$385+ Cheap flights from Washington to Nantucket Island
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ACK
Dec 18 — Dec 251
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington to Nantucket Island
Keep the following information in mind while searching for Washington to Nantucket Island flight deals. Data was last updated November 18, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Popular in | December |
Cheapest in | January |
Average price | $369 |
Find flight deals from Washington to Nantucket Island
Cheapest flights from Washington to Nantucket IslandExplore the most affordable flight options available from Washington to Nantucket Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 18, 2025.
Explore the most affordable flight options available from Washington to Nantucket Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 18, 2025.
This Expedia deal was found by Cheapflights users on 11/16. 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.
Mon 12/111:12 pmSEA - ACK
2 stops14h 47mMultiple Airlines
Fri 12/54:00 pmACK - SEA
1 stop9h 30mMultiple Airlines
Deal found 11/16![Multiple Airlines logo]()
$1,117
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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, Cheapflights users made 2,558,603 searches. Data last updated November 18, 2025.
Use the filters below to find and compare flights from Washington to Nantucket Island that are best for you.
Fly from
Washington
Fly to
Nantucket Island
Route
Depart
Return
Price
SeattleNantucket
SEA - ACK
SEAACK
Seattle/Tacoma Intl
Mon 12/1
11:12 pm-4:59 pm
2 stops14h 47m
Nantucket Memorial
Fri 12/5
4:00 pm-10:30 pm
1 stop9h 30m
$1,117
SeattleNantucket
SEA - ACK
SEAACK
Seattle/Tacoma Intl
Mon 12/15
9:45 am-1:50 pm
3 stops25h 05m
$385
Best time to book a flight from Washington to Nantucket Island
Have a flexible travel schedule? Discover the best time to fly to Nantucket Island from Washington 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 Washington to Nantucket Island
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Alternative routes for Washington to Nantucket Island
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Washington to Nantucket Island
Discover the top airline that operate flights from Washington to Nantucket Island. 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 November 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$465 | Average$619 | FlexibilityNo cancel fee | On-time62% |