Find cheap flights from Seattle to Nantucket Island

1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Nantucket Island

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Nantucket Island, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Nantucket Island, as well as popular online travel agencies
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KAYAK's insights & trends for Seattle to Nantucket Island flights

Get data-powered insights and trends into flights from Seattle to Nantucket Island to help you find the cheapest flights, the best time to fly and much more.

Can I save money by flying with a layover from Seattle to Nantucket Island?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $413, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Seattle to Nantucket Island?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Nantucket Island, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Nantucket Island is March, when tickets cost $287 (return) on average. On the other hand, the most expensive months are December and August, when the average cost of round-trip tickets is $537 and $423 respectively.

What’s the cheapest day of the week to fly from Seattle to Nantucket Island?

The average price of all round-trip flights from Seattle to Nantucket Island clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Seattle to Nantucket Island, look for departures on Wednesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Nantucket Island, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Nantucket Island, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Nantucket Island, you should book around 3 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

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Good to know

Low seasonJanuary
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 6% increase in price.

FAQs - booking Nantucket Island flights

  • How does KAYAK find such low prices on flights from Seattle to Nantucket Island?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Nantucket Island.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Nantucket Island?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Nantucket Island is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Nantucket Island?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Seattle to Nantucket Island with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Nantucket Island?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Seattle to Nantucket Island up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Nantucket Island?

    The cheapest time of day to fly to Nantucket Island is generally in the afternoon, when round-trip flights cost $232 on average. Morning departures are around 17% more expensive than evening flights, on average. The most expensive time of day to fly to Nantucket Island is generally in the morning, which is peak travel time and where the average cost of a ticket is $427.

Reviews of the top airline flying from Seattle to Nantucket Island

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Nantucket Island. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Nantucket Island? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
JetBlueOverall score based on 2891 reviews
7.2Entertainment
6.6Food
8.0Crew
7.4Boarding
7.5Comfort
Airline reviews

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

2.0 MediocreAnonymous, Jan 2026
JFK - BNA
Read more JetBlue reviews

Terrible. They canceled our early morning flight after midnight on the day of and had no available flights to rebook my family on for the next 72 hours. Yet they still had other flights that were not cancelled from JFK so it couldn’t be based on the weather. It felt like they canceled the flight based on it not being profitable enough for them. I am not interested in traveling with the again. The absolute worse customer service and lack of accountability.

Horribly rude check in at airport, worst in 25 years of flying. All over a simple issue they could have googled to resolve.

First time flying with JetBlue and never again. I went to the counter to request meet and assist because I'm 74 and my wife is 79. I walk with a cane and my wife is handicapped and has her own wheel chair. I told the agent that my wife and luggage was at the entrance door. The ticketing agent said to me that they don't offer meet and assist. I need to bring them our luggage and then go back and get my wife in order to get my boarding pass. As I went back to get my luggage a Southwest agent along with a TSA agent recognized the situation and came over and took my wife and luggage to the JetBlue ticketing counter alongside the line and told the JetBlue agent to issue to take our luggage as soon as they could.

1) No pilot available for 1 hour 2) no room for most passengers careyon in overhead—-> stowed below 3) when we landed we had to wait 45 min. Before docking at gate as gate was not ready

It was good. I prefer JB over other airlines.I just wish we had headphones for the films, but other than that - good.

we were delayed because of some safety check that wasn't done or available

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Everything you need to know for your flight to Nantucket Island

Information on your arrival and departure airports

Seattle (SEA)