Cheap flights from Seattle to Phoenix from $164 BFI, SEA → AZA, PHX

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $193 to $290.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 7-night return fares leaving within 3 days of 12 Jan 2027 to compare.

Every date we hold

3 fares on 3 departure dates

Which month looks cheapest?

January 2027 is the cheapest month — from $218.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 45 days, 25 Sept to 11 Nov, the cheapest one-way we saw each day was $58 to $441.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 20 Nov to compare.

Every date we hold

12 fares on 1 departure dates

Return

Fares 14 to 29 days before departure were typically 39% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 30 to 59 days before departure were typically 41% lower than 0 to 6 days before departure.

From the cheapest one-way each day between 25 Sept and 11 Nov (45 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Seattle to Phoenix?

The cheapest return found recently is $227 with Alaska Airlines, 12 Jan 2027 to 19 Jan 2027, found 2 days ago. The cheapest return we hold, of any age, is $218 with Frontier Airlines, 29 Jan 2027 to 2 Feb 2027, found 7 days ago. The cheapest return fare on each of 3 departure dates is usually $223 to $250.

How much is a one-way flight from Seattle to Phoenix?

The cheapest one-way found recently is $164 with Frontier Airlines, 20 Nov, found 8 days ago.

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

January 2027 is the cheapest month for a return, from $218, 29 Jan 2027 to 2 Feb 2027, found 7 days ago.

How far ahead should I book a flight from Seattle to Phoenix?

In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 39% lower than 0 to 6 days before departure. In 45 days of prices between 25 Sept and 11 Nov, one-way fares 30 to 59 days before departure were typically 41% lower than 0 to 6 days before departure.

Is there a direct flight from Seattle to Phoenix?

Yes, the cheapest nonstop one-way found recently is $191 with Alaska Airlines, 20 Nov, found 8 days ago.

How long is the flight from Seattle to Phoenix?

The cheapest nonstop one-way found recently, with Alaska Airlines on 20 Nov, takes 2 h 48 min from Seattle-Tacoma International Airport (SEA) to Phoenix Sky Harbor International Airport (PHX). The cheapest one-way found recently, with Frontier Airlines on 20 Nov, takes 27 h 39 min with 1 stop, including a 23 h connection.

Which airlines have the cheapest flights from Seattle to Phoenix?

Between 23 Dec and 29 Jan 2027, Frontier Airlines has the cheapest return on 2 of the 3 departure dates we hold, and Alaska Airlines on 1.