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Stewart

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

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SWF
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Seattle to Stewart

One-way flights from Seattle to Stewart
Search for one-way flight options from Seattle to Stewart. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/11. 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 1/102:49 pmSEA - SWF
3 stops40h 30mMultiple Airlines
Deal found 12/11$142
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Tue 1/61:00 pmSEA - SWF
3 stops41h 58mMultiple Airlines
Deal found 12/11$154
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Thu 1/812:26 pmSEA - SWF
2 stops27h 17mMultiple Airlines
Deal found 12/9$155
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 2/131:09 pmSEA - SWF
3 stops42h 43mMultiple Airlines
Deal found 12/9$173
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 1/173:58 pmSEA - SWF
3 stops39h 21mMultiple Airlines
Deal found 12/10$177
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 1/99:02 pmSEA - SWF
2 stops35h 31mMultiple Airlines
Deal found 12/10$181
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 1/129:02 pmSEA - SWF
3 stops57h 56mMultiple Airlines
Deal found 12/8$186
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 1/1612:19 pmSEA - SWF
2 stops44h 14mMultiple Airlines
Deal found 12/9$192

Find flight deals from Seattle to Stewart

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Stewart (SWF). 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Popular in

December

Cheapest in

September

Average price

$492
Provider with most accurate pricing for Seattle/Tacoma Intl-New Windsor Stewart flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-New Windsor Stewart flights.
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Stewart 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 December 12, 2025.
Use the filters below to find and compare flights from Seattle to New Windsor that are best for you.

Fly from

Seattle

Fly to

Stewart

Route

Depart

Return

Price

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Sat 1/10

2:49 pm-10:19 am

3 stops40h 30m

$142

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Tue 1/6

1:00 pm-11:33 am

3 stops43h 33m

$154

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Thu 1/8

12:26 pm-6:43 pm

2 stops27h 17m

$155

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Sat 1/17

3:58 pm-10:19 am

3 stops39h 21m

$177

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Fri 1/16

12:19 pm-11:33 am

2 stops44h 14m

$192

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Sun 1/25

12:34 pm-11:31 am

3 stops19h 57m

$194

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Sun 1/11

12:26 pm-11:31 am

3 stops20h 05m

$195

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Sat 1/24

12:54 pm-6:43 pm

3 stops50h 49m

$218

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Fri 2/13

12:30 pm-10:52 am

3 stops43h 22m

$219

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Compare providers for flights from Seattle to Stewart

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Stewart in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

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

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

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

Currently, December is the cheapest month in which you can book a flight from Seattle to New Windsor (average of $129). Flying from Seattle to New Windsor in January is currently the most expensive (average of $217). 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 Seattle to Stewart. 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 Seattle to Stewart that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Stewart 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 Seattle to New Windsor?

    Currently, December is the cheapest month in which you can book a flight from Seattle to New Windsor (average of $129). Flying from Seattle to New Windsor in January is currently the most expensive (average of $217). 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 New Windsor?

Book flights to New Windsor if you plan to visit one of these locations
Kingston

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