$60+ Cheap flights from Illinois to Maryland
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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
Aug 21 — Aug 281
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Maryland with Cheapflights
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Cheapest flights from Illinois to MarylandExplore the most affordable flight options available from Illinois to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.
Explore the most affordable flight options available from Illinois to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:35 am
STL
- BWI
1 stop6h 59m
Frontier
Mon 10/129:29 pm
BWI
- STL
1 stop13h 11m
Frontier
Deal found 7/19![Frontier logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:35 am
STL
- BWI
1 stop7h 01m
Frontier
Sun 9/139:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 7/19![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:35 am
STL
- BWI
1 stop7h 01m
Frontier
Sat 9/269:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 7/20![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:35 am
STL
- BWI
1 stop20h 54m
Frontier
Sat 9/267:31 pm
BWI
- STL
1 stop15h 09m
Frontier
Deal found 7/18![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Sun 8/239:32 pm
BWI
- STL
1 stop20h 50m
Frontier
Deal found 7/19![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:35 am
STL
- BWI
1 stop7h 01m
Frontier
Sun 10/49:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 7/20![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1410:35 am
STL
- BWI
1 stop7h 01m
Frontier
Tue 9/159:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 7/21![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1110:35 am
STL
- BWI
1 stop7h 01m
Frontier
Mon 9/149:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 7/21![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2210:35 am
STL
- BWI
1 stop6h 59m
Frontier
Mon 10/269:29 pm
BWI
- STL
1 stop13h 11m
Frontier
Deal found 7/21![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Sun 8/96:35 am
BWI
- STL
1 stop27h 22m
Frontier
Deal found 7/18![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:57 pm
STL
- BWI
1 stop18h 27m
Frontier
Mon 8/246:45 am
BWI
- STL
1 stop11h 37m
Frontier
Deal found 7/20![Frontier logo]()
$145
This Frontier deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:03 pm
ORD
- BWI
Nonstop2h 10m
Frontier
Mon 8/319:32 pm
BWI
- ORD
1 stop11h 21m
Frontier
Deal found 7/22![Frontier logo]()
$183
Best flights from Illinois to MarylandDiscover carefully curated flight deals from Illinois to Maryland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 22, 2026.
Discover carefully curated flight deals from Illinois to Maryland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 22, 2026.
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:50 pm
MDW
- BWI
1 stop3h 15m
Southwest
Mon 10/199:00 pm
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 7/21![Southwest logo]()
$193
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/35:30 am
ORD
- BWI
1 stop4h 38m
Delta
Tue 11/105:30 pm
BWI
- ORD
1 stop3h 54m
Delta
Deal found 7/22![Delta logo]()
$207
This JetBlue deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:38 am
ORD
- DCA
1 stop5h 27m
JetBlue
Sat 10/246:30 am
DCA
- ORD
1 stop6h 17m
JetBlue
Deal found 7/18![JetBlue logo]()
$220
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:00 am
ORD
- DCA
Nonstop2h 04m
United Airlines
Mon 9/141:04 pm
DCA
- ORD
Nonstop2h 16m
United Airlines
Deal found 7/17![United Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:55 am
MDW
- BWI
1 stop4h 30m
Southwest
Mon 10/1211:00 am
BWI
- MDW
1 stop3h 25m
Southwest
Deal found 7/21![Southwest logo]()
$202
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:05 am
ORD
- BWI
1 stop3h 40m
Delta
Tue 9/155:40 pm
BWI
- ORD
1 stop3h 50m
Delta
Deal found 7/22![Delta logo]()
$207
This JetBlue deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/39:38 am
ORD
- DCA
1 stop5h 39m
JetBlue
Wed 10/76:30 am
DCA
- ORD
1 stop6h 17m
JetBlue
Deal found 7/19![JetBlue logo]()
$220
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/91:51 pm
ORD
- BWI
1 stop4h 52m
Delta
Fri 9/115:10 pm
BWI
- ORD
1 stop7h 49m
Delta
Deal found 7/22![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:45 am
MDW
- BWI
1 stop3h 15m
Southwest
Sat 9/198:30 am
BWI
- MDW
2 stops6h 40m
Southwest
Deal found 7/21![Southwest logo]()
$227
This Delta deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:24 pm
ORD
- BWI
1 stop4h 40m
Delta
Wed 10/144:39 pm
BWI
- ORD
1 stop5h 21m
Delta
Deal found 7/22![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:45 pm
ORD
- BWI
Nonstop2h 07m
United Airlines
Thu 9/245:29 pm
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 7/19![United Airlines logo]()
$251
This JetBlue deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:38 am
ORD
- PHL
1 stop7h 26m
JetBlue
Thu 9/1710:45 am
PHL
- ORD
1 stop9h 37m
JetBlue
Deal found 7/19![JetBlue logo]()
$229
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:59 am
ORD
- DCA
1 stop3h 29m
Delta
Mon 8/1712:23 pm
DCA
- ORD
1 stop7h 06m
Delta
Deal found 7/21![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:29 pm
ORD
- BWI
Nonstop2h 14m
United Airlines
Thu 9/247:05 pm
BWI
- ORD
Nonstop2h 19m
United Airlines
Deal found 7/17![United Airlines logo]()
$251
This JetBlue deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/211:01 am
ORD
- PHL
1 stop8h 00m
JetBlue
Wed 9/910:45 am
PHL
- ORD
1 stop9h 37m
JetBlue
Deal found 7/19![JetBlue logo]()
$229
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:00 am
MDW
- DCA
Nonstop1h 45m
Southwest
Wed 9/29:35 am
DCA
- MDW
Nonstop1h 55m
Southwest
Deal found 7/20![Southwest logo]()
$245
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:55 pm
ORD
- DCA
1 stop3h 42m
Delta
Mon 9/287:40 pm
DCA
- ORD
1 stop5h 19m
Delta
Deal found 7/21![Delta logo]()
$207
This JetBlue deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/129:38 am
ORD
- PHL
1 stop7h 26m
JetBlue
Mon 9/1410:45 am
PHL
- ORD
1 stop9h 37m
JetBlue
Deal found 7/19![JetBlue logo]()
$229
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:30 am
ORD
- PHL
Nonstop2h 08m
United Airlines
Mon 9/76:25 am
PHL
- ORD
Nonstop2h 25m
United Airlines
Deal found 7/21![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:10 am
MDW
- DCA
Nonstop1h 45m
Southwest
Thu 8/139:15 pm
DCA
- MDW
Nonstop1h 55m
Southwest
Deal found 7/20![Southwest logo]()
$245
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:22 am
ORD
- DCA
1 stop6h 23m
Delta
Wed 8/261:30 pm
DCA
- ORD
1 stop8h 19m
Delta
Deal found 7/21![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/192:30 pm
ORD
- PHL
Nonstop2h 24m
United Airlines
Wed 8/268:20 am
PHL
- ORD
Nonstop2h 25m
United Airlines
Deal found 7/21![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:05 am
ORD
- IAD
1 stop7h 37m
Delta
Mon 8/2412:30 pm
IAD
- ORD
1 stop7h 19m
Delta
Deal found 7/21![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/225:55 am
MDW
- BWI
Nonstop1h 45m
Southwest
Wed 8/267:45 pm
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 7/20![Southwest logo]()
$251
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:45 pm
ORD
- BWI
Nonstop2h 14m
United Airlines
Wed 10/712:10 pm
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 7/20![United Airlines logo]()
$257
This JetBlue deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/311:01 am
ORD
- DCA
1 stop7h 08m
JetBlue
Mon 9/711:00 am
DCA
- ORD
1 stop9h 25m
JetBlue
Deal found 7/19![JetBlue logo]()
$258
This Southwest deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:25 am
MDW
- BWI
Nonstop1h 45m
Southwest
Wed 10/216:25 pm
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 7/17![Southwest logo]()
$251
This United Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/510:50 am
ORD
- IAD
Nonstop2h 05m
United Airlines
Wed 9/93:15 pm
IAD
- ORD
Nonstop2h 14m
United Airlines
Deal found 7/20![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:45 am
MDW
- BWI
1 stop3h 15m
Southwest
Sat 8/229:40 am
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 7/18![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/231:15 pm
ORD
- BWI
1 stop4h 31m
Delta
Wed 12/26:00 am
BWI
- ORD
1 stop5h 33m
Delta
Deal found 7/17![Delta logo]()
$234
Last-minute flights from Illinois to MarylandDiscover last-minute flight deals from Illinois to Maryland. Data last updated July 22, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Maryland. Data last updated July 22, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/54:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Sun 8/96:35 am
BWI
- STL
1 stop27h 22m
Frontier
Deal found 7/18![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/84:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Sun 8/169:32 pm
BWI
- STL
1 stop12h 25m
Frontier
Deal found 7/19![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/96:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Thu 8/136:35 am
BWI
- STL
1 stop12h 02m
Frontier
Deal found 7/19![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/104:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Thu 8/139:32 pm
BWI
- STL
1 stop12h 25m
Frontier
Deal found 7/18![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:05 am
ORD
- PHL
1 stop23h 10m
Frontier
Sat 8/224:45 pm
PHL
- ORD
1 stop16h 08m
Frontier
Deal found 7/17![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/154:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Sat 8/229:37 pm
BWI
- STL
1 stop20h 45m
Frontier
Deal found 7/19![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Sun 8/239:32 pm
BWI
- STL
1 stop20h 50m
Frontier
Deal found 7/19![Frontier logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/174:57 pm
STL
- BWI
1 stop18h 27m
Frontier
Mon 8/246:45 am
BWI
- STL
1 stop11h 37m
Frontier
Deal found 7/20![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:17 pm
STL
- BWI
1 stop17h 07m
Frontier
Mon 8/248:45 am
BWI
- STL
1 stop9h 37m
Frontier
Deal found 7/21![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Thu 8/278:45 am
BWI
- STL
1 stop9h 37m
Frontier
Deal found 7/19![Frontier logo]()
$121
This Kiwi.com deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Mon 8/318:45 am
BWI
- STL
1 stop9h 37m
Frontier
Deal found 7/20![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 7/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:03 pm
ORD
- BWI
Nonstop2h 10m
Frontier
Mon 8/319:32 pm
BWI
- ORD
1 stop11h 21m
Frontier
Deal found 7/22![Frontier logo]()
$183
One-way flights from Illinois to MarylandSearch for one-way flight options from Illinois to Maryland. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
Search for one-way flight options from Illinois to Maryland. Find affordable one-way fares based on user searches. Data last updated July 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 7/18![Frontier logo]()
$60
This Trip.com deal was found by Cheapflights users on 7/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:35 am
STL
- BWI
1 stop12h 36m
Frontier
Deal found 7/18![Frontier logo]()
$61
This Trip.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:35 am
STL
- IAD
1 stop12h 53m
Frontier
Deal found 7/17![Frontier logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1910:35 am
STL
- BWI
1 stop21h 22m
Frontier
Deal found 7/19![Frontier logo]()
$62
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:35 am
STL
- BWI
1 stop20h 54m
Frontier
Deal found 7/19![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:35 am
STL
- BWI
1 stop20h 54m
Frontier
Deal found 7/21![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Deal found 7/17![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 7/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:17 pm
STL
- BWI
1 stop28h 27m
Frontier
Deal found 7/19![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1910:35 am
STL
- BWI
1 stop12h 36m
Frontier
Deal found 7/21![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/144:57 pm
STL
- IAD
1 stop22h 37m
Frontier
Deal found 7/17![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 7/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/74:57 pm
STL
- IAD
1 stop22h 37m
Frontier
Deal found 7/17![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:34 pm
STL
- IAD
1 stop21h 40m
Frontier
Deal found 7/21![Frontier logo]()
$75
Find flight deals from Illinois to Maryland
Keep the following information in mind while searching for Illinois to Maryland flight deals. Data was last updated July 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $118 (Kiwi.com) |
One-way from | $60 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $330 |
Good round-trip deal | $271 or less |
Good one-way deal | $188 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Maryland 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 July 22, 2026.
Use the filters below to find and compare flights from Illinois to Maryland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Thu 10/15
2:50 pm-7:05 pm
1 stop3h 15m
Baltimore/Washington
Mon 10/19
9:00 pm-10:00 pm
Nonstop2h 00m
$193
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Thu 10/8
7:55 am-1:25 pm
1 stop4h 30m
Baltimore/Washington
Mon 10/12
11:00 am-1:25 pm
1 stop3h 25m
$202
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Tue 11/3
5:30 am-11:08 am
1 stop4h 38m
Baltimore/Washington
Tue 11/10
5:30 pm-8:24 pm
1 stop3h 54m
$207
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Sat 9/12
7:05 am-11:45 am
1 stop3h 40m
Baltimore/Washington
Tue 9/15
5:40 pm-8:30 pm
1 stop3h 50m
$207
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Wed 9/9
1:51 pm-7:43 pm
1 stop4h 52m
Baltimore/Washington
Fri 9/11
5:10 pm-11:59 pm
1 stop7h 49m
$207
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Tue 10/13
5:24 pm-11:04 pm
1 stop4h 40m
Baltimore/Washington
Wed 10/14
4:39 pm-9:00 pm
1 stop5h 21m
$207
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Thu 8/13
6:59 am-11:28 am
1 stop3h 29m
Washington, D.C. Reagan-National
Mon 8/17
12:23 pm-6:29 pm
1 stop7h 06m
$207
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Thu 9/24
1:55 pm-6:37 pm
1 stop3h 42m
Washington, D.C. Reagan-National
Mon 9/28
7:40 pm-11:59 pm
1 stop5h 19m
$207
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Wed 8/19
11:22 am-6:45 pm
1 stop6h 23m
Washington, D.C. Reagan-National
Wed 8/26
1:30 pm-8:49 pm
1 stop8h 19m
$207
ChicagoWashington, D.C.
ORD - IAD
ORDIAD
Chicago O'Hare Intl
Thu 8/20
8:05 am-4:42 pm
1 stop7h 37m
Washington, D.C. Dulles Intl
Mon 8/24
12:30 pm-6:49 pm
1 stop7h 19m
$207
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Maryland
Have a flexible travel schedule? Discover the best time to fly to Maryland from Illinois with our price prediction graph.
MDW-DCA
MDW-IAD
ORD-PHL
STL-BWI
ORD-DCA
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 Illinois to Maryland
USIL-USMD
MDW-DCA
MDW-IAD
ORD-PHL
STL-BWI
What is the cheapest month to book a flight from Illinois to Maryland?
Currently, September is the cheapest month in which you can book a flight from Illinois to Maryland (average of $177). Flying from Illinois to Maryland in June is currently the most expensive (average of $357). 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 IL to MD?
Find hourly flight availability from Illinois to Maryland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 22, 2026.
It’s typically best to fly out from Illinois to Maryland at noon. Doing so could potentially save you 28% on the flight price compared to flying in the evening, which is usually more expensive.
Weekly flight availability from Illinois to Maryland
Explore weekly flight availability from Illinois to Maryland. 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 July 22, 2026.
The most flights from USIL to USMD are scheduled on a Monday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Illinois to Maryland?
How far ahead should I book a flight from Illinois to Maryland?
To ensure you get the cheapest price possible for a flight from Illinois to Maryland, you should look to book at least 73 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from Illinois to Maryland?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Maryland. Price data was last updated on July 18, 2026.
Travelers seeking maximum savings on their Illinois to Maryland flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Maryland
Get insights into the airlines that provide service to Maryland. 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 Maryland. Reviews last updated July 22, 2026.
Read through reviews of airlines operating flights from Illinois to Maryland, such as Southwest,Delta, andUnited 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
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Related info for your journey
Find useful and relevant information for your journey from Illinois to Maryland. 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.
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Alternative routes for Illinois to Maryland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Maryland by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Maryland by cabin class
Find flights from Illinois to Maryland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Maryland flights
Browse other Illinois and Maryland flight options. Last updated on July 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Maryland
Find the right flight back to Illinois after your stay in Maryland
Illinois to Maryland flights
Consider these flights traveling from Illinois to Maryland.
Top 5 airlines flying from Illinois to Maryland
Discover the top 5 airlines that operate flights from Illinois to Maryland. 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 July 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$165 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$149 | Average$361 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$279 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$177 | Average$343 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$293 | Average$356 | FlexibilityNo cancel fee | On-timeN/A |