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Cheap flights from Seattle to Phoenix Sky Harbor Intl Airport from £51

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHX
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl are usually found in January or August, booked 86 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap 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 18 September 2025.

Round-trip from

£97

One-way from

£51

Popular in

December

Cheapest in

January

Average price

£127
Delta
  • Delta
  • 18/10-21/10
  • Nonstop
  • 6h 02m total
  • Seattle to Phoenix
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Delta
  • Delta
  • 14/10
  • Nonstop
  • 2h 51m total
  • Seattle to Phoenix
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Highest demand for flights based on searches. 9% potential increase in price (£12 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Find flight deals from Seattle to Sky Harbor Intl

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 18 September 2025.

Sat 18/1019:35SEA - PHX
Nonstop2h 51mDelta
Tue 21/1015:40PHX - SEA
Nonstop3h 11mDelta
Deal found 17/9£97
Tue 14/1019:35SEA - PHX
Nonstop2h 51mDelta
Tue 21/1011:01PHX - SEA
Nonstop3h 19mDelta
Deal found 17/9£100
Wed 22/1017:00SEA - PHX
1 stop5h 20mSouthwest
Sun 26/1022:10PHX - SEA
Nonstop3h 00mSouthwest
Deal found 16/9£105
Tue 14/1016:40SEA - PHX
1 stop4h 35mSouthwest
Fri 17/1021:50PHX - SEA
Nonstop3h 00mSouthwest
Deal found 16/9£107
Fri 12/1218:45SEA - PHX
1 stop4h 20mSouthwest
Sun 14/1206:00PHX - SEA
1 stop5h 20mSouthwest
Deal found 17/9£111
Tue 14/1016:40SEA - PHX
1 stop4h 35mSouthwest
Tue 21/1006:20PHX - SEA
1 stop5h 25mSouthwest
Deal found 16/9£114
Wed 19/1119:50SEA - PHX
Nonstop2h 57mDelta
Sat 22/1119:59PHX - SEA
Nonstop3h 20mDelta
Deal found 16/9£114
Wed 19/1105:15SEA - PHX
Nonstop2h 45mSouthwest
Sun 23/1121:50PHX - SEA
Nonstop3h 15mSouthwest
Deal found 16/9£117
Sat 13/1207:10SEA - PHX
Nonstop2h 57mDelta
Sat 20/1220:08PHX - SEA
Nonstop3h 17mDelta
Deal found 17/9£121
Wed 19/1115:05SEA - PHX
1 stop4h 25mSouthwest
Mon 24/1121:50PHX - SEA
Nonstop3h 15mSouthwest
Deal found 17/9£122
Wed 19/1106:15SEA - PHX
2 stops7h 25mSouthwest
Wed 19/1120:45PHX - SEA
Nonstop3h 10mSouthwest
Deal found 16/9£125

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 18 September 2025.
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

Thu 4/12

19:50-23:51

Nonstop3h 01m

Phoenix Sky Harbor Intl

Sun 7/12

08:00-10:20

Nonstop3h 20m

£97

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Mon 17/11

07:10-11:07

Nonstop2h 57m

Phoenix Sky Harbor Intl

Thu 20/11

08:00-10:20

Nonstop3h 20m

£117

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 12/11

19:59-23:51

Nonstop2h 52m

Phoenix Sky Harbor Intl

Wed 19/11

09:06-11:25

Nonstop3h 19m

£131

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Thu 27/11

13:59-17:52

Nonstop2h 53m

Phoenix Sky Harbor Intl

Tue 2/12

06:00-08:14

Nonstop3h 14m

£131

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 8/11

19:30-23:21

Nonstop2h 51m

Phoenix Sky Harbor Intl

Wed 12/11

14:45-17:00

Nonstop3h 15m

£131

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 18/10

19:35-22:26

Nonstop2h 51m

Phoenix Sky Harbor Intl

Wed 22/10

07:05-10:20

Nonstop3h 15m

£131

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 1/11

15:20-18:08

Nonstop2h 48m

Phoenix Sky Harbor Intl

Tue 11/11

19:56-22:16

Nonstop3h 20m

£131

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 5/11

19:30-23:21

Nonstop2h 51m

Phoenix Sky Harbor Intl

Tue 11/11

19:56-22:16

Nonstop3h 20m

£131

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Tue 11/11

19:59-23:51

Nonstop2h 52m

Phoenix Sky Harbor Intl

Thu 20/11

12:58-15:10

Nonstop3h 12m

£134

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sun 16/11

07:10-11:07

Nonstop2h 57m

Phoenix Sky Harbor Intl

Wed 19/11

19:56-22:16

Nonstop3h 20m

£134

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 22 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 12 September 2025.

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 86 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 £729). Flying from Seattle to Phoenix Sky Harbor Intl Airport in July is currently the most expensive (average of £1,041). 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 18 September 2025.

When flying from Seattle to Phoenix Sky Harbor Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 33 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. Delta provides one of the quickest options available for as low as £131. Seattle and Phoenix Sky Harbor Intl Airport are separated by a distance of 1107 mi. Most flights are nonstop.

  • What are the cheapest airlines to fly from Seattle to Phoenix Sky Harbor Intl Airport one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as £51. However, be on the lookout for offers from Southwest and Hawaiian Airlines, as they are both options that can get you from Seattle to Phoenix Sky Harbor Intl Airport for a low price.

  • 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 (100%), LATAM Airlines (100%) and Aeromexico (98%).

  • 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 £729). Flying from Seattle to Phoenix Sky Harbor Intl Airport in July is currently the most expensive (average of £1,041). 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
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Alternative routes for Seattle to Sky Harbor Intl

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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?

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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.

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