Sky Harbor Intl

$73+ Cheap flights from Seattle (SEA) to Sky Harbor Intl (PHX)

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHX
Oct 11 — Oct 181
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl are usually found in September or January, booked 71 days in advance, depart on a Wednesday or Monday and return on a Friday

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 September 11, 2025.

Round-trip from

$102
(Cheapflightsfares)

One-way from

$73
(Booking.com)

Popular in

December

Cheapest in

September

Average price

$163

Good round-trip deal

$166 or less

Good one-way deal

$103 or less
From Seattle/Tacoma Intl to Phoenix Sky Harbor Intl
One-way flight from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl
Highest demand for flights based on searches. 9% potential increase in price ($22 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl.
Price to beat on a one-way flight from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl.

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 September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/68:22 pmSEA - PHX
Nonstop3h 02mFrontier
Sat 11/86:00 amPHX - SEA
Nonstop3h 18mFrontier
Deal found 9/9$102
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3112:58 pmSEA - PHX
1 stop10h 04mFrontier
Sun 11/96:00 amPHX - SEA
Nonstop3h 18mFrontier
Deal found 9/10$103
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/223:20 pmSEA - PHX
Nonstop2h 48mDelta
Tue 10/287:05 amPHX - SEA
Nonstop3h 15mDelta
Deal found 9/9$105
This Priceline deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/294:36 pmSEA - PHX
1 stop7h 08mFrontier
Thu 10/26:05 amPHX - SEA
Nonstop3h 15mFrontier
Deal found 9/10$106
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/298:31 pmSEA - PHX
Nonstop3h 00mFrontier
Sun 10/56:05 amPHX - SEA
Nonstop3h 15mFrontier
Deal found 9/9$107
This Priceline deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:00 pmSEA - PHX
Nonstop2h 59mFrontier
Sun 10/195:54 pmPHX - SEA
Nonstop3h 15mFrontier
Deal found 9/10$108
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/303:30 pmSEA - PHX
Nonstop2h 56mDelta
Tue 10/71:45 pmPHX - SEA
Nonstop3h 11mDelta
Deal found 9/10$109
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:22 pmSEA - PHX
Nonstop3h 02mMultiple Airlines
Wed 11/126:20 amPHX - SEA
Nonstop3h 14mMultiple Airlines
Deal found 9/11$110
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:31 pmSEA - PHX
Nonstop3h 00mFrontier
Thu 10/26:05 amPHX - SEA
Nonstop3h 15mFrontier
Deal found 9/9$111
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:15 amSEA - PHX
Nonstop2h 45mSouthwest
Sat 11/159:05 amPHX - SEA
Nonstop3h 15mSouthwest
Deal found 9/11$112
This Trip.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:39 pmSEA - PHX
1 stop5h 02mFrontier
Fri 10/316:00 amPHX - SEA
Nonstop3h 18mFrontier
Deal found 9/10$113
This Priceline deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/34:40 pmSEA - PHX
1 stop6h 49mFrontier
Mon 10/66:05 amPHX - SEA
Nonstop3h 15mFrontier
Deal found 9/11$114

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 11, 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

Tue 9/30

3:30 pm-6:26 pm

Nonstop2h 56m

Phoenix Sky Harbor Intl

Tue 10/7

1:45 pm-4:56 pm

Nonstop3h 11m

$109

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 10/22

7:10 am-10:00 am

Nonstop2h 50m

Phoenix Sky Harbor Intl

Tue 10/28

4:35 pm-11:45 pm

1 stop7h 10m

$115

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 10/22

7:10 am-10:00 am

Nonstop2h 50m

Phoenix Sky Harbor Intl

Wed 11/5

1:50 pm-6:20 pm

1 stop5h 30m

$115

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 11/8

7:30 pm-11:21 pm

Nonstop2h 51m

Phoenix Sky Harbor Intl

Wed 11/12

8:00 am-10:20 am

Nonstop3h 20m

$127

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 10/15

7:10 am-10:06 am

Nonstop2h 56m

Phoenix Sky Harbor Intl

Mon 10/20

7:06 pm-10:24 pm

Nonstop3h 18m

$127

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 11/8

7:30 pm-11:21 pm

Nonstop2h 51m

Phoenix Sky Harbor Intl

Tue 11/11

8:00 am-10:20 am

Nonstop3h 20m

$127

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Tue 12/2

11:45 am-3:42 pm

Nonstop2h 57m

Phoenix Sky Harbor Intl

Sat 12/13

7:55 pm-10:14 pm

Nonstop3h 19m

$127

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 11/1

5:30 pm-10:05 pm

1 stop4h 35m

Phoenix Sky Harbor Intl

Tue 11/4

5:45 pm-10:30 pm

1 stop5h 45m

$132

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sun 10/12

2:31 pm-10:55 pm

1 stop8h 24m

Phoenix Sky Harbor Intl

Fri 10/17

5:53 pm-9:08 pm

Nonstop3h 15m

$133

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sun 11/16

7:10 am-11:07 am

Nonstop2h 57m

Phoenix Sky Harbor Intl

Wed 11/19

7:56 pm-10:16 pm

Nonstop3h 20m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 23 results
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The best insider tips for Seattle to Phoenix Sky Harbor Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Phoenix Sky Harbor Intl Airport trip
Airlines
Frontier

Frontier’s UpFront Plus seats offer extra comfort with a guaranteed empty middle seat.


Early morning flights have a better chance of on-time departure and arrival.

Read more about Frontierby Marisa Garcia
Alaska Airlines

Alaska’s Wi-Fi is a bargain, allowing work during flights.


Alaska’s Premium Class offers extra legroom and free cocktails.

Airports
SEA

Use SEA Spot Saver to schedule security screening appointments in advance, reducing wait times without needing TSA PreCheck or CLEAR.

Read more about SEAby Brandon Schultz
PHX

Take the PHX Sky Train to 44th Street Station for quick, inexpensive access to downtown Phoenix via light rail.

Read more about PHXby Brandon Schultz
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Brandon Schultz

Brandon Schultz

Expert on PHX and SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

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 round-trip 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 round-trip flight from Seattle to Sky Harbor Intl. Price data was last updated on August 29, 2025.

The best time to book flights from Seattle to Phoenix Sky Harbor Intl Airport is 71 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $258). Flying from Seattle to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $337). 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 September 11, 2025.

One of the essential ways to save on airfare from Seattle to Phoenix Sky Harbor Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 29% on airfare.

What is the cheapest day to fly from Seattle to Phoenix Sky Harbor Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Sky Harbor Intl. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Seattle to Phoenix Sky Harbor Intl Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 September 11, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Seattle to Phoenix Sky Harbor Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
8.0
Very good

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Entertainment

7.0

Crew

8.5

Boarding

8.1

Comfort

7.8

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 38 daily outbound flights to Phoenix Sky Harbor Intl from 8 different airlines.

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

    Departing from Seattle to Phoenix Sky Harbor Intl Airport will take you 2h 50m. Airlines will cover a distance of 1107 mi. All flights are typically nonstop.

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

    Frontier, at $48, was found to be the cheapest airline from Seattle to Phoenix Sky Harbor Intl Airport.Alternate airlines to your destination round-trip include Spirit Airlines and Hawaiian Airlines. Frontier is priced at 77% 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 airlines for a one-way flight from Seattle to Phoenix Sky Harbor Intl Airport are Alaska Airlines ($75), Southwest ($80), and Delta ($82).

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

    Consider LATAM Airlines (100%), Aeromexico (98%) or Air France (96%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Phoenix Sky Harbor Intl Airport.

  • What are the cheapest flights from Seattle to Phoenix Sky Harbor Intl Airport?

    Looking for the cheapest flight from Seattle to Phoenix Sky Harbor Intl Airport? While on average our users pay $380, our data indicates the cheapest price to be $60. The most popular route (Seattle/Tacoma Intl - Phoenix Sky Harbor Intl), is priced around $69.

  • 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 vacation 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 $258). Flying from Seattle to Phoenix Sky Harbor Intl Airport in March is currently the most expensive (average of $337). 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

Traveling to a place near Phoenix Sky Harbor Intl Airport?

Book flights to Phoenix Sky Harbor Intl Airport if you plan to visit one of these locations
Payson
Glendale
Chandler
Globe
Goodyear
Casa Grande
Buckeye
Camp Verde
Surprise
Peoria
Paradise Valley
Avondale
Guadalupe

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Seattle to Sky Harbor Intl

Discover the top 8 airlines that operate flights from Seattle to Sky Harbor Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$48Average$162FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$72Average$142FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$83Average$208FlexibilityNo cancel feeOn-time85%
DeltaCheapest$97Average$231FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$130Average$267FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$144Average$286FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$167Average$326FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$236Average$304FlexibilityNo cancel feeOn-time69%

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