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Cheap flights from Phoenix to Washington, D.C. from $135

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Phoenix to Washington, D.C. departing on 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

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Frontier Logo
2:01 pm - 12:19 amPHX-IAD
8h 18m1 stop
Frontier Logo
1:21 pm - 12:30 amIAD-PHX
13h 09m2 stops
$210Frontier
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Fri, Dec 12 - Mon, Dec 15
Frontier Logo
2:01 pm - 12:19 amPHX-IAD
8h 18m1 stop
Frontier Logo
7:05 am - 3:13 pmIAD-PHX
10h 08m1 stop
$211Frontier
Find Deal
Mon, Dec 15 - Tue, Jan 6
Multiple Airlines Logo
6:45 am - 10:19 pmPHX-IAD
13h 34m2 stops
Multiple Airlines Logo
7:05 am - 3:13 pmIAD-PHX
10h 08m1 stop
$233Multiple Airlines
Find Deal
Wed, Dec 17 - Tue, Jan 6
Frontier Logo
1:28 pm - 11:55 pmPHX-IAD
7h 27m1 stop
Frontier Logo
6:00 am - 3:03 pmIAD-PHX
11h 03m1 stop
$234Frontier
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Sat, Nov 1 - Mon, Nov 3
Multiple Airlines Logo
5:12 pm - 12:44 pmPHX-IAD
17h 32m1 stop
Multiple Airlines Logo
8:40 am - 9:31 amIAD-PHX
26h 51m2 stops
$248Multiple Airlines
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Sun, Nov 2 - Tue, Nov 4
Southwest Logo
11:00 am - 5:05 pmPHX-IAD
4h 05mnonstop
Southwest Logo
4:40 pm - 7:40 pmIAD-PHX
5h 00mnonstop
$289Southwest
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Mon, Nov 10 - Tue, Nov 18
United Airlines Logo
8:10 am - 4:39 pmPHX-IAD
6h 29m1 stop
United Airlines Logo
6:20 am - 11:47 amIAD-PHX
7h 27m1 stop
$297United Airlines
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Wed, Dec 24 - Thu, Jan 1
Southwest Logo
1:55 pm - 11:30 pmPHX-IAD
7h 35m1 stop
Southwest Logo
4:40 pm - 7:40 pmIAD-PHX
5h 00mnonstop
$299Southwest
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Mon, Nov 10 - Tue, Nov 18
United Airlines Logo
3:12 pm - 9:25 pmPHX-IAD
4h 13mnonstop
United Airlines Logo
5:30 pm - 8:43 pmIAD-PHX
5h 13mnonstop
$303United Airlines
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Sat, Nov 15 - Mon, Nov 24
Alaska Airlines Logo
3:15 pm - 5:13 pmPHX-IAD
22h 58m1 stop
Alaska Airlines Logo
5:40 pm - 9:21 amIAD-PHX
17h 41m1 stop
$307Alaska Airlines
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Fri, Oct 31 - Tue, Nov 4

Frontier flights from Phoenix to Washington, D.C. Dulles Intl Airport

Our best Frontier deals on Phoenix to Washington, D.C. Dulles Intl Airport flight tickets
Frontier
Dec 12
PHX2:01 pmPhoenix Sky Harbor Intl
8h 18m
1 stop
IAD12:19 amWashington, D.C. Dulles Intl
Dec 15
IAD1:21 pmWashington, D.C. Dulles Intl
13h 09m
2 stops
PHX12:30 amPhoenix Sky Harbor Intl
$210
Find similar
Frontier
Dec 15
PHX2:01 pmPhoenix Sky Harbor Intl
8h 18m
1 stop
IAD12:19 amWashington, D.C. Dulles Intl
Jan 6
IAD7:05 amWashington, D.C. Dulles Intl
10h 08m
1 stop
PHX3:13 pmPhoenix Sky Harbor Intl
$211
Find similar
Frontier
Nov 1
PHX1:28 pmPhoenix Sky Harbor Intl
7h 27m
1 stop
IAD11:55 pmWashington, D.C. Dulles Intl
Nov 3
IAD6:00 amWashington, D.C. Dulles Intl
11h 03m
1 stop
PHX3:03 pmPhoenix Sky Harbor Intl
$234
Find similar

Southwest flights from Phoenix to Washington, D.C. Dulles Intl Airport

Our best Southwest deals on Phoenix to Washington, D.C. Dulles Intl Airport flight tickets
Southwest
Nov 10
PHX11:00 amPhoenix Sky Harbor Intl
4h 05m
IAD5:05 pmWashington, D.C. Dulles Intl
Nov 18
IAD4:40 pmWashington, D.C. Dulles Intl
5h 00m
PHX7:40 pmPhoenix Sky Harbor Intl
$289
Find similar
Southwest
Nov 10
PHX1:55 pmPhoenix Sky Harbor Intl
7h 35m
1 stop
IAD11:30 pmWashington, D.C. Dulles Intl
Nov 18
IAD4:40 pmWashington, D.C. Dulles Intl
5h 00m
PHX7:40 pmPhoenix Sky Harbor Intl
$299
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Phoenix to Washington, D.C. Dulles Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 14, 2025.
Use the filters below to find and compare flights from Phoenix to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Fri 12/12

2:01 pm-12:19 am

1 stop8h 18m

Washington, D.C. Dulles Intl

Mon 12/15

1:21 pm-12:30 am

2 stops13h 09m

$210

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Mon 12/15

2:01 pm-12:19 am

1 stop8h 18m

Washington, D.C. Dulles Intl

Tue 1/6

7:05 am-3:13 pm

1 stop10h 08m

$211

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 12/17

6:45 am-10:19 pm

2 stops13h 34m

Washington, D.C. Dulles Intl

Tue 1/6

7:05 am-3:13 pm

1 stop10h 08m

$233

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Sat 11/1

1:28 pm-11:55 pm

1 stop7h 27m

Washington, D.C. Dulles Intl

Mon 11/3

6:00 am-3:03 pm

1 stop11h 03m

$234

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Sun 11/2

5:12 pm-12:44 pm

1 stop17h 32m

Washington, D.C. Dulles Intl

Tue 11/4

8:40 am-9:31 am

2 stops26h 51m

$248

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Mon 11/10

11:00 am-5:05 pm

Nonstop4h 05m

Washington, D.C. Dulles Intl

Tue 11/18

4:40 pm-7:40 pm

Nonstop5h 00m

$289

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Wed 12/24

8:10 am-4:39 pm

1 stop6h 29m

Washington, D.C. Dulles Intl

Thu 1/1

6:20 am-11:47 am

1 stop7h 27m

$297

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Mon 11/10

1:55 pm-11:30 pm

1 stop7h 35m

Washington, D.C. Dulles Intl

Tue 11/18

4:40 pm-7:40 pm

Nonstop5h 00m

$299

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Sat 11/15

3:12 pm-9:25 pm

Nonstop4h 13m

Washington, D.C. Dulles Intl

Mon 11/24

5:30 pm-8:43 pm

Nonstop5h 13m

$303

PhoenixWashington, D.C.

PHX - IAD

PHXIAD

Phoenix Sky Harbor Intl

Fri 10/31

3:15 pm-5:13 pm

1 stop22h 58m

Washington, D.C. Dulles Intl

Tue 11/4

5:40 pm-9:21 am

1 stop17h 41m

$307

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Phoenix to Washington, D.C. Dulles Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Washington, D.C. Dulles Intl Airport?

In general, August is the cheapest month to fly from Phoenix to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $299. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of August, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $332.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $487. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Phoenix to Washington, D.C. Dulles Intl Airport for around $710.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Phoenix in the evening is the least expensive time of day to depart. momondo users have found prices as low as $451 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $746 on average. Flights to Washington, D.C. Dulles Intl Airport from Phoenix at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Phoenix to Washington, D.C. Dulles Intl flight route?

Fly from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl for the best Phoenix - Washington, D.C. Dulles Intl flight prices

How far in advance should I book a flight to Washington, D.C. Dulles Intl Airport?

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Phoenix when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $384 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Phoenix for as low as $286 on momondo.

What cabin class options are available on Phoenix to Washington, D.C. Dulles Intl flights?

There are 4 cabin classes available to choose from on Phoenix to Washington, D.C. Dulles Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Phoenix to Washington, D.C. Dulles Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Phoenix to Washington, D.C. Dulles Intl Airport

Fastest flight time

4h 00m

Direct flights

Every day
The fastest flight from Phoenix to Washington, D.C. Dulles Intl Airport takes 4h 00m
Direct flights go from Phoenix to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

  • How far is Phoenix to Washington, D.C. Dulles Intl by plane?

    Phoenix and Washington, D.C. Dulles Intl are 1954.1 mi apart from one another. In terms of flight time, this usually takes a little over 4h 05m.

  • When did momondo last update prices for flights from Phoenix to Washington, D.C. Dulles Intl Airport?

    Prices for flights from Phoenix to Washington, D.C. Dulles Intl Airport are updated daily.

  • How many operators does momondo search for flights from Phoenix to Washington, D.C. Dulles Intl Airport?

  • How old do you have to be to fly from Phoenix to Washington, D.C. Dulles Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Phoenix to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Phoenix to Washington, D.C. Dulles Intl Airport

Compare and see reviews for airlines that fly from Phoenix to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $147Free CancellationRating
5.8
3,136 reviews
Search Frontier flights
SouthwestPriceFrom $239Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
DeltaPriceFrom $276Free CancellationRating
7.9
7,972 reviews
Search Delta flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Winchester
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Harpers Ferry
Towson
Rockville
Manassas
Fairfax
Reston
Gaithersburg
Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from Phoenix to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from Phoenix.

Can I find flights from Phoenix to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Phoenix with this policy.

How can momondo help me find flights from Phoenix to Washington, D.C.?

Once all potential Phoenix to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Phoenix to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Phoenix to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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