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Cheap flights from Key West to Boston from $113

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Key West to Boston departing on 3/27. 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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0 bags

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Find the cheapest flights from Key West to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 4:26 pm
EYW
-
BOS
9h 26m
1 stop
United Airlines Logo
6:00 am - 1:02 pm
BOS
-
EYW
7h 02m
1 stop
$207United Airlines
Fri, Aug 14 - Mon, Aug 17
Spirit Airlines Logo
2:25 pm - 11:44 pm
EYW
-
BOS
9h 19m
1 stop
Spirit Airlines Logo
5:27 am - 1:30 pm
BOS
-
EYW
8h 03m
1 stop
$222Spirit Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
6:35 pm - 11:57 pm
EYW
-
BOS
5h 22m
1 stop
United Airlines Logo
7:45 am - 3:00 pm
BOS
-
EYW
7h 15m
1 stop
$247United Airlines
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
9:46 am - 10:50 am
EYW
-
BOS
49h 04m
2 stops
Multiple Airlines Logo
4:22 pm - 12:26 pm
BOS
-
EYW
20h 04m
1 stop
$250Multiple Airlines
Thu, Feb 26 - Sun, Mar 1
United Airlines Logo
2:15 pm - 11:57 pm
EYW
-
BOS
9h 42m
2 stops
United Airlines Logo
7:05 am - 1:15 pm
BOS
-
EYW
6h 10m
1 stop
$252United Airlines
Thu, Feb 26 - Mon, Mar 2
Spirit Airlines Logo
12:25 pm - 11:59 pm
EYW
-
BOS
11h 34m
1 stop
Spirit Airlines Logo
5:45 am - 11:30 am
BOS
-
EYW
5h 45m
1 stop
$258Spirit Airlines
Wed, Mar 18 - Wed, Mar 25
United Airlines Logo
7:00 am - 5:56 pm
EYW
-
BOS
10h 56m
2 stops
United Airlines Logo
6:00 am - 1:02 pm
BOS
-
EYW
7h 02m
1 stop
$267United Airlines
Fri, Aug 14 - Mon, Aug 17
Multiple Airlines Logo
11:04 am - 8:40 am
EYW
-
BOS
21h 36m
1 stop
Multiple Airlines Logo
12:30 pm - 12:26 pm
BOS
-
EYW
23h 56m
1 stop
$268Multiple Airlines
Thu, Feb 26 - Sun, Mar 1
United Airlines Logo
7:00 am - 7:08 pm
EYW
-
BOS
12h 08m
2 stops
United Airlines Logo
5:35 am - 3:00 pm
BOS
-
EYW
9h 25m
2 stops
$271United Airlines
Fri, Feb 27 - Tue, Mar 3
United Airlines Logo
2:15 pm - 9:51 pm
EYW
-
BOS
7h 36m
1 stop
United Airlines Logo
12:02 pm - 5:44 pm
BOS
-
EYW
5h 42m
1 stop
$277United Airlines
Wed, Feb 25 - Sun, Mar 1

Spirit Airlines flights from Key West to Boston

Our best Spirit Airlines deals on Key West to Boston flight tickets
Spirit Airlines
Mar 5
EYW2:25 pmKey West
9h 19m
1 stop
BOS11:44 pmBoston Logan Intl
Mar 9
BOS5:27 amBoston Logan Intl
8h 03m
1 stop
EYW1:30 pmKey West
$222
Spirit Airlines
Mar 18
EYW12:25 pmKey West
11h 34m
1 stop
BOS11:59 pmBoston Logan Intl
Mar 25
BOS5:45 amBoston Logan Intl
5h 45m
1 stop
EYW11:30 amKey West
$258
Spirit Airlines
Mar 19
EYW12:25 pmKey West
11h 34m
1 stop
BOS11:59 pmBoston Logan Intl
Mar 26
BOS5:45 amBoston Logan Intl
5h 45m
1 stop
EYW11:30 amKey West
$308

United Airlines flights from Key West to Boston

Our best United Airlines deals on Key West to Boston flight tickets
United Airlines
Aug 14
EYW7:00 amKey West
9h 26m
1 stop
BOS4:26 pmBoston Logan Intl
Aug 17
BOS6:00 amBoston Logan Intl
7h 02m
1 stop
EYW1:02 pmKey West
$207
United Airlines
Feb 27
EYW6:40 pmKey West
5h 17m
1 stop
BOS11:57 pmBoston Logan Intl
Mar 3
BOS9:30 amBoston Logan Intl
6h 37m
1 stop
EYW4:07 pmKey West
$247
United Airlines
Feb 27
EYW6:40 pmKey West
5h 17m
1 stop
BOS11:57 pmBoston Logan Intl
Mar 3
BOS5:35 amBoston Logan Intl
9h 25m
2 stops
EYW3:00 pmKey West
$252

momondo Fare Finder

 
Customize your flight search to find flights from Key West to Boston 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 February 15, 2026.
Use the filters below to find and compare flights from Key West to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 8/14

7:00 am-4:26 pm

1 stop9h 26m

Boston Logan Intl

Mon 8/17

6:00 am-1:02 pm

1 stop7h 02m

$207

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 3/5

2:25 pm-11:44 pm

1 stop9h 19m

Boston Logan Intl

Mon 3/9

5:27 am-1:30 pm

1 stop8h 03m

$222

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/26

6:35 pm-11:57 pm

1 stop5h 22m

Boston Logan Intl

Mon 3/2

7:45 am-3:00 pm

1 stop7h 15m

$247

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/26

9:46 am-10:50 am

2 stops49h 04m

Boston Logan Intl

Sun 3/1

4:22 pm-12:26 pm

1 stop20h 04m

$250

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/26

2:15 pm-11:57 pm

2 stops9h 42m

Boston Logan Intl

Mon 3/2

7:05 am-1:15 pm

1 stop6h 10m

$252

Key WestBoston

EYW - BOS

EYWBOS

Key West

Wed 3/18

12:25 pm-11:59 pm

1 stop11h 34m

Boston Logan Intl

Wed 3/25

5:45 am-11:30 am

1 stop5h 45m

$258

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 8/14

7:00 am-5:56 pm

2 stops10h 56m

Boston Logan Intl

Mon 8/17

6:00 am-1:02 pm

1 stop7h 02m

$267

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/26

11:04 am-8:40 am

1 stop21h 36m

Boston Logan Intl

Sun 3/1

12:30 pm-12:26 pm

1 stop23h 56m

$268

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 2/27

7:00 am-7:08 pm

2 stops12h 08m

Boston Logan Intl

Tue 3/3

5:35 am-3:00 pm

2 stops9h 25m

$271

Key WestBoston

EYW - BOS

EYWBOS

Key West

Wed 2/25

2:15 pm-9:51 pm

1 stop7h 36m

Boston Logan Intl

Sun 3/1

12:02 pm-5:44 pm

1 stop5h 42m

$277

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 Boston from

How to get the cheapest flight ticket from Key West to Boston

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 Boston?

In general, November is the cheapest month to fly from Key West to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $301. If you aren’t able to travel during the month of November, then book flights to Boston from Key West during June instead. Flights to Boston in June, while not as cheap as those in November, still average around $314.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from Key West to Boston is on a Friday when prices can be found for as low as $331. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Monday is $583.

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

According to our data, the cheapest time of day to fly to Boston is in the afternoon. momondo users have found flights departing from Key West to Boston in the afternoon for as low as $332. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $413 per ticket.

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

Fly from Key West to Boston Logan Intl for the best Key West - Boston Logan Intl flight prices

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

There are 2 cabin classes available to choose from on Key West to Boston Logan Intl 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 Key West to Boston flights?

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

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

As of February 2026, prices for Key West to Boston flights are approximately 8% cheaper when compared to flights at the same time last year.

When to book flights from Key West to Boston

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

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

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

Fastest flight time

3h 34m

Direct flights

Every day

Airports in Boston

1 airport
The fastest flight from Key West to Boston takes 3h 34m
Direct flights go from Key West to Boston every day.
There is 1 airport in Boston. From Key West there are direct flights to Boston Logan Intl (BOS).
Search flight deals

  • How far is Key West to Boston Logan Intl by plane?

    Boston Logan Intl is 1373.6 mi away from Key West. By plane, this route typically takes 3h 34m.

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

    Prices for flights from Key West Airport to Boston Logan Intl Airport refresh daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Key West Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents you'll need for your trip to Boston Logan Intl 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 Boston Logan Intl 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 Key West to Boston?

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

Best airlines flying from Key West to Boston

Compare and see reviews for airlines that fly from Key West to Boston with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $182Free CancellationRating
7.2
11,294 reviews
Search American Airlines flights
JetBluePriceFrom $251Free CancellationRating
7.2
2,899 reviews
Search JetBlue flights

  • American Airlines Flights From Key West to Boston

    American Airlines is one of the most popular airlines flying from Key West to Boston, operating 2 flights/week on average for this route. A good American Airlines flight deal for Key West to Boston starts from $182 round-trip, up to an average price of $351. Our users have rated American Airlines at 7.2/10.

  • JetBlue Flights From Key West to Boston

    $251 is the best JetBlue flight deal from Key West to Boston found on momondo over the last 72 hours. The average JetBlue ticket price found was closer to $442, however, with flight time and availability significantly affecting the price. JetBlue (7.2/10 from 2,899 user reviews) flies into Boston from Key West 7 times in an average week so prices can vary.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Kennebunkport
Plymouth
Cambridge
South Yarmouth
Narragansett
Gloucester
Falmouth
Nashua
Brockton
Laconia
Warwick
Sturbridge
Chatham
Everett

Why use momondo?

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

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 Key West to Boston for you.

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

Yes. momondo allows you to filter the results for Key West to Boston flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Key West to Boston.

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

Price alerts on flights to Boston from Key West are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Boston trip

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