SEA - PHX

£37 Find Cheap Flights from Seattle to Phoenix

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Phoenix departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Phoenix Sky Harbor Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Phoenix, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Phoenix, as well as popular online travel agencies
Travellers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
£72
Overall average: £140
Delta
Thu 8/1Thu 15/1
SEA - PHX • Direct
Cheapest direct flights
£72
Typical prices: £78-£212
Delta
Thu 8/1Sun 11/1
SEA - PHX • Direct
Our travellers' advice
AI-powered summary based on content written by KAYAK users. AI can make mistakes.
Alaska Airlines offers underground tram connections.
Frontier's seat space is notably smaller than others.
User tips
User tips
User tips
User tips
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 41% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
August
Cheapest • 20% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Phoenix!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Phoenix (SEA-PHX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Seattle to Phoenix that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Seattle to Phoenix

Thu, 8 Jan - Thu, 15 Jan
Delta Logo
11:50 - 15:45
SEA
-
PHX
2h 55mdirect
Delta Logo
12:05 - 14:21
PHX
-
SEA
3h 16mdirect
£72Delta
Fri, 6 Feb - Tue, 10 Feb
Southwest Logo
05:00 - 08:45
SEA
-
PHX
2h 45mdirect
Southwest Logo
08:25 - 12:20
PHX
-
SEA
4h 55m1 stop
£80Southwest
Tue, 13 Jan - Tue, 20 Jan
Southwest Logo
12:45 - 22:20
SEA
-
PHX
8h 35m1 stop
Southwest Logo
20:55 - 23:05
PHX
-
SEA
3h 10mdirect
£84Southwest
Sat, 10 Jan - Sat, 17 Jan
Southwest Logo
13:15 - 22:05
SEA
-
PHX
7h 50m1 stop
Southwest Logo
08:55 - 13:05
PHX
-
SEA
5h 10m1 stop
£87Southwest
Thu, 22 Jan - Mon, 26 Jan
Delta Logo
19:49 - 23:48
SEA
-
PHX
2h 59mdirect
Delta Logo
19:59 - 22:17
PHX
-
SEA
3h 18mdirect
£87Delta
Thu, 22 Jan - Tue, 27 Jan
Southwest Logo
12:45 - 19:55
SEA
-
PHX
6h 10m2 stops
Southwest Logo
16:25 - 22:35
PHX
-
SEA
7h 10m1 stop
£91Southwest
Wed, 14 Jan - Tue, 20 Jan
Southwest Logo
05:15 - 09:00
SEA
-
PHX
2h 45mdirect
Southwest Logo
20:55 - 23:05
PHX
-
SEA
3h 10mdirect
£92Southwest
Wed, 7 Jan - Wed, 14 Jan
Southwest Logo
05:15 - 09:00
SEA
-
PHX
2h 45mdirect
Southwest Logo
16:25 - 22:35
PHX
-
SEA
7h 10m1 stop
£99Southwest
Sat, 17 Jan - Sat, 17 Jan
Alaska Airlines Logo
12:15 - 16:12
SEA
-
PHX
2h 57mdirect
Alaska Airlines Logo
17:12 - 19:30
PHX
-
SEA
3h 18mdirect
£102Alaska Airlines
Thu, 5 Mar - Sun, 8 Mar
Delta Logo
19:55 - 23:50
SEA
-
PHX
2h 55mdirect
Delta Logo
06:00 - 09:07
PHX
-
SEA
3h 07mdirect
£102Delta
Booking Insights

KAYAK's insights & trends for Seattle to Phoenix flights

Get data-powered insights and trends into flights from Seattle to Phoenix to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Phoenix Sky Harbor Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Phoenix Sky Harbor Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Phoenix Sky Harbor Intl Airport is August, where tickets cost £128 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is £215 and £185 respectively.

How far in advance should I book a flight from Seattle to Phoenix Sky Harbor Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Phoenix Sky Harbor Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Phoenix Sky Harbor Intl Airport, you should book around 4 weeks before departure, which saves you about 41% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Find deals

Good to know - Cheap tickets from Seattle to Phoenix

Low seasonSeptember
Cheapest flight£37
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (14% more expensive on average)
Flight from Seattle to Phoenix

When to book flights from Seattle to Phoenix

Are your dates flexible? Find out the best times to travel from Seattle to Phoenix based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Seattle to Phoenix: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Seattle to Phoenix 
Learn how KAYAK collects reviews and tips from users.
Verified travelerFlew with Frontier
SEA
-
PHX
Jun 2025
Wish I had known the seats were so uncomfortable. Wish I had known checked bags and carry on bags were 75 each. Wish I didn't have to wait so long in line with only one clerk working. Wish I had known we were going to have to take a bus from the gate to our airplane. Wish I had known the seat space is smaller than any other airline I have flown. I do not recommend Frontier.
Verified travelerFlew with Alaska Airlines
SEA
-
PHX
Jul 2024
Seattle is a busy gate. Find your gate first as connections may involve underground tram.

FAQs for booking Seattle to Phoenix flights

  • What is the cheapest flight from Seattle to Phoenix Sky Harbor Intl Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Phoenix Sky Harbor Intl Airport was £37 for a one-way ticket and £72 for a return.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Phoenix?

    Alaska Airlines, Delta, American Airlines, Hawaiian Airlines, and Aeromexico offer inflight Wi-Fi service on the Seattle to Phoenix flight route.

  • Which aircraft models fly most regularly from Seattle to Phoenix?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Seattle to Phoenix flight route.

  • On which days can I fly direct from Seattle to Phoenix?

    There are direct flights from Seattle to Phoenix on a daily basis.

  • How does KAYAK find such low prices on flights from Seattle to Phoenix?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Phoenix.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Phoenix?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Phoenix from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Phoenix?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Phoenix with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Phoenix?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Phoenix from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Phoenix Sky Harbor Intl Airport

  • Looking for a cheap flight from Phoenix to Seattle? 25% of our users found flights on this route for £44 or less one-way.

Prefer to fly direct from Seattle to Phoenix?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Phoenix Sky Harbor Intl Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Phoenix Sky Harbor Intl

Monday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

Tuesday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Wednesday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

Friday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

Saturday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

Sunday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

See more direct flights

Direct returns

Phoenix Sky Harbor Intl to Seattle/Tacoma Intl

Monday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

Tuesday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Wednesday

Alaska Airlines, American Airlines, Delta, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

Friday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

Saturday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

Sunday

Alaska Airlines, American Airlines, Delta, +2 more

Alaska Airlines, American Airlines, +3 more

See more direct flights

Everything you need to know for your flight from Seattle to Phoenix

Information on your arrival and departure airports

Seattle (SEA)
Sky Harbor Intl (PHX)