Cheap flights from Pennsylvania to Lisbon from $237

In general, November is the cheapest month to fly from Pennsylvania to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $724. If you are unable to visit Lisbon during the month of November, then departing from Pennsylvania during the month January is also very affordable. Most momondo users find prices during this month for around $751.

Our data shows that Tuesday is the least expensive day to fly to Lisbon. Tickets to fly out on this day can be as low as $918. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Pennsylvania to Lisbon for around $1,180.

The cheapest time of day to fly to Lisbon is in the evening when flights can be purchased for as low as $1,008. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,415 on average. Flights to Lisbon from Pennsylvania in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Philadelphia to Lisbon Humberto Delgado for the best Pennsylvania - Lisbon Humberto Delgado flight prices

You are more likely to see cheaper flights to Lisbon from Pennsylvania when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $976 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Pennsylvania for as low as $816 on momondo.

There are 3 cabin classes available to choose from on Pennsylvania to Lisbon Humberto Delgado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Azores Airlines, and TAP AIR PORTUGAL are the most popular carriers operating from Pennsylvania to Lisbon Humberto Delgado

American Airlines, Iberia and British Airways are the top three most popular airlines that fly to Lisbon from Pennsylvania according to our data. American Airlines is the first choice among our users, with 31% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 10 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

The number of flights available between Pennsylvania and Lisbon is 20 per day as of February 2026. The most frequent departure time is 9:00PM, with 100% of daily flights leaving in the evening.

The number of flights available between Pennsylvania and Lisbon is 143 per week as of February 2026. The most frequent departure day is Tue, with 18% of weekly flights leaving on this day.