What airlines fly to Key West?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Key West from South Dakota according to our data. American Airlines is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Key West. Keep in mind that there are 3 different airlines that fly to Key West on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Key West?

If you’re flying from a popular airport in South Dakota, such as Sioux Falls or Aberdeen, and flying into Key West, then you can expect flight times to average 6h 19m and 28h 01m, respectively.

When did momondo last update prices for flights from South Dakota to Key West Airport?

Prices for flights from South Dakota to Key West Airport are updated daily.

How many operators does momondo search for flights from South Dakota to Key West Airport?

As of October 2025, there are 3 operators available to choose from for flights from South Dakota to Key West Airport.

How old do you have to be to fly from South Dakota to Key West Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to Key West Airport.

What documentation or ID do you need to fly to Key West Airport?

The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$288 Cheap Flights from South Dakota to Key West in 2025/26

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Find the cheapest flights from South Dakota to Key West

Round-trip

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:30 am - 3:17 pmFSD-EYW

6h 47m1 stop

4:15 pm - 10:47 amEYW-FSD

19h 32m1 stop

$470United Airlines

Find Deal

Tue, Jan 6 - Fri, Jan 9

7:30 am - 3:17 pmFSD-EYW

6h 47m1 stop

2:25 pm - 10:47 amEYW-FSD

21h 22m2 stops

$475United Airlines

Find Deal

Tue, Jan 6 - Fri, Jan 9

7:02 pm - 2:46 pmFSD-EYW

18h 44m1 stop

2:33 pm - 9:31 amEYW-FSD

19h 58m2 stops

$490Allegiant Air

Find Deal

Fri, Dec 19 - Mon, Dec 22

5:29 am - 4:13 pmFSD-EYW

9h 44m2 stops

2:39 pm - 9:09 pmEYW-FSD

7h 30m1 stop

$491American Airlines

Find Deal

Tue, Nov 25 - Tue, Dec 2

5:29 am - 5:06 pmFSD-EYW

10h 37m2 stops

11:44 am - 6:45 pmEYW-FSD

8h 01m2 stops

$496American Airlines

Find Deal

Tue, Nov 25 - Tue, Dec 2

8:50 pm - 9:45 pmFSD-EYW

23h 55m2 stops

10:32 pm - 9:07 amEYW-FSD

11h 35m1 stop

$589Multiple Airlines

Find Deal

Fri, Dec 26 - Tue, Dec 30

12:21 pm - 1:30 pmFSD-EYW

24h 09m2 stops

2:33 pm - 9:31 amEYW-FSD

19h 58m2 stops

$604Multiple Airlines

Find Deal

Fri, Dec 19 - Mon, Dec 22

5:30 am - 11:27 amFSD-EYW

4h 57m1 stop

6:18 pm - 11:09 pmEYW-FSD

5h 51m1 stop

$649Delta

Find Deal

Sat, Nov 8 - Wed, Nov 12

5:05 am - 11:31 amFSD-EYW

5h 26m1 stop

6:18 pm - 11:09 pmEYW-FSD

5h 51m1 stop

$763Delta

Find Deal

Wed, Nov 12 - Sun, Nov 16

6:55 pm - 4:59 pmFSD-EYW

45h 04m2 stops

10:35 pm - 9:27 amEYW-FSD

11h 52m1 stop

$856Allegiant Air

Find Deal

Sat, Dec 27 - Sat, Jan 3

United Airlines flights from South Dakota to Key West

Our best United Airlines deals on South Dakota to Key West flight tickets

United Airlines

Jan 6

FSD7:30 amSioux Falls Joe Foss Field

6h 47m

1 stop

EYW3:17 pmKey West

Jan 9

EYW4:15 pmKey West

19h 32m

1 stop

FSD10:47 amSioux Falls Joe Foss Field

$470

Find similar

United Airlines

Jan 6

FSD7:30 amSioux Falls Joe Foss Field

6h 47m

1 stop

EYW3:17 pmKey West

Jan 9

EYW2:25 pmKey West

21h 22m

2 stops

FSD10:47 amSioux Falls Joe Foss Field

$475

Find similar

United Airlines

Jan 5

FSD8:50 amSioux Falls Joe Foss Field

29h 27m

2 stops

EYW3:17 pmKey West

Jan 9

EYW4:15 pmKey West

19h 32m

1 stop

FSD10:47 amSioux Falls Joe Foss Field

$553

Find similar

American Airlines flights from South Dakota to Key West

Our best American Airlines deals on South Dakota to Key West flight tickets

American Airlines

Nov 25

FSD5:29 amSioux Falls Joe Foss Field

9h 44m

2 stops

EYW4:13 pmKey West

Dec 2

EYW2:39 pmKey West

7h 30m

1 stop

FSD9:09 pmSioux Falls Joe Foss Field

$491

Find similar

American Airlines

Nov 25

FSD5:29 amSioux Falls Joe Foss Field

10h 37m

2 stops

EYW5:06 pmKey West

Dec 2

EYW11:44 amKey West

8h 01m

2 stops

FSD6:45 pmSioux Falls Joe Foss Field

$496

Find similar

American Airlines

Dec 19

FSD10:46 amSioux Falls Joe Foss Field

6h 16m

1 stop

EYW6:02 pmKey West

Dec 22

EYW6:26 pmKey West

6h 33m

1 stop

FSD11:59 pmSioux Falls Joe Foss Field

$503

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 1/6

7:30 am-3:17 pm

1 stop6h 47m

Key West

Fri 1/9

4:15 pm-10:47 am

1 stop19h 32m

$470

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 1/6

7:30 am-3:17 pm

1 stop6h 47m

Key West

Fri 1/9

2:25 pm-10:47 am

2 stops21h 22m

$475

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 12/19

7:02 pm-2:46 pm

1 stop18h 44m

Key West

Mon 12/22

2:33 pm-9:31 am

2 stops19h 58m

$490

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 11/25

5:29 am-4:13 pm

2 stops9h 44m

Key West

Tue 12/2

2:39 pm-9:09 pm

1 stop7h 30m

$491

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 11/25

5:29 am-5:06 pm

2 stops10h 37m

Key West

Tue 12/2

11:44 am-6:45 pm

2 stops8h 01m

$496

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 12/26

8:50 pm-9:45 pm

2 stops23h 55m

Key West

Tue 12/30

10:32 pm-9:07 am

1 stop11h 35m

$589

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 12/19

12:21 pm-1:30 pm

2 stops24h 09m

Key West

Mon 12/22

2:33 pm-9:31 am

2 stops19h 58m

$604

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sat 11/8

5:30 am-11:27 am

1 stop4h 57m

Key West

Wed 11/12

6:18 pm-11:09 pm

1 stop5h 51m

$649

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 11/12

5:05 am-11:31 am

1 stop5h 26m

Key West

Sun 11/16

6:18 pm-11:09 pm

1 stop5h 51m

$763

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sat 12/27

6:55 pm-4:59 pm

2 stops45h 04m

Key West

Sat 1/3

10:35 pm-9:27 am

1 stop11h 52m

$856

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from South Dakota to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Key West?

In general, July is the cheapest month to fly from South Dakota to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $310. If you are unable to visit Key West during the month of July, then departing from South Dakota during the month September is also very affordable. Most momondo users find prices during this month for around $343.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from South Dakota is on a Friday. momondo users have found tickets for Friday departures for as low as $302. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from South Dakota to Key West for around $660.

Can stopping save me money on South Dakota to Key West flights?

You could potentially save up to 47% on your flight if you consider stops on a South Dakota to Key West flight.

Cheap South Dakota to Key West flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from South Dakota to Key West

Direct flights	None

There are no direct flights from South Dakota to Key West. There are no popular flight routes from South Dakota to Key West.

Search flight deals

When did momondo last update prices for flights from South Dakota to Key West Airport?
Prices for flights from South Dakota to Key West Airport are updated daily.
How many operators does momondo search for flights from South Dakota to Key West Airport?
As of October 2025, there are 3 operators available to choose from for flights from South Dakota to Key West Airport.
How old do you have to be to fly from South Dakota to Key West Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from South Dakota to Key West Airport.
What documentation or ID do you need to fly to Key West Airport?
The travel and health documents required for your trip to Key West Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Key West Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from South Dakota to Key West

Compare and see reviews for airlines that fly from South Dakota to Key West with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.2 11,035 reviews	Search American Airlines flights
Delta	PriceFrom $310	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights
United Airlines	PriceFrom $378	Free Cancellation	Rating 7.4 8,998 reviews	Search United Airlines flights

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Why use momondo?

Why should I use momondo to find a flight deal from South Dakota to Key West?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from South Dakota to Key West. momondo saves you time and could save you money on your trip.

Can I find flights from South Dakota to Key West with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for South Dakota to Key West flights to just show those with flexible booking policies.

How can momondo help me find flights from South Dakota to Key West?

Once you have performed a search for South Dakota to Key West flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from South Dakota to Key West right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Key West from South Dakota. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.