Cheap flights from Allentown to Denver from $146

Travelers frequently search for route combinations, such as Allentown and Orlando, Tampa, Punta Gorda, Sarasota, Toronto, Nassau, Medellín, Fort Lauderdale, İzmir, Elmira, Ciudad Obregón, Provo, Manchester, Chattanooga, Charleston, Guadalajara, Dresden, Dubai, Algiers, Odessa.

Travelers frequently search for route combinations, such as Denver and Mexico City, Chicago, Houston, Los Angeles, Washington, D.C., New York, Miami, Orlando, Atlanta, Tokyo, Dallas, Guadalajara, San Diego, Minneapolis, London, Phoenix, San Francisco, Salt Lake City, Austin, Portland.

The main airport in Allentown is Lehigh Valley International. It is also served by John F. Kennedy International, Newark Liberty International, LaGuardia, Philadelphia International, Baltimore–Washington International, Ronald Reagan Washington National, New York Stewart International Airport, Long Island MacArthur, Lehigh Valley International, Atlantic City International.

The main airport in Denver is Denver International. It is also served by Colorado Springs, Pueblo Memorial, Eagle County Regional, Laramie Regional, Cheyenne Regional.

Currently, you can fly between Allentown and Denver with Allegiant Air, Frontier Airlines, United Airlines, Spirit Airlines, JetBlue Airways.

If you don’t have specific dates for your trip between Allentown and Denver, 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 Allentown and Denver, 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 Allentown. The main one is Lehigh Valley International and other nearby airports include John F. Kennedy International, Newark Liberty International, LaGuardia, Philadelphia International, Baltimore–Washington International, Ronald Reagan Washington National, New York Stewart International Airport, Long Island MacArthur, Lehigh Valley International, Atlantic City International

There are a number of airports in and around Denver. The main one is Denver International and other nearby airports include Colorado Springs, Pueblo Memorial, Eagle County Regional, Laramie Regional, Cheyenne Regional.