$64+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
sept. 2 — sept. 91
Round-trip
1 adult, Economy
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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 août 3, 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 août 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
lun. 9/146:00 am
BWI
- STL
1 stop8h 10m
Frontier
lun. 9/212:29 pm
STL
- BWI
1 stop17h 56m
Frontier
Deal found 7/31![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/209:29 pm
BWI
- STL
1 stop13h 11m
Frontier
lun. 10/2610:35 am
STL
- BWI
1 stop6h 59m
Frontier
Deal found 7/30![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
jeu. 9/36:45 am
BWI
- STL
1 stop11h 37m
Frontier
lun. 9/76:17 pm
STL
- BWI
1 stop22h 26m
Frontier
Deal found 8/1![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/276:45 am
BWI
- STL
1 stop11h 37m
Frontier
jeu. 9/36:17 pm
STL
- BWI
1 stop17h 07m
Frontier
Deal found 7/30![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/199:32 pm
BWI
- STL
1 stop20h 50m
Frontier
lun. 8/246:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 7/30![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/206:45 am
BWI
- STL
1 stop11h 37m
Frontier
lun. 8/246:17 pm
STL
- BWI
1 stop17h 07m
Frontier
Deal found 7/30![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
ven. 9/48:45 am
BWI
- STL
1 stop9h 37m
Frontier
lun. 9/76:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 8/2![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
ven. 9/116:00 am
BWI
- STL
1 stop8h 10m
Frontier
lun. 9/142:29 pm
STL
- BWI
1 stop17h 56m
Frontier
Deal found 8/1![Frontier logo]()
$154
This Frontier deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
mer. 9/912:40 pm
PHL
- ORD
1 stop6h 43m
Frontier
lun. 9/147:25 am
ORD
- PHL
Nonstop2h 24m
Frontier
Deal found 8/2![Frontier logo]()
$175
This Frontier deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
jeu. 10/111:54 am
PHL
- ORD
Nonstop2h 36m
Frontier
ven. 10/27:25 am
ORD
- PHL
Nonstop2h 24m
Frontier
Deal found 8/2![Frontier logo]()
$176
This Frontier deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
mer. 9/912:40 pm
PHL
- ORD
1 stop6h 43m
Frontier
dim. 9/137:25 am
ORD
- PHL
Nonstop2h 24m
Frontier
Deal found 8/2![Frontier logo]()
$177
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 8/291:00 pm
PHL
- ORD
1 stop11h 08m
Frontier
mer. 9/28:05 am
ORD
- PHL
1 stop13h 54m
Frontier
Deal found 7/30![Frontier logo]()
$178
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 août 3, 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 août 3, 2026.
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/246:00 am
IAD
- MDW
1 stop4h 59m
Delta
jeu. 8/276:42 pm
MDW
- IAD
1 stop3h 44m
Delta
Deal found 7/30![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 8/226:05 am
BWI
- ORD
Nonstop2h 20m
United Airlines
sam. 8/226:15 pm
ORD
- BWI
Nonstop2h 14m
United Airlines
Deal found 7/29![United Airlines logo]()
$201
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 9/22:10 pm
DCA
- MDW
1 stop6h 05m
Southwest
sam. 9/510:05 am
MDW
- DCA
2 stops9h 45m
Southwest
Deal found 7/30![Southwest logo]()
$202
This JetBlue deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/241:25 pm
DCA
- ORD
1 stop7h 02m
JetBlue
mer. 8/2611:01 am
ORD
- DCA
1 stop6h 00m
JetBlue
Deal found 7/29![JetBlue logo]()
$251
This KAYAK deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/142:54 pm
DCA
- ORD
Nonstop2h 24m
American Airlines
jeu. 9/178:05 am
ORD
- DCA
1 stop7h 02m
American Airlines
Deal found 7/30![American Airlines logo]()
$306
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/156:05 am
IAD
- MDW
1 stop4h 12m
Delta
lun. 10/196:44 pm
MDW
- IAD
1 stop3h 32m
Delta
Deal found 7/30![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
ven. 9/118:30 am
DCA
- ORD
Nonstop2h 15m
United Airlines
lun. 9/142:00 pm
ORD
- DCA
Nonstop2h 08m
United Airlines
Deal found 8/1![United Airlines logo]()
$216
This Sun Country Air deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 11/2510:36 am
PHL
- ORD
1 stop22h 44m
Sun Country Air
dim. 11/299:18 am
ORD
- PHL
1 stop25h 43m
Sun Country Air
Deal found 8/2![Sun Country Air logo]()
$435
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
sam. 9/51:10 pm
IAD
- ORD
Nonstop2h 17m
United Airlines
mer. 9/910:50 am
ORD
- IAD
Nonstop2h 05m
United Airlines
Deal found 8/2![United Airlines logo]()
$216
This Southwest deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
ven. 9/116:50 pm
DCA
- MDW
1 stop4h 10m
Southwest
sam. 9/127:55 am
MDW
- DCA
2 stops8h 00m
Southwest
Deal found 7/31![Southwest logo]()
$241
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
sam. 9/56:10 am
IAD
- MDW
1 stop4h 07m
Delta
mer. 9/96:05 am
MDW
- IAD
1 stop4h 25m
Delta
Deal found 8/2![Delta logo]()
$236
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/285:20 pm
BWI
- MDW
Nonstop1h 55m
Southwest
lun. 8/319:00 am
MDW
- BWI
Nonstop1h 55m
Southwest
Deal found 7/30![Southwest logo]()
$249
This JetBlue deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
mar. 11/312:10 pm
DCA
- ORD
1 stop8h 02m
JetBlue
sam. 11/72:15 pm
ORD
- DCA
1 stop5h 28m
JetBlue
Deal found 7/31![JetBlue logo]()
$285
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/146:10 am
BWI
- ORD
1 stop5h 20m
Delta
jeu. 10/225:29 pm
ORD
- BWI
1 stop4h 35m
Delta
Deal found 7/29![Delta logo]()
$238
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/48:00 pm
BWI
- MDW
Nonstop2h 00m
Southwest
sam. 9/59:05 am
MDW
- BWI
1 stop3h 45m
Southwest
Deal found 7/30![Southwest logo]()
$254
This United Airlines deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
jeu. 8/276:15 am
IAD
- ORD
Nonstop2h 15m
United Airlines
sam. 8/299:39 pm
ORD
- IAD
Nonstop2h 05m
United Airlines
Deal found 8/2![United Airlines logo]()
$255
This KAYAK deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/146:16 pm
BWI
- ORD
Nonstop2h 47m
American Airlines
jeu. 9/178:05 am
ORD
- BWI
1 stop4h 52m
American Airlines
Deal found 7/30![American Airlines logo]()
$334
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/285:05 pm
DCA
- MDW
1 stop6h 35m
Southwest
sam. 8/295:10 pm
MDW
- DCA
Nonstop1h 55m
Southwest
Deal found 7/29![Southwest logo]()
$255
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/1510:30 am
DCA
- ORD
Nonstop2h 16m
United Airlines
mar. 10/203:00 pm
ORD
- DCA
Nonstop2h 09m
United Airlines
Deal found 7/29![United Airlines logo]()
$257
This JetBlue deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/1211:00 am
DCA
- ORD
1 stop9h 27m
JetBlue
sam. 8/151:55 pm
ORD
- DCA
1 stop6h 39m
JetBlue
Deal found 7/29![JetBlue logo]()
$311
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
jeu. 10/159:32 am
DCA
- ORD
1 stop4h 27m
Delta
lun. 10/195:29 pm
ORD
- DCA
1 stop4h 38m
Delta
Deal found 8/1![Delta logo]()
$275
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/1410:18 pm
IAD
- ORD
Nonstop2h 14m
United Airlines
lun. 10/198:50 am
ORD
- IAD
Nonstop2h 05m
United Airlines
Deal found 7/29![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/148:00 pm
BWI
- MDW
Nonstop2h 00m
Southwest
jeu. 9/177:30 am
MDW
- BWI
Nonstop1h 45m
Southwest
Deal found 7/30![Southwest logo]()
$257
This Delta deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
mar. 9/154:00 pm
DCA
- ORD
1 stop5h 56m
Delta
jeu. 9/175:10 pm
ORD
- DCA
1 stop4h 52m
Delta
Deal found 7/31![Delta logo]()
$275
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 8/2910:27 pm
IAD
- ORD
Nonstop2h 13m
United Airlines
mar. 9/89:39 pm
ORD
- IAD
Nonstop2h 05m
United Airlines
Deal found 7/30![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/46:50 pm
DCA
- MDW
1 stop4h 10m
Southwest
dim. 9/68:10 am
MDW
- DCA
Nonstop2h 00m
Southwest
Deal found 7/29![Southwest logo]()
$260
This Delta deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
sam. 8/295:47 pm
IAD
- MDW
1 stop5h 49m
Delta
lun. 8/315:45 pm
MDW
- IAD
1 stop4h 41m
Delta
Deal found 8/1![Delta logo]()
$275
This Southwest deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
jeu. 9/101:10 pm
BWI
- MDW
Nonstop1h 55m
Southwest
sam. 9/121:55 pm
MDW
- BWI
Nonstop1h 55m
Southwest
Deal found 8/1![Southwest logo]()
$261
This United Airlines deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
mer. 9/235:35 pm
BWI
- ORD
Nonstop2h 20m
United Airlines
jeu. 9/247:30 am
ORD
- BWI
Nonstop2h 00m
United Airlines
Deal found 8/1![United Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
sam. 8/296:10 am
IAD
- MDW
1 stop4h 07m
Delta
sam. 8/296:42 pm
MDW
- IAD
1 stop3h 44m
Delta
Deal found 8/2![Delta logo]()
$275
Last-minute flights from Maryland to IllinoisDiscover last-minute flight deals from Maryland to Illinois. Data last updated août 3, 2026 and is based on user searches.
Discover last-minute flight deals from Maryland to Illinois. Data last updated août 3, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/199:32 pm
BWI
- STL
1 stop20h 50m
Frontier
lun. 8/246:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 7/30![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/199:32 pm
BWI
- STL
1 stop20h 50m
Frontier
ven. 8/216:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 7/29![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
mer. 8/196:20 am
IAD
- ORD
1 stop14h 48m
Frontier
mar. 8/259:20 am
ORD
- IAD
1 stop8h 09m
Frontier
Deal found 8/2![Frontier logo]()
$193
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/206:45 am
BWI
- STL
1 stop11h 37m
Frontier
lun. 8/246:17 pm
STL
- BWI
1 stop17h 07m
Frontier
Deal found 7/30![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/218:45 am
BWI
- STL
1 stop9h 37m
Frontier
lun. 8/246:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 7/29![Frontier logo]()
$157
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 8/222:45 pm
PHL
- MDW
1 stop9h 02m
Frontier
lun. 8/2411:50 am
MDW
- PHL
1 stop9h 43m
Frontier
Deal found 7/30![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/276:45 am
BWI
- STL
1 stop11h 37m
Frontier
jeu. 9/36:17 pm
STL
- BWI
1 stop17h 07m
Frontier
Deal found 7/30![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/278:45 am
BWI
- STL
1 stop9h 37m
Frontier
dim. 8/306:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 7/29![Frontier logo]()
$149
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 8/274:45 pm
PHL
- MDW
1 stop7h 02m
Frontier
jeu. 9/311:50 am
MDW
- PHL
1 stop9h 43m
Frontier
Deal found 7/30![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 8/288:45 am
BWI
- STL
1 stop9h 37m
Frontier
ven. 9/46:17 pm
STL
- BWI
1 stop17h 07m
Frontier
Deal found 7/30![Frontier logo]()
$159
This Priceline deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 8/294:45 pm
PHL
- MDW
1 stop7h 02m
Frontier
mer. 9/211:50 am
MDW
- PHL
1 stop9h 43m
Frontier
Deal found 7/30![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
lun. 8/318:45 am
BWI
- STL
1 stop9h 37m
Frontier
lun. 9/76:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Deal found 8/2![Frontier logo]()
$139
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 août 3, 2026.
Search for one-way flight options from Maryland to Illinois. Find affordable one-way fares based on user searches. Data last updated août 3, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
dim. 8/308:39 pm
IAD
- STL
1 stop21h 43m
Frontier
Deal found 8/1![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
lun. 9/147:50 am
IAD
- STL
1 stop6h 20m
Frontier
Deal found 8/2![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
jeu. 9/36:20 am
IAD
- STL
1 stop12h 02m
Frontier
Deal found 7/31![Frontier logo]()
$71
This Trip.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 10/189:52 am
BWI
- STL
1 stop24h 48m
Frontier
Deal found 7/29![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
lun. 8/318:45 am
BWI
- STL
1 stop9h 37m
Frontier
Deal found 7/31![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 8/309:32 pm
BWI
- STL
1 stop20h 50m
Frontier
Deal found 7/30![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/257:50 am
IAD
- STL
1 stop6h 20m
Frontier
Deal found 7/30![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/19:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 7/30![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” 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.
sam. 9/58:39 pm
IAD
- STL
1 stop21h 43m
Frontier
Deal found 8/1![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/249:25 pm
BWI
- STL
1 stop16h 45m
Frontier
Deal found 7/29![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 8/2. Clicking the “Pick Dates” 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.
mer. 8/268:39 pm
IAD
- STL
1 stop21h 43m
Frontier
Deal found 8/2![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” 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.
sam. 10/317:31 pm
BWI
- STL
1 stop16h 09m
Frontier
Deal found 7/31![Frontier logo]()
$77
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 août 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $141 (Kiwi.com) |
One-way from | $64 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $266 |
Good round-trip deal | $313 or less |
Good one-way deal | $188 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 août 3, 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
lun. 8/24
6:00 am-9:59 am
1 stop4h 59m
Chicago Midway
jeu. 8/27
6:42 pm-11:26 pm
1 stop3h 44m
$197
Washington, D.C.Chicago
IAD - MDW
IADMDW
Washington, D.C. Dulles Intl
jeu. 10/15
6:05 am-9:17 am
1 stop4h 12m
Chicago Midway
lun. 10/19
6:44 pm-11:16 pm
1 stop3h 32m
$197
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
sam. 8/22
6:05 am-7:25 am
Nonstop2h 20m
Chicago O'Hare Intl
sam. 8/22
6:15 pm-9:29 pm
Nonstop2h 14m
$201
Washington, D.C.Chicago
DCA - MDW
DCAMDW
Washington, D.C. Reagan-National
mer. 9/2
2:10 pm-7:15 pm
1 stop6h 05m
Chicago Midway
sam. 9/5
10:05 am-8:50 pm
2 stops9h 45m
$202
Washington, D.C.Chicago
DCA - ORD
DCAORD
Washington, D.C. Reagan-National
ven. 9/11
8:30 am-9:45 am
Nonstop2h 15m
Chicago O'Hare Intl
lun. 9/14
2:00 pm-5:08 pm
Nonstop2h 08m
$216
Washington, D.C.Chicago
IAD - ORD
IADORD
Washington, D.C. Dulles Intl
sam. 9/5
1:10 pm-2:27 pm
Nonstop2h 17m
Chicago O'Hare Intl
mer. 9/9
10:50 am-1:55 pm
Nonstop2h 05m
$216
Washington, D.C.Chicago
IAD - MDW
IADMDW
Washington, D.C. Dulles Intl
sam. 9/5
6:10 am-9:17 am
1 stop4h 07m
Chicago Midway
mer. 9/9
6:05 am-11:30 am
1 stop4h 25m
$236
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
mer. 10/14
6:10 am-10:30 am
1 stop5h 20m
Chicago O'Hare Intl
jeu. 10/22
5:29 pm-11:04 pm
1 stop4h 35m
$238
Washington, D.C.Chicago
DCA - MDW
DCAMDW
Washington, D.C. Reagan-National
ven. 9/11
6:50 pm-10:00 pm
1 stop4h 10m
Chicago Midway
sam. 9/12
7:55 am-4:55 pm
2 stops8h 00m
$241
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
ven. 8/28
5:20 pm-6:15 pm
Nonstop1h 55m
Chicago Midway
lun. 8/31
9:00 am-11:55 am
Nonstop1h 55m
$249
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.
IAD-MDW
BWI-ORD
DCA-MDW
DCA-ORD
PHL-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 Maryland to Illinois
USMD-USIL
IAD-MDW
BWI-ORD
DCA-MDW
DCA-ORD
What is the cheapest month to book a flight from Maryland to Illinois?
Currently, September is the cheapest month in which you can book a flight from Maryland to Illinois (average of $209). Flying from Maryland to Illinois in June is currently the most expensive (average of $376). 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 août 3, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 31% on flights from Maryland to Illinois by exploring options for tickets in the afternoon.
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 août 3, 2026.
The most flights from USMD to USIL are scheduled on a Sunday (22 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (8 on average).
How much does it cost to fly round-trip from Maryland to Illinois?
Airfare is typical for this route at the moment.
Maryland to Illinois flights typically cost between $193 and $339 in August.The cheapest round-trip price found within the last 5 days was $198 on Frontier (Aug 20-Aug 25).
How far ahead should I book a flight from Maryland to Illinois?
The price you pay for your flight from Maryland to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 August 1, 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. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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 août 3, 2026.
Read through reviews of airlines operating flights from Maryland to Illinois, 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.
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Crew
8.6
Food
7.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
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.
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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 août 3, 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 5 airlines flying from Maryland to Illinois
Discover the top 5 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 août 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$175 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$131 | Average$401 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$134 | Average$326 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$174 | Average$340 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$308 | Average$413 | FlexibilityNo cancel fee | On-timeN/A |