HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$48+ Cheap flights from Sky Harbor Intl (PHX) to Seattle (SEA)

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SEA
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Sky Harbor Intl to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl are usually found in January or February, booked 89 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Sky Harbor Intl to Seattle

Cheapest flights from Sky Harbor Intl to Seattle
Explore the most affordable flight options available from Sky Harbor Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 10, 2025.

This Trip.com deal was found by Cheapflights users on 12/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:06 amPHX - SEA
Nonstop3h 19mMultiple Airlines
Fri 1/27:48 pmSEA - PHX
Nonstop3h 02mMultiple Airlines
Deal found 12/9$97
This Frontier deal was found by Cheapflights users on 12/9. 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 12/224:33 pmPHX - SEA
Nonstop3h 20mFrontier
Mon 1/57:48 pmSEA - PHX
Nonstop3h 02mFrontier
Deal found 12/9$103
This Super.com deal was found by Cheapflights users on 12/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:33 pmPHX - SEA
Nonstop3h 20mFrontier
Fri 1/27:48 pmSEA - PHX
Nonstop3h 02mFrontier
Deal found 12/9$112
This Frontier deal was found by Cheapflights users on 12/9. 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.
Tue 12/236:00 amPHX - SEA
1 stop8h 54mFrontier
Fri 1/27:48 pmSEA - PHX
Nonstop3h 02mFrontier
Deal found 12/9$121
This Delta deal was found by Cheapflights users on 12/8. 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.
Thu 12/256:19 amPHX - SEA
Nonstop3h 21mDelta
Wed 1/147:55 pmSEA - PHX
Nonstop2h 59mDelta
Deal found 12/8$127
This Frontier deal was found by Cheapflights users on 12/8. 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.
Wed 12/249:58 amPHX - SEA
1 stop4h 53mFrontier
Sat 1/36:12 pmSEA - PHX
Nonstop3h 00mFrontier
Deal found 12/8$130
This deal was found by Cheapflights users on 12/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:00 pmPHX - SEA
Nonstop3h 17mFrontier
Sat 1/1012:40 pmSEA - PHX
Nonstop3h 04mFrontier
Deal found 12/8$132
This Super.com deal was found by Cheapflights users on 12/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:33 pmPHX - SEA
Nonstop3h 20mFrontier
Mon 1/57:48 pmSEA - PHX
Nonstop3h 02mFrontier
Deal found 12/9$135
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:33 pmPHX - SEA
Nonstop3h 20mFrontier
Tue 1/67:13 pmSEA - PHX
1 stop17h 00mFrontier
Deal found 12/9$136

Find flight deals from Sky Harbor Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Seattle (SEA). 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 December 10, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$91
(Frontier)

One-way from

$48
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$213

Good round-trip deal

$153 or less

Good one-way deal

$99 or less
Provider with most accurate pricing for Phoenix Sky Harbor Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Phoenix Sky Harbor Intl-Seattle/Tacoma Intl flights.
Search Deals
From Phoenix Sky Harbor Intl to Seattle/Tacoma Intl
Search Deals
One-way flight from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Sky Harbor Intl to Seattle 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 December 10, 2025.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Seattle that are best for you.

Fly from

Sky Harbor Intl

Fly to

Seattle

Route

Depart

Return

Price

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 1/7

12:05 pm-2:21 pm

Nonstop3h 16m

Seattle/Tacoma Intl

Wed 1/14

11:50 am-3:45 pm

Nonstop2h 55m

$97

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sun 2/1

6:20 am-8:37 am

Nonstop3h 17m

Seattle/Tacoma Intl

Sun 2/1

7:49 pm-11:48 pm

Nonstop2h 59m

$97

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 1/23

7:59 pm-10:17 pm

Nonstop3h 18m

Seattle/Tacoma Intl

Mon 1/26

7:10 am-11:08 am

Nonstop2h 58m

$97

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 1/31

6:20 am-8:40 am

Nonstop3h 20m

Seattle/Tacoma Intl

Sat 1/31

3:25 pm-7:12 pm

Nonstop2h 47m

$97

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Tue 2/24

12:01 pm-2:18 pm

Nonstop3h 17m

Seattle/Tacoma Intl

Thu 3/5

11:50 am-3:47 pm

Nonstop2h 57m

$117

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 2/12

2:42 pm-4:59 pm

Nonstop3h 17m

Seattle/Tacoma Intl

Tue 2/17

7:10 am-11:06 am

Nonstop2h 56m

$117

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 2/27

6:05 am-8:22 am

Nonstop3h 17m

Seattle/Tacoma Intl

Mon 3/2

7:55 pm-11:50 pm

Nonstop2h 55m

$117

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 1/10

3:20 pm-8:10 pm

1 stop5h 50m

Seattle/Tacoma Intl

Mon 1/12

9:30 am-7:55 pm

2 stops9h 25m

$122

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 2/25

6:30 pm-8:50 pm

Nonstop3h 20m

Seattle/Tacoma Intl

Thu 3/5

7:55 pm-11:50 pm

Nonstop2h 55m

$137

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 1/23

1:51 pm-2:18 pm

1 stop25h 27m

Seattle/Tacoma Intl

Mon 1/26

6:54 pm-10:46 pm

Nonstop2h 52m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 22 results
1
2
3

Compare providers for flights from Sky Harbor Intl to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sky Harbor Intl to Seattle in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy2 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Seattle flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Phoenix Sky Harbor Intl Airport-Seattle flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Seattle flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Phoenix Sky Harbor Intl Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Sky Harbor Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Sky Harbor Intl 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 Phoenix Sky Harbor Intl Airport to Seattle

How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Sky Harbor Intl to Seattle. Price data was last updated on December 5, 2025.

The best time to book flights from Phoenix Sky Harbor Intl Airport to Seattle is 89 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 Phoenix Sky Harbor Intl Airport to Seattle?

Currently, February is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of $38). Flying from Phoenix Sky Harbor Intl Airport to Seattle in July is currently the most expensive (average of $88). 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 PHX to SEA?

Find hourly flight availability from Sky Harbor Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 10, 2025.

It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Seattle at noon. Doing so could potentially save you 46% on the flight price compared to flying in the evening, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Seattle. Price data was last updated on December 6, 2025.

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

The best insider tips for Phoenix Sky Harbor Intl Airport to Seattle flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Phoenix Sky Harbor Intl Airport to Seattle trip
Airlines
Korean Air

Korean Air's economy seats offer 33”-34” pitch, providing more space than many competitors.


Korean Air allows two checked bags up to 50 lbs each for economy passengers.

Read more about Korean AirBy Yulia Denisyuk
Frontier

Frontier offers extra comfort seats with 32” separation for added legroom on short flights.


Early check-in helps avoid overbooking issues and secures your seat on Frontier flights.

Read more about FrontierBy Marisa Garcia
Alaska Airlines

Alaska Airlines offers Wi-Fi for a flat fee, ideal for business travelers on short routes.


Alaska's Premium Class offers extra legroom and free cocktails, enhancing comfort on short flights.

Read more about Alaska AirlinesBy Robert Schrader
Airports
PHX

PHX security lines are short, often under 10 minutes. Check live wait times online for the quickest lane.

Read more about PHXBy Brandon Schultz
SEA

Take the Link light rail from SEA to downtown Seattle for a cost-effective, 40-minute journey.

Read more about SEABy Brandon Schultz
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on Korean Air

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
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

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated December 10, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Phoenix Sky Harbor Intl Airport to Seattle. 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.
Alaska Airlines
8.0
Very good
11,423 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,423 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Southwest
7.9
Good
4,252 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,007 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Hawaiian Airlines
7.8
Good
2,818 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Frontier
5.8
Fair
3,085 reviews
Alaska Airlines
8.0
Very good
11,423 reviews

Boarding

8.1

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.8

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

Find useful and relevant information for your journey from Sky Harbor Intl to Seattle. 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 into for flights to Seattle from Phoenix Sky Harbor Intl?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Phoenix Sky Harbor Intl to Seattle. 6 airlines have flights to Seattle/Tacoma Intl from Phoenix Sky Harbor Intl on a regular basis. Booking flights from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 43 inbound flights from Phoenix Sky Harbor Intl per day.

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

    Airlines like Delta fly from Phoenix Sky Harbor Intl Airport to Seattle in about 3h 16m. The time it takes to get you to your destination is usually consistent. The distance from Phoenix Sky Harbor Intl Airport to Seattle is about 1107 mi. Generally, flights for this route are nonstop.

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

    Cheapflights users have booked flights from Phoenix Sky Harbor Intl Airport to Seattle round-trip from $50. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $83, and Delta, from $96. These flights start at 73% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Phoenix Sky Harbor Intl Airport to Seattle one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $31. Users have also found prices from $51 and $58 on Spirit Airlines and Southwest, respectively.

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

    Consider WestJet (89%), Korean Air (89%) or Air France (88%) when booking your flight. These represent the most reliable airlines when flying from Phoenix Sky Harbor Intl Airport to Seattle.

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

    Looking at all options, your cheapest flight can be booked for $58. While the most popular route (Phoenix Sky Harbor Intl - Seattle/Tacoma Intl) can be booked for $55 on average, our data indicates $645 when flying from Phoenix Sky Harbor Intl Airport to Seattle.

  • Can I find deals for flights from Sky Harbor Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Sky Harbor Intl to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Sky Harbor Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sky Harbor Intl to Seattle.

  • Can I find deals for business class flights from Sky Harbor Intl to Seattle?

    Yes. Cheapflights offers flight deals from Sky Harbor Intl to Seattle 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 Phoenix Sky Harbor Intl Airport to Seattle?

    Currently, February is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of $38). Flying from Phoenix Sky Harbor Intl Airport to Seattle in July is currently the most expensive (average of $88). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
Marysville
Leavenworth
Fife
Aberdeen
Shoreline
Centralia
Federal Way

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 6 airlines flying from Sky Harbor Intl to Seattle

Discover the top 6 airlines that operate flights from Sky Harbor Intl to Seattle. 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 December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$158FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$84Average$196FlexibilityNo cancel feeOn-time85%
DeltaCheapest$105Average$201FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$106Average$206FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$118Average$220FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$135Average$276FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.