Find flights
Deals
When to book
FAQs

Cheap flights from Phoenix Sky Harbor Intl Airport to Seattle from £48

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SEA
11 Apr — 18 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl are usually found in January or September, booked 62 days in advance, depart on a Wednesday or Friday and return on a Tuesday

Cheap flight deals from Sky Harbor Intl to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Sky Harbor Intl to Seattle
Explore the most affordable flight options available from Sky Harbor Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 March 2026.

Fri 24/406:30
PHX
-
SEA
Nonstop3h 12m
Delta
Wed 29/420:23
SEA
-
PHX
Nonstop2h 55m
Delta
Deal found 9/3£72
Sat 4/408:45
PHX
-
SEA
Nonstop3h 15m
Delta
Tue 7/420:59
SEA
-
PHX
Nonstop2h 59m
Delta
Deal found 7/3£73
Wed 22/418:35
PHX
-
SEA
1 stop5h 20m
Southwest
Sat 25/406:40
SEA
-
PHX
Nonstop2h 45m
Southwest
Deal found 11/3£75
Tue 7/420:35
PHX
-
SEA
Nonstop3h 00m
Southwest
Tue 14/411:40
SEA
-
PHX
1 stop4h 50m
Southwest
Deal found 8/3£77
Wed 13/520:35
PHX
-
SEA
Nonstop3h 00m
Southwest
Sun 17/506:15
SEA
-
PHX
Nonstop2h 50m
Southwest
Deal found 12/3£77
Wed 15/415:45
PHX
-
SEA
1 stop8h 25m
Southwest
Wed 29/406:50
SEA
-
PHX
Nonstop2h 50m
Southwest
Deal found 9/3£80
Sat 25/408:00
PHX
-
SEA
2 stops12h 35m
Southwest
Wed 29/414:20
SEA
-
PHX
Nonstop2h 50m
Southwest
Deal found 8/3£81
Wed 15/406:05
PHX
-
SEA
1 stop7h 20m
Southwest
Sat 25/413:20
SEA
-
PHX
Nonstop2h 50m
Southwest
Deal found 11/3£85

Find flight deals from Sky Harbor Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Seattle (SEA). 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 12 March 2026.

Round-trip from

£72

One-way from

£48

Popular in

March

Cheapest in

January

Average price

£169
Delta
  • Delta
  • 24/4-29/4
  • Nonstop
  • 6h 07m total
  • Phoenix to Seattle
Search Deals
Southwest
  • Southwest
  • 28/4
  • 2 total stops
  • 7h 35m total
  • Phoenix to Seattle
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£8 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£2 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 Sky Harbor Intl to Seattle 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 12 March 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 24/4

06:30-09:42

Nonstop3h 12m

Seattle/Tacoma Intl

Wed 29/4

20:23-23:18

Nonstop2h 55m

£72

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Tue 21/4

20:35-23:35

Nonstop3h 00m

Seattle/Tacoma Intl

Tue 28/4

11:40-16:30

1 stop4h 50m

£77

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 30/4

21:55-00:55

Nonstop3h 00m

Seattle/Tacoma Intl

Sat 2/5

05:45-13:45

1 stop8h 00m

£77

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Tue 28/4

12:45-20:20

2 stops7h 35m

Seattle/Tacoma Intl

Sat 2/5

05:45-13:45

1 stop8h 00m

£89

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 29/4

06:00-09:14

Nonstop3h 14m

Seattle/Tacoma Intl

Sat 2/5

12:55-20:00

1 stop7h 05m

£100

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 22/4

06:00-09:14

Nonstop3h 14m

Seattle/Tacoma Intl

Wed 29/4

14:41-22:43

1 stop8h 02m

£110

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 8/5

15:55-19:05

Nonstop3h 10m

Seattle/Tacoma Intl

Fri 15/5

13:30-16:37

Nonstop3h 07m

£117

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 16/4

15:35-00:05

1 stop8h 30m

Seattle/Tacoma Intl

Sun 19/4

15:25-23:05

1 stop7h 40m

£124

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 15/4

15:45-00:10

1 stop8h 25m

Seattle/Tacoma Intl

Mon 20/4

12:55-20:15

1 stop7h 20m

£124

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 30/5

16:20-22:30

2 stops6h 10m

Seattle/Tacoma Intl

Wed 3/6

07:35-14:00

2 stops6h 25m

£141

Flights are sorted by cheapest return flights first.

Deals found on 7/3

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

Best time to book a flight from Sky Harbor Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Seattle

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

Use this chart to determine the optimal time to book a return flight from Sky Harbor Intl to Seattle. Price data was last updated on 6 March 2026.

The price you pay for your flight from Phoenix Sky Harbor Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £31). Flying from Phoenix Sky Harbor Intl Airport to Seattle in April is currently the most expensive (average of £70). 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 PHX to SEA?

Find hourly flight availability from Sky Harbor Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 March 2026.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 83% on flights from Phoenix Sky Harbor Intl Airport to Seattle by exploring options for tickets in the morning.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Seattle. 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 into for flights to Seattle from Phoenix Sky Harbor Intl?

    For a flight from Phoenix Sky Harbor Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 36 inbound flights from Phoenix Sky Harbor Intl per day. 0 airlines have flights to Seattle/Tacoma Intl from Phoenix Sky Harbor Intl on a regular basis.

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

    Airlines like Delta and Southwest fly from Phoenix Sky Harbor Intl Airport to Seattle in about 3h. The time it takes to get you to your destination is usually consistent. Phoenix Sky Harbor Intl Airport and Seattle are separated by a distance of 1107 mi. Generally, flights for this route are direct.

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

    Consider Envoy Air (96%), Icelandair (95%) or Air France (95%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Seattle.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Seattle 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 Phoenix Sky Harbor Intl Airport to Seattle?

    Currently, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £31). Flying from Phoenix Sky Harbor Intl Airport to Seattle in April is currently the most expensive (average of £70). 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
Tacoma
Federal Way
SeaTac

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.

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 Sky Harbor Intl to Seattle?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from Sky Harbor Intl today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from Sky Harbor Intl to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from Sky Harbor Intl to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Sky Harbor Intl today and book when prices fit your budget.

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.