Cheapest one-way flights from San Juan to Washington in January from $93

AirHint found the following cheapest one-way flights from San Juan (SJU) to Washington (IAD) in January 2026 (see full year).

One-Way flights

16 Jan Frontier Airlines direct
30 Jan Frontier Airlines
17 Jan Frontier Airlines direct
31 Jan Frontier Airlines
28 Jan United direct
28 Jan American Airlines
27 Jan American Airlines
29 Jan United direct
30 Jan United direct
22 Jan American Airlines

Also check the deals for return flights from San Juan to Washington in January.

Powered by

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 Washington

Cheap car rent in Washington

Feel free to contact us with any feedback or request another flight research.