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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 28/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHX
18 Apr — 25 Apr1
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 Tuesday

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 19 March 2026.

Fri 1/520:58
SEA
-
PHX
Nonstop3h 01m
Alaska Airlines
Fri 8/505:00
PHX
-
SEA
Nonstop3h 10m
Alaska Airlines
Deal found 17/3£99
Fri 1/520:58
SEA
-
PHX
Nonstop3h 01m
Alaska Airlines
Sun 3/505:00
PHX
-
SEA
Nonstop3h 10m
Alaska Airlines
Deal found 16/3£103
Tue 5/511:40
SEA
-
PHX
1 stop4h 50m
Southwest
Fri 8/521:55
PHX
-
SEA
Nonstop3h 00m
Southwest
Deal found 18/3£107
Wed 22/407:50
SEA
-
PHX
1 stop5h 20m
Southwest
Wed 29/414:40
PHX
-
SEA
Nonstop3h 05m
Southwest
Deal found 16/3£110
Sat 25/423:55
SEA
-
PHX
2 stops10h 45m
Southwest
Thu 30/417:00
PHX
-
SEA
Nonstop3h 05m
Southwest
Deal found 18/3£114
Thu 7/511:40
SEA
-
PHX
1 stop8h 45m
Southwest
Sun 10/522:55
PHX
-
SEA
Nonstop3h 00m
Southwest
Deal found 15/3£115
Wed 22/420:58
SEA
-
PHX
Nonstop3h 01m
Alaska Airlines
Wed 29/405:00
PHX
-
SEA
Nonstop3h 10m
Alaska Airlines
Deal found 15/3£118
Tue 28/411:40
SEA
-
PHX
1 stop4h 50m
Southwest
Tue 5/511:35
PHX
-
SEA
2 stops8h 45m
Southwest
Deal found 16/3£119
Wed 22/407:35
SEA
-
PHX
2 stops6h 25m
Southwest
Fri 24/417:40
PHX
-
SEA
1 stop4h 50m
Southwest
Deal found 16/3£122
Tue 28/411:40
SEA
-
PHX
1 stop4h 50m
Southwest
Mon 4/521:55
PHX
-
SEA
Nonstop3h 00m
Southwest
Deal found 16/3£122
Wed 22/407:50
SEA
-
PHX
1 stop5h 20m
Southwest
Mon 27/421:55
PHX
-
SEA
Nonstop3h 00m
Southwest
Deal found 16/3£125
Thu 7/511:40
SEA
-
PHX
1 stop8h 45m
Southwest
Mon 11/516:15
PHX
-
SEA
2 stops6h 50m
Southwest
Deal found 15/3£126

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 19 March 2026.

Round-trip from

£99

One-way from

£38

Popular in

December

Cheapest in

July

Average price

£194
Alaska Airlines
  • Alaska Airlines
  • 1/5-8/5
  • Nonstop
  • 6h 11m total
  • Seattle to Phoenix
Search Deals
Frontier
  • Frontier
  • 28/3
  • Nonstop
  • 2h 57m 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 March 2026
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 19 March 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

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 25/4

23:55-10:40

2 stops10h 45m

Phoenix Sky Harbor Intl

Thu 30/4

17:00-20:05

Nonstop3h 05m

£114

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Fri 1/5

11:40-18:00

1 stop6h 20m

Phoenix Sky Harbor Intl

Fri 8/5

15:35-00:05

1 stop8h 30m

£118

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sun 26/4

05:35-11:15

1 stop5h 40m

Phoenix Sky Harbor Intl

Fri 1/5

15:35-00:05

1 stop8h 30m

£118

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Tue 28/4

07:35-14:00

2 stops6h 25m

Phoenix Sky Harbor Intl

Fri 1/5

15:35-00:05

1 stop8h 30m

£122

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 18/4

23:55-10:40

2 stops10h 45m

Phoenix Sky Harbor Intl

Sat 25/4

08:00-20:35

2 stops12h 35m

£125

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Thu 16/4

20:23-23:18

Nonstop2h 55m

Phoenix Sky Harbor Intl

Mon 20/4

06:30-09:42

Nonstop3h 12m

£170
Fastest return journey

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Mon 30/3

11:50-14:43

Nonstop2h 53m

Phoenix Sky Harbor Intl

Wed 1/4

06:15-09:24

Nonstop3h 09m

£191

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 9/5

06:25-13:20

2 stops6h 55m

Phoenix Sky Harbor Intl

Wed 27/5

11:35-20:20

2 stops8h 45m

£197

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Fri 7/8

20:25-23:26

Nonstop3h 01m

Phoenix Sky Harbor Intl

Sat 15/8

06:00-09:13

Nonstop3h 13m

£200

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Fri 7/8

08:25-11:22

Nonstop2h 57m

Phoenix Sky Harbor Intl

Fri 7/8

17:35-20:50

Nonstop3h 15m

£200

Flights are sorted by cheapest return flights first.

Deals found on 16/3

Showing 1-10 of 22 resultsSorted by cheapest first
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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 March 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 £44). Flying from Seattle to Phoenix Sky Harbor Intl Airport in April is currently the most expensive (average of £73). 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 19 March 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 32 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 10h 45m. Southwest provides one of the quickest options available for as low as £114. Seattle and Phoenix Sky Harbor Intl Airport are separated by a distance of 1107 mi.

  • 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 KLM (91%), Envoy Air (90%) and American Airlines (89%).

  • 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 £44). Flying from Seattle to Phoenix Sky Harbor Intl Airport in April is currently the most expensive (average of £73). 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

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Alternative routes for Seattle to Sky Harbor Intl

See prices for flight routes from nearby airports that may be better suited for you.
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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