$82 Find Cheap Flights from Philadelphia to Washington

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 Washington departing on 4/29. 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

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Washington.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Washington.
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Flight Deals

Cheap Flights from Philadelphia to Washington

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seattle
Seattle1 stop$281
Spokane
Spokane1 stop$279
Pasco
Pasco1 stop$389
Bellingham
Bellingham1 stop$404
Pullman
Pullman1 stop$377
Wenatchee
Wenatchee1 stop$489
Seattle
Seattle1 stop$281
Spokane
Spokane1 stop$279
Pasco
Pasco1 stop$389
Bellingham
Bellingham1 stop$404
Pullman
Pullman1 stop$377
Wenatchee
Wenatchee1 stop$489

Book Cheap Philadelphia to Washington 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 Washington 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 Washington

Thu, Apr 30 - Wed, May 6
Delta Logo
2:59 pm - 9:05 pm
PHL
-
GEG
9h 06m
1 stop
Delta Logo
6:00 am - 6:08 pm
GEG
-
PHL
9h 08m
1 stop
$279Delta
Sat, Jul 25 - Mon, Aug 3
Frontier Logo
12:42 pm - 9:48 am
PHL
-
SEA
24h 06m
1 stop
Frontier Logo
3:19 pm - 11:47 am
SEA
-
PHL
17h 28m
1 stop
$281Frontier
Mon, May 11 - Fri, May 15
Frontier Logo
8:35 pm - 9:49 am
PHL
-
SEA
16h 14m
1 stop
Frontier Logo
7:50 pm - 5:37 am
SEA
-
PHL
30h 47m
1 stop
$282Frontier
Sat, Apr 18 - Tue, Apr 21
Multiple Airlines Logo
10:54 am - 9:27 am
PHL
-
SEA
25h 33m
2 stops
Multiple Airlines Logo
7:12 pm - 5:34 am
SEA
-
PHL
31h 22m
1 stop
$283Multiple Airlines
Wed, May 6 - Fri, May 15
American Airlines Logo
6:08 pm - 9:23 pm
PHL
-
SEA
6h 15mnonstop
American Airlines Logo
12:34 pm - 8:55 pm
SEA
-
PHL
5h 21mnonstop
$284American Airlines
Sun, Apr 26 - Wed, Apr 29
Alaska Airlines Logo
7:22 am - 10:20 am
PHL
-
SEA
5h 58mnonstop
Alaska Airlines Logo
9:44 pm - 6:02 am
SEA
-
PHL
5h 18mnonstop
$285Alaska Airlines
Fri, Apr 24 - Wed, May 6
American Airlines Logo
8:25 am - 11:34 am
PHL
-
SEA
6h 09mnonstop
American Airlines Logo
12:34 pm - 8:55 pm
SEA
-
PHL
5h 21mnonstop
$288American Airlines
Tue, Apr 28 - Tue, May 5
Southwest Logo
11:35 am - 8:45 pm
PHL
-
PDX
12h 10m
2 stops
Southwest Logo
11:15 am - 11:55 pm
PDX
-
PHL
9h 40m
2 stops
$297Southwest
Thu, Apr 30 - Tue, May 5
Alaska Airlines Logo
6:58 pm - 11:59 pm
PHL
-
PUW
8h 01m
1 stop
Alaska Airlines Logo
7:28 pm - 6:02 am
PUW
-
PHL
7h 34m
1 stop
$377Alaska Airlines
Fri, Jun 5 - Sat, Aug 1
United Airlines Logo
6:23 pm - 12:50 am
PHL
-
PSC
9h 27m
1 stop
United Airlines Logo
1:35 pm - 5:31 am
PSC
-
PHL
12h 56m
2 stops
$394United Airlines
Booking Insights

KAYAK's insights & trends for Philadelphia to Washington flights

Get data-powered insights and trends into flights from Philadelphia to Washington 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 State of Washington?

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 State of Washington departing in July.

What is the cheapest Philadelphia to Washington flight route?

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

The cheapest ticket to Washington from Philadelphia found in the last 72 hours was to Seattle, at $282 round-trip. The most popular route is from Philadelphia (PHL) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $282.

What is the cheapest time of day to fly to Washington?

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

The cheapest time of day to fly to Washington is generally at night, when round-trip flights cost $455 on average. Morning departures are around 4% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the morning, which is peak travel time and where the average cost of a ticket is $487.

Can I save money by flying with a layover from Philadelphia to Washington?

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 $427, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Philadelphia to Washington?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Washington, 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 Washington is January, when tickets cost $318 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $487 and $462 respectively.

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

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

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

How far in advance should I book a flight from Philadelphia to Washington?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Philadelphia to Washington, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Philadelphia to Washington, you should book around 4 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$82
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Philadelphia to Portland

FAQs - booking Washington flights

  • How does KAYAK find such low prices on flights from Philadelphia to Washington?

    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 Washington.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Philadelphia to Washington 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 Washington?

    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 Washington 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 Washington?

    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 Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Washington

  • Looking for a cheap flight? 25% of our users found tickets from Philadelphia to the following destinations at these prices or less: Seattle $206 one-way - $357 round-trip

Reviews of the top 5 airlines serving from Philadelphia to Washington

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Washington. 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 Washington? 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.
7.9
Alaska AirlinesOverall score based on 12170 reviews
7.8Comfort
8.5Crew
7.0Food
8.1Boarding
7.0Entertainment
Airline reviews

Were on time, very efficient and pleasant. Families with children were treated well and boarded ahead which made it easier for the rest of the plane.

10.0 ExcellentAlexandra, Apr 2026
JFK - SEA
Read more Alaska Airlines reviews

Were on time, very efficient and pleasant. Families with children were treated well and boarded ahead which made it easier for the rest of the plane.

I truly can’t give a review regarding the food or entertainment it did not apply to my flight. But everything ran very smoothly.

Great. A to B no issues. Everyone did their jobs exceptionally. All great. God bless America.

The response was very helpful and quick. Overall, it was very professional.

No complimentary snacks or food. Had to buy drinks and food.

The last row was empty and I sat there for two minutes. I was treated like a criminal for doing so. My wife wanted to get past the cart in the aisle and she was treated like dirt by the same black attendent..

On time, friendly and professional staff and crew Very nice new terminal in Spokane

My suggestion is that they should provide USB-C charging ports for modern cell phones.

Overall, we had a very good experience with Alaska Airlines on our flight from Honolulu to Seattle. The First Class cabin was comfortable, boarding was smooth, and the crew was friendly and attentive. The meal service was solid and the overall flight felt well organized. One thing that stood out negatively was the drink service. I was in First Class and, while quietly watching movies and not causing any issues, I was cut off after four drinks. I understand safety policies, but the cutoff felt a bit premature given the context.

Everything was excellent. It always is with Alaska Airlines. Thank you. 😊

We departed and landed early which was a nice surprise. The boarding process was slow.

N Everything was perfect from boarding to assistance to baggage in Tampa

Subpar. The seating on the plane is almost unbearable. We are literally touching and/or sitting on each other which is totally unacceptable and shameful. Pilots and crew was very accommodating and friendly.

The boarding was organized and informative but the plane was tight meaning that you were sitting on one another and extremely uncomfortable. It’s disappointing that can’t have common seating comfort on the plane.

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

I was told that they needed to check my bag at the gate and to pick it up at the gate in Richmond. No big deal. I know they can't control the weather, but we flew around RIC for 45 minutes to avoid the storm and were 25 minutes late leaving as well. Once we landed, we were told to go to baggage claim to pick up our luggage. I went to bathroom, paid for parking, and went to the assigned baggage claim location. United flight people came down with us as well. They got their luggage immediately. Next, South West people came down about 10 minutes later. They got their luggage next. We finally got our luggage around 30 minutes in waiting. Was not a wonderful experience. No reflection on Delta, but the ground crew was lousy at best.

Everything could have benn better. Short fly, no food, no entertainment and no wifi.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

The flight was officially delayed 3 times, and was actually later than that. Combined, it was a 3 hour delay, but there was no recognition (miles, voucher, etc). The crew seemed stressed. The captain sounded nervous in his announcements. The flight itself was smooth and uneventful.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

It was perfect! I've never flown with United before, but I definitely will in the future

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

Just a bad day to fly. Flight was delayed from scheduled 6:50 pm departure to 8:50 pm. Combination of factors mostly related to weather at the destination airport (which is where the incoming flight originated) which delayed the inbound flight over an hour. Once on board, we taxied but had to hold again on the taxiway for 10 minutes or so. We did not get wheels up until after 9 pm. The flight was smooth but about 18 minutes from our destination, we had to hold for several minutes more due to weather at ORD. We finally landed at ORD about 11:08 pm (accounting for the time difference, that was about a 3 hour delay from our scheduled departure time). It felt like we were never going to get to our destination. But the flight crew and attendants were very good. The movie selection onboard was also very nice. Got to watch half of a movie just during our taxi from the gate at ATL due to the delay!

Fine. The issues I had were associated with luggage being delayed from Turkey to Tanzania

No meal service to the back of the plane as it started late or was too slow to get it out before it was time to land.

Terrible, if possible won't be flying again anytime soon!

Efficient boarding and early departure. Very smooth flight. Early arrival in ATL. Great flight.

We purchase first class seats for the first time for multiples of standard economy ticket. There was no access to the club lounge and no priority boarding. The meal and the service once on the plane were superior and the seat was nicer, but not worth the price difference. I will be happy to seat in economy and spend the difference on more travel.

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.

They are always late and seats was also not having working charger

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Everything you need to know for your flight from Philadelphia to Washington

Information on your arrival and departure airports