Cheap flights from Dulles to San Diego
Cheapest current fares: $242 in August 2026, 3,620 km direct flight in ~4h 16m.
Cheapest month-by-month fares
Lowest available fare per calendar month from Dulles (IAD) to San Diego (SAN). Refreshed daily.
Dulles (IAD) → San Diego (SAN)
- August 2026 $242
Frequently asked questions
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What is the cheapest month to fly from Dulles to San Diego?
Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Dulles (IAD) to San Diego (SAN), with fares starting from $242.
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What is the lowest current fare from IAD to SAN?
The lowest currently-listed fare from Dulles (IAD) to San Diego (SAN) is $242 on 2026-08-12.
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How long is the flight from Dulles to San Diego?
Direct flights from IAD to SAN cover approximately 3,620 km (2,249 miles), with an estimated flight time of 4h 16m. Operating airlines: AS, UA.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.