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Key West

$268+ Cheap flights from South Dakota to Key West (EYW)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — EYW
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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Cheap flight deals from South Dakota to Key West

Keep the following information in mind while searching for South Dakota to Key West flight deals. Data was last updated April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$411
(United Airlines)

Popular in

March

Cheapest in

July

Average price

$663
Provider with most accurate pricing for Sioux Falls Joe Foss Field-Key West flight deals.
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Provider most trusted by Cheapflights users for Sioux Falls Joe Foss Field-Key West flights.
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From South Dakota to Key West
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($156 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from South Dakota to Key West

Cheapest flights from South Dakota to Key West
Explore the most affordable flight options available from South Dakota to Key West. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

This Delta deal was found by Cheapflights users on 3/31. 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.
Sun 4/205:05 amFSD - EYW
1 stop5h 25mDelta
Wed 4/236:13 pmEYW - FSD
1 stop6h 03mDelta
Deal found 3/31$268
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Sat 4/198:00 amFSD - EYW
1 stop6h 04mUnited Airlines
Wed 4/234:04 pmEYW - FSD
1 stop7h 08mUnited Airlines
Deal found 3/31$319
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Sat 11/86:55 amFSD - EYW
1 stop8h 21mAmerican Airlines
Wed 11/123:50 pmEYW - FSD
1 stop6h 08mAmerican Airlines
Deal found 4/1$344
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Wed 4/1610:43 amFSD - EYW
1 stop20h 30mAllegiant Air
Sun 4/2010:23 amEYW - FSD
2 stops24h 59mAllegiant Air
Deal found 4/1$716
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Wed 4/161:39 pmFSD - EYW
3 stops26h 10mMultiple Airlines
Sun 4/2010:23 amEYW - FSD
2 stops24h 59mMultiple Airlines
Deal found 4/1$734

Cheapflights Fare Finder

Customize your flight search to find flights from South Dakota to Key West 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 April 2, 2025.
Use the filters below to find and compare flights from South Dakota to Key West that are best for you.

Fly from

South Dakota

Fly to

Key West

Route

Depart

Return

Price

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sun 4/20

5:05 am-11:30 am

1 stop5h 25m

Key West

Wed 4/23

6:13 pm-11:16 pm

1 stop6h 03m

$268

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sat 4/19

8:00 am-3:04 pm

1 stop6h 04m

Key West

Wed 4/23

4:04 pm-10:12 pm

1 stop7h 08m

$319

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 4/29

5:21 am-12:22 pm

1 stop6h 01m

Key West

Tue 5/6

3:17 pm-10:43 pm

2 stops8h 26m

$399

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 4/16

10:43 am-8:13 am

1 stop20h 30m

Key West

Sun 4/20

10:23 am-10:22 am

2 stops24h 59m

$716

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 4/16

1:39 pm-4:49 pm

3 stops26h 10m

Key West

Sun 4/20

10:23 am-10:22 am

2 stops24h 59m

$734

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Best time to book a flight from South Dakota to Key West

Have a flexible travel schedule? Discover the best time to fly to Key West 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 Key West

What is the cheapest month to book a flight from South Dakota to Key West?

Currently, August is the cheapest month in which you can book a flight from South Dakota to Key West (average of $328). Flying from South Dakota to Key West in March is currently the most expensive (average of $493). 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.

Rainfall in Key West by month

Plan your trip to Key West by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key West ranges from 1.5 - 6.7 inches per month. September is typically the wettest month, when rainfall can reach 6.7 in. February is typically the driest time to visit Key West when rainfall is around 1.5 in.

Temperature in Key West by month

Plan your trip to Key West by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key West, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 69.8 F).

Reviews of airlines servicing Key West

Get insights into the airlines that provide service to Key West. 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 Key West. Reviews last updated April 2, 2025.
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,616 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Allegiant Air
7.3
Good
731 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,898 reviews

Overall

8.0

Boarding

8.2

Comfort

7.9

Crew

8.5

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from South Dakota to Key West. 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 into for flights to Key West from South Dakota?

    Most people fly into Key West (EYW) if they book a flight to Key West from South Dakota. Key West is conveniently located just 2.6 mi from Key West’s city center.

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

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

  • How can I find direct flights from South Dakota to Key West?

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

  • Can I find deals for business class flights from South Dakota to Key West?

    Yes. Cheapflights offers flight deals from South Dakota to Key West 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 Key West?

    Currently, August is the cheapest month in which you can book a flight from South Dakota to Key West (average of $328). Flying from South Dakota to Key West in March is currently the most expensive (average of $493). 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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Top 3 airlines flying from South Dakota to Key West

Discover the top 3 airlines that operate flights from South Dakota to Key West. 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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$548FlexibilityNo cancel feeOn-time71%
DeltaCheapest$288Average$567FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$353Average$538FlexibilityNo cancel feeOn-time69%

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