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Keflavik Intl

$341+ Cheap flights from New Windsor (SWF) to Keflavik Intl (KEF)

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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SWF — KEF
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from New Windsor Stewart to Reykjavik Keflavik Intl are usually found in March or January, booked 43 days in advance, depart on a Sunday or Tuesday and return on a Tuesday

Cheap flight deals from Stewart to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Stewart (SWF) to Keflavik Intl (KEF). 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 September 11, 2025.

Round-trip from

$1,111
(Mytrip)

One-way from

$341
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$339
From New Windsor Stewart to Reykjavik Keflavik Intl
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One-way flight from New Windsor Stewart to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 9% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Stewart to Keflavik Intl

Cheapest flights from Stewart to Keflavik Intl
Explore the most affordable flight options available from Stewart to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:45 pmSWF - KEF
2 stops32h 20mMultiple Airlines
Sun 10/193:05 pmKEF - SWF
2 stops23h 06mMultiple Airlines
Deal found 9/11$1,111
This Mytrip deal was found by Cheapflights users on 9/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/265:45 pmSWF - KEF
2 stops32h 20mMultiple Airlines
Sun 11/25:00 pmKEF - SWF
2 stops23h 11mMultiple Airlines
Deal found 9/11$1,140
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Sun 9/2111:43 amSWF - KEF
1 stop17h 32mMultiple Airlines
Sat 9/273:05 pmKEF - SWF
2 stops23h 58mMultiple Airlines
Deal found 9/11$1,382
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Sun 9/2111:43 amSWF - KEF
1 stop17h 32mMultiple Airlines
Wed 9/243:05 pmKEF - SWF
2 stops23h 58mMultiple Airlines
Deal found 9/11$1,390
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Thu 9/1811:43 amSWF - KEF
1 stop17h 32mMultiple Airlines
Sat 9/273:05 pmKEF - SWF
2 stops23h 58mMultiple Airlines
Deal found 9/11$1,811
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Thu 9/1811:43 amSWF - KEF
1 stop17h 32mMultiple Airlines
Wed 9/243:05 pmKEF - SWF
2 stops23h 58mMultiple Airlines
Deal found 9/11$1,819
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Sun 9/2111:43 amSWF - KEF
1 stop17h 32mMultiple Airlines
Thu 9/254:45 pmKEF - SWF
2 stops22h 59mMultiple Airlines
Deal found 9/11$1,997
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Mon 9/1512:24 pmSWF - KEF
2 stops16h 51mMultiple Airlines
Sat 9/274:45 pmKEF - SWF
1 stop22h 18mMultiple Airlines
Deal found 9/11$2,064

Cheapflights Fare Finder

 
Customize your flight search to find flights from Stewart to Keflavik Intl 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 September 11, 2025.
Use the filters below to find and compare flights from New Windsor to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Stewart

Fly to

Keflavik Intl

Route

Depart

Return

Price

New WindsorReykjavik

SWF - KEF

SWFKEF

New Windsor Stewart

Thu 10/16

5:45 pm-6:05 am

2 stops32h 20m

Reykjavik Keflavik Intl

Sun 10/19

3:05 pm-10:11 am

2 stops23h 06m

$1,111

New WindsorReykjavik

SWF - KEF

SWFKEF

New Windsor Stewart

Sun 9/21

11:43 am-9:15 am

1 stop17h 32m

Reykjavik Keflavik Intl

Sat 9/27

3:05 pm-11:03 am

2 stops23h 58m

$1,382

New WindsorReykjavik

SWF - KEF

SWFKEF

New Windsor Stewart

Sun 9/21

11:43 am-9:15 am

1 stop17h 32m

Reykjavik Keflavik Intl

Wed 9/24

3:05 pm-11:03 am

2 stops23h 58m

$1,390

New WindsorReykjavik

SWF - KEF

SWFKEF

New Windsor Stewart

Thu 11/6

11:43 am-6:15 am

1 stop13h 32m

Reykjavik Keflavik Intl

Tue 11/11

5:00 pm-12:42 pm

2 stops48h 42m

$1,553

New WindsorReykjavik

SWF - KEF

SWFKEF

New Windsor Stewart

Sun 9/21

11:43 am-9:15 am

1 stop17h 32m

Reykjavik Keflavik Intl

Thu 9/25

4:45 pm-11:44 am

2 stops22h 59m

$1,997

New WindsorReykjavik

SWF - KEF

SWFKEF

New Windsor Stewart

Sun 9/21

11:43 am-9:15 am

1 stop17h 32m

Reykjavik Keflavik Intl

Sun 9/28

4:45 pm-11:44 am

2 stops22h 59m

$2,125

New WindsorReykjavik

SWF - KEF

SWFKEF

New Windsor Stewart

Thu 9/25

7:12 pm-4:55 am

2 stops29h 43m

$346

New WindsorReykjavik

SWF - KEF

SWFKEF

New Windsor Stewart

Sun 9/21

7:12 pm-4:55 am

2 stops29h 43m

$406

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Best time to book a flight from Stewart to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl 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 Reykjavik Keflavik Intl Airport

How far ahead should I book a flight from New Windsor to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Stewart to Keflavik Intl. Price data was last updated on August 29, 2025.

The best time to book flights from New Windsor to Reykjavik Keflavik Intl Airport is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from New Windsor to Reykjavik Keflavik Intl Airport?

Currently, November is the cheapest month in which you can book a flight from New Windsor to Reykjavik Keflavik Intl Airport (average of $328). Flying from New Windsor to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $655). 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.

How much does it cost to fly round-trip from New Windsor to Reykjavik Keflavik Intl Airport?

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated September 11, 2025.
See what other customers who have flown with PLAY from New Windsor to Reykjavik Keflavik Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
PLAY
7.0
Good
103 reviews

Crew

8.0

Overall

7.0

Entertainment

4.7

Comfort

6.5

Food

5.5

Boarding

7.3

Reviews

1 / 2
4.0
Okay

Lisa,Oct 2024

BER - KEF

I’ll never fly Play again. We were jammed into the tiniest spaces ever and they didn’t even give us water, tea, or coffee without charging. When we were coming in for a landing I thought we might never make it off the plane alive. The worst.
PLAY
7.0
Good
103 reviews
PLAY
7.0
Good
103 reviews

Crew

8.0

Overall

7.0

Entertainment

4.7

Comfort

6.5

Food

5.5

Boarding

7.3

Reviews

1 / 2
4.0
Okay

Lisa,Oct 2024

BER - KEF

I’ll never fly Play again. We were jammed into the tiniest spaces ever and they didn’t even give us water, tea, or coffee without charging. When we were coming in for a landing I thought we might never make it off the plane alive. The worst.

Related info for your journey

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

  • What airport do you fly from for flights from New Windsor to Reykjavik Keflavik Intl?

    Most people fly from New Windsor Stewart (SWF) if they book a flight from New Windsor to Reykjavik Keflavik Intl. On average, Stewart has 0 outbound flights to Reykjavik Keflavik Intl per day from 2 airlines. New Windsor Stewart is conveniently located just 4.3 mi from New Windsor’s city center.

  • What are the cheapest airlines flying from New Windsor to Reykjavik Keflavik Intl Airport round-trip?

    Flying on PLAY is currently your cheapest option to Reykjavik Keflavik Intl Airport, with prices starting at $250. Another option worth looking into is WorldTicket, starting at $461 round trip. PLAY is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest flights from New Windsor to Reykjavik Keflavik Intl Airport?

    Looking at all options, your cheapest flight can be booked for $84. While the most popular route (New Windsor Stewart - Reykjavik Keflavik Intl) can be booked for $1,063 on average, our data indicates $383 when flying from New Windsor to Reykjavik Keflavik Intl Airport.

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

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

  • How can I find direct flights from Stewart to Keflavik Intl?

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

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

    Yes. Cheapflights offers flight deals from Stewart to Keflavik Intl 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 Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from New Windsor to Reykjavik Keflavik Intl Airport (average of $328). Flying from New Windsor to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $655). 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 Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Stewart to Keflavik Intl

Discover the top airline that operate flights from Stewart to Keflavik Intl. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$250Average$370FlexibilityNo cancel feeOn-timeN/A

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