$105 Cheap Flights from Baltimore (BWI) to Philadelphia (PHL)

View $105 flight on Wed, Aug 20, 2025Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Philadelphia Intl. Airport (PHL)

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Cheap Flights from Baltimore to Philadelphia (BWI-PHL)

Prices were available within the past 7 days and start at $105 for one-way flights and $209 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Wed, Aug 20 - Tue, Aug 26
BWI
Baltimore
PHL
Philadelphia
$209 Roundtrip, just found
$209
Roundtrip
just found
Select Spirit Airlines flight, departing Wed, Aug 20 from Baltimore to Philadelphia, returning Tue, Aug 26, priced at $209 just found
Spirit Airlines
Wed, Aug 13 - Wed, Oct 15
BWI
Baltimore
PHL
Philadelphia
$212 Roundtrip, found 6 days ago
$212
Roundtrip
found 6 days ago
Select Spirit Airlines flight, departing Wed, Aug 13 from Baltimore to Philadelphia, returning Wed, Oct 15, priced at $212 found 6 days ago
Spirit Airlines
Sun, Nov 16 - Mon, Nov 17
BWI
Baltimore
PHL
Philadelphia
$229 Roundtrip, found 2 hours ago
$229
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Sun, Nov 16 from Baltimore to Philadelphia, returning Mon, Nov 17, priced at $229 found 2 hours ago
Spirit Airlines
Wed, Aug 13 - Fri, Aug 29
BWI
Baltimore
PHL
Philadelphia
$231 Roundtrip, found 1 day ago
$231
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Wed, Aug 13 from Baltimore to Philadelphia, returning Fri, Aug 29, priced at $231 found 1 day ago
Southwest Airlines
Mon, Sep 8 - Thu, Sep 11
BWI
Baltimore
PHL
Philadelphia
$237 Roundtrip, found 5 days ago
$237
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Mon, Sep 8 from Baltimore to Philadelphia, returning Thu, Sep 11, priced at $237 found 5 days ago
Spirit Airlines
Fri, Aug 22 - Sun, Aug 24
BWI
Baltimore
PHL
Philadelphia
$249 Roundtrip, found 2 hours ago
$249
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Fri, Aug 22 from Baltimore to Philadelphia, returning Sun, Aug 24, priced at $249 found 2 hours ago
Spirit Airlines
Sat, Aug 9 - Wed, Aug 13
BWI
Baltimore
PHL
Philadelphia
$265 Roundtrip, found 3 days ago
$265
Roundtrip
found 3 days ago
Select Spirit Airlines flight, departing Sat, Aug 9 from Baltimore to Philadelphia, returning Wed, Aug 13, priced at $265 found 3 days ago
American Airlines
Sat, Sep 20 - Wed, Sep 24
BWI
Baltimore
PHL
Philadelphia
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Sep 20 from Baltimore to Philadelphia, returning Wed, Sep 24, priced at $269 found 6 days ago
Delta
Sat, Aug 23 - Tue, Aug 26
BWI
Baltimore
PHL
Philadelphia
$363 Roundtrip, found 5 days ago
$363
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Aug 23 from Baltimore to Philadelphia, returning Tue, Aug 26, priced at $363 found 5 days ago
United
Mon, Aug 18 - Mon, Aug 25
BWI
Baltimore
PHL
Philadelphia
$443 Roundtrip, found 4 days ago
$443
Roundtrip
found 4 days ago
Select United flight, departing Mon, Aug 18 from Baltimore to Philadelphia, returning Mon, Aug 25, priced at $443 found 4 days ago

Find the cheapest month to fly from Baltimore (BWI) to Philadelphia (PHL)

March is typically the cheapest month to fly

From $117 - $509 per traveler.

Graph displaying average flight prices per month

Alternative airports near Philadelphia

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to New Castle ILG. Average driving time to city center is 44 minutes. Flights from $783
ILG
New Castle
Average driving time to city center44 min
Flights from $783
Flights from Baltimore (BWI) to Philadelphia (PHL)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
Philadelphia Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$209
Distance
90 mi

Baltimore to Philadelphia Flights

The cheapest times to fly from Baltimore to Philadelphia

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Philadelphia are during the month of August. You can find some of the cheapest flights from Baltimore to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Philadelphia

Sunday is one of the best days to book for cheap flights from Baltimore to Philadelphia: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Philadelphia

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from $105 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Philadelphia flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Philadelphia airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL) cost?
Discover the latest flight deals from BWI to PHL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BWI to PHL?
The cheapest flights from BWI to PHL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL)?
Although Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) has no direct flights to Philadelphia Intl. Airport (PHL), other airports have nonstop options. Traveling from Ronald Reagan Washington National Airport (DCA) will get you to Philadelphia without any layovers.
What is the cheapest airline that flies from BWI to PHL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BWI to PHL. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL)?
Direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BWI to PHL?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a range of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from BWI to PHL?
With 100% of flights usually arriving as scheduled, Delta Air Lines has the best on-time performance for direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL). To monitor your flight status and get notifications if anything changes, simply head to the Expedia App.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL)?
Opt for a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL) last-minute?
Booking your ticket from BWI to PHL shortly before your trip is usually more expensive. But if you're flexible with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a BWI to PHL flight and hotel package?
Booking a BWI to PHL flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our extensive range of hotels and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Philadelphia Intl. Airport (PHL)?
In most instances, you're able to reschedule or cancel your BWI to PHL flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want further details, head to our Customer Service portal.

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*Available to One Key members.