Cheap flights from Portsmouth to Key West from $257

Travelers frequently search for route combinations, such as Portsmouth and Orlando, Punta Gorda, Fort Myers, Paris, Mexico City, Memphis, Dallas, Chicago, Washington, D.C., Philadelphia, Hartford, New York, Lima, Mumbai, Milwaukee, Syracuse, El Paso, St. Louis, Asheville, Antalya.

Travelers frequently search for route combinations, such as Key West and Tampa, Orlando, Tallahassee, Pensacola, Fort Lauderdale, Providence, Albany, Milwaukee, Detroit, Fort Myers, Spokane, Raleigh, Owensboro, Albuquerque, Cleveland, Plattsburgh, West Palm Beach, Atlanta, Flint, Provo.

The main airport in Portsmouth is Portsmouth International Airport at Pease. It is also served by Logan International, Bradley International, Rhode Island T. F. Green Int'l Airport, Portland International Jetport, Manchester–Boston Regional, Bangor International, Portsmouth International Airport at Pease, Knox County Regional, Lebanon Municipal, Augusta State.

The main airport in Key West is Key West International. It is also served by Miami International, Key West International.

Currently, you can fly between Portsmouth and Key West with BREEZE, Allegiant Air.

If you don’t have specific dates for your trip between Portsmouth and Key West, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Portsmouth and Key West, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Portsmouth. The main one is Portsmouth International Airport at Pease and other nearby airports include Logan International, Bradley International, Rhode Island T. F. Green Int'l Airport, Portland International Jetport, Manchester–Boston Regional, Bangor International, Portsmouth International Airport at Pease, Knox County Regional, Lebanon Municipal, Augusta State

There are a number of airports in and around Key West. The main one is Key West International and other nearby airports include Miami International, Key West International.