$90 Find Cheap Flights from Philadelphia to District of Columbia - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to District of Columbia departing on 8/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to District of Columbia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to District of Columbia, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to District of Columbia, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Book Cheap Philadelphia to District of Columbia Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to District of Columbia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to District of Columbia

Tue, Aug 4 - Tue, Aug 11
Frontier Logo
8:30 am - 4:40 pm
PHL
-
IAD
8h 10m
1 stop
Frontier Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
$171Frontier
Wed, Jul 15 - Wed, Jul 22
Frontier Logo
6:30 am - 5:14 pm
PHL
-
IAD
10h 44m
1 stop
Frontier Logo
7:49 am - 10:28 pm
IAD
-
PHL
14h 39m
1 stop
$173Frontier
Wed, Jul 15 - Wed, Jul 22
Frontier Logo
8:30 am - 5:14 pm
PHL
-
IAD
8h 44m
1 stop
Frontier Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
$183Frontier
Wed, Jul 15 - Wed, Jul 22
Frontier Logo
4:30 pm - 10:55 pm
PHL
-
IAD
6h 25m
1 stop
Frontier Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
$184Frontier
Thu, Jul 23 - Tue, Jul 28
Multiple Airlines Logo
6:18 pm - 2:26 pm
PHL
-
IAD
20h 08m
1 stop
Multiple Airlines Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
$185Multiple Airlines
Sun, Aug 2 - Sun, Aug 9
Multiple Airlines Logo
6:18 pm - 2:26 pm
PHL
-
IAD
20h 08m
1 stop
Multiple Airlines Logo
8:33 pm - 7:15 am
IAD
-
PHL
10h 42m
1 stop
$193Multiple Airlines
Thu, Aug 13 - Mon, Aug 24
JetBlue Logo
8:28 am - 2:30 pm
PHL
-
DCA
6h 02m
1 stop
JetBlue Logo
1:25 pm - 8:00 pm
DCA
-
PHL
6h 35m
1 stop
$219JetBlue
Tue, Sep 1 - Wed, Sep 2
JetBlue Logo
8:28 am - 2:30 pm
PHL
-
DCA
6h 02m
1 stop
JetBlue Logo
1:25 pm - 8:00 pm
DCA
-
PHL
6h 35m
1 stop
$231JetBlue
Sat, Jul 11 - Mon, Jul 13
American Airlines Logo
7:25 pm - 8:41 pm
PHL
-
DCA
1h 16mnonstop
American Airlines Logo
1:30 pm - 2:38 pm
DCA
-
PHL
1h 08mnonstop
$239American Airlines
Sat, Jul 11 - Mon, Jul 13
American Airlines Logo
7:18 am - 10:59 am
PHL
-
DCA
3h 41m
1 stop
American Airlines Logo
1:30 pm - 2:38 pm
DCA
-
PHL
1h 08mnonstop
$248American Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to District of Columbia flights

Get data-powered insights and trends into flights from Philadelphia to District of Columbia to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Philadelphia to District of Columbia?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Philadelphia to District of Columbia departing in August.

What is the cheapest Philadelphia to District of Columbia flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to District of Columbia from Philadelphia found in the last 5 days was to Washington, D.C., at $398 round-trip. The most popular route is from Philadelphia (PHL) to Washington, D.C. Dulles Intl Airport (IAD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $398.

What is the cheapest time of day to fly to District of Columbia?

The average price for all round-trip flights from Philadelphia to District of Columbia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to District of Columbia is generally in the morning, when round-trip flights cost $688 on average. Morning departures are around 23% cheaper than evening flights, on average. The most expensive time of day to fly to District of Columbia is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,125.

Can I save money by flying with a layover from Philadelphia to District of Columbia?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $399, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Philadelphia to District of Columbia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to District of Columbia, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to District of Columbia is October, when tickets cost $144 (return) on average. On the other hand, the most expensive months are May and June, when the average cost of round-trip tickets is $309 and $239 respectively.

What’s the cheapest day of the week to fly from Philadelphia to District of Columbia?

The average price of all round-trip flights from Philadelphia to District of Columbia clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to District of Columbia on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Philadelphia to District of Columbia. For your return ticket, we recommend flying on a Friday and avoiding Sundays for the best deals.

Good to know

Low seasonNovember
Cheapest flight$90
Best time to beat the crowds with an average 44% drop in price.
Most popular time to fly and prices are also 34% lower on average.
Flight from Philadelphia to Washington Dulles Airport

FAQs - booking District of Columbia flights

  • How does KAYAK find such low prices on flights from Philadelphia to District of Columbia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to District of Columbia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to District of Columbia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Philadelphia to District of Columbia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to District of Columbia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Philadelphia to District of Columbia with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to District of Columbia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Philadelphia to District of Columbia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Philadelphia to District of Columbia

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to District of Columbia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to District of Columbia? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9865 reviews
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
6.6Food
Airline reviews

Our flight was delayed 2.5 hours from Lisbon to DC so we missed our connection to Seattle that would have arrived at about 9 PM. The agent initially said we had to stay overnight in DC and there were no other options to put us on to get us to Seattle. While on board I discovered a flight via American he could have put us in but by the time we arrived in DC that was sold out. We were then put on a flight to San Francisco that was also delayed then arrived in San Francisco and our flight to Seattle was also delayed so we ended up not arriving until 2:15 am. Our son could not pick us up so we ended up having to pay over $100 to Uber home. This is the second trip with United that the flight has been delayed causing us to miss an evening in Las Vegas and we were given nothing.

2.0 MediocreLinda, Jun 2026
LIS - IAD
Read more United Airlines reviews

Our flight was delayed 2.5 hours from Lisbon to DC so we missed our connection to Seattle that would have arrived at about 9 PM. The agent initially said we had to stay overnight in DC and there were no other options to put us on to get us to Seattle. While on board I discovered a flight via American he could have put us in but by the time we arrived in DC that was sold out. We were then put on a flight to San Francisco that was also delayed then arrived in San Francisco and our flight to Seattle was also delayed so we ended up not arriving until 2:15 am. Our son could not pick us up so we ended up having to pay over $100 to Uber home. This is the second trip with United that the flight has been delayed causing us to miss an evening in Las Vegas and we were given nothing.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

My bags were misplaced!!! Im in a foreign country with no bags

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

Everything you need to know for your flight from Philadelphia to District of Columbia

Information on your arrival and departure airports