What is the cheapest airline to fly from New Haven to Seattle round-trip?

Currently priced at $257, Alaska Airlines will fly you from New Haven to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip.

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 HVN to SEA?

When flying from New Haven to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on New Haven-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New Haven-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New Haven-Seattle flight searches over the past month and is updated monthly.

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

Can I find deals for flights from New Haven to Seattle that include hotel bookings?

Yes. In addition to deals on New Haven to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from New Haven to Seattle?

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

Can I find deals for business class flights from New Haven to Seattle?

Yes. Cheapflights offers flight deals from New Haven 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.

$233+ Cheap Flights from New Haven to Seattle

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Cheap flight deals from New Haven to Seattle

One-way

One-way flights from New Haven to Seattle
Search for one-way flight options from New Haven to Seattle. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.

Sun 10/257:54 pm -

3 stops42h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/11

$233

Find flight deals from New Haven to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	August
Cheapest in	January
Average price	$427

Provider with most accurate pricing for Tweed-New Haven-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Tweed-New Haven-Seattle/Tacoma Intl flights.

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($73 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

New HavenSeattle

HVN Tweed-New Haven - SEA Seattle/Tacoma Intl

HVNSEA

Tweed-New Haven

Sun 10/25

7:54 pm-10:59 am

3 stops42h 05m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-3:00 am

Nonstop0h 00m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Sorted by cheapest first

Compare providers for flights from New Haven to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from New Haven to Seattle in September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	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 New Haven-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New Haven-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New Haven-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on New Haven-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 New Haven-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 New Haven to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from New Haven with our price prediction graph.

HVN-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 from New Haven 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

7.9

Good

12,931 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Alaska Airlines

7.9

Good

12,931 reviews

Alaska Airlines

7.9

Good

12,931 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Jun 2026

RDU - SEA

There was almost a 2 hour delay after arriving before our next flight. Also my husband needed a wheelchair and it seemed hard to get help.

Related info for your journey

What is the cheapest airline to fly from New Haven to Seattle round-trip?
Currently priced at $257, Alaska Airlines will fly you from New Haven to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip.
Can I find deals for flights from New Haven to Seattle that include hotel bookings?
Yes. In addition to deals on New Haven to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from New Haven to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Haven to Seattle.
Can I find deals for business class flights from New Haven to Seattle?
Yes. Cheapflights offers flight deals from New Haven 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

SeaTac

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Olympia

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Ellensburg

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Fife

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Top airline flying from New Haven to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$257	Average$467	FlexibilityNo cancel fee	On-time75%

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$233+ Cheap flights from New Haven to Seattle (HVN - SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from New Haven to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from New Haven to Seattle

One-way flights from New Haven to SeattleSearch for one-way flight options from New Haven to Seattle. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.

Search for one-way flight options from New Haven to Seattle. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.

Find flight deals from New Haven to Seattle

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from New Haven to Seattle that are best for you.

Compare providers for flights from New Haven 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 New Haven to Seattle in September.

Best time to book a flight from New Haven to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from New Haven with our price prediction graph.

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with Alaska Airlines from New Haven 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

What is the cheapest airline to fly from New Haven to Seattle round-trip?

Can I find deals for flights from New Haven to Seattle that include hotel bookings?

How can I find direct flights from New Haven to Seattle?

Can I find deals for business class flights from New Haven 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 New Haven 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 New Haven to Seattle by cabin class

Find flights from New Haven to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

New Haven and Seattle flights

Browse other New Haven and Seattle flight options. Last updated on September 16, 2026.

Other flights from New Haven

Browse through other flights departing from New Haven. Flights are based on user searches made on Cheapflights and were last updated on September 16, 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 September 16, 2026.

Top airline flying from New Haven to Seattle

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One-way flights from New Haven to Seattle
Search for one-way flight options from New Haven to Seattle. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.