Cheap flights from Boston, MA to Key West, FL
Flights starting at $108. Choose between Silver Airways, Spirit Airlines, or JetBlue Airways to find the best price.
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Cheapest one-way trip | $177 |
|---|---|
Cheapest round-trip | $478 |
Nonstop flights in May | $108 – $227 |
Most popular airline | Silver Airways |
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The distance between Boston and Key West is 2215 km. The most popular airlines for this route are Silver Airways, Spirit Airlines, JetBlue Airways, Allegiant Air, and United Airlines. Boston and Key West have 177 direct flights per week.
Weekly direct flights
Discover the top airlines offering direct flights from Boston to Key West in the next month. You’ll find the number of daily direct flights per airline in the table.
Weekly direct flights for Sun 28.04 - Sat 04.05
| Airline | Sun 28.04 | Mon 29.04 | Tue 30.04 | Wed 01.05 | Thu 02.05 | Fri 03.05 | Sat 04.05 |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | --- | --- | --- | --- |
Weekly direct flights for Sun 05.05 - Sat 11.05
| Airline | Sun 05.05 | Mon 06.05 | Tue 07.05 | Wed 08.05 | Thu 09.05 | Fri 10.05 | Sat 11.05 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | --- | --- | --- | --- |
Weekly direct flights for Sun 12.05 - Sat 18.05
| Airline | Sun 12.05 | Mon 13.05 | Tue 14.05 | Wed 15.05 | Thu 16.05 | Fri 17.05 | Sat 18.05 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | --- | --- | --- | --- |
Weekly direct flights for Sun 19.05 - Sat 25.05
| Airline | Sun 19.05 | Mon 20.05 | Tue 21.05 | Wed 22.05 | Thu 23.05 | Fri 24.05 | Sat 25.05 |
|---|---|---|---|---|---|---|---|
| --- | --- | --- | --- | --- | --- | --- |
Check-in for a flight from Boston to Key West
| Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
|---|---|---|---|---|
| Silver Airways | SIL | 3M | No | Opens 24 days before flight Closes 2 hours before flight |
| Spirit Airlines | NKS | NK | No | Opens 24 days before flight Closes 1 hours before flight |
| JetBlue Airways | JBU | B6 | No | Opens 24 days before flight Closes 2 hours before flight |
| Allegiant Air | AAY | G4 | No | Opens 24 days before flight Closes 1 hours before flight |
| United Airlines | UAL | UA | Yes | No |
Weather in Key West
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 22°C | 20°C |
| February | 23°C | 21°C |
| March | 23°C | 22°C |
| April | 25°C | 24°C |
| May | 26°C | 25°C |
| June | 28°C | 27°C |
| July | 29°C | 28°C |
| August | 29°C | 28°C |
| September | 29°C | 28°C |
| October | 27°C | 26°C |
| November | 25°C | 24°C |
| December | 24°C | 22°C |
14 day forecast
Frequently asked questions
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