HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Stewart

$152+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SWF
Apr 12 — Apr 191
Sun 4/12
Sun 4/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Stewart with Cheapflights

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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 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 March 13, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Mon 5/119:35 pm
SEA
-
SWF
3 stops58h 20m
Multiple Airlines
Deal found 3/9$152
This Kiwi.com deal was found by Cheapflights users on 3/8. 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 4/139:34 pm
SEA
-
SWF
3 stops58h 21m
Multiple Airlines
Deal found 3/8$157
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 5/197:50 pm
SEA
-
SWF
3 stops34h 48m
Multiple Airlines
Deal found 3/11$163
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 4/2710:11 pm
SEA
-
SWF
3 stops57h 44m
Multiple Airlines
Deal found 3/10$166
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Fri 5/110:06 pm
SEA
-
SWF
2 stops57h 44m
Multiple Airlines
Deal found 3/8$172
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 5/84:20 pm
SEA
-
SWF
3 stops39h 35m
Multiple Airlines
Deal found 3/10$174
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Mon 5/47:12 pm
SEA
-
SWF
3 stops37h 13m
Multiple Airlines
Deal found 3/9$175
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/147:12 pm
SEA
-
SWF
3 stops36h 43m
Multiple Airlines
Deal found 3/11$181

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 March 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

December

Cheapest in

September

Average price

$342
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. 4% potential increase in price ($17 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 March 2026
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 March 13, 2026.
Use the filters below to find and compare flights from Seattle to New Windsor that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest one-way

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Mon 4/27

10:11 pm-10:55 am

3 stops57h 44m

$166

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Sun 5/3

10:25 pm-11:25 am

3 stops58h 00m

$185

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Tue 9/8

1:00 pm-8:58 am

2 stops40h 58m

$208

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Fri 3/27

10:08 pm-9:39 am

3 stops32h 31m

$212

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Wed 4/22

10:57 am-11:08 am

2 stops21h 11m

$230

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Wed 5/20

6:57 pm-8:51 am

2 stops34h 54m

$240

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Sat 8/29

2:16 pm-11:35 am

3 stops42h 19m

$242

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Mon 8/17

2:16 pm-11:25 am

3 stops42h 09m

$245
Quickest one-way

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Thu 5/14

4:20 pm-11:35 am

3 stops16h 15m

$262

SeattleNew Windsor

SEA - SWF

SEASWF

Seattle/Tacoma Intl

Mon 9/7

9:14 pm-11:25 am

3 stops35h 11m

$265

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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 March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-New Windsor flight deals on Cheapflights vs. FlightHub >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 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 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 April is currently the most expensive (average of $219). 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 April is currently the most expensive (average of $219). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
Cookie settings©2026 Cheapflights