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Sky Harbor Intl

$67+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHX
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl are usually found in September or August, booked 78 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 June 12, 2025.

Round-trip from

$107
(Southwest)

One-way from

$67
(Southwest)

Popular in

December

Cheapest in

September

Average price

$187

Good round-trip deal

$163 or less

Good one-way deal

$93 or less
From Seattle/Tacoma Intl to Phoenix Sky Harbor Intl
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One-way flight from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl
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Highest demand for flights based on searches. 9% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl.
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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 June 12, 2025.

This Southwest deal was found by Cheapflights users on 6/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/107:00 amSEA - PHX
Nonstop2h 50mSouthwest
Wed 9/173:20 pmPHX - SEA
1 stop7h 30mSouthwest
Deal found 6/10$107
This Alaska Airlines deal was found by Cheapflights users on 6/9. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/61:35 pmSEA - PHX
Nonstop2h 54mAlaska Airlines
Mon 8/113:47 pmPHX - SEA
Nonstop3h 05mAlaska Airlines
Deal found 6/9$115
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/155:59 pmSEA - PHX
Nonstop3h 01mHawaiian Airlines
Sun 8/176:00 amPHX - SEA
Nonstop3h 04mHawaiian Airlines
Deal found 6/12$133
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1112:13 pmSEA - PHX
Nonstop3h 04mFrontier
Sat 8/166:48 amPHX - SEA
Nonstop3h 14mFrontier
Deal found 6/11$136
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/215:20 pmSEA - PHX
Nonstop3h 03mAmerican Airlines
Thu 8/287:15 amPHX - SEA
Nonstop3h 10mAmerican Airlines
Deal found 6/10$147
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/49:54 amSEA - PHX
Nonstop3h 01mMultiple Airlines
Mon 7/76:48 amPHX - SEA
Nonstop3h 14mMultiple Airlines
Deal found 6/11$152
This Delta deal was found by Cheapflights users on 6/10. 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 7/17:55 pmSEA - PHX
Nonstop2h 59mDelta
Sun 7/66:00 amPHX - SEA
Nonstop3h 05mDelta
Deal found 6/10$167
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/23:58 pmSEA - PHX
1 stop19h 51mSpirit Airlines
Mon 7/712:54 pmPHX - SEA
1 stop26h 09mSpirit Airlines
Deal found 6/10$194
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/285:10 amSEA - PHX
1 stop5h 38mUnited Airlines
Mon 6/307:37 pmPHX - SEA
1 stop5h 22mUnited Airlines
Deal found 6/10$223

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 June 12, 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

Wed 9/10

7:00 am-9:50 am

Nonstop2h 50m

Phoenix Sky Harbor Intl

Wed 9/17

3:20 pm-10:50 pm

1 stop7h 30m

$107

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 8/6

1:35 pm-4:29 pm

Nonstop2h 54m

Phoenix Sky Harbor Intl

Mon 8/11

3:47 pm-6:52 pm

Nonstop3h 05m

$115

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Mon 8/11

12:13 pm-3:17 pm

Nonstop3h 04m

Phoenix Sky Harbor Intl

Sat 8/16

6:48 am-10:02 am

Nonstop3h 14m

$136

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Thu 8/21

5:20 pm-8:23 pm

Nonstop3h 03m

Phoenix Sky Harbor Intl

Thu 8/28

7:15 am-10:25 am

Nonstop3h 10m

$147

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Fri 7/4

9:54 am-12:55 pm

Nonstop3h 01m

Phoenix Sky Harbor Intl

Mon 7/7

6:48 am-10:02 am

Nonstop3h 14m

$152

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Tue 7/15

5:59 pm-9:00 pm

Nonstop3h 01m

Phoenix Sky Harbor Intl

Fri 8/15

1:55 pm-5:00 pm

Nonstop3h 05m

$162

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Tue 7/15

9:35 am-12:30 pm

Nonstop2h 55m

Phoenix Sky Harbor Intl

Sun 7/20

5:55 am-8:55 am

Nonstop3h 00m

$163

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 7/2

3:58 pm-11:49 am

1 stop19h 51m

Phoenix Sky Harbor Intl

Mon 7/7

12:54 pm-3:03 pm

1 stop26h 09m

$191

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Sat 6/28

5:10 am-10:48 am

1 stop5h 38m

Phoenix Sky Harbor Intl

Mon 6/30

7:37 pm-12:59 am

1 stop5h 22m

$223

SeattlePhoenix

SEA - PHX

SEAPHX

Seattle/Tacoma Intl

Wed 8/27

3:50 pm-6:50 pm

Nonstop3h 00m

$67

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 18 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.

Read more about Alaska Airlinesby Robert Schrader
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 June 9, 2025.

The best time to book flights from Seattle to Phoenix Sky Harbor Intl Airport is 78 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 June 12, 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 at noon tend to be the most expensive. A flight in the evening could potentially save you up to 32% 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 June 8, 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.

Weekly flight availability from Seattle to Phoenix Sky Harbor Intl Airport

Explore weekly flight availability from Seattle to Sky Harbor Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 12, 2025.

The most flights from SEA to PHX are scheduled on a Thursday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (23 on average).

Rainfall in Sky Harbor Intl by month

Plan your trip to Sky Harbor Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Phoenix Sky Harbor Intl Airport ranges from 0.0 - 1.1 inches per month. July is typically the wettest month, when rainfall can reach 1.1 in. June is typically the driest time to visit Phoenix Sky Harbor Intl Airport when rainfall is around 0.0 in.

Temperature in Sky Harbor Intl by month

Plan your trip to Sky Harbor Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Phoenix Sky Harbor Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 95.0 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 55.4 F).

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 June 12, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Seattle to Phoenix have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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

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

    Southwest, at $107, was found to be the cheapest airline from Seattle to Phoenix Sky Harbor Intl Airport.Alternate airlines to your destination round-trip include Alaska Airlines and Hawaiian Airlines. Southwest is priced at 48% 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 Southwest ($67), Frontier ($68), and Delta ($80).

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

    Consider Air France (95%), WestJet (92%) or Delta (90%) 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 $331, our data indicates the cheapest price to be $55. The most popular route (Seattle/Tacoma Intl - Phoenix Sky Harbor Intl), is priced around $115.

  • 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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$46Average$147FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$72Average$137FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$83Average$211FlexibilityNo cancel feeOn-time85%
DeltaCheapest$97Average$224FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$126Average$269FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$136Average$279FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$167Average$334FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$246Average$336FlexibilityNo cancel feeOn-time69%

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