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Washington to San Juan flights

Round trip · Economy · Prices per person in USD

Prices updated

Cheapest found $258 Nov 6 – 13 · 1 stop Book this fare
Usual price $290 The cheapest we found is 11% less
Cheapest month November From $258

Prices are low right now

$258 is $32 (11%) below the usual $290 for Washington → San Juan.

Buy now or wait? We're still learning this route. We have 1 day of prices so far and need about a week to say whether to book or wait.

Not ready to book? Get an email when Washington → San Juan drops below your price.

Cheapest round trip by month

Lowest fare found per departure month
Cheapest month Below usual Usual price $290
Cheapest round trip from Washington to San Juan by departure month
MonthCheapest round trip
September 2026No fares found yet
October 2026$290
November 2026$258 (cheapest month)
December 2026$629

Cheapest dates in the next 4 months

Round trip, per person
  • Nov 6 – 13 7 nights · leave Fri
    $258 −11% vs usual
    Frontier Airlines 1 stop · 5h 26m
    Book
  • Oct 9 – 13 4 nights · leave Fri
    $290
    Frontier Airlines 1 stop · 5h 40m
    Book
  • Dec 30 – Jan 3, 2027 4 nights · leave Wed
    $629 +117% vs usual
    Frontier Airlines 2 stops · 8h 10m
    Book

Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert

Plan the rest of your trip

San Juan · Nov 6 – 13

Travel insurance · EKTA Airport transfer · Kiwitaxi

Partner links: we may earn a commission if you book, at no extra cost to you.

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Washington to San Juan: questions

How much is a flight from Washington to San Juan?

The cheapest round trip we have found right now is $258, leaving November 6 and returning November 13. The usual price on this route is about $290, so this fare is 11% less. Prices are per person, economy, in USD.

What is the cheapest month to fly from Washington to San Juan?

November 2026, with round trips from $258. The most expensive month in our data is December (from $629). Based on the 3 months ahead we have prices for.

About this route

We track round-trip economy fares from Washington (United States) to San Juan (Puerto Rico) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $258, departing November 6 and returning November 13, about 11% below the usual $290. The cheapest month to fly in our data is November, from $258. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.

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