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Cheap flights from Seattle to Phoenix Sky Harbor Intl Airport from £38

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHX
18 Mar — 25 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl are usually found in July or August, booked 87 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap flight deals from Seattle to Sky Harbor Intl

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Sky Harbor Intl
Explore the most affordable flight options available from Seattle to Sky Harbor Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 February 2026.

Mon 9/317:06
SEA
-
PHX
Nonstop2h 54m
Alaska Airlines
Wed 11/306:00
PHX
-
SEA
Nonstop3h 16m
Alaska Airlines
Deal found 14/2£75
Tue 3/319:03
SEA
-
PHX
Nonstop2h 52m
Alaska Airlines
Wed 11/305:00
PHX
-
SEA
Nonstop3h 14m
Alaska Airlines
Deal found 14/2£89
Sat 25/407:50
SEA
-
PHX
Nonstop3h 00m
Delta
Sat 2/517:40
PHX
-
SEA
Nonstop3h 10m
Delta
Deal found 15/2£90
Mon 13/416:53
SEA
-
PHX
Nonstop2h 52m
Alaska Airlines
Mon 20/418:17
PHX
-
SEA
Nonstop3h 14m
Alaska Airlines
Deal found 14/2£99
Wed 22/418:58
SEA
-
PHX
Nonstop2h 53m
Delta
Sat 25/408:33
PHX
-
SEA
Nonstop3h 16m
Delta
Deal found 14/2£102
Mon 2/306:00
SEA
-
PHX
Nonstop2h 51m
Alaska Airlines
Wed 4/306:00
PHX
-
SEA
Nonstop3h 14m
Alaska Airlines
Deal found 14/2£103
Sat 25/420:23
SEA
-
PHX
Nonstop2h 55m
Delta
Wed 6/515:50
PHX
-
SEA
Nonstop3h 15m
Delta
Deal found 15/2£110
Mon 20/416:53
SEA
-
PHX
Nonstop2h 52m
Alaska Airlines
Mon 4/506:00
PHX
-
SEA
Nonstop3h 14m
Alaska Airlines
Deal found 15/2£112
Wed 25/206:00
SEA
-
PHX
Nonstop2h 51m
Alaska Airlines
Wed 4/307:00
PHX
-
SEA
Nonstop3h 19m
Alaska Airlines
Deal found 15/2£113
Thu 13/820:25
SEA
-
PHX
Nonstop3h 01m
Delta
Sat 15/806:00
PHX
-
SEA
Nonstop3h 13m
Delta
Deal found 14/2£113
Tue 3/306:00
SEA
-
PHX
Nonstop2h 51m
Alaska Airlines
Sat 7/307:00
PHX
-
SEA
Nonstop3h 19m
Alaska Airlines
Deal found 14/2£116
Sat 25/411:45
SEA
-
PHX
Nonstop2h 58m
Delta
Sun 3/506:30
PHX
-
SEA
Nonstop3h 12m
Delta
Deal found 15/2£117

Find flight deals from Seattle to Sky Harbor Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Sky Harbor Intl (PHX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 February 2026.

Round-trip from

£75

One-way from

£38

Popular in

December

Cheapest in

July

Average price

£169

Good one-way deal

£153 or less
Alaska Airlines
  • Alaska Airlines
  • 9/3-11/3
  • Nonstop
  • 6h 10m total
  • Seattle to Phoenix
Search Deals
Delta
  • Delta
  • 18/4
  • Nonstop
  • 2h 53m total
  • Seattle to Phoenix
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£11 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seattle to Sky Harbor Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 February 2026.
Use the filters below to find and compare flights from Seattle to Phoenix Sky Harbor Intl Airport that are best for you.

Fly from

Seattle

Fly to

Sky Harbor Intl

Route

Depart

Return

Price

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 6/5

11:48-15:00

Nonstop3h 12m

Phoenix Sky Harbor Intl

Wed 6/5

17:00-20:13

Nonstop3h 13m

£126

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 1/4

20:59-23:58

Nonstop2h 59m

Phoenix Sky Harbor Intl

Tue 7/4

12:55-16:06

Nonstop3h 11m

£130

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 6/5

09:20-12:10

Nonstop2h 50m

Phoenix Sky Harbor Intl

Sun 17/5

22:55-01:55

Nonstop3h 00m

£137

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Mon 27/4

11:45-14:43

Nonstop2h 58m

Phoenix Sky Harbor Intl

Wed 29/4

15:50-19:05

Nonstop3h 15m

£137

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 1/4

20:59-23:58

Nonstop2h 59m

Phoenix Sky Harbor Intl

Sun 5/4

12:55-16:06

Nonstop3h 11m

£137

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 29/4

18:55-21:48

Nonstop2h 53m

Phoenix Sky Harbor Intl

Sun 3/5

06:15-09:31

Nonstop3h 16m

£137

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Mon 13/4

20:59-23:52

Nonstop2h 53m

Phoenix Sky Harbor Intl

Mon 20/4

17:02-20:17

Nonstop3h 15m

£144

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Mon 16/3

20:59-23:58

Nonstop2h 59m

Phoenix Sky Harbor Intl

Thu 19/3

15:45-18:54

Nonstop3h 09m

£144

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Thu 7/5

19:56-23:01

Nonstop3h 05m

Phoenix Sky Harbor Intl

Sun 10/5

06:00-09:13

Nonstop3h 13m

£144

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sun 29/3

18:45-21:31

Nonstop2h 46m

Phoenix Sky Harbor Intl

Thu 9/4

06:15-09:24

Nonstop3h 09m

£144

Flights are sorted by cheapest return flights first.

Deals found on 14/2

Showing 1-10 of 23 results
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Best time to book a flight from Seattle to Sky Harbor Intl

Have a flexible travel schedule? Discover the best time to fly to Sky Harbor Intl from Seattle with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Phoenix Sky Harbor Intl Airport

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

Use this chart to determine the optimal time to book a return flight from Seattle to Sky Harbor Intl. Price data was last updated on 13 February 2026.

To ensure you get the cheapest price possible for a flight from Seattle to Phoenix Sky Harbor Intl Airport, you should look to book at least 45 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Phoenix Sky Harbor Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Phoenix Sky Harbor Intl Airport (average of £43). Flying from Seattle to Phoenix Sky Harbor Intl Airport in December is currently the most expensive (average of £68). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to PHX?

Find hourly flight availability from Seattle to Sky Harbor Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 February 2026.

When flying from Seattle to Phoenix Sky Harbor Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 46% versus a flight in the evening.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Sky Harbor Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Phoenix Sky Harbor Intl?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Phoenix Sky Harbor Intl from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Phoenix Sky Harbor Intl should be relatively easy as there are 48 daily outbound flights to Phoenix Sky Harbor Intl from 0 different airlines.

  • How long is the flight from Seattle to Phoenix Sky Harbor Intl Airport?

    A quick flight from Seattle to Phoenix Sky Harbor Intl Airport can take about 2h 52m. Alaska Airlines provides one of the quickest options available for as low as £110. Seattle and Phoenix Sky Harbor Intl Airport are separated by a distance of 1107 mi. Most flights are nonstop.

  • What are the most reliable airlines from Seattle to Phoenix Sky Harbor Intl Airport?

    The top 3 most reliable airlines when flying from Seattle to Phoenix Sky Harbor Intl Airport are American Airlines (87%), Envoy Air (86%) and SkyWest Airlines (86%).

  • What are the cheapest flights from Seattle to Phoenix Sky Harbor Intl Airport?

    Looking for the cheapest flight from Seattle to Phoenix Sky Harbor Intl Airport? While on average our users pay £153, our data indicates the cheapest price to be £153. The most popular route (Seattle/Tacoma Intl - Phoenix Sky Harbor Intl), is priced around £157.

  • Can I find deals for flights from Seattle to Sky Harbor Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to Sky Harbor Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Sky Harbor Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Sky Harbor Intl.

  • Can I find deals for business class flights from Seattle to Sky Harbor Intl?

    Yes. Cheapflights offers flight deals from Seattle to Sky Harbor Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Phoenix Sky Harbor Intl Airport (average of £43). Flying from Seattle to Phoenix Sky Harbor Intl Airport in December is currently the most expensive (average of £68). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Phoenix Sky Harbor Intl Airport?

Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locations
Glendale
Chandler

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Sky Harbor Intl

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Portland to Sky Harbor Intl flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Sky Harbor Intl?

When you search for this flight from Seattle to Sky Harbor Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Sky Harbor Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to Sky Harbor Intl for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Seattle to Sky Harbor Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Sky Harbor Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Sky Harbor Intl become cheaper?

Of course! You can now track prices for flights from Seattle to Sky Harbor Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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