
Book Cheap United flight from Boston (BOS) to Key West (EYW) from CA $267
Find The Best Day to Book a Cheap United Flights From Boston to Key West
Cheapest United Flights from Boston (BOS) to Key West (EYW)
The cheapest flights to Key West Intl. found within the past 7 days were CA $485 round trip and CA $267 one way. Prices and availability subject to change. Additional terms may apply.
Frequently asked questions
Grab a great United flight from BOS to EYW
To find a great deal on United flights with Travelocity, simply enter your origin and destination airports, pick your travel dates, and hit search. From here, you can sort by price, flight duration, and arrival/departure time. You can also filter to find nonstop flights.
Flying United Boston to Key West gives you fights to choose from. With that direct flight time of , you’ll be touching down before you know it.
Find cheap flights with United between Boston and Key West
United has a range of great fares on stacks of flights, and to find the most affordable for you, there are a few tricks you can try. Booking in advance, for example, is a great way to grab a fantastic deal. Also, choose the cheapest month, if you can. One-way flights from Boston to Key West with United are March.
The more flexible you are, the more affordable flights you’re likely to find. Consider one-way flights and connecting flights, as well as standard roundtrip and direct options. Even if you’re flying today, cheap last-minute flights are easy to find by entering your travel dates and hitting search.
Reasons to book your United flights with Travelocity
Travelocity makes it easy to book a seat, anywhere in the world. The vast inventory, fast search, and advanced filters put some of the best deals on the planet in one place. Whether you’re traveling on business, with friends, family, or on your own, take your pick from some fantastic options. And with free cancellation and pay later options, you can travel more and worry less.
Airport code | Country | Airport name | Number of flights |
|---|---|---|---|
| ORD | USA | O'Hare Intl. | 227 |
| DEN | USA | Denver Intl. | 226 |
| IAH | USA | George Bush Intercontinental | 136 |
| IAD | USA | Washington Dulles Intl. | 100 |
| SFO | USA | San Francisco Intl. | 64 |
| LAX | USA | Los Angeles Intl. | 23 |
| EWR | USA | Liberty Intl. | 20 |
| FRA | DEU | Frankfurt Intl. | 19 |
| NRT | JPN | Narita Intl. | 19 |
| PEK | CHN | Capital Intl. | 16 |
Travelers ❤️ these 🏨 after their flight to Key West

Hyatt Vacation Club at Windward Pointe, Key West
Room was very clean. Pool and hot tub were a nice feature.
Reviewed on Jan 31, 2026

Hampton Inn Key West FL
The room was spotless and the staff was very helpful and nice. Would stay there again.
Reviewed on Jan 27, 2026

DoubleTree Resort by Hilton Grand Key - Key West
Clean room and very nice staff. No complaints! We will be back!
Reviewed on Jan 31, 2026
Want more than a(n) United Flight from Boston to Key West?
Popular United Flight Routes from BOS
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