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Cheap flights from Seattle to Nantucket Island from $677

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 Nantucket Island departing on 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Nantucket Island

Cheap round-trip flights

JetBlue Logo
11:56 pm - 1:15 pmSEA-ACK
10h 19m1 stop
JetBlue Logo
4:10 pm - 10:21 pmACK-SEA
9h 11m1 stop
$677JetBlue
Find Deal
Mon, Oct 6 - Sun, Oct 12
Logo
6:10 pm - 7:56 amSEA-ACK
34h 46m3 stops
Logo
5:23 pm - 5:19 pmACK-SEA
26h 56m3 stops
$931
Find Deal
Mon, Oct 6 - Sun, Oct 12
Logo
6:10 pm - 3:05 pmSEA-ACK
17h 55m2 stops
Logo
5:23 pm - 5:19 pmACK-SEA
26h 56m3 stops
$985
Find Deal
Mon, Oct 6 - Sun, Oct 12
Logo
6:10 pm - 4:33 pmSEA-ACK
19h 23m2 stops
Logo
8:35 am - 5:19 pmACK-SEA
11h 44m2 stops
$1,246
Find Deal
Mon, Oct 6 - Sun, Oct 12
Logo
11:15 pm - 10:00 amSEA-ACK
7h 45m1 stop
Logo
5:10 pm - 9:10 amACK-SEA
19h 00m2 stops
$1,322
Find Deal
Mon, Oct 6 - Sun, Oct 12
Logo
11:15 pm - 2:36 pmSEA-ACK
12h 21m1 stop
Logo
5:10 pm - 9:10 amACK-SEA
19h 00m2 stops
$1,402
Find Deal
Tue, Oct 7 - Sun, Oct 12

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Nantucket Island 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 August 28, 2025.
Use the filters below to find and compare flights from Seattle to Nantucket Island that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Mon 10/6

11:56 pm-1:15 pm

1 stop10h 19m

Nantucket Memorial

Sun 10/12

4:10 pm-10:21 pm

1 stop9h 11m

$677

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Mon 10/6

6:10 pm-7:56 am

3 stops34h 46m

Nantucket Memorial

Sun 10/12

5:23 pm-5:19 pm

3 stops26h 56m

$931

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Mon 10/6

6:10 pm-3:05 pm

2 stops17h 55m

Nantucket Memorial

Sun 10/12

5:23 pm-5:19 pm

3 stops26h 56m

$985

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Mon 10/6

6:10 pm-4:33 pm

2 stops19h 23m

Nantucket Memorial

Sun 10/12

8:35 am-5:19 pm

2 stops11h 44m

$1,246

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Mon 10/6

11:15 pm-10:00 am

1 stop7h 45m

Nantucket Memorial

Sun 10/12

5:10 pm-9:10 am

2 stops19h 00m

$1,322

SeattleNantucket

SEA - ACK

SEAACK

Seattle/Tacoma Intl

Tue 10/7

11:15 pm-2:36 pm

1 stop12h 21m

Nantucket Memorial

Sun 10/12

5:10 pm-9:10 am

2 stops19h 00m

$1,402

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Nantucket Island from

How to get the cheapest flight ticket from Seattle to Nantucket Island

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 month to fly to Nantucket Island?

The month of March is another great option to travel to Nantucket Island, with average flight prices from Seattle averaging around $267.

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

The cheapest day to depart from Seattle to Nantucket Island is on a Wednesday. Travelers who choose to depart for Nantucket Island on a Wednesday will often find tickets for as low as $340. Flights from Seattle to Nantucket Island on a Sunday will generally be more expensive and average around $418. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

The cheapest time of day to fly to Nantucket Island is in the afternoon when flights can be purchased for as low as $329. Flights in the morning are often more expensive with an average ticket price of $403.

How far in advance should I book a flight to Nantucket Island?

You are more likely to see cheaper flights to Nantucket Island from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Nantucket Island for around $348 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Nantucket Island from Seattle for as low as $302 on momondo.

Can stopping save me money on Seattle to Nantucket Island flights?

You could potentially save up to 8% on your flight if you consider stops on a Seattle to Nantucket Island flight.

Cheap Seattle to Nantucket Island flight deals and tips

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

Direct flights

None
There are no direct flights from Seattle to Nantucket Island. There are no popular flight routes from Seattle to Nantucket Island.
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  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Nantucket Island?

    Prices for flights from Seattle/Tacoma Intl Airport to Nantucket Island are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Nantucket Island.

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

    The necessary travel and health documents for your Nantucket Island trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Nantucket Island?

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Nantucket Island. momondo saves you time and could save you money on your trip.

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

Flights from Seattle to Nantucket Island 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 Island?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Nantucket Island.

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

If you are simply researching potential flights to Nantucket Island, momondo offers a useful price alert feature which will track prices for flights to Nantucket Island from Seattle and alert you when they change.

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