Find Cheap Flights from Phoenix Sky Harbor Intl to Washington Dulles Intl (PHX - IAD)

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Fri 12/15
Fri 12/22
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Good to Know

Low Season:
October
Best time to beat the crowds
1%
expected price decrease
High Season:
December
Most popular time to fly
6%
expected price increase
Average Price:
$449
(avg. price over the last 2 weeks)
Good Deal:
$345
or less (round trip)

When to Book Flights from Phoenix Sky Harbor Intl to Washington Dulles Intl

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $345 or less.
The cheapest flight from Phoenix Sky Harbor Intl to Washington Dulles Intl was found 84 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
Morning departure is around 9% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Phoenix Sky Harbor Intl to Washington Dulles Intl Flights

How long does a flight from Phoenix Sky Harbor Intl to Washington Dulles Intl take?
An average nonstop flight takes 4h 06m, covering a distance of 1952 miles.
How many flights are there between Phoenix Sky Harbor Intl and Washington Dulles Intl?
There are 74 (nonstop) flights between Phoenix Sky Harbor Intl and Washington Dulles Intl per week, averaging 11 per day.
Which airlines provide the cheapest flights from Phoenix Sky Harbor Intl to Washington Dulles Intl?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($193), Multiple Airlines ($311) and United ($373).
Do I need a passport to fly between Phoenix Sky Harbor Intl and Washington Dulles Intl?
No.
Which airlines fly most frequently between Phoenix Sky Harbor Intl and Washington Dulles Intl?
SAS (2 times daily), Brussels Airlines (2 times daily), Lufthansa (2 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Phoenix Sky Harbor Intl to Washington Dulles Intl?
For Phoenix Sky Harbor Intl to Washington Dulles Intl, Tuesday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Washington Dulles Intl back to Phoenix Sky Harbor Intl, the best deals are generally found on Tuesday, with Saturday being the most expensive.

Book cheap flights from Phoenix Sky Harbor Intl to Washington Dulles Intl (round-trip)

Airports
Origin
Phoenix
$193
only
$193
Destination
Washington
$193
only
$193
Tue, Apr 24
PHX
IAD
5h 55m
Tue, May 1
IAD
PHX
6h 19m
Trip: 8 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33263 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

ORD
RSW
Excellent 10.0

We had 3 kids with us and the flight was on time and the staff was very nice

PHL
MCO
Mediocre 2.3

Its a scam! They act like they are giving you a break by having you buy cheap flights but in reality it costs more than a bit more expensive flight. I had to pay $45.00 each bag no matter if it was checked or carry-on. In total round trip I paid $180.00 extra just for my husbands carry-on as well as mine. Must add that our flights together cost 286.00. We should of went with American Airlines. On top of that we couldn't select our own seat if so, we had to pay extra, so we had to sit separated from each other. It was ridiculous! Never Again with this company!!!!!

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

Sun, Jan 7
PHX
IAD
7h 49m
Wed, Jan 10
IAD
PHX
13h 13m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Feb 1
PHX
IAD
4h 06m
Sat, Feb 3
IAD
PHX
5h 13m
Trip: 3 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 21 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
PHX
IAD
Good 7.0

Easy boarding

No TV

PHX
IAD
Mediocre 3.3

Like other airlines, United is charging more fees for seats to food. And the food they sell is bad. The breakfast was microwaved to horification. Why are airlines permited to give such low levels of service? Why are they allowed to charge extra fees for ordinary seats? And no complimentary entertainment. All that NOTHING" service and for very high fees.I got suckered into paying a lot extra for premium Economy. The Premium was the extra money they stole. The Economy was the new definition of bare bones.

There was nothing to like about the flight.

PHX
IAD
Mediocre 2.0

Poor last time to use united

RSW
EWR
Okay 5.3

Boarding quickly

No PED was available didn’t have anything for entertainment if you weren’t buying it seems every thing available for 3 hour flight and flight was scheduled for 2 hours and 55 minutes No snacks made available came thru once had a small bag of pretzels cup of coffee and never came back

RSW
EWR
Okay 5.3

Waiting

Tue, Apr 24
PHX
IAD
5h 55m
Tue, May 1
IAD
PHX
6h 19m
Trip: 8 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33263 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
PVD
DEN
Good 7.3

There's no "complimentary" snacks on Frontier. Which is fine, their flights are cheap and comfortable and the snacks are affordable. I also don't really appreciate having to pay for a carry on. I knew about this so made sure my bag would be considered a personal item, but I just don't know how I feel about that as a backpack may not even fit under that seat. But again, the flight was cheap. So, I don't know.

MSY
PVD
Excellent 8.0

The price!

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

PBI
TTN
Okay 4.0

The plane took off over an hr late due to lack of heat and the pilot had to reboot the system, once the plane finally took off the flught attendsnts then explained they would start the beverage service but were iut of most options and we could get ready to pay for what was left, maybe if they offered complimentary beverages at that point would've been a nice touch.

IAD
LAS
Excellent 9.0

Some questions aren't relevant to my flight. The pilot negotiated turbulence, and we arrived early.

Tue, May 1
PHX
IAD
5h 52m
Wed, May 9
IAD
PHX
6h 19m
Trip: 9 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33263 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

PHL
MCO
Mediocre 2.3

Its a scam! They act like they are giving you a break by having you buy cheap flights but in reality it costs more than a bit more expensive flight. I had to pay $45.00 each bag no matter if it was checked or carry-on. In total round trip I paid $180.00 extra just for my husbands carry-on as well as mine. Must add that our flights together cost 286.00. We should of went with American Airlines. On top of that we couldn't select our own seat if so, we had to pay extra, so we had to sit separated from each other. It was ridiculous! Never Again with this company!!!!!

DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

IAD
LAS
Excellent 9.0

Some questions aren't relevant to my flight. The pilot negotiated turbulence, and we arrived early.

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

Thu, Dec 28
PHX
IAD
7h 55m
Mon, Jan 1
IAD
PHX
9h 54m
Trip: 5 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 14235 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
ZAG
CDG
Good 6.0

Old plane, bad food & old crew

SEA
LAX
Okay 4.0

Nothing, they didn’t care about you or to help, the llady was so rude and unfriendly, this situation ruin my whole trip

I call in advance to paid the fees for baggage, I call Aeromexico because was the main airline for the fly, but Delta at Seattle made me paid again the fees for baggage’s even by phone they said that I didn’t need to paid. BE AWARE AND CAREFUL BECAUSE THE LADIES IN THE FRONT DESK didn’t even look the paperwork that you have in hand, they only want to charge you saying that your payment thru Aeromexico didn’t help you in the 1st fly. How this can happen when Delta and Aeromexico are two subsidiary one of another ?

SEA
LAX
Okay 5.3

Mu seat!

My baggage took for to long to arrive

GSO
ATL
Excellent 10.0

Plane nice and comfortable

SLC
SNA
Excellent 8.0

Comfortable seats in coach Good snacks Friendly crew

Nothing

Tue, May 1
PHX
IAD
5h 52m
Wed, May 9
IAD
PHX
6h 19m
Trip: 9 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33263 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

PBI
TTN
Okay 4.0

The plane took off over an hr late due to lack of heat and the pilot had to reboot the system, once the plane finally took off the flught attendsnts then explained they would start the beverage service but were iut of most options and we could get ready to pay for what was left, maybe if they offered complimentary beverages at that point would've been a nice touch.

MSY
PVD
Excellent 8.0

The price!

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

ORD
RSW
Excellent 10.0

We had 3 kids with us and the flight was on time and the staff was very nice

Fri, May 4
PHX
IAD
8h 15m
Mon, May 7
IAD
PHX
7h 25m
Trip: 4 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33263 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MSY
MCO
Excellent 10.0

Great crew great flight

Nothing, everything was awesome. Crazy to believe this was a 19 dollar flight

DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

MSY
PVD
Excellent 8.0

The price!

IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

Wed, Jan 3
PHX
IAD
31h 37m
Thu, Jan 11
IAD
PHX
7h 51m
Trip: 9 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 1
PHX
IAD
4h 06m
Thu, Mar 8
IAD
PHX
5h 12m
Trip: 8 days
6.9GoodShow reviews
Overall 6.9 Good
Based on 21 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
PHX
IAD
Good 7.0

Easy boarding

No TV

PHX
IAD
Good 6.3

Plane was clean. Didn't smell like last flight I was on. So that was a big plus.

No place to lay down.(you asked)

PHX
IAD
Good 6.0

Flight crew was helpful, good communication ahead of turbulence so people could use the restroom, etc.

I reserved an aisle seat at booking, but had a message to see gate attendent for seat assignment when i checked in. My seat was changed to middle position and there was no recourse. There are way too many people assigned group 3 and 4 , the line at pheonix and most other airports blocked the throughway for other people.

RSW
EWR
Okay 5.3

Boarding quickly

No PED was available didn’t have anything for entertainment if you weren’t buying it seems every thing available for 3 hour flight and flight was scheduled for 2 hours and 55 minutes No snacks made available came thru once had a small bag of pretzels cup of coffee and never came back

PHX
IAD
Good 6.3

Curtesy of staff

No seat reclining at all. Feeling very stiff by the end of the fight.

Sat, Jun 16
PHX
IAD
8h 15m
Sat, Jun 23
IAD
PHX
7h 25m
Trip: 8 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33263 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
IAD
LAS
Good 6.3

They gave me and someone else the same seat luckily it wasn’t a packed flight and was able to move to a row that was empty

LAS
IAD
Good 6.3

The staff on the flight was awesome, very helpful and kind to my friend who is terrified to fly. We were even ahead of schedule.

To pay for a carry on item is just crazy to me... not to mention you have to pay for beverages and snacks. All you are given is water.

DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

PVD
DEN
Good 7.3

There's no "complimentary" snacks on Frontier. Which is fine, their flights are cheap and comfortable and the snacks are affordable. I also don't really appreciate having to pay for a carry on. I knew about this so made sure my bag would be considered a personal item, but I just don't know how I feel about that as a backpack may not even fit under that seat. But again, the flight was cheap. So, I don't know.

ATL
DEN
Mediocre 3.6

The price was good, and it was a non stop flight.

The crew was rude and the seats didn't recline.

Sat, Jun 9
PHX
IAD
8h 15m
Fri, Jun 15
IAD
PHX
6h 19m
Trip: 7 days
5.6OkayShow reviews
Overall 5.6 Okay
Based on 33263 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
DEN
SFO
Mediocre 2.0

Website would not let me check in the day before or the morning or my flight. There was an error every time and I almost got to the end once. I could not change the time of my transportation and arrived 10 minutes past the check in deadline (an hour prior to the flight taking off). I was refused access to the flight and offered a flight 5 hours later. The staff was rude and not helpful. I had heard negative things about Frontier and now I know why.

PVD
DEN
Good 7.3

There's no "complimentary" snacks on Frontier. Which is fine, their flights are cheap and comfortable and the snacks are affordable. I also don't really appreciate having to pay for a carry on. I knew about this so made sure my bag would be considered a personal item, but I just don't know how I feel about that as a backpack may not even fit under that seat. But again, the flight was cheap. So, I don't know.

DEN
MKE
Good 6.6

Direct flight from Denver to Milwaukee. Didn't have to wait on tarmac so that was a plus.

Have to pay for every little thring down to the peanuts

PBI
TTN
Okay 4.0

The plane took off over an hr late due to lack of heat and the pilot had to reboot the system, once the plane finally took off the flught attendsnts then explained they would start the beverage service but were iut of most options and we could get ready to pay for what was left, maybe if they offered complimentary beverages at that point would've been a nice touch.

IAD
LAS
Excellent 9.0

Some questions aren't relevant to my flight. The pilot negotiated turbulence, and we arrived early.

Thu, Dec 28
PHX
IAD
7h 45m
Wed, Jan 3
IAD
PHX
10h 19m
Trip: 7 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 14235 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
JFK
YYZ
Excellent 10.0

The staff is very friendly. Most pleasant airline I've flown with.

ZAG
CDG
Good 6.0

Old plane, bad food & old crew

LGA
YUL
Excellent 8.0

it was easy to navigate .

SLC
SNA
Excellent 8.0

Comfortable seats in coach Good snacks Friendly crew

Nothing

ATL
ABE
Okay 4.0

Long wait for de-Icing. Got on and off the plane 3 times. First wait was 1 hour, but plane aborted takeoff. Second plane waited at gate with all aboard for 2-1/2 hours and never got slot and de-planed. Third plane waited 1-1/2 hours for de-Icing and finally we were headed home. Arrived 8.5 hours after schedule.

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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.