$70+ Cheap flights from Maryland to Illinois
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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Apr 14 — Apr 211
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Maryland to Illinois 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.Cheap flight deals from Maryland to Illinois
Cheapest
Best
Last-minute
One-way
Cheapest flights from Maryland to IllinoisExplore the most affordable flight options available from Maryland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 15, 2026.
Explore the most affordable flight options available from Maryland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Tue 4/146:08 pm
ORD
- BWI
1 stop16h 11m
Frontier
Deal found 3/10![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 4/2812:17 pm
BWI
- MDW
1 stop8h 14m
Frontier
Tue 5/512:27 pm
MDW
- BWI
1 stop9h 30m
Frontier
Deal found 3/14![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/204:10 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Tue 4/2811:07 am
ORD
- BWI
1 stop12h 37m
Frontier
Deal found 3/13![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/1512:17 pm
BWI
- MDW
1 stop10h 57m
Frontier
Wed 4/222:15 pm
MDW
- BWI
1 stop9h 29m
Frontier
Deal found 3/13![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/146:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Tue 4/2110:45 am
ORD
- BWI
1 stop12h 59m
Frontier
Deal found 3/13![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Tue 4/2110:45 am
ORD
- BWI
1 stop12h 59m
Frontier
Deal found 3/11![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 5/68:52 am
BWI
- ORD
1 stop11h 59m
Multiple Airlines
Fri 5/87:45 pm
ORD
- BWI
1 stop20h 22m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Thu 4/91:19 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/14![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 4/156:00 am
BWI
- ORD
1 stop12h 00m
Multiple Airlines
Sat 4/189:16 am
ORD
- BWI
1 stop6h 42m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Thu 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Mon 4/204:28 pm
ORD
- BWI
1 stop17h 54m
Frontier
Deal found 3/10![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Tue 4/145:49 pm
BWI
- STL
1 stop14h 01m
Frontier
Wed 4/158:23 pm
STL
- BWI
1 stop10h 39m
Frontier
Deal found 3/11![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 4/73:19 pm
BWI
- MDW
1 stop5h 48m
Frontier
Tue 4/142:15 pm
MDW
- BWI
1 stop9h 29m
Frontier
Deal found 3/10![Frontier logo]()
$153
Best flights from Maryland to IllinoisDiscover carefully curated flight deals from Maryland to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 15, 2026.
Discover carefully curated flight deals from Maryland to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 15, 2026.
This Delta deal was found by Cheapflights users on 3/10. 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.
Tue 3/3112:14 pm
IAD
- MDW
1 stop6h 40m
Delta
Tue 4/76:34 pm
MDW
- IAD
1 stop3h 25m
Delta
Deal found 3/10![Delta logo]()
$229
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/244:30 pm
PHL
- MDW
2 stops7h 15m
Southwest
Sun 4/267:40 am
MDW
- PHL
Nonstop1h 55m
Southwest
Deal found 3/10![Southwest logo]()
$232
This United Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 4/16:55 pm
BWI
- ORD
Nonstop2h 18m
United Airlines
Mon 4/66:45 am
ORD
- BWI
Nonstop1h 54m
United Airlines
Deal found 3/10![United Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/189:45 am
PHL
- MDW
1 stop5h 55m
Southwest
Tue 4/212:50 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Deal found 3/10![Southwest logo]()
$237
This Delta deal was found by Cheapflights users on 3/10. 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.
Fri 4/175:19 pm
PHL
- MDW
1 stop6h 09m
Delta
Mon 4/205:21 pm
MDW
- PHL
1 stop6h 38m
Delta
Deal found 3/10![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 3/13. 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 4/206:55 pm
PHL
- ORD
Nonstop2h 28m
United Airlines
Wed 4/229:04 am
ORD
- PHL
Nonstop2h 13m
United Airlines
Deal found 3/13![United Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:00 pm
DCA
- MDW
1 stop7h 20m
Southwest
Thu 5/146:05 am
MDW
- DCA
Nonstop1h 50m
Southwest
Deal found 3/10![Southwest logo]()
$237
This Delta deal was found by Cheapflights users on 3/12. 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.
Tue 4/1412:12 pm
IAD
- MDW
1 stop7h 24m
Delta
Sat 4/186:38 pm
MDW
- IAD
1 stop3h 25m
Delta
Deal found 3/12![Delta logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/14. 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 4/88:20 am
IAD
- ORD
Nonstop2h 18m
United Airlines
Sat 4/114:20 pm
ORD
- IAD
Nonstop2h 03m
United Airlines
Deal found 3/14![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 3/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:55 am
DCA
- MDW
Nonstop2h 05m
Southwest
Tue 4/147:25 pm
MDW
- DCA
Nonstop1h 50m
Southwest
Deal found 3/14![Southwest logo]()
$239
This Delta deal was found by Cheapflights users on 3/10. 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.
Sat 8/14:05 pm
PHL
- ORD
1 stop5h 13m
Delta
Sat 8/86:00 am
ORD
- PHL
1 stop8h 02m
Delta
Deal found 3/10![Delta logo]()
$247
This United Airlines deal was found by Cheapflights users on 3/14. 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 4/910:30 pm
IAD
- ORD
Nonstop2h 13m
United Airlines
Mon 4/136:01 pm
ORD
- IAD
Nonstop2h 03m
United Airlines
Deal found 3/14![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 3/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:15 am
PHL
- ORD
2 stops10h 15m
Southwest
Tue 5/52:40 pm
ORD
- PHL
1 stop6h 20m
Southwest
Deal found 3/14![Southwest logo]()
$242
This Delta deal was found by Cheapflights users on 3/10. 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.
Tue 4/76:00 am
DCA
- MDW
1 stop3h 53m
Delta
Sat 4/116:34 pm
MDW
- DCA
1 stop3h 17m
Delta
Deal found 3/10![Delta logo]()
$257
This United Airlines deal was found by Cheapflights users on 3/14. 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 4/116:00 am
BWI
- ORD
Nonstop2h 21m
United Airlines
Mon 4/136:45 am
ORD
- BWI
Nonstop1h 54m
United Airlines
Deal found 3/14![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 3/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:40 pm
DCA
- MDW
2 stops8h 05m
Southwest
Sat 4/181:05 pm
MDW
- DCA
Nonstop1h 50m
Southwest
Deal found 3/12![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 3/10. 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 4/26:30 am
DCA
- ORD
Nonstop2h 16m
United Airlines
Mon 4/272:00 pm
ORD
- DCA
Nonstop2h 04m
United Airlines
Deal found 3/10![United Airlines logo]()
$265
This Delta deal was found by Cheapflights users on 3/12. 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 4/166:00 am
IAD
- MDW
1 stop3h 47m
Delta
Mon 4/206:38 pm
MDW
- IAD
1 stop3h 25m
Delta
Deal found 3/12![Delta logo]()
$265
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:45 pm
DCA
- MDW
Nonstop2h 05m
Southwest
Mon 4/208:05 pm
MDW
- DCA
Nonstop1h 50m
Southwest
Deal found 3/10![Southwest logo]()
$245
This Delta deal was found by Cheapflights users on 3/10. 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.
Mon 4/205:27 pm
IAD
- MDW
1 stop6h 01m
Delta
Tue 4/2110:41 am
MDW
- IAD
1 stop4h 50m
Delta
Deal found 3/10![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Sat 5/3010:31 am
IAD
- ORD
Nonstop2h 23m
United Airlines
Mon 6/19:40 pm
ORD
- IAD
Nonstop2h 05m
United Airlines
Deal found 3/12![United Airlines logo]()
$268
This Southwest deal was found by Cheapflights users on 3/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/281:00 pm
BWI
- MDW
1 stop5h 00m
Southwest
Mon 6/19:25 pm
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/14![Southwest logo]()
$249
This United Airlines deal was found by Cheapflights users on 3/12. 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 5/18:20 am
IAD
- ORD
Nonstop2h 17m
United Airlines
Sat 5/29:35 pm
ORD
- IAD
Nonstop1h 58m
United Airlines
Deal found 3/12![United Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 3/14. 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 4/149:40 am
DCA
- ORD
1 stop4h 05m
Delta
Tue 4/2110:45 am
ORD
- DCA
1 stop7h 07m
Delta
Deal found 3/14![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 3/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:40 pm
BWI
- MDW
1 stop3h 35m
Southwest
Thu 5/2812:45 pm
MDW
- BWI
1 stop3h 20m
Southwest
Deal found 3/14![Southwest logo]()
$254
This Delta deal was found by Cheapflights users on 3/13. 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 4/306:00 am
IAD
- MDW
1 stop3h 47m
Delta
Sat 5/96:36 pm
MDW
- IAD
1 stop3h 20m
Delta
Deal found 3/13![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/24:15 pm
DCA
- MDW
1 stop5h 05m
Southwest
Mon 4/278:20 am
MDW
- DCA
Nonstop1h 50m
Southwest
Deal found 3/10![Southwest logo]()
$255
This United Airlines deal was found by Cheapflights users on 3/12. 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.
Thu 4/98:20 am
IAD
- STL
1 stop5h 02m
United Airlines
Sat 4/1111:15 am
STL
- IAD
1 stop5h 13m
United Airlines
Deal found 3/12![United Airlines logo]()
$285
This Delta deal was found by Cheapflights users on 3/15. 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.
Tue 4/146:00 am
IAD
- MDW
1 stop3h 47m
Delta
Mon 4/206:38 pm
MDW
- IAD
1 stop3h 25m
Delta
Deal found 3/15![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 3/10. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/94:00 pm
DCA
- MDW
1 stop5h 35m
Southwest
Mon 4/1311:15 am
MDW
- DCA
Nonstop1h 45m
Southwest
Deal found 3/10![Southwest logo]()
$255
Last-minute flights from Maryland to IllinoisDiscover last-minute flight deals from Maryland to Illinois. Data last updated March 15, 2026 and is based on user searches.
Discover last-minute flight deals from Maryland to Illinois. Data last updated March 15, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Tue 4/73:19 pm
BWI
- MDW
1 stop5h 48m
Frontier
Tue 4/142:15 pm
MDW
- BWI
1 stop9h 29m
Frontier
Deal found 3/10![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Tue 4/146:08 pm
ORD
- BWI
1 stop16h 11m
Frontier
Deal found 3/10![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Thu 4/91:19 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/14![Frontier logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/146:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Tue 4/2110:45 am
ORD
- BWI
1 stop12h 59m
Frontier
Deal found 3/13![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 4/146:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Thu 4/1612:42 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/12![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Tue 4/145:49 pm
BWI
- STL
1 stop14h 01m
Frontier
Wed 4/158:23 pm
STL
- BWI
1 stop10h 39m
Frontier
Deal found 3/11![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/1512:17 pm
BWI
- MDW
1 stop10h 57m
Frontier
Wed 4/222:15 pm
MDW
- BWI
1 stop9h 29m
Frontier
Deal found 3/13![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 4/156:00 am
BWI
- ORD
1 stop12h 00m
Multiple Airlines
Sat 4/189:16 am
ORD
- BWI
1 stop6h 42m
Multiple Airlines
Deal found 3/11![Multiple Airlines logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 3/11. 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 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Tue 4/2110:45 am
ORD
- BWI
1 stop12h 59m
Frontier
Deal found 3/11![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Thu 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Mon 4/204:28 pm
ORD
- BWI
1 stop17h 54m
Frontier
Deal found 3/10![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 4/204:10 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Tue 4/2811:07 am
ORD
- BWI
1 stop12h 37m
Frontier
Deal found 3/13![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/14. 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 4/2812:17 pm
BWI
- MDW
1 stop8h 14m
Frontier
Tue 5/512:27 pm
MDW
- BWI
1 stop9h 30m
Frontier
Deal found 3/14![Frontier logo]()
$144
One-way flights from Maryland to IllinoisSearch for one-way flight options from Maryland to Illinois. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
Search for one-way flight options from Maryland to Illinois. Find affordable one-way fares based on user searches. Data last updated March 15, 2026.
This Trip.com deal was found by Cheapflights users on 3/13. 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.
Tue 5/129:25 pm
BWI
- STL
1 stop12h 30m
Frontier
Deal found 3/13![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Tue 4/145:49 pm
BWI
- STL
1 stop14h 01m
Frontier
Deal found 3/11![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 4/133:19 pm
BWI
- MDW
1 stop29h 12m
Frontier
Deal found 3/10![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/10. 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.
Mon 4/208:44 pm
BWI
- ORD
1 stop13h 56m
Frontier
Deal found 3/10![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 3/15. 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.
Sat 4/1812:18 pm
BWI
- MDW
1 stop7h 19m
Frontier
Deal found 3/15![Frontier logo]()
$81
This Cheapflightsfares deal was found by Cheapflights users on 3/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/2410:09 am
BWI
- ORD
1 stop10h 54m
Spirit Airlines
Deal found 3/12![Spirit Airlines logo]()
$81
This Super.com deal was found by Cheapflights users on 3/11. 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.
Wed 4/88:18 am
PHL
- ORD
1 stop9h 57m
Spirit Airlines
Deal found 3/11![Spirit Airlines logo]()
$83
This Super.com deal was found by Cheapflights users on 3/14. 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.
Mon 4/133:44 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Deal found 3/14![Frontier logo]()
$83
This Cheapflightsfares deal was found by Cheapflights users on 3/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:12 pm
PHL
- ORD
1 stop7h 12m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 5/99:48 pm
BWI
- MDW
1 stop14h 24m
Frontier
Deal found 3/13![Frontier logo]()
$85
This eDestinos deal was found by Cheapflights users on 3/12. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/59:25 pm
BWI
- MDW
1 stop14h 44m
Frontier
Deal found 3/12![Frontier logo]()
$86
This Cheapflightsfares deal was found by Cheapflights users on 3/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:19 am
BWI
- ORD
1 stop7h 56m
Spirit Airlines
Deal found 3/10![Spirit Airlines logo]()
$86
Find flight deals from Maryland to Illinois
Keep the following information in mind while searching for Maryland to Illinois flight deals. Data was last updated March 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $142 (Kiwi.com) |
One-way from | $70 (Trip.com) |
Popular in | March |
Cheapest in | September |
Average price | $309 |
Good round-trip deal | $270 or less |
Good one-way deal | $158 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Maryland to Illinois 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 2,558,603 searches. Data last updated March 15, 2026.
Use the filters below to find and compare flights from Maryland to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Chicago
IAD - MDW
IADMDW
Washington, D.C. Dulles Intl
Tue 3/31
12:14 pm-5:54 pm
1 stop6h 40m
Chicago Midway
Tue 4/7
6:34 pm-10:59 pm
1 stop3h 25m
$229
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Fri 4/24
4:30 pm-10:45 pm
2 stops7h 15m
Chicago Midway
Sun 4/26
7:40 am-10:35 am
Nonstop1h 55m
$232
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Wed 4/1
6:55 pm-8:13 pm
Nonstop2h 18m
Chicago O'Hare Intl
Mon 4/6
6:45 am-9:39 am
Nonstop1h 54m
$237
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Sat 4/18
9:45 am-2:40 pm
1 stop5h 55m
Chicago Midway
Tue 4/21
2:50 pm-5:50 pm
Nonstop2h 00m
$237
PhiladelphiaChicago
PHL - MDW
PHLMDW
Philadelphia
Fri 4/17
5:19 pm-10:28 pm
1 stop6h 09m
Chicago Midway
Mon 4/20
5:21 pm-12:59 am
1 stop6h 38m
$237
Washington, D.C.Chicago
DCA - MDW
DCAMDW
Washington, D.C. Reagan-National
Tue 5/12
2:00 pm-8:20 pm
1 stop7h 20m
Chicago Midway
Thu 5/14
6:05 am-8:55 am
Nonstop1h 50m
$237
Quickest round-trip
Washington, D.C.Chicago
DCA - MDW
DCAMDW
Washington, D.C. Reagan-National
Tue 4/7
7:55 am-9:00 am
Nonstop2h 05m
Chicago Midway
Tue 4/14
7:25 pm-10:15 pm
Nonstop1h 50m
$239
PhiladelphiaChicago
PHL - ORD
PHLORD
Philadelphia
Sat 5/2
6:15 am-3:30 pm
2 stops10h 15m
Chicago O'Hare Intl
Tue 5/5
2:40 pm-10:00 pm
1 stop6h 20m
$242
Washington, D.C.Chicago
DCA - MDW
DCAMDW
Washington, D.C. Reagan-National
Tue 4/14
2:40 pm-9:45 pm
2 stops8h 05m
Chicago Midway
Sat 4/18
1:05 pm-3:55 pm
Nonstop1h 50m
$242
Washington, D.C.Chicago
DCA - MDW
DCAMDW
Washington, D.C. Reagan-National
Thu 4/16
7:45 pm-8:50 pm
Nonstop2h 05m
Chicago Midway
Mon 4/20
8:05 pm-10:55 pm
Nonstop1h 50m
$245
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Maryland to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Maryland with our price prediction graph.
BWI-STL
IAD-ORD
PHL-MDW
IAD-STL
IAD-MDW
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 Maryland to Illinois
USMD-USIL
BWI-STL
IAD-ORD
PHL-MDW
IAD-STL
What is the cheapest month to book a flight from Maryland to Illinois?
Currently, January is the cheapest month in which you can book a flight from Maryland to Illinois (average of $57). Flying from Maryland to Illinois in June is currently the most expensive (average of $134). 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 MD to IL?
Find hourly flight availability from Maryland to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 15, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 37% on flights from Maryland to Illinois by exploring options for tickets in the evening.
What is the cheapest day to fly from Maryland to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Maryland to Illinois. Price data was last updated on March 14, 2026.
Travelers seeking maximum savings on their Maryland to Illinois flight should consider departing on Friday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Maryland to Illinois
Explore weekly flight availability from Maryland to Illinois. 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 March 15, 2026.
The most flights from USMD to USIL are scheduled on a Friday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (3 on average).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated March 15, 2026.
Read through reviews of airlines operating flights from Maryland to Illinois, such as Southwest,United Airlines, andAmerican Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from Maryland to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Maryland to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Maryland to Illinois by cabin class
Find flights from Maryland to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Maryland and Illinois flights
Browse other Maryland and Illinois flight options. Last updated on March 15, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Maryland after your stay in Illinois
Maryland to Illinois flights
Consider these flights traveling from Maryland to Illinois.
Top 6 airlines flying from Maryland to Illinois
Discover the top 6 airlines that operate flights from Maryland to Illinois. 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 2,558,603 searches. Data last updated March 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$41 | Average$114 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$57 | Average$165 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$131 | Average$317 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$139 | Average$287 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$158 | Average$408 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$486 | FlexibilityNo cancel fee | On-timeN/A |