$28 Cheap Flights from Phoenix (PHX) to Seattle (SEA)

View $28 flight on Thu, Mar 19, 2026Opens in a new window

Popular airlines from Phoenix Sky Harbor Intl. Airport (PHX) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Phoenix to Seattle (PHX-SEA)

Prices were available within the past 7 days and start at $28 for one-way flights and $56 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, Mar 24 - Fri, Mar 27
PHX
Phoenix
SEA
Seattle
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Mar 24 from Phoenix to Seattle, returning Fri, Mar 27, priced at $56 just found
Frontier Airlines
Tue, Mar 17 - Tue, Mar 24
PHX
Phoenix
SEA
Seattle
$61 Roundtrip, found 1 hour ago
$61
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Mar 17 from Phoenix to Seattle, returning Tue, Mar 24, priced at $61 found 1 hour ago
Frontier Airlines
Sun, Apr 5 - Sat, Apr 11
PHX
Phoenix
SEA
Seattle
$63 Roundtrip, found 17 hours ago
$63
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sun, Apr 5 from Phoenix to Seattle, returning Sat, Apr 11, priced at $63 found 17 hours ago
Southwest Airlines
Wed, Apr 1 - Thu, Apr 9
PHX
Phoenix
SEA
Seattle
$68 Roundtrip, found 13 hours ago
$68
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Wed, Apr 1 from Phoenix to Seattle, returning Thu, Apr 9, priced at $68 found 13 hours ago
Frontier Airlines
Tue, Mar 24 - Sun, Mar 29
PHX
Phoenix
SEA
Seattle
$68 Roundtrip, just found
$68
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, Mar 24 from Phoenix to Seattle, returning Sun, Mar 29, priced at $68 just found
Frontier Airlines
Tue, Mar 17 - Fri, Mar 27
PHX
Phoenix
SEA
Seattle
$71 Roundtrip, found 9 hours ago
$71
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Tue, Mar 17 from Phoenix to Seattle, returning Fri, Mar 27, priced at $71 found 9 hours ago
Frontier Airlines
Sun, Apr 5 - Mon, Apr 6
PHX
Phoenix
SEA
Seattle
$72 Roundtrip, found 1 hour ago
$72
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sun, Apr 5 from Phoenix to Seattle, returning Mon, Apr 6, priced at $72 found 1 hour ago
American Airlines
Thu, Apr 23 - Wed, Apr 29
PHX
Phoenix
SEA
Seattle
$94 Roundtrip, found 8 hours ago
$94
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Thu, Apr 23 from Phoenix to Seattle, returning Wed, Apr 29, priced at $94 found 8 hours ago
Delta
Wed, Apr 1 - Tue, Apr 7
PHX
Phoenix
SEA
Seattle
$97 Roundtrip, just found
$97
Roundtrip
just found
Select Delta flight, departing Wed, Apr 1 from Phoenix to Seattle, returning Tue, Apr 7, priced at $97 just found
United
Wed, Apr 1 - Tue, Apr 7
PHX
Phoenix
SEA
Seattle
$217 Roundtrip, just found
$217
Roundtrip
just found
Select United flight, departing Wed, Apr 1 from Phoenix to Seattle, returning Tue, Apr 7, priced at $217 just found

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Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $188
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $188

Find the cheapest month to fly from Phoenix (PHX) to Seattle (SEA)

February is typically the cheapest month to fly

From $48 - $147 per traveler.

Frequently asked questions

How much does a flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find cheap one-way flights from $28 and cheap return flights from $56 Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) with Expedia. One-way flights usually range from $49 to $903, and return flights typically cost between $169 and $1600. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
January is the cheapest month to fly from Phoenix, AZ (PHX) to Seattle, WA (SEA), with average return fares around $206. This is about 14% lower than the average price throughout the year, as January tends to have less travel activity following the holiday season. Other economical months to fly from Phoenix to Seattle include February and September.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are 7 airlines offering direct flights from PHX to SEA:

  • American Airlines operates around 46 direct flights from PHX to SEA every week
  • Delta operates around 39 direct flights from PHX to SEA every week
  • Frontier Airlines operates around 7 direct flights from PHX to SEA every week
  • Hawaiian Airlines operates around 19 direct flights from PHX to SEA every week
  • Qatar Airways operates around 42 direct flights from PHX to SEA every week

What is the cheapest airline that flies from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
American Airlines is one of the cheapest airlines offering nonstop flights from Phoenix, AZ (PHX) to Seattle, WA (SEA), with round-trip tickets starting from around $302. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Phoenix, AZ (PHX) to Seattle, WA (SEA) will differ from traveler to traveler. If you like to fly early, Delta offers early morning flights. If price is the most important factor, Frontier Airlines typically offers the lowest fares. WN offers the most daily flights from Phoenix to Seattle, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
For flights from Phoenix, AZ (PHX) to Seattle, WA (SEA), January and September are the best months to travel. You can find return flights at around $206 in January, which is a great deal, while September offers a balance of good weather and moderate prices. These months provide a wonderful opportunity to enjoy Seattle's vibrant atmosphere without breaking the bank.*Prices based on flights available on Expedia in the last year.
How many flights per day from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
On average, there are around 16 nonstop flights per day from Sky Harbor Intl. (PHX) to Seattle - Tacoma Intl. (SEA). For more options, look at flights that include layovers.
What is the earliest flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Phoenix Sky Harbor International Airport (PHX) to Seattle - Tacoma International Airport (SEA) typically departs at around 12:10 AM, operated by American Airlines. An early departure like this allows you to make the most of your time in Seattle. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Phoenix (PHX) to Seattle (SEA) are in the early morning, from 6am to 9am. About 28% of travelers prefer this time window. Many major carriers, including Alaska Airlines and Delta, offer flights during this window. This timing is favored because it allows you to make the most of your day in Seattle upon arrival.
How long does it take to fly from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A nonstop flight from PHX to SEA typically takes around 3 hours 20 minutes, covering approximately 1,107 miles. Connecting flights on this route usually add 4 hours 10 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Business class seats are offered on the PHX to SEA route with American Airlines and JetBlue Airways.First class cabins are available on:

  • Delta Air Lines
  • American Airlines
  • United Airlines
  • Hawaiian Airlines

How much is a business class flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A direct, return business class ticket from Phoenix, AZ (PHX) to Seattle, WA (SEA) typically costs between $982 - $1,435 per adult. A non-stop, one-way business class flight is usually around $495 - $766. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from Sky Harbor Intl. (PHX)?
If you're planning to travel to Seattle from Sky Harbor Intl. (PHX), you can fly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like Los Angeles Intl. (LAX), San Diego Intl. (SAN), John Wayne (SNA) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) Seattle Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Phoenix, AZ (PHX-Sky Harbor Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Sky Harbor Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$56
Distance
1106 mi
Average flight time
2 hours 10 mins

Book with confidence

Phoenix to Seattle Flights

The cheapest times to fly from Phoenix to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Phoenix to Seattle are during the month of March. You can find some of the cheapest flights from Phoenix to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Phoenix to Seattle

Sunday is one of the best days to book for cheap flights from Phoenix to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Phoenix to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Phoenix to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $28 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Phoenix to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Phoenix to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Phoenix to Seattle Flights

*Flight schedules are subject to change.

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*Available to One Key members.