Cheap flights from Seattle to Phoenix

One-way fares from $98 · SEA → PHX · prices found by travellers in the last 48 hours

Compare all dates Phoenix → Seattle
Cheapest fare
$98

Frontier Airlines · Sat, Dec 19

Cheapest month
December

from $98

Direct flights
Not recently

Usually 1+ stop

Quickest trip
3h 53m

1,790 km

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Cheapest month to fly from Seattle to Phoenix

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. November 2026 $107
  2. December 2026 Cheapest $98

Cheapest dates in December 2026

The lowest fares we've seen for each day, cheapest first.

Frontier Airlines
Depart19:47 Sat, Dec 19SEA → PHX 3h 53m · 1 stop
$98one way, per person
View deal
Alaska Airlines
Depart11:36 Sat, Dec 5SEA → PHX 4h 28m · 1 stop
$99one way, per person
View deal
See every date in December 2026 →

Plan the rest of your trip to Phoenix

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in PhoenixCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in PhoenixTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in PhoenixPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in PhoenixCompare rental cars from major brands on EconomyBookings Compare cars →

About flights from Seattle to Phoenix

Seattle (SEA) and Phoenix (PHX) are about 1,790 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 3h 53m. Over the next few months, one-way fares start from $98, and December 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Seattle to Phoenix?

The cheapest one-way fare we've seen recently is $98 with Frontier Airlines, departing Saturday, December 19, 2026. Over the coming months, the lowest fare in each month ranges from $98 to $107.

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

December 2026 currently has the lowest fares, from $98 one way.

Are there direct flights from Seattle to Phoenix?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Seattle to Phoenix?

The quickest journey we've seen takes about 3h 53m. Seattle and Phoenix are around 1,790 km apart.

Which airlines fly from Seattle to Phoenix?

Recent fares on this route were with Frontier Airlines and Alaska Airlines.

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