Cheap flights from Boston to Phoenix
Cheapest current fares: $155 in October 2026, 3,692 km direct flight in ~4h 21m.
Cheapest month-by-month fares
Lowest available fare per calendar month from Boston (BOS) to Phoenix (PHX). Refreshed daily.
Boston (BOS) → Phoenix (PHX)
- October 2026 $155
- May 2026 $166
- August 2026 $173
- June 2026 $197
Frequently asked questions
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What is the cheapest month to fly from Boston to Phoenix?
Based on current 6-month forward fare data, October 2026 is the cheapest month to fly from Boston (BOS) to Phoenix (PHX), with fares starting from $155.
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What is the lowest current fare from BOS to PHX?
The lowest currently-listed fare from Boston (BOS) to Phoenix (PHX) is $155 on 2026-10-20.
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How long is the flight from Boston to Phoenix?
Direct flights from BOS to PHX cover approximately 3,692 km (2,294 miles), with an estimated flight time of 4h 21m. Operating airlines: AA, B6, DL.
Related guides for this route
Sibling pages — full route detail, airport overviews, visa context, per-airline routes.