12/11

4:40 pm-8:00 pm

Nonstop4h 20m

$402

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Wed 12/3

6:25 pm-11:20 pm

Nonstop3h 55m

San Juan Luis Munoz Marin Intl

Wed 12/10

4:40 pm-8:00 pm

Nonstop4h 20m

$402

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 11/8

6:00 pm-11:00 pm

Nonstop4h 00m

San Juan Luis Munoz Marin Intl

Wed 11/12

6:40 am-9:55 am

Nonstop4h 15m

$402

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Thu 10/2

8:40 pm-12:45 am

Nonstop4h 05m

San Juan Luis Munoz Marin Intl

Tue 10/7

6:10 am-10:20 am

Nonstop4h 10m

$402

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 10/6

8:40 pm-12:45 am

Nonstop4h 05m

San Juan Luis Munoz Marin Intl

Wed 10/8

10:50 am-6:10 pm

1 stop7h 20m

$407

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 results
1
2

Best time to book a flight from Baltimore to San Juan

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

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

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to San Juan. Price data was last updated on August 29, 2025.

Booking 41 days in advance of your planned departure date is, on average, the best time to get cheap flights from Baltimore 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 Baltimore to San Juan?

Currently, September is the cheapest month in which you can book a flight from Baltimore to San Juan (average of $254). Flying from Baltimore to San Juan in June is currently the most expensive (average of $339). 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 BWI to SJU?

Find hourly flight availability from Baltimore 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 September 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Baltimore to San Juan in the morning. If you’re flexible enough to do this you can expect to save up to 10% on your trip compared to booking a flight at noon.

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

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

Travelers seeking maximum savings on their Baltimore to San Juan flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday at noon 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 Baltimore 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 September 11, 2025.
See what other customers who have flown with Southwest, Delta, and American Airlines from Baltimore to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Overall

8.0

Entertainment

7.5

Comfort

8.0

Food

7.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

    Located just 8.5 mi from the city center, Baltimore/Washington is the airport most travelers will use when flying to San Juan from Baltimore. Booking flights from Baltimore/Washington (BWI) to San Juan should be relatively easy as there is 1 daily outbound flight to San Juan from 7 different airlines.

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

    Departing from Baltimore to San Juan will take you 8h 15m. The distance between Baltimore and San Juan is about 1568 mi.

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

    Spirit Airlines, at $98, was found to be the cheapest airline from Baltimore to San Juan.Alternate airlines to your destination round-trip include Frontier and Delta. Users have found that Spirit Airlines is 67% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Baltimore to San Juan?

    Consider Southwest (64%), Spirit Airlines (52%) or Frontier (35%) when booking your flight. These represent the most reliable airlines when flying from Baltimore to San Juan.

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

    The cheapest flight price from Baltimore to San Juan is $84. On average you can expect to pay $265. The most popular route, (Baltimore/Washington - San Juan Luis Munoz Marin Intl), can usually be booked for $144.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Baltimore to San Juan (average of $254). Flying from Baltimore to San Juan in June is currently the most expensive (average of $339). 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

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Alternative routes for Baltimore to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Baltimore to San Juan

Discover the top 7 airlines that operate flights from Baltimore 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$98Average$254FlexibilityNo cancel feeOn-time65%
FrontierCheapest$121Average$272FlexibilityNo cancel feeOn-time62%
DeltaCheapest$198Average$400FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$199Average$424FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$207Average$390FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$215Average$478FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$344Average$482FlexibilityNo cancel feeOn-time63%

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