What is the cheapest month to fly from Phoenix to Boston?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Phoenix (PHX) to Boston (BOS), with fares starting from $143.

What is the lowest current fare from PHX to BOS?

The lowest currently-listed fare from Phoenix (PHX) to Boston (BOS) is $143 on 2026-08-29.

How long is the flight from Phoenix to Boston?

Direct flights from PHX to BOS cover approximately 3,692 km (2,294 miles), with an estimated flight time of 4h 21m. Operating airlines: AA, B6, DL.

Cheap flights from Phoenix to Boston

Cheapest current fares: $143 in August 2026, 3,692 km direct flight in ~4h 21m.

Last updated August 8, 2026 · By Flightmaps Editorial

Cheapest month-by-month fares

Lowest available fare per calendar month from Phoenix (PHX) to Boston (BOS). Refreshed daily.

Phoenix (PHX) → Boston (BOS)

August 2026 $143
September 2026 $150

Frequently asked questions

What is the cheapest month to fly from Phoenix to Boston?

Based on current 6-month forward fare data, August 2026 is the cheapest month to fly from Phoenix (PHX) to Boston (BOS), with fares starting from $143.
What is the lowest current fare from PHX to BOS?

The lowest currently-listed fare from Phoenix (PHX) to Boston (BOS) is $143 on 2026-08-29.
How long is the flight from Phoenix to Boston?

Direct flights from PHX to BOS cover approximately 3,692 km (2,294 miles), with an estimated flight time of 4h 21m. Operating airlines: AA, B6, DL.

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