Cheap flights from Philadelphia to Washington, D.C. from $148
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to Washington, D.C. departing on 7/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Philadelphia to Washington, D.C. Dulles Intl Airport
Our best United Airlines deals on Philadelphia to Washington, D.C. Dulles Intl Airport flight tickets
American Airlines flights from Philadelphia to Washington, D.C. Dulles Intl Airport
Our best American Airlines deals on Philadelphia to Washington, D.C. Dulles Intl Airport flight tickets
See travel insights to Washington, D.C. from
How to get the cheapest flight ticket from Philadelphia to Washington, D.C. Dulles Intl Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?
In general, November is the cheapest month to fly from Philadelphia to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $239. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $246.
What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Our data shows that Wednesday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $773. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Philadelphia to Washington, D.C. Dulles Intl Airport for around $1,012.
What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?
Flying to Washington, D.C. Dulles Intl Airport from Philadelphia in the morning is the least expensive time of day to depart. momondo users have found prices as low as $772 when looking at flights departing in the morning. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,201 on average. Flights to Washington, D.C. Dulles Intl Airport from Philadelphia at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Philadelphia to Washington, D.C. Dulles Intl flight route?
Fly from Philadelphia to Washington, D.C. Dulles Intl for the best Philadelphia - Washington, D.C. Dulles Intl flight prices
What cabin class options are available on Philadelphia to Washington, D.C. Dulles Intl flights?
There are 4 cabin classes available to choose from on Philadelphia to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Philadelphia to Washington, D.C. Dulles Intl Airport flights?
No. A direct flight is the cheapest option for a flight between Philadelphia to Washington, D.C. Dulles Intl Airport.
How many flights depart from Philadelphia to Washington, D.C. Dulles Intl Airport on average per day?
As of June 2025, there are 11 flights per day flying from Philadelphia to Washington, D.C. Dulles Intl Airport. The most common time of day flights depart is 6:00AM, with 68% of flights taking off at noon.
How many flights depart from Philadelphia to Washington, D.C. Dulles Intl Airport on average per week?
As of June 2025, there are 77 flights per week flying from Philadelphia to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.
When to book flights from Philadelphia to Washington, D.C. Dulles Intl Airport
Cheap Philadelphia to Washington, D.C. Dulles Intl Airport (PHL to IAD) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Philadelphia to Washington, D.C. Dulles Intl Airport
How far is Philadelphia to Washington, D.C. Dulles Intl by plane?
The straight-line distance from Philadelphia to Washington, D.C. Dulles Intl is 140.7 mi. 1h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from Philadelphia Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from Philadelphia Airport to Washington, D.C. Dulles Intl Airport refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to Washington, D.C. Dulles Intl Airport?
The number of operators available for flights from Philadelphia Airport to Washington, D.C. Dulles Intl Airport is 1 as of June 2025.
How old do you have to be to fly from Philadelphia Airport to Washington, D.C. Dulles Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Philadelphia Airport to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The travel and health documents you'll need for your trip to Washington, D.C. Dulles Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Philadelphia to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Philadelphia to Washington, D.C. Dulles Intl Airport is Boeing 787-8 Dreamliner (11.57% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (9.42%), Boeing 787 Dreamliner (7.27%), and Airbus A321-100/200 (6.28%).
What is the most popular airline from Philadelphia to Washington, D.C. Dulles Intl Airport?
Based on momondo bookings for flights between Philadelphia and Washington, D.C. Dulles Intl Airport, the leading airline is United Airlines, making up 100% of the total bookings.
Best airlines flying from Philadelphia to Washington, D.C. Dulles Intl Airport
Compare and see reviews for airlines that fly from Philadelphia to Washington, D.C. Dulles Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $159 | Free Cancellation | Rating 7.4 8,801 reviews |
United Airlines Flights From Philadelphia to Washington, D.C. Dulles Intl Airport
United Airlines flies from Philadelphia to Washington, D.C. Dulles Intl Airport around 26 times per week, with 8,801 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Philadelphia to Washington, D.C. Dulles Intl Airport in the last 72 hours was $159 (round-trip), much lower than the average airfare cost of $265 for United Airlines flights on this route.
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Why should I use momondo to find a flight deal from Philadelphia to Washington, D.C.?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Philadelphia to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Philadelphia to Washington, D.C. with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Washington, D.C. from Philadelphia with this policy.
How can momondo help me find flights from Philadelphia to Washington, D.C.?
momondo provides multiple filters to help you find the best flight to Washington, D.C. from Philadelphia. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Philadelphia to Washington, D.C. right now. Can momondo alert me if prices change?
Price alerts on flights to Washington, D.C. from Philadelphia are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.