What are the cheapest airlines flying from Phoenix-Mesa Gateway Airport to Seattle round-trip?

Alaska Airlines, at $97, was found to be the cheapest airline from Phoenix-Mesa Gateway Airport to Seattle. An alternate airline flying to your destination would be Frontier. You may be able to fly from Phoenix-Mesa Gateway Airport to Seattle for 51% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from AZA to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Phoenix-Mesa Gateway Airport to Seattle as you normally would.

Most accurate provider : When it comes to deals on Phoenix-Mesa Gateway 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-Mesa Gateway Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix-Mesa Gateway Airport-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Phoenix-Mesa Gateway 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-Mesa Gateway Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly into for flights to Seattle from Phoenix-Mesa Gateway?

If you book a flight to Seattle from Phoenix-Mesa Gateway, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Phoenix-Mesa Gateway to Seattle/Tacoma Intl per day from 2 different airlines.

Can I find deals for flights from Phoenix-Mesa Gateway to Seattle that include hotel bookings?

Yes. In addition to deals on Phoenix-Mesa Gateway to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Phoenix-Mesa Gateway to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phoenix-Mesa Gateway to Seattle.

Can I find deals for business class flights from Phoenix-Mesa Gateway to Seattle?

Yes. Cheapflights offers flight deals from Phoenix-Mesa Gateway 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.

Find Flights from Phoenix-Mesa Gateway Airport to Seattle

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Phoenix-Mesa Gateway 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.

Find flight deals from Phoenix-Mesa Gateway to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	November
Cheapest in	May
Average price	$183

Provider with most accurate pricing for Phoenix-Mesa Gateway-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Phoenix-Mesa Gateway-Seattle/Tacoma Intl flights.

Search Deals

Highest demand for flights based on searches. 15% potential increase in price ($37 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2026

Search Deals

Compare providers for flights from Phoenix-Mesa Gateway to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Phoenix-Mesa Gateway to Seattle in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Phoenix-Mesa Gateway 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-Mesa Gateway Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix-Mesa Gateway Airport-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Phoenix-Mesa Gateway 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-Mesa Gateway 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 Phoenix-Mesa Gateway to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Phoenix-Mesa Gateway with our price prediction graph.

AZA-SEA

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.

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with Alaska Airlines and Frontier from Phoenix-Mesa Gateway Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

11,835 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Alaska Airlines

8.0

Very good

11,835 reviews

Alaska Airlines

8.0

Very good

11,835 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Frontier

5.7

Fair

3,051 reviews

Alaska Airlines

8.0

Very good

11,835 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

What airport do you fly into for flights to Seattle from Phoenix-Mesa Gateway?
If you book a flight to Seattle from Phoenix-Mesa Gateway, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Phoenix-Mesa Gateway to Seattle/Tacoma Intl per day from 2 different airlines.
What are the cheapest airlines flying from Phoenix-Mesa Gateway Airport to Seattle round-trip?
Alaska Airlines, at $97, was found to be the cheapest airline from Phoenix-Mesa Gateway Airport to Seattle. An alternate airline flying to your destination would be Frontier. You may be able to fly from Phoenix-Mesa Gateway Airport to Seattle for 51% less than the average price by searching for these airlines.
Can I find deals for flights from Phoenix-Mesa Gateway to Seattle that include hotel bookings?
Yes. In addition to deals on Phoenix-Mesa Gateway to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Phoenix-Mesa Gateway to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Phoenix-Mesa Gateway to Seattle.
Can I find deals for business class flights from Phoenix-Mesa Gateway to Seattle?
Yes. Cheapflights offers flight deals from Phoenix-Mesa Gateway 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.

See more FAQs

Tacoma

SeaTac

Lakewood

Ocean Shores

Olympia

Lynnwood

Edmonds

Lacey

Renton

Puyallup

Kirkland

Kent

Tukwila

Fife

Aberdeen

Shoreline

Marysville

Centralia

Federal Way

Chehalis

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Flights by cabin class

Other flight options

Other flights from Phoenix-Mesa Gateway

Popular flights

Seattle flight routes

Alternative routes for Phoenix-Mesa Gateway to Seattle

Sky Harbor Intl to Seattle flights

Sky Harbor Intl to Portland flights

Sky Harbor Intl to Everett flights

Sky Harbor Intl to Spokane flights

Sky Harbor Intl to Pasco flights

Sky Harbor Intl to Pullman flights

Sky Harbor Intl to Bellingham flights

Sky Harbor Intl to Yakima flights

Sky Harbor Intl to Walla Walla flights

Sky Harbor Intl to Wenatchee flights

Top 2 airlines flying from Phoenix-Mesa Gateway to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$97	Average$237	FlexibilityNo cancel fee	On-time75%
Frontier	Cheapest$98	Average$144	FlexibilityNo cancel fee	On-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Phoenix-Mesa Gateway (AZA) to Seattle (SEA)

Find cheap flights from Phoenix-Mesa Gateway to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Phoenix-Mesa Gateway to Seattle

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Compare providers for flights from Phoenix-Mesa Gateway 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 Phoenix-Mesa Gateway to Seattle in February.

Best time to book a flight from Phoenix-Mesa Gateway to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Phoenix-Mesa Gateway with our price prediction graph.

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with Alaska Airlines and Frontier from Phoenix-Mesa Gateway Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Phoenix-Mesa Gateway 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-Mesa Gateway?

What are the cheapest airlines flying from Phoenix-Mesa Gateway Airport to Seattle round-trip?

Can I find deals for flights from Phoenix-Mesa Gateway to Seattle that include hotel bookings?

How can I find direct flights from Phoenix-Mesa Gateway to Seattle?

Can I find deals for business class flights from Phoenix-Mesa Gateway to Seattle?

Traveling to a place near Seattle?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Phoenix-Mesa Gateway to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Phoenix-Mesa Gateway to Seattle by cabin class

Find flights from Phoenix-Mesa Gateway to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Phoenix-Mesa Gateway and Seattle flights

Browse other Phoenix-Mesa Gateway and Seattle flight options. Last updated on February 3, 2026.

Other flights from Phoenix-Mesa Gateway

Browse through other flights departing from Phoenix-Mesa Gateway. Flights are based on user searches made on Cheapflights and were last updated on February 3, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Seattle

Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 3, 2026.

Top 2 airlines flying from Phoenix-Mesa Gateway to Seattle

100% Free

Book with Flexibility

Travel Smart