Cheap flights from San Diego to Boston
Cheapest current fares: $180 in June 2026, 4,155 km direct flight in ~4h 53m.
Cheapest month-by-month fares
Lowest available fare per calendar month from San Diego (SAN) to Boston (BOS). Refreshed daily.
San Diego (SAN) → Boston (BOS)
- June 2026 $180
Frequently asked questions
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What is the cheapest month to fly from San Diego to Boston?
Based on current 6-month forward fare data, June 2026 is the cheapest month to fly from San Diego (SAN) to Boston (BOS), with fares starting from $180.
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What is the lowest current fare from SAN to BOS?
The lowest currently-listed fare from San Diego (SAN) to Boston (BOS) is $180 on 2026-06-02.
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How long is the flight from San Diego to Boston?
Direct flights from SAN to BOS cover approximately 4,155 km (2,582 miles), with an estimated flight time of 4h 53m. Operating airlines: AS, B6, DL, WN.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.