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Cheap flights from Key West to Boston from $117

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 11/13. 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
1 adult, Economy, 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.
Multiple Airlines Logo
10:14 am - 8:19 am
EYW
-
BOS
22h 05m
1 stop
Multiple Airlines Logo
12:35 pm - 9:24 am
BOS
-
EYW
20h 49m
2 stops
$309Multiple Airlines
Fri, Nov 6 - Tue, Nov 10
Multiple Airlines Logo
10:31 am - 9:05 am
EYW
-
BOS
22h 34m
1 stop
Multiple Airlines Logo
12:45 pm - 7:13 pm
BOS
-
EYW
30h 28m
2 stops
$312Multiple Airlines
Fri, Aug 14 - Sat, Aug 22
Multiple Airlines Logo
10:31 am - 9:05 am
EYW
-
BOS
22h 34m
1 stop
Multiple Airlines Logo
10:04 am - 9:10 am
BOS
-
EYW
23h 06m
1 stop
$320Multiple Airlines
Fri, Aug 14 - Sat, Aug 22
American Airlines Logo
2:31 pm - 10:50 pm
EYW
-
BOS
8h 19m
1 stop
American Airlines Logo
6:06 am - 1:05 pm
BOS
-
EYW
6h 59m
1 stop
$347American Airlines
Mon, Aug 24 - Fri, Aug 28
American Airlines Logo
7:57 pm - 12:59 am
EYW
-
BOS
5h 02m
1 stop
American Airlines Logo
7:15 am - 1:03 pm
BOS
-
EYW
5h 48m
1 stop
$347American Airlines
Fri, Nov 6 - Tue, Nov 10
American Airlines Logo
7:52 pm - 12:59 am
EYW
-
BOS
5h 07m
1 stop
American Airlines Logo
5:50 am - 1:47 pm
BOS
-
EYW
7h 57m
1 stop
$347American Airlines
Tue, Dec 22 - Tue, Dec 29
Delta Logo
6:15 pm - 1:25 am
EYW
-
BOS
7h 10m
1 stop
Delta Logo
2:00 pm - 7:57 pm
BOS
-
EYW
5h 57m
1 stop
$357Delta
Wed, Aug 26 - Sat, Aug 29
Delta Logo
6:19 pm - 1:17 am
EYW
-
BOS
6h 58m
1 stop
Delta Logo
8:55 am - 5:23 pm
BOS
-
EYW
8h 28m
1 stop
$357Delta
Mon, Sep 14 - Sat, Sep 19
JetBlue Logo
12:50 pm - 4:39 pm
EYW
-
BOS
3h 49mnonstop
JetBlue Logo
8:00 am - 11:59 am
BOS
-
EYW
3h 59mnonstop
$399JetBlue
Fri, Oct 16 - Mon, Oct 19
JetBlue Logo
12:45 pm - 4:15 pm
EYW
-
BOS
3h 30mnonstop
JetBlue Logo
8:00 am - 11:53 am
BOS
-
EYW
3h 53mnonstop
$519JetBlue
Thu, Oct 29 - Mon, Nov 2

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United Airlines flights from Key West to Boston

Our best United Airlines deals on Key West to Boston flight tickets
United Airlines
Dec 25
EYW1:30 pmKey West
9h 19m
2 stops
BOS10:49 pmBoston Logan Intl
Dec 30
BOS5:45 amBoston Logan Intl
6h 49m
1 stop
EYW12:34 pmKey West
$352
United Airlines
Nov 6
EYW2:50 pmKey West
9h 09m
2 stops
BOS11:59 pmBoston Logan Intl
Nov 10
BOS5:30 amBoston Logan Intl
9h 59m
2 stops
EYW3:29 pmKey West
$392
United Airlines
Dec 22
EYW1:30 pmKey West
5h 24m
1 stop
BOS6:54 pmBoston Logan Intl
Dec 29
BOS7:40 pmBoston Logan Intl
16h 54m
2 stops
EYW12:34 pmKey West
$553

American Airlines flights from Key West to Boston

Our best American Airlines deals on Key West to Boston flight tickets
American Airlines
Dec 22
EYW7:52 pmKey West
5h 07m
1 stop
BOS12:59 amBoston Logan Intl
Dec 29
BOS5:50 amBoston Logan Intl
7h 57m
1 stop
EYW1:47 pmKey West
$347
American Airlines
Dec 22
EYW3:25 pmKey West
3h 34m
BOS6:59 pmBoston Logan Intl
Dec 29
BOS5:50 amBoston Logan Intl
7h 57m
1 stop
EYW1:47 pmKey West
$357
American Airlines
Aug 14
EYW12:06 pmKey West
6h 36m
1 stop
BOS6:42 pmBoston Logan Intl
Aug 19
BOS5:27 amBoston Logan Intl
7h 28m
1 stop
EYW12:55 pmKey West
$377

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 July 30, 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

Cheapest round-trip

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 11/6

10:14 am-8:19 am

1 stop22h 05m

Boston Logan Intl

Tue 11/10

12:35 pm-9:24 am

2 stops20h 49m

$309

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 8/14

10:31 am-9:05 am

1 stop22h 34m

Boston Logan Intl

Sat 8/22

12:45 pm-7:13 pm

2 stops30h 28m

$312

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 8/14

10:31 am-9:05 am

1 stop22h 34m

Boston Logan Intl

Sat 8/22

10:04 am-9:10 am

1 stop23h 06m

$320

Key WestBoston

EYW - BOS

EYWBOS

Key West

Mon 8/24

2:31 pm-10:50 pm

1 stop8h 19m

Boston Logan Intl

Fri 8/28

6:06 am-1:05 pm

1 stop6h 59m

$347

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 11/6

7:57 pm-12:59 am

1 stop5h 02m

Boston Logan Intl

Tue 11/10

7:15 am-1:03 pm

1 stop5h 48m

$347

Key WestBoston

EYW - BOS

EYWBOS

Key West

Tue 12/22

7:52 pm-12:59 am

1 stop5h 07m

Boston Logan Intl

Tue 12/29

5:50 am-1:47 pm

1 stop7h 57m

$347

Key WestBoston

EYW - BOS

EYWBOS

Key West

Wed 8/26

6:15 pm-1:25 am

1 stop7h 10m

Boston Logan Intl

Sat 8/29

2:00 pm-7:57 pm

1 stop5h 57m

$357

Key WestBoston

EYW - BOS

EYWBOS

Key West

Mon 9/14

6:19 pm-1:17 am

1 stop6h 58m

Boston Logan Intl

Sat 9/19

8:55 am-5:23 pm

1 stop8h 28m

$357

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 10/16

12:50 pm-4:39 pm

Nonstop3h 49m

Boston Logan Intl

Mon 10/19

8:00 am-11:59 am

Nonstop3h 59m

$399
Quickest round-trip

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 10/29

12:45 pm-4:15 pm

Nonstop3h 30m

Boston Logan Intl

Mon 11/2

8:00 am-11:53 am

Nonstop3h 53m

$519

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 $286. If you aren’t able to travel during the month of November, then book flights to Boston from Key West during August instead. Flights to Boston in August, while not as cheap as those in November, still average around $306.

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 Wednesday when prices can be found for as low as $292. 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 $497 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?

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 July 2026, prices for Key West to Boston flights are approximately 5% 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

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
11,842 reviews
Search American Airlines flights
DeltaPriceFrom $239Free CancellationRating
7.8
8,487 reviews
Search Delta flights
JetBluePriceFrom $251Free CancellationRating
7.1
3,028 reviews
Search JetBlue flights

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
Laconia
Cambridge
South Yarmouth
Plymouth
York Beach
Revere
Kennebunkport
Gloucester
Warwick
Middletown
South Portland
Brockton
Everett
Falmouth
Seekonk

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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