Seattle to Phoenix in August 2026

Dated one-way fares from Seattle to Phoenix in August 2026. Use the calendar to see which days are cheaper.

Lowest this month $157

Highest this month $313

Sample fare $124

Airports SEA–PHX

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August 2026 price calendar

From $157 · up to $313

Mon

Tue

Wed

Thu

Fri

Sat

Sun

23 $313 24 $171 25 $157 26 $157 27 $167 28 $169 29 $169 30 $171 31 $169

Phoenix PHX

$157

Aug 25, 2:37pm · 9h 2m · 1 stop

SEA → PHX · Frontier Airlines

Phoenix PHX

$157

Aug 26, 2:37pm · 17h 3m · 1 stop

SEA → PHX · Frontier Airlines

Phoenix PHX

$167

Aug 27, 2:37pm · 6h 51m · 1 stop

SEA → PHX · Frontier Airlines

Phoenix PHX

$169

Aug 31, 1:35pm · 7h 53m · 1 stop

SEA → PHX · Frontier Airlines

This page is only August 2026 on the Seattle to Phoenix route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book Seattle to Phoenix in August 2026.