PHX - SEA

£74 Find Cheap Flights from Phoenix to Seattle – Compare and Save

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Everything you should know

Cheapest return flight
£142
Typical prices: £134-£236
Southwest
Sat 3/11Fri 16/11
PHX - SEA • 2 stops
Cheapest direct flights
£149
Typical prices: £134-£237
Southwest
Tue 9/10Sat 13/10
PHX - SEA • Direct
Advice from real travellers
At SeaTac, expect possible gate changes and an underground train between terminals.
Ongoing construction can make SeaTac feel disorienting, so allow extra time after landing.
Expert advice
+1
Expert advice
+1
Direct flights
You can fly direct with Alaska Airlines, Delta, and others. Average duration is 3h 14m.
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 93% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 9 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 54% price drop
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Cheapest • Avg £86 (return)
Shortest trip • 6h 22m (one-way)
Insights
Insights
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We hope you enjoy your trip to Seattle!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Phoenix to Seattle (PHX-SEA)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Phoenix to Seattle

Tue, 3 Nov - Mon, 16 Nov
Southwest Logo
15:10 - 21:30PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
7h 20m2 stops San Diego Oakland
Southwest Logo
08:05 - 18:55SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
9h 50m2 stops San Jose Los Angeles Los Angeles
£142Southwest
Fri, 9 Oct - Tue, 13 Oct
Southwest Logo
22:30 - 01:40PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
3h 10mdirect
Southwest Logo
05:35 - 08:20SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
2h 45mdirect
£149Southwest
Sat, 24 Oct - Tue, 27 Oct
Alaska Airlines Logo
07:38 - 14:17PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
6h 39m1 stop San Diego
Alaska Airlines Logo
11:31 - 18:42SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
7h 11m1 stop San Diego
£150Alaska Airlines
Wed, 7 Oct - Sat, 10 Oct
Southwest Logo
20:55 - 23:55PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
3h 00mdirect
Southwest Logo
05:25 - 08:10SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
2h 45mdirect
£153Southwest
Sun, 15 Nov - Wed, 18 Nov
Southwest Logo
22:30 - 00:40PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
3h 10mdirect
Southwest Logo
16:40 - 22:35SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
4h 55m1 stop Oakland
£154Southwest
Tue, 29 Sep - Sat, 3 Oct
Alaska Airlines Logo
12:13 - 18:52PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
6h 39m1 stop San Diego
Alaska Airlines Logo
16:59 - 19:51SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
2h 52mdirect
£155Alaska Airlines
Fri, 9 Oct - Tue, 13 Oct
Southwest Logo
22:30 - 01:40PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
3h 10mdirect
Southwest Logo
06:15 - 12:40SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
6h 25m1 stop Denver Intl
£156Southwest
Fri, 2 Oct - Sat, 10 Oct
Alaska Airlines Logo
18:38 - 21:46PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
3h 08mdirect
Alaska Airlines Logo
14:59 - 20:41SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
5h 42m1 stop San Diego
£159Alaska Airlines
Sun, 22 Nov - Wed, 2 Dec
Delta Logo
06:10 - 08:25PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
3h 15mdirect
Delta Logo
17:59 - 21:53SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
2h 54mdirect
£160Delta
Thu, 8 Oct - Sat, 10 Oct
Southwest Logo
22:30 - 01:40PHX  Phoenix Sky Harbor Intl-SEA Seattle/Tacoma Intl
3h 10mdirect
Southwest Logo
09:45 - 17:55SEA  Seattle/Tacoma Intl-PHX Phoenix Sky Harbor Intl
8h 10m1 stop San Jose
£161Southwest
Booking Insights

Price, demand, and travel trends for Phoenix Sky Harbor Intl Airport to Seattle flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Phoenix Sky Harbor Intl Airport to Seattle with more confidence.

How much is a return flight from Phoenix Sky Harbor Intl Airport to Seattle?

Return flights from Phoenix Sky Harbor Intl Airport to Seattle start at £142. Prices are typical for this route right now, with typical return fares ranging from £134 to £236. The lowest price found in the past 5 days was £142 on Southwest.

What's the cheapest day of the week to fly from Phoenix Sky Harbor Intl Airport to Seattle?

Friday is the cheapest day of the week to fly from Phoenix Sky Harbor Intl Airport to Seattle and is 3% cheaper than the average day. Sunday is the most expensive day with flight prices 6% higher than average. Based on deals found by KAYAK users in the last 12 months.

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

  • January is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Seattle at £86 return.
  • July (£228) and June (£210) are the most expensive months.
  • The price difference between flying in the cheapest and most expensive months is 164% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices from Phoenix Sky Harbor Intl Airport to Seattle the cheapest?

Flights from Phoenix Sky Harbor Intl Airport to Seattle are cheapest 9 weeks before departure. Booking in this window typically costs about 44% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Key details for Phoenix Sky Harbor Intl Airport to Seattle flights

Low season

February

Cheapest flight

£74
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly (12% more expensive on average)
Flights from Phoenix Sky Harbor Intl Airport to Seattle

When to book flights from Phoenix to Seattle

Are your dates flexible? Find out the best times to travel from Phoenix to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Flights from Phoenix to Seattle: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Phoenix to Seattle 
SydneyFlew with Alaska Airlines-Oct 2024
May need to catch the underground train between gate locations in SEATAC, prepare yourself accordingly
GlennFlew with Alaska Airlines-Jul 2024
Be prepared for the disorientation of SeaTac as the entire terminal appears to be under construction. It’s unnerving.

Your Phoenix Sky Harbor Intl Airport to Seattle flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Where are the ATMs located at Sky Harbor Phoenix Airport?

    There are a few ATM locations at the PHX Airport. The ATM service is offered by the Bank of America and can be found both at pre-security and post-security of both Terminals 3 and 4. At Terminal 3 they are located near Level I Baggage Claim and Near Gate F5 while in Terminal 4 they can be found at Levels 1, 2, and 3 and near gates A1, B1, C1, and D1.

  • Are there hotels near Seattle airport?

    Yes, there are budget and luxury hotels close to the Seattle airport. Some of the hotels include Best Western airport which is approximately 2.5 miles from the airport, and Country Inn which is about 1.5 miles from the airport just to mention a few.

  • I have lost my luggage at the Seattle airport. Where can I report this?

    Seattle airport has lost and found services at the baggage claim level. You must file a lost and found claim online. You will need to give your contact information, location, and item description.

  • Is Sky Harbor Phoenix Airport Accessible?

    Accessibility features are available at Phoenix airport. Wheelchairs are available in the airport to aid the physically disabled to maneuver with ease. If you need to carry along your wheelchair during your travel, you can communicate with your airline. You can make reservations if you need to travel with your oxygen tank. Hearing devices are also available at the airport. Accessible restrooms with professional caregivers are also available and you will only need to seek directions from the information desk.

  • Which airlines offer extra legroom and free seat selection on Phoenix Sky Harbor Intl Airport to Seattle flights?

    Among airlines operating Phoenix Sky Harbor Intl Airport to Seattle flights:

    • Alaska Airlines: offers extra legroom; offers free seat selection
    • Delta: offers extra legroom; offers free seat selection
    • Southwest: offers free seat selection
    • American Airlines: offers extra legroom; offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines are available on the route from Phoenix Sky Harbor Intl Airport to Seattle?

    4 airlines operate flights between Phoenix Sky Harbor Intl Airport and Seattle. The airlines offering direct flights on this route include:

    • Alaska Airlines
    • Delta
    • American Airlines
    • Southwest

  • Which airports can I use when flying from Phoenix Sky Harbor Intl Airport to Seattle?

    Flights from Phoenix Sky Harbor Intl Airport to Seattle usually depart from Phoenix Sky Harbor Intl (PHX) and arrive at Seattle/Tacoma Intl (SEA).

  • Which airlines include bags at no extra cost on Phoenix Sky Harbor Intl Airport to Seattle flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Alaska Airlines: a cabin bag and a checked bag in Economy class
    • Delta: a cabin bag and a checked bag in Economy class
    • Southwest: a cabin bag and a checked bag in Economy class

    Bag allowance can vary by ticket type, cabin class, route, and airline, so travellers should check the fare details before booking.

  • How much can I save by having a stopover when flying from Phoenix Sky Harbor Intl Airport to Seattle?

    On this route, stopover flights are cheaper than direct options on average. Stopover fares average £86 return via Oakland (OAK), compared with £188 for direct.

  • What is the standard checked bag allowance on flights from Phoenix Sky Harbor Intl Airport to Seattle?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £26–£74 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Phoenix Sky Harbor Intl Airport to Seattle?

    The Boeing 737-800 Passenger/BBJ2 (winglets) family is used most often on this route, operated mainly by Alaska Airlines and Southwest. Other aircraft seen on the route include Embraer 175 variants.

  • Which airports do connecting flights from Phoenix Sky Harbor Intl Airport to Seattle pass through?

    One-stop flights from Phoenix Sky Harbor Intl Airport to Seattle most commonly connect through:

    • Las Vegas Harry Reid Intl (LAS) – 42% of one-stop connections
    • Denver Intl (DEN) – 38% of one-stop connections
    • Los Angeles Los Angeles (LAX) – 9% of one-stop connections
    • Salt Lake City (SLC) – 6% of one-stop connections

    Las Vegas Harry Reid Intl (LAS) handles the largest share of one-stop connections on this route.

  • Can I save money by using flexible dates for flights from Phoenix Sky Harbor Intl Airport to Seattle?

    Yes. Being flexible with your travel dates can save you up to 9% on the Phoenix Sky Harbor Intl Airport to Seattle route. Friday is the cheapest departure day at £182 return on average, while Sunday is the most expensive at £200, a difference of £18. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • At what point is a flight considered delayed on the route from Phoenix Sky Harbor Intl Airport to Seattle?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Phoenix Sky Harbor Intl Airport to Seattle route, 10% of flights were delayed in the past 3 months, with delays averaging 2 hours 31 minutes.

  • How are flight departures from Phoenix Sky Harbor Intl Airport to Seattle spread across the day?

    Morning is the busiest departure period on Phoenix Sky Harbor Intl Airport to Seattle flights, with 48% leaving in that window. Afternoon departures account for 32%, Evening flights for 15%, and Night flights for 5%.

  • What popular places can I visit in Seattle?

    Some of the most popular sights in Seattle are Pier 66, The Westin Seattle, and Seattle Center. These are among the most viewed places in Seattle on KAYAK.

  • What are the earliest and latest flights from Phoenix Sky Harbor Intl Airport to Seattle?

    These are the earliest and latest flight times available from Phoenix Sky Harbor Intl Airport to Seattle:

    • Earliest: departs at 00:20 and lands at 03:34
    • Latest: departs at 23:15 and lands at 02:29.

    The flight takes about 3h 14m.

  • How expensive are last-minute Phoenix Sky Harbor Intl Airport to Seattle flights?

    Last-minute fares on this route (booked within 2 weeks of departure) run 38% above the route average of £188. Book 9 weeks before departure for the lowest fares.

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

    A direct flight from Phoenix Sky Harbor Intl Airport to Seattle takes 3h 14m, covering 1,107 miles.

  • Do I need a passport to fly from Phoenix Sky Harbor Intl Airport to Seattle?

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

  • Have flight prices from Phoenix Sky Harbor Intl Airport to Seattle changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about £142 to £817. That means the highest observed fare was about 6x higher than the lowest one.

  • How are flight prices from Phoenix Sky Harbor Intl Airport to Seattle looking right now?

    One-way fares from Phoenix Sky Harbor Intl Airport to Seattle are currently lower than usual. Average one-way flight prices are about £96, which is 21% below the typical average for this route.

  • How does Delta's on-time performance compare to other airlines on Phoenix Sky Harbor Intl Airport to Seattle flights?

    Delta is slightly above the route average for timely arrivals, while Alaska Airlines has a lower on-time arrival rate. On-time arrival rates on Phoenix Sky Harbor Intl Airport to Seattle flights are:

    • Delta: 93% on time
    • Alaska Airlines: 92% on time
    • American Airlines: 91% on time

    On average, flights on this route are punctual 90% of the time.

  • How do delay rates compare for morning and evening flights from Phoenix Sky Harbor Intl Airport to Seattle?

    Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

  • How much time can I save by choosing a different stopover airport from Phoenix Sky Harbor Intl Airport to Seattle?

    Flying via San Francisco (SFO) gives the shortest average 1-stop total travel time of 6h 22m, compared to 6h 34m via Oakland (OAK) and 10h 46m via Los Angeles Los Angeles (LAX).

  • Which car hire options are available at Seattle/Tacoma Intl Airport (SEA)?

    Seattle/Tacoma Intl Airport (SEA) hosts 5 major car hire companies, with daily rates starting from around £3 for economy cars. Top options include:
    · Fox
    · Europcar
    · Thrifty
    · Budget
    · Dollar

  • How much should I expect to pay for a Phoenix Sky Harbor Intl Airport to Seattle flight?

    Return flights from Phoenix Sky Harbor Intl Airport to Seattle range from £134 to £236, with an average of £188 over the past 12 months. Anything below £134 counts as a good deal.

  • Which airlines offer Wi-Fi on Phoenix Sky Harbor Intl Airport to Seattle flights?

    Four airlines offer in-flight Wi-Fi on Phoenix Sky Harbor Intl Airport to Seattle flights:

    • • Alaska Airlines
    • • Delta
    • • American Airlines
    • • JetBlue

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty programme, while others are paid add-ons priced by flight length.

Your guide to booking Phoenix Sky Harbor Intl Airport to Seattle flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure instead of Sunday. On this route, Friday flights average £182 – about £18 less than Sunday (9% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 9 weeks before you fly. On this route, that window historically saves about 44% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Phoenix Sky Harbor Intl Airport to Seattle trip for January. Fares historically average £86 return in that month – typically £142 less than the most expensive month, which is July (based on the last 12 months).
  • If arriving on time is high on your priority list, Delta is the strongest pick on this route. 93% of Delta flights from Phoenix Sky Harbor Intl Airport to Seattle arrived on time in the past 3 months, slightly above the route's average on-time arrival rate of 90%. When flights on this route do arrive late, the average delay is 2 hours31 minutes, so choosing an airline with strong on-time performance can make a difference on tight schedules.
  • If you have the time, taking a 1-stop flight through Oakland Airport (OAK) can be cheaper than flying direct. The cheapest stopover option averages £86 return on this route – about £103 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Seattle/Tacoma Intl Airport.
    - Seattle Airport Marriott
    - Coast Gateway Hotel
    - Fairfield by Marriott Inn & Suites Seattle Sea-Tac Airport
  • You will be departing from Sky Harbor Phoenix International Airport (PHX) when flying to Seattle from Phoenix, Arizona. The Sky Harbor airport is situated approximately 3 miles east of downtown Phoenix. The airport is ranked as one of the busiest commercial Arizona airports and serves as a base for Southwest Airlines and a hub for American Airlines both of which fly to Seattle.
  • Seattle Tacoma International Airport (SEA) has approximately 100 gates which are strategically located on the airport satellite buildings. Transport to downtown Seattle is available via Line 1 service. One-way fare for adults is about $2.50.
  • The Sky Harbor airport is pet-friendly. This airport has approximately seven reserved areas where pets can stretch, play, relieve themselves, and where you can clean them. Some of the pet areas include The Paw Pad located in terminal 3; Bone Yard located on terminal 4 immediately after the baggage department; and Park and Bark which is at the Economy parking lot.
  • The Sky Harbor has different parking options including terminal 3 parking, West economy parking, East economy, and valet parking. You will part with approximately $34 as a parking fee for valet parking while you will part with approximately $4 per day for all other types of parking. Special parking spaces are also available and they are free of charge.
  • For nursing mothers, Sky Harbor Airport (PHX) offers nursing stations that are located at Terminals 3 and 4. Each room features a sink, baby changing station, soap and paper towel dispensers, electric outlets, and comfortable seating. In addition to the nursing rooms, the airport offers Mamava nursing pods located near Gate 22 and at Checkpoint D after security.

Prefer to fly direct from Phoenix to Seattle?

 
Find which airlines fly direct from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport, which days they fly and book direct flights.

Direct departures

Phoenix Sky Harbor Intl to Seattle/Tacoma Intl

Monday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Tuesday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Wednesday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Thursday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Friday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Saturday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Sunday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Phoenix Sky Harbor Intl

Monday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Tuesday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Wednesday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Thursday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Friday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Saturday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

Sunday

Alaska Airlines,American Airlines,Delta, +1 more

Alaska Airlines,American Airlines, +2 more

See more direct flights

More options for your flight from Phoenix to Seattle

Complete your trip to Seattle with a hotel stay or car hire