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Keflavik Intl

$255+ Cheap flights from South Dakota 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — KEF
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from South Dakota to Keflavik Intl

Keep the following information in mind while searching for South Dakota to Keflavik Intl flight deals. Data was last updated August 20, 2025.

Round-trip from

$741
(United Airlines)

One-way from

$255
(Kiwi.com)
From South Dakota to Reykjavik Keflavik Intl
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One-way flight from South Dakota to Reykjavik Keflavik Intl
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Find flight deals from South Dakota to Keflavik Intl

Cheapest flights from South Dakota to Keflavik Intl
Explore the most affordable flight options available from South Dakota to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This United Airlines deal was found by Cheapflights users on 8/18. 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 9/146:11 pmFSD - KEF
1 stop9h 19mUnited Airlines
Sun 9/2112:00 pmKEF - FSD
1 stop15h 12mUnited Airlines
Deal found 8/18$741
This United Airlines deal was found by Cheapflights users on 8/18. 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.
Tue 9/1611:20 amFSD - KEF
2 stops15h 50mUnited Airlines
Sat 9/279:50 amKEF - FSD
2 stops35h 20mUnited Airlines
Deal found 8/18$785
This Ovago deal was found by Cheapflights users on 8/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/143:12 pmFSD - KEF
1 stop12h 18mLufthansa
Sat 9/2012:25 amKEF - FSD
2 stops26h 47mLufthansa
Deal found 8/18$798
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Fri 9/511:18 amRAP - KEF
2 stops13h 42mUnited Airlines
Tue 9/99:50 amKEF - RAP
2 stops39h 00mUnited Airlines
Deal found 8/17$807
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Fri 8/226:00 amFSD - KEF
2 stops21h 30mUnited Airlines
Tue 8/269:50 amKEF - FSD
2 stops42h 50mUnited Airlines
Deal found 8/17$814
This Lufthansa deal was found by Cheapflights users on 8/17. 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.
Fri 8/222:08 pmFSD - KEF
2 stops28h 27mLufthansa
Mon 8/2512:25 amKEF - FSD
2 stops25h 04mLufthansa
Deal found 8/17$935
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/165:30 amFSD - KEF
2 stops23h 00mDelta
Sat 9/2711:25 amKEF - FSD
2 stops31h 26mDelta
Deal found 8/18$941
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/54:25 pmRAP - KEF
1 stop8h 35mDelta
Tue 9/98:45 amKEF - RAP
2 stops19h 47mDelta
Deal found 8/18$1,185
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 12/174:30 pmRAP - KEF
2 stops35h 25mAmerican Airlines
Sat 12/2711:55 amKEF - RAP
2 stops39h 22mAmerican Airlines
Deal found 8/19$2,326
This American Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 8/2012:50 pmRAP - KEF
2 stops21h 40mMultiple Airlines
Fri 8/2210:30 amKEF - RAP
2 stops31h 09mMultiple Airlines
Deal found 8/19$4,622
This United Airlines deal was found by Cheapflights users on 8/19. 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.
Wed 8/201:35 pmRAP - KEF
1 stop12h 55mUnited Airlines
Fri 8/2211:00 amKEF - RAP
2 stops16h 59mUnited Airlines
Deal found 8/19$4,626
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/202:25 pmRAP - KEF
1 stop10h 35mDelta
Fri 8/229:30 amKEF - RAP
1 stop12h 15mDelta
Deal found 8/19$6,885

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Dakota 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 August 20, 2025.
Use the filters below to find and compare flights from South Dakota to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

South Dakota

Fly to

Keflavik Intl

Route

Depart

Return

Price

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

Sun 9/21

12:00 pm-10:12 pm

1 stop15h 12m

$741

Sioux FallsReykjavik

FSD - KEF

FSDKEF

Sioux Falls Joe Foss Field

Tue 9/16

11:20 am-8:10 am

2 stops15h 50m

Reykjavik Keflavik Intl

Sat 9/27

9:50 am-4:10 pm

2 stops35h 20m

$785

Sioux FallsReykjavik

FSD - KEF

FSDKEF

Sioux Falls Joe Foss Field

Sun 9/14

3:12 pm-8:30 am

1 stop12h 18m

Reykjavik Keflavik Intl

Sat 9/20

12:25 am-10:12 pm

2 stops26h 47m

$798

Rapid CityReykjavik

RAP - KEF

RAPKEF

Rapid City

Fri 9/5

11:18 am-7:00 am

2 stops13h 42m

Reykjavik Keflavik Intl

Tue 9/9

9:50 am-6:50 pm

2 stops39h 00m

$807

Rapid CityReykjavik

RAP - KEF

RAPKEF

Rapid City

Fri 9/5

4:25 pm-7:00 am

1 stop8h 35m

Reykjavik Keflavik Intl

Tue 9/9

8:45 am-10:32 pm

2 stops19h 47m

$1,185

Rapid CityReykjavik

RAP - KEF

RAPKEF

Rapid City

Sat 8/30

12:50 pm-4:45 am

2 stops33h 55m

$255

Rapid CityReykjavik

RAP - KEF

RAPKEF

Rapid City

Sat 8/23

12:50 pm-4:45 am

3 stops57h 55m

$348

Rapid CityReykjavik

RAP - KEF

RAPKEF

Rapid City

Thu 8/28

8:30 pm-4:55 am

3 stops50h 25m

$395

Rapid CityReykjavik

RAP - KEF

RAPKEF

Rapid City

Sun 8/31

8:30 pm-4:55 am

3 stops50h 25m

$424

Rapid CityReykjavik

RAP - KEF

RAPKEF

Rapid City

Mon 8/25

4:18 pm-8:15 am

2 stops33h 57m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 18 results
1
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Best time to book a flight from South Dakota to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from South Dakota 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 South Dakota to Reykjavik Keflavik Intl Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

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

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

    United Airlines can get you from South Dakota to Reykjavik Keflavik Intl Airport in just under 9h 19m. Your travel time can differ by up to . The distance from South Dakota to Reykjavik Keflavik Intl Airport is about 3111 mi.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from South Dakota to Reykjavik Keflavik Intl Airport (average of $328). Flying from South Dakota to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $654). 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

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