$95+ Cheap flights from Dulles Intl (IAD) to Chicago (CHI)
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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — CHI
Oct 13 — Oct 201
Round-trip
1 adult, Economy
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Find cheap flights from Dulles Intl to Chicago 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 Washington, D.C. Dulles Intl to Chicago are usually found in October or February, booked 60 days in advance, depart on a Thursday or Friday and return on a Friday
Cheap flight deals from Dulles Intl to Chicago
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Cheapest flights from Dulles Intl to ChicagoExplore the most affordable flight options available from Dulles Intl to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
Explore the most affordable flight options available from Dulles Intl to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/297:40 am -
1 stop17h 07m
Sat 10/317:25 am -
1 stop8h 47m
Deal found 9/9![Frontier logo]()
$178
This Expedia deal was found by Cheapflights users on 9/8. 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 9/297:50 am -
1 stop11h 33m
Wed 9/301:21 pm -
1 stop15h 59m
Deal found 9/8![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/37:50 am -
1 stop11h 33m
Wed 10/77:28 pm -
1 stop20h 45m
Deal found 9/9![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/37:50 am -
1 stop11h 01m
Sat 10/106:21 am -
1 stop9h 52m
Deal found 9/10![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/317:52 am -
1 stop5h 59m
Mon 11/210:26 am -
1 stop5h 46m
Deal found 9/10![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/289:06 pm -
1 stop12h 50m
Sun 11/17:50 pm -
1 stop20h 22m
Deal found 9/10![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 11/38:05 am -
1 stop5h 46m
Sun 11/87:50 pm -
1 stop26h 53m
Deal found 9/9![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/49:04 pm -
1 stop13h 16m
Mon 10/267:44 pm -
1 stop20h 28m
Deal found 9/10![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/229:06 pm -
1 stop22h 25m
Mon 10/267:44 pm -
1 stop20h 28m
Deal found 9/11![Frontier logo]()
$194
This Frontier deal was found by Cheapflights users on 9/9. 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.
Wed 9/307:50 am -
1 stop11h 33m
Wed 10/76:20 am -
1 stop9h 58m
Deal found 9/9![Frontier logo]()
$195
This Expedia deal was found by Cheapflights users on 9/9. 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.
Wed 9/307:50 am -
1 stop11h 01m
Sat 10/36:25 am -
1 stop9h 53m
Deal found 9/9![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 10/279:06 pm -
1 stop21h 41m
Sat 10/317:25 am -
1 stop8h 47m
Deal found 9/12![Frontier logo]()
$197
Best flights from Dulles Intl to ChicagoDiscover carefully curated flight deals from Dulles Intl to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
Discover carefully curated flight deals from Dulles Intl to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 13, 2026.
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/2810:47 pm -
Nonstop2h 14m
Thu 10/295:55 am -
Nonstop1h 54m
Deal found 9/8![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 9/8. 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 10/246:12 pm -
1 stop6h 45m
Mon 10/2610:30 am -
1 stop6h 03m
Deal found 9/8![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 9/8. 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 10/208:20 am -
Nonstop2h 18m
Tue 10/279:41 pm -
Nonstop1h 49m
Deal found 9/8![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 9/9. 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 10/156:05 am -
1 stop4h 27m
Sat 10/179:29 am -
1 stop5h 47m
Deal found 9/9![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/196:10 am -
Nonstop2h 15m
Sat 10/2412:55 pm -
Nonstop2h 06m
Deal found 9/10![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/2910:47 pm -
Nonstop2h 14m
Sat 10/316:12 pm -
Nonstop2h 03m
Deal found 9/10![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 9/8. 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 12/286:00 am -
1 stop3h 50m
Thu 12/316:00 am -
1 stop5h 43m
Deal found 9/8![Delta logo]()
$343
This Delta deal was found by Cheapflights users on 9/10. 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 11/196:00 am -
1 stop4h 42m
Sat 11/219:30 am -
1 stop5h 48m
Deal found 9/10![Delta logo]()
$347
This United Airlines deal was found by Cheapflights users on 9/8. 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 12/313:30 pm -
Nonstop2h 24m
Sat 1/211:09 am -
Nonstop2h 03m
Deal found 9/8![United Airlines logo]()
$323
This Delta deal was found by Cheapflights users on 9/12. 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 10/286:05 am -
1 stop4h 27m
Wed 10/285:09 pm -
1 stop6h 33m
Deal found 9/12![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 9/10. 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 am -
Nonstop2h 22m
Sun 12/207:04 am -
Nonstop1h 58m
Deal found 9/10![United Airlines logo]()
$344
This Delta deal was found by Cheapflights users on 9/12. 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 10/1412:29 pm -
1 stop4h 45m
Sat 10/179:29 am -
1 stop5h 47m
Deal found 9/12![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/12. 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 10/1310:18 pm -
Nonstop2h 14m
Fri 10/1610:54 am -
Nonstop2h 05m
Deal found 9/12![United Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 9/12. 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 10/1412:29 pm -
1 stop4h 45m
Thu 10/159:29 am -
1 stop5h 59m
Deal found 9/12![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 9/12. 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 10/306:11 am -
Nonstop2h 19m
Mon 11/29:41 pm -
Nonstop1h 49m
Deal found 9/12![United Airlines logo]()
$353
This Delta deal was found by Cheapflights users on 9/10. 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.
Sun 10/116:05 am -
1 stop4h 27m
Tue 10/136:44 pm -
1 stop3h 32m
Deal found 9/10![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 11/151:15 pm -
Nonstop2h 23m
Wed 11/186:04 am -
Nonstop1h 54m
Deal found 9/11![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 9/12. 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 10/226:05 am -
1 stop4h 27m
Mon 10/266:44 pm -
1 stop3h 32m
Deal found 9/12![Delta logo]()
$367
This United Airlines deal was found by Cheapflights users on 9/8. 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 12/1912:40 pm -
1 stop3h 48m
Wed 12/237:04 am -
Nonstop1h 58m
Deal found 9/8![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 9/12. 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 10/298:13 am -
1 stop4h 41m
Mon 11/26:44 pm -
1 stop3h 32m
Deal found 9/12![Delta logo]()
$367
This Delta deal was found by Cheapflights users on 9/11. 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 10/138:13 am -
1 stop4h 41m
Fri 10/166:44 pm -
1 stop3h 32m
Deal found 9/11![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 9/11. 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 10/3010:14 am -
1 stop7h 00m
Mon 11/24:19 pm -
1 stop7h 23m
Deal found 9/11![Delta logo]()
$373
Last-minute flights from Dulles Intl to ChicagoDiscover last-minute flight deals from Dulles Intl to Chicago. Data last updated September 13, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Chicago. Data last updated September 13, 2026 and is based on user searches.
This Expedia deal was found by Cheapflights users on 9/8. 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 9/297:50 am -
1 stop11h 33m
Wed 9/301:21 pm -
1 stop15h 59m
Deal found 9/8![Frontier logo]()
$180
This Expedia deal was found by Cheapflights users on 9/8. 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 9/296:00 am -
1 stop24h 38m
Thu 10/110:26 am -
1 stop5h 52m
Deal found 9/8![Frontier logo]()
$199
This Frontier deal was found by Cheapflights users on 9/9. 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.
Wed 9/307:50 am -
1 stop11h 33m
Wed 10/76:20 am -
1 stop9h 58m
Deal found 9/9![Frontier logo]()
$195
This Expedia deal was found by Cheapflights users on 9/9. 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.
Wed 9/307:50 am -
1 stop11h 01m
Sat 10/36:25 am -
1 stop9h 53m
Deal found 9/9![Frontier logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/37:50 am -
1 stop11h 33m
Wed 10/77:28 pm -
1 stop20h 45m
Deal found 9/9![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/37:50 am -
1 stop11h 01m
Sat 10/106:21 am -
1 stop9h 52m
Deal found 9/10![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/49:04 pm -
1 stop13h 16m
Mon 10/267:44 pm -
1 stop20h 28m
Deal found 9/10![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 10/229:06 pm -
1 stop22h 25m
Mon 10/267:44 pm -
1 stop20h 28m
Deal found 9/11![Frontier logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 10/279:06 pm -
1 stop21h 41m
Sat 10/317:25 am -
1 stop8h 47m
Deal found 9/12![Frontier logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/289:06 pm -
1 stop12h 50m
Sun 11/17:50 pm -
1 stop20h 22m
Deal found 9/10![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/297:40 am -
1 stop17h 07m
Sat 10/317:25 am -
1 stop8h 47m
Deal found 9/9![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/317:52 am -
1 stop5h 59m
Mon 11/210:26 am -
1 stop5h 46m
Deal found 9/10![Frontier logo]()
$186
One-way flights from Dulles Intl to ChicagoSearch for one-way flight options from Dulles Intl to Chicago. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.
Search for one-way flight options from Dulles Intl to Chicago. Find affordable one-way fares based on user searches. Data last updated September 13, 2026.
This Super.com deal was found by Cheapflights users on 9/9. 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 9/3011:12 am -
1 stop12h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$95
This Super.com deal was found by Cheapflights users on 9/9. 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 9/307:50 am -
1 stop11h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$95
This Frontier deal was found by Cheapflights users on 9/8. 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 9/297:50 am -
1 stop10h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Frontier logo]()
$96
This Super.com deal was found by Cheapflights users on 9/10. 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 10/312:30 pm -
1 stop8h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$104
This Priceline deal was found by Cheapflights users on 9/10. 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.
Sat 10/1712:30 pm -
1 stop7h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 9/10. 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.
Wed 12/28:46 am -
1 stop5h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$105
This CheapOair deal was found by Cheapflights users on 9/11. 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 10/2412:30 pm -
1 stop7h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$107
This Super.com deal was found by Cheapflights users on 9/9. 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 10/611:12 am -
1 stop12h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 9/11. 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 10/37:50 am -
1 stop11h 01m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 9/9. 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 10/711:12 am -
1 stop12h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$110
This Frontier deal was found by Cheapflights users on 9/10. 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 11/212:15 pm -
1 stop11h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$111
This CheapOair deal was found by Cheapflights users on 9/9. 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.
Tue 10/67:50 am -
1 stop10h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$112
Find flight deals from Dulles Intl to Chicago
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Chicago (CHI). 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 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $178 (Kiwi.com) |
One-way from | $95 (Super.com) |
Popular in | January |
Cheapest in | October |
Average price | $310 |
Good round-trip deal | $343 or less |
Good one-way deal | $258 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl to Chicago 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 13, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Chicago that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - MDW Chicago Midway
IADMDW
Washington, D.C. Dulles Intl
Wed 9/23
7:50 am-5:51 pm
1 stop11h 01m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$116
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - ORD Chicago O'Hare Intl
IADORD
Washington, D.C. Dulles Intl
Wed 12/16
5:40 pm-7:05 pm
Nonstop2h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$160
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - MDW Chicago Midway
IADMDW
Washington, D.C. Dulles Intl
Wed 10/21
6:05 am-9:32 am
1 stop4h 27m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$160
Quickest round-trip
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - ORD Chicago O'Hare Intl
IADORD
Washington, D.C. Dulles Intl
Fri 10/9
10:18 pm-11:32 pm
Nonstop2h 14m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$164
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - ORD Chicago O'Hare Intl
IADORD
Washington, D.C. Dulles Intl
Tue 11/24
11:25 am-4:18 pm
1 stop5h 53m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$170
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - ORD Chicago O'Hare Intl
IADORD
Washington, D.C. Dulles Intl
Tue 12/1
10:10 am-11:33 am
Nonstop2h 23m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$170
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - MDW Chicago Midway
IADMDW
Washington, D.C. Dulles Intl
Tue 11/24
6:00 am-9:42 am
1 stop4h 42m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$170
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - ORD Chicago O'Hare Intl
IADORD
Washington, D.C. Dulles Intl
Mon 10/12
10:18 pm-11:32 pm
Nonstop2h 14m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$174
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - MDW Chicago Midway
IADMDW
Washington, D.C. Dulles Intl
Fri 11/27
6:00 am-11:25 am
1 stop6h 25m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$174
Washington, D.C.Chicago
IAD Washington, D.C. Dulles Intl - ORD Chicago O'Hare Intl
IADORD
Washington, D.C. Dulles Intl
Thu 12/17
8:15 am-9:40 am
Nonstop2h 25m
Chicago O'Hare Intl
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$174
Showing 1-10 of 43 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl to Chicago
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 Dulles Intl to Chicago in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Chicago flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Chicago 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 Washington, D.C. Dulles Intl Airport-Chicago 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 Dulles Intl to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Dulles Intl with our price prediction graph.
IAD-CHI
IAD-MDW
IAD-ORD
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 Washington, D.C. Dulles Intl Airport to Chicago
IAD-CHI
IAD-MDW
IAD-ORD
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Chicago?
Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Chicago (average of $307). Flying from Washington, D.C. Dulles Intl Airport to Chicago in March is currently the most expensive (average of $456). 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 IAD to CHI?
Find hourly flight availability from Dulles Intl to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 13, 2026.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 16% on flights from Washington, D.C. Dulles Intl Airport to Chicago by exploring options for tickets in the evening.
Weekly flight availability from Washington, D.C. Dulles Intl Airport to Chicago
Explore weekly flight availability from Dulles Intl to Chicago. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 13, 2026.
The most flights from IAD to CHI are scheduled on a Saturday (34 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (20 on average).
How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Chicago?
Airfare is typical for this route at the moment.
Washington, D.C. Dulles Intl Airport to Chicago flights typically cost between $177 and $397 in October.The cheapest round-trip price found within the last 5 days was $178 on Frontier (Oct 29-Oct 31).
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Chicago?
Booking 85 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Chicago?
Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Chicago. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Chicago 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.
The best insider tips for Washington, D.C. Dulles Intl Airport to Chicago 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 Washington, D.C. Dulles Intl Airport to Chicago trip
Our travel experts
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated September 13, 2026.
See what other customers who have flown with United Airlines and Frontier from Washington, D.C. Dulles Intl Airport to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Entertainment
7.1
Food
6.7
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Crew
8.1
Entertainment
7.1
Food
6.7
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Crew
8.1
Entertainment
7.1
Food
6.7
Overall
7.4
Comfort
7.3
Boarding
7.7
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Dulles Intl and Chicago flights
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Top 3 airlines flying from Dulles Intl to Chicago
Discover the top 3 airlines that operate flights from Dulles Intl to Chicago. 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 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$90 | Average$240 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$149 | Average$441 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$208 | Average$401 | FlexibilityNo cancel fee | On-time69% |