$118+ Cheap flights from Chicago (CHI) 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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — IAD
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Chicago 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 to Washington, D.C. Dulles Intl are usually found in May or July, booked 65 days in advance, depart on a Friday or Monday and return on a Thursday
Cheap flight deals from Chicago to Dulles Intl
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Cheapest flights from Chicago to Dulles IntlExplore the most affordable flight options available from Chicago to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
Explore the most affordable flight options available from Chicago to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2026.
This Booking.com deal was found by Cheapflights users on 10/27. 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 11/147:55 am -
1 stop11h 16m
Wed 11/187:48 am -
1 stop11h 42m
Deal found 10/27![Frontier logo]()
$196
This Trip.com deal was found by Cheapflights users on 10/28. 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.
Thu 12/176:52 am -
1 stop7h 21m
Mon 1/45:30 am -
1 stop19h 31m
Deal found 10/28![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/237:49 am -
1 stop6h 14m
Wed 12/212:06 pm -
1 stop10h 29m
Deal found 10/29![Frontier logo]()
$197
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 11/176:08 am -
1 stop10h 04m
Sat 11/2110:47 pm -
1 stop10h 27m
Deal found 10/28![Frontier logo]()
$198
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Wed 11/257:49 am -
1 stop6h 14m
Wed 12/210:33 pm -
2 stops22h 56m
Deal found 10/28![Frontier logo]()
$198
This Priceline deal was found by Cheapflights users on 10/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:49 am -
1 stop6h 19m
Tue 12/16:40 am -
1 stop8h 11m
Deal found 10/28![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 10/29. 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 11/249:09 am -
1 stop4h 54m
Tue 12/18:57 pm -
1 stop13h 29m
Deal found 10/29![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/257:49 am -
1 stop6h 14m
Thu 12/310:33 pm -
1 stop9h 42m
Deal found 10/29![Frontier logo]()
$200
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 11/196:08 am -
1 stop10h 04m
Sat 11/2110:47 pm -
1 stop10h 27m
Deal found 10/28![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Fri 11/277:49 am -
1 stop6h 03m
Fri 12/410:33 pm -
1 stop16h 57m
Deal found 10/27![Frontier logo]()
$201
This Expedia deal was found by Cheapflights users on 10/27. 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 11/147:15 am -
1 stop8h 57m
Tue 12/16:40 am -
1 stop5h 53m
Deal found 10/27![Frontier logo]()
$202
This CheapOair deal was found by Cheapflights users on 10/29. 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.
Thu 12/35:02 pm -
1 stop20h 47m
Mon 12/76:33 pm -
1 stop18h 00m
Deal found 10/29![Frontier logo]()
$203
Best flights from Chicago to Dulles IntlDiscover carefully curated flight deals from Chicago to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
Discover carefully curated flight deals from Chicago to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 30, 2026.
This Delta deal was found by Cheapflights users on 10/29. 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 12/36:00 am -
1 stop4h 39m
Mon 12/76:00 am -
1 stop4h 37m
Deal found 10/29![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 10/28. 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 1/206:15 pm -
Nonstop2h 03m
Fri 1/2210:28 pm -
Nonstop2h 16m
Deal found 10/28![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 10/29. 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.
Tue 12/86:00 am -
1 stop7h 01m
Thu 12/106:00 am -
1 stop5h 28m
Deal found 10/29![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 10/29. 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.
Wed 12/26:41 pm -
1 stop3h 42m
Mon 12/76:00 am -
1 stop4h 37m
Deal found 10/29![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 10/28. 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 1/610:30 am -
Nonstop2h 03m
Sat 1/95:16 pm -
Nonstop2h 24m
Deal found 10/28![United Airlines logo]()
$317
This Delta deal was found by Cheapflights users on 10/29. 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 11/216:44 pm -
1 stop3h 37m
Mon 11/236:00 am -
1 stop4h 46m
Deal found 10/29![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 10/26. 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 12/229:35 pm -
Nonstop2h 03m
Sat 1/26:10 am -
Nonstop2h 22m
Deal found 10/26![United Airlines logo]()
$342
This Delta deal was found by Cheapflights users on 10/30. 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 11/196:44 pm -
1 stop3h 37m
Sun 11/226:00 am -
1 stop5h 24m
Deal found 10/30![Delta logo]()
$328
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/211:00 pm -
Nonstop2h 03m
Fri 12/2512:40 pm -
1 stop3h 48m
Deal found 10/25![United Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/178:50 am -
Nonstop2h 02m
Sat 11/2110:47 pm -
Nonstop2h 14m
Deal found 10/29![United Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 10/28. 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.
Tue 1/195:45 pm -
1 stop6h 01m
Fri 1/227:37 pm -
1 stop5h 18m
Deal found 10/28![Delta logo]()
$337
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/176:10 pm -
Nonstop2h 03m
Sun 1/312:40 pm -
1 stop3h 48m
Deal found 10/29![United Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 10/30. 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 11/206:44 pm -
1 stop3h 37m
Sun 11/228:05 am -
1 stop4h 54m
Deal found 10/30![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/177:04 am -
Nonstop1h 58m
Tue 12/2912:40 pm -
1 stop3h 48m
Deal found 10/29![United Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 10/29. 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 12/2511:47 am -
1 stop10h 46m
Wed 12/3012:36 pm -
1 stop6h 08m
Deal found 10/29![Delta logo]()
$349
This Delta deal was found by Cheapflights users on 10/29. 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 12/2511:47 am -
1 stop10h 46m
Mon 1/412:49 pm -
1 stop6h 11m
Deal found 10/29![Delta logo]()
$349
This United Airlines deal was found by Cheapflights users on 10/26. 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 12/299:35 pm -
Nonstop2h 03m
Fri 1/112:40 pm -
1 stop3h 48m
Deal found 10/26![United Airlines logo]()
$400
This Delta deal was found by Cheapflights users on 10/29. 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 2/1110:40 am -
1 stop5h 50m
Sat 2/1311:05 am -
1 stop6h 32m
Deal found 10/29![Delta logo]()
$362
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/242:21 pm -
Nonstop2h 03m
Sat 11/286:11 am -
Nonstop2h 18m
Deal found 10/25![United Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 10/26. 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.
Wed 1/206:40 pm -
1 stop3h 37m
Sun 1/2410:56 am -
1 stop6h 58m
Deal found 10/26![Delta logo]()
$374
This Delta deal was found by Cheapflights users on 10/27. 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 12/247:00 am -
1 stop3h 56m
Mon 12/287:54 pm -
1 stop5h 08m
Deal found 10/27![Delta logo]()
$387
Last-minute flights from Chicago to Dulles IntlDiscover last-minute flight deals from Chicago to Dulles Intl. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Dulles Intl. Data last updated October 30, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 10/27. 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 11/147:55 am -
1 stop11h 16m
Wed 11/187:48 am -
1 stop11h 42m
Deal found 10/27![Frontier logo]()
$196
This Expedia deal was found by Cheapflights users on 10/27. 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 11/147:15 am -
1 stop8h 57m
Tue 12/16:40 am -
1 stop5h 53m
Deal found 10/27![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 11/167:55 am -
1 stop11h 16m
Wed 11/1811:16 am -
1 stop6h 51m
Deal found 10/28![Frontier logo]()
$203
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 11/176:08 am -
1 stop10h 04m
Sat 11/2110:47 pm -
1 stop10h 27m
Deal found 10/28![Frontier logo]()
$198
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 11/196:08 am -
1 stop10h 04m
Sat 11/2110:47 pm -
1 stop10h 27m
Deal found 10/28![Frontier logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/1910:19 am -
1 stop5h 53m
Sat 12/510:35 pm -
1 stop9h 45m
Deal found 10/29![Frontier logo]()
$204
This Priceline deal was found by Cheapflights users on 10/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/207:49 am -
1 stop6h 19m
Tue 12/16:40 am -
1 stop8h 11m
Deal found 10/28![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/237:49 am -
1 stop6h 14m
Wed 12/212:06 pm -
1 stop10h 29m
Deal found 10/29![Frontier logo]()
$197
This Frontier deal was found by Cheapflights users on 10/29. 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 11/249:09 am -
1 stop4h 54m
Tue 12/18:57 pm -
1 stop13h 29m
Deal found 10/29![Frontier logo]()
$200
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Wed 11/257:49 am -
1 stop6h 14m
Wed 12/210:33 pm -
2 stops22h 56m
Deal found 10/28![Frontier logo]()
$198
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/257:49 am -
1 stop6h 14m
Thu 12/310:33 pm -
1 stop9h 42m
Deal found 10/29![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Fri 11/277:49 am -
1 stop6h 03m
Fri 12/410:33 pm -
1 stop16h 57m
Deal found 10/27![Frontier logo]()
$201
One-way flights from Chicago to Dulles IntlSearch for one-way flight options from Chicago to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
Search for one-way flight options from Chicago to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 11/231:16 pm -
1 stop21h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 12/135:02 pm -
1 stop23h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 10/26. 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.
Tue 11/177:35 pm -
1 stop20h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$119
This Trip.com deal was found by Cheapflights users on 10/27. 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.
Wed 11/116:08 am -
1 stop10h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$120
This Super.com deal was found by Cheapflights users on 10/26. 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.
Sat 11/147:55 am -
1 stop11h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$120
This CheapOair deal was found by Cheapflights users on 10/28. 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 12/710:40 am -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 2/110:18 am -
2 stops13h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$121
This Super.com deal was found by Cheapflights users on 10/27. 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.
Thu 11/267:49 am -
1 stop6h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$122
This Super.com deal was found by Cheapflights users on 10/27. 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 12/231:11 pm -
1 stop10h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$123
This Super.com deal was found by Cheapflights users on 10/28. 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 12/185:58 am -
1 stop8h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$123
This Super.com deal was found by Cheapflights users on 10/29. 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.
Sat 11/147:15 am -
1 stop8h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Frontier logo]()
$124
This Super.com deal was found by Cheapflights users on 10/27. 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.
Tue 11/109:51 am -
1 stop23h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$124
Find flight deals from Chicago to Dulles Intl
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) 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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $196 (Booking.com) |
One-way from | $118 (Kiwi.com) |
Popular in | September |
Cheapest in | May |
Average price | $354 |
Good round-trip deal | $405 or less |
Good one-way deal | $256 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago 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 October 30, 2026.
Use the filters below to find and compare flights from Chicago to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Wed 11/18
6:04 am-8:58 am
Nonstop1h 54m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$135
ChicagoWashington, D.C.
MDW Chicago Midway - IAD Washington, D.C. Dulles Intl
MDWIAD
Chicago Midway
Tue 12/1
5:12 pm-12:41 am
1 stop6h 29m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$140
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Mon 11/23
11:19 am-4:26 pm
1 stop4h 07m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$140
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Wed 12/9
8:04 am-2:01 pm
1 stop4h 57m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$140
ChicagoWashington, D.C.
MDW Chicago Midway - IAD Washington, D.C. Dulles Intl
MDWIAD
Chicago Midway
Sat 12/5
6:41 pm-11:23 pm
1 stop3h 42m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$145
ChicagoWashington, D.C.
MDW Chicago Midway - IAD Washington, D.C. Dulles Intl
MDWIAD
Chicago Midway
Mon 11/23
6:44 pm-11:21 pm
1 stop3h 37m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$145
ChicagoWashington, D.C.
MDW Chicago Midway - IAD Washington, D.C. Dulles Intl
MDWIAD
Chicago Midway
Tue 11/10
6:08 am-5:12 pm
1 stop10h 04m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$148
ChicagoWashington, D.C.
MDW Chicago Midway - IAD Washington, D.C. Dulles Intl
MDWIAD
Chicago Midway
Sat 12/5
12:28 pm-10:07 am
2 stops20h 39m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$150
ChicagoWashington, D.C.
MDW Chicago Midway - IAD Washington, D.C. Dulles Intl
MDWIAD
Chicago Midway
Thu 11/19
6:08 am-1:25 pm
2 stops30h 17m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$151
ChicagoWashington, D.C.
ORD Chicago O'Hare Intl - IAD Washington, D.C. Dulles Intl
ORDIAD
Chicago O'Hare Intl
Fri 1/1
1:00 pm-4:03 pm
Nonstop2h 03m
Washington, D.C. Dulles Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$159
Showing 1-10 of 41 resultsSorted by cheapest first
Compare providers for flights from Chicago 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 Chicago to Dulles Intl in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago-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-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-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-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-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 Chicago to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Chicago with our price prediction graph.
CHI-IAD
ORD-IAD
MDW-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 to Washington, D.C. Dulles Intl Airport
CHI-IAD
ORD-IAD
MDW-IAD
What is the cheapest month to book a flight from Chicago to Washington, D.C. Dulles Intl Airport?
Currently, December is the cheapest month in which you can book a flight from Chicago to Washington, D.C. Dulles Intl Airport (average of $321). Flying from Chicago to Washington, D.C. Dulles Intl Airport in September is currently the most expensive (average of $441). 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 CHI to IAD?
Find hourly flight availability from Chicago 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 October 30, 2026.
A simple way to save on the total cost of your ticket is to fly from Chicago to Washington, D.C. Dulles Intl Airport in the morning. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight at noon.
How much does it cost to fly round-trip from Chicago to Washington, D.C. Dulles Intl Airport?
Airfare is below average for this route at the moment.
Chicago to Washington, D.C. Dulles Intl Airport flights typically cost between $338 and $519 in November.The cheapest round-trip price found within the last 5 days was $196 on Frontier (Nov 14-Nov 18).
How often are flights from Chicago to Washington, D.C. delayed?
About 18% of weekly flights between Chicago and Washington, D.C. have experienced delays in the past year, with the average delay time being 134 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?
Monday 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.
How far ahead should I book a flight from Chicago to Washington, D.C. Dulles Intl Airport?
The best time to book flights from Chicago to Washington, D.C. Dulles Intl Airport is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Chicago to Washington, D.C. Dulles Intl Airport?
Use this chart to determine the cheapest time to fly round-trip from Chicago to Dulles Intl. Price data was last updated on October 24, 2026.
Travelers seeking maximum savings on their Chicago 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.
The best insider tips for Chicago 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 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 October 30, 2026.
Read through reviews of airlines operating flights from Chicago to Washington, D.C. Dulles Intl Airport, such as United Airlines and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Crew
8.1
Overall
7.3
Food
6.7
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Boarding
7.7
Crew
8.1
Overall
7.3
Food
6.7
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Boarding
7.7
Crew
8.1
Overall
7.3
Food
6.7
Comfort
7.3
Entertainment
7.1
Reviews
1 / 20
10.0
ExcellentDane,Jan 2026
TYS - IAD
Related info for your journey
Find useful and relevant information for your journey from Chicago 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
Chantilly
Woodbridge
Arlington
Owings Mills
Sterling
Lanham
Reston
Herndon
Hyattsville
Rockville
Springfield
Fredericksburg
Tysons
Falls Church
Towson
Silver Spring
Oxon Hill
Laurel
Clinton
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Chicago and Dulles Intl flights
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Top 2 airlines flying from Chicago to Dulles Intl
Discover the top 2 airlines that operate flights from Chicago 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 October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$155 | Average$220 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$218 | Average$376 | FlexibilityNo cancel fee | On-time69% |