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Keflavik Intl

$698+ Cheap flights from Sioux Falls (FSD) 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — KEF
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Sioux Falls to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) 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 June 12, 2025.

Round-trip from

$698
(United Airlines)
From Sioux Falls Joe Foss Field to Reykjavik Keflavik Intl
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Cheapest flights from Sioux Falls to Keflavik Intl
Explore the most affordable flight options available from Sioux Falls to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/148:00 amFSD - KEF
1 stop19h 30mUnited Airlines
Sun 9/219:30 amKEF - FSD
2 stops41h 42mUnited Airlines
Deal found 6/10$698
This Gurufare deal was found by Cheapflights users on 6/12. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:11 pmFSD - KEF
2 stops24h 24mLufthansa
Sat 9/2012:25 amKEF - FSD
2 stops26h 47mLufthansa
Deal found 6/12$1,030
This Lufthansa deal was found by Cheapflights users on 6/12. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/146:11 pmFSD - KEF
1 stop9h 19mMultiple Airlines
Sat 9/201:15 amKEF - FSD
2 stops24h 14mMultiple Airlines
Deal found 6/12$1,224
This KLM deal was found by Cheapflights users on 6/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/1412:56 pmFSD - KEF
1 stop13h 04mKLM
Mon 6/169:30 amKEF - FSD
1 stop19h 14mKLM
Deal found 6/10$2,630

Cheapflights Fare Finder

Customize your flight search to find flights from Sioux Falls 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 June 12, 2025.
Use the filters below to find and compare flights from Sioux Falls to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Sioux Falls

Fly to

Keflavik Intl

Route

Depart

Return

Price

Sioux FallsReykjavik

FSD - KEF

FSDKEF

Sioux Falls Joe Foss Field

Sun 9/14

8:00 am-8:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

Sun 9/21

9:30 am-10:12 pm

2 stops41h 42m

$698

Sioux FallsReykjavik

FSD - KEF

FSDKEF

Sioux Falls Joe Foss Field

Sun 9/14

6:11 pm-11:35 pm

2 stops24h 24m

Reykjavik Keflavik Intl

Sat 9/20

12:25 am-10:12 pm

2 stops26h 47m

$1,030

Sioux FallsReykjavik

FSD - KEF

FSDKEF

Sioux Falls Joe Foss Field

Sun 9/14

6:11 pm-8:30 am

1 stop9h 19m

Reykjavik Keflavik Intl

Sat 9/20

1:15 am-8:29 pm

2 stops24h 14m

$1,224

Sioux FallsReykjavik

FSD - KEF

FSDKEF

Sioux Falls Joe Foss Field

Sat 6/21

6:00 pm-9:45 am

2 stops34h 45m

$873

Sioux FallsReykjavik

FSD - KEF

FSDKEF

Sioux Falls Joe Foss Field

Sat 6/21

5:15 am-6:20 am

2 stops20h 05m

$1,047

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Best time to book a flight from Sioux Falls to Keflavik Intl

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

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 June 12, 2025.
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,136 reviews
Delta
8.0
Very good
7,950 reviews

Overall

8.0

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

    Most people fly from Sioux Falls Joe Foss Field (FSD) if they book a flight from Sioux Falls to Reykjavik Keflavik Intl. On average, Joe Foss Field has 0 outbound flights to Reykjavik Keflavik Intl per day from 0 airlines. Sioux Falls Joe Foss Field is conveniently located just 2.6 mi from Sioux Falls’s city center.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Sioux Falls to Reykjavik Keflavik Intl Airport (average of $328). Flying from Sioux Falls to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $659). 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

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