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Cheap flights from Baltimore Washington International to San Juan

Compare Baltimore Washington International to San Juan flight deals

Find the cheapest month or even day of the year to fly to San Juan

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Flight deals from Baltimore Washington International to San Juan

Looking for a cheap last-minute deal or the best return flight from Baltimore Washington International to San Juan? Find the lowest prices on one-way and return tickets right here.
San Juan.$84 per passenger.Departing Mon, 19 Jan.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Baltimore Washington International on Mon, 19 Jan, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From $84, select.
San Juan.$102 per passenger.Departing Wed, 11 Feb.One-way flight with Spirit Airlines.Outbound direct flight with Spirit Airlines departs from Baltimore Washington International on Wed, 11 Feb, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From $102, select.
San Juan.$116 per passenger.Departing Mon, 2 Mar.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Mon, 2 Mar, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From $116, select.
San Juan.$116 per passenger.Departing Sat, 11 Apr.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Sat, 11 Apr, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From $116, select.
San Juan.$133 per passenger.Departing Mon, 9 Mar.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Baltimore Washington International on Mon, 9 Mar, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From $133, select.
San Juan.$142 per passenger.Departing Fri, 10 Apr.One-way flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Baltimore Washington International on Fri, 10 Apr, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From $142, select.
San Juan.$161 per passenger.Departing Sat, 26 Sep.One-way flight with United.Outbound indirect flight with United, departs from Baltimore Washington International on Sat, 26 Sep, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From $161, select.
San Juan.$231 per passenger.Departing Tue, 11 Aug.One-way flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Baltimore Washington International on Tue, 11 Aug, arriving in San Juan Luis Munoz Marin.Price includes taxes and charges.From $231, select.

Find the cheapest month to fly from Baltimore Washington International to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Baltimore Washington International to San Juan flights are currently cheapest in January.
Jan
from $84
Feb
from $102
Mar
from $116
Apr
from $116
May
from $258
Jun
from $244
Jul
from $311
Aug
from $231
Sep
from $161
Oct
Find prices
Nov
Find prices
Dec
Find prices

Direct flights from Baltimore Washington International to San Juan

Alternative Baltimore Washington International to San Juan routes

Looking for the cheapest, fastest or easiest route from Baltimore Washington International to San Juan? You could fly into the following airports instead.

Washington D.C. to San Juan: Flight information

The things to know before you go.
Cheapest flight found$84
Cheapest month to flyJanuary
Average flight time4 hrs
Most popular airlineSouthwest Airlines
Average flights per week30

Finding cheap flights from Baltimore Washington International to San Juan: Frequently asked questions

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.
The best price we found for a return flight from Baltimore Washington International to San Juan is $183. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours is the average flight time from Baltimore Washington International to San Juan.
Southwest Airlines, Spirit Airlines and Frontier Airlines fly direct from Baltimore Washington International to San Juan.
As of January 2026, there are 30 flights per week flying from Baltimore Washington International to San Juan.
The cheapest month to fly from Baltimore Washington International to San Juan is usually January.
If you're flying from Baltimore Washington International Airport, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the centre of San Juan. We've found flights into this airport from $183.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Baltimore Washington International Airport to San Juan on Saturday, 10 January 2026.
Yes – the average flight time is 4 hours.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.
In January, the average temperature is usually around 25°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.
Currently, Frontier Airlines offers the cheapest flight tickets to San Juan.

Flying from Baltimore/Wash International Thurgood Marshall Airport (BWI) to San Juan: what you need to know

  • The average length of a direct flight from Baltimore/Wash International Thurgood Marshall Airport to San Juan is 4 hours 10 minutes.

  • San Juan's timezone is UTC-4, which is the same as Washington DC (the location of Baltimore/Wash International Thurgood Marshall Airport).

  • The busiest route is from Baltimore/Wash International Thurgood Marshall Airport (BWI) to Luis Munoz Marin International Airport (SJU). You can select from 14 weekly services between these two airports. If you'd like to get on your way as soon as you can, the earliest flight from BWI to SJU is the 06:20 Spirit Airlines option. If you'd rather fly out later on, the last departure is at 21:59 with Spirit Airlines.

  • To avoid missing your BWI to San Juan flight, leave plenty of time to check in and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Planning to travel during a peak period like public or school holidays? Expect longer queues at check-in and security. Play it safe and arrive up to four hours before international flights and two hours ahead of domestic departures.

  • Start your trip at BWI and fly straight to Luis Munoz Marin International Airport (SJU). That's where you can expect to touch down when searching for Baltimore/Wash International Thurgood Marshall Airport to San Juan tickets.

  • Top airlines that operate direct flights from Baltimore/Wash International Thurgood Marshall Airport to San Juan include:

  • We make it simple to book plane tickets from BWI to San Juan with a stopover. To see the options, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to tour your chosen city. The most sought-after stopovers include:

    • Orlando International Airport (MCO)

    • Raleigh-Durham International Airport (RDU)

    • Punta Cana International Airport (PUJ)

  • Located around 40 kilometres from central Washington DC, BWI can be reached in about 50 minutes by car. Travelling on public transport takes roughly 1 hour 30 minutes.

  • Searching for a hotel near BWI? If you've booked an early flight from Baltimore/Wash International Thurgood Marshall Airport to San Juan, these stays will get you from your pillow to the plane in no time:

  • Of the flights that depart from Baltimore/Wash International Thurgood Marshall Airport, 77.13% land on schedule at their destination.

How to find the cheapest flights from Baltimore/Wash International Thurgood Marshall Airport (BWI) to San Juan

  • $84 is the cheapest price we've found for a one-way Baltimore/Wash International Thurgood Marshall Airport to San Juan flight. A return ticket right now is $183. Depending on how early you book and the availability, these fares could change.

  • To secure cheap flights from BWI to San Juan, reserve your journey one month before your departure.

  • The best month for landing cheap Baltimore/Wash International Thurgood Marshall Airport to San Juan tickets is May. Use the 'Whole month' tool to compare flight prices, then choose the dates offering the lowest fares.

  • Spend less time searching for cheap flights from BWI to San Juan by creating a Price Alert. You'll get an email or notification through the app when a lower fare becomes available.

  • Choose your preferred arrival and departure times, airlines and number of stops with our filters. Then, sort the results for your flight from Baltimore/Wash International Thurgood Marshall Airport to San Juan by 'Fastest,' 'Cheapest' or 'Best.'

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • The distance from Luis Munoz Marin International Airport (SJU) to central San Juan is roughly 8 kilometres. It'll take you around 10 minutes to get to the centre driving.

  • If you're using public transport, expect a journey time of around 55 minutes.

  • If you have a late flight from Baltimore/Wash International Thurgood Marshall Airport to San Juan, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and resting soon after at one of these hotels near SJU:

  • Begin your adventure by picking up a Luis Munoz Marin International Airport rental car. Grab a set of wheels from Sixt, Ace Rent a Car or U-Save to explore San Juan and beyond.

  • Booking your ride from Luis Munoz Marin International Airport around two weeks in advance of your flight from BWI to San Juan can help you get the lowest rate.

Fernando Luis Ribas Dominicci Airport (SIG)

  • The centre of San Juan is about 8 kilometres from Fernando Luis Ribas Dominicci Airport (SIG). After your flight from Baltimore/Wash International Thurgood Marshall Airport to San Juan has touched down and you've made your way through the terminal, expect a drive of about 15 minutes.

  • Public transport will get you there in around 1 hour.

  • You'll find some great places ready to welcome you near SIG. Settle in and get cosy after your BWI to San Juan flight at any of these perfectly located options:

Best time to go to San Juan

  • Carefully consider your travel dates before securing your flight from Baltimore/Wash International Thurgood Marshall Airport to San Juan. The city buzzes in peak season, but rates are usually higher and attractions can be busy. Go to San Juan in low season if you like a quieter vibe.

  • Book a Baltimore/Wash International Thurgood Marshall Airport to San Juan plane ticket with a departure in September if you're eager to explore the city during its warmest month. Expect temperatures to range from 23ºC (73ºF) to 33ºC (91ºF).

  • If you'd rather travel in cooler conditions, search for a cheap ticket from BWI to San Juan in February when temperatures average between 20ºC (68ºF) and 28ºC (82ºF).

More about San Juan

  • When it comes to looking for somewhere to lay your head, you'll find the most popular stays in San Juan right here. Check out these hotels as soon as you've booked your flight from Baltimore/Wash International Thurgood Marshall Airport to San Juan:

  • There are so many things to explore in this city it can be tricky to know where to begin. La Garita del morro de san juan bahia, Castillo San Felipe del Morro and Fortaleza Street are highlights which should be on any good San Juan itinerary.

Explore more of Puerto Rico

  • San Juan has plenty to offer, but there are so many other parts of Puerto Rico just waiting to be explored. About 113 kilometres west of San Juan, a visit to Aguadilla will keep you on the move. Don't miss top attractions like El Parterre, Aguadilla Ice Skating Arena and Bandera de los Reyes Magos.

  • Isabela is another sought-after destination in Puerto Rico and is around 105 kilometres west of San Juan. No trip is complete without dropping by Amarillo Mango, Urb. Llanos Piscina Park and Noches de Artesania.

More travel options

Plan the rest of your trip from Washington D.C. to San Juan

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.