Cheap flights from Philadelphia to Lisbon from $318

In general, March is the cheapest month to fly from Philadelphia to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $765. If you are unable to visit Lisbon during the month of March, then departing from Philadelphia during the month January is also very affordable. Most momondo users find prices during this month for around $774.

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 $982. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Lisbon for around $1,195.

The cheapest time of day to fly to Lisbon is in the evening when flights can be purchased for as low as $1,094. 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 Philadelphia 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 Philadelphia - Lisbon Humberto Delgado flight prices

You are more likely to see cheaper flights to Lisbon from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $1,088 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Philadelphia for as low as $956 on momondo.

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

No. A direct flight is the cheapest option for a flight between Philadelphia to Lisbon.

As of August 2026, prices for Philadelphia to Lisbon flights are approximately 25% more expensive when compared to flights at the same time last year.

As of August 2026, 4 flights take off from Philadelphia and land in Lisbon each day. The most common flight departure time for this route is 9:00PM, with 100% of daily flights taking off in the evening.

As of August 2026, there are 28 flights per week flying from Philadelphia to Lisbon. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.