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Cheap flights from Seattle to Boston from $1,948

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Boston departing on 2/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Multiple Airlines Logo
7:10 pm - 10:10 amSEA-ACK
12h 00m2 stops
Multiple Airlines Logo
2:45 pm - 11:05 pmACK-SEA
11h 20m2 stops
$1,948Multiple Airlines
Find Deal
Fri, Feb 13 - Sun, Feb 15
Multiple Airlines Logo
5:07 am - 8:40 pmSEA-ACK
12h 33m3 stops
Multiple Airlines Logo
2:45 pm - 11:05 pmACK-SEA
11h 20m2 stops
$2,347Multiple Airlines
Find Deal
Fri, Feb 13 - Sun, Feb 15

momondo 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, momondo users made 832,500 searches. Data last updated October 14, 2025.
Use the filters below to find and compare flights from Seattle to Nantucket that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Fri 2/13

7:10 pm-10:10 am

2 stops12h 00m

Nantucket Memorial

Sun 2/15

2:45 pm-11:05 pm

2 stops11h 20m

$1,948

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Fri 2/13

5:07 am-8:40 pm

3 stops12h 33m

Nantucket Memorial

Sun 2/15

2:45 pm-11:05 pm

2 stops11h 20m

$2,347

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Boston from

How to get the cheapest flight ticket from Seattle to Nantucket

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Nantucket?

The cheapest day to depart on your flight to Nantucket is on a Sunday when prices can be found for as low as $474. This is often the case because there is less demand to fly during this day of the week. On the other hand, Tuesday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $783.

Can stopping save me money on Seattle to Nantucket flights?

You could potentially save up to 47% on your flight if you consider stops on a Seattle to Nantucket flight.

When to book flights from Seattle to Nantucket

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Nantucket according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Nantucket (SEA to ACK) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Nantucket

Direct flights

None
There are no direct flights from Seattle to Nantucket. There are no popular flight routes from Seattle to Nantucket.
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  • How far is Seattle/Tacoma Intl to Nantucket Memorial by plane?

    There are 2561.9 mi between Seattle/Tacoma Intl and Nantucket Memorial. Flights usually cover this in 12h 00m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Nantucket Memorial Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Nantucket Memorial Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Nantucket Memorial Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Nantucket Memorial Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Nantucket Memorial Airport.

  • What documentation or ID do you need to fly to Nantucket Memorial Airport?

    The travel and health documents required for your trip to Nantucket Memorial Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Nantucket Memorial Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Seattle to Nantucket?

Best airlines flying from Seattle to Nantucket

Compare and see reviews for airlines that fly from Seattle to Nantucket with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $465Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Nantucket?

It is quick and easy to find Seattle to Nantucket flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Nantucket that suits you.

Can I find flights from Seattle to Nantucket with flexible booking policies on momondo?

Flights from Seattle to Nantucket with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Seattle to Nantucket?

Once all potential Seattle to Nantucket flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Nantucket right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Nantucket from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
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