Cheap flights from Seattle to Allentown from £378

Travelers frequently search for route combinations, such as Seattle and Las Vegas, London, Mexico City, Phoenix, Guadalajara, Houston, Dallas, New York, Los Angeles, Denver, Manchester, Edinburgh, San Diego, Chicago, Tokyo, Calgary, Seoul, San Francisco, Austin, Minneapolis.

Travelers frequently search for route combinations, such as Allentown and Orlando, Salt Lake City, Tampa, Fargo, San Diego, Denver, Fort Lauderdale, Guadalajara, Mexico City, Gazipaşa, Lower Prince's Quarter, Santa Marta, Washington, D.C., Saint Vincent, Baghdad, Barisal, Nairobi, Fuerteventura, London, Stuttgart.

Seattle is mainly served by Seattle–Tacoma International. But there are other airports nearby, including Kenmore Air Harbor Seaplane Base, Boeing Field.

The main airport in Seattle is Seattle–Tacoma International. It is also served by Vancouver International, Portland International, Abbotsford International, Bellingham International, Paine Field Everett, Yakima Air Terminal, Vancouver Harbour Flight Centre, Victoria Inner Harbour SPB, Pangborn Memorial.

The main airport in Allentown is Lehigh Valley International. It is also served by John F. Kennedy International, Newark Liberty International, Baltimore–Washington International, Philadelphia International, LaGuardia, Ronald Reagan Washington National, New York Stewart International Airport, Tweed New Haven, Lehigh Valley International, Westchester County.

Currently, you can fly between Seattle and Allentown with United Airlines, Hawaiian Airlines, Alaska Airlines.

If you don’t have specific dates for your trip between Seattle and Allentown, 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 Seattle and Allentown, 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 Seattle. The main one is Seattle–Tacoma International and other nearby airports include Vancouver International, Portland International, Abbotsford International, Bellingham International, Paine Field Everett, Yakima Air Terminal, Vancouver Harbour Flight Centre, Victoria Inner Harbour SPB, Pangborn Memorial