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Cheap flights from Sioux Falls to Key West from $334

This is the cheapest round-trip 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 10/9. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Sioux Falls to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
10:09 am - 9:02 am
FSD
-
EYW
21h 53m
1 stop
Allegiant Air Logo
2:54 pm - 12:25 pm
EYW
-
FSD
22h 31m
1 stop
$334Allegiant Air
Fri, Oct 9 - Mon, Oct 12
Allegiant Air Logo
10:09 am - 9:02 am
FSD
-
EYW
21h 53m
1 stop
Allegiant Air Logo
2:54 pm - 12:25 pm
EYW
-
FSD
22h 31m
1 stop
$340Allegiant Air
Fri, Oct 9 - Mon, Oct 12
American Airlines Logo
6:00 am - 7:17 pm
FSD
-
EYW
12h 17m
2 stops
American Airlines Logo
11:30 am - 6:11 pm
EYW
-
FSD
7h 41m
2 stops
$346American Airlines
Wed, Sep 16 - Wed, Sep 23
Delta Logo
8:23 am - 7:50 pm
FSD
-
EYW
10h 27m
2 stops
Delta Logo
1:57 pm - 7:49 pm
EYW
-
FSD
6h 52m
1 stop
$354Delta
Fri, Sep 18 - Tue, Sep 22
Delta Logo
5:15 am - 5:11 pm
FSD
-
EYW
10h 56m
2 stops
Delta Logo
2:35 pm - 10:12 pm
EYW
-
FSD
8h 37m
1 stop
$376Delta
Wed, Oct 28 - Sat, Oct 31
American Airlines Logo
6:00 am - 7:17 pm
FSD
-
EYW
12h 17m
2 stops
American Airlines Logo
3:40 pm - 9:55 pm
EYW
-
FSD
7h 15m
1 stop
$381American Airlines
Sat, Oct 3 - Wed, Oct 7
American Airlines Logo
7:00 am - 7:17 pm
FSD
-
EYW
11h 17m
2 stops
American Airlines Logo
11:30 am - 7:43 pm
EYW
-
FSD
9h 13m
2 stops
$386American Airlines
Wed, Sep 16 - Tue, Sep 22
United Airlines Logo
7:40 am - 3:06 pm
FSD
-
EYW
6h 26m
1 stop
United Airlines Logo
4:05 pm - 9:43 pm
EYW
-
FSD
6h 38m
1 stop
$388United Airlines
Mon, Dec 7 - Sat, Dec 12
American Airlines Logo
6:00 am - 4:18 pm
FSD
-
EYW
9h 18m
2 stops
American Airlines Logo
11:30 am - 7:59 pm
EYW
-
FSD
9h 29m
2 stops
$399American Airlines
Wed, Aug 5 - Tue, Aug 11
Delta Logo
5:15 am - 5:11 pm
FSD
-
EYW
10h 56m
2 stops
Delta Logo
2:35 pm - 10:12 pm
EYW
-
FSD
8h 37m
1 stop
$406Delta
Wed, Oct 28 - Sat, Oct 31

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Allegiant Air flights from Sioux Falls to Key West

Our best Allegiant Air deals on Sioux Falls to Key West flight tickets
Allegiant Air
Oct 9
FSD10:09 amSioux Falls Joe Foss Field
21h 53m
1 stop
EYW9:02 amKey West
Oct 12
EYW2:54 pmKey West
22h 31m
1 stop
FSD12:25 pmSioux Falls Joe Foss Field
$334
Allegiant Air
Oct 9
FSD10:09 amSioux Falls Joe Foss Field
21h 53m
1 stop
EYW9:02 amKey West
Oct 12
EYW2:54 pmKey West
22h 31m
1 stop
FSD12:25 pmSioux Falls Joe Foss Field
$340
Allegiant Air
Jul 19
FSD6:36 pmSioux Falls Joe Foss Field
19h 01m
1 stop
EYW2:37 pmKey West
Jul 25
EYW2:44 pmKey West
43h 20m
2 stops
FSD9:04 amSioux Falls Joe Foss Field
$437

American Airlines flights from Sioux Falls to Key West

Our best American Airlines deals on Sioux Falls 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 23
EYW11:30 amKey West
7h 41m
2 stops
FSD6:11 pmSioux Falls Joe Foss Field
$346
American Airlines
Oct 3
FSD6:00 amSioux Falls Joe Foss Field
12h 17m
2 stops
EYW7:17 pmKey West
Oct 7
EYW3:40 pmKey West
7h 15m
1 stop
FSD9:55 pmSioux Falls Joe Foss Field
$381
American Airlines
Sep 16
FSD7:00 amSioux Falls Joe Foss Field
11h 17m
2 stops
EYW7:17 pmKey West
Sep 22
EYW11:30 amKey West
9h 13m
2 stops
FSD7:43 pmSioux Falls Joe Foss Field
$386

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 June 15, 2026.
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

Cheapest round-trip

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 10/9

10:09 am-9:02 am

1 stop21h 53m

Key West

Mon 10/12

2:54 pm-12:25 pm

1 stop22h 31m

$334

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 10/9

10:09 am-9:02 am

1 stop21h 53m

Key West

Mon 10/12

2:54 pm-12:25 pm

1 stop22h 31m

$340

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 9/16

6:00 am-7:17 pm

2 stops12h 17m

Key West

Wed 9/23

11:30 am-6:11 pm

2 stops7h 41m

$346

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Fri 9/18

8:23 am-7:50 pm

2 stops10h 27m

Key West

Tue 9/22

1:57 pm-7:49 pm

1 stop6h 52m

$354

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 10/28

5:15 am-5:11 pm

2 stops10h 56m

Key West

Sat 10/31

2:35 pm-10:12 pm

1 stop8h 37m

$376

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Sat 10/3

6:00 am-7:17 pm

2 stops12h 17m

Key West

Wed 10/7

3:40 pm-9:55 pm

1 stop7h 15m

$381

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 9/16

7:00 am-7:17 pm

2 stops11h 17m

Key West

Tue 9/22

11:30 am-7:43 pm

2 stops9h 13m

$386
Quickest round-trip

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Mon 12/7

7:40 am-3:06 pm

1 stop6h 26m

Key West

Sat 12/12

4:05 pm-9:43 pm

1 stop6h 38m

$388

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 8/5

6:00 am-4:18 pm

2 stops9h 18m

Key West

Tue 8/11

11:30 am-7:59 pm

2 stops9h 29m

$399

Sioux FallsKey West

FSD - EYW

FSDEYW

Sioux Falls Joe Foss Field

Wed 10/28

5:15 am-5:11 pm

2 stops10h 56m

Key West

Sat 10/31

2:35 pm-10:12 pm

1 stop8h 37m

$406

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, September 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 $386. If you are unable to visit Key West during the month of September, then departing from Sioux Falls during the month October is also very affordable. Most momondo users find prices during this month for around $400.

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

You could potentially save up to 17% 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

Fastest flight time

6h 26m

Direct flights

None
The fastest flight from Sioux Falls to Key West takes 6h 26m
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

Frequently asked questions about flying from Sioux Falls to Key West

  • 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 26m.

  • 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
7.1
11,660 reviews
Search American Airlines flights
United AirlinesPriceFrom $456Free CancellationRating
7.4
9,830 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.

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