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Flights from Boston to Key West

Cheapest airlines flights from Boston to Key West

Fly from Boston to Key West with 0 carriers, including , Jetblue Airways offers the cheapest flights from Boston to Key West.

Non stop flights available! Find direct flights from Boston to Key West for the next 3 months. Book one way flights from US$97 or round trip tickets from US$234.

      • Cheapest nonstop
        BOS 08:15
        3h 55m
        Nonstop
        EYW 12:10
        Boston - Key West | Sat, Jan 10 | Jetblue Airways
        EYW 13:10
        3h 35m
        Nonstop
        BOS 16:45
        Key West - Boston | Sat, Jan 17 | American Airlines
        US$234 US$436
        46% OFF
        46% OFF
        US$436 US$234
      • BOS 08:15
        4h 17m
        Nonstop
        EYW 12:32
        Boston - Key West | Sat, Jan 10 | American Airlines
        EYW 13:10
        3h 35m
        Nonstop
        BOS 16:45
        Key West - Boston | Sat, Jan 17 | American Airlines
        US$235 US$436
        46% OFF
        46% OFF
        US$436 US$235
      • BOS 08:00
        3h 53m
        Nonstop
        EYW 11:53
        Boston - Key West | Mon, Nov 17 | Jetblue Airways
        EYW 14:50
        8h 6m
        1 stop
        BOS 22:56
        Key West - Boston | Fri, Nov 21 | American Airlines
        US$308 US$436
        28% OFF
        28% OFF
        US$436 US$308
      • BOS 10:15
        7h 8m
        1 stop
        EYW 17:23
        Boston - Key West | Mon, Nov 17 | Delta Air Lines
        EYW 14:50
        8h 6m
        1 stop
        BOS 22:56
        Key West - Boston | Fri, Nov 21 | American Airlines
        US$312
        28% OFF
        US$436 US$312
      • BOS 06:00
        9h 19m
        1 stop
        EYW 15:19
        Boston - Key West | Mon, Nov 17 | United Airlines
        EYW 15:00
        7h 47m
        1 stop
        BOS 22:47
        Key West - Boston | Fri, Nov 21 | United Airlines
        US$318
        27% OFF
        US$436 US$318
      • BOS 06:00
        7h 3m
        1 stop
        EYW 13:03
        Boston - Key West | Sat, Jan 10 | United Airlines
        EYW 13:10
        3h 35m
        Nonstop
        BOS 16:45
        Key West - Boston | Sat, Jan 17 | American Airlines
        US$322
        26% OFF
        US$436 US$322
      • BOS 08:00
        3h 53m
        Nonstop
        EYW 11:53
        Boston - Key West | Fri, Nov 28 | Jetblue Airways
        EYW 07:10
        5h 23m
        1 stop
        BOS 12:33
        Key West - Boston | Tue, Dec 2 | American Airlines
        US$328
        25% OFF
        US$436 US$328
      • BOS 06:59
        8h 29m
        1 stop
        EYW 15:28
        Boston - Key West | Fri, Nov 28 | American Airlines
        EYW 17:31
        6h 19m
        1 stop
        BOS 23:50
        Key West - Boston | Tue, Dec 2 | American Airlines
        US$340
        22% OFF
        US$436 US$340
      • BOS 06:00
        7h 59m
        1 stop
        EYW 13:59
        Boston - Key West | Mon, Nov 17 | American Airlines
        EYW 14:50
        8h 6m
        1 stop
        BOS 22:56
        Key West - Boston | Fri, Nov 21 | American Airlines
        US$349
        20% OFF
        US$436 US$349
      • BOS 09:00
        6h 6m
        1 stop
        EYW 15:06
        Boston - Key West | Mon, Dec 1 | American Airlines
        EYW 12:47
        3h 30m
        Nonstop
        BOS 16:17
        Key West - Boston | Thu, Dec 4 | Jetblue Airways
        US$358
        18% OFF
        US$436 US$358
      • BOS 13:00
        17h 25m
        1 stop
        EYW Invalid Date
        Boston - Key West | Wed, Nov 19 | Normal Airline
        EYW 15:00
        6h
        Nonstop
        BOS 16:00
        Key West - Boston | Fri, Nov 21 | Normal Airline
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Boston to Key West Flight Information

The distance between Boston and Key West is approximately 2,214.25 km. On average, a flight from Boston to Key West takes around 5 hours 17 minutes. The most popular month to fly to Key West is July. The off-season for travel is October.

Cheapest one-way flight priceUS$88
Cheapest return ticket priceUS$234
Cheapest monthOctober
Peak season for travelJuly
Flight distance2,214.25 km
Average flight time5 hours 17 minutes

When is the cheapest time to book flights from Boston to Key West?

Best time for cheap flights from Boston to Key West are between Dec 7 and Dec 14 with one way fares from US$88

Cheapest flights
From price
Search
  • 1623
  • 2330

  • Dec

    307
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • How long is a flight from Boston to Key West?

    It takes about 5 hours 17 minutes to fly from Boston to Key West.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Boston to Key West is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • The cheapest months to fly from Boston to Key West is October, when demand for travel is lower.
  • After crunching the numbers on our November flight calendar, it's currently cheapest to fly from Boston to Key West on November 28, 2025 with Jetblue Airways, with prices starting at US$235.
  • The time difference between Key West and Boston is 0h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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