$113+ Cheap flights from Washington, D.C. (WAS) 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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Washington, D.C. 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 Washington, D.C. to San Juan are usually found in July or March, booked 17 days in advance, depart on a Tuesday or Sunday and return on a Thursday
Cheap flight deals from Washington, D.C. to San Juan
Cheapest flights from Washington, D.C. to San JuanExplore the most affordable flight options available from Washington, D.C. to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.
Explore the most affordable flight options available from Washington, D.C. to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.
This Priceline deal was found by Cheapflights users on 12/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Super.com deal was found by Cheapflights users on 12/11. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Frontier deal was found by Cheapflights users on 12/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Super.com deal was found by Cheapflights users on 12/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Priceline deal was found by Cheapflights users on 12/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Frontier deal was found by Cheapflights users on 12/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
This Expedia deal was found by Cheapflights users on 12/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
This Frontier deal was found by Cheapflights users on 12/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flight deals from Washington, D.C. to San Juan
Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 December 12, 2025.
Round-trip from | $181 (CheapOair) |
|---|---|
One-way from | $113 (American Airlines) |
Popular in | December |
Cheapest in | July |
Average price | $449 |
Cheapflights Fare Finder
Use the filters below to find and compare flights from Washington, D.C. to San Juan that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
BaltimoreSan Juan
BWI - SJU
BWISJU
Baltimore/Washington
Tue 1/6
11:45 am-11:44 pm
2 stops10h 59m
San Juan Luis Munoz Marin Intl
Fri 1/9
8:05 pm-11:17 am
1 stop16h 12m
Washington, D.C.San Juan
DCA - SJU
DCASJU
Washington, D.C. Reagan-National
Tue 2/3
12:00 pm-12:35 am
2 stops11h 35m
San Juan Luis Munoz Marin Intl
Tue 2/10
12:10 pm-10:55 pm
1 stop11h 45m
Washington, D.C.San Juan
IAD - SJU
IADSJU
Washington, D.C. Dulles Intl
Tue 5/26
5:24 pm-9:24 pm
Nonstop4h 00m
San Juan Luis Munoz Marin Intl
Mon 6/1
1:05 am-7:19 am
1 stop6h 14m
Washington, D.C.San Juan
IAD - SJU
IADSJU
Washington, D.C. Dulles Intl
Mon 5/4
6:00 am-1:45 pm
1 stop7h 45m
San Juan Luis Munoz Marin Intl
Fri 5/8
1:00 am-7:19 am
1 stop6h 19m
BaltimoreSan Juan
BWI - SJU
BWISJU
Baltimore/Washington
Tue 1/20
10:05 am-12:36 am
2 stops13h 31m
San Juan Luis Munoz Marin Intl
Sat 1/24
7:45 am-4:06 pm
1 stop9h 21m
Washington, D.C.San Juan
DCA - SJU
DCASJU
Washington, D.C. Reagan-National
Wed 1/21
3:15 pm-12:36 am
1 stop8h 21m
San Juan Luis Munoz Marin Intl
Wed 1/28
2:15 pm-11:59 pm
2 stops10h 44m
BaltimoreSan Juan
BWI - SJU
BWISJU
Baltimore/Washington
Mon 1/5
5:42 pm-2:39 am
1 stop7h 57m
San Juan Luis Munoz Marin Intl
Fri 1/9
6:00 am-9:14 am
Nonstop4h 14m
BaltimoreSan Juan
BWI - SJU
BWISJU
Baltimore/Washington
Fri 4/10
11:24 am-3:12 pm
Nonstop3h 48m
San Juan Luis Munoz Marin Intl
Tue 4/14
8:29 pm-12:33 am
Nonstop4h 04m
BaltimoreSan Juan
BWI - SJU
BWISJU
Baltimore/Washington
Sat 1/3
11:24 am-4:12 pm
Nonstop3h 48m
San Juan Luis Munoz Marin Intl
Sat 1/10
9:29 pm-12:38 am
Nonstop4h 09m
Washington, D.C.San Juan
IAD - SJU
IADSJU
Washington, D.C. Dulles Intl
Mon 1/12
5:32 pm-10:22 pm
Nonstop3h 50m
San Juan Luis Munoz Marin Intl
Fri 1/16
8:10 am-11:15 am
Nonstop4h 05m
Best time to book a flight from Washington, D.C. to San Juan
Have a flexible travel schedule? Discover the best time to fly to San Juan from Washington, D.C. with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. to San Juan
How far ahead should I book a flight from Washington, D.C. to San Juan?
Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to San Juan. Price data was last updated on December 5, 2025.
To ensure you get the cheapest price possible for a flight from Washington, D.C. to San Juan, you should look to book at least 17 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 Washington, D.C. to San Juan?
Currently, June is the cheapest month in which you can book a flight from Washington, D.C. to San Juan (average of $86). Flying from Washington, D.C. to San Juan in December is currently the most expensive (average of $161). 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 WAS to SJU?
Find hourly flight availability from Washington, D.C. 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 December 12, 2025.
A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to San Juan at noon. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from Washington, D.C. to San Juan?
Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to San Juan. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Washington, D.C. to San Juan flight should consider departing on Wednesday at noon when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Washington, D.C. to San Juan
Explore weekly flight availability from Washington, D.C. 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 December 12, 2025.
The most flights from WAS to PR1 are scheduled on a Thursday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Washington, D.C. to San Juan?
How often are flights from Washington, D.C. to San Juan delayed?
About 18% of weekly flights between Washington, D.C. and San Juan have experienced delays in the past year, with the average delay time being 122 minutes.
What is the most punctual flight time for Washington, D.C. to San Juan flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening 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 Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Washington, D.C. to San Juan flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 16% 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 December 12, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to San Juan, such as Southwest, United Airlines, and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Food
Comfort
Crew
Entertainment
Overall
Boarding
Reviews
Thomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Washington, D.C. to San Juan
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from Washington, D.C. to San Juan
Discover the top 7 airlines that operate flights from Washington, D.C. 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 December 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$321 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$113 | Average$270 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$145 | Average$434 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$148 | Average$356 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$161 | Average$397 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$214 | Average$445 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$220 | Average$459 | FlexibilityNo cancel fee | On-time63% |