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Keflavik Intl

$720+ Cheap flights from Appleton (ATW) to Keflavik Intl (KEF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
ATW — KEF
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap flight deals from Appleton to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Appleton (ATW) 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 October 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$720
(United)
Provider with most accurate pricing for Appleton Intl-Reykjavik Keflavik Intl flight deals.
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Provider most trusted by Cheapflights users for Appleton Intl-Reykjavik Keflavik Intl flights.
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From Appleton Intl to Reykjavik Keflavik Intl
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Find flight deals from Appleton to Keflavik Intl

Cheapest flights from Appleton to Keflavik Intl
Explore the most affordable flight options available from Appleton to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:39 amATW - KEF
3 stops19h 16mMultiple Airlines
Mon 12/1511:50 amKEF - ATW
2 stops37h 19mMultiple Airlines
Deal found 10/30$3,295

Cheapflights Fare Finder

 
Customize your flight search to find flights from Appleton 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 October 30, 2025.
Use the filters below to find and compare flights from Appleton to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Appleton

Fly to

Keflavik Intl

Route

Depart

Return

Price

AppletonReykjavik

ATW - KEF

ATWKEF

Appleton Intl

Wed 4/1

3:45 pm-12:10 am

2 stops27h 25m

Reykjavik Keflavik Intl

Sun 4/5

12:25 am-7:16 pm

2 stops47h 51m

$720

AppletonReykjavik

ATW - KEF

ATWKEF

Appleton Intl

Wed 4/1

11:00 am-9:30 am

2 stops17h 30m

Reykjavik Keflavik Intl

Mon 4/6

11:25 am-8:49 pm

2 stops14h 24m

$793

AppletonReykjavik

ATW - KEF

ATWKEF

Appleton Intl

Sat 3/14

4:51 pm-5:05 pm

2 stops19h 14m

Reykjavik Keflavik Intl

Sat 3/21

11:55 am-9:32 pm

2 stops38h 37m

$1,252

AppletonReykjavik

ATW - KEF

ATWKEF

Appleton Intl

Sat 3/14

8:20 am-2:20 pm

3 stops25h 00m

Reykjavik Keflavik Intl

Sat 3/21

2:20 pm-4:50 pm

2 stops31h 30m

$1,382

AppletonReykjavik

ATW - KEF

ATWKEF

Appleton Intl

Mon 12/8

9:39 am-10:55 am

3 stops19h 16m

Reykjavik Keflavik Intl

Mon 12/15

11:50 am-7:09 pm

2 stops37h 19m

$3,295

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Appleton 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.

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 October 30, 2025.
See what other customers who have flown with KLM from Appleton 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.
KLM
7.7
Good
1,406 reviews

Comfort

7.7

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,406 reviews
KLM
7.7
Good
1,406 reviews

Comfort

7.7

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Food

7.3

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from Appleton 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 Appleton to Reykjavik Keflavik Intl?

    For a flight from Appleton to Reykjavik Keflavik Intl, you will be flying from Appleton Intl. Appleton Intl (ATW) is just 5.1 mi from the center of the city. Appleton Intl is the only Appleton airport and it handles 0 outbound flights to Reykjavik Keflavik Intl per day. 1 airline has flights to Reykjavik Keflavik Intl from Appleton Intl on a regular basis.

  • How long is the flight from Appleton to Reykjavik Keflavik Intl Airport?

    A quick flight from Appleton to Reykjavik Keflavik Intl Airport can take about 17h 30m. Delta provides one of the quickest options available for as low as $793. There are 2827 mi between Appleton and Reykjavik Keflavik Intl Airport. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Appleton to Reykjavik Keflavik Intl Airport round-trip?

    KLM, at $838, was found to be the cheapest airline from Appleton to Reykjavik Keflavik Intl Airport..

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Appleton 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.

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

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Top airline flying from Appleton to Keflavik Intl

Discover the top airline that operate flights from Appleton 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$838Average$887FlexibilityNo cancel feeOn-time75%

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