151 € Cheap Flights from Phoenix Sky Harbor to Seattle / Tacoma International

Compare Phoenix Sky Harbor to Seattle / Tacoma International flight deals

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

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Flight deals from Phoenix Sky Harbor to Seattle / Tacoma International

Looking for a cheap last-minute deal or the best return flight from Phoenix Sky Harbor Airport to Seattle / Tacoma International Airport? If you want to travel next month, return fares start from 160 €. Find the lowest prices on one-way and return tickets right here.

Seattle.151 € per passenger.Departing Fri, 11 Sep, returning Sun, 20 Sep.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Fri, 11 Sep, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sun, 20 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 151 €, select.

Seattle.153 € per passenger.Departing Fri, 28 Aug, returning Tue, 8 Sep.Return flight with Alaska Airlines and Frontier Airlines.Outbound indirect flight with Alaska Airlines, departs from Phoenix Sky Harbor on Fri, 28 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 8 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 153 €, select.

Seattle.160 € per passenger.Departing Fri, 21 Aug, returning Sat, 29 Aug.Return flight with Alaska Airlines and Frontier Airlines.Outbound indirect flight with Alaska Airlines, departs from Phoenix Sky Harbor on Fri, 21 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Sat, 29 Aug, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 160 €, select.

Seattle.165 € per passenger.Departing Sat, 19 Sep, returning Tue, 22 Sep.Return flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Phoenix Sky Harbor on Sat, 19 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Tue, 22 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 165 €, select.

Seattle.166 € per passenger.Departing Thu, 1 Oct, returning Tue, 6 Oct.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Thu, 1 Oct, arriving in Seattle / Tacoma International.Inbound indirect flight with Frontier Airlines, departs from Seattle / Tacoma International on Tue, 6 Oct, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 166 €, select.

Seattle.167 € per passenger.Departing Wed, 4 Nov, returning Wed, 4 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Wed, 4 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 4 Nov, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 167 €, select.

Seattle.167 € per passenger.Departing Tue, 20 Oct, returning Tue, 20 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Tue, 20 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 20 Oct, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 167 €, select.

Seattle.168 € per passenger.Departing Mon, 17 Aug, returning Mon, 17 Aug.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Mon, 17 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 17 Aug, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 168 €, select.

Seattle.172 € per passenger.Departing Wed, 28 Oct, returning Wed, 4 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Wed, 28 Oct, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 4 Nov, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 172 €, select.

Seattle.177 € per passenger.Departing Wed, 26 Aug, returning Tue, 1 Sep.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Wed, 26 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 1 Sep, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 177 €, select.

Seattle.185 € per passenger.Departing Tue, 11 Aug, returning Sun, 18 Oct.Return flight with Frontier Airlines and Alaska Airlines.Outbound indirect flight with Frontier Airlines, departs from Phoenix Sky Harbor on Tue, 11 Aug, arriving in Seattle / Tacoma International.Inbound indirect flight with Alaska Airlines, departs from Seattle / Tacoma International on Sun, 18 Oct, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 185 €, select.

Seattle.189 € per passenger.Departing Tue, 29 Sep, returning Fri, 13 Nov.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Tue, 29 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Fri, 13 Nov, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 189 €, select.

Seattle.190 € per passenger.Departing Sat, 26 Sep, returning Sun, 4 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Sat, 26 Sep, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 4 Oct, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 190 €, select.

Seattle.199 € per passenger.Departing Tue, 11 Aug, returning Sun, 18 Oct.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Tue, 11 Aug, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Sun, 18 Oct, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 199 €, select.

Seattle.207 € per passenger.Departing Wed, 18 Nov, returning Tue, 1 Dec.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Wed, 18 Nov, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 1 Dec, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 207 €, select.

Seattle.237 € per passenger.Departing Tue, 23 Mar, returning Tue, 23 Mar.Return flight with Delta.Outbound direct flight with Delta departs from Phoenix Sky Harbor on Tue, 23 Mar, arriving in Seattle / Tacoma International.Inbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 23 Mar, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From 237 €, select.

Find the cheapest month to fly from Phoenix Sky Harbor to Seattle / Tacoma International

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 / Tacoma International flights are currently cheapest in September.

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Direct flights from Phoenix Sky Harbor to Seattle / Tacoma International

Phoenix Sky Harbor to Seattle / Tacoma International: Alternative routes

Compare routes from Phoenix Sky Harbor to Seattle below. You may find an airport to fly into that's cheaper, faster, or easier than Seattle / Tacoma International.

Phoenix to Seattle: Flight information

The things to know before you go.

Cheapest flight found	151 €
Cheapest month to fly	September
Average flight time	3 hrs, 13 mins
Most popular airline	Qatar Airways
Average flights per week	526

Finding cheap flights from Phoenix Sky Harbor to Seattle / Tacoma International: Frequently asked questions

How much are return flights from Phoenix Sky Harbor to Seattle / Tacoma International?

The best price we found for a return flight from Phoenix Sky Harbor to Seattle / Tacoma International is 151 €. 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.

How long does it take to fly from Phoenix Sky Harbor to Seattle / Tacoma International?

3 hours and 13 minutes is the average flight time from Phoenix Sky Harbor to Seattle / Tacoma International.

Which airlines fly direct from Phoenix Sky Harbor to Seattle / Tacoma International?

Qatar Airways, Alaska Airlines and American Airlines fly direct from Phoenix Sky Harbor to Seattle / Tacoma International.

How many flights are there a week from Phoenix Sky Harbor to Seattle / Tacoma International?

As of July 2026, there are 526 flights per week flying from Phoenix Sky Harbor to Seattle / Tacoma International.

When is the cheapest time to fly from Phoenix Sky Harbor to Seattle / Tacoma International?

The cheapest month to fly from Phoenix Sky Harbor to Seattle / Tacoma International is usually September.

Which upcoming date is cheapest to fly from Phoenix Sky Harbor Airport to Seattle / Tacoma International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Phoenix Sky Harbor Airport to Seattle / Tacoma International Airport on Friday, 11 September 2026.

Can I get a direct flight from Phoenix Sky Harbor Airport to Seattle / Tacoma International Airport?

Yes – the average flight time is 3 hours and 13 minutes.

How can I find the best flight deal to Seattle / Tacoma International?

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 / Tacoma International 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.

When is the best time to book flights to Seattle?

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.

Which is the cheapest airline to fly from Phoenix Sky Harbor Airport to Seattle / Tacoma International with?

Currently, Frontier Airlines and Alaska Airlines offer the cheapest flight tickets to Seattle / Tacoma International.

Travelling from Phoenix Sky Harbour Airport (PHX) to Seattle / Tacoma International Airport (SEA): what you need to know

Jump on a direct flight from Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport and you'll be in the air for an average of 3 hours 10 minutes.
Seattle's timezone is UTC-8, making Seattle one hour behind Phoenix.
Each week, there are 124 Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport flights. If you want to take off as soon as possible, pick the 05:00 Alaska Airlines flight. If you're eager to make the most of your time before you fly, the last flight is at 22:55 with Southwest Airlines.
To ensure you catch your PHX to SEA flight, allow plenty of time for things like check-in and baggage drop. Arriving two hours before international departures and one hour before domestic flights is the general rule.
You can expect longer lines in popular months like April. Arriving up to four hours ahead of international flights and two hours for domestic departures is a smart move.
Plenty of airlines operate direct flights from Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport. Fly nonstop to Seattle with these top carriers and experience this incredible part of the United States:
The airline most travellers fly with on this route is Alaska Airlines.
Delta is the most punctual carrier offering PHX to SEA flights. An exceptional 87.02% of its departures on this route arrive as scheduled.
We make it simple to book a flight with a stopover. To see your options for tickets from Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport, uncheck 'Direct flights only.' Then, choose a flight that has a stop long enough to explore the city of your choice. Popular stopovers between PHX and SEA include:
- Salt Lake City Airport
- Portland Airport
- Boise Airport

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

The cheapest price we've seen for a one-way Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport flight is 45 €. A return plane ticket is currently 151 €. Depending on the availability when you book, these fares can change.
To score cheap tickets from PHX to SEA, book ahead. Airlines generally offer lower fares when flights are first made available.
May is the cheapest month for flights from Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport. If you need to travel during a different time of year, the 'Whole month' tool will show you the lowest prices across every month.
Save time looking for cheap flights from PHX to SEA by creating a Price Alert. You'll receive an email or notification through the app when fares go down.
Tailor your flights using filters. Select your ideal arrival and departure times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Cheapest' or 'Best' flights from Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport.

Handy information about Phoenix Sky Harbour Airport (PHX)

PHX is located at 3400 Sky Harbour Boulevard.
80% of flights departing from Phoenix Sky Harbour Airport touch down at their destination as planned. With its dependable on-time performance, you're unlikely to be delayed when setting off from PHX.
Phoenix Sky Harbour Airport is about 5 kilometres from central Phoenix. If you're catching a taxi, ride-sharing or driving from the centre, it'll take you 10 minutes or so to arrive, depending on the traffic.
Catching public transport? You can expect a journey time of around 25 minutes.
Searching for a convenient hotel near PHX? If you're catching an early flight from Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport, these accommodation options will put you moments from your departure gate:

Arriving at Seattle / Tacoma International Airport (SEA)

If you're landing on a late Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport flight, nothing tops the convenience of staying near the terminal. Grab your bags from the carousel and then be resting not long after at one of these hotels near SEA:
Pick up a Seattle / Tacoma International Airport rental car and explore Seattle and beyond with your own wheels. Thrifty, Europcar and Budget are well-known companies you can book with here.
Booking your ride from Seattle / Tacoma International Airport about one week in advance can help you get the best possible rate.

When to fly to Seattle / Tacoma International Airport (SEA)

It's time to plan your trip dates for your flight from Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport. July is the busiest month to visit Seattle. If you'd like a more relaxed vibe, go in March.
The warmest month in Seattle is August, with the temperature ranging between 12ºC (54ºF) and 28ºC (82ºF). Lock in your flights from Phoenix Sky Harbour Airport to Seattle / Tacoma International Airport in this month if you like this kind of weather.
February has average temperatures of between -1ºC (30ºF) and 11ºC (52ºF). Search for cheap tickets from PHX to SEA sometime then if you'd rather travel in cooler conditions.

Explore more of the United States

You've visited Seattle, now it's time to explore other corners of the United States. Journey about 241 kilometres south to Portland to tick off its leading sights. From Portland Japanese Garden to Peninsula Park Rose Garden and Beyond Van Gogh Portland, there's plenty to keep you on the go.
Around 370 kilometres east of Seattle, Spokane is another essential stop in the United States. Experience the best of this destination with a visit to Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.