$250 Cheap flights from Nantucket to Seattle (ACK to SEA)

Popular airlines from Nantucket, MA (ACK-Nantucket Memorial) to Seattle-Tacoma International Airport (SEA)

American Airlines
American Airlines
United
United
Southwest Airlines
Southwest Airlines
Delta
Delta
Frontier Airlines
Frontier Airlines
JetBlue Airways
JetBlue Airways
Alaska Airlines
Alaska Airlines

Cheap Flights from Nantucket to Seattle (ACK-SEA)

Prices were available within the past 7 days and start at $250 for one-way flights and $912 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All deals

One way

Roundtrip

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$912

Roundtrip

found 6 days ago

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$918

Roundtrip

found 6 days ago

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$934

Roundtrip

found 6 days ago

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$940

Roundtrip

found 6 days ago

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$958

Roundtrip

found 6 days ago

Tue, Oct 28 - Sat, Nov 1

ACK

Nantucket

SEA

Seattle

$974

Roundtrip

found 1 day ago

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$977

Roundtrip

found 6 days ago

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$982

Roundtrip

found 6 days ago

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$997

Roundtrip

found 6 days ago

Sat, Oct 25 - Wed, Oct 29

ACK

Nantucket

SEA

Seattle

$1,003

Roundtrip

found 6 days ago

Frequently asked questions

How much does a flight from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA) cost?

Get a cheap one-way flight from $250 or cheap return flight from $912 from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.

What is the cheapest month to fly from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA)?

The cheapest month to fly from ACK to SEA is October, when demand is low. Off-peak season is usually when airlines offer lower prices between these airports.

What is the cheapest airline that flies from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA)?

Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest ACK to SEA flight.

How many flights per day from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA)?

There are no daily nonstop flights from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time.

What day of the week has the most flights from ACK to SEA?

Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.

What is the best time to fly from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA)?

To arrive at Seattle - Tacoma Intl. Airport (SEA) without delays, select a flight that leaves from Nantucket Memorial Airport (ACK) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.

Is it cheaper to buy a plane ticket from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA) last-minute?

Last-minute bookings from ACK to SEA are typically more expensive. To secure the best rates, start looking for flights ahead of time. That being said, if you're flexible with your travel dates, it's possible to land a cheap fare just before your departure.

Is it cheaper to book an ACK to SEA flight and hotel package?

You can save money by booking an ACK to SEA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've selected your ideal flights and accommodations, consider adding extras including car rentals, tours and activities.

Can I cancel or change the date of my flight from Nantucket Memorial Airport (ACK) to Seattle - Tacoma Intl. Airport (SEA)?

Typically, you can modify or cancel your ACK to SEA flight. However, additional charges may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want further details, visit our Customer Service portal.

Travel information

Origin airport	Nantucket Memorial
Destination airport	Seattle - Tacoma Intl.
Roundtrip price	$912
Distance	2566 mi

Book with confidence

Nantucket to Seattle Flights

The cheapest times to fly from Nantucket to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Nantucket to Seattle are during the month of October. You can find some of the cheapest flights from Nantucket to Seattle with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Nantucket to Seattle

Sunday is one of the best days to book for cheap flights from Nantucket to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Nantucket to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Nantucket to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $250 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Nantucket to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Nantucket to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.