Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seattle to Phoenix Sky Harbor Intl Airport from £53

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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHX
16 Jul — 23 Jul1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl are usually found in September or August, booked 78 days in advance, depart on a Tuesday or Monday and return on a Thursday

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 11 July 2025.

Round-trip from

£77

One-way from

£53

Popular in

December

Cheapest in

September

Average price

£135
Southwest
  • Southwest
  • 6/9-9/9
  • 1 total stop
  • 8h 55m total
  • Seattle to Phoenix
Search Deals
Southwest
  • Southwest
  • 6/11
  • Nonstop
  • 2h 45m 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 July 2025
Search Deals

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 11 July 2025.

Sat 6/907:35SEA - PHX
Nonstop3h 00mSouthwest
Tue 9/917:15PHX - SEA
1 stop5h 55mSouthwest
Deal found 9/7£77
Fri 29/820:55SEA - PHX
Nonstop3h 00mAlaska Airlines
Wed 3/913:54PHX - SEA
Nonstop3h 04mAlaska Airlines
Deal found 8/7£79
Fri 15/811:40SEA - PHX
Nonstop3h 11mDelta
Wed 20/813:40PHX - SEA
Nonstop3h 01mDelta
Deal found 9/7£79
Wed 24/909:53SEA - PHX
1 stop5h 37mHawaiian Airlines
Wed 24/918:15PHX - SEA
Nonstop3h 08mHawaiian Airlines
Deal found 10/7£103

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 11 July 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

Sat 6/9

07:35-10:35

Nonstop3h 00m

Phoenix Sky Harbor Intl

Tue 9/9

17:15-23:10

1 stop5h 55m

£77

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Fri 29/8

20:55-23:55

Nonstop3h 00m

Phoenix Sky Harbor Intl

Wed 3/9

13:54-16:58

Nonstop3h 04m

£79

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Fri 15/8

11:40-14:51

Nonstop3h 11m

Phoenix Sky Harbor Intl

Wed 20/8

13:40-16:41

Nonstop3h 01m

£79

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 24/9

09:53-15:30

1 stop5h 37m

Phoenix Sky Harbor Intl

Wed 24/9

18:15-21:23

Nonstop3h 08m

£103

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Thu 6/11

05:15-09:00

Nonstop2h 45m

£53

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 27/8

09:50-12:54

Nonstop3h 04m

£59

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sun 3/8

07:20-10:16

Nonstop2h 56m

£62

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Thu 6/11

12:41-21:44

1 stop8h 03m

£76

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Fri 29/8

12:25-19:17

1 stop6h 52m

£79

Flights are sorted by cheapest return flights first.

Deals found on 8/7

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 27 June 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 78 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 11 July 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.

Weekly flight availability from Seattle to Phoenix Sky Harbor Intl Airport

Explore weekly flight availability from Seattle to Sky Harbor Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 11 July 2025.

The most flights from SEA to PHX are scheduled on a Thursday (56 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).

Reviews of airlines servicing Sky Harbor Intl

Get insights into the airlines that provide service to Sky Harbor Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sky Harbor Intl. Reviews last updated 11 July 2025.
Read through reviews of airlines operating flights from Seattle to Phoenix Sky Harbor Intl Airport, such as Alaska Airlines, Southwest, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very Good
4,249 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very Good
7,951 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.8
Good
2,562 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,848 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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 41 daily outbound flights to Phoenix Sky Harbor Intl from 0 different airlines.

  • What are the cheapest airlines flying from Seattle to Phoenix Sky Harbor Intl Airport round-trip?

    Our cheapest airline available from Seattle to Phoenix Sky Harbor Intl Airport is Southwest. Our recent data shows that you can find tickets from as low as £77 on this airline. Additional options worth looking into are Alaska Airlines and Delta, starting at £79 and £79 round-trip. Southwest is priced at 49% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as £53. However, be on the lookout for offers from Alaska Airlines and Delta, 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 Air France (93%), WestJet (89%) and Virgin Atlantic (88%).

  • 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Chandler

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights