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$142+ Cheap flights from New Windsor to Seattle (SWF - SEA)

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.
SWF — SEA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Stewart to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Stewart (SWF) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Popular in

December

Cheapest in

September

Average price

$319
Provider with most accurate pricing for New Windsor Stewart-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for New Windsor Stewart-Seattle/Tacoma Intl flights.
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
Search Deals

Find flight deals from Stewart to Seattle

One-way flights from Stewart to Seattle
Search for one-way flight options from Stewart to Seattle. Find affordable one-way fares based on user searches. Data last updated October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:30 pmSWF - SEA
2 stops55h 40mMultiple Airlines
Deal found 10/28$142
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/209:45 amSWF - SEA
2 stops51h 26mMultiple Airlines
Deal found 10/28$191
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:11 pmSWF - SEA
3 stops41h 00mMultiple Airlines
Deal found 10/28$237
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:10 pmSWF - SEA
2 stops32h 32mMultiple Airlines
Deal found 10/28$267
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2612:17 pmSWF - SEA
2 stops23h 22mMultiple Airlines
Deal found 10/28$290
This Mytrip deal was found by Cheapflights users on 10/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:23 pmSWF - SEA
3 stops25h 58mMultiple Airlines
Deal found 10/29$330
This Mytrip deal was found by Cheapflights users on 10/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2410:57 amSWF - SEA
3 stops26h 25mMultiple Airlines
Deal found 10/30$336

Cheapflights Fare Finder

 
Customize your flight search to find flights from Stewart to Seattle 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 October 30, 2025.
Use the filters below to find and compare flights from New Windsor to Seattle that are best for you.

Fly from

Stewart

Fly to

Seattle

Route

Depart

Return

Price

New WindsorSeattle

SWF - SEA

SWFSEA

New Windsor Stewart

Mon 12/15

7:30 pm-12:10 am

2 stops55h 40m

$142

New WindsorSeattle

SWF - SEA

SWFSEA

New Windsor Stewart

Sat 12/20

9:45 am-10:11 am

2 stops51h 26m

$191

New WindsorSeattle

SWF - SEA

SWFSEA

New Windsor Stewart

Fri 12/19

8:11 pm-10:11 am

3 stops41h 00m

$237

New WindsorSeattle

SWF - SEA

SWFSEA

New Windsor Stewart

Mon 12/22

7:10 pm-12:42 am

2 stops32h 32m

$267

New WindsorSeattle

SWF - SEA

SWFSEA

New Windsor Stewart

Wed 11/26

12:17 pm-8:39 am

2 stops23h 22m

$290

New WindsorSeattle

SWF - SEA

SWFSEA

New Windsor Stewart

Sun 11/23

6:23 pm-5:21 pm

3 stops25h 58m

$330

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

  • Most accurate provider: When it comes to deals on New Windsor-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New Windsor-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New Windsor-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New Windsor-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub 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 New Windsor-Seattle 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 Stewart to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Stewart 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 New Windsor to Seattle

What is the cheapest month to book a flight from New Windsor to Seattle?

Currently, October is the cheapest month in which you can book a flight from New Windsor to Seattle (average of $140). Flying from New Windsor to Seattle in December is currently the most expensive (average of $248). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Stewart to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Yes. In addition to deals on Stewart to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Stewart to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stewart to Seattle.

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

    Yes. Cheapflights offers flight deals from Stewart to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New Windsor to Seattle?

    Currently, October is the cheapest month in which you can book a flight from New Windsor to Seattle (average of $140). Flying from New Windsor to Seattle in December is currently the most expensive (average of $248). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
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Edmonds
Leavenworth
Renton
Kirkland
Lacey
Kent
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Issaquah

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