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.

What is the cheapest day to fly from Seattle to Nantucket?

Travelers seeking maximum savings on their Seattle to Nantucket flight should consider departing on Sunday evenings when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Nantucket ranges from 1.6 - 4.3 inches per month. January is typically the wettest month, when rainfall can reach 4.3 in. June is typically the driest time to visit Nantucket when rainfall is around 1.6 in.

If weather is an important factor for your trip to Nantucket, 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 February, when temperatures are typically at their lowest (around 32.0 F).

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

When flying from Seattle to Nantucket, 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 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.

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.

$1,124+ Flights from Seattle to Nantucket

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Cheap flight deals from Seattle to Nantucket

Most accurate provider	Expedia 2 stars
Most trusted provider	Expedia 3 stars
Round-trip from	$1,124 (Orbitz)
Popular in	December
Cheapest in	January
Average price	$338

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

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High demand for flights, 4% potential price rise

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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Seattle to Nantucket

Cheapest flights from Seattle to Nantucket
Explore the most affordable flight options available from Seattle to Nantucket. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

Thu 12/411:10 pmSEA - ACK

1 stop8h 00mMultiple Airlines

Mon 12/86:49 amACK - SEA

1 stop8h 46mMultiple Airlines

Deal found 9/26

$1,124

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 September 29, 2025.

Thu 12/411:10 pmSEA - ACK

1 stop8h 00mMultiple Airlines

Mon 12/86:49 amACK - SEA

1 stop8h 46mMultiple Airlines

Deal found 9/26

$1,124

Fly from

Fly to

Route

Depart

Return

Price

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Thu 12/4

11:10 pm-10:10 am

1 stop8h 00m

Nantucket Memorial

Mon 12/8

6:49 am-12:35 pm

1 stop8h 46m

$1,124

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/26

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.

Reviews of airlines servicing Nantucket

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

2,912 reviews

Reviews

1 / 20

10.0

Excellent

JACK,Sep 2025

JFK - MSY

I liked the professional services of the crew. Keep up the good work.

JetBlue

7.2

Good

2,912 reviews

JetBlue

7.2

Good

2,912 reviews

Reviews

1 / 20

10.0

Excellent

JACK,Sep 2025

JFK - MSY

I liked the professional services of the crew. Keep up the good work.

Related info for your journey

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.

See more FAQs

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Alternative routes for Seattle to Nantucket

Complete your trip

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Other flights to Nantucket

Top airline flying from Seattle to Nantucket

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest$465	Average$614	FlexibilityNo cancel fee	On-time62%

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$1,124+ 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Nantucket with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Nantucket

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Nantucket

Cheapest flights from Seattle to NantucketExplore the most affordable flight options available from Seattle to Nantucket. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

Explore the most affordable flight options available from Seattle to Nantucket. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.

Cheapflights Fare Finder

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

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.

Reviews of airlines servicing Nantucket

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.

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?

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

How can I find direct flights from Seattle to Nantucket?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Nantucket

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

Top airline flying from Seattle to Nantucket

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Cheapest flights from Seattle to Nantucket
Explore the most affordable flight options available from Seattle to Nantucket. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 29, 2025.