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San Juan

$81+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SJU
Apr 29 — May 61
Wed 4/29
Wed 5/6
1 adult, Economy
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Cheapflights Tip: The best prices from Baltimore/Washington to San Juan are usually found in July or June, booked 26 days in advance, depart on a Monday or Sunday and return on a Friday

Cheap 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 March 30, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 4/137:38 pm
BWI
-
SJU
Nonstop3h 50m
Frontier
Fri 4/1711:30 am
SJU
-
BWI
1 stop23h 21m
Frontier
Deal found 3/29$162
This Frontier deal was found by Cheapflights users on 3/28. 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.
Fri 4/107:38 pm
BWI
-
SJU
Nonstop3h 50m
Frontier
Thu 4/161:42 pm
SJU
-
BWI
Nonstop4h 12m
Frontier
Deal found 3/28$163
This Orbitz deal was found by Cheapflights users on 3/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/1310:19 am
BWI
-
SJU
1 stop8h 36m
Multiple Airlines
Thu 4/161:42 pm
SJU
-
BWI
Nonstop4h 12m
Multiple Airlines
Deal found 3/28$165
This Orbitz deal was found by Cheapflights users on 3/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:15 am
BWI
-
SJU
Nonstop3h 39m
Multiple Airlines
Fri 5/13:08 am
SJU
-
BWI
1 stop13h 42m
Multiple Airlines
Deal found 3/28$166
This Frontier deal was found by Cheapflights users on 3/28. 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.
Sat 4/115:42 pm
BWI
-
SJU
1 stop8h 19m
Frontier
Thu 4/161:42 pm
SJU
-
BWI
Nonstop4h 12m
Frontier
Deal found 3/28$169
This CheapOair deal was found by Cheapflights users on 3/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/126:25 am
BWI
-
SJU
1 stop12h 30m
Multiple Airlines
Thu 4/161:42 pm
SJU
-
BWI
Nonstop4h 12m
Multiple Airlines
Deal found 3/28$170
This Frontier deal was found by Cheapflights users on 3/29. 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.
Mon 4/137:38 pm
BWI
-
SJU
Nonstop3h 50m
Frontier
Thu 4/163:03 pm
SJU
-
BWI
1 stop9h 41m
Frontier
Deal found 3/29$171
This Frontier deal was found by Cheapflights users on 3/28. 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.
Mon 4/137:38 pm
BWI
-
SJU
Nonstop3h 50m
Frontier
Tue 4/146:30 am
SJU
-
BWI
1 stop10h 10m
Frontier
Deal found 3/28$172
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 4/136:15 am
BWI
-
SJU
Nonstop3h 39m
Multiple Airlines
Sat 4/188:00 am
SJU
-
BWI
1 stop8h 50m
Multiple Airlines
Deal found 3/29$173
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:25 pm
BWI
-
SJU
1 stop7h 04m
Frontier
Tue 5/53:03 am
SJU
-
BWI
1 stop6h 12m
Frontier
Deal found 3/27$174
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/116:15 am
BWI
-
SJU
Nonstop3h 39m
Spirit Airlines
Thu 4/1612:57 pm
SJU
-
BWI
1 stop9h 23m
Spirit Airlines
Deal found 3/30$175

Find 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 March 30, 2026.

Round-trip from

$162
(Kiwi.com)

One-way from

$81
(eDestinos)

Popular in

December

Cheapest in

July

Average price

$311
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. 13% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 March 30, 2026.
Use the filters below to find and compare flights from Baltimore to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sat 5/2

6:15 am-8:38 pm

2 stops14h 23m

San Juan Luis Munoz Marin Intl

Tue 5/5

1:00 am-2:13 pm

2 stops13h 13m

$285

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Tue 4/21

11:08 am-11:50 pm

2 stops12h 42m

San Juan Luis Munoz Marin Intl

Fri 4/24

1:00 am-5:33 pm

2 stops16h 33m

$326
Quickest round-trip

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 5/4

7:40 pm-11:40 pm

Nonstop4h 00m

San Juan Luis Munoz Marin Intl

Thu 5/7

4:25 pm-8:40 pm

Nonstop4h 15m

$375

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 4/6

11:08 am-8:34 pm

1 stop9h 26m

San Juan Luis Munoz Marin Intl

Fri 4/10

7:00 am-9:23 pm

2 stops14h 23m

$446

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Thu 4/16

11:08 am-8:34 pm

1 stop9h 26m

San Juan Luis Munoz Marin Intl

Fri 4/24

1:00 am-2:02 pm

2 stops13h 02m

$469

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Sun 6/7

1:45 pm-12:25 am

2 stops10h 40m

San Juan Luis Munoz Marin Intl

Tue 6/16

6:00 am-2:55 pm

2 stops8h 55m

$516

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 6/1

1:00 pm-11:55 pm

2 stops10h 55m

San Juan Luis Munoz Marin Intl

Fri 6/5

7:00 am-5:40 pm

2 stops10h 40m

$516

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Tue 6/16

3:35 pm-11:45 pm

2 stops8h 10m

San Juan Luis Munoz Marin Intl

Sat 6/20

6:30 am-4:00 pm

2 stops9h 30m

$516

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Mon 6/1

1:00 pm-11:55 pm

2 stops10h 55m

San Juan Luis Munoz Marin Intl

Sat 6/6

6:30 am-4:00 pm

2 stops9h 30m

$526

BaltimoreSan Juan

BWI - SJU

BWISJU

Baltimore/Washington

Thu 6/25

11:10 am-9:30 pm

2 stops10h 20m

San Juan Luis Munoz Marin Intl

Tue 6/30

6:00 am-12:15 pm

1 stop6h 15m

$526

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 March 13, 2026.

Booking 26 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, January is the cheapest month in which you can book a flight from Baltimore to San Juan (average of $73). Flying from Baltimore to San Juan in December is currently the most expensive (average of $166). 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 March 30, 2026.

A simple way to save on the total cost of your ticket is to fly from Baltimore to San Juan in the afternoon. If you’re flexible enough to do this you can expect to save up to 31% on your trip compared to booking a flight in the evening.

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 March 28, 2026.

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. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Baltimore to San Juan

Explore weekly flight availability from Baltimore to San Juan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 30, 2026.

The most flights from BWI to PR1 are scheduled on a Monday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

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

How often are flights from Baltimore to San Juan delayed?

About 26% of weekly flights between Baltimore and San Juan have experienced delays in the past year, with the average delay time being 136 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

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

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

Over the last year, Spirit Airlines have had the lowest number of delays on this route, with just 22% 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 March 30, 2026.
See what other customers who have flown with Southwest,JetBlue, andAmerican 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
4,329 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,329 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,906 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,533 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Spirit Airlines
6.3
Okay
8,565 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
3,009 reviews
Southwest
8.0
Very good
4,329 reviews

Boarding

8.1

Crew

8.6

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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 2 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 4h. The distance between Baltimore and San Juan is about 1568 mi. This flight may include one or multiple stops.

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

    Spirit Airlines, at $122, 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 62% 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $68. Frontier flights start at $72 while deals on American Airlines start at $88 one-way.

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

    Consider Spirit Airlines (83%), Frontier (60%) or Southwest (59%) 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 $100. On average you can expect to pay $355. The most popular route, (Baltimore/Washington - San Juan Luis Munoz Marin Intl), can usually be booked for $163.

  • 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, January is the cheapest month in which you can book a flight from Baltimore to San Juan (average of $73). Flying from Baltimore to San Juan in December is currently the most expensive (average of $166). 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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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 March 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$122Average$273FlexibilityNo cancel feeOn-time65%
FrontierCheapest$142Average$337FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$146Average$374FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$172Average$434FlexibilityNo cancel feeOn-time69%
DeltaCheapest$172Average$439FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$225Average$458FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$344Average$508FlexibilityNo cancel feeOn-time63%

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