Find Cheap Flights from Philadelphia to Washington Dulles Intl (PHL - IAD)

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Looking for a cheap flight? 25% of our users found flights on this route for $402 or less.

FAQs for Booking Philadelphia to Washington Dulles Intl Flights

How long does a flight from Philadelphia to Washington Dulles Intl take?
An average nonstop flight takes 0h 59m, covering a distance of 135 miles.
How many flights are there between Philadelphia and Washington Dulles Intl?
There are 189 (nonstop) flights between Philadelphia and Washington Dulles Intl per week, averaging 26 per day.
Which airlines provide the cheapest flights from Philadelphia to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on United ($335)
Do I need a passport to fly between Philadelphia and Washington Dulles Intl?
No.
Which airlines fly most frequently between Philadelphia and Washington Dulles Intl?
United (10 times daily), Copa Airlines (3 times daily), Air China (3 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Philadelphia to Washington Dulles Intl?
For Philadelphia to Washington Dulles Intl, Monday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from Washington Dulles Intl back to Philadelphia, the best deals are generally found on Wednesday, with Thursday being the most expensive.

Book cheap flights from Philadelphia to Washington Dulles Intl (round-trip)

Airports
Origin
Philadelphia
$335
only
$335
Destination
Washington
$335
only
$335
Mon, Jun 11
PHL
IAD
17h 00m
Tue, Jun 12
IAD
PHL
1h 06m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 10.0

On time bags made connection

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Mediocre 2.0

First leg delayed on Tarmac for over an hour so I missed my connection. Then united rebooked me for the next day but gave me no voucher or money towards a hotel so I had to get one myself since it was all night in the Houston airport.mthem the rebooked flight had mechanical problems we had to change airplanes, and gates/terminals and were delayed another 2.5 hours. It was terrible.

PHL
IAD
Excellent 10.0

The flight attendants were friendly and attentive to my needs. I like good service and friendliness so for this experience I give 5 stars

I was uncomfortable in my seat but that's expected on an airplane

PHL
IAD
Excellent 8.0

Everything was on time and it was a good flight

Mon, Apr 9
PHL
IAD
0h 59m
Tue, Apr 10
IAD
PHL
1h 05m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 8.0

Everything was on time and it was a good flight

PHL
IAD
Excellent 10.0

The incoming plane was delayed due to 'equipment prep'. Since it was connecting me to my longer leg, I was nervous. The crew did a great job of deplaning everyone and getting the plane ready for our flight with very minimal delay.

It was a quick 30 minute flight and everything was fine.

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Excellent 8.0

The seats were comfortable. Staff was loud. But flight was okay. On time.

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

Tue, Apr 10
PHL
IAD
0h 59m
Wed, Apr 11
IAD
PHL
1h 01m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Excellent 10.0

The flight attendants were friendly and attentive to my needs. I like good service and friendliness so for this experience I give 5 stars

I was uncomfortable in my seat but that's expected on an airplane

PHL
IAD
Excellent 8.0

Everything was on time and it was a good flight

PHL
IAD
Okay 4.3

Very rude crew.

Thu, May 10
PHL
IAD
1h 01m
Thu, May 17
IAD
PHL
1h 15m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 10.0

On time bags made connection

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Excellent 10.0

The flight attendants were friendly and attentive to my needs. I like good service and friendliness so for this experience I give 5 stars

I was uncomfortable in my seat but that's expected on an airplane

PHL
IAD
Mediocre 2.0

First leg delayed on Tarmac for over an hour so I missed my connection. Then united rebooked me for the next day but gave me no voucher or money towards a hotel so I had to get one myself since it was all night in the Houston airport.mthem the rebooked flight had mechanical problems we had to change airplanes, and gates/terminals and were delayed another 2.5 hours. It was terrible.

PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

Tue, Jun 5
PHL
IAD
1h 01m
Sat, Jun 9
IAD
PHL
1h 06m
Trip: 5 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

PHL
IAD
Excellent 8.0

The seats were comfortable. Staff was loud. But flight was okay. On time.

PHL
IAD
Excellent 10.0

On time bags made connection

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

Thu, Apr 5
PHL
IAD
1h 01m
Mon, Apr 9
IAD
PHL
1h 04m
Trip: 5 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Mediocre 2.0

First leg delayed on Tarmac for over an hour so I missed my connection. Then united rebooked me for the next day but gave me no voucher or money towards a hotel so I had to get one myself since it was all night in the Houston airport.mthem the rebooked flight had mechanical problems we had to change airplanes, and gates/terminals and were delayed another 2.5 hours. It was terrible.

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

Sat, Apr 7
PHL
IAD
1h 01m
Wed, Apr 11
IAD
PHL
1h 04m
Trip: 5 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Okay 4.3

Very rude crew.

PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

PHL
IAD
Excellent 10.0

On time bags made connection

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

Fri, Apr 6
PHL
IAD
1h 01m
Mon, Apr 9
IAD
PHL
1h 15m
Trip: 4 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 10.0

The flight attendants were friendly and attentive to my needs. I like good service and friendliness so for this experience I give 5 stars

I was uncomfortable in my seat but that's expected on an airplane

PHL
IAD
Excellent 10.0

On time bags made connection

PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Excellent 10.0

The incoming plane was delayed due to 'equipment prep'. Since it was connecting me to my longer leg, I was nervous. The crew did a great job of deplaning everyone and getting the plane ready for our flight with very minimal delay.

It was a quick 30 minute flight and everything was fine.

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

Sun, Apr 8
PHL
IAD
1h 01m
Mon, Apr 9
IAD
PHL
1h 05m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

PHL
IAD
Excellent 10.0

On time bags made connection

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Excellent 10.0

The incoming plane was delayed due to 'equipment prep'. Since it was connecting me to my longer leg, I was nervous. The crew did a great job of deplaning everyone and getting the plane ready for our flight with very minimal delay.

It was a quick 30 minute flight and everything was fine.

Mon, Mar 19
PHL
IAD
0h 59m
Thu, Mar 22
IAD
PHL
0h 56m
Trip: 4 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 10.0

The incoming plane was delayed due to 'equipment prep'. Since it was connecting me to my longer leg, I was nervous. The crew did a great job of deplaning everyone and getting the plane ready for our flight with very minimal delay.

It was a quick 30 minute flight and everything was fine.

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

PHL
IAD
Excellent 8.0

Everything was on time and it was a good flight

Thu, Apr 5
PHL
IAD
1h 01m
Sat, Apr 7
IAD
PHL
0h 58m
Trip: 3 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 10.0

The flight attendants were friendly and attentive to my needs. I like good service and friendliness so for this experience I give 5 stars

I was uncomfortable in my seat but that's expected on an airplane

PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Okay 4.3

Very rude crew.

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

Sun, Jun 24
PHL
IAD
0h 59m
Wed, Jun 27
IAD
PHL
1h 06m
Trip: 4 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

PHL
IAD
Excellent 8.0

Everything was on time and it was a good flight

PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Okay 4.3

Very rude crew.

Thu, Mar 15
PHL
IAD
0h 59m
Fri, Mar 16
IAD
PHL
0h 59m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Mediocre 2.0

First leg delayed on Tarmac for over an hour so I missed my connection. Then united rebooked me for the next day but gave me no voucher or money towards a hotel so I had to get one myself since it was all night in the Houston airport.mthem the rebooked flight had mechanical problems we had to change airplanes, and gates/terminals and were delayed another 2.5 hours. It was terrible.

PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

PHL
IAD
Excellent 10.0

The incoming plane was delayed due to 'equipment prep'. Since it was connecting me to my longer leg, I was nervous. The crew did a great job of deplaning everyone and getting the plane ready for our flight with very minimal delay.

It was a quick 30 minute flight and everything was fine.

PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

Thu, Apr 5
PHL
IAD
1h 01m
Fri, Apr 6
IAD
PHL
1h 01m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

PHL
IAD
Okay 4.3

Very rude crew.

PHL
IAD
Mediocre 2.0

First leg delayed on Tarmac for over an hour so I missed my connection. Then united rebooked me for the next day but gave me no voucher or money towards a hotel so I had to get one myself since it was all night in the Houston airport.mthem the rebooked flight had mechanical problems we had to change airplanes, and gates/terminals and were delayed another 2.5 hours. It was terrible.

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Excellent 10.0

On time bags made connection

Fri, Apr 6
PHL
IAD
1h 01m
Sat, Apr 7
IAD
PHL
0h 58m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Excellent 8.0

The seats were comfortable. Staff was loud. But flight was okay. On time.

PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Mediocre 2.0

First leg delayed on Tarmac for over an hour so I missed my connection. Then united rebooked me for the next day but gave me no voucher or money towards a hotel so I had to get one myself since it was all night in the Houston airport.mthem the rebooked flight had mechanical problems we had to change airplanes, and gates/terminals and were delayed another 2.5 hours. It was terrible.

Thu, Apr 5
PHL
IAD
1h 01m
Sun, Apr 8
IAD
PHL
1h 08m
Trip: 4 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Okay 4.3

Very rude crew.

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

PHL
IAD
Excellent 8.0

Everything was on time and it was a good flight

PHL
IAD
Excellent 10.0

The incoming plane was delayed due to 'equipment prep'. Since it was connecting me to my longer leg, I was nervous. The crew did a great job of deplaning everyone and getting the plane ready for our flight with very minimal delay.

It was a quick 30 minute flight and everything was fine.

Sat, Apr 7
PHL
IAD
1h 01m
Sun, Apr 8
IAD
PHL
1h 01m
Trip: 2 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

PHL
IAD
Excellent 8.0

Everything was on time and it was a good flight

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

PHL
IAD
Excellent 10.0

On time bags made connection

Fri, Apr 6
PHL
IAD
1h 01m
Sun, Apr 8
IAD
PHL
1h 01m
Trip: 3 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Okay 4.3

Showed up at gate to get my seat and attendants seemed flusterred and unprepared. It seemed that they were having trouble finding a seat for me and I could hear them discussing options with other airlines to get to my final destination

PHL
IAD
Okay 4.0

Uncomfortably warm!!

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

PHL
IAD
Excellent 10.0

The flight attendants were friendly and attentive to my needs. I like good service and friendliness so for this experience I give 5 stars

I was uncomfortable in my seat but that's expected on an airplane

Fri, Jun 22
PHL
IAD
1h 01m
Fri, Jun 29
IAD
PHL
1h 06m
Trip: 8 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Excellent 10.0

The incoming plane was delayed due to 'equipment prep'. Since it was connecting me to my longer leg, I was nervous. The crew did a great job of deplaning everyone and getting the plane ready for our flight with very minimal delay.

It was a quick 30 minute flight and everything was fine.

PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Okay 4.3

I paid for my luggage in advance and when I arrived at Philly airport it was not acknowledged

PHL
IAD
Excellent 10.0

On time bags made connection

PHL
IAD
Excellent 10.0

The flight attendants were friendly and attentive to my needs. I like good service and friendliness so for this experience I give 5 stars

I was uncomfortable in my seat but that's expected on an airplane

Tue, Mar 6
PHL
IAD
1h 01m
Mon, Mar 19
IAD
PHL
0h 56m
Trip: 13 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 34 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
PHL
IAD
Mediocre 2.0

Flight was disorganized because of maintenance issue

PHL
IAD
Okay 4.3

Very rude crew.

PHL
IAD
Excellent 8.0

Everything was on time and it was a good flight

PHL
IAD
Excellent 8.0

The seats were comfortable. Staff was loud. But flight was okay. On time.

PHL
IAD
Excellent 10.0

Everything went smoothe!

Not 1 thing.

Philadelphia to Washington Dulles Intl Flight Information

Avg. Flight Duration 1h 01m
Flights Arrive in Washington Dulles Intl
Flights Depart from Philadelphia
Flight Price $335
Distance 135 miles
Airlines United
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.