$75+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Apr 18 — Apr 251
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 19, 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 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2812:17 pm
BWI
- MDW
1 stop8h 14m
Frontier
Tue 5/512:27 pm
MDW
- BWI
1 stop9h 30m
Frontier
Deal found 3/14![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Tue 5/51:59 pm
ORD
- BWI
1 stop7h 58m
Frontier
Deal found 3/14![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 stop8h 14m
Frontier
Wed 4/222:15 pm
MDW
- BWI
1 stop9h 29m
Frontier
Deal found 3/16![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Tue 5/51:59 pm
ORD
- BWI
1 stop7h 58m
Frontier
Deal found 3/15![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Thu 4/91:19 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/14![Frontier logo]()
$148
This Expedia deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia 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
Thu 4/1612:42 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/15![Frontier logo]()
$149
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:19 am
BWI
- ORD
1 stop7h 56m
Multiple Airlines
Thu 4/91:19 pm
ORD
- BWI
Nonstop2h 05m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:53 pm
BWI
- ORD
1 stop17h 30m
Multiple Airlines
Wed 5/61:59 pm
ORD
- BWI
1 stop7h 58m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:49 pm
BWI
- STL
1 stop17h 41m
Frontier
Tue 5/196:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Deal found 3/18![Frontier logo]()
$154
This Frontier deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:09 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Mon 4/134:34 pm
ORD
- BWI
1 stop7h 10m
Frontier
Deal found 3/16![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Mon 5/44:28 pm
ORD
- BWI
1 stop14h 15m
Frontier
Deal found 3/17![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 4/1812:18 pm
BWI
- MDW
1 stop7h 19m
Frontier
Wed 4/222:15 pm
MDW
- BWI
1 stop9h 29m
Frontier
Deal found 3/16![Frontier logo]()
$157
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 19, 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 19, 2026.
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1511:08 am
BWI
- ORD
Nonstop2h 18m
United Airlines
Wed 4/222:30 pm
ORD
- BWI
Nonstop2h 03m
United Airlines
Deal found 3/17![United Airlines logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/131:04 pm
BWI
- EVV
1 stop7h 02m
Multiple Airlines
Mon 4/207:46 pm
EVV
- BWI
2 stops14h 36m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/1610:45 am
BWI
- MDW
1 stop3h 25m
Southwest
Thu 4/239:15 pm
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/15![Southwest logo]()
$245
This Delta deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:25 am
BWI
- ORD
1 stop4h 36m
Delta
Sun 5/317:00 am
ORD
- BWI
1 stop3h 43m
Delta
Deal found 3/18![Delta logo]()
$314
This American Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:39 am
BWI
- BMI
1 stop6h 07m
American Airlines
Mon 5/42:46 pm
BMI
- BWI
1 stop3h 53m
American Airlines
Deal found 3/17![American Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:05 pm
BWI
- MDW
1 stop5h 40m
Southwest
Sat 4/115:25 pm
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/14![Southwest logo]()
$249
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:00 am
BWI
- ORD
Nonstop2h 21m
United Airlines
Fri 4/1011:00 am
ORD
- BWI
Nonstop2h 02m
United Airlines
Deal found 3/17![United Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:40 pm
BWI
- MDW
1 stop3h 35m
Southwest
Thu 5/2812:45 pm
MDW
- BWI
1 stop3h 20m
Southwest
Deal found 3/14![Southwest logo]()
$254
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:20 pm
BWI
- ORD
Nonstop2h 24m
United Airlines
Mon 5/256:20 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Deal found 3/17![United Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/109:59 pm
BWI
- RFD
1 stop13h 00m
Multiple Airlines
Thu 5/1410:37 am
RFD
- BWI
1 stop9h 49m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$304
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/94:15 pm
BWI
- MDW
1 stop5h 20m
Southwest
Sat 4/117:45 am
MDW
- BWI
1 stop5h 40m
Southwest
Deal found 3/16![Southwest logo]()
$259
This Delta deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:00 am
BWI
- MLI
1 stop5h 26m
Delta
Tue 7/1411:00 am
MLI
- BWI
1 stop5h 06m
Delta
Deal found 3/15![Delta logo]()
$329
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:22 pm
BWI
- RFD
1 stop16h 32m
Multiple Airlines
Mon 4/137:09 pm
RFD
- BWI
1 stop17h 32m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$316
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 5/1610:35 am
BWI
- ORD
2 stops5h 55m
Southwest
Wed 5/201:35 pm
ORD
- BWI
1 stop6h 35m
Southwest
Deal found 3/16![Southwest logo]()
$264
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/58:15 am
BWI
- ORD
Nonstop2h 14m
United Airlines
Mon 6/89:25 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Deal found 3/17![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure 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
Sun 4/266:23 pm
PIA
- BWI
1 stop4h 33m
American Airlines
Deal found 3/15![American Airlines logo]()
$375
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1610:35 am
BWI
- ORD
2 stops5h 55m
Southwest
Thu 5/283:05 pm
ORD
- BWI
1 stop8h 10m
Southwest
Deal found 3/14![Southwest logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 7/811:30 am
BWI
- RFD
1 stop24h 07m
Multiple Airlines
Mon 7/137:50 pm
RFD
- BWI
1 stop11h 33m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$320
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.
Sat 8/14:39 pm
BWI
- MLI
1 stop6h 52m
Delta
Mon 8/35:00 pm
MLI
- BWI
1 stop4h 39m
Delta
Deal found 3/14![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/18:30 pm
BWI
- PIA
1 stop4h 36m
United Airlines
Wed 5/68:30 am
PIA
- BWI
1 stop4h 43m
United Airlines
Deal found 3/18![United Airlines logo]()
$310
This American Airlines deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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.
Wed 4/15:59 pm
BWI
- PIA
1 stop6h 57m
American Airlines
Tue 4/75:39 pm
PIA
- BWI
1 stop4h 25m
American Airlines
Deal found 3/16![American Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 3/16![Multiple Airlines logo]()
$322
This Southwest deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 5/210:35 am
BWI
- ORD
2 stops5h 55m
Southwest
Tue 5/55:55 am
ORD
- BWI
2 stops7h 45m
Southwest
Deal found 3/16![Southwest logo]()
$269
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.
Sat 5/236:31 pm
BWI
- MLI
1 stop4h 50m
Delta
Tue 5/265:17 pm
MLI
- BWI
1 stop6h 30m
Delta
Deal found 3/14![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/216:10 am
BWI
- ORD
Nonstop2h 15m
United Airlines
Tue 5/266:20 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Deal found 3/18![United Airlines logo]()
$319
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:12 pm
BWI
- RFD
1 stop15h 35m
Multiple Airlines
Fri 4/107:09 pm
RFD
- BWI
2 stops16h 01m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:05 am
BWI
- MDW
Nonstop2h 05m
Southwest
Fri 5/19:00 am
MDW
- BWI
Nonstop1h 50m
Southwest
Deal found 3/14![Southwest logo]()
$274
This American Airlines deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/14:15 pm
BWI
- PIA
1 stop7h 58m
American Airlines
Wed 5/612:12 pm
PIA
- BWI
2 stops10h 44m
American Airlines
Deal found 3/18![American Airlines logo]()
$410
This United Airlines deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/128:05 pm
BWI
- ORD
Nonstop2h 24m
United Airlines
Mon 6/159:25 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Deal found 3/15![United Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2310:35 am
BWI
- ORD
2 stops5h 55m
Southwest
Tue 5/262:00 pm
ORD
- BWI
1 stop7h 15m
Southwest
Deal found 3/17![Southwest logo]()
$274
Last-minute flights from Baltimore to IllinoisDiscover last-minute flight deals from Baltimore to Illinois. Data last updated March 19, 2026 and is based on user searches.
Discover last-minute flight deals from Baltimore to Illinois. Data last updated March 19, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:55 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Thu 4/91:19 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/14![Frontier logo]()
$148
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:19 am
BWI
- ORD
1 stop7h 56m
Multiple Airlines
Thu 4/91:19 pm
ORD
- BWI
Nonstop2h 05m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$152
This Frontier deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:09 pm
BWI
- ORD
Nonstop2h 26m
Frontier
Mon 4/134:34 pm
ORD
- BWI
1 stop7h 10m
Frontier
Deal found 3/16![Frontier logo]()
$154
This Expedia deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia 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
Thu 4/1612:42 pm
ORD
- BWI
Nonstop2h 05m
Frontier
Deal found 3/15![Frontier logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 stop8h 14m
Frontier
Wed 4/222:15 pm
MDW
- BWI
1 stop9h 29m
Frontier
Deal found 3/16![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:49 pm
BWI
- ORD
1 stop17h 34m
Multiple Airlines
Thu 4/1612:42 pm
ORD
- BWI
Nonstop2h 05m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 4/1812:18 pm
BWI
- MDW
1 stop7h 19m
Frontier
Wed 4/222:15 pm
MDW
- BWI
1 stop9h 29m
Frontier
Deal found 3/16![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/225:49 pm
BWI
- STL
1 stop17h 41m
Frontier
Tue 5/196:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Deal found 3/18![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2812:17 pm
BWI
- MDW
1 stop8h 14m
Frontier
Tue 5/512:27 pm
MDW
- BWI
1 stop9h 30m
Frontier
Deal found 3/14![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Tue 5/51:59 pm
ORD
- BWI
1 stop7h 58m
Frontier
Deal found 3/14![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/286:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Mon 5/44:28 pm
ORD
- BWI
1 stop14h 15m
Frontier
Deal found 3/17![Frontier logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/296:00 am
BWI
- ORD
1 stop12h 00m
Frontier
Tue 5/51:59 pm
ORD
- BWI
1 stop7h 58m
Frontier
Deal found 3/15![Frontier logo]()
$145
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 19, 2026.
Search for one-way flight options from Baltimore to Illinois. Find affordable one-way fares based on user searches. Data last updated March 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/215:49 pm
BWI
- STL
1 stop14h 01m
Frontier
Deal found 3/19![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:49 pm
BWI
- STL
1 stop14h 01m
Frontier
Deal found 3/17![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:00 am
BWI
- MDW
1 stop14h 31m
Frontier
Deal found 3/18![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/139:25 pm
BWI
- ORD
1 stop14h 21m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/145:49 pm
BWI
- ORD
1 stop17h 34m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/83:19 pm
BWI
- STL
1 stop27h 15m
Frontier
Deal found 3/18![Frontier logo]()
$82
This Trip.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1812:18 pm
BWI
- MDW
1 stop7h 19m
Frontier
Deal found 3/17![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:12 pm
BWI
- RFD
1 stop15h 35m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$82
This Spirit deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Spirit is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/2310:09 am
BWI
- ORD
1 stop7h 47m
Spirit Airlines
Deal found 3/18![Spirit Airlines logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/73:19 pm
BWI
- MDW
1 stop5h 48m
Frontier
Deal found 3/18![Frontier logo]()
$83
This Super.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:44 pm
BWI
- ORD
Nonstop2h 23m
Frontier
Deal found 3/16![Frontier logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” 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 4/226:00 am
BWI
- MDW
1 stop17h 14m
Frontier
Deal found 3/16![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 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $144 (Kiwi.com) |
One-way from | $75 (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 19, 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 - ORD
BWIORD
Baltimore/Washington
Wed 4/15
11:08 am-12:26 pm
Nonstop2h 18m
Chicago O'Hare Intl
Wed 4/22
2:30 pm-5:33 pm
Nonstop2h 03m
$209
BaltimoreEvansville
BWI - EVV
BWIEVV
Baltimore/Washington
Mon 4/13
1:04 pm-7:06 pm
1 stop7h 02m
Evansville Dress Regional
Mon 4/20
7:46 pm-11:22 am
2 stops14h 36m
$245
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Thu 4/16
10:45 am-1:10 pm
1 stop3h 25m
Chicago Midway
Thu 4/23
9:15 pm-12:05 am
Nonstop1h 50m
$245
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Wed 4/8
3:05 pm-7:45 pm
1 stop5h 40m
Chicago Midway
Sat 4/11
5:25 pm-8:15 pm
Nonstop1h 50m
$249
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sat 5/16
2:40 pm-5:15 pm
1 stop3h 35m
Chicago Midway
Thu 5/28
12:45 pm-5:05 pm
1 stop3h 20m
$254
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Thu 4/9
4:15 pm-8:35 pm
1 stop5h 20m
Chicago Midway
Sat 4/11
7:45 am-2:25 pm
1 stop5h 40m
$259
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Tue 4/7
6:00 am-7:21 am
Nonstop2h 21m
Chicago O'Hare Intl
Fri 4/10
11:00 am-2:02 pm
Nonstop2h 02m
$263
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 5/16
10:35 am-3:30 pm
2 stops5h 55m
Chicago O'Hare Intl
Wed 5/20
1:35 pm-9:10 pm
1 stop6h 35m
$264
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 5/16
10:35 am-3:30 pm
2 stops5h 55m
Chicago O'Hare Intl
Thu 5/28
3:05 pm-12:15 am
1 stop8h 10m
$264
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 5/2
10:35 am-3:30 pm
2 stops5h 55m
Chicago O'Hare Intl
Tue 5/5
5:55 am-2:40 pm
2 stops7h 45m
$269
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-EVV
BWI-MDW
BWI-BMI
BWI-RFD
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-EVV
BWI-MDW
BWI-BMI
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 $134). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from 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 19, 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 37% 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 March 14, 2026.
Travelers seeking maximum savings on their Baltimore to Illinois flight should consider departing on Friday at noon when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from 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 19, 2026.
The most flights from BWI to USIL are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 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 19, 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.
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Comfort
8.0
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Entertainment
7.5
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.
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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 19, 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 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$41 | Average$114 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$57 | Average$165 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$131 | Average$317 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$139 | Average$287 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$158 | Average$394 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$486 | FlexibilityNo cancel fee | On-timeN/A |