$65+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Apr 10 — Apr 171
Round-trip
1 adult, Economy
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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 11, 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 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/212:20 pm
BWI
- MDW
1 stop7h 17m
Frontier
Mon 5/42:15 pm
MDW
- BWI
1 stop16h 57m
Frontier
Deal found 3/6![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Mon 4/204:28 pm
ORD
- BWI
1 stop17h 54m
Frontier
Deal found 3/6![Frontier logo]()
$127
This Frontier deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Fri 4/106:15 am
ORD
- BWI
Nonstop2h 06m
Frontier
Deal found 3/8![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/133:44 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Tue 4/146:08 pm
ORD
- BWI
1 stop16h 11m
Frontier
Deal found 3/6![Frontier logo]()
$131
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Sun 4/193:08 pm
ORD
- BWI
1 stop26h 51m
Frontier
Deal found 3/6![Frontier logo]()
$132
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 Frontier deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:44 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Fri 4/1712:42 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/8![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 3/6. Clicking the “Pick Dates” 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 4/178:35 pm
BWI
- ORD
1 stop27h 04m
Frontier
Tue 4/216:08 pm
ORD
- BWI
1 stop16h 14m
Frontier
Deal found 3/6![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/1412:17 pm
BWI
- STL
1 stop19h 33m
Frontier
Fri 4/178:23 pm
STL
- BWI
1 stop19h 35m
Frontier
Deal found 3/6![Frontier logo]()
$147
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 3/6. Clicking the “Pick Dates” 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 4/2912:17 pm
BWI
- MDW
1 stop8h 14m
Frontier
Sat 5/26:00 am
MDW
- BWI
1 stop9h 58m
Frontier
Deal found 3/6![Frontier logo]()
$155
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 11, 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 11, 2026.
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/239:15 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Fri 4/247:30 am
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/6![Southwest logo]()
$197
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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
Sun 4/126:45 am
ORD
- BWI
Nonstop1h 54m
United Airlines
Deal found 3/7![United Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 6/311:30 am
BWI
- RFD
1 stop24h 07m
Multiple Airlines
Sun 6/711:27 am
RFD
- BWI
1 stop9h 53m
Multiple Airlines
Deal found 3/6![Multiple Airlines logo]()
$245
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:11 am
BWI
- MDW
1 stop3h 32m
Delta
Mon 4/205:21 pm
MDW
- BWI
1 stop6h 17m
Delta
Deal found 3/6![Delta logo]()
$288
This American Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/147:52 pm
BWI
- MLI
1 stop5h 02m
American Airlines
Sat 5/166:40 pm
MLI
- BWI
1 stop4h 16m
American Airlines
Deal found 3/7![American Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/256:50 am
BWI
- MDW
Nonstop2h 05m
Southwest
Tue 4/287:00 am
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/6![Southwest logo]()
$197
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/19:15 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Mon 5/49:00 am
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/6![Southwest logo]()
$197
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:08 am
BWI
- ORD
Nonstop2h 18m
United Airlines
Sat 5/211:10 am
ORD
- BWI
Nonstop2h 03m
United Airlines
Deal found 3/10![United Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:50 am
BWI
- MDW
Nonstop2h 05m
Southwest
Tue 5/57:50 am
MDW
- BWI
1 stop3h 10m
Southwest
Deal found 3/6![Southwest logo]()
$203
This United Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/47:05 pm
BWI
- ORD
Nonstop2h 21m
United Airlines
Sun 4/56:45 am
ORD
- BWI
Nonstop1h 54m
United Airlines
Deal found 3/8![United Airlines logo]()
$240
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/1210:35 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Wed 4/159:10 am
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/6![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/236:31 pm
BWI
- MLI
1 stop4h 50m
Delta
Tue 5/265:17 pm
MLI
- BWI
1 stop6h 40m
Delta
Deal found 3/6![Delta logo]()
$289
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.
Sat 4/119:48 pm
BWI
- RFD
1 stop12h 59m
Multiple Airlines
Mon 4/137:09 pm
RFD
- BWI
1 stop17h 32m
Multiple Airlines
Deal found 3/9![Multiple Airlines logo]()
$318
This United Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/58:15 am
BWI
- ORD
Nonstop2h 14m
United Airlines
Mon 6/86:20 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Deal found 3/6![United Airlines logo]()
$267
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.
Fri 7/246:00 am
BWI
- BMI
1 stop6h 11m
Delta
Sat 8/14:00 pm
BMI
- BWI
1 stop7h 15m
Delta
Deal found 3/9![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/163:10 pm
BWI
- ORD
1 stop7h 45m
Southwest
Mon 5/187:35 pm
ORD
- BWI
2 stops14h 20m
Southwest
Deal found 3/6![Southwest logo]()
$228
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 7/256:10 pm
BWI
- BMI
1 stop5h 13m
Delta
Fri 7/314:00 pm
BMI
- BWI
1 stop7h 15m
Delta
Deal found 3/7![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/146:15 am
BWI
- ORD
1 stop7h 35m
Southwest
Mon 5/187:35 pm
ORD
- BWI
2 stops14h 20m
Southwest
Deal found 3/6![Southwest logo]()
$228
This United Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 5/127:05 pm
BWI
- CMI
1 stop4h 28m
United Airlines
Tue 5/199:49 am
CMI
- BWI
1 stop6h 39m
United Airlines
Deal found 3/7![United Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 7/256:10 pm
BWI
- BMI
1 stop5h 13m
Delta
Sat 8/14:00 pm
BMI
- BWI
1 stop7h 15m
Delta
Deal found 3/7![Delta logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/168:15 pm
BWI
- RFD
1 stop12h 34m
Multiple Airlines
Mon 7/207:50 pm
RFD
- BWI
1 stop11h 33m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$366
This American Airlines deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/95:05 am
BWI
- EVV
1 stop6h 30m
American Airlines
Sun 4/126:56 pm
EVV
- BWI
1 stop4h 00m
American Airlines
Deal found 3/6![American Airlines logo]()
$407
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/166:00 am
BWI
- PIA
1 stop5h 02m
United Airlines
Sat 4/1810:40 am
PIA
- BWI
1 stop5h 53m
United Airlines
Deal found 3/5![United Airlines logo]()
$280
This Southwest deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/162:00 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Mon 4/209:00 am
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/6![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/166:00 am
BWI
- PIA
1 stop5h 02m
United Airlines
Tue 4/218:05 am
PIA
- BWI
1 stop4h 57m
United Airlines
Deal found 3/5![United Airlines logo]()
$280
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/207:54 pm
BWI
- PIA
1 stop5h 02m
American Airlines
Tue 3/246:50 pm
PIA
- BWI
1 stop3h 43m
American Airlines
Deal found 3/9![American Airlines logo]()
$419
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/105:00 pm
BWI
- MDW
1 stop4h 35m
Southwest
Sun 4/125:15 am
MDW
- BWI
Nonstop1h 45m
Southwest
Deal found 3/7![Southwest logo]()
$247
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.
Sun 7/266:00 am
BWI
- BMI
1 stop6h 11m
Delta
Sat 8/14:00 pm
BMI
- BWI
1 stop7h 15m
Delta
Deal found 3/9![Delta logo]()
$329
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 American Airlines deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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 4/166:12 am
BWI
- PIA
2 stops13h 12m
American Airlines
Tue 4/2112:12 pm
PIA
- BWI
2 stops10h 44m
American Airlines
Deal found 3/5![American Airlines logo]()
$419
Last-minute flights from Baltimore to IllinoisDiscover last-minute flight deals from Baltimore to Illinois. Data last updated March 11, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Illinois. Data last updated March 11, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/5. Clicking the “Pick Dates” 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
- ORD
1 stop8h 20m
Frontier
Wed 4/88:00 am
ORD
- BWI
Nonstop2h 06m
Frontier
Deal found 3/5![Frontier logo]()
$129
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 Frontier deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Fri 4/106:15 am
ORD
- BWI
Nonstop2h 06m
Frontier
Deal found 3/8![Frontier logo]()
$128
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 3/6. Clicking the “Pick Dates” 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 4/133:44 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Tue 4/146:08 pm
ORD
- BWI
1 stop16h 11m
Frontier
Deal found 3/6![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:44 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Fri 4/1712:42 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/8![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/1412:17 pm
BWI
- STL
1 stop19h 33m
Frontier
Fri 4/178:23 pm
STL
- BWI
1 stop19h 35m
Frontier
Deal found 3/6![Frontier logo]()
$147
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 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Mon 4/204:28 pm
ORD
- BWI
1 stop17h 54m
Frontier
Deal found 3/6![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:42 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Sun 4/193:08 pm
ORD
- BWI
1 stop26h 51m
Frontier
Deal found 3/6![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/178:35 pm
BWI
- ORD
1 stop27h 04m
Frontier
Tue 4/216:08 pm
ORD
- BWI
1 stop16h 14m
Frontier
Deal found 3/6![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/2912:17 pm
BWI
- MDW
1 stop8h 14m
Frontier
Sat 5/26:00 am
MDW
- BWI
1 stop9h 58m
Frontier
Deal found 3/6![Frontier logo]()
$155
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 11, 2026.
Search for one-way flight options from Baltimore to Illinois. Find affordable one-way fares based on user searches. Data last updated March 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 3/6![Frontier logo]()
$65
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 5/56:00 pm
BWI
- STL
1 stop13h 50m
Frontier
Deal found 3/10![Frontier logo]()
$69
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 5/119:43 pm
BWI
- ORD
1 stop24h 34m
Frontier
Deal found 3/9![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 5/104:25 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Deal found 3/6![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 4/76:05 am
BWI
- STL
1 stop5h 25m
Frontier
Deal found 3/6![Frontier logo]()
$72
This Expedia deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/154:25 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Deal found 3/6![Frontier logo]()
$72
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/194:44 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Deal found 3/8![Frontier logo]()
$73
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 3/6![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” 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 8/1711:30 am
BWI
- ORD
1 stop28h 44m
Frontier
Deal found 3/7![Frontier logo]()
$77
This Kiwi.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” 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 3/6![Frontier logo]()
$78
This Trip.com deal was found by Cheapflights users on 3/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:00 pm
BWI
- MDW
1 stop5h 19m
Frontier
Deal found 3/6![Frontier logo]()
$78
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 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $127 (Kiwi.com) |
One-way from | $65 (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 11, 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
Quickest round-trip
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Thu 4/23
9:15 pm-10:20 pm
Nonstop2h 05m
Chicago Midway
Fri 4/24
7:30 am-10:20 am
Nonstop1h 50m
$197
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sat 4/25
6:50 am-7:55 am
Nonstop2h 05m
Chicago Midway
Tue 4/28
7:00 am-9:50 am
Nonstop1h 50m
$197
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Fri 5/1
9:15 pm-10:20 pm
Nonstop2h 05m
Chicago Midway
Mon 5/4
9:00 am-11:50 am
Nonstop1h 50m
$197
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 4/11
7:05 pm-8:26 pm
Nonstop2h 21m
Chicago O'Hare Intl
Sun 4/12
6:45 am-9:39 am
Nonstop1h 54m
$200
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sat 5/2
6:50 am-7:55 am
Nonstop2h 05m
Chicago Midway
Tue 5/5
7:50 am-12:00 pm
1 stop3h 10m
$203
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sun 4/12
10:35 pm-11:40 pm
Nonstop2h 05m
Chicago Midway
Wed 4/15
9:10 am-12:00 pm
Nonstop1h 50m
$217
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 5/16
3:10 pm-9:55 pm
1 stop7h 45m
Chicago O'Hare Intl
Mon 5/18
7:35 pm-10:55 am
2 stops14h 20m
$228
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Thu 5/14
6:15 am-12:50 pm
1 stop7h 35m
Chicago O'Hare Intl
Mon 5/18
7:35 pm-10:55 am
2 stops14h 20m
$228
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Wed 4/29
11:08 am-12:26 pm
Nonstop2h 18m
Chicago O'Hare Intl
Sat 5/2
11:10 am-2:13 pm
Nonstop2h 03m
$237
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 4/4
7:05 pm-8:26 pm
Nonstop2h 21m
Chicago O'Hare Intl
Sun 4/5
6:45 am-9:39 am
Nonstop1h 54m
$240
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-ORD
BWI-STL
BWI-MDW
BWI-RFD
BWI-MLI
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-ORD
BWI-STL
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 11, 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 11, 2026.
The most flights from BWI to USIL are scheduled on a Monday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated March 11, 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
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
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 11, 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 11, 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 |