Cheap Flights from Boulder (WBU) to Philadelphia (PHL)

Popular airlines from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL)

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Flights from Boulder (WBU) to Philadelphia (PHL)
Origin airport
Boulder Municipal
Destination airport
Philadelphia Intl.
Distance
1580 mi

Boulder to Philadelphia Flights

The cheapest times to fly from Boulder 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 Boulder to Philadelphia are during the month of . You can find some of the cheapest flights from Boulder to Philadelphia with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boulder to Philadelphia

Sunday is one of the best days to book for cheap flights from Boulder 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 Boulder 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 Boulder to Philadelphia in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Boulder 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 Boulder 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 Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL) cost?
Secure a cheap one-way flight or cheap return flight from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL)?
is the least expensive month to fly from WBU to PHL. Planning your trip for the off-season is often the key to finding better deals on flights.
Which airlines fly direct from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL)?
You can't catch a nonstop flight from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL). However, you can easily reach Philadelphia without any layovers by leaving from Denver Intl. Airport (DEN).
What is the cheapest airline that flies from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL)?
To find the cheapest airline flying from WBU to PHL, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL)?
You'll have to hop on a flight with a layover when traveling from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from WBU to PHL?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on various factors, including the airline and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL)?
To touch down at Philadelphia Intl. Airport (PHL) on schedule, book a flight that leaves from Boulder, CO (WBU-Boulder Municipal) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL) last-minute?
Waiting until just before your trip to book your flight from WBU to PHL often results in higher prices. While you might find some last-minute offers, there's no guarantee. Allow some flexibility in your schedule to maximize your chances of landing a bargain.
Is it cheaper to book a WBU to PHL flight and hotel package?
Compared with arranging flights and hotels separately, booking a WBU to PHL flight and hotel package with Expedia could result in significant savings. Better still, having everything in one convenient place will take the hassle out of travel planning. Simply pick your flights and select from our extensive range of stays, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Boulder, CO (WBU-Boulder Municipal) to Philadelphia Intl. Airport (PHL)?
If you booked your WBU to PHL flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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