Washington → San Juan flights
Washington (DCA, IAD)→San Juan (SIG, SJU)
from$147
Last observed price · Last checked: 11 Aug 2026 · Price may change
Selected search
Last checked: 11 Aug 2026 · Price may change
$147
Fri 2 Oct 2026 → Sun 4 Oct 2026
Southwest Airlines1 stop2 nights
CheapestLast checked: 11 Aug 2026 · Price may change
$147 lowest5h 20m fastest
Tickets found in the last 7 days
The lowest fares our queries caught, cheapest first.
Starting prices by month
The lowest fare our queries observed in each month. Open a month to see its days; click a day with no price and we will search it for you.
Observed priceLowest monthno price observedLast checked: 11 Aug 2026
Washington → San JuanFri 2 Oct 2026 · $147
Find flightsRoute facts
Direct flights
Non-stop
DCA - SIG, 5h 20m
Airlines seen
2
Frontier Airlines, Southwest Airlines
Cheapest month
October 2026
$147
Typical duration
5h 20m
Alternative airports
2
IAD, SJU
Frequently asked
Are there direct flights from Washington to San Juan?+−
Yes. We have seen non-stop flights on this route, flown by JetBlue, United Airlines.
How much is a flight from Washington to San Juan?+−
The lowest fare we have observed is $147, found on 11 Aug 2026. Prices move, so read it as a floor rather than a quote.
Which airlines fly from Washington to San Juan?+−
These are the carriers we have seen on the route: Frontier Airlines, Southwest Airlines.
When is the cheapest month to fly from Washington to San Juan?+−
In our observations October 2026 is the cheapest month so far, at $147.
Similar routes
Last checked: 11 Aug 2026