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 49% 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).

Most accurate provider : When it comes to deals on Phoenix-Mesa Gateway Airport-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Phoenix-Mesa Gateway Airport-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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Find flight deals from Phoenix-Mesa Gateway to Seattle

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Popular in	November
Cheapest in	May
Average price	$217

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

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

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Highest demand for flights based on searches. 18% potential increase in price ($43 potential increase over avg. RT price).

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Cheapest flight prices on average. 7% potential price decrease ($14 potential savings vs. average RT price).

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Average for round-trip flights in December 2025

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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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Phoenix-Mesa Gateway Airport-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

Cheapflights Insights

Everything you need to know about your flight from Phoenix-Mesa Gateway Airport to Seattle

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

When flying from Phoenix-Mesa Gateway Airport to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 51% versus a flight in the morning.

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

11,470 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

11,470 reviews

Alaska Airlines

8.0

Very good

11,470 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

5.8

Fair

3,082 reviews

Alaska Airlines

8.0

Very good

11,470 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 49% 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.

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Other flights to Seattle

Top 2 airlines flying from Phoenix-Mesa Gateway to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$97	Average$212	FlexibilityNo cancel fee	On-time75%
Frontier	Cheapest$98	Average$144	FlexibilityNo cancel fee	On-time62%

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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 December.

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.

Cheapflights Insights

Everything you need to know about your flight from Phoenix-Mesa Gateway Airport to Seattle

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

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?

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Alternative routes for Phoenix-Mesa Gateway to Seattle

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Top 2 airlines flying from Phoenix-Mesa Gateway to Seattle

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