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Cheap flights from Key West to Boston from $97

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 2/26. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$189Spirit Airlines
Thu, Feb 12 - Thu, Feb 19
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
$197Spirit Airlines
Thu, Feb 12 - Thu, Feb 19
Multiple Airlines Logo
9:46 am - 10:01 pm
EYW
-
BOS
12h 15m
1 stop
Multiple Airlines Logo
11:31 am - 9:09 am
BOS
-
EYW
21h 38m
2 stops
$217Multiple Airlines
Thu, Feb 12 - Thu, Feb 19
Multiple Airlines Logo
9:46 am - 10:01 pm
EYW
-
BOS
12h 15m
1 stop
Multiple Airlines Logo
10:01 am - 9:09 am
BOS
-
EYW
23h 08m
2 stops
$224Multiple Airlines
Thu, Feb 12 - Thu, Feb 19
Spirit Airlines Logo
2:25 pm - 4:45 pm
EYW
-
BOS
26h 20m
3 stops
Spirit Airlines Logo
5:27 am - 1:30 pm
BOS
-
EYW
8h 03m
1 stop
$274Spirit Airlines
Thu, Feb 12 - Thu, Feb 19
Multiple Airlines Logo
1:06 pm - 11:37 am
EYW
-
BOS
22h 31m
1 stop
Multiple Airlines Logo
9:57 am - 1:30 pm
BOS
-
EYW
27h 33m
2 stops
$278Multiple Airlines
Fri, Feb 13 - Sun, Feb 15
Multiple Airlines Logo
1:06 pm - 10:01 pm
EYW
-
BOS
8h 55m
1 stop
Multiple Airlines Logo
6:00 am - 12:21 pm
BOS
-
EYW
30h 21m
2 stops
$284Multiple Airlines
Fri, Feb 13 - Mon, Feb 16
United Airlines Logo
2:15 pm - 11:57 pm
EYW
-
BOS
9h 42m
2 stops
United Airlines Logo
10:30 am - 10:09 pm
BOS
-
EYW
11h 39m
2 stops
$290United Airlines
Thu, Feb 12 - Thu, Feb 19
Multiple Airlines Logo
9:46 am - 10:01 pm
EYW
-
BOS
12h 15m
1 stop
Multiple Airlines Logo
6:10 pm - 12:21 pm
BOS
-
EYW
18h 11m
2 stops
$292Multiple Airlines
Thu, Feb 12 - Mon, Feb 16
United Airlines Logo
6:40 pm - 11:57 pm
EYW
-
BOS
5h 17m
1 stop
United Airlines Logo
12:05 pm - 5:44 pm
BOS
-
EYW
5h 39m
1 stop
$317United Airlines
Fri, Feb 13 - Mon, Feb 16

United Airlines flights from Key West to Boston

Our best United Airlines deals on Key West to Boston flight tickets
United Airlines
Feb 12
EYW2:15 pmKey West
9h 42m
2 stops
BOS11:57 pmBoston Logan Intl
Feb 19
BOS10:30 amBoston Logan Intl
11h 39m
2 stops
EYW10:09 pmKey West
$290
United Airlines
Feb 13
EYW6:40 pmKey West
5h 17m
1 stop
BOS11:57 pmBoston Logan Intl
Feb 16
BOS12:05 pmBoston Logan Intl
5h 39m
1 stop
EYW5:44 pmKey West
$317
United Airlines
Feb 12
EYW2:15 pmKey West
7h 36m
1 stop
BOS9:51 pmBoston Logan Intl
Feb 16
BOS12:05 pmBoston Logan Intl
5h 39m
1 stop
EYW5:44 pmKey West
$321

Spirit Airlines flights from Key West to Boston

Our best Spirit Airlines deals on Key West to Boston flight tickets
Spirit Airlines
Feb 12
EYW2:25 pmKey West
9h 19m
1 stop
BOS11:44 pmBoston Logan Intl
Feb 19
BOS5:27 amBoston Logan Intl
8h 03m
1 stop
EYW1:30 pmKey West
$189
Spirit Airlines
Feb 12
EYW2:25 pmKey West
9h 19m
1 stop
BOS11:44 pmBoston Logan Intl
Feb 19
BOS5:27 amBoston Logan Intl
8h 03m
1 stop
EYW1:30 pmKey West
$197
Spirit Airlines
Feb 12
EYW2:25 pmKey West
26h 20m
3 stops
BOS4:45 pmBoston Logan Intl
Feb 19
BOS5:27 amBoston Logan Intl
8h 03m
1 stop
EYW1:30 pmKey West
$274

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 January 29, 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

Thu 2/12

2:25 pm-11:44 pm

1 stop9h 19m

Boston Logan Intl

Thu 2/19

5:27 am-1:30 pm

1 stop8h 03m

$189

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/12

2:25 pm-11:44 pm

1 stop9h 19m

Boston Logan Intl

Thu 2/19

5:27 am-1:30 pm

1 stop8h 03m

$197

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/12

9:46 am-10:01 pm

1 stop12h 15m

Boston Logan Intl

Thu 2/19

11:31 am-9:09 am

2 stops21h 38m

$217

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/12

9:46 am-10:01 pm

1 stop12h 15m

Boston Logan Intl

Thu 2/19

10:01 am-9:09 am

2 stops23h 08m

$224

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/12

2:25 pm-4:45 pm

3 stops26h 20m

Boston Logan Intl

Thu 2/19

5:27 am-1:30 pm

1 stop8h 03m

$274

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 2/13

1:06 pm-11:37 am

1 stop22h 31m

Boston Logan Intl

Sun 2/15

9:57 am-1:30 pm

2 stops27h 33m

$278

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 2/13

1:06 pm-10:01 pm

1 stop8h 55m

Boston Logan Intl

Mon 2/16

6:00 am-12:21 pm

2 stops30h 21m

$284

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/12

2:15 pm-11:57 pm

2 stops9h 42m

Boston Logan Intl

Thu 2/19

10:30 am-10:09 pm

2 stops11h 39m

$290

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 2/12

9:46 am-10:01 pm

1 stop12h 15m

Boston Logan Intl

Mon 2/16

6:10 pm-12:21 pm

2 stops18h 11m

$292

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 2/13

6:40 pm-11:57 pm

1 stop5h 17m

Boston Logan Intl

Mon 2/16

12:05 pm-5:44 pm

1 stop5h 39m

$317

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 typical price of a round-trip flight between Key West and Boston?

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 morning. momondo users have found flights departing from Key West to Boston in the morning for as low as $331. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Boston, so prices are often more expensive at around $440 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 January 2026, prices for Key West to Boston flights are approximately 20% more expensive 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

Best Price Found

$213

Fastest flight time

3h 34m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Key West in the past 72 hours is $213. The best round-trip flight deal from Key West to Boston found on momondo in the last 72 hours is $242.
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
11,205 reviews
Search American Airlines flights
JetBluePriceFrom $277Free CancellationRating
7.2
2,892 reviews
Search JetBlue flights

  • JetBlue Flights From Key West to Boston

    JetBlue is one of the most popular airlines flying from Key West to Boston, operating 3 flights/week on average for this route. A good JetBlue flight deal for Key West to Boston starts from $277 round-trip, up to an average price of $442. Our users have rated JetBlue at 7.2/10.

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
South Yarmouth
Cambridge
Narragansett
Gloucester
Falmouth
Nashua
Brockton
Laconia
Sturbridge
Chatham
Warwick
Concord

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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