Cheap Flights from Seattle WA to Phoenix Sky Harbor AZ from $124

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Flight deals from Seattle to Phoenix Sky Harbor

Looking for a cheap last-minute deal or the best round-trip flight from Seattle to Phoenix Sky Harbor? Find the lowest prices on one-way and round-trip tickets right here.

Phoenix.$124 per passenger.Departing Fri, Oct 10, returning Sun, Oct 12.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Seattle / Tacoma International on Fri, Oct 10, arriving in Phoenix Sky Harbor.Inbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Sun, Oct 12, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $124, select.

Phoenix.$124 per passenger.Departing Fri, Sep 5, returning Sun, Sep 7.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Seattle / Tacoma International on Fri, Sep 5, arriving in Phoenix Sky Harbor.Inbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Sun, Sep 7, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $124, select.

Phoenix.$130 per passenger.Departing Thu, Nov 13, returning Sun, Nov 16.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Seattle / Tacoma International on Thu, Nov 13, arriving in Phoenix Sky Harbor.Inbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Sun, Nov 16, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $130, select.

Phoenix.$135 per passenger.Departing Sun, Sep 21, returning Sat, Oct 11.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Seattle / Tacoma International on Sun, Sep 21, arriving in Phoenix Sky Harbor.Inbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Sat, Oct 11, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $135, select.

Phoenix.$136 per passenger.Departing Fri, Aug 29, returning Fri, Sep 5.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Seattle / Tacoma International on Fri, Aug 29, arriving in Phoenix Sky Harbor.Inbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Fri, Sep 5, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $136, select.

Phoenix.$136 per passenger.Departing Fri, Sep 26, returning Fri, Oct 3.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Seattle / Tacoma International on Fri, Sep 26, arriving in Phoenix Sky Harbor.Inbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Fri, Oct 3, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $136, select.

Phoenix.$137 per passenger.Departing Thu, Oct 2, returning Thu, Nov 6.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Seattle / Tacoma International on Thu, Oct 2, arriving in Phoenix Sky Harbor.Inbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Thu, Nov 6, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $137, select.

Phoenix.$142 per passenger.Departing Thu, Aug 28, returning Sun, Aug 31.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Seattle / Tacoma International on Thu, Aug 28, arriving in Phoenix Sky Harbor.Inbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Sun, Aug 31, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $142, select.

Find the cheapest month to fly from Seattle to Phoenix Sky Harbor

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Phoenix Sky Harbor flights are currently cheapest in September.

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Direct flights from Seattle to Phoenix Sky Harbor

Seattle to Phoenix Sky Harbor: Alternative routes

Compare routes from Seattle to Phoenix below. You may find an airport to fly into that's cheaper, faster, or easier than Phoenix Sky Harbor.

Seattle to Phoenix: Flight information

The things to know before you go.

Cheapest flight found	$124
Cheapest month to fly	September
Average flight time	2 hrs, 58 mins
Most popular airline	Alaska Airlines
Average flights per week	495

Finding cheap flights from Seattle to Phoenix Sky Harbor: Frequently asked questions

How much are round-trip flights from Seattle to Phoenix Sky Harbor?

The best price we found for a round-trip flight from Seattle to Phoenix Sky Harbor is $124. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Seattle to Phoenix Sky Harbor?

2 hours and 57 minutes is the average flight time from Seattle to Phoenix Sky Harbor.

Which airlines fly direct from Seattle to Phoenix Sky Harbor?

Alaska Airlines, Hawaiian Airlines and American Airlines fly direct from Seattle to Phoenix Sky Harbor.

How many flights are there a week from Seattle to Phoenix Sky Harbor?

There are 495 flights per week flying from Seattle to Phoenix Sky Harbor, as of August 2025.

When is the cheapest time to fly from Seattle to Phoenix Sky Harbor?

The cheapest month to fly from Seattle to Phoenix Sky Harbor is usually September.

Which upcoming date is cheapest to fly from Seattle to Phoenix Sky Harbor Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Phoenix Sky Harbor Airport on Friday, September 5, 2025.

Can I get a direct flight from Seattle to Phoenix Sky Harbor Airport?

Yes – the average flight time is 2 hours and 57 minutes.

How can I find the best flight deal to Phoenix Sky Harbor?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Phoenix Sky Harbor but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Phoenix?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Phoenix is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with from Seattle to Phoenix Sky Harbor?

The cheapest airline that flies to Phoenix Sky Harbor is Frontier Airlines.

Traveling from Seattle to Phoenix Sky Harbor International Airport (PHX): What you need to know

Your boarding pass to adventure starts at Seattle's main airport, Seattle-Tacoma International Airport (SEA). Check out the options for catching a flight from Seattle to Phoenix Sky Harbor International Airport (PHX) leaving from this terminal.
The average length of a direct Seattle to Phoenix Sky Harbor International Airport flight is 3 hours.
Seattle and Phoenix (where Phoenix Sky Harbor International Airport is located) share the UTC-7 timezone. That means you won't have to adjust your watch when you arrive.
The busiest route is from Seattle-Tacoma International Airport (SEA) to Phoenix Sky Harbor International Airport (PHX), with 132 direct services every week. If you're eager to be on your way, the earliest flight from SEA to PHX is the 5am Southwest Airlines option. If a later flight fits your day better, the last departure is at 9:42pm with Frontier Airlines.
Leave plenty of time to make your flight from Seattle to PHX. As a rule of thumb, arrive two hours before international departures and an hour ahead for domestic flights.
In high season, expect extended wait times and get there earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international trips.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

You can book a direct flight from Seattle to Phoenix Sky Harbor International Airport (PHX) out of Seattle-Tacoma International Airport (SEA).
These are some of the well-known airlines operating direct flights from Seattle to Phoenix Sky Harbor International Airport departing from SEA:
Alaska Airlines is the airline most travelers choose for flights from SEA to PHX.
Delta Air Lines is the most consistent performer for punctuality on this route.
Traveling from central Seattle to SEA takes about 55 minutes by public transport. If you drive, ride-share or take a cab, you'll cover the 23 kilometers in 20 minutes or so, depending on traffic conditions.
Looking for a convenient hotel near Seattle-Tacoma International Airport? If you've booked an early flight from Seattle to Phoenix Sky Harbor International Airport, these stays will have you sleeping moments from check-in:
81.27% of flights departing from Seattle-Tacoma International Airport arrive at their destination on time. Given its strong on-time stats, delays are unlikely when setting off from SEA.

Lake Union Sea Plane Base Airport (LKE)

With public transport, you can travel from central Seattle to LKE in about 25 minutes. The terminal is roughly 3 kilometers away, and making the journey by car will take approximately 10 minutes.
Start your vacation sooner with an extra night away from home. Before catching your Seattle to PHX flight, unwind in one of these hotels near Lake Union Sea Plane Base Airport:

About Phoenix Sky Harbor International Airport (PHX)

The last thing you want is a long journey to your hotel if you're getting in late on a flight from Seattle to Phoenix Sky Harbor International Airport. Make yourself comfy at one of these accommodation options near PHX instead:
Say yes to new adventures by picking up a Phoenix Sky Harbor International Airport rental car. Grab your wheels from Europcar, Dollar or Thrifty to explore Phoenix and beyond.
Booking your vehicle around one week in advance of your Seattle to Phoenix Sky Harbor International Airport flight can help you lock in a great deal.
You'll find PHX at 3400 Sky Harbor Boulevard.

Getting from Phoenix Sky Harbor International Airport (PHX) to central Phoenix

Phoenix Sky Harbor International Airport to the center of Phoenix is roughly 6 kilometers. If you're taking a cab or renting a car, do a little research to make your trip as smooth as possible. Journey times may vary based on traffic conditions and the time of day.
Traveling on public transport will take you roughly 35 minutes.

How to find the cheapest flights from Seattle to Phoenix Sky Harbor International Airport (PHX)

At the moment, $55 is the lowest price we've found for a one-way ticket from Seattle to Phoenix Sky Harbor International Airport. The cheapest price for a return flight is $124. Remember fares may change due to availability at the time of booking.
Don't leave things to the last moment. You're more likely to walk away with cheap flights from Seattle to PHX if you book in advance. Airlines often have some great early bird discounts.
Affordable Seattle to Phoenix Sky Harbor International Airport tickets are easier to find when your dates are flexible. Use the 'Whole month' tool to compare fares across every month and then choose the cheapest day.
Save time looking for cheap plane tickets from Seattle to PHX by creating a Price Alert. We'll send you an email or push notification on the app when a lower fare pops up.
Find a cheap flight from Seattle to Phoenix Sky Harbor International Airport by using filters. Choose your ideal times, number of stops and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Seattle to Phoenix Sky Harbor International Airport (PHX)

July is the busiest month for flights from Seattle to Phoenix Sky Harbor International Airport (PHX). Plan your visit to Phoenix in May if you'd rather be there when it's quieter.
When booking your Seattle to PHX plane ticket, consider what kind of weather works for you. July is the warmest month in Phoenix, with temperatures ranging from 26ºC (79ºF) to 44ºC (111ºF).
January sees temperatures of between 4ºC (39ºF) and 20ºC (68ºF). Look for cheap tickets from Seattle to Phoenix Sky Harbor International Airport around that time if you like cooler conditions.

More about Phoenix

When it comes to looking for somewhere to lay your head, you'll find the best places to stay in Phoenix right here. Browse these hotels after locking in your flight from Seattle to Phoenix Sky Harbor International Airport:
Your visit to Phoenix won't be complete without checking out the sights. Leading attractions you can't miss include Camelback Mountain, Cholla Trailhead Camelback Mountain and Yayoi Kusama Fireflies Infinity Mirror Room.

Explore more of the United States

Phoenix is easy to fall in love with, but there are so many other parts of the United States just waiting to be discovered. About 161 kilometers south-east of Phoenix, a visit to Tucson will keep your itinerary busy. Start with attractions like Saguaro National Park East Unit, Airplane Boneyard and National Parks Conservation.
Around 257 kilometers west of Phoenix, Yuma is another essential stop in the United States. Experience this destination's highlights firsthand at Old Victorian Yuma, Yuma Crossing National Heritage Area and Downtown Yuma.