Find out what a flight from Seattle to Allentown might cost

Prices vary based on date, airline, and availability. Compare several options if you're flying between Seattle and Allentown/Bethlehem/Easton.

Select your dates to check current offers.

Try shifting your departure forward or backward by a day to find better options. If you’re looking for a good deal, consider flying outside peak hours as well.

Are there multiple airports in Seattle and Allentown/Bethlehem/Easton?

If your departure or arrival city has more than one airport, it's worth comparing all of them for timing and pricing.

• Airports in Seattle: 2 airports are active in Seattle - Boeing Field, Lake Union.
• Airports in Allentown/Bethlehem/Easton: Allentown/Bethlehem/Easton is the only airport currently running.

If you're traveling with a group or bulky luggage, look into parking or transport options. Alternative airports may offer faster transfers or better rates.

Refine your flight search from Seattle to Allentown

With Jetcost, it’s easy to narrow down results to find flights that match your schedule and preferences. You can filter by airline, price, trip type, and more — including offers from the best airlines and travel agencies.

Other popular destinations

Also looking at United States? These cities are trending: Las Vegas, Los Angeles, Miami, New York City, Orlando.

Online agencies can show different offers for the same flight — it’s worth comparing. Filters let you narrow things down further, like selecting a specific time slot to find flights that suit you best.