Cheap flights from Phoenix Sky Harbor Intl Airport to Seattle from £54
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 14/3. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — SEA
27 Feb — 6 Mar1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl are usually found in February or January, booked 62 days in advance, depart on a Wednesday or Friday and return on a Tuesday
Cheap flight deals from Sky Harbor Intl to Seattle
Enter your travel dates to find the best prices.
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 28 January 2026.
Sat 28/208:15
PHX
-
SEA
1 stop5h 21m
Frontier
Fri 6/321:06
SEA
-
PHX
Nonstop2h 55m
Frontier
Deal found 26/1£74
Mon 2/308:15
PHX
-
SEA
1 stop12h 44m
Frontier
Fri 6/321:06
SEA
-
PHX
Nonstop2h 55m
Frontier
Deal found 26/1£83
Thu 12/317:49
PHX
-
SEA
Nonstop3h 14m
Frontier
Thu 19/322:08
SEA
-
PHX
Nonstop2h 57m
Frontier
Deal found 26/1£92
Sat 28/206:00
PHX
-
SEA
1 stop7h 01m
Frontier
Thu 5/309:28
SEA
-
PHX
1 stop13h 27m
Frontier
Deal found 26/1£99
Sun 1/306:45
PHX
-
SEA
Nonstop3h 13m
Frontier
Fri 6/321:06
SEA
-
PHX
Nonstop2h 55m
Frontier
Deal found 26/1£102
Mon 2/308:15
PHX
-
SEA
1 stop12h 44m
Frontier
Thu 5/309:28
SEA
-
PHX
1 stop13h 27m
Frontier
Deal found 26/1£105
Sat 28/322:25
PHX
-
SEA
Nonstop3h 00m
Southwest
Sun 29/319:55
SEA
-
PHX
Nonstop2h 50m
Southwest
Deal found 25/1£122
Best flights from Sky Harbor Intl to Seattle
Discover carefully curated flight deals from Sky Harbor Intl to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 January 2026.
Sat 28/322:25
PHX
-
SEA
Nonstop3h 00m
Southwest
Sun 29/319:55
SEA
-
PHX
Nonstop2h 50m
Southwest
Deal found 25/1£122
Tue 14/406:00
PHX
-
SEA
Nonstop3h 13m
Alaska Airlines
Tue 21/413:02
SEA
-
PHX
Nonstop2h 51m
Alaska Airlines
Deal found 25/1£129
Wed 22/415:50
PHX
-
SEA
Nonstop3h 15m
Delta
Wed 29/420:20
SEA
-
PHX
Nonstop2h 55m
Delta
Deal found 25/1£129
Sat 6/619:52
PHX
-
SEA
Nonstop3h 13m
Alaska Airlines
Sat 13/620:42
SEA
-
PHX
Nonstop3h 02m
Alaska Airlines
Deal found 26/1£129
Sat 20/617:35
PHX
-
SEA
Nonstop3h 15m
Delta
Wed 24/620:25
SEA
-
PHX
Nonstop3h 01m
Delta
Deal found 26/1£129
Wed 1/708:45
PHX
-
SEA
Nonstop3h 14m
Delta
Sat 4/720:25
SEA
-
PHX
Nonstop3h 01m
Delta
Deal found 26/1£129
Wed 18/306:00
PHX
-
SEA
Nonstop3h 13m
Alaska Airlines
Tue 24/313:02
SEA
-
PHX
Nonstop2h 51m
Alaska Airlines
Deal found 25/1£129
Wed 22/406:15
PHX
-
SEA
Nonstop3h 16m
Delta
Sat 2/513:50
SEA
-
PHX
Nonstop2h 55m
Delta
Deal found 25/1£129
Wed 25/206:00
PHX
-
SEA
Nonstop3h 16m
Alaska Airlines
Mon 2/307:00
SEA
-
PHX
Nonstop2h 56m
Alaska Airlines
Deal found 27/1£130
Wed 27/517:35
PHX
-
SEA
Nonstop3h 15m
Delta
Wed 3/611:45
SEA
-
PHX
Nonstop3h 03m
Delta
Deal found 26/1£129
Sat 6/617:35
PHX
-
SEA
Nonstop3h 15m
Delta
Sat 13/620:25
SEA
-
PHX
Nonstop3h 01m
Delta
Deal found 25/1£129
Sun 15/206:05
PHX
-
SEA
Nonstop3h 17m
Delta
Tue 24/209:50
SEA
-
PHX
Nonstop2h 57m
Delta
Deal found 25/1£132
Direct flights from Sky Harbor Intl to Seattle
Explore direct flight options from Sky Harbor Intl to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 28 January 2026.
Sat 28/208:00
PHX
-
SEA
Nonstop3h 17m
Frontier
Fri 6/321:06
SEA
-
PHX
Nonstop2h 55m
Frontier
Deal found 26/1£79
Thu 12/317:49
PHX
-
SEA
Nonstop3h 14m
Frontier
Thu 19/322:08
SEA
-
PHX
Nonstop2h 57m
Frontier
Deal found 26/1£92
Mon 2/306:00
PHX
-
SEA
Nonstop3h 13m
Frontier
Fri 6/321:06
SEA
-
PHX
Nonstop2h 55m
Frontier
Deal found 26/1£97
Sun 1/306:45
PHX
-
SEA
Nonstop3h 13m
Frontier
Fri 6/321:06
SEA
-
PHX
Nonstop2h 55m
Frontier
Deal found 26/1£102
Sat 28/322:25
PHX
-
SEA
Nonstop3h 00m
Southwest
Sun 29/319:55
SEA
-
PHX
Nonstop2h 50m
Southwest
Deal found 25/1£122
Sat 14/322:25
PHX
-
SEA
Nonstop3h 00m
Southwest
Tue 17/306:45
SEA
-
PHX
Nonstop2h 45m
Southwest
Deal found 25/1£126
Wed 22/406:15
PHX
-
SEA
Nonstop3h 16m
Delta
Sat 2/513:50
SEA
-
PHX
Nonstop2h 55m
Delta
Deal found 25/1£129
Wed 25/206:00
PHX
-
SEA
Nonstop3h 16m
Alaska Airlines
Mon 2/307:00
SEA
-
PHX
Nonstop2h 56m
Alaska Airlines
Deal found 27/1£130
Sat 14/220:40
PHX
-
SEA
Nonstop3h 10m
Southwest
Sat 21/211:45
SEA
-
PHX
Nonstop2h 55m
Southwest
Deal found 25/1£130
Wed 22/419:59
PHX
-
SEA
Nonstop3h 19m
Alaska Airlines
Mon 27/413:47
SEA
-
PHX
Nonstop3h 03m
Alaska Airlines
Deal found 27/1£132
Fri 13/305:00
PHX
-
SEA
Nonstop3h 14m
Alaska Airlines
Mon 16/320:05
SEA
-
PHX
Nonstop2h 56m
Alaska Airlines
Deal found 26/1£135
Tue 24/206:05
PHX
-
SEA
Nonstop3h 17m
Delta
Tue 3/307:10
SEA
-
PHX
Nonstop2h 56m
Delta
Deal found 26/1£137
Last-minute flights from Sky Harbor Intl to Seattle
Discover last-minute flight deals from Sky Harbor Intl to Seattle. Data last updated 28 January 2026 and is based on user searches.
Sat 14/220:40
PHX
-
SEA
Nonstop3h 10m
Southwest
Sat 21/211:45
SEA
-
PHX
Nonstop2h 55m
Southwest
Deal found 25/1£130
Sun 15/206:05
PHX
-
SEA
Nonstop3h 17m
Delta
Tue 24/209:50
SEA
-
PHX
Nonstop2h 57m
Delta
Deal found 26/1£132
Wed 18/219:59
PHX
-
SEA
Nonstop3h 18m
Delta
Sun 22/219:55
SEA
-
PHX
Nonstop2h 55m
Delta
Deal found 26/1£135
Tue 24/206:05
PHX
-
SEA
Nonstop3h 17m
Delta
Tue 3/309:50
SEA
-
PHX
Nonstop2h 57m
Delta
Deal found 25/1£129
Tue 24/216:25
PHX
-
SEA
1 stop7h 10m
Southwest
Tue 3/305:15
SEA
-
PHX
Nonstop2h 45m
Southwest
Deal found 27/1£136
Wed 25/206:00
PHX
-
SEA
Nonstop3h 16m
Alaska Airlines
Mon 2/307:00
SEA
-
PHX
Nonstop2h 56m
Alaska Airlines
Deal found 27/1£130
Sat 28/208:15
PHX
-
SEA
1 stop5h 21m
Frontier
Fri 6/321:06
SEA
-
PHX
Nonstop2h 55m
Frontier
Deal found 26/1£74
Sat 28/206:00
PHX
-
SEA
1 stop7h 01m
Frontier
Thu 5/309:28
SEA
-
PHX
1 stop13h 27m
Frontier
Deal found 26/1£99
One-way flights from Sky Harbor Intl to Seattle
Search for one-way flight options from Sky Harbor Intl to Seattle. Find affordable one-way fares based on user searches. Data last updated 28 January 2026.
Sat 14/322:25
PHX
-
SEA
Nonstop3h 00m
Southwest
Deal found 25/1£54
Sat 25/419:00
PHX
-
SEA
Nonstop3h 00m
Southwest
Deal found 25/1£60
Wed 25/220:56
PHX
-
SEA
Nonstop3h 16m
Alaska Airlines
Deal found 27/1£65
Thu 26/216:42
PHX
-
SEA
Nonstop3h 16m
Delta
Deal found 26/1£66
Mon 30/322:40
PHX
-
SEA
Nonstop3h 00m
Southwest
Deal found 26/1£68
Tue 24/208:55
PHX
-
SEA
1 stop7h 45m
Southwest
Deal found 25/1£72
Fri 27/205:25
PHX
-
SEA
1 stop9h 10m
Southwest
Deal found 26/1£75
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 28 January 2026.
Customise 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 858,174 searches. Data last updated 28 January 2026.
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
Sat 28/3
22:25-01:25
Nonstop3h 00m
Seattle/Tacoma Intl
Sun 29/3
19:55-22:45
Nonstop2h 50m
£122
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Tue 14/4
06:00-09:13
Nonstop3h 13m
Seattle/Tacoma Intl
Tue 21/4
13:02-15:53
Nonstop2h 51m
£129
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Wed 22/4
15:50-19:05
Nonstop3h 15m
Seattle/Tacoma Intl
Wed 29/4
20:20-23:15
Nonstop2h 55m
£129
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Sat 6/6
19:52-23:05
Nonstop3h 13m
Seattle/Tacoma Intl
Sat 13/6
20:42-23:44
Nonstop3h 02m
£129
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Sat 20/6
17:35-20:50
Nonstop3h 15m
Seattle/Tacoma Intl
Wed 24/6
20:25-23:26
Nonstop3h 01m
£129
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Wed 1/7
08:45-11:59
Nonstop3h 14m
Seattle/Tacoma Intl
Sat 4/7
20:25-23:26
Nonstop3h 01m
£129
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Wed 18/3
06:00-09:13
Nonstop3h 13m
Seattle/Tacoma Intl
Tue 24/3
13:02-15:53
Nonstop2h 51m
£129
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Wed 22/4
06:15-09:31
Nonstop3h 16m
Seattle/Tacoma Intl
Sat 2/5
13:50-16:45
Nonstop2h 55m
£129
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Wed 27/5
17:35-20:50
Nonstop3h 15m
Seattle/Tacoma Intl
Wed 3/6
11:45-14:48
Nonstop3h 03m
£129
PhoenixSeattle
PHX - SEA
PHXSEA
Phoenix Sky Harbor Intl
Sat 6/6
17:35-20:50
Nonstop3h 15m
Seattle/Tacoma Intl
Sat 13/6
20:25-23:26
Nonstop3h 01m
£129
Flights are sorted by cheapest return flights first.
Deals found on 25/1
Showing 1-10 of 24 results
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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 return 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 return flight from Sky Harbor Intl to Seattle. Price data was last updated on 23 January 2026.
The price you pay for your flight from Phoenix Sky Harbor Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 62 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Seattle?
Currently, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £30). Flying from Phoenix Sky Harbor Intl Airport to Seattle in July is currently the most expensive (average of £65). 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 28 January 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 83% on flights from Phoenix Sky Harbor Intl Airport to Seattle by exploring options for tickets in the morning.
Weekly flight availability from Phoenix Sky Harbor Intl Airport to Seattle
Explore weekly flight availability from Sky Harbor Intl to Seattle. 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 28 January 2026.
The most flights from PHX to SEA are scheduled on a Monday (54 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).
How often are flights from Phoenix to Seattle delayed?
About 11% of weekly flights between Phoenix and Seattle have experienced delays in the past year, with the average delay time being 139 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?
Tuesday 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 past year, Delta have had the lowest number of delays on this route, with just 6% of flights being delayed.
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?
For a flight from Phoenix Sky Harbor Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 31 inbound flights from Phoenix Sky Harbor Intl per day. 0 airlines have flights to Seattle/Tacoma Intl from Phoenix Sky Harbor Intl on a regular basis.
How long is the flight from Phoenix Sky Harbor Intl Airport to Seattle?
Airlines like Southwest, Alaska Airlines, and Delta fly from Phoenix Sky Harbor Intl Airport to Seattle in about 3h. The time it takes to get you to your destination is usually consistent. Phoenix Sky Harbor Intl Airport and Seattle are separated by a distance of 1107 mi. Generally, flights for this route are direct.
What are the most reliable airlines from Phoenix Sky Harbor Intl Airport to Seattle?
Consider Air France (98%), Korean Air (95%) or Virgin Atlantic (86%) 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?
While on average a flight from Phoenix Sky Harbor Intl Airport to Seattle is generally £51, our data shows the cheapest flight currently is £49. When looking at the most popular route, (Phoenix Sky Harbor Intl - Seattle/Tacoma Intl), you can expect to pay £130 for that flight.
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 holiday 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, October is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Seattle (average of £30). Flying from Phoenix Sky Harbor Intl Airport to Seattle in July is currently the most expensive (average of £65). 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.
Browse through other flights departing from Sky Harbor Intl. Flights are based on user searches made on Cheapflights and were last updated on 28 January 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 28 January 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Sky Harbor Intl to Seattle?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from Sky Harbor Intl today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Sky Harbor Intl to Seattle?
Millions of users choose and trust Cheapflights to book the best flight deals from Sky Harbor Intl to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Sky Harbor Intl to Seattle with no change fees?
Yes, we can. To see specific flights from Sky Harbor Intl to Seattle with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Sky Harbor Intl to Seattle become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Sky Harbor Intl today and book when prices fit your budget.
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