$86 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 9/29. 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

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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

Mon, Aug 24 - Sun, Aug 30
Frontier Logo
2:45 pm - 10:52 pmPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
8h 07m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
8:39 pm - 7:15 amIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
10h 36m1 stop Atlanta Hartsfield-Jackson
$157Frontier
Wed, Sep 23 - Wed, Sep 30
Frontier Logo
12:40 pm - 12:10 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
11h 30m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
3:11 pm - 8:41 amIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
17h 30m1 stop Tampa
$168Frontier
Fri, Sep 11 - Mon, Sep 14
Frontier Logo
12:40 pm - 12:10 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
11h 30m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
7:50 am - 6:14 pmIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
10h 24m1 stop Atlanta Hartsfield-Jackson
$177Frontier
Wed, Sep 23 - Wed, Sep 30
Frontier Logo
5:32 pm - 12:10 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
6h 38m1 stop Atlanta Hartsfield-Jackson
Frontier Logo
9:04 pm - 12:30 amIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
27h 26m2 stops Atlanta Hartsfield-Jackson Tampa
$178Frontier
Sat, Oct 31 - Thu, Nov 5
United Airlines Logo
6:00 am - 7:13 amPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
1h 13mnonstop
United Airlines Logo
10:15 pm - 11:30 pmIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
1h 15mnonstop
$249United Airlines
Sat, Oct 31 - Sat, Nov 7
United Airlines Logo
7:40 pm - 8:53 pmPHL  Philadelphia-IAD Washington, D.C. Dulles Intl
1h 13mnonstop
United Airlines Logo
8:36 am - 9:49 amIAD  Washington, D.C. Dulles Intl-PHL Philadelphia
1h 13mnonstop
$249United Airlines
Thu, Oct 22 - Mon, Oct 26
American Airlines Logo
3:51 pm - 5:00 pmPHL  Philadelphia-DCA Washington, D.C. Reagan-National
1h 09mnonstop
American Airlines Logo
5:10 pm - 6:21 pmDCA  Washington, D.C. Reagan-National-PHL Philadelphia
1h 11mnonstop
$249American Airlines
Fri, Oct 30 - Tue, Nov 3
American Airlines Logo
3:51 pm - 5:00 pmPHL  Philadelphia-DCA Washington, D.C. Reagan-National
1h 09mnonstop
American Airlines Logo
5:10 pm - 6:24 pmDCA  Washington, D.C. Reagan-National-PHL Philadelphia
1h 14mnonstop
$249American Airlines
Thu, Dec 3 - Sun, Dec 6
American Airlines Logo
3:00 pm - 4:04 pmPHL  Philadelphia-DCA Washington, D.C. Reagan-National
1h 04mnonstop
American Airlines Logo
1:44 pm - 2:52 pmDCA  Washington, D.C. Reagan-National-PHL Philadelphia
1h 08mnonstop
$249American Airlines
Wed, Oct 28 - Wed, Nov 4
American Airlines Logo
3:51 pm - 5:00 pmPHL  Philadelphia-DCA Washington, D.C. Reagan-National
1h 09mnonstop
American Airlines Logo
1:44 pm - 2:55 pmDCA  Washington, D.C. Reagan-National-PHL Philadelphia
1h 11mnonstop
$249American 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.

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 $284 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 $396.

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 $699 on average. Morning departures are around 27% 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 $1,166.

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 $489, 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 $199 (return) on average. On the other hand, the most expensive months are May and June, when the average cost of round-trip tickets is $605 and $564 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 Tuesdays for the best deals.

Good to know

Cheapest flight

$86
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 10085 reviews
6.7Food
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
Airline reviews

The flight crew were very helpful. The seats were very close together. There was barely room to sit without touching the person next to you.

4.0 OkayN, Jul 2026
Read more United Airlines reviews

The flight crew were very helpful. The seats were very close together. There was barely room to sit without touching the person next to you.

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

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

My husband and I recently had an unfortunate experience with Lufthansa. At the Philadelphia International airport, the ground staff refused to board us because we didn’t have a current visa stamped on our passports for Frankfurt. We completely understand that this was our mistake. we should have double-checked the visa requirements before our trip. However, the issue that upset us most was how the situation was handled by the staff. They told us they would mark it as “boarding denied due to visa issue”, but instead they recorded it as “no show”. Because of that incorrect entry, our return flight was automatically cancelled as well, which caused additional stress and expense. Mistakes can happen, but we expected more transparency and accuracy from a reputed airline like Lufthansa. It would have made a big difference if the staff had been more careful and considerate in documenting the situation correctly.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

Smoothly flight, pleasant flight attendants. I wish there were better food choices.

A three (3) hour flight should have meal service in First Class, not just potato chips!

Flight was on time, crew were excellent. For some reason our originally selected seats were changed. We had to re-choose our seats when we checked in online and options were limited. One of our two checked bags we placed on the wrong carousel. It was only be shear luck that I saw it. That cost us 20 minutes of wasted time. So much for the “priority” tags. They are meaningless, and have been ever since they were implemented. I wish you would do the save some money and stop using them.

Very good, boarded and took off on time and landed early

Boarding and Delays The boarding process for my American Airlines flight from Copenhagen to Philadelphia was a bit tricky. We experienced a gate change that required a long walk to a new area of the airport. Additionally, boarding was not via a jet bridge; we had to take a shuttle bus to the plane and then carry our luggage up the stairs ourselves. Furthermore, the bag drop didn't open until about 12:20 PM, which was only three hours before our scheduled departure. This meant I couldn't drop my bag off early and had to wait outside of security in order to drop off my bag and use the kiosk. The bag drop self-service kiosks also didn't open until about 12:00 PM when an American Airlines employee unlocked them so that we could print out our boarding passes and bag tags, which further created a backlog. The flight was delayed by over an hour because we had to wait for one of the tires on the plane to be changed. Flight Attendant Professionalism On a positive note, the flight attendant was very professional when handling a passenger who was sitting in the wrong seat. Even though the passenger was persistent and reluctant to move, the flight attendant calmly ensured the assigned passenger could take their seat. Kudos to the flight attendant for keeping his calm and composure, not allowing the issue to escalate, and handling it well under pressure while a line of passengers waited in the aisle to board. In-Flight Service The in-flight service was also fast, prompt, and efficient, although service had to be suspended for the last two hours of the flight due to weather and turbulence, which was outside of the crew's control. Limited Flight Options Please note that American Airlines only operates one flight per day in and out of Copenhagen. This means there are limited options available if your flight is delayed or canceled, which is something to take into consideration when booking.

Quick flight again no one illness why there were multiple delays and changing of the gate number.

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.

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

Information on your arrival and departure airports