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Cheap flights from the United States to Key West from $91

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Key West departing on 12/13. 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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Find the cheapest flights from the United States to Key West

Recent round-trip flight deals from the United States to Key West

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:05 am - 2:40 pmPHL-EYW
9h 35m1 stop
Multiple Airlines Logo
8:55 am - 9:22 pmEYW-PHL
12h 27m1 stop
$193Multiple Airlines
Find Deal
Sun, Oct 26 - Fri, Oct 31
Spirit Airlines Logo
5:00 am - 11:20 amORD-EYW
5h 20m1 stop
Spirit Airlines Logo
12:20 pm - 8:01 pmEYW-ORD
8h 41m1 stop
$198Spirit Airlines
Find Deal
Thu, Nov 27 - Thu, Dec 4
Delta Logo
5:40 am - 11:31 amBOS-EYW
5h 51m1 stop
Delta Logo
6:18 pm - 1:26 amEYW-BOS
7h 08m1 stop
$227Delta
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Mon, Nov 10 - Wed, Nov 19
United Airlines Logo
10:21 am - 1:46 pmEWR-EYW
3h 25mnonstop
United Airlines Logo
3:00 pm - 6:17 pmEYW-EWR
3h 17mnonstop
$229United Airlines
Find Deal
Sun, Nov 16 - Sat, Nov 22
United Airlines Logo
6:00 am - 1:52 pmBOS-EYW
7h 52m1 stop
United Airlines Logo
2:48 pm - 10:48 pmEYW-BOS
8h 00m1 stop
$232United Airlines
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Mon, Oct 27 - Thu, Oct 30
Delta Logo
12:10 pm - 8:06 pmBOS-EYW
7h 56m1 stop
Delta Logo
6:17 pm - 1:13 amEYW-BOS
6h 56m1 stop
$237Delta
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Thu, Oct 30 - Thu, Nov 6
American Airlines Logo
5:54 pm - 10:44 pmBWI-EYW
4h 50m1 stop
American Airlines Logo
4:40 pm - 11:43 pmEYW-BWI
7h 03m1 stop
$259American Airlines
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Thu, Dec 18 - Tue, Dec 23
American Airlines Logo
2:46 pm - 9:48 pmBWI-EYW
7h 02m1 stop
American Airlines Logo
4:18 pm - 11:35 pmEYW-BWI
7h 17m2 stops
$264American Airlines
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Wed, Nov 5 - Wed, Nov 12
Allegiant Air Logo
8:16 pm - 1:43 pmIAD-EYW
17h 27m1 stop
Allegiant Air Logo
8:45 pm - 8:21 amEYW-IAD
35h 36m2 stops
$299Allegiant Air
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Thu, Dec 18 - Wed, Dec 24
Allegiant Air Logo
8:16 pm - 1:43 pmIAD-EYW
17h 27m1 stop
Allegiant Air Logo
3:15 pm - 1:45 pmEYW-IAD
22h 30m2 stops
$316Allegiant Air
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Thu, Dec 18 - Tue, Dec 23

Spirit Airlines flights from United States to Key West

Our best Spirit Airlines deals on United States to Key West flight tickets
Spirit Airlines
Nov 27
ORD5:00 amChicago O'Hare Intl
5h 20m
1 stop
EYW11:20 amKey West
Dec 4
EYW12:20 pmKey West
8h 41m
1 stop
ORD8:01 pmChicago O'Hare Intl
$198
Find similar
Spirit Airlines
Nov 20
BWI5:40 amBaltimore/Washington
5h 40m
1 stop
EYW11:20 amKey West
Nov 27
EYW12:15 pmKey West
5h 28m
1 stop
BWI5:43 pmBaltimore/Washington
$205
Find similar
Spirit Airlines
Dec 3
ORD3:43 pmChicago O'Hare Intl
18h 37m
1 stop
EYW11:20 amKey West
Dec 6
EYW2:30 pmKey West
6h 31m
1 stop
ORD8:01 pmChicago O'Hare Intl
$208
Find similar

JetBlue flights from United States to Key West

Our best JetBlue deals on United States to Key West flight tickets
JetBlue
Nov 17
BOS8:00 amBoston Logan Intl
3h 53m
EYW11:53 amKey West
Nov 26
EYW12:49 pmKey West
3h 31m
BOS4:20 pmBoston Logan Intl
$215
Find similar
JetBlue
Oct 27
BOS8:00 amBoston Logan Intl
3h 53m
EYW11:53 amKey West
Oct 30
EYW12:45 pmKey West
3h 30m
BOS4:15 pmBoston Logan Intl
$217
Find similar
JetBlue
Nov 17
BOS8:00 amBoston Logan Intl
3h 53m
EYW11:53 amKey West
Nov 26
EYW12:49 pmKey West
3h 31m
BOS4:20 pmBoston Logan Intl
$218
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States 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 the United States to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhiladelphiaKey West

PHL - EYW

PHLEYW

Philadelphia

Sun 10/26

5:05 am-2:40 pm

1 stop9h 35m

Key West

Fri 10/31

8:55 am-9:22 pm

1 stop12h 27m

$193

ChicagoKey West

ORD - EYW

ORDEYW

Chicago O'Hare Intl

Thu 11/27

5:00 am-11:20 am

1 stop5h 20m

Key West

Thu 12/4

12:20 pm-8:01 pm

1 stop8h 41m

$198

BostonKey West

BOS - EYW

BOSEYW

Boston Logan Intl

Mon 11/10

5:40 am-11:31 am

1 stop5h 51m

Key West

Wed 11/19

6:18 pm-1:26 am

1 stop7h 08m

$227

NewarkKey West

EWR - EYW

EWREYW

Newark

Sun 11/16

10:21 am-1:46 pm

Nonstop3h 25m

Key West

Sat 11/22

3:00 pm-6:17 pm

Nonstop3h 17m

$229

BostonKey West

BOS - EYW

BOSEYW

Boston Logan Intl

Mon 10/27

6:00 am-1:52 pm

1 stop7h 52m

Key West

Thu 10/30

2:48 pm-10:48 pm

1 stop8h 00m

$232

BostonKey West

BOS - EYW

BOSEYW

Boston Logan Intl

Thu 10/30

12:10 pm-8:06 pm

1 stop7h 56m

Key West

Thu 11/6

6:17 pm-1:13 am

1 stop6h 56m

$237

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Thu 12/18

5:54 pm-10:44 pm

1 stop4h 50m

Key West

Tue 12/23

4:40 pm-11:43 pm

1 stop7h 03m

$259

BaltimoreKey West

BWI - EYW

BWIEYW

Baltimore/Washington

Wed 11/5

2:46 pm-9:48 pm

1 stop7h 02m

Key West

Wed 11/12

4:18 pm-11:35 pm

2 stops7h 17m

$264

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 12/18

8:16 pm-1:43 pm

1 stop17h 27m

Key West

Wed 12/24

8:45 pm-8:21 am

2 stops35h 36m

$299

Washington, D.C.Key West

IAD - EYW

IADEYW

Washington, D.C. Dulles Intl

Thu 12/18

8:16 pm-1:43 pm

1 stop17h 27m

Key West

Tue 12/23

3:15 pm-1:45 pm

2 stops22h 30m

$316

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 United States 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 cheapest month to fly to Key West?

In general, January is the cheapest month to fly from United States to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $402. If you are unable to visit Key West during the month of January, then departing from United States during the month September is also very affordable. Most momondo users find prices during this month for around $410.

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 United States is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $430. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from United States to Key West for around $625.

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 in the afternoon. momondo users have found flights departing from United States to Key West in the afternoon for as low as $348. 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 evening, with an average ticket price of $686. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest United States to Key West flight route?

Fly from Orlando to Key West for the best United States - Key West flight prices

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

You are more likely to see cheaper flights to Key West from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $448 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from United States for as low as $222 on momondo.

What cabin class options are available on United States to Key West flights?

There are 4 cabin classes available to choose from on United States to Key West flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United States to Key West flights?

No. A direct flight is the cheapest option for a flight between United States to Key West.

Cheap United States to Key West flight deals and tips

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

Best Price Found

$48

Fastest flight time

2h 56m

Direct flights

Every day

Airports in Key West

1 airport
The best one-way flight to Key West from United States in the past 72 hours is $48. The best round-trip flight deal from United States to Key West found on momondo in the last 72 hours is $78.
The fastest flight from United States to Key West takes 2h 56m
Direct flights go from United States to Key West every day.
There is 1 airport near Key West: Key West (EYW)
Search flight deals

  • When did momondo last update prices for flights from United States to Key West Airport?

    Prices for flights from United States to Key West Airport refresh daily.

  • How many operators does momondo search for flights from United States to Key West Airport?

  • How old do you have to be to fly from United States 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 United States 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 plane model from United States to Key West?

Best airlines flying from United States to Key West

Compare and see reviews for airlines that fly from United States to Key West with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $66Free CancellationRating
6.3
8,097 reviews
Search Spirit Airlines flights
Allegiant AirPriceFrom $80Free CancellationRating
7.2
693 reviews
Search Allegiant Air flights
United AirlinesPriceFrom $86Free CancellationRating
7.4
8,977 reviews
Search United Airlines flights
Breeze AirwaysPriceFrom $100Free CancellationRating
8.1
217 reviews
Search Breeze Airways flights
Silver AirwaysPriceFrom $104Free CancellationRating
5.8
240 reviews
Search Silver Airways flights
JetBluePriceFrom $119Free CancellationRating
7.2
2,905 reviews
Search JetBlue flights
American AirlinesPriceFrom $181Free CancellationRating
7.2
11,044 reviews
Search American Airlines flights
DeltaPriceFrom $216Free CancellationRating
7.9
7,977 reviews
Search Delta 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 United States to Key West?

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

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

Yes. momondo enables you to select and highlight flights to Key West from United States with this policy.

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

Once all potential United States to Key West flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Key West from United States. 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.

An easier way to manage your Key West trip

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