Cheap flights from Boston to Philadelphia from $84

The cheapest month to fly to Philadelphia from Boston is in July. Flight prices, which tend to average around $207, 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 Boston averaging around $217.

The cheapest day to depart from Boston to Philadelphia is on a Thursday. Travelers who choose to depart for Philadelphia on a Thursday will often find tickets for as low as $279. On the other hand, Monday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $370.

According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from Boston to Philadelphia in the evening for as low as $283. 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 afternoon when prices are around $403.

Fly from Boston Logan Intl to Philadelphia for the best Boston Logan Intl - Philadelphia flight prices

You are more likely to see cheaper flights to Philadelphia from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $246 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from Boston for as low as $169 on momondo.

JetBlue, Delta, and United Airlines are the most popular carriers operating from Boston Logan Intl to Philadelphia

American Airlines, JetBlue and Delta are the top three most popular airlines that fly to Philadelphia from Boston according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Philadelphia. Keep in mind that there are 7 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between Boston and Philadelphia have experienced a delay on any given week. The average delay length over the past 12 months has been 124 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, American Airlines have had the least number of delays on this route over the last 12 months; with about 17% of their flights experiencing any sort of delay.

The number of flights available between Boston and Philadelphia is 28 per day as of May 2026. The most frequent departure time is 4:00PM, with 40% of daily flights leaving in the afternoon.

As of May 2026, there are 198 flights per week flying from Boston to Philadelphia. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.