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.
$64+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SEA
Nov 22 — Nov 291
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
Find flight deals from Sky Harbor Intl to Seattle
Cheapest flights from Sky Harbor Intl to SeattleExplore 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 October 23, 2025.
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 October 23, 2025.
This Frontier deal was found by Cheapflights users on 10/21. 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 11/37:25 amPHX - SEA
1 stop7h 51mFrontier
Mon 11/108:22 pmSEA - PHX
Nonstop3h 02mFrontier
Deal found 10/21![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/2110:43 pmPHX - SEA
1 stop15h 39mFrontier
Fri 11/286:29 pmSEA - PHX
Nonstop3h 01mFrontier
Deal found 10/22![Frontier logo]()
$100
This Southwest deal was found by Cheapflights users on 10/21. 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 11/128:10 amPHX - SEA
1 stop4h 45mSouthwest
Sat 11/156:00 amSEA - PHX
Nonstop2h 50mSouthwest
Deal found 10/21![Southwest logo]()
$102
This Frontier deal was found by Cheapflights users on 10/22. 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.
Fri 11/76:00 amPHX - SEA
Nonstop3h 18mFrontier
Mon 11/178:22 pmSEA - PHX
Nonstop3h 02mFrontier
Deal found 10/22![Frontier logo]()
$103
This Frontier deal was found by Cheapflights users on 10/23. 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.
Sat 11/156:00 amPHX - SEA
Nonstop3h 18mFrontier
Sat 11/1512:58 pmSEA - PHX
1 stop6h 49mFrontier
Deal found 10/23![Frontier logo]()
$104
This Mytrip deal was found by Cheapflights users on 10/22. 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.
Mon 11/176:00 amPHX - SEA
Nonstop3h 18mFrontier
Wed 11/191:37 pmSEA - PHX
1 stop7h 21mFrontier
Deal found 10/22![Frontier logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 10/20. 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.
Tue 11/49:05 pmPHX - SEA
1 stop16h 02mFrontier
Mon 11/178:22 pmSEA - PHX
Nonstop3h 02mFrontier
Deal found 10/20![Frontier logo]()
$106
This Southwest deal was found by Cheapflights users on 10/22. 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.
Fri 11/149:50 pmPHX - SEA
Nonstop3h 15mSouthwest
Sun 11/163:05 pmSEA - PHX
1 stop6h 35mSouthwest
Deal found 10/22![Southwest logo]()
$107
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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.
Fri 12/53:23 pmPHX - SEA
1 stop7h 20mAlaska Airlines
Wed 12/108:22 amSEA - PHX
Nonstop3h 01mAlaska Airlines
Deal found 10/22![Alaska Airlines logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 10/20. 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.
Sat 11/86:00 amPHX - SEA
Nonstop3h 18mMultiple Airlines
Tue 11/185:45 pmSEA - PHX
Nonstop2h 54mMultiple Airlines
Deal found 10/20![Multiple Airlines logo]()
$109
This Alaska Airlines deal was found by Cheapflights users on 10/20. 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 12/33:55 pmPHX - SEA
1 stop6h 48mAlaska Airlines
Tue 12/99:45 amSEA - PHX
Nonstop2h 57mAlaska Airlines
Deal found 10/20![Alaska Airlines logo]()
$110
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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.
Thu 12/48:00 amPHX - SEA
Nonstop3h 24mAlaska Airlines
Thu 12/41:53 pmSEA - PHX
1 stop5h 24mAlaska Airlines
Deal found 10/21![Alaska Airlines logo]()
$111
Cheap 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 October 23, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $99 (Frontier) |
One-way from | $64 (Southwest) |
Popular in | March |
Cheapest in | January |
Average price | $186 |
Good round-trip deal | $241 or less |
Good one-way deal | $121 or less |
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 October 23, 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
Thu 12/4
3:23 pm-9:52 am
1 stop19h 29m
Seattle/Tacoma Intl
Sun 12/7
1:54 pm-5:49 pm
Nonstop2h 55m
$102
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Thu 12/11
3:23 pm-9:52 am
1 stop19h 29m
Seattle/Tacoma Intl
Sun 12/14
5:30 pm-9:25 pm
Nonstop2h 55m
$102
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Fri 11/14
7:45 pm-12:35 am
1 stop5h 50m
Seattle/Tacoma Intl
Sun 11/16
5:15 am-9:00 am
Nonstop2h 45m
$107
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Sat 12/20
10:50 pm-1:00 am
Nonstop3h 10m
Seattle/Tacoma Intl
Sat 1/3
5:15 pm-12:45 am
1 stop6h 30m
$107
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Tue 1/6
8:25 am-12:20 pm
1 stop4h 55m
Seattle/Tacoma Intl
Tue 1/20
9:30 am-7:55 pm
2 stops9h 25m
$108
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Thu 12/11
12:08 pm-2:25 pm
Nonstop3h 17m
Seattle/Tacoma Intl
Thu 12/11
4:47 pm-11:59 pm
1 stop6h 12m
$111
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Wed 11/12
8:10 am-11:55 am
1 stop4h 45m
Seattle/Tacoma Intl
Sat 11/15
10:15 am-5:55 pm
1 stop6h 40m
$112
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Fri 11/14
9:50 pm-12:05 am
Nonstop3h 15m
Seattle/Tacoma Intl
Mon 11/17
6:15 am-2:40 pm
2 stops7h 25m
$112
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Sat 11/15
7:45 am-2:15 pm
1 stop7h 30m
Seattle/Tacoma Intl
Mon 11/17
6:15 am-2:40 pm
2 stops7h 25m
$122
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Mon 11/24
6:00 am-8:13 am
Nonstop3h 13m
Seattle/Tacoma Intl
Thu 12/4
12:08 pm-7:14 pm
1 stop6h 06m
$130
Showing 1-10 of 23 results
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phoenix Sky Harbor Intl Airport-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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
Prices
Airlines
Delays
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 October 17, 2025.
The best time to book flights from Phoenix Sky Harbor Intl Airport to Seattle is 63 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 $89). 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 October 23, 2025.
It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Seattle at noon. Doing so could potentially save you 52% 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 October 19, 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.
How often are flights from Phoenix to Seattle delayed?
About 9% of weekly flights between Phoenix and Seattle have experienced delays in the past year, with the average delay time being 133 minutes.
What is the most punctual flight time for Phoenix to Seattle flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Phoenix to Seattle flights?
Over the last year, China Southern have had the lowest number of delays on this route, with no flights being classified as delayed.
The best insider tips for Phoenix Sky Harbor Intl Airport to Seattle 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 Phoenix Sky Harbor Intl Airport to Seattle trip
Airlines
![Korean Air]()
Korean Air
![Frontier]()
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.
![Alaska Airlines]()
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.
Airports
Our travel experts
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 October 23, 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.
Food
7.1
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Aug 2025
MFR - SEA
Food
7.1
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Aug 2025
MFR - SEA
Food
7.1
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Aug 2025
MFR - SEA
Food
7.1
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Aug 2025
MFR - SEA
Food
7.1
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Aug 2025
MFR - SEA
Food
7.1
Comfort
7.8
Crew
8.5
Boarding
8.1
Overall
8.0
Entertainment
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Aug 2025
MFR - SEA
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.
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsSeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Marysville
Puyallup
Chehalis
Kirkland
Fife
Issaquah
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Sky Harbor Intl to Seattle
See prices for flight routes from nearby airports that may be better suited for you.
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 October 23, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$53 | Average$158 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$84 | Average$196 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$100 | Average$203 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$137 | Average$219 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$138 | Average$229 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$143 | Average$274 | FlexibilityNo cancel fee | On-time71% |