How much is a ticket from Boston to Key West?

Depending on when you travel and how far in advance you book, fares between Boston and Key West can differ a lot.

The lowest fare seen in the past 15 days was $139.

If you’re flexible with timing, consider overnight flights — they often cost less and are less crowded. Exploring multiple date and time combinations can help you find the cheapest solution.

Best airport options between Boston and Key West

If you're open to flying into or out of more than one airport, you’ll have more routes to compare.

• Airports in Boston: Boston - Logan is the only operating airport.
• Airports in Key West: Key West - International is the sole airport currently available.

Some airports offer extras like lounges, fast track, or self check-in — good to keep in mind. Comparing airports by services offered helps you balance cost and comfort.

Customize your flight from Boston to Key West

Jetcost allows you to filter by travel dates, duration, layovers, carriers, and booking providers. You’ll find direct and connecting flights, one-way or round-trip, from Delta, American, United, Expedia, eDreams, and more.

Other popular destinations

Thinking about United States? You might also consider: Las Vegas, Los Angeles, Miami, New York City, Orlando.

You can sort results by price, duration, or departure time to find the best option for you. When available, results always include both low-cost and traditional airlines.