$175+ Cheap flights from Sky Harbor Intl (PHX) to Dulles Intl (IAD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
PHX — IAD
Oct 23 — Oct 301
Round-trip
1 adult, Economy
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Find cheap flights from Sky Harbor Intl to Dulles Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Phoenix Sky Harbor Intl to Washington, D.C. Dulles Intl are usually found in January or August, booked 72 days in advance, depart on a Friday or Tuesday and return on a Saturday
Cheap flight deals from Sky Harbor Intl to Dulles Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Sky Harbor Intl to Dulles IntlExplore the most affordable flight options available from Sky Harbor Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
Explore the most affordable flight options available from Sky Harbor Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 23, 2026.
This Mytrip deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/65:22 pm -
1 stop16h 14m
Sun 11/89:06 pm -
2 stops17h 49m
Deal found 9/20![Frontier logo]()
$336
This CheapOair deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2112:01 pm -
2 stops22h 13m
Tue 12/17:00 am -
2 stops16h 38m
Deal found 9/18![Frontier logo]()
$338
This Alaska Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:44 pm -
1 stop14h 00m
Sun 11/157:05 am -
1 stop10h 50m
Deal found 9/23![Alaska Airlines logo]()
$339
This Mytrip deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:38 pm -
2 stops18h 35m
Wed 10/146:00 am -
1 stop9h 17m
Deal found 9/21![Frontier logo]()
$340
This Kiwi.com deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/199:22 pm -
1 stop8h 05m
Mon 1/1110:57 pm -
2 stops13h 59m
Deal found 9/21![Frontier logo]()
$342
This Gotogate deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:47 pm -
1 stop12h 51m
Wed 10/146:00 am -
1 stop9h 17m
Deal found 9/23![Multiple Airlines logo]()
$343
This Mytrip deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/144:58 pm -
1 stop10h 46m
Wed 11/1812:31 pm -
1 stop13h 24m
Deal found 9/20![Multiple Airlines logo]()
$344
This Expedia deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/68:22 pm -
1 stop19h 18m
Mon 11/912:31 pm -
1 stop13h 24m
Deal found 9/19![Multiple Airlines logo]()
$345
This Gotogate deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:22 pm -
1 stop19h 18m
Sat 11/712:31 pm -
1 stop13h 24m
Deal found 9/23![Multiple Airlines logo]()
$346
This Mytrip deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:38 pm -
2 stops12h 56m
Sat 10/317:52 am -
2 stops18h 50m
Deal found 9/23![Frontier logo]()
$347
This Mytrip deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:32 pm -
2 stops18h 41m
Sat 10/176:00 am -
1 stop9h 17m
Deal found 9/18![Frontier logo]()
$348
Best flights from Sky Harbor Intl to Dulles IntlDiscover carefully curated flight deals from Sky Harbor Intl to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
Discover carefully curated flight deals from Sky Harbor Intl to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 23, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:44 pm -
1 stop14h 00m
Tue 11/177:46 am -
1 stop10h 09m
Deal found 9/20![Alaska Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:32 pm -
1 stop7h 38m
Sat 10/246:13 am -
1 stop9h 04m
Deal found 9/20![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:50 pm -
1 stop6h 25m
Sun 11/2910:00 pm -
1 stop6h 59m
Deal found 9/18![United Airlines logo]()
$462
This Alaska Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/131:44 pm -
1 stop14h 00m
Sun 11/157:05 am -
1 stop10h 50m
Deal found 9/19![Alaska Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/243:37 pm -
1 stop6h 53m
Sun 11/2910:00 pm -
1 stop6h 59m
Deal found 9/19![United Airlines logo]()
$462
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:05 pm -
Nonstop4h 22m
Fri 10/236:00 pm -
Nonstop4h 54m
Deal found 9/22![United Airlines logo]()
$477
This Alaska Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/167:38 am -
2 stops13h 21m
Mon 10/197:24 pm -
1 stop17h 02m
Deal found 9/23![Alaska Airlines logo]()
$503
This United Airlines deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/162:05 pm -
Nonstop4h 22m
Sat 10/248:35 am -
Nonstop4h 51m
Deal found 9/20![United Airlines logo]()
$501
This United Airlines deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/911:30 am -
1 stop9h 12m
Mon 12/145:55 pm -
Nonstop5h 18m
Deal found 9/22![United Airlines logo]()
$505
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/611:30 am -
1 stop9h 06m
Sun 1/105:45 pm -
Nonstop5h 10m
Deal found 9/21![United Airlines logo]()
$505
This United Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2411:59 pm -
Nonstop4h 09m
Thu 12/310:10 am -
1 stop9h 52m
Deal found 9/18![United Airlines logo]()
$509
This United Airlines deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2012:47 pm -
1 stop7h 38m
Wed 11/2512:55 pm -
Nonstop5h 13m
Deal found 9/21![United Airlines logo]()
$509
Last-minute flights from Sky Harbor Intl to Dulles IntlDiscover last-minute flight deals from Sky Harbor Intl to Dulles Intl. Data last updated September 23, 2026 and is based on user searches.
Discover last-minute flight deals from Sky Harbor Intl to Dulles Intl. Data last updated September 23, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/611:35 am -
1 stop9h 24m
Mon 10/196:00 am -
1 stop20h 18m
Deal found 9/19![Multiple Airlines logo]()
$350
This Cheapflightsfares deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/88:16 am -
1 stop19h 04m
Tue 10/136:00 am -
1 stop17h 15m
Deal found 9/22![Frontier logo]()
$351
This Mytrip deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/97:32 pm -
2 stops18h 41m
Sat 10/176:00 am -
1 stop9h 17m
Deal found 9/18![Frontier logo]()
$348
This Booking.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:12 pm -
1 stop9h 05m
Tue 10/136:00 am -
1 stop12h 29m
Deal found 9/22![Frontier logo]()
$341
This Expedia deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/109:02 am -
1 stop11h 57m
Sat 10/176:00 am -
1 stop9h 17m
Deal found 9/20![Multiple Airlines logo]()
$345
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:38 pm -
1 stop7h 42m
Sat 10/179:06 pm -
2 stops53h 12m
Deal found 9/20![Frontier logo]()
$354
This Mytrip deal was found by Cheapflights users on 9/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:38 pm -
2 stops18h 35m
Wed 10/146:00 am -
1 stop9h 17m
Deal found 9/21![Frontier logo]()
$340
This Gotogate deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:47 pm -
1 stop12h 51m
Wed 10/146:00 am -
1 stop9h 17m
Deal found 9/23![Multiple Airlines logo]()
$343
This Cheapflightsfares deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:16 am -
1 stop19h 04m
Fri 10/166:00 am -
1 stop9h 17m
Deal found 9/23![Frontier logo]()
$352
This Mytrip deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:38 pm -
2 stops12h 56m
Sat 10/317:52 am -
2 stops18h 50m
Deal found 9/23![Frontier logo]()
$347
This Alaska Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:02 am -
1 stop11h 57m
Tue 11/37:46 am -
1 stop11h 55m
Deal found 9/18![Alaska Airlines logo]()
$339
This Frontier deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:00 am -
2 stops14h 43m
Thu 11/197:40 am -
2 stops10h 57m
Deal found 9/18![Frontier logo]()
$355
One-way flights from Sky Harbor Intl to Dulles IntlSearch for one-way flight options from Sky Harbor Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
Search for one-way flight options from Sky Harbor Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 23, 2026.
This Expedia deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3012:45 pm -
1 stop13h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Alaska Airlines logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:22 pm -
1 stop16h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$179
This Super.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/253:11 pm -
1 stop11h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:15 am -
2 stops15h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Frontier logo]()
$182
This Mytrip deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/171:12 pm -
2 stops14h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$183
This Trip.com deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/199:22 pm -
1 stop8h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![Frontier logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 9/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:38 pm -
2 stops18h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 9/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:01 am -
2 stops40h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Frontier logo]()
$187
This Cheapflightsfares deal was found by Cheapflights users on 9/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:38 pm -
1 stop7h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/20![Frontier logo]()
$189
This United Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/142:05 pm -
Nonstop4h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/23![United Airlines logo]()
$190
Find flight deals from Sky Harbor Intl to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from Sky Harbor Intl (PHX) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $336 (Cheapflightsfares) |
One-way from | $175 (Expedia) |
Popular in | February |
Cheapest in | January |
Average price | $470 |
Good round-trip deal | $510 or less |
Good one-way deal | $248 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Sky Harbor Intl to Dulles Intl 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, Cheapflights users made 7,457,451 searches. Data last updated September 23, 2026.
Use the filters below to find and compare flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Sat 10/24
2:05 pm-9:27 pm
Nonstop4h 22m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$190
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Mon 11/30
8:18 pm-5:39 pm
1 stop19h 21m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$195
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Thu 11/19
3:34 pm-5:40 am
1 stop12h 06m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$199
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Wed 10/21
9:02 am-11:59 pm
1 stop11h 57m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$220
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Thu 10/1
7:08 am-6:14 pm
1 stop8h 06m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$235
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Wed 11/25
11:35 am-10:44 pm
1 stop9h 09m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$264
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Fri 10/16
2:05 pm-9:27 pm
Nonstop4h 22m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$284
Quickest round-trip
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Thu 10/29
10:59 pm-6:08 am
Nonstop4h 09m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$288
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Tue 11/24
11:59 pm-6:08 am
Nonstop4h 09m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$288
PhoenixWashington, D.C.
PHX Phoenix Sky Harbor Intl - IAD Washington, D.C. Dulles Intl
PHXIAD
Phoenix Sky Harbor Intl
Sun 11/1
3:08 pm-9:23 pm
Nonstop4h 15m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$288
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Sky Harbor Intl to Dulles Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Sky Harbor Intl to Dulles Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Phoenix Sky Harbor Intl Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Sky Harbor Intl to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Sky Harbor Intl with our price prediction graph.
PHX-IAD
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport
Prices
Delays
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How far ahead should I book a flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
To ensure you get the cheapest price possible for a flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $691). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from PHX to IAD?
Find hourly flight availability from Sky Harbor Intl to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 23, 2026.
It’s typically best to fly out from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport in the evening. Doing so could potentially save you 28% on the flight price compared to flying in the morning, which is usually more expensive.
What is the cheapest day to fly from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from Sky Harbor Intl to Dulles Intl. Price data was last updated on September 19, 2026.
Travelers seeking maximum savings on their Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Phoenix to Washington, D.C. delayed?
About 10% of weekly flights between Phoenix and Washington, D.C. have experienced delays in the past year, with the average delay time being 129 minutes.
What is the most punctual flight time for Phoenix to Washington, D.C. flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Phoenix to Washington, D.C. flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 7% of flights being delayed.
What’s the top layover airport for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
Share of 1-stop round-trip flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.
Atlanta (ATL) – chosen by Cheapflights users on 33% of 1-stop itineraries from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport on Cheapflights.
What’s the cheapest layover airport for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
Average round-trip fare for 1-stop flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Atlanta (ATL) is the most affordable 1-stop option, with an average round-trip price of $413.
What’s the fastest layover option from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
Shortest average travel time for 1-stop one-way flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Charlotte (CLT) have the shortest average one-way travel time for 1-stop routes: 6h 55m.
Which airport typically offers the quickest layover for flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport?
Average layover duration for 1-stop one-way flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Denver (DEN) offer the fastest connection on this route, with an average layover time of 1h 39m.
The best insider tips for Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated September 23, 2026.
Read through reviews of airlines operating flights from Phoenix Sky Harbor Intl Airport to Washington, D.C. Dulles Intl Airport, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Entertainment
7.5
Crew
8.6
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
Find useful and relevant information for your journey from Sky Harbor Intl to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Washington, D.C. Dulles Intl Airport?
Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locationsAlexandria
Arlington
Owings Mills
Lanham
Tysons
Chantilly
Woodbridge
Reston
Herndon
Hyattsville
Rockville
Fredericksburg
Falls Church
Sterling
Hanover
Laurel
Springfield
Oxon Hill
Clinton
Hunt Valley
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Sky Harbor Intl and Dulles Intl flights
Browse other Sky Harbor Intl and Dulles Intl flight options. Last updated on September 23, 2026.
Other flights from Sky Harbor Intl
Browse through other flights departing from Sky Harbor Intl. Flights are based on user searches made on Cheapflights and were last updated on September 23, 2026.
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Top 5 airlines flying from Sky Harbor Intl to Dulles Intl
Discover the top 5 airlines that operate flights from Sky Harbor Intl to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$150 | Average$288 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$187 | Average$383 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$298 | Average$521 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$356 | Average$474 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$377 | Average$584 | FlexibilityNo cancel fee | On-time63% |