Cheap flights from Washington to San Diego
Cheapest current fares: $228 in August 2026, 3,655 km direct flight in ~4h 18m.
Cheapest month-by-month fares
Lowest available fare per calendar month from Washington (DCA) to San Diego (SAN). Refreshed daily.
Washington (DCA) → San Diego (SAN)
- August 2026 $228
Frequently asked questions
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What is the cheapest month to fly from Washington to San Diego?
Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Washington (DCA) to San Diego (SAN), with fares starting from $228.
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What is the lowest current fare from DCA to SAN?
The lowest currently-listed fare from Washington (DCA) to San Diego (SAN) is $228 on 2026-08-15.
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How long is the flight from Washington to San Diego?
Direct flights from DCA to SAN 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.