Cheapest one-way flights from Seattle to Phoenix in March from $29

Best time to book flights for Seattle (SEA) to Phoenix (PHX) flights at AirHint

AirHint found the following cheapest one-way flights from Seattle (SEA) to Phoenix (PHX) in March 2025 (see full year).

One-Way flights

04 Mar Frontier Airlines direct
11 Mar Frontier Airlines direct
15 Mar Frontier Airlines direct
10 Mar Frontier Airlines direct
07 Mar Frontier Airlines direct
08 Mar Frontier Airlines direct
27 Mar Frontier Airlines direct
25 Mar Frontier Airlines direct
20 Mar Frontier Airlines direct
01 Mar Frontier Airlines direct

Also check the deals for return flights from Seattle to Phoenix in March.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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