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Cheap flights from Boston to Key West from $159

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Key West departing on 11/4. 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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Find the cheapest flights from Boston to Key West

Cheap round-trip flights

Logo
8:39 pm - 3:30 pmBOS-EYW
18h 51m2 stops
Logo
4:20 pm - 8:11 amEYW-BOS
15h 51m1 stop
$291
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Wed, Aug 6 - Sun, Aug 10
JetBlue Logo
8:15 am - 11:53 amBOS-EYW
3h 38mnonstop
JetBlue Logo
12:40 pm - 4:06 pmEYW-BOS
3h 26mnonstop
$297JetBlue
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Sat, Oct 25 - Thu, Oct 30
American Airlines Logo
12:00 pm - 6:30 pmBOS-EYW
6h 30m1 stop
American Airlines Logo
12:30 pm - 4:02 pmEYW-BOS
3h 32mnonstop
$307American Airlines
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Sat, Dec 6 - Sat, Dec 13
Delta Logo
5:35 am - 10:51 amBOS-EYW
5h 16m1 stop
Delta Logo
6:22 pm - 1:20 amEYW-BOS
6h 58m1 stop
$317Delta
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Tue, Aug 5 - Tue, Aug 12
American Airlines Logo
10:35 am - 7:07 pmBOS-EYW
8h 32m2 stops
American Airlines Logo
1:13 pm - 6:41 pmEYW-BOS
5h 28m1 stop
$322American Airlines
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Wed, Aug 6 - Tue, Aug 19
Delta Logo
5:35 am - 10:51 amBOS-EYW
5h 16m1 stop
Delta Logo
6:22 pm - 1:20 amEYW-BOS
6h 58m1 stop
$327Delta
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Tue, Aug 5 - Thu, Aug 21
JetBlue Logo
7:30 am - 11:22 amBOS-EYW
3h 52mnonstop
JetBlue Logo
12:07 pm - 3:38 pmEYW-BOS
3h 31mnonstop
$332JetBlue
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Fri, Jan 2 - Fri, Jan 9
United Airlines Logo
6:00 am - 2:09 pmBOS-EYW
8h 09m1 stop
United Airlines Logo
3:05 pm - 11:42 pmEYW-BOS
8h 37m2 stops
$337United Airlines
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Wed, Nov 12 - Wed, Nov 19
United Airlines Logo
5:30 am - 3:19 pmBOS-EYW
9h 49m2 stops
United Airlines Logo
3:05 pm - 11:42 pmEYW-BOS
8h 37m2 stops
$338United Airlines
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Sun, Nov 16 - Thu, Nov 20
Logo
1:55 pm - 9:00 amBOS-EYW
19h 05m2 stops
Logo
3:30 pm - 8:08 amEYW-BOS
16h 38m2 stops
$339
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Sun, Oct 19 - Thu, Oct 23

JetBlue flights from Boston to Key West

Our best JetBlue deals on Boston to Key West flight tickets
JetBlue
Oct 25
BOS8:15 amBoston Logan Intl
3h 38m
EYW11:53 amKey West
Oct 30
EYW12:40 pmKey West
3h 26m
BOS4:06 pmBoston Logan Intl
$297
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JetBlue
Jan 2
BOS7:30 amBoston Logan Intl
3h 52m
EYW11:22 amKey West
Jan 9
EYW12:07 pmKey West
3h 31m
BOS3:38 pmBoston Logan Intl
$332
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JetBlue
Dec 23
BOS7:30 amBoston Logan Intl
3h 52m
EYW11:22 amKey West
Dec 24
EYW12:07 pmKey West
3h 31m
BOS3:38 pmBoston Logan Intl
$367
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Delta flights from Boston to Key West

Our best Delta deals on Boston to Key West flight tickets
Delta
Aug 5
BOS5:35 amBoston Logan Intl
5h 16m
1 stop
EYW10:51 amKey West
Aug 12
EYW6:22 pmKey West
6h 58m
1 stop
BOS1:20 amBoston Logan Intl
$317
Find similar
Delta
Aug 5
BOS5:35 amBoston Logan Intl
5h 16m
1 stop
EYW10:51 amKey West
Aug 21
EYW6:22 pmKey West
6h 58m
1 stop
BOS1:20 amBoston Logan Intl
$327
Find similar
Delta
Aug 5
BOS5:35 amBoston Logan Intl
5h 16m
1 stop
EYW10:51 amKey West
Aug 20
EYW7:00 amKey West
15h 08m
2 stops
BOS10:08 pmBoston Logan Intl
$340
Find similar

See travel insights to Key West from

How to get the cheapest flight ticket from Boston 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 Boston to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $336. If you are unable to visit Key West during the month of January, then departing from Boston during the month September is also very affordable. Most momondo users find prices during this month for around $338.

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 Boston is on a Saturday. momondo users have found tickets for Saturday departures for as low as $443. 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 Boston to Key West for around $664.

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 Boston to Key West at noon for as low as $443. 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 morning, with an average ticket price of $495. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Boston Logan Intl to Key West flight route?

Fly from Boston Logan Intl to Key West for the best Boston Logan Intl - 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 Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $424 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from Boston for as low as $352 on momondo.

What cabin class options are available on Boston Logan Intl to Key West flights?

There are 3 cabin classes available to choose from on Boston Logan Intl 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 Boston to Key West flights?

You could potentially save up to 50% on your flight if you consider stops on a Boston to Key West flight.

How have Boston to Key West flight prices changed over time?

As of July 2025, prices for Boston to Key West flights are approximately 31% cheaper when compared to flights at the same time last year.

When to book flights from Boston to Key West

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

Cheap Boston to Key West (BOS to EYW) flight deals and tips

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

Best Price Found

$159

Fastest flight time

3h 38m

Direct flights

Every day

Airports in Key West

1 airport
The best one-way flight to Key West from Boston in the past 72 hours is $159. The best round-trip flight deal from Boston to Key West found on momondo in the last 72 hours is $291.
The fastest flight from Boston to Key West takes 3h 38m
Direct flights go from Boston to Key West every day.
There is 1 airport near Key West: Key West (EYW)
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  • How far is Boston Logan Intl to Key West by plane?

    Key West is 1373.6 mi away from Boston Logan Intl. Flights usually cover this in 3h 38m, depending on flying conditions and air traffic around both airports.

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

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

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

  • How old do you have to be to fly from Boston Logan Intl Airport to Key West Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Boston Logan Intl Airport to Key West Airport.

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

    The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Boston to Key West?

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

Best airlines flying from Boston to Key West

Compare and see reviews for airlines that fly from Boston to Key West with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $66Free CancellationRating
6.3
8,047 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $145Free CancellationRating
7.4
8,856 reviews
Search United Airlines flights
JetBluePriceFrom $211Free CancellationRating
7.3
2,908 reviews
Search JetBlue flights
DeltaPriceFrom $216Free CancellationRating
8.0
7,953 reviews
Search Delta flights
American AirlinesPriceFrom $260Free CancellationRating
7.2
10,000 reviews
Search American 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 Boston to Key West?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Boston to Key West for you.

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

momondo does allow users to show only those flights to Key West from Boston which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Boston and Key West by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

An easier way to manage your Key West trip

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