What is the cheapest airline that flies from South Dakota to Key West?

American Airlines is the most popular carrier operating from South Dakota to Key West

What airlines fly to Key West?

American Airlines, Delta and United Airlines 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 67% 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 23m and 9h 37m, 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 August 2026, 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.

$290 Cheap Flights from South Dakota to Key West in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from South Dakota to Key West

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One-way

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Cheap round-trip flights

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5:45 pm - 7:39 amFSD Sioux Falls Joe Foss Field-EYW Key West

12h 54m1 stop Orlando Sanford Intl

9:12 am - 9:39 amEYW Key West-FSD Sioux Falls Joe Foss Field

25h 27m1 stop Tampa St. Petersburg

$290Allegiant Air

Thu, Oct 29 - Sun, Nov 1

9:59 am - 9:02 amFSD Sioux Falls Joe Foss Field-EYW Key West

22h 03m1 stop Tampa St. Petersburg

9:12 am - 9:39 amEYW Key West-FSD Sioux Falls Joe Foss Field

25h 27m1 stop Tampa St. Petersburg

$316Allegiant Air

Fri, Oct 30 - Sun, Nov 1

5:45 pm - 7:39 amFSD Sioux Falls Joe Foss Field-EYW Key West

12h 54m1 stop Orlando Sanford Intl

9:34 am - 7:49 pmEYW Key West-FSD Sioux Falls Joe Foss Field

11h 15m2 stops Orlando Sanford Intl Nashville Intl

$335Allegiant Air

Thu, Oct 29 - Mon, Nov 2

6:00 am - 7:17 pmFSD Sioux Falls Joe Foss Field-EYW Key West

12h 17m2 stops Dallas/Fort Worth Miami

1:47 pm - 12:29 amEYW Key West-FSD Sioux Falls Joe Foss Field

11h 42m2 stops Miami Chicago O'Hare Intl

$343American Airlines

Wed, Sep 16 - Tue, Sep 22

12:11 pm - 11:56 pmFSD Sioux Falls Joe Foss Field-EYW Key West

10h 45m2 stops Chicago O'Hare Intl Miami

4:00 pm - 12:31 amEYW Key West-FSD Sioux Falls Joe Foss Field

9h 31m1 stop Chicago O'Hare Intl

$351American Airlines

Wed, Jan 6 - Mon, Jan 11

6:00 am - 7:17 pmFSD Sioux Falls Joe Foss Field-EYW Key West

12h 17m2 stops Dallas/Fort Worth Miami

1:47 pm - 12:29 amEYW Key West-FSD Sioux Falls Joe Foss Field

11h 42m2 stops Miami Chicago O'Hare Intl

$356American Airlines

Wed, Sep 16 - Tue, Sep 22

5:30 am - 1:00 pmFSD Sioux Falls Joe Foss Field-EYW Key West

6h 30m1 stop Atlanta Hartsfield-Jackson

2:00 pm - 7:47 pmEYW Key West-FSD Sioux Falls Joe Foss Field

6h 47m1 stop Atlanta Hartsfield-Jackson

$394Delta

Tue, Aug 25 - Thu, Sep 10

5:30 am - 1:00 pmFSD Sioux Falls Joe Foss Field-EYW Key West

6h 30m1 stop Atlanta Hartsfield-Jackson

2:00 pm - 7:47 pmEYW Key West-FSD Sioux Falls Joe Foss Field

6h 47m1 stop Atlanta Hartsfield-Jackson

$394Delta

Tue, Aug 25 - Thu, Sep 10

7:40 am - 3:06 pmFSD Sioux Falls Joe Foss Field-EYW Key West

6h 26m1 stop Chicago O'Hare Intl

4:05 pm - 9:43 pmEYW Key West-FSD Sioux Falls Joe Foss Field

6h 38m1 stop Chicago O'Hare Intl

$595United Airlines

Wed, Jan 27 - Mon, Feb 1

7:50 am - 2:18 pmFSD Sioux Falls Joe Foss Field-EYW Key West

5h 28m1 stop Chicago O'Hare Intl

4:00 pm - 11:11 pmEYW Key West-FSD Sioux Falls Joe Foss Field

8h 11m1 stop Chicago O'Hare Intl

$722United Airlines

Sat, Oct 3 - Sat, Oct 10

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Delta flights from South Dakota to Key West

Our best Delta deals on South Dakota to Key West flight tickets

Delta

Aug 25

FSD5:30 amSioux Falls Joe Foss Field

6h 30m

1 stop

EYW1:00 pmKey West

Sep 10

EYW2:00 pmKey West

6h 47m

1 stop

FSD7:47 pmSioux Falls Joe Foss Field

$394

Delta

Sep 16

FSD8:23 amSioux Falls Joe Foss Field

10h 37m

2 stops

EYW8:00 pmKey West

Sep 22

EYW2:00 pmKey West

6h 47m

1 stop

FSD7:47 pmSioux Falls Joe Foss Field

$624

Delta

Sep 10

FSD10:40 amSioux Falls Joe Foss Field

8h 20m

2 stops

EYW8:00 pmKey West

Sep 16

EYW2:00 pmKey West

6h 47m

1 stop

FSD7:47 pmSioux Falls Joe Foss Field

$634

American Airlines flights from South Dakota to Key West

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

American Airlines

Sep 16

FSD6:00 amSioux Falls Joe Foss Field

12h 17m

2 stops

EYW7:17 pmKey West

Sep 22

EYW1:47 pmKey West

11h 42m

2 stops

FSD12:29 amSioux Falls Joe Foss Field

$343

American Airlines

Jan 6

FSD12:11 pmSioux Falls Joe Foss Field

10h 45m

2 stops

EYW11:56 pmKey West

Jan 11

EYW4:00 pmKey West

9h 31m

1 stop

FSD12:31 amSioux Falls Joe Foss Field

$351

American Airlines

Sep 16

FSD6:00 amSioux Falls Joe Foss Field

12h 17m

2 stops

EYW7:17 pmKey West

Sep 22

EYW1:47 pmKey West

11h 42m

2 stops

FSD12:29 amSioux Falls Joe Foss Field

$356

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Thu 10/29

5:45 pm-7:39 am

1 stop12h 54m

Key West

Sun 11/1

9:12 am-9:39 am

1 stop25h 27m

$290

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Fri 10/30

9:59 am-9:02 am

1 stop22h 03m

Key West

Sun 11/1

9:12 am-9:39 am

1 stop25h 27m

$316

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Thu 10/29

5:45 pm-7:39 am

1 stop12h 54m

Key West

Mon 11/2

9:34 am-7:49 pm

2 stops11h 15m

$335

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Wed 9/16

6:00 am-7:17 pm

2 stops12h 17m

Key West

Tue 9/22

1:47 pm-12:29 am

2 stops11h 42m

$343

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Wed 1/6

12:11 pm-11:56 pm

2 stops10h 45m

Key West

Mon 1/11

4:00 pm-12:31 am

1 stop9h 31m

$351

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Wed 9/16

6:00 am-7:17 pm

2 stops12h 17m

Key West

Tue 9/22

1:47 pm-12:29 am

2 stops11h 42m

$356

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Tue 8/25

5:30 am-1:00 pm

1 stop6h 30m

Key West

Thu 9/10

2:00 pm-7:47 pm

1 stop6h 47m

$394

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Tue 8/25

5:30 am-1:00 pm

1 stop6h 30m

Key West

Thu 9/10

2:00 pm-7:47 pm

1 stop6h 47m

$394

Quickest round-trip

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Wed 1/27

7:40 am-3:06 pm

1 stop6h 26m

Key West

Mon 2/1

4:05 pm-9:43 pm

1 stop6h 38m

$595

Sioux FallsKey West

FSD Sioux Falls Joe Foss Field - EYW Key West

FSDEYW

Sioux Falls Joe Foss Field

Sat 10/3

7:50 am-2:18 pm

1 stop5h 28m

Key West

Sat 10/10

4:00 pm-11:11 pm

1 stop8h 11m

$722

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted 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, April 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 $408. If you are unable to visit Key West during the month of April, then departing from South Dakota during the month October is also very affordable. Most momondo users find prices during this month for around $425.

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

You could potentially save up to 17% 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

Fastest flight time	6h 23m
Direct flights	None

The fastest flight from South Dakota to Key West takes 6h 23m

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

Frequently asked questions about flying from South Dakota to Key West

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 August 2026, 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 $338	Free Cancellation	Rating 7.1 11,929 reviews	Search American Airlines flights
Delta	PriceFrom $372	Free Cancellation	Rating 7.8 8,502 reviews	Search Delta flights
United Airlines	PriceFrom $456	Free Cancellation	Rating 7.4 10,108 reviews	Search United Airlines flights

Big Pine Key

Little Torch Key

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.

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Cheap flights from South Dakota to Key West from $290

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from South Dakota to Key West departing on 10/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from South Dakota to Key West

Our best Delta deals on South Dakota to Key West flight tickets

American Airlines flights from South Dakota to Key West

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

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

What is the cheapest month to fly to Key West?

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

What is the cheapest airline that flies from South Dakota to Key West?

What airlines fly to Key West?

How long does it take to fly to Key West?

Cheap South Dakota to Key West flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying from South Dakota to Key West

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

Traveling to a place near Key West?

Why use momondo?

An easier way to manage your Key West trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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Airports servicing Florida

Fly your favorite airline to Key West

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Key West. Availability may vary depending on flight origin and airline.

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