AirHint found the following cheapest return flights from Washington (IAD) to San Jose (SJO) in November 2025 (see full year).

Return flights

15 Nov - 22 Nov	United
15 Nov - 13 Dec	United
12 Nov - 19 Nov	United
13 Nov - 17 Nov	Avianca
13 Nov - 16 Nov	Copa
14 Nov - 16 Nov	Copa
27 Nov - 05 Dec	Copa
29 Nov - 02 Dec	Copa
21 Nov - 24 Nov	Frontier Airlines
29 Nov - 06 Dec	Copa
09 Nov - 16 Nov	Copa
26 Nov - 03 Dec	Copa
22 Nov - 25 Nov	Avelo Airlines
24 Nov - 30 Nov	Allegiant Air
26 Nov - 30 Nov	Allegiant Air
26 Nov - 01 Dec	Frontier Airlines

Also check the deals for one-way flights from Washington to San Jose in November.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from Washington to San Jose in November from $231

Return flights