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Cheap flights from Louisville to Key West from $128

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Key West departing on 11/7. 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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Multiple Airlines Logo
12:20 pm - 1:30 pmSDF-EYW
25h 10m1 stop
Multiple Airlines Logo
10:27 pm - 10:07 amEYW-SDF
11h 40m1 stop
$235Multiple Airlines
Find Deal
Wed, Jan 7 - Sun, Jan 11
Multiple Airlines Logo
11:47 am - 11:05 amSDF-EYW
23h 18m2 stops
Multiple Airlines Logo
8:33 pm - 8:50 pmEYW-SDF
24h 17m1 stop
$246Multiple Airlines
Find Deal
Mon, Oct 27 - Thu, Oct 30
Multiple Airlines Logo
11:47 am - 11:05 amSDF-EYW
23h 18m2 stops
Multiple Airlines Logo
8:33 pm - 8:50 pmEYW-SDF
24h 17m1 stop
$247Multiple Airlines
Find Deal
Mon, Oct 27 - Thu, Oct 30
Allegiant Air Logo
9:40 pm - 9:02 amSDF-EYW
11h 22m1 stop
Allegiant Air Logo
3:23 pm - 7:50 pmEYW-SDF
4h 27m1 stop
$254Allegiant Air
Find Deal
Fri, Oct 31 - Sun, Nov 2
Spirit Airlines Logo
10:55 am - 1:30 pmSDF-EYW
26h 35m1 stop
Spirit Airlines Logo
2:25 pm - 9:54 amEYW-SDF
19h 29m1 stop
$258Spirit Airlines
Find Deal
Sun, Feb 1 - Fri, Feb 6
United Airlines Logo
9:00 am - 3:19 pmSDF-EYW
6h 19m1 stop
United Airlines Logo
3:02 pm - 11:32 pmEYW-SDF
8h 30m1 stop
$259United Airlines
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Fri, Nov 28 - Wed, Dec 3
American Airlines Logo
7:00 am - 1:51 pmSDF-EYW
6h 51m1 stop
American Airlines Logo
1:51 pm - 10:56 pmEYW-SDF
9h 05m1 stop
$283American Airlines
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Sat, Dec 13 - Tue, Dec 16
American Airlines Logo
7:12 am - 4:07 pmSDF-EYW
8h 55m1 stop
American Airlines Logo
7:00 am - 4:25 pmEYW-SDF
9h 25m2 stops
$288American Airlines
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Sat, Dec 13 - Tue, Dec 16
Allegiant Air Logo
8:45 pm - 8:13 pmSDF-EYW
23h 28m2 stops
Allegiant Air Logo
8:33 pm - 8:50 pmEYW-SDF
24h 17m1 stop
$318Allegiant Air
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Sun, Oct 26 - Thu, Oct 30
Delta Logo
7:09 am - 1:02 pmSDF-EYW
5h 53m1 stop
Delta Logo
7:40 am - 2:26 pmEYW-SDF
6h 46m1 stop
$354Delta
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Thu, Oct 30 - Tue, Nov 4

Allegiant Air flights from Louisville to Key West

Our best Allegiant Air deals on Louisville to Key West flight tickets
Allegiant Air
Oct 31
SDF9:40 pmLouisville Intl
11h 22m
1 stop
EYW9:02 amKey West
Nov 2
EYW3:23 pmKey West
4h 27m
1 stop
SDF7:50 pmLouisville Intl
$254
Find similar
Allegiant Air
Oct 26
SDF8:45 pmLouisville Intl
23h 28m
2 stops
EYW8:13 pmKey West
Oct 30
EYW8:33 pmKey West
24h 17m
1 stop
SDF8:50 pmLouisville Intl
$318
Find similar
Allegiant Air
Nov 16
SDF5:12 pmLouisville Intl
25h 13m
2 stops
EYW6:25 pmKey West
Nov 23
EYW10:26 pmKey West
20h 58m
1 stop
SDF7:24 pmLouisville Intl
$414
Find similar

Spirit Airlines flights from Louisville to Key West

Our best Spirit Airlines deals on Louisville to Key West flight tickets
Spirit Airlines
Feb 1
SDF10:55 amLouisville Intl
26h 35m
1 stop
EYW1:30 pmKey West
Feb 6
EYW2:25 pmKey West
19h 29m
1 stop
SDF9:54 amLouisville Intl
$258
Find similar
Spirit Airlines
Feb 1
SDF5:20 pmLouisville Intl
20h 10m
2 stops
EYW1:30 pmKey West
Feb 6
EYW2:25 pmKey West
33h 20m
3 stops
SDF11:45 pmLouisville Intl
$466
Find similar
Spirit Airlines
Feb 1
SDF5:20 pmLouisville Intl
20h 10m
2 stops
EYW1:30 pmKey West
Feb 6
EYW2:25 pmKey West
33h 20m
3 stops
SDF11:45 pmLouisville Intl
$470
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Louisville 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 October 14, 2025.
Use the filters below to find and compare flights from Louisville to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Wed 1/7

12:20 pm-1:30 pm

1 stop25h 10m

Key West

Sun 1/11

10:27 pm-10:07 am

1 stop11h 40m

$235

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Mon 10/27

11:47 am-11:05 am

2 stops23h 18m

Key West

Thu 10/30

8:33 pm-8:50 pm

1 stop24h 17m

$246

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Mon 10/27

11:47 am-11:05 am

2 stops23h 18m

Key West

Thu 10/30

8:33 pm-8:50 pm

1 stop24h 17m

$247

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Fri 10/31

9:40 pm-9:02 am

1 stop11h 22m

Key West

Sun 11/2

3:23 pm-7:50 pm

1 stop4h 27m

$254

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sun 2/1

10:55 am-1:30 pm

1 stop26h 35m

Key West

Fri 2/6

2:25 pm-9:54 am

1 stop19h 29m

$258

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Fri 11/28

9:00 am-3:19 pm

1 stop6h 19m

Key West

Wed 12/3

3:02 pm-11:32 pm

1 stop8h 30m

$259

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 12/13

7:00 am-1:51 pm

1 stop6h 51m

Key West

Tue 12/16

1:51 pm-10:56 pm

1 stop9h 05m

$283

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sat 12/13

7:12 am-4:07 pm

1 stop8h 55m

Key West

Tue 12/16

7:00 am-4:25 pm

2 stops9h 25m

$288

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Sun 10/26

8:45 pm-8:13 pm

2 stops23h 28m

Key West

Thu 10/30

8:33 pm-8:50 pm

1 stop24h 17m

$318

LouisvilleKey West

SDF - EYW

SDFEYW

Louisville Intl

Thu 10/30

7:09 am-1:02 pm

1 stop5h 53m

Key West

Tue 11/4

7:40 am-2:26 pm

1 stop6h 46m

$354

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from Louisville 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 Louisville and Key West?

What is the cheapest month to fly to Key West?

In general, August is the cheapest month to fly from Louisville to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $331. If you are unable to visit Key West during the month of August, then departing from Louisville during the month October is also very affordable. Most momondo users find prices during this month for around $388.

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 Louisville is on a Saturday. momondo users have found tickets for Saturday departures for as low as $373. 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 Louisville to Key West for around $482.

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

According to our data, the cheapest time of day to fly to Key West is at noon. momondo users have found flights departing from Louisville to Key West at noon for as low as $335. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Key West are more costly in the afternoon, with an average ticket price of $399. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to Key West?

You are more likely to see cheaper flights to Key West from Louisville when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $425 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from Louisville for as low as $329 on momondo.

When to book flights from Louisville to Key West

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

Cheap Louisville to Key West (SDF to EYW) flight deals and tips

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

Direct flights

None
There are no direct flights from Louisville to Key West. There are no popular flight routes from Louisville to Key West.
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  • How far is Louisville Intl to Key West by plane?

    Louisville Intl and Key West are 973.5 mi apart from one another. In terms of flight time, this usually takes a little over 5h 28m.

  • When did momondo last update prices for flights from Louisville Intl Airport to Key West Airport?

    Prices for flights from Louisville Intl Airport to Key West Airport were last updated today.

  • How many operators does momondo search for flights from Louisville Intl Airport to Key West Airport?

  • How old do you have to be to fly from Louisville Intl 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 Louisville Intl Airport 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.

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

Best airlines flying from Louisville to Key West

Compare and see reviews for airlines that fly from Louisville to Key West with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $258Free CancellationRating
7.9
7,975 reviews
Search Delta flights
American AirlinesPriceFrom $258Free CancellationRating
7.2
11,042 reviews
Search American Airlines flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
8,976 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 Louisville to Key West?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Louisville to Key West. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Louisville to Key West on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Key West from Louisville.

I’m not ready to book a flight from Louisville 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 Louisville and alert you when they change.

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.
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