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Cheap flights from Sioux Falls to Key West from $149

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux Falls to Key West departing on 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

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American Airlines Logo
1:23 pm - 10:59 pmFSD-EYW
8h 36m2 stops
American Airlines Logo
2:40 pm - 9:39 pmEYW-FSD
7h 59m1 stop
$286American Airlines
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Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
1:23 pm - 10:59 pmFSD-EYW
8h 36m2 stops
American Airlines Logo
2:40 pm - 9:39 pmEYW-FSD
7h 59m1 stop
$288American Airlines
Find Deal
Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
6:56 am - 4:05 pmFSD-EYW
8h 09m1 stop
American Airlines Logo
3:48 pm - 8:55 pmEYW-FSD
6h 07m1 stop
$311American Airlines
Find Deal
Tue, Mar 24 - Wed, Apr 1
American Airlines Logo
5:53 am - 6:30 pmFSD-EYW
11h 37m2 stops
American Airlines Logo
3:48 pm - 8:55 pmEYW-FSD
6h 07m1 stop
$316American Airlines
Find Deal
Tue, Mar 24 - Wed, Apr 1
Allegiant Air Logo
6:02 pm - 4:51 pmFSD-EYW
21h 49m2 stops
Allegiant Air Logo
10:27 pm - 6:36 pmEYW-FSD
21h 09m1 stop
$439Allegiant Air
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Thu, Jan 29 - Thu, Feb 5
United Airlines Logo
7:30 am - 3:17 pmFSD-EYW
6h 47m1 stop
United Airlines Logo
4:15 pm - 10:47 amEYW-FSD
19h 32m1 stop
$468United Airlines
Find Deal
Tue, Jan 6 - Fri, Jan 9
United Airlines Logo
7:30 am - 3:17 pmFSD-EYW
6h 47m1 stop
United Airlines Logo
4:15 pm - 10:47 amEYW-FSD
19h 32m1 stop
$470United Airlines
Find Deal
Tue, Jan 6 - Fri, Jan 9
Multiple Airlines Logo
8:26 pm - 9:17 amFSD-EYW
35h 51m2 stops
Multiple Airlines Logo
3:30 pm - 10:03 amEYW-FSD
19h 33m1 stop
$530Multiple Airlines
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Wed, Nov 26 - Sun, Nov 30
Allegiant Air Logo
7:09 pm - 4:19 pmFSD-EYW
20h 10m2 stops
Allegiant Air Logo
10:31 pm - 9:43 amEYW-FSD
12h 12m1 stop
$540Allegiant Air
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Tue, Nov 25 - Sat, Nov 29
Multiple Airlines Logo
6:02 pm - 4:51 pmFSD-EYW
21h 49m2 stops
Multiple Airlines Logo
12:15 pm - 4:07 pmEYW-FSD
28h 52m3 stops
$574Multiple Airlines
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Thu, Jan 29 - Thu, Feb 5

United Airlines flights from Sioux Falls to Key West

Our best United Airlines deals on Sioux Falls 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
$468
Find similar
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
$473
Find similar

Allegiant Air flights from Sioux Falls to Key West

Our best Allegiant Air deals on Sioux Falls to Key West flight tickets
Allegiant Air
Jan 29
FSD6:02 pmSioux Falls Joe Foss Field
21h 49m
2 stops
EYW4:51 pmKey West
Feb 5
EYW10:27 pmKey West
21h 09m
1 stop
FSD6:36 pmSioux Falls Joe Foss Field
$439
Find similar
Allegiant Air
Nov 25
FSD7:09 pmSioux Falls Joe Foss Field
20h 10m
2 stops
EYW4:19 pmKey West
Nov 29
EYW10:31 pmKey West
12h 12m
1 stop
FSD9:43 amSioux Falls Joe Foss Field
$540
Find similar
Allegiant Air
Nov 26
FSD5:54 pmSioux Falls Joe Foss Field
20h 51m
1 stop
EYW3:45 pmKey West
Nov 30
EYW3:30 pmKey West
19h 33m
1 stop
FSD10:03 amSioux Falls Joe Foss Field
$602
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Sioux Falls 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, momondo users made 832,500 searches. Data last updated November 5, 2025.
Use the filters below to find and compare flights from Sioux Falls to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 2/25

1:23 pm-10:59 pm

2 stops8h 36m

Key West

Wed 3/4

2:40 pm-9:39 pm

1 stop7h 59m

$286

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 2/25

1:23 pm-10:59 pm

2 stops8h 36m

Key West

Wed 3/4

2:40 pm-9:39 pm

1 stop7h 59m

$288

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 3/24

6:56 am-4:05 pm

1 stop8h 09m

Key West

Wed 4/1

3:48 pm-8:55 pm

1 stop6h 07m

$311

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 3/24

5:53 am-6:30 pm

2 stops11h 37m

Key West

Wed 4/1

3:48 pm-8:55 pm

1 stop6h 07m

$316

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Thu 1/29

6:02 pm-4:51 pm

2 stops21h 49m

Key West

Thu 2/5

10:27 pm-6:36 pm

1 stop21h 09m

$439

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

$468

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

Wed 11/26

8:26 pm-9:17 am

2 stops35h 51m

Key West

Sun 11/30

3:30 pm-10:03 am

1 stop19h 33m

$530

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Tue 11/25

7:09 pm-4:19 pm

2 stops20h 10m

Key West

Sat 11/29

10:31 pm-9:43 am

1 stop12h 12m

$540

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Thu 1/29

6:02 pm-4:51 pm

2 stops21h 49m

Key West

Thu 2/5

12:15 pm-4:07 pm

3 stops28h 52m

$574

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from Sioux Falls 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

What is the typical price of a round-trip flight between Sioux Falls and Key West?

What is the cheapest month to fly to Key West?

In general, July is the cheapest month to fly from Sioux Falls 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 Sioux Falls 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 Sioux Falls 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 Sioux Falls to Key West for around $660.

Can stopping save me money on Sioux Falls to Key West flights?

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

When to book flights from Sioux Falls to Key West

Are you open to changing your travel dates? Check out the ideal times to fly from Sioux Falls to Key West according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Sioux Falls to Key West (FSD to EYW) flight deals and tips

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

Direct flights

None
There are no direct flights from Sioux Falls to Key West. There are no popular flight routes from Sioux Falls to Key West.
Search flight deals

  • How far is Sioux Falls Joe Foss Field to Key West by plane?

    Sioux Falls Joe Foss Field and Key West are 1559.3 mi apart from one another. A reasonable flight in good conditions will take 6h 47m.

  • When did momondo last update prices for flights from Sioux Falls Joe Foss Field Airport to Key West Airport?

    Prices for flights from Sioux Falls Joe Foss Field Airport to Key West Airport are updated daily.

  • How many operators does momondo search for flights from Sioux Falls Joe Foss Field Airport to Key West Airport?

  • How old do you have to be to fly from Sioux Falls Joe Foss Field Airport to Key West Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux Falls Joe Foss Field Airport to Key West Airport.

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

    The required travel and health documents for your Key West Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Key West Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Sioux Falls to Key West?

Best airlines flying from Sioux Falls to Key West

Compare and see reviews for airlines that fly from Sioux Falls to Key West with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $310Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
DeltaPriceFrom $310Free CancellationRating
7.9
8,004 reviews
Search Delta flights
United AirlinesPriceFrom $378Free CancellationRating
7.4
9,002 reviews
Search United Airlines flights

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from Sioux Falls to Key West?

It is quick and easy to find Sioux Falls to Key West flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Key West that suits you.

Can I find flights from Sioux Falls to Key West with flexible booking policies on momondo?

Yes. All flights to Key West from Sioux Falls on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Sioux Falls to Key West?

Once you have performed a search for Sioux Falls 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 Sioux Falls to Key West right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Key West, momondo offers a useful price alert feature which will track prices for flights to Key West from Sioux Falls and alert you when they change.

An easier way to manage your Key West trip

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