$89+ Cheap flights from O'Hare Intl (ORD) to Dulles Intl (IAD)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IAD
Sep 19 — Sep 261
Round-trip
1 adult, Economy
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Find cheap flights from O'Hare 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 Chicago O'Hare Intl to Washington, D.C. Dulles Intl are usually found in September or October, booked 79 days in advance, depart on a Friday or Monday and return on a Thursday
Cheap flight deals from O'Hare Intl to Dulles Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from O'Hare Intl to Dulles IntlExplore the most affordable flight options available from O'Hare Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.
Explore the most affordable flight options available from O'Hare Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2026.
This CheapOair deal was found by Cheapflights users on 8/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:50 pm -
1 stop17h 27m
Fri 9/1810:27 am -
1 stop13h 32m
Deal found 8/20![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Thu 9/247:11 am -
1 stop11h 58m
Mon 9/286:13 pm -
2 stops18h 38m
Deal found 8/15![Frontier logo]()
$183
This Frontier deal was found by Cheapflights users on 8/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/316:30 am -
1 stop10h 06m
Mon 11/21:30 pm -
1 stop7h 25m
Deal found 8/20![Frontier logo]()
$184
This Frontier deal was found by Cheapflights users on 8/16. 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.
Tue 9/88:05 am -
1 stop10h 39m
Tue 9/1511:12 am -
1 stop12h 47m
Deal found 8/16![Frontier logo]()
$185
This Kissandfly.com deal was found by Cheapflights users on 8/16. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:26 am -
1 stop5h 52m
Mon 9/1410:27 pm -
Nonstop2h 13m
Deal found 8/16![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 8/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/302:03 pm -
1 stop9h 25m
Tue 11/37:00 am -
1 stop6h 02m
Deal found 8/20![Frontier logo]()
$187
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Thu 9/176:25 am -
Nonstop1h 58m
Thu 9/173:15 pm -
Nonstop2h 14m
Deal found 8/15![United Airlines logo]()
$191
This Frontier deal was found by Cheapflights users on 8/16. 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.
Fri 10/168:11 pm -
1 stop13h 06m
Sat 10/1712:30 pm -
1 stop7h 37m
Deal found 8/16![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/1410:26 am -
1 stop5h 52m
Mon 9/216:36 pm -
2 stops29h 23m
Deal found 8/17![Multiple Airlines logo]()
$195
This Frontier deal was found by Cheapflights users on 8/16. 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.
Thu 10/158:04 am -
1 stop11h 07m
Mon 10/1912:30 pm -
1 stop12h 56m
Deal found 8/16![Frontier logo]()
$196
This Delta deal was found by Cheapflights users on 8/20. 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.
Thu 9/176:00 am -
1 stop4h 45m
Mon 9/217:17 pm -
1 stop5h 42m
Deal found 8/20![Delta logo]()
$197
Best flights from O'Hare Intl to Dulles IntlDiscover carefully curated flight deals from O'Hare Intl to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.
Discover carefully curated flight deals from O'Hare Intl to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 20, 2026.
This Delta deal was found by Cheapflights users on 8/15. 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.
Thu 9/176:00 am -
1 stop4h 45m
Mon 9/217:17 pm -
1 stop5h 42m
Deal found 8/15![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Sat 9/2612:55 pm -
Nonstop2h 06m
Mon 9/283:47 pm -
Nonstop2h 18m
Deal found 8/15![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 8/16. 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.
Sat 10/36:00 am -
1 stop4h 45m
Wed 10/76:05 am -
1 stop5h 24m
Deal found 8/16![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/236:30 am -
Nonstop1h 58m
Sat 9/2612:40 pm -
1 stop4h 10m
Deal found 8/18![United Airlines logo]()
$293
This Delta deal was found by Cheapflights users on 8/15. 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.
Thu 9/248:55 am -
1 stop6h 35m
Sun 9/276:10 am -
1 stop5h 27m
Deal found 8/15![Delta logo]()
$293
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/239:30 pm -
1 stop8h 44m
Mon 9/286:10 am -
Nonstop2h 15m
Deal found 8/17![United Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:00 am -
1 stop4h 45m
Tue 9/156:07 pm -
1 stop6h 52m
Deal found 8/18![Delta logo]()
$308
This United Airlines deal was found by Cheapflights users on 8/17. 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 9/29:39 pm -
Nonstop2h 05m
Sat 9/123:15 pm -
Nonstop2h 14m
Deal found 8/17![United Airlines logo]()
$315
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Sat 9/262:37 pm -
Nonstop2h 07m
Sun 9/2712:40 pm -
1 stop4h 10m
Deal found 8/16![United Airlines logo]()
$320
This Delta deal was found by Cheapflights users on 8/16. 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 10/25:10 pm -
1 stop5h 04m
Sun 10/47:17 pm -
1 stop5h 42m
Deal found 8/16![Delta logo]()
$332
This Delta deal was found by Cheapflights users on 8/15. 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 9/255:10 pm -
1 stop5h 04m
Mon 9/285:15 pm -
1 stop4h 15m
Deal found 8/15![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 8/16. 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 9/259:52 pm -
Nonstop2h 06m
Sun 9/2712:40 pm -
1 stop4h 10m
Deal found 8/16![United Airlines logo]()
$359
Last-minute flights from O'Hare Intl to Dulles IntlDiscover last-minute flight deals from O'Hare Intl to Dulles Intl. Data last updated August 20, 2026 and is based on user searches.
Discover last-minute flight deals from O'Hare Intl to Dulles Intl. Data last updated August 20, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/17. 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.
Mon 9/79:10 pm -
1 stop11h 57m
Wed 9/911:12 am -
1 stop12h 47m
Deal found 8/17![Frontier logo]()
$196
This Frontier deal was found by Cheapflights users on 8/17. 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.
Tue 9/87:05 am -
1 stop9h 09m
Sat 9/1212:30 pm -
1 stop8h 11m
Deal found 8/17![Frontier logo]()
$184
This Frontier deal was found by Cheapflights users on 8/16. 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.
Tue 9/88:05 am -
1 stop10h 39m
Tue 9/1511:12 am -
1 stop12h 47m
Deal found 8/16![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 8/17. 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.
Tue 9/87:05 am -
1 stop9h 09m
Fri 9/1111:12 am -
1 stop12h 47m
Deal found 8/17![Frontier logo]()
$193
This Kissandfly.com deal was found by Cheapflights users on 8/16. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:26 am -
1 stop5h 52m
Mon 9/1410:27 pm -
Nonstop2h 13m
Deal found 8/16![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 8/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/117:11 am -
1 stop11h 58m
Mon 9/1412:30 pm -
1 stop8h 05m
Deal found 8/19![Frontier logo]()
$187
This CheapOair deal was found by Cheapflights users on 8/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:50 pm -
1 stop17h 27m
Fri 9/1810:27 am -
1 stop13h 32m
Deal found 8/20![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 9/1410:26 am -
1 stop5h 52m
Mon 9/216:36 pm -
2 stops29h 23m
Deal found 8/17![Multiple Airlines logo]()
$195
This United Airlines deal was found by Cheapflights users on 8/15. 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.
Thu 9/176:25 am -
Nonstop1h 58m
Thu 9/173:15 pm -
Nonstop2h 14m
Deal found 8/15![United Airlines logo]()
$191
This Delta deal was found by Cheapflights users on 8/20. 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.
Thu 9/176:00 am -
1 stop4h 45m
Mon 9/217:17 pm -
1 stop5h 42m
Deal found 8/20![Delta logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 8/15. 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.
Thu 9/247:11 am -
1 stop11h 58m
Mon 9/286:13 pm -
2 stops18h 38m
Deal found 8/15![Frontier logo]()
$183
One-way flights from O'Hare Intl to Dulles IntlSearch for one-way flight options from O'Hare Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.
Search for one-way flight options from O'Hare Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 20, 2026.
This United Airlines deal was found by Cheapflights users on 8/17. 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.
Mon 11/29:41 pm -
Nonstop1h 49m
Deal found 8/17![United Airlines logo]()
$89
This Trip.com deal was found by Cheapflights users on 8/15. 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.
Mon 11/26:30 am -
1 stop16h 58m
Deal found 8/15![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 8/16. 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.
Fri 10/168:11 pm -
1 stop13h 06m
Deal found 8/16![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 8/17. 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.
Fri 9/183:50 pm -
1 stop17h 27m
Deal found 8/17![Frontier logo]()
$93
This iWofly deal was found by Cheapflights users on 8/18. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:55 pm -
1 stop32h 25m
Deal found 8/18![Frontier logo]()
$94
This Kiwi.com deal was found by Cheapflights users on 8/15. 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 9/1410:26 am -
1 stop12h 44m
Deal found 8/15![Frontier logo]()
$96
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:42 pm -
1 stop4h 34m
Deal found 8/19![Delta logo]()
$99
This Super.com deal was found by Cheapflights users on 8/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:26 am -
1 stop5h 52m
Deal found 8/20![Frontier logo]()
$107
This Flightnetwork deal was found by Cheapflights users on 8/17. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:29 pm -
1 stop15h 48m
Deal found 8/17![Frontier logo]()
$111
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Mon 9/1410:50 am -
Nonstop2h 05m
Deal found 8/16![United Airlines logo]()
$115
Find flight deals from O'Hare Intl to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 August 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $182 (CheapOair) |
One-way from | $89 (United Airlines) |
Popular in | July |
Cheapest in | September |
Average price | $419 |
Good round-trip deal | $385 or less |
Good one-way deal | $254 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from O'Hare 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 August 20, 2026.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Thu 9/17
6:00 am-11:45 am
1 stop4h 45m
Washington, D.C. Dulles Intl
Mon 9/21
7:17 pm-11:59 pm
1 stop5h 42m
$197
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Sat 10/3
6:00 am-11:45 am
1 stop4h 45m
Washington, D.C. Dulles Intl
Wed 10/7
6:05 am-10:29 am
1 stop5h 24m
$197
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Sat 9/26
12:55 pm-4:01 pm
Nonstop2h 06m
Washington, D.C. Dulles Intl
Mon 9/28
3:47 pm-5:05 pm
Nonstop2h 18m
$257
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Wed 9/23
6:30 am-9:28 am
Nonstop1h 58m
Washington, D.C. Dulles Intl
Sat 9/26
12:40 pm-3:50 pm
1 stop4h 10m
$293
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Thu 9/24
8:55 am-4:30 pm
1 stop6h 35m
Washington, D.C. Dulles Intl
Sun 9/27
6:10 am-10:37 am
1 stop5h 27m
$293
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Mon 9/14
6:00 am-11:45 am
1 stop4h 45m
Washington, D.C. Dulles Intl
Tue 9/15
6:07 pm-11:59 pm
1 stop6h 52m
$308
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Wed 9/23
9:30 pm-7:14 am
1 stop8h 44m
Washington, D.C. Dulles Intl
Mon 9/28
6:10 am-7:25 am
Nonstop2h 15m
$310
Quickest round-trip
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Wed 9/2
9:39 pm-12:44 am
Nonstop2h 05m
Washington, D.C. Dulles Intl
Sat 9/12
3:15 pm-4:29 pm
Nonstop2h 14m
$315
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Sat 9/26
2:37 pm-5:44 pm
Nonstop2h 07m
Washington, D.C. Dulles Intl
Sun 9/27
12:40 pm-3:50 pm
1 stop4h 10m
$320
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Fri 10/2
5:10 pm-11:14 pm
1 stop5h 04m
Washington, D.C. Dulles Intl
Sun 10/4
7:17 pm-11:59 pm
1 stop5h 42m
$332
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from O'Hare 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 O'Hare Intl to Dulles Intl in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare 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 O'Hare Intl to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from O'Hare Intl with our price prediction graph.
ORD-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 Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport
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Delays
How far ahead should I book a flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?
To ensure you get the cheapest price possible for a flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 78 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 Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?
Currently, September is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport (average of $312). Flying from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $423). 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 ORD to IAD?
Find hourly flight availability from O'Hare 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 August 20, 2026.
It’s typically best to fly out from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport in the morning. Doing so could potentially save you 38% on the flight price compared to flying at noon, which is usually more expensive.
What is the cheapest day to fly from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Dulles Intl. Price data was last updated on August 15, 2026.
Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
How often are flights from Chicago to Washington, D.C. delayed?
About 17% of weekly flights between Chicago and Washington, D.C. have experienced delays in the past year, with the average delay time being 139 minutes.
What is the most punctual flight time for Chicago to Washington, D.C. flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday 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 Chicago to Washington, D.C. flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 17% of flights being delayed.
The best insider tips for Chicago O'Hare 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 Chicago O'Hare 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 August 20, 2026.
See what other customers who have flown with United Airlines and Frontier from Chicago O'Hare Intl Airport to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Boarding
7.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Boarding
7.7
Overall
7.4
Entertainment
7.1
Crew
8.1
Comfort
7.3
Food
6.7
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
Find useful and relevant information for your journey from O'Hare 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
Owings Mills
Arlington
Tysons
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Sterling
Hanover
Laurel
Springfield
Oxon Hill
Clinton
Hunt Valley
Woodbridge
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O'Hare Intl and Dulles Intl flights
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Top 2 airlines flying from O'Hare Intl to Dulles Intl
Discover the top 2 airlines that operate flights from O'Hare 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 August 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$80 | Average$187 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$230 | Average$364 | FlexibilityNo cancel fee | On-time69% |