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Cheap Flights from Phoenix Sky Harbor (PHX) to Seattle (SEAA)

Compare Phoenix Sky Harbor to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Phoenix Sky Harbor Airport to Seattle

Looking for a cheap last-minute deal or the best return flight from Phoenix Sky Harbor Airport to Seattle? If you want to travel next month, return fares start from £69. Find the lowest prices on one-way and return tickets right here.
Seattle.£69 per passenger.Departing Fri, 3 Apr, returning Mon, 13 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Fri, 3 Apr, arriving in Seattle / Tacoma International.Inbound direct flight with Frontier Airlines departs from Seattle / Tacoma International on Mon, 13 Apr, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £69, select.
Seattle.£98 per passenger.Departing Wed, 13 May, returning Wed, 13 May.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Wed, 13 May, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 13 May, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £98, select.
Seattle.£102 per passenger.Departing Thu, 30 Apr, returning Sun, 3 May.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Thu, 30 Apr, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 3 May, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £102, select.
Seattle.£102 per passenger.Departing Mon, 15 Jun, returning Wed, 17 Jun.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Mon, 15 Jun, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 17 Jun, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £102, select.
Seattle.£151 per passenger.Departing Wed, 27 May, returning Tue, 2 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Wed, 27 May, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 2 Jun, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £151, select.
Seattle.£153 per passenger.Departing Wed, 25 Mar, returning Thu, 9 Apr.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Wed, 25 Mar, arriving in Seattle / Tacoma International.Inbound direct flight with Frontier Airlines departs from Seattle / Tacoma International on Thu, 9 Apr, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £153, select.
Seattle.£153 per passenger.Departing Wed, 25 Mar, returning Fri, 27 Mar.Return flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Wed, 25 Mar, arriving in Seattle / Tacoma International.Inbound direct flight with Frontier Airlines departs from Seattle / Tacoma International on Fri, 27 Mar, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £153, select.
Seattle.£158 per passenger.Departing Fri, 3 Apr, returning Sat, 2 Jan.Return flight with Frontier Airlines and Alaska Airlines.Outbound direct flight with Frontier Airlines departs from Phoenix Sky Harbor on Fri, 3 Apr, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Sat, 2 Jan, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £158, select.
Seattle.£187 per passenger.Departing Sun, 12 Jul, returning Tue, 14 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Sun, 12 Jul, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 14 Jul, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £187, select.
Seattle.£189 per passenger.Departing Wed, 20 May, returning Mon, 1 Jun.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Wed, 20 May, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 1 Jun, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £189, select.
Seattle.£199 per passenger.Departing Sat, 29 Aug, returning Sun, 6 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Sat, 29 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 6 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £199, select.
Seattle.£199 per passenger.Departing Thu, 6 Aug, returning Fri, 7 Aug.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Thu, 6 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 7 Aug, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £199, select.
Seattle.£199 per passenger.Departing Fri, 3 Jul, returning Wed, 8 Jul.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Fri, 3 Jul, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 8 Jul, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £199, select.
Seattle.£199 per passenger.Departing Fri, 4 Sep, returning Mon, 7 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Fri, 4 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 7 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £199, select.
Seattle.£200 per passenger.Departing Sat, 27 Jun, returning Sun, 12 Jul.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Sat, 27 Jun, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 12 Jul, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £200, select.
Seattle.£200 per passenger.Departing Wed, 13 Jan, returning Sun, 24 Jan.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Wed, 13 Jan, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 24 Jan, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From £200, select.

Find the cheapest month to fly from Phoenix Sky Harbor to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Phoenix Sky Harbor to Seattle flights are currently cheapest in April.
Mar
from £153
Apr
from £69
May
from £98
Jun
from £102
Jul
from £187
Aug
from £199
Sep
from £199
Oct
Find prices
Nov
from £200
Dec
from £200
Jan
from £200
Feb
Find prices

Direct flights from Phoenix Sky Harbor to Seattle

Alternative Phoenix Sky Harbor to Seattle routes

Looking for the cheapest, fastest or easiest route from Phoenix Sky Harbor to Seattle? You could fly into the following airports instead.

Seattle Lake Union SPB

1 mile from central Seattle
Closest
from £404
Search flights

Seattle Boeing Fld

7 miles from central Seattle
from £646
Search flights

Seattle / Tacoma International

12 miles from central Seattle
Cheapest
from £69
Search flights

Paine Field

20 miles from central Seattle
from £106
Search flights

Phoenix to Seattle: Flight information

The things to know before you go.
Cheapest flight found£69
Cheapest month to flyApril
Average flight time3 hrs, 11 mins
Most popular airlineAlaska Airlines
Average flights per week902

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Populus Seattle
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Staypineapple, The Maxwell Hotel, Seattle Center Seattle
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Finding cheap flights from Phoenix Sky Harbor to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Phoenix Sky Harbor to Seattle is £69. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 10 minutes is the average flight time from Phoenix Sky Harbor to Seattle.
Alaska Airlines, Qatar Airways and American Airlines fly direct from Phoenix Sky Harbor to Seattle.
As of March 2026, there are 451 flights per week flying from Phoenix Sky Harbor to Seattle.
The cheapest month to fly from Phoenix Sky Harbor to Seattle is usually April.
If you're flying from Phoenix Sky Harbor Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 12.1 miles away from the centre of Seattle. We've found flights into this airport from £69.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Phoenix Sky Harbor Airport to Seattle on Friday, 3 April 2026.
Yes – the average flight time is 3 hours and 10 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.
In March, the average temperature is usually around 6°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Frontier Airlines offers the cheapest flight tickets to Seattle.

Flying from Phoenix Sky Harbour International Airport (PHX) to Seattle: what you need to know

  • Expect to be in the air for 3 hours. On average, that's the time it takes for a direct flight from Phoenix Sky Harbour International Airport to Seattle.

  • Seattle's timezone is UTC-7, which is the same as Phoenix (the location of Phoenix Sky Harbour International Airport).

  • Phoenix Sky Harbour International Airport (PHX) to Seattle-Tacoma International Airport (SEA) is the most popular route, with 133 departures a week to pick from. If you have things to do before leaving, the last flight from PHX to SEA is with Southwest Airlines at 22:55. Opt for the first departure operated by Alaska Airlines at 05:00 if you want to get on your way earlier.

  • To avoid missing your PHX to Seattle flight, leave plenty of time to navigate the airport and find your gate. Arriving two hours ahead of international departures and an hour before domestic flights is the general rule.

  • Planning to travel during a peak time like a bank holiday? Expect longer lines at check-in and security. To give yourself peace of mind, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • Start your trip at PHX and travel nonstop to Seattle-Tacoma International Airport (SEA). That's where you can expect to land when searching for Phoenix Sky Harbour International Airport to Seattle tickets.

  • Multiple airlines offer direct flights from Phoenix Sky Harbour International Airport to Seattle. The most well-known include:

  • Located around 4 miles from central Phoenix, PHX can be reached in about 10 minutes by car. Travelling on public transport will take roughly 35 minutes.

  • Want a hassle-free start to your holiday? Stay near PHX. Whether you're taking an early flight from Phoenix Sky Harbour International Airport to Seattle or just don't like being rushed, these hotels are worth a look:

  • Phoenix Sky Harbour International Airport maintains a solid on-time performance, reducing your chances of a delayed flight. Departures from PHX arrive at their destination as scheduled 82.57% of the time.

  • PHX is located at 3400 Sky Harbour Boulevard.

How to find the cheapest flights from Phoenix Sky Harbour International Airport (PHX) to Seattle

  • £48 is currently the best price for a one-way Phoenix Sky Harbour International Airport to Seattle flight. Return plane tickets start from £69. These fares can change based on demand and availability.

  • Book one month before flying. Pricing trends suggest that this is the ideal window for finding cheap flights from PHX to Seattle.

  • The best month for scoring cheap Phoenix Sky Harbour International Airport to Seattle tickets is May. Use the 'Whole month' tool to compare flight prices, then select the dates that offer the biggest savings.

  • There's no need to keep checking in to find out if fares have dropped when you set up a Price Alert. We'll let you know as soon as there's an extra saving on cheap flights from PHX to Seattle.

  • Select your ideal arrival and departure times, number of stops and airlines with our filters. Then, sort the results for your flight from Phoenix Sky Harbour International Airport to Seattle by 'Fastest,' 'Best' or 'Cheapest.'

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to the centre of Seattle takes around 20 minutes by car. The centre is roughly 14 miles away.

  • If you're travelling by public transport, expect a journey time of around 55 minutes.

  • The last thing you want is a long journey to your hotel if you're landing late on a flight from Phoenix Sky Harbour International Airport to Seattle. Stay at one of these accommodation options near SEA instead:

  • Get on the fast track to adventure by picking up a Seattle-Tacoma International Airport rental car. Grab a set of wheels from Thrifty, Europcar or Budget and explore beyond Seattle's main sights.

  • For the lowest price, book your vehicle from Seattle-Tacoma International Airport about one week ahead of your flight from PHX to Seattle.

Lake Union Sea Plane Base Airport (LKE)

  • After your flight from Phoenix Sky Harbour International Airport to Seattle has touched down, you can reach the city centre in about 10 minutes by car. Central Seattle is roughly 2 miles from Lake Union Sea Plane Base Airport (LKE).

  • Public transport will get you there in around 25 minutes.

  • There are some great places to call home for the night near LKE. Tuck yourself in and get cosy after your PHX to Seattle flight at any of these perfectly located options:

Best time to go to Seattle

  • Plan your trip to Seattle during peak season if you prefer a lively atmosphere, but remember that hotel prices tend to be higher. Alternatively, book flights from Phoenix Sky Harbour International Airport to Seattle during the off-season when prices are cheaper and crowds are smaller.

  • Before locking in your Phoenix Sky Harbour International Airport to Seattle plane ticket, think about what kind of weather you prefer. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • February sees average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Search for a cheap ticket from PHX to Seattle around that time if you'd rather travel in cooler conditions.

More about Seattle

  • Start your Seattle trip right by choosing the perfect place to stay. After booking your flight from Phoenix Sky Harbour International Airport to Seattle, explore our selection of accommodation options including:

  • LMN Architects and Greyhound: Bus Station are a couple of big attractions to add to your Seattle to-do list. Keep the momentum going by heading to Boeing Radiation Effects Lab.

Explore more of United States

  • Portland is just one of the many places in United States waiting to be explored once you've seen Seattle. Around 150 miles away to the south, check out popular attractions including Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.

  • Spokane is another favourite destination in United States and is around 230 miles east of Seattle. No trip is complete without dropping by Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.

Plan the rest of your trip from Phoenix to Seattle

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.