$66+ Cheap flights from Baltimore (BWI) 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Apr 13 — Apr 201
Round-trip
1 adult, Economy
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Find cheap flights from Baltimore to Illinois with Cheapflights
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Cheapest flights from Baltimore to IllinoisExplore the most affordable flight options available from Baltimore to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 14, 2026.
Explore the most affordable flight options available from Baltimore to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 14, 2026.
This Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Mon 4/2012:20 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/9![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Thu 4/1612:42 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/9![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:49 pm
BWI
- ORD
1 stop17h 13m
Frontier
Wed 4/226:08 pm
ORD
- BWI
1 stop12h 54m
Frontier
Deal found 3/9![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Multiple Airlines
Sat 4/189:16 am
ORD
- BWI
1 stop6h 42m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$139
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 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:44 pm
BWI
- ORD
1 stop13h 56m
Frontier
Wed 4/221:27 pm
ORD
- BWI
1 stop18h 50m
Frontier
Deal found 3/9![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
Wed 4/2211:07 am
ORD
- BWI
1 stop12h 37m
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.
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
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:19 pm
BWI
- MDW
1 stop5h 48m
Frontier
Wed 4/156:30 am
MDW
- BWI
1 stop9h 24m
Frontier
Deal found 3/9![Frontier logo]()
$154
Best flights from Baltimore to IllinoisDiscover carefully curated flight deals from Baltimore to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 14, 2026.
Discover carefully curated flight deals from Baltimore to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 14, 2026.
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.
Sat 4/189:46 pm
BWI
- RFD
1 stop13h 01m
Multiple Airlines
Mon 4/207:09 pm
RFD
- BWI
1 stop17h 32m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$222
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 4/117:05 pm
BWI
- ORD
Nonstop2h 21m
United Airlines
Mon 4/136:45 am
ORD
- BWI
Nonstop1h 54m
United Airlines
Deal found 3/12![United Airlines logo]()
$239
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/159:35 am
BWI
- MDW
Nonstop2h 05m
Southwest
Thu 4/1612:45 pm
MDW
- BWI
1 stop3h 20m
Southwest
Deal found 3/9![Southwest logo]()
$251
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:40 am
BWI
- ORD
1 stop4h 30m
Delta
Wed 5/137:00 am
ORD
- BWI
1 stop3h 43m
Delta
Deal found 3/11![Delta logo]()
$304
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/98:14 pm
BWI
- PIA
1 stop4h 38m
American Airlines
Thu 4/166:00 am
PIA
- BWI
1 stop4h 11m
American Airlines
Deal found 3/11![American Airlines logo]()
$344
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.
Thu 5/146:15 am
BWI
- ORD
Nonstop2h 21m
United Airlines
Thu 5/282:25 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Deal found 3/13![United Airlines logo]()
$259
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/229:40 pm
BWI
- ORD
1 stop12h 30m
Southwest
Tue 5/261:35 pm
ORD
- BWI
1 stop6h 35m
Southwest
Deal found 3/9![Southwest logo]()
$274
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.
Sat 4/119:48 pm
BWI
- RFD
1 stop12h 59m
Multiple Airlines
Mon 4/137:09 pm
RFD
- BWI
2 stops20h 45m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$285
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:15 am
BWI
- ORD
Nonstop2h 14m
United Airlines
Mon 6/86:20 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Deal found 3/9![United Airlines 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.
Sun 5/37:45 am
BWI
- MDW
Nonstop2h 00m
Southwest
Wed 5/67:45 am
MDW
- BWI
1 stop3h 05m
Southwest
Deal found 3/10![Southwest logo]()
$285
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.
Thu 7/96:00 am
BWI
- MLI
1 stop5h 26m
Delta
Tue 7/1411:00 am
MLI
- BWI
1 stop5h 06m
Delta
Deal found 3/14![Delta logo]()
$329
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 4/255:10 pm
BWI
- MDW
2 stops6h 25m
Southwest
Mon 4/2712:45 pm
MDW
- BWI
1 stop3h 20m
Southwest
Deal found 3/10![Southwest logo]()
$286
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/206:50 am
BWI
- ORD
Nonstop2h 15m
United Airlines
Sat 6/2710:51 am
ORD
- BWI
Nonstop2h 06m
United Airlines
Deal found 3/11![United Airlines logo]()
$289
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:52 pm
BWI
- PIA
1 stop4h 41m
American Airlines
Mon 4/276:23 pm
PIA
- BWI
1 stop4h 33m
American Airlines
Deal found 3/10![American Airlines logo]()
$375
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 5/236:00 am
BWI
- MLI
1 stop5h 20m
Delta
Tue 5/265:17 pm
MLI
- BWI
1 stop6h 40m
Delta
Deal found 3/10![Delta logo]()
$344
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.
Sat 5/301:10 pm
BWI
- RFD
1 stop22h 27m
Multiple Airlines
Mon 6/18:03 pm
RFD
- BWI
1 stop12h 12m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$344
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.
Sat 5/3011:50 am
BWI
- MDW
1 stop6h 05m
Southwest
Mon 6/19:25 pm
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/12![Southwest logo]()
$287
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:00 am
BWI
- PIA
1 stop5h 02m
United Airlines
Thu 4/161:20 pm
PIA
- BWI
1 stop7h 03m
United Airlines
Deal found 3/11![United Airlines logo]()
$309
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.
Sat 8/16:15 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Mon 8/38:50 pm
MDW
- BWI
Nonstop1h 55m
Southwest
Deal found 3/12![Southwest logo]()
$289
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/266:52 am
BWI
- PIA
1 stop6h 55m
American Airlines
Mon 3/306:50 pm
PIA
- BWI
1 stop4h 00m
American Airlines
Deal found 3/11![American Airlines logo]()
$389
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.
Wed 6/310:10 am
BWI
- RFD
1 stop25h 27m
Multiple Airlines
Sun 6/711:27 am
RFD
- BWI
1 stop8h 59m
Multiple Airlines
Deal found 3/12![Multiple Airlines logo]()
$368
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.
Thu 5/286:10 am
BWI
- ORD
Nonstop2h 15m
United Airlines
Sun 5/316:20 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Deal found 3/13![United Airlines logo]()
$314
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:05 am
BWI
- MDW
Nonstop2h 05m
Southwest
Tue 5/267:50 am
MDW
- BWI
1 stop5h 35m
Southwest
Deal found 3/11![Southwest logo]()
$289
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 5/258:05 pm
BWI
- CMI
1 stop4h 54m
United Airlines
Sat 6/69:49 am
CMI
- BWI
1 stop6h 12m
United Airlines
Deal found 3/13![United Airlines logo]()
$318
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.
Sat 4/185:10 pm
BWI
- MDW
2 stops6h 25m
Southwest
Mon 4/205:40 pm
MDW
- BWI
1 stop4h 05m
Southwest
Deal found 3/12![Southwest logo]()
$290
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1511:41 am
BWI
- EVV
1 stop7h 12m
American Airlines
Mon 5/186:23 pm
EVV
- BWI
1 stop4h 33m
American Airlines
Deal found 3/12![American Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:00 am
BWI
- EVV
1 stop5h 39m
Delta
Sat 3/285:59 pm
EVV
- BWI
1 stop5h 54m
Delta
Deal found 3/9![Delta logo]()
$455
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 4/96:22 pm
BWI
- RFD
1 stop16h 32m
Multiple Airlines
Fri 4/107:09 pm
RFD
- BWI
1 stop13h 01m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$415
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/248:15 am
BWI
- ORD
Nonstop2h 14m
United Airlines
Sun 6/286:20 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Deal found 3/11![United Airlines logo]()
$319
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/108:14 pm
BWI
- EVV
1 stop4h 14m
American Airlines
Fri 4/176:23 pm
EVV
- BWI
1 stop4h 33m
American Airlines
Deal found 3/12![American Airlines logo]()
$427
Last-minute flights from Baltimore to IllinoisDiscover last-minute flight deals from Baltimore to Illinois. Data last updated March 14, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Illinois. Data last updated March 14, 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 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Multiple Airlines
Sat 4/189:16 am
ORD
- BWI
1 stop6h 42m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$139
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 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:19 pm
BWI
- MDW
1 stop5h 48m
Frontier
Wed 4/156:30 am
MDW
- BWI
1 stop9h 24m
Frontier
Deal found 3/9![Frontier logo]()
$154
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
Wed 4/2211:07 am
ORD
- BWI
1 stop12h 37m
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.
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 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Thu 4/1612:42 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/9![Frontier logo]()
$135
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 Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Mon 4/2012:20 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/9![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/208:44 pm
BWI
- ORD
1 stop13h 56m
Frontier
Wed 4/221:27 pm
ORD
- BWI
1 stop18h 50m
Frontier
Deal found 3/9![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:49 pm
BWI
- ORD
1 stop17h 13m
Frontier
Wed 4/226:08 pm
ORD
- BWI
1 stop12h 54m
Frontier
Deal found 3/9![Frontier logo]()
$138
One-way flights from Baltimore to IllinoisSearch for one-way flight options from Baltimore to Illinois. Find affordable one-way fares based on user searches. Data last updated March 14, 2026.
Search for one-way flight options from Baltimore to Illinois. Find affordable one-way fares based on user searches. Data last updated March 14, 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.
Tue 4/145:49 pm
BWI
- STL
1 stop14h 01m
Frontier
Deal found 3/10![Frontier logo]()
$66
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 5/126:00 pm
BWI
- STL
1 stop13h 50m
Frontier
Deal found 3/10![Frontier logo]()
$70
This Super.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:19 pm
BWI
- ORD
1 stop8h 20m
Frontier
Deal found 3/9![Frontier logo]()
$79
This Booking.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/115:42 pm
BWI
- STL
1 stop6h 43m
Frontier
Deal found 3/9![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 4/133:19 pm
BWI
- MDW
1 stop29h 12m
Frontier
Deal found 3/10![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:27 pm
BWI
- ORD
1 stop22h 13m
Frontier
Deal found 3/9![Frontier logo]()
$80
This Mytrip deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:05 am
BWI
- STL
1 stop5h 25m
Frontier
Deal found 3/9![Frontier logo]()
$81
This Flightnetwork 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:49 pm
BWI
- MDW
1 stop5h 25m
Frontier
Deal found 3/10![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 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 4/155:49 pm
BWI
- STL
1 stop17h 41m
Frontier
Deal found 3/10![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:00 pm
BWI
- STL
1 stop17h 30m
Frontier
Deal found 3/9![Frontier logo]()
$84
This Frontier 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 Frontier 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 3/12![Frontier logo]()
$84
Find flight deals from Baltimore to Illinois
Keep the following information in mind while searching for Baltimore to Illinois flight deals. Data was last updated March 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $133 (Super.com) |
One-way from | $66 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $309 |
Cheapflights Fare Finder
Customize your flight search to find flights from Baltimore 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 14, 2026.
Use the filters below to find and compare flights from Baltimore to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BaltimoreChicago
BWI - RFD
BWIRFD
Baltimore/Washington
Sat 4/18
9:46 pm-9:47 am
1 stop13h 01m
Chicago Greater Rockford
Mon 4/20
7:09 pm-1:41 pm
1 stop17h 32m
$222
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 4/11
7:05 pm-8:26 pm
Nonstop2h 21m
Chicago O'Hare Intl
Mon 4/13
6:45 am-9:39 am
Nonstop1h 54m
$239
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Wed 4/15
9:35 am-10:40 am
Nonstop2h 05m
Chicago Midway
Thu 4/16
12:45 pm-5:05 pm
1 stop3h 20m
$251
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Thu 5/14
6:15 am-7:36 am
Nonstop2h 21m
Chicago O'Hare Intl
Thu 5/28
2:25 pm-5:33 pm
Nonstop2h 08m
$259
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Thu 6/4
8:15 am-9:29 am
Nonstop2h 14m
Chicago O'Hare Intl
Mon 6/8
6:20 am-9:17 am
Nonstop1h 57m
$265
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Fri 5/22
9:40 pm-9:10 am
1 stop12h 30m
Chicago O'Hare Intl
Tue 5/26
1:35 pm-9:10 pm
1 stop6h 35m
$274
BaltimoreChicago
BWI - RFD
BWIRFD
Baltimore/Washington
Sat 4/11
9:48 pm-9:47 am
1 stop12h 59m
Chicago Greater Rockford
Mon 4/13
7:09 pm-4:54 pm
2 stops20h 45m
$285
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sun 5/3
7:45 am-8:45 am
Nonstop2h 00m
Chicago Midway
Wed 5/6
7:45 am-11:50 am
1 stop3h 05m
$285
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sat 4/25
5:10 pm-10:35 pm
2 stops6h 25m
Chicago Midway
Mon 4/27
12:45 pm-5:05 pm
1 stop3h 20m
$286
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sat 5/30
11:50 am-4:55 pm
1 stop6h 05m
Chicago Midway
Mon 6/1
9:25 pm-12:15 am
Nonstop1h 50m
$287
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Baltimore to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Baltimore with our price prediction graph.
BWI-STL
BWI-ORD
BWI-MDW
BWI-RFD
BWI-CMI
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 Baltimore to Illinois
BWI-USIL
BWI-STL
BWI-ORD
BWI-MDW
BWI-RFD
What is the cheapest month to book a flight from Baltimore to Illinois?
Currently, January is the cheapest month in which you can book a flight from Baltimore to Illinois (average of $57). Flying from Baltimore to Illinois in June is currently the most expensive (average of $133). 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 BWI to IL?
Find hourly flight availability from Baltimore 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 14, 2026.
When flying from Baltimore to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 40% versus a flight in the morning.
What is the cheapest day to fly from Baltimore to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Baltimore to Illinois. Price data was last updated on February 21, 2026.
Travelers seeking maximum savings on their Baltimore to Illinois flight should consider departing on Monday afternoons 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 Baltimore to Illinois
Explore weekly flight availability from Baltimore 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 14, 2026.
The most flights from BWI to USIL are scheduled on a Friday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).
How much does it cost to fly round-trip from Baltimore to Illinois?
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 14, 2026.
Read reviews from past customers who have flown Southwest,United Airlines, andAmerican Airlines from Baltimore to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from Baltimore to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Baltimore to Illinois
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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Baltimore to Illinois by cabin class
Find flights from Baltimore to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Baltimore and Illinois flights
Browse other Baltimore and Illinois flight options. Last updated on March 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Baltimore to Illinois flights
Consider these flights traveling from Baltimore to Illinois.
Top 6 airlines flying from Baltimore to Illinois
Discover the top 6 airlines that operate flights from Baltimore 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 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$41 | Average$114 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$57 | Average$166 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$131 | Average$318 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$139 | Average$287 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$158 | Average$393 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$486 | FlexibilityNo cancel fee | On-timeN/A |