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Cheap flights from Key West to Boston from $110

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Key West to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
10:14 am - 8:19 amEYW  Key West-BOS Boston Logan Intl
22h 05m1 stop Knoxville McGhee Tyson
Allegiant Air Logo
9:09 am - 9:04 amBOS  Boston Logan Intl-EYW Key West
23h 55m2 stops Knoxville McGhee Tyson Tampa St. Petersburg
$293Allegiant Air
Fri, Nov 6 - Sat, Nov 14
Allegiant Air Logo
9:54 am - 8:12 amEYW  Key West-BOS Boston Logan Intl
22h 18m1 stop Knoxville McGhee Tyson
Allegiant Air Logo
10:32 am - 9:04 amBOS  Boston Logan Intl-EYW Key West
22h 32m1 stop Knoxville McGhee Tyson
$295Allegiant Air
Fri, Oct 23 - Thu, Oct 29
Allegiant Air Logo
11:09 am - 10:42 amEYW  Key West-BOS Boston Logan Intl
23h 33m1 stop Knoxville McGhee Tyson
Allegiant Air Logo
9:09 am - 9:04 amBOS  Boston Logan Intl-EYW Key West
23h 55m2 stops Knoxville McGhee Tyson Tampa St. Petersburg
$296Allegiant Air
Mon, Nov 2 - Sat, Nov 14
American Airlines Logo
1:00 pm - 4:33 pmEYW  Key West-BOS Boston Logan Intl
3h 33mnonstop
American Airlines Logo
12:55 pm - 7:10 pmBOS  Boston Logan Intl-EYW Key West
6h 15m1 stop Miami
$337American Airlines
Sat, Jan 30 - Mon, Feb 1
American Airlines Logo
12:48 pm - 7:59 pmEYW  Key West-BOS Boston Logan Intl
7h 11m1 stop Charlotte Douglas
American Airlines Logo
2:13 pm - 7:33 pmBOS  Boston Logan Intl-EYW Key West
5h 20m1 stop Miami
$347American Airlines
Fri, Oct 23 - Wed, Oct 28
American Airlines Logo
7:47 pm - 12:59 amEYW  Key West-BOS Boston Logan Intl
5h 12m1 stop Miami
American Airlines Logo
5:00 am - 1:17 pmBOS  Boston Logan Intl-EYW Key West
8h 17m1 stop Miami
$347American Airlines
Tue, Sep 15 - Sun, Sep 20
Delta Logo
6:19 pm - 1:17 amEYW  Key West-BOS Boston Logan Intl
6h 58m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:30 am - 10:46 amBOS  Boston Logan Intl-EYW Key West
5h 16m1 stop Atlanta Hartsfield-Jackson
$362Delta
Wed, Sep 9 - Mon, Sep 14
Delta Logo
6:10 pm - 1:20 amEYW  Key West-BOS Boston Logan Intl
7h 10m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:30 am - 12:53 pmBOS  Boston Logan Intl-EYW Key West
7h 23m1 stop Atlanta Hartsfield-Jackson
$367Delta
Tue, Oct 20 - Mon, Oct 26
JetBlue Logo
12:29 pm - 4:39 pmEYW  Key West-BOS Boston Logan Intl
4h 10mnonstop
JetBlue Logo
8:00 am - 11:56 amBOS  Boston Logan Intl-EYW Key West
3h 56mnonstop
$387JetBlue
Fri, Oct 23 - Mon, Oct 26
JetBlue Logo
12:29 pm - 4:39 pmEYW  Key West-BOS Boston Logan Intl
4h 10mnonstop
JetBlue Logo
8:00 am - 11:56 amBOS  Boston Logan Intl-EYW Key West
3h 56mnonstop
$387JetBlue
Fri, Oct 23 - Sun, Oct 25

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American Airlines flights from Key West to Boston

Our best American Airlines deals on Key West to Boston flight tickets
American Airlines
Oct 23
EYW12:48 pmKey West
7h 11m
1 stop
BOS7:59 pmBoston Logan Intl
Oct 28
BOS2:13 pmBoston Logan Intl
5h 20m
1 stop
EYW7:33 pmKey West
$347
American Airlines
Sep 9
EYW1:47 pmKey West
10h 07m
2 stops
BOS11:54 pmBoston Logan Intl
Sep 15
BOS11:36 amBoston Logan Intl
6h 19m
1 stop
EYW5:55 pmKey West
$387
American Airlines
Dec 22
EYW8:03 pmKey West
4h 56m
1 stop
BOS12:59 amBoston Logan Intl
Dec 29
BOS6:00 amBoston Logan Intl
8h 05m
1 stop
EYW2:05 pmKey West
$402

United Airlines flights from Key West to Boston

Our best United Airlines deals on Key West to Boston flight tickets
United Airlines
Sep 10
EYW2:20 pmKey West
7h 39m
1 stop
BOS9:59 pmBoston Logan Intl
Sep 14
BOS7:30 amBoston Logan Intl
5h 59m
1 stop
EYW1:29 pmKey West
$377
United Airlines
Sep 10
EYW2:20 pmKey West
9h 39m
2 stops
BOS11:59 pmBoston Logan Intl
Sep 14
BOS7:30 amBoston Logan Intl
5h 59m
1 stop
EYW1:29 pmKey West
$382
United Airlines
Jan 30
EYW6:20 pmKey West
5h 34m
1 stop
BOS11:54 pmBoston Logan Intl
Feb 1
BOS6:00 amBoston Logan Intl
9h 06m
2 stops
EYW3:06 pmKey West
$435

momondo Fare Finder

 
Use the filters below to find and compare flights from Key West to Boston that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Fri 11/6

10:14 am-8:19 am

1 stop22h 05m

Boston Logan Intl

Sat 11/14

9:09 am-9:04 am

2 stops23h 55m

$293

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Fri 10/23

9:54 am-8:12 am

1 stop22h 18m

Boston Logan Intl

Thu 10/29

10:32 am-9:04 am

1 stop22h 32m

$295

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Mon 11/2

11:09 am-10:42 am

1 stop23h 33m

Boston Logan Intl

Sat 11/14

9:09 am-9:04 am

2 stops23h 55m

$296

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Sat 1/30

1:00 pm-4:33 pm

Nonstop3h 33m

Boston Logan Intl

Mon 2/1

12:55 pm-7:10 pm

1 stop6h 15m

$337

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Fri 10/23

12:48 pm-7:59 pm

1 stop7h 11m

Boston Logan Intl

Wed 10/28

2:13 pm-7:33 pm

1 stop5h 20m

$347

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Tue 9/15

7:47 pm-12:59 am

1 stop5h 12m

Boston Logan Intl

Sun 9/20

5:00 am-1:17 pm

1 stop8h 17m

$347

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Wed 9/9

6:19 pm-1:17 am

1 stop6h 58m

Boston Logan Intl

Mon 9/14

5:30 am-10:46 am

1 stop5h 16m

$362

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Tue 10/20

6:10 pm-1:20 am

1 stop7h 10m

Boston Logan Intl

Mon 10/26

5:30 am-12:53 pm

1 stop7h 23m

$367
Quickest round-trip

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Fri 10/23

12:29 pm-4:39 pm

Nonstop4h 10m

Boston Logan Intl

Mon 10/26

8:00 am-11:56 am

Nonstop3h 56m

$387

Key WestBoston

EYW Key West - BOS Boston Logan Intl

EYWBOS

Key West

Fri 10/23

12:29 pm-4:39 pm

Nonstop4h 10m

Boston Logan Intl

Sun 10/25

8:00 am-11:56 am

Nonstop3h 56m

$387

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?

Prices are currently low for flights on this route.

Typical prices usually range from $336 to $636.
The lowest price recently found on this route was $293.

What is the cheapest month to fly to Boston?

In general, March 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 $292. If you aren’t able to travel during the month of March, then book flights to Boston from Key West during November instead. Flights to Boston in November, while not as cheap as those in March, still average around $316.

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 Thursday when prices can be found for as low as $367. 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 $843.

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 $479 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 flights?

There is only 1 cabin class available to choose from on Key West to Boston 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?

You could potentially save up to 9% on your flight if you consider stops on a Key West to Boston flight.

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

As of August 2026, prices for Key West to Boston flights are approximately 0% 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

$110

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 $110. The best round-trip flight deal from Key West to Boston found on momondo in the last 72 hours is $293.
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

Frequently asked questions about flying from Key West to Boston

  • 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 $226Free CancellationRating
7.1
12,026 reviews
Search American Airlines flights
JetBluePriceFrom $251Free CancellationRating
7.1
3,033 reviews
Search JetBlue flights
DeltaPriceFrom $256Free CancellationRating
7.8
8,539 reviews
Search Delta flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Ogunquit
Salem
Old Orchard Beach
Laconia
Cambridge
Hampton
South Yarmouth
Revere
Plymouth
Middletown
Warwick
South Portland
Gloucester
Everett
Kennebunkport
Brockton
Seekonk
York Beach
Nashua

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.

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