Cheap flights from San Diego to Dulles
Cheapest current fares: $122 in September 2026, 3,620 km direct flight in ~4h 16m.
Cheapest month-by-month fares
Lowest available fare per calendar month from San Diego (SAN) to Dulles (IAD). Refreshed daily.
San Diego (SAN) → Dulles (IAD)
- September 2026 $122
- August 2026 $230
Frequently asked questions
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What is the cheapest month to fly from San Diego to Dulles?
Based on current 6-month forward fare data, September 2026 is the cheapest month to fly from San Diego (SAN) to Dulles (IAD), with fares starting from $122.
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What is the lowest current fare from SAN to IAD?
The lowest currently-listed fare from San Diego (SAN) to Dulles (IAD) is $122 on 2026-09-17.
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How long is the flight from San Diego to Dulles?
Direct flights from SAN to IAD 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.