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Find cheap one-way flights from Boston to Philadelphia starting at US$17.

Book one-way or return flights from Boston to Philadelphia from as little as US$17. Choose from the popular airlines below and book your flight today!

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Boston to Philadelphia?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Boston to Philadelphia

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From US$18
Spirit Airlines
From US$54
Delta Air Lines
From US$56
Jetblue Airways
From US$79
United Airlines
From US$95
Southwest Airlines
From US$169
American Airlines
From US$227
Alaska Airlines
From US$253
ANA airlines

Find more flights and airlines

Find cheap flights from Boston to Philadelphia by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Boston to Philadelphia.

  • Cheapest
    Frontier Airlines
    BOS
    12:46
    1h 34m
    Direct
    PHL
    14:20
    General Edward Lawrence Logan International Airport - Philadelphia International Airport
    Wed, Apr 17Frontier Airlines
    US$17
  • Frontier Airlines
    BOS
    09:45
    11h 29m
    1 transfer
    TTN
    21:14
    General Edward Lawrence Logan International Airport - Trenton Mercer Airport
    Sat, Mar 23Frontier Airlines
    US$98
  • Frontier Airlines
    BOS
    09:45
    11h 29m
    1 transfer
    TTN
    21:14
    General Edward Lawrence Logan International Airport - Trenton Mercer Airport
    Sat, Mar 23Frontier Airlines
    US$98
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Boston (BOS) to Philadelphia (PHL) the cheapest?

    Airlines adjust prices for flights from Boston to Philadelphia based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Boston (BOS) to Philadelphia (PHL) cost?

    According to Trip.com's data, the lowest price is around $214.
  • How long does it take to fly from Boston (BOS) to Philadelphia (PHL) and what is the distance?

    It takes around 1 hour 38 minutes to fly from Boston (BOS) to Philadelphia (PHL).
  • What are the most popular airlines that fly from Boston (BOS) to Philadelphia (PHL)?

Boston to Philadelphia Flight Information

Cheapest nonstop flight price

$16

Cheapest round-trip ticket price

$35

Off-season for travel

December

Peak season for travel

September