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Cheap flights from Key West to Boston from $91

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 1/29. 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
0 bags

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Cheap round-trip flights

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Multiple Airlines Logo
10:06 am - 11:19 pmEYW-BOS
13h 13m1 stop
Multiple Airlines Logo
12:10 pm - 12:26 pmBOS-EYW
24h 16m1 stop
$186Multiple Airlines
Find Deal
jue., ene. 15 - dom., ene. 18
Delta Logo
7:10 am - 2:15 pmEYW-BOS
7h 05m1 stop
Delta Logo
12:40 pm - 7:41 pmBOS-EYW
7h 01m1 stop
$217Delta
Find Deal
mié., mar. 4 - mar., mar. 10
Spirit Airlines Logo
12:20 pm - 11:57 pmEYW-BOS
11h 37m1 stop
Spirit Airlines Logo
5:45 am - 11:20 amBOS-EYW
5h 35m1 stop
$223Spirit Airlines
Find Deal
mar., dic. 30 - mar., ene. 6
Spirit Airlines Logo
12:51 pm - 11:57 pmEYW-BOS
11h 06m1 stop
Spirit Airlines Logo
3:43 pm - 1:30 pmBOS-EYW
21h 47m2 stops
$228Spirit Airlines
Find Deal
jue., ene. 15 - dom., ene. 18
Multiple Airlines Logo
8:55 am - 7:06 pmEYW-BOS
10h 11m1 stop
Multiple Airlines Logo
8:18 am - 1:30 pmBOS-EYW
29h 12m2 stops
$264Multiple Airlines
Find Deal
lun., dic. 15 - vie., dic. 19
Delta Logo
6:10 pm - 1:27 amEYW-BOS
7h 17m1 stop
Delta Logo
5:40 am - 2:07 pmBOS-EYW
8h 27m1 stop
$267Delta
Find Deal
jue., dic. 11 - lun., dic. 15
Spirit Airlines Logo
12:25 pm - 12:07 amEYW-BOS
11h 42m1 stop
Spirit Airlines Logo
5:04 pm - 11:30 amBOS-EYW
18h 26m1 stop
$269Spirit Airlines
Find Deal
mar., mar. 17 - mié., mar. 25
Multiple Airlines Logo
12:20 pm - 10:08 amEYW-BOS
21h 48m2 stops
Multiple Airlines Logo
11:55 am - 1:30 pmBOS-EYW
25h 35m1 stop
$273Multiple Airlines
Find Deal
mar., dic. 30 - mar., ene. 6
Spirit Airlines Logo
12:25 pm - 12:07 amEYW-BOS
11h 42m1 stop
Spirit Airlines Logo
5:04 pm - 11:30 amBOS-EYW
18h 26m1 stop
$281Spirit Airlines
Find Deal
mar., mar. 17 - mar., mar. 24
Delta Logo
7:35 am - 4:18 pmEYW-BOS
8h 43m1 stop
Delta Logo
2:00 pm - 7:41 pmBOS-EYW
5h 41m1 stop
$288Delta
Find Deal
jue., mar. 19 - mié., mar. 25

Delta flights from Key West to Boston

Our best Delta deals on Key West to Boston flight tickets
Delta
Mar 4
EYW7:10 amKey West
7h 05m
1 stop
BOS2:15 pmBoston Logan Intl
Mar 10
BOS12:40 pmBoston Logan Intl
7h 01m
1 stop
EYW7:41 pmKey West
$217
Find similar
Delta
Dec 11
EYW6:10 pmKey West
7h 17m
1 stop
BOS1:27 amBoston Logan Intl
Dec 15
BOS5:40 amBoston Logan Intl
8h 27m
1 stop
EYW2:07 pmKey West
$267
Find similar
Delta
Mar 19
EYW7:35 amKey West
8h 43m
1 stop
BOS4:18 pmBoston Logan Intl
Mar 25
BOS2:00 pmBoston Logan Intl
5h 41m
1 stop
EYW7:41 pmKey West
$288
Find similar

Spirit Airlines flights from Key West to Boston

Our best Spirit Airlines deals on Key West to Boston flight tickets
Spirit Airlines
Dec 30
EYW12:20 pmKey West
11h 37m
1 stop
BOS11:57 pmBoston Logan Intl
Jan 6
BOS5:45 amBoston Logan Intl
5h 35m
1 stop
EYW11:20 amKey West
$223
Find similar
Spirit Airlines
Jan 15
EYW12:51 pmKey West
11h 06m
1 stop
BOS11:57 pmBoston Logan Intl
Jan 18
BOS3:43 pmBoston Logan Intl
21h 47m
2 stops
EYW1:30 pmKey West
$228
Find similar
Spirit Airlines
Mar 17
EYW12:25 pmKey West
11h 42m
1 stop
BOS12:07 amBoston Logan Intl
Mar 25
BOS5:04 pmBoston Logan Intl
18h 26m
1 stop
EYW11:30 amKey West
$269
Find similar

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 diciembre 1, 2025.
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

jue. 1/15

10:06 am-11:19 pm

1 stop13h 13m

Boston Logan Intl

dom. 1/18

12:10 pm-12:26 pm

1 stop24h 16m

$186

Key WestBoston

EYW - BOS

EYWBOS

Key West

mié. 3/4

7:10 am-2:15 pm

1 stop7h 05m

Boston Logan Intl

mar. 3/10

12:40 pm-7:41 pm

1 stop7h 01m

$217

Key WestBoston

EYW - BOS

EYWBOS

Key West

mar. 12/30

12:20 pm-11:57 pm

1 stop11h 37m

Boston Logan Intl

mar. 1/6

5:45 am-11:20 am

1 stop5h 35m

$223

Key WestBoston

EYW - BOS

EYWBOS

Key West

jue. 1/15

12:51 pm-11:57 pm

1 stop11h 06m

Boston Logan Intl

dom. 1/18

3:43 pm-1:30 pm

2 stops21h 47m

$228

Key WestBoston

EYW - BOS

EYWBOS

Key West

lun. 12/15

8:55 am-7:06 pm

1 stop10h 11m

Boston Logan Intl

vie. 12/19

8:18 am-1:30 pm

2 stops29h 12m

$264

Key WestBoston

EYW - BOS

EYWBOS

Key West

jue. 12/11

6:10 pm-1:27 am

1 stop7h 17m

Boston Logan Intl

lun. 12/15

5:40 am-2:07 pm

1 stop8h 27m

$267

Key WestBoston

EYW - BOS

EYWBOS

Key West

mar. 3/17

12:25 pm-12:07 am

1 stop11h 42m

Boston Logan Intl

mié. 3/25

5:04 pm-11:30 am

1 stop18h 26m

$269

Key WestBoston

EYW - BOS

EYWBOS

Key West

mar. 12/30

12:20 pm-10:08 am

2 stops21h 48m

Boston Logan Intl

mar. 1/6

11:55 am-1:30 pm

1 stop25h 35m

$273

Key WestBoston

EYW - BOS

EYWBOS

Key West

mar. 3/17

12:25 pm-12:07 am

1 stop11h 42m

Boston Logan Intl

mar. 3/24

5:04 pm-11:30 am

1 stop18h 26m

$281

Key WestBoston

EYW - BOS

EYWBOS

Key West

jue. 3/19

7:35 am-4:18 pm

1 stop8h 43m

Boston Logan Intl

mié. 3/25

2:00 pm-7:41 pm

1 stop5h 41m

$288

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, June 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 $314. If you aren’t able to travel during the month of June, then book flights to Boston from Key West during August instead. Flights to Boston in August, while not as cheap as those in June, 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 Friday when prices can be found for as low as $385. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $681.

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. At noon is when there is more demand to fly to Boston, so prices are often more expensive at around $493 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 is only 1 cabin class 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 December 2025, prices for Key West to Boston flights are approximately 7% 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

Best Price Found

$201

Fastest flight time

3h 30m

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 $201. The best round-trip flight deal from Key West to Boston found on momondo in the last 72 hours is $440.
The fastest flight from Key West to Boston takes 3h 30m
Direct flights go from Key West to Boston every day.
There is 1 airport near Boston: 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 30m.

  • 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
11,040 reviews
Search American Airlines flights
JetBluePriceFrom $251Free CancellationRating
7.2
2,904 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 1 flight/week on average for this route. A good JetBlue flight deal for Key West to Boston starts from $251 round-trip, up to an average price of $474. 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
Plymouth
Kennebunkport
South Yarmouth
Cambridge
Narragansett
Nashua
Gloucester
Falmouth
Laconia
Brockton
Concord
Everett
Sturbridge
Chatham

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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