HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Juan

$106+ 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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SJU
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to San Juan with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

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 October 28, 2025.

This Priceline deal was found by Cheapflights users on 10/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:27 amBWI - SJU
1 stop13h 08mMultiple Airlines
Sun 12/217:15 amSJU - BWI
Nonstop4h 14mMultiple Airlines
Deal found 10/26$178
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
Wed 12/318:18 pmBWI - SJU
Nonstop3h 48mMultiple Airlines
Wed 1/147:10 amSJU - BWI
2 stops17h 01mMultiple Airlines
Deal found 10/26$181
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1010:40 amBWI - SJU
1 stop12h 36mMultiple Airlines
Sat 12/207:15 amSJU - BWI
Nonstop4h 14mMultiple Airlines
Deal found 10/26$185
This Frontier deal was found by Cheapflights users on 10/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:18 pmBWI - SJU
Nonstop3h 48mFrontier
Sun 1/116:00 amSJU - BWI
Nonstop4h 14mFrontier
Deal found 10/26$186
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 12/1311:09 amBWI - SJU
Nonstop3h 46mMultiple Airlines
Tue 12/238:47 pmSJU - BWI
Nonstop4h 15mMultiple Airlines
Deal found 10/26$189
This Frontier deal was found by Cheapflights users on 10/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:00 pmBWI - SJU
1 stop9h 32mFrontier
Tue 11/257:10 amSJU - BWI
Nonstop4h 04mFrontier
Deal found 10/26$190
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:00 pmBWI - SJU
1 stop9h 32mFrontier
Sat 11/227:10 amSJU - BWI
Nonstop4h 04mFrontier
Deal found 10/28$191
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:18 pmBWI - SJU
Nonstop3h 48mFrontier
Sat 1/107:10 amSJU - BWI
2 stops14h 15mFrontier
Deal found 10/28$193
This Frontier deal was found by Cheapflights users on 10/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/147:52 pmBWI - SJU
1 stop12h 45mFrontier
Fri 12/194:09 pmSJU - BWI
Nonstop4h 14mFrontier
Deal found 10/27$195
This Priceline deal was found by Cheapflights users on 10/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1310:40 amBWI - SJU
1 stop12h 36mMultiple Airlines
Sat 12/204:09 pmSJU - BWI
Nonstop4h 14mMultiple Airlines
Deal found 10/27$196
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
Fri 12/127:06 pmBWI - SJU
1 stop16h 26mMultiple Airlines
Mon 12/224:09 pmSJU - BWI
Nonstop4h 14mMultiple Airlines
Deal found 10/26$197
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Wed 12/318:18 pmBWI - SJU
Nonstop3h 48mMultiple Airlines
Tue 1/62:59 amSJU - BWI
1 stop6h 30mMultiple Airlines
Deal found 10/28$199

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 October 28, 2025.

Round-trip from

$170
(Kiwi.com)

One-way from

$106
(Cheapflightsfares)

Popular in

December

Cheapest in

March

Average price

$333
From Baltimore/Washington to San Juan
Search Deals
One-way flight from Baltimore/Washington to San Juan
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 28, 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 1/25

10:05 am-12:36 am

2 stops13h 31m

San Juan Luis Munoz Marin Intl

Wed 1/28

2:05 am-2:11 pm

2 stops13h 06m

$299

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 12/6

10:20 am-12:36 am

2 stops13h 16m

San Juan Luis Munoz Marin Intl

Wed 12/10

2:05 am-5:25 pm

2 stops16h 20m

$343

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Tue 1/20

10:05 am-9:00 pm

1 stop9h 55m

San Juan Luis Munoz Marin Intl

Sun 1/25

2:05 am-2:11 pm

2 stops13h 06m

$380

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 1/12

10:05 am-12:36 am

2 stops13h 31m

San Juan Luis Munoz Marin Intl

Thu 1/22

2:05 am-2:11 pm

2 stops13h 06m

$381

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 12/8

10:20 am-9:00 pm

1 stop9h 40m

San Juan Luis Munoz Marin Intl

Tue 12/9

2:05 am-1:50 pm

2 stops12h 45m

$383

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Wed 1/21

10:05 am-9:00 pm

1 stop9h 55m

San Juan Luis Munoz Marin Intl

Fri 1/23

2:05 am-2:11 pm

2 stops13h 06m

$389

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sun 1/18

10:05 am-9:00 pm

1 stop9h 55m

San Juan Luis Munoz Marin Intl

Tue 1/27

7:45 am-4:06 pm

1 stop9h 21m

$389

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 11/17

6:15 am-9:26 pm

2 stops14h 11m

San Juan Luis Munoz Marin Intl

Wed 11/19

2:05 am-5:14 pm

2 stops16h 09m

$398

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 12/8

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

Mon 11/10

10:56 am-12:36 am

2 stops12h 40m

San Juan Luis Munoz Marin Intl

Tue 11/11

2:05 am-5:14 pm

2 stops16h 09m

$409

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 18 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 October 24, 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, June is the cheapest month in which you can book a flight from Baltimore to San Juan (average of $86). Flying from Baltimore to San Juan in September is currently the most expensive (average of $160). 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 October 28, 2025.

A simple way to save on the total cost of your ticket is to fly from Baltimore to San Juan in the evening. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the afternoon.

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 Wednesday afternoons when fares are most often at their lowest. Tuesday 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 October 28, 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
4,240 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
7.9
Good
7,994 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
11,032 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
8,116 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

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
3,124 reviews
Southwest
8.0
Very good
4,240 reviews

Overall

8.0

Food

7.0

Boarding

8.1

Entertainment

7.5

Comfort

8.0

Crew

8.6

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 are 0 daily outbound flights 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 13h 31m. 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 JetBlue. Users have found that Spirit Airlines is 68% cheaper than the other options available to this destination.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $113. Spirit Airlines flights start at $124 while deals on United Airlines start at $150 one-way.

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

    Consider Spirit Airlines (83%), Southwest (58%) or Frontier (40%) 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 $106. On average you can expect to pay $455. The most popular route, (Baltimore/Washington - San Juan Luis Munoz Marin Intl), can usually be booked for $159.

  • 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, June is the cheapest month in which you can book a flight from Baltimore to San Juan (average of $86). Flying from Baltimore to San Juan in September is currently the most expensive (average of $160). 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.

Alternative routes for Baltimore to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Luis Munoz Marin Intl flights
Philadelphia to Luis Munoz Marin Intl flights
Reagan-National to Luis Munoz Marin Intl flights
Baltimore to Luis Munoz Marin Intl flights
Dulles Intl to Ponce flights
Philadelphia to Ponce flights
Philadelphia to Aguadilla flights
Baltimore to Aguadilla flights
Reagan-National to Aguadilla flights
Reagan-National to Ponce flights
Dulles Intl to Aguadilla flights
Philadelphia to Mayagüez flights
Dulles Intl to Culebra flights
Salisbury to Luis Munoz Marin Intl flights
Reagan-National to Vieques flights
Reagan-National to Mayagüez flights
Dulles Intl to Vieques flights
Reagan-National to Culebra flights
Philadelphia to Vieques flights
Baltimore to Culebra flights
Philadelphia to Culebra flights
Baltimore to Vieques flights
Baltimore to Mayagüez flights

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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$98Average$254FlexibilityNo cancel feeOn-time65%
FrontierCheapest$122Average$284FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$173Average$381FlexibilityNo cancel feeOn-time62%
DeltaCheapest$198Average$384FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$199Average$409FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$215Average$476FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$347Average$486FlexibilityNo cancel feeOn-time63%

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.