Cheap flights from Philadelphia to Portugal from $281

The cheapest month to fly to Portugal from Philadelphia is in January. Flight prices, which tend to average around $752, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Portugal from Philadelphia during March instead. Flights to Portugal in March, while not as cheap as those in January, still average around $759.

According to our data, Tuesday is the cheapest day to fly to Portugal from Philadelphia. The lowest ticket price found for a Tuesday departure recently was $1,015. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $1,203.

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Philadelphia to Portugal during this time can be as low as $1,116. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,415 per ticket.

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

You are more likely to see cheaper flights to Portugal from Philadelphia when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $1,092 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Philadelphia for as low as $1,007 on momondo.

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

Delta, British Airways, and United Airlines are the most popular carriers operating from Philadelphia to Portugal

TAP AIR PORTUGAL, United Airlines and Delta are the top three most popular airlines that fly to Portugal from Philadelphia according to our data. TAP AIR PORTUGAL is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 20 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 4 flights per day flying from Philadelphia to Portugal. The most common time of day flights depart is 9:00PM, with 100% of flights taking off in the evening.

28 flights are operational weekly from Philadelphia to Portugal as of August 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.