Cheap flights from Portland to Philadelphia from $137

The cheapest month to fly to Philadelphia from Portland is in September. Flight prices, which tend to average around $399, are often lower during this time because this is during the off-season. The month of October is another great option to travel to Philadelphia, with average flight prices from Portland averaging around $416.

The cheapest day to depart from Portland to Philadelphia is on a Tuesday. Travelers who choose to depart for Philadelphia on a Tuesday will often find tickets for as low as $404. On the other hand, Monday is the most expensive day to depart from Portland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $497.

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Portland to Philadelphia in the evening for as low as $465. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the morning when prices are around $493.

Fly from Portland to Philadelphia for the best Portland - Philadelphia flight prices

You are more likely to see cheaper flights to Philadelphia from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $461 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Portland for as low as $381 on momondo.

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

Delta, Southwest, and Alaska Airlines are the most popular carriers operating from Portland to Philadelphia

Alaska Airlines, Delta and United Airlines are the top three most popular airlines that fly to Philadelphia from Portland according to our data. Alaska Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 8 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

Chicago (ORD) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $310.

Flights connecting via Chicago (MDW) have the shortest average one-way travel time: 6h 50m.

Chicago (MDW) has the shortest average layover time for this route: 1h 09m.

As of June 2026, there are 3 flights per day flying from Portland to Philadelphia. The most common time of day flights depart is 12:00PM, with 40% of flights taking off in the afternoon.

The number of flights available between Portland and Philadelphia is 26 per week as of June 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.