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$964+ Cheap flights from Seattle to Nantucket (SEA - ACK)

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ACK
jan 26 — fev 21
seg 1/26
seg 2/2
1 adult, Economy
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Cheap flight deals from Seattle to Nantucket

Best flights from Seattle to Nantucket
Discover carefully curated flight deals from Seattle to Nantucket that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated dezembro 27, 2025.

This Expedia deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 1/97:55 amSEA - ACK
1 stop7h 29mMultiple Airlines
ter 1/132:45 pmACK - SEA
1 stop10h 32mMultiple Airlines
Deal found 12/25$964

Find flight deals from Seattle to Nantucket

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Nantucket (ACK). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated dezembro 27, 2025.

Most accurate provider

Expedia
2 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$964
(Expedia)

Popular in

December

Cheapest in

January

Average price

$536
Provider with most accurate pricing for Seattle/Tacoma Intl-Nantucket Memorial flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Nantucket Memorial flights.
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From Seattle/Tacoma Intl to Nantucket Memorial
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($35 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Nantucket that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated dezembro 27, 2025.
Use the filters below to find and compare flights from Seattle to Nantucket that are best for you.

Fly from

Seattle

Fly to

Nantucket

Route

Depart

Return

Price

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

sex 1/9

7:55 am-6:24 pm

1 stop7h 29m

Nantucket Memorial

ter 1/13

2:45 pm-10:17 pm

1 stop10h 32m

$964

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

  • Most accurate provider: When it comes to deals on Seattle-Nantucket flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Seattle-Nantucket flight deals on Cheapflights vs. Expedia 90-95% of the time. Price accuracy is based on data collected from Seattle-Nantucket flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Nantucket flights, Cheapflights users trust Expedia the most. Expedia 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 Seattle-Nantucket 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 Seattle to Nantucket

Have a flexible travel schedule? Discover the best time to fly to Nantucket from Seattle 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 Seattle to Nantucket

What is the cheapest month to book a flight from Seattle to Nantucket?

Currently, January is the cheapest month in which you can book a flight from Seattle to Nantucket (average of $98). Flying from Seattle to Nantucket in December is currently the most expensive (average of $233). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Nantucket

Get insights into the airlines that provide service to Nantucket. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Nantucket. Reviews last updated dezembro 27, 2025.
Get a feel of what it's like to fly with JetBlue from Seattle to Nantucket by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
JetBlue
7.2
Good
2,899 reviews

Boarding

7.4

Entertainment

7.2

Crew

8.0

Comfort

7.5

Overall

7.2

Food

6.7

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.
JetBlue
7.2
Good
2,899 reviews
JetBlue
7.2
Good
2,899 reviews

Boarding

7.4

Entertainment

7.2

Crew

8.0

Comfort

7.5

Overall

7.2

Food

6.7

Reviews

1 / 20
4.0
Okay

Jeff,Dec 2025

LAX - BOS

We boarded an hour and a half late and the crew was very salty when asked why. Still got no reason other than someone took the intended plane? Won't fly with them again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Nantucket. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Seattle to Nantucket round-trip?

    Currently priced at $465, JetBlue will fly you from Seattle to Nantucket and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip.

  • Can I find deals for flights from Seattle to Nantucket that include hotel bookings?

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

  • How can I find direct flights from Seattle to Nantucket?

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

  • Can I find deals for business class flights from Seattle to Nantucket?

    Yes. Cheapflights offers flight deals from Seattle to Nantucket by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Nantucket?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Nantucket (average of $98). Flying from Seattle to Nantucket in December is currently the most expensive (average of $233). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Top airline flying from Seattle to Nantucket

Discover the top airline that operate flights from Seattle to Nantucket. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated dezembro 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$465Average$619FlexibilityNo cancel feeOn-time62%

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