$704 Find cheap flights from Allentown to Lisbon

In the last 3 days, the lowest price for a flight from Allentown to Lisbon was $704 for a one-way ticket and $1,058 for a round-trip.

Yes, you'll most likely have to show a valid passport before boarding the plane in Allentown and on arrival in Lisbon.

Allentown and Lisbon are both served by 1 main airport. You will leave Allentown from Allentown-Bethlehem and will be arriving at Lisbon Humberto Delgado.

We unfortunately don’t have that data for this specific route.

SkyTeam, and oneworld are the airline alliances operating flights between Allentown and Lisbon, with SkyTeam being the most commonly used for this route.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Allentown to Lisbon.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Lisbon from Allentown is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Lisbon with an airline and back to Allentown with another airline. Booking your flights between Allentown and LIS can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Lisbon from Allentown up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.