Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Key West to Boston from $96

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 1/28. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Key West to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
1:05 pm - 4:40 pmEYW-BOS
3h 35mnonstop
JetBlue Logo
8:15 am - 12:10 pmBOS-EYW
3h 55mnonstop
$191JetBlue
Find Deal
Thu, Jan 29 - Wed, Feb 4
Delta Logo
6:08 pm - 1:04 amEYW-BOS
6h 56m1 stop
Delta Logo
11:12 am - 7:42 pmBOS-EYW
8h 30m1 stop
$217Delta
Find Deal
Thu, Jan 29 - Wed, Feb 4
Delta Logo
6:18 pm - 1:30 amEYW-BOS
7h 12m1 stop
Delta Logo
5:40 am - 11:31 amBOS-EYW
5h 51m1 stop
$247Delta
Find Deal
Fri, Nov 14 - Mon, Nov 17
JetBlue Logo
1:12 pm - 4:48 pmEYW-BOS
3h 36mnonstop
JetBlue Logo
8:24 am - 12:17 pmBOS-EYW
3h 53mnonstop
$265JetBlue
Find Deal
Sat, Dec 20 - Thu, Jan 1
Spirit Airlines Logo
2:25 pm - 12:40 amEYW-BOS
10h 15m1 stop
Spirit Airlines Logo
6:57 pm - 1:30 pmBOS-EYW
18h 33m2 stops
$271Spirit Airlines
Find Deal
Thu, Jan 29 - Wed, Feb 4
American Airlines Logo
8:00 am - 3:24 pmEYW-BOS
7h 24m1 stop
American Airlines Logo
10:44 am - 2:55 pmBOS-EYW
4h 11mnonstop
$284American Airlines
Find Deal
Sat, Dec 20 - Mon, Dec 22
Spirit Airlines Logo
2:25 pm - 12:40 amEYW-BOS
10h 15m1 stop
Spirit Airlines Logo
6:15 am - 1:30 pmBOS-EYW
31h 15m3 stops
$288Spirit Airlines
Find Deal
Thu, Jan 29 - Wed, Feb 4
American Airlines Logo
4:40 pm - 10:37 pmEYW-BOS
5h 57m1 stop
American Airlines Logo
10:44 am - 2:55 pmBOS-EYW
4h 11mnonstop
$299American Airlines
Find Deal
Sat, Dec 20 - Thu, Jan 1
Allegiant Air Logo
9:36 pm - 9:43 amEYW-BOS
36h 07m2 stops
Allegiant Air Logo
9:02 am - 1:15 pmBOS-EYW
28h 13m1 stop
$312Allegiant Air
Find Deal
Sun, Nov 16 - Thu, Nov 20
Allegiant Air Logo
12:32 pm - 8:02 amEYW-BOS
19h 30m1 stop
Allegiant Air Logo
9:02 am - 1:15 pmBOS-EYW
28h 13m1 stop
$318Allegiant Air
Find Deal
Sun, Nov 16 - Thu, Nov 20

JetBlue flights from Key West to Boston

Our best JetBlue deals on Key West to Boston flight tickets
JetBlue
Jan 29
EYW1:05 pmKey West
3h 35m
BOS4:40 pmBoston Logan Intl
Feb 4
BOS8:15 amBoston Logan Intl
3h 55m
EYW12:10 pmKey West
$191
Find similar
JetBlue
Dec 20
EYW1:12 pmKey West
3h 36m
BOS4:48 pmBoston Logan Intl
Jan 1
BOS8:24 amBoston Logan Intl
3h 53m
EYW12:17 pmKey West
$265
Find similar
JetBlue
Nov 14
EYW12:45 pmKey West
3h 30m
BOS4:15 pmBoston Logan Intl
Nov 17
BOS8:00 amBoston Logan Intl
3h 53m
EYW11:53 amKey West
$310
Find similar

Delta flights from Key West to Boston

Our best Delta deals on Key West to Boston flight tickets
Delta
Jan 29
EYW6:08 pmKey West
6h 56m
1 stop
BOS1:04 amBoston Logan Intl
Feb 4
BOS11:12 amBoston Logan Intl
8h 30m
1 stop
EYW7:42 pmKey West
$217
Find similar
Delta
Nov 14
EYW6:18 pmKey West
7h 12m
1 stop
BOS1:30 amBoston Logan Intl
Nov 17
BOS5:40 amBoston Logan Intl
5h 51m
1 stop
EYW11:31 amKey West
$247
Find similar
Delta
Dec 20
EYW7:25 amKey West
7h 22m
1 stop
BOS2:47 pmBoston Logan Intl
Jan 1
BOS7:00 amBoston Logan Intl
6h 37m
1 stop
EYW1:37 pmKey West
$260
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 November 2, 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

Thu 1/29

1:05 pm-4:40 pm

Nonstop3h 35m

Boston Logan Intl

Wed 2/4

8:15 am-12:10 pm

Nonstop3h 55m

$191

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 1/29

6:08 pm-1:04 am

1 stop6h 56m

Boston Logan Intl

Wed 2/4

11:12 am-7:42 pm

1 stop8h 30m

$217

Key WestBoston

EYW - BOS

EYWBOS

Key West

Fri 11/14

6:18 pm-1:30 am

1 stop7h 12m

Boston Logan Intl

Mon 11/17

5:40 am-11:31 am

1 stop5h 51m

$247

Key WestBoston

EYW - BOS

EYWBOS

Key West

Sat 12/20

1:12 pm-4:48 pm

Nonstop3h 36m

Boston Logan Intl

Thu 1/1

8:24 am-12:17 pm

Nonstop3h 53m

$265

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 1/29

2:25 pm-12:40 am

1 stop10h 15m

Boston Logan Intl

Wed 2/4

6:57 pm-1:30 pm

2 stops18h 33m

$271

Key WestBoston

EYW - BOS

EYWBOS

Key West

Sat 12/20

8:00 am-3:24 pm

1 stop7h 24m

Boston Logan Intl

Mon 12/22

10:44 am-2:55 pm

Nonstop4h 11m

$284

Key WestBoston

EYW - BOS

EYWBOS

Key West

Thu 1/29

2:25 pm-12:40 am

1 stop10h 15m

Boston Logan Intl

Wed 2/4

6:15 am-1:30 pm

3 stops31h 15m

$288

Key WestBoston

EYW - BOS

EYWBOS

Key West

Sat 12/20

4:40 pm-10:37 pm

1 stop5h 57m

Boston Logan Intl

Thu 1/1

10:44 am-2:55 pm

Nonstop4h 11m

$299

Key WestBoston

EYW - BOS

EYWBOS

Key West

Sun 11/16

9:36 pm-9:43 am

2 stops36h 07m

Boston Logan Intl

Thu 11/20

9:02 am-1:15 pm

1 stop28h 13m

$312

Key WestBoston

EYW - BOS

EYWBOS

Key West

Sun 11/16

12:32 pm-8:02 am

1 stop19h 30m

Boston Logan Intl

Thu 11/20

9:02 am-1:15 pm

1 stop28h 13m

$318

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 Thursday when prices can be found for as low as $300. 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 $551 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.

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

As of November 2025, prices for Key West to Boston flights are approximately 37% 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

$163

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 $163. The best round-trip flight deal from Key West to Boston found on momondo in the last 72 hours is $332.
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 $226Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights
DeltaPriceFrom $239Free CancellationRating
7.9
7,999 reviews
Search Delta flights
JetBluePriceFrom $251Free CancellationRating
7.2
2,906 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 5 flights/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 $498. 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
Cambridge
South Yarmouth
Narragansett
Nashua
Gloucester
Falmouth
Laconia
Brockton
Concord
Everett
Sturbridge
Warwick

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 12/2
Tue 12/9
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States