Cheap flights from San Diego to Washington
Cheapest current fares: $171 in August 2026, 3,655 km direct flight in ~4h 18m.
Cheapest month-by-month fares
Lowest available fare per calendar month from San Diego (SAN) to Washington (DCA). Refreshed daily.
San Diego (SAN) → Washington (DCA)
- August 2026 $171
- June 2026 $177
- May 2026 $219
Frequently asked questions
-
What is the cheapest month to fly from San Diego to Washington?
Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from San Diego (SAN) to Washington (DCA), with fares starting from $171.
-
What is the lowest current fare from SAN to DCA?
The lowest currently-listed fare from San Diego (SAN) to Washington (DCA) is $171 on 2026-08-16.
-
How long is the flight from San Diego to Washington?
Direct flights from SAN to DCA cover approximately 3,655 km (2,271 miles), with an estimated flight time of 4h 18m. Operating airlines: AS.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.