What is the cheapest airline that flies from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl?

Delta and Southwest are the most popular carriers operating from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl

How many flights depart from Phoenix Sky Harbor Intl Airport to Seattle on average per day?

37 flights are operational daily from Phoenix Sky Harbor Intl Airport to Seattle as of January 2026. The most popular departure time for this route is 1:00PM, with 50% of flights per day taking off at noon.

How often are flights from Phoenix to Seattle delayed?

Historically, on average around 11% of flights between Phoenix and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 139 minutes.

Which airline has the best punctuality record on Phoenix to Seattle flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 6% of their flights experiencing any sort of delay.

What airlines fly to Seattle?

Frontier, Alaska Airlines and Delta are the top three most popular airlines that fly to Seattle from Phoenix Sky Harbor Intl Airport according to our data. Frontier is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

How many flights depart from Phoenix Sky Harbor Intl Airport to Seattle on average per week?

As of January 2026, 259 flights take off from Phoenix Sky Harbor Intl Airport and land in Seattle each week. The most common flight departure day for this route is Thu, with 22% of weekly flights taking off on this day.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

What is the most punctual flight time for Phoenix to Seattle flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

When did momondo last update prices for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport refresh daily.

How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport?

As of January 2026, there are 6 operators available to choose from for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$58 Cheap Flights from Phoenix Sky Harbor Intl Airport to Seattle in 2026

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5:49 pm - 8:03 pm

PHX

SEA

3h 14mnonstop

10:08 pm - 1:05 am

SEA

PHX

2h 57mnonstop

$93Frontier

Sat, Mar 7 - Sun, Mar 15

5:49 pm - 9:03 pm

PHX

SEA

3h 14mnonstop

10:10 pm - 1:07 am

SEA

PHX

2h 57mnonstop

$94Frontier

Fri, Mar 27 - Mon, Mar 30

6:51 pm - 12:01 pm

PHX

SEA

18h 10m

1 stop

1:51 pm - 5:53 pm

SEA

PHX

3h 02mnonstop

$97Frontier

Wed, Feb 25 - Sat, Feb 28

6:00 am - 12:01 pm

PHX

SEA

7h 01m

1 stop

12:00 pm - 4:04 pm

SEA

PHX

3h 04mnonstop

$98Frontier

Sat, Feb 28 - Mon, Mar 2

6:00 am - 8:13 am

PHX

SEA

3h 13mnonstop

12:30 pm - 4:34 pm

SEA

PHX

3h 04mnonstop

$100Frontier

Thu, Feb 12 - Sun, Feb 22

8:15 am - 12:36 pm

PHX

SEA

5h 21m

1 stop

9:06 pm - 1:01 am

SEA

PHX

2h 55mnonstop

$102Frontier

Sat, Feb 28 - Fri, Mar 6

9:30 am - 8:08 pm

PHX

SEA

11h 38m

1 stop

9:08 pm - 1:03 am

SEA

PHX

2h 55mnonstop

$103Frontier

Thu, Feb 26 - Sat, Mar 7

8:00 am - 10:17 am

PHX

SEA

3h 17mnonstop

12:00 pm - 4:04 pm

SEA

PHX

3h 04mnonstop

$104Frontier

Sat, Feb 28 - Mon, Mar 2

6:55 am - 8:20 pm

PHX

SEA

13h 25m

1 stop

10:08 pm - 1:05 am

SEA

PHX

2h 57mnonstop

$105Frontier

Thu, Mar 26 - Tue, Mar 31

9:30 am - 8:08 pm

PHX

SEA

11h 38m

1 stop

10:08 pm - 1:05 am

SEA

PHX

2h 57mnonstop

$106Frontier

Thu, Mar 5 - Mon, Mar 9

Frontier flights from Phoenix Sky Harbor Intl Airport to Seattle

Our best Frontier deals on Phoenix Sky Harbor Intl Airport to Seattle flight tickets

Frontier

Mar 7

PHX5:49 pmPhoenix Sky Harbor Intl

3h 14m

SEA8:03 pmSeattle/Tacoma Intl

Mar 15

SEA10:08 pmSeattle/Tacoma Intl

2h 57m

PHX1:05 amPhoenix Sky Harbor Intl

$93

Frontier

Mar 27

PHX5:49 pmPhoenix Sky Harbor Intl

3h 14m

SEA9:03 pmSeattle/Tacoma Intl

Mar 30

SEA10:10 pmSeattle/Tacoma Intl

2h 57m

PHX1:07 amPhoenix Sky Harbor Intl

$94

Frontier

Feb 25

PHX6:51 pmPhoenix Sky Harbor Intl

18h 10m

1 stop

SEA12:01 pmSeattle/Tacoma Intl

Feb 28

SEA1:51 pmSeattle/Tacoma Intl

3h 02m

PHX5:53 pmPhoenix Sky Harbor Intl

$97

Southwest flights from Phoenix Sky Harbor Intl Airport to Seattle

Our best Southwest deals on Phoenix Sky Harbor Intl Airport to Seattle flight tickets

Southwest

Feb 11

PHX1:20 pmPhoenix Sky Harbor Intl

6h 15m

2 stops

SEA6:35 pmSeattle/Tacoma Intl

Mar 7

SEA1:20 pmSeattle/Tacoma Intl

2h 50m

PHX5:10 pmPhoenix Sky Harbor Intl

$223

Southwest

Feb 12

PHX5:55 pmPhoenix Sky Harbor Intl

3h 10m

SEA8:05 pmSeattle/Tacoma Intl

Feb 22

SEA5:15 amSeattle/Tacoma Intl

2h 45m

PHX9:00 amPhoenix Sky Harbor Intl

$227

Southwest

Feb 10

PHX8:55 pmPhoenix Sky Harbor Intl

3h 10m

SEA11:05 pmSeattle/Tacoma Intl

Feb 11

SEA9:30 amSeattle/Tacoma Intl

9h 25m

2 stops

PHX7:55 pmPhoenix Sky Harbor Intl

$262

momondo Fare Finder

Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 3/7

5:49 pm-8:03 pm

Nonstop3h 14m

Seattle/Tacoma Intl

Sun 3/15

10:08 pm-1:05 am

Nonstop2h 57m

$93

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Fri 3/27

5:49 pm-9:03 pm

Nonstop3h 14m

Seattle/Tacoma Intl

Mon 3/30

10:10 pm-1:07 am

Nonstop2h 57m

$94

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Wed 2/25

6:51 pm-12:01 pm

1 stop18h 10m

Seattle/Tacoma Intl

Sat 2/28

1:51 pm-5:53 pm

Nonstop3h 02m

$97

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 2/28

6:00 am-12:01 pm

1 stop7h 01m

Seattle/Tacoma Intl

Mon 3/2

12:00 pm-4:04 pm

Nonstop3h 04m

$98

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 2/12

6:00 am-8:13 am

Nonstop3h 13m

Seattle/Tacoma Intl

Sun 2/22

12:30 pm-4:34 pm

Nonstop3h 04m

$100

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 2/28

8:15 am-12:36 pm

1 stop5h 21m

Seattle/Tacoma Intl

Fri 3/6

9:06 pm-1:01 am

Nonstop2h 55m

$102

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 2/26

9:30 am-8:08 pm

1 stop11h 38m

Seattle/Tacoma Intl

Sat 3/7

9:08 pm-1:03 am

Nonstop2h 55m

$103

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Sat 2/28

8:00 am-10:17 am

Nonstop3h 17m

Seattle/Tacoma Intl

Mon 3/2

12:00 pm-4:04 pm

Nonstop3h 04m

$104

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 3/26

6:55 am-8:20 pm

1 stop13h 25m

Seattle/Tacoma Intl

Tue 3/31

10:08 pm-1:05 am

Nonstop2h 57m

$105

PhoenixSeattle

PHX - SEA

PHXSEA

Phoenix Sky Harbor Intl

Thu 3/5

9:30 am-8:08 pm

1 stop11h 38m

Seattle/Tacoma Intl

Mon 3/9

10:08 pm-1:05 am

Nonstop2h 57m

$106

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How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

Other information

What is the cheapest month to fly to Seattle?

In general, February is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $157. If you don’t want to visit Seattle in February, then you should wait until January to fly from Phoenix Sky Harbor Intl Airport, when ticket prices are also cheap, with an average price of $167.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Phoenix Sky Harbor Intl Airport is on a Friday. momondo users have found tickets for Friday departures for as low as $267. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Phoenix Sky Harbor Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $451.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Phoenix Sky Harbor Intl Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as $230 when looking at flights departing at noon. Flights to Seattle are more costly in the evening, with an average ticket price of $371. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Phoenix Sky Harbor Intl to Seattle/Tacoma Intl flight route?

Fly from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl for the best Phoenix Sky Harbor Intl - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $188 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Phoenix Sky Harbor Intl Airport for as low as $165 on momondo.

What cabin class options are available on Phoenix Sky Harbor Intl to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Phoenix Sky Harbor Intl to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Phoenix Sky Harbor Intl Airport to Seattle flight prices changed over time?

As of January 2026, prices for Phoenix Sky Harbor Intl Airport to Seattle flights are approximately 2% more expensive when compared to flights at the same time last year.

When to book flights from Phoenix Sky Harbor Intl Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Phoenix Sky Harbor Intl Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Phoenix Sky Harbor Intl Airport to Seattle (PHX to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phoenix Sky Harbor Intl Airport to Seattle

Best Price Found	$94
Fastest flight time	3h 00m
Direct flights	Every day
Airports in Seattle	1 airport

The best one-way flight to Seattle from Phoenix Sky Harbor Intl Airport in the past 72 hours is $94. The best round-trip flight deal from Phoenix Sky Harbor Intl Airport to Seattle found on momondo in the last 72 hours is $149.

The fastest flight from Phoenix Sky Harbor Intl Airport to Seattle takes 3h 00m

Direct flights go from Phoenix Sky Harbor Intl Airport to Seattle every day.

There is 1 airport in Seattle. From Phoenix Sky Harbor Intl Airport there are direct flights to Seattle/Tacoma Intl (SEA).

Search flight deals

How far is Phoenix Sky Harbor Intl to Seattle/Tacoma Intl by plane?
Phoenix Sky Harbor Intl and Seattle/Tacoma Intl are 1117.0 mi apart from one another. Typically, this will take 3h 00m by plane in normal conditions.
When did momondo last update prices for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport?
As of January 2026, there are 6 operators available to choose from for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Phoenix Sky Harbor Intl Airport to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Phoenix Sky Harbor Intl Airport to Seattle is Boeing 737-800 Passenger/BBJ2 (winglets) (20.74% of total bookings). The next most popular plane models are Embraer 175 (14.91%), Boeing 737 MAX 8 (9.82%), and Airbus A320neo (9.24%).
What is the most popular airline from Phoenix Sky Harbor Intl Airport to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Phoenix Sky Harbor Intl Airport to Seattle is Frontier (32% of total bookings). The next most popular airlines are Delta (28%), Alaska Airlines (27%), and Hawaiian Airlines (6%).

Best airlines flying from Phoenix Sky Harbor Intl Airport to Seattle

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $52	Free Cancellation	Rating 5.7 3,056 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $83	Free Cancellation	Rating 7.8 2,830 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $97	Free Cancellation	Rating 7.9 8,127 reviews	Search Delta flights
Alaska Airlines	PriceFrom $109	Free Cancellation	Rating 8.0 11,808 reviews	Search Alaska Airlines flights
Southwest	PriceFrom $116	Free Cancellation	Rating 8.0 4,267 reviews	Search Southwest flights
American Airlines	PriceFrom $117	Free Cancellation	Rating 7.2 11,206 reviews	Search American Airlines flights

Alaska Airlines Flights From Phoenix Sky Harbor Intl Airport to Seattle
The lowest priced Alaska Airlines flight from Phoenix Sky Harbor Intl Airport to Seattle from the last 72 hours was $109. Generally, Alaska Airlines has 21 flights on this route every week with an average price of $215. Alaska Airlines is rated 8.0/10 by our users.
Southwest Flights From Phoenix Sky Harbor Intl Airport to Seattle
Southwest (8.0/10 from 4,267 reviews) operates around 15 flights from Phoenix Sky Harbor Intl Airport to Seattle in any given week. The average Southwest airfare for this route is around $207, with deals from around $116 rare but found on momondo. Referenced prices are for round-trip Phoenix Sky Harbor Intl Airport to Seattle flight searches in the last 72 hours.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Marysville

Puyallup

Redmond

Cle Elum

Tukwila

Lakewood

Federal Way

Centralia

Westport

Kirkland

Fife

Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from Phoenix to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Phoenix to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Phoenix to Seattle with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Phoenix to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from Phoenix to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Phoenix.

I’m not ready to book a flight from Phoenix to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Phoenix to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Phoenix Sky Harbor Intl Airport to Seattle from $58

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Frontier flights from Phoenix Sky Harbor Intl Airport to Seattle

Our best Frontier deals on Phoenix Sky Harbor Intl Airport to Seattle flight tickets

Southwest flights from Phoenix Sky Harbor Intl Airport to Seattle

Our best Southwest deals on Phoenix Sky Harbor Intl Airport to Seattle flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Seattle that are best for you.

See travel insights to Seattle from

How to get the cheapest flight ticket from Phoenix Sky Harbor Intl Airport to Seattle

What is the cheapest month to fly to Seattle?

What is the cheapest day to depart on your flight to Seattle?

What is the cheapest time of day to depart on your flight to Seattle?

What is the cheapest Phoenix Sky Harbor Intl to Seattle/Tacoma Intl flight route?

Fly from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl for the best Phoenix Sky Harbor Intl - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

What cabin class options are available on Phoenix Sky Harbor Intl to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Phoenix Sky Harbor Intl to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Phoenix Sky Harbor Intl Airport to Seattle flight prices changed over time?

As of January 2026, prices for Phoenix Sky Harbor Intl Airport to Seattle flights are approximately 2% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl?

Delta and Southwest are the most popular carriers operating from Phoenix Sky Harbor Intl to Seattle/Tacoma Intl

What airlines fly to Seattle?

How often are flights from Phoenix to Seattle delayed?

Historically, on average around 11% of flights between Phoenix and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 139 minutes.

What is the most punctual flight time for Phoenix to Seattle flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Phoenix to Seattle flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 6% of their flights experiencing any sort of delay.

How many flights depart from Phoenix Sky Harbor Intl Airport to Seattle on average per day?

37 flights are operational daily from Phoenix Sky Harbor Intl Airport to Seattle as of January 2026. The most popular departure time for this route is 1:00PM, with 50% of flights per day taking off at noon.

How many flights depart from Phoenix Sky Harbor Intl Airport to Seattle on average per week?

As of January 2026, 259 flights take off from Phoenix Sky Harbor Intl Airport and land in Seattle each week. The most common flight departure day for this route is Thu, with 22% of weekly flights taking off on this day.

When to book flights from Phoenix Sky Harbor Intl Airport to Seattle

Cheap Phoenix Sky Harbor Intl Airport to Seattle (PHX to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phoenix Sky Harbor Intl Airport to Seattle

Best Price Found

Fastest flight time

Direct flights

Airports in Seattle

How far is Phoenix Sky Harbor Intl to Seattle/Tacoma Intl by plane?

When did momondo last update prices for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport?

How many operators does momondo search for flights from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport?

How old do you have to be to fly from Phoenix Sky Harbor Intl Airport to Seattle/Tacoma Intl Airport?

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

What is the most popular plane model from Phoenix Sky Harbor Intl Airport to Seattle?

What is the most popular airline from Phoenix Sky Harbor Intl Airport to Seattle?

Best airlines flying from Phoenix Sky Harbor Intl Airport to Seattle

Compare and see reviews for airlines that fly from Phoenix Sky Harbor Intl Airport to Seattle with momondo

Alaska Airlines Flights From Phoenix Sky Harbor Intl Airport to Seattle

Southwest Flights From Phoenix Sky Harbor Intl Airport to Seattle

Traveling to a place near Seattle?

Why use momondo?

Why should I use momondo to find a flight deal from Phoenix to Seattle?

Can I find flights from Phoenix to Seattle with flexible booking policies on momondo?

How can momondo help me find flights from Phoenix to Seattle?

I’m not ready to book a flight from Phoenix to Seattle right now. Can momondo alert me if prices change?

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Washington