Cheap Flights from Boston, MA to Key West, FL from $158

Return flight: Key West – Boston

On Cheapflightsplus.com you will find 22 connecting flights from Boston to Key West. You can compare airfare deals from 1 airlines and multiple travel sites from $158, book and save on cheap plane tickets and last minute offers. Also check out BOS-EYW flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Boston to Key West Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $158 (one-way), $271 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from Boston to Key West. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
05:35 — 11:21
05:35 — 07:19 UA1734 United Airlines
Boston — Washington D.C.
1h 1m stop
08:20 — 11:21 UA1620 United Airlines
Washington D.C. — Key West
5h 46m
including layover
Find flight
from$192
05:45 — 11:39
05:45 — 07:31 UA1734 United Airlines
Boston — Washington D.C.
54m stop
09:00 — 12:14 UA6217 United Airlines
Washington D.C. — Key West
5h 54m
including layover
Find flight
from$158
06:00 — 14:49
06:00 — 08:03 UA1414 United Airlines
Boston — Chicago
2h 32m stop
10:36 — 14:50 UA2070 United Airlines
Chicago — Key West
8h 49m
including layover
Find flight
from$169
07:12 — 13:11
07:30 — 08:58 UA570 United Airlines
Boston — Newark
1h 5m stop
08:25 — 11:50 UA1822 United Airlines
Newark — Key West
5h 59m
including layover
Find flight
from$189
07:24 — 16:03
07:05 — 10:45 UA226 United Airlines
Boston — Houston
1h 7m stop
12:09 — 16:01 UA6200 United Airlines
Houston — Key West
8h 39m
including layover
Find flight
from$619
19:28 — 11:39
+1 day
19:28 — 21:14 UA2136 United Airlines
Boston — Washington D.C.
11h 11m stop
08:25 — 11:39 UA6217 United Airlines
Washington D.C. — Key West
16h 11m
including layover
Find flight
from$402
05:45 — 14:49
05:45 — 07:31 UA1734 United Airlines
Boston — Washington D.C.
54m stop
08:25 — 09:44 UA2440 United Airlines
Washington D.C. — Chicago
51m stop
10:36 — 14:50 UA2070 United Airlines
Chicago — Key West
9h 4m
including layover
Find flight
from$174
05:45 — 18:55
05:45 — 07:29 UA1734 United Airlines
Boston — Washington D.C.
49m stop
08:25 — 11:12 UA1825 United Airlines
Washington D.C. — Miami
6h 40m stop
17:50 — 18:55 UA3094 United Airlines
Miami — Key West
13h 10m
including layover
Find flight
from$215
05:45 — 17:15
05:45 — 07:29 UA1734 United Airlines
Boston — Washington D.C.
59m stop
08:45 — 11:18 UA683 United Airlines
Washington D.C. — Tampa
4h 54m stop
16:00 — 17:15 UA3137 United Airlines
Tampa — Key West
11h 30m
including layover
Find flight
from$239
05:45 — 18:55
05:45 — 07:31 UA1734 United Airlines
Boston — Washington D.C.
5h 41m stop
13:12 — 16:03 UA761 United Airlines
Washington D.C. — Miami
1h 47m stop
17:50 — 18:55 UA3094 United Airlines
Miami — Key West
13h 10m
including layover
Find flight
from$407
05:45 — 14:20
05:45 — 07:29 UA1734 United Airlines
Boston — Washington D.C.
44m stop
08:15 — 10:42 UA379 United Airlines
Washington D.C. — Orlando
2h 13m stop
12:55 — 14:20 UA3071 United Airlines
Orlando — Key West
8h 35m
including layover
Find flight
from$476
05:45 — 14:20
05:45 — 07:31 UA1734 United Airlines
Boston — Washington D.C.
1h 29m stop
09:00 — 11:29 UA1620 United Airlines
Washington D.C. — Orlando
1h 26m stop
12:55 — 14:20 UA3071 United Airlines
Orlando — Key West
8h 35m
including layover
Find flight
from$476
06:00 — 18:55
06:00 — 08:03 UA1414 United Airlines
Boston — Chicago
42m stop
08:45 — 13:03 UA743 United Airlines
Chicago — Miami
4h 47m stop
17:50 — 18:55 UA3094 United Airlines
Miami — Key West
12h 55m
including layover
Find flight
from$215
06:00 — 17:15
06:00 — 07:29 UA1833 United Airlines
Boston — Newark
1h 1m stop
08:30 — 11:40 UA746 United Airlines
Newark — Tampa
4h 20m stop
16:00 — 17:15 UA3137 United Airlines
Tampa — Key West
11h 15m
including layover
Find flight
from$239
06:00 — 18:55
06:00 — 07:56 UA1414 United Airlines
Boston — Chicago
2h 47m stop
10:35 — 14:47 UA1775 United Airlines
Chicago — Miami
2h 46m stop
17:50 — 18:55 UA3094 United Airlines
Miami — Key West
12h 55m
including layover
Find flight
from$275
06:00 — 18:55
06:00 — 07:29 UA1833 United Airlines
Boston — Newark
5h 1m stop
11:55 — 15:02 UA477 United Airlines
Newark — Miami
2h 7m stop
17:50 — 18:55 UA3094 United Airlines
Miami — Key West
12h 55m
including layover
Find flight
from$391
06:00 — 17:15
06:00 — 07:29 UA1833 United Airlines
Boston — Newark
3h 16m stop
11:00 — 14:02 UA2074 United Airlines
Newark — Tampa
2h 9m stop
16:00 — 17:15 UA3137 United Airlines
Tampa — Key West
11h 15m
including layover
Find flight
from$463
07:05 — 18:55
07:05 — 10:45 UA226 United Airlines
Boston — Houston
1h 30m stop
12:15 — 15:49 UA796 United Airlines
Houston — Miami
2h 1m stop
17:50 — 18:55 UA3094 United Airlines
Miami — Key West
11h 50m
including layover
Find flight
from$646
09:25 — 18:55
08:45 — 10:10 UA515 United Airlines
Boston — Newark
1h 40m stop
11:55 — 15:02 UA477 United Airlines
Newark — Miami
2h 7m stop
17:50 — 18:55 UA3094 United Airlines
Miami — Key West
9h 30m
including layover
Find flight
from$318
09:35 — 18:55
09:35 — 11:21 UA2098 United Airlines
Boston — Washington D.C.
1h 51m stop
13:12 — 16:03 UA761 United Airlines
Washington D.C. — Miami
1h 47m stop
17:50 — 18:55 UA3094 United Airlines
Miami — Key West
9h 20m
including layover
Find flight
from$275
14:45 — 10:10
+1 day
14:45 — 16:28 UA214 United Airlines
Boston — Washington D.C.
5h 49m stop
22:17 — 00:45 UA1066 United Airlines
Washington D.C. — Orlando
8h stop
08:45 — 10:10 UA3075 United Airlines
Orlando — Key West
19h 25m
including layover
Find flight
from$405
19:28 — 10:10
+1 day
19:28 — 21:14 UA2136 United Airlines
Boston — Washington D.C.
1h 3m stop
22:17 — 00:45 UA1066 United Airlines
Washington D.C. — Orlando
8h stop
08:45 — 10:10 UA3075 United Airlines
Orlando — Key West
14h 42m
including layover
Find flight
from$240
*Departure and arrival times - local. Updated on December 21, 2024

Flight Information

Below we will explain in detail what the flights cost on the destination from Boston to Key West depends on and how to choose the most interesting flight option for you.

Distance between Boston and Key West is 2213 miles. Time difference between the cities is 0h. Airplanes depart 05:35 to 19:28 from 4 Boston airports and arrive 05:35 to 19:28 to 2 Key West airports. Average flight time is 11h 15m.

  • The fastest flight 5h 46m
  • Average flight time 11h 15m
  • The earliest flight 05:35
  • The latest flight 19:28
  • Distance 1376 ml

The cheapest months to travel to Key West are january (from 158 $), february (from 192 $), november (from 227 $).

The most expensive months are december (from 232 $), november (from 227 $), february (from 192 $).

What is the lowest airfare Boston to Key West?

The cheapest plane ticket found by our users is $158. This airfare is for economy class on one-way UA1734 flight by United Airlines for January 22, 2025 which leaves Logan in Boston at 05:45 am and arrives at Key West Key West Int. at 11:39.

Economy class
$158
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Business class
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First class
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Popular Airlines on the Route

The flight Boston — Key West is served by 1 regular airline . Most of the flights on this route are operated by United Airlines - 22 departures per week at the price of from $ 158 . And the most expensive tickets are offered by United Airlines airline - from $ 646.

Direct flights

There’re no direct flights on this route. Try flights with stops.

Connecting Flights

There are 22 flights with layovers on the route. The fastest connecting flight is UA1734 by United Airlines takes 5h 46m and the cheapest is UA1734 by United Airlines for $158.

  • UA - United Airlines
    from $158
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See more connecting flights

Airports

You can fly from Boston to Key West from 4 airports (Boston City Heliport, Boston RT128 Rail, Boston South Rail, Logan).

Boston airports

  • Boston City Heliport-JBC
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  • Boston RT128 Rail-ZRU
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  • Boston South Rail-ZTO
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  • Logan-BOS
    from $158
    Find

Key West airports

  • NAS-NQX
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  • Key West Int.-EYW
    Find

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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