$63+ Cheap flights from Illinois to Maryland
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
May 29 — Jun 51
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Maryland with Cheapflights
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Cheapest flights from Illinois to MarylandExplore the most affordable flight options available from Illinois to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.
Explore the most affordable flight options available from Illinois to Maryland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Tue 6/28:52 am
BWI
- STL
1 stop9h 41m
Frontier
Deal found 4/28![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 6/35:27 pm
STL
- BWI
1 stop13h 16m
Frontier
Sun 6/79:43 pm
BWI
- STL
1 stop12h 12m
Frontier
Deal found 4/27![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Fri 6/59:23 pm
BWI
- STL
1 stop12h 32m
Frontier
Deal found 4/29![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 6/15:27 pm
STL
- BWI
1 stop13h 16m
Frontier
Mon 6/89:23 pm
BWI
- STL
1 stop21h 07m
Frontier
Deal found 4/27![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 6/15:27 pm
STL
- BWI
1 stop13h 16m
Frontier
Thu 6/48:52 am
BWI
- STL
1 stop9h 41m
Frontier
Deal found 4/27![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/286:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Sun 5/319:43 pm
BWI
- STL
1 stop12h 12m
Frontier
Deal found 4/27![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 6/26:33 pm
STL
- BWI
1 stop20h 49m
Frontier
Mon 6/89:23 pm
BWI
- STL
1 stop21h 07m
Frontier
Deal found 4/26![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/235:27 pm
STL
- BWI
2 stops17h 48m
Frontier
Tue 5/269:13 pm
BWI
- STL
1 stop12h 42m
Frontier
Deal found 4/26![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/266:33 pm
STL
- BWI
1 stop12h 10m
Multiple Airlines
Tue 6/24:33 pm
BWI
- STL
2 stops17h 22m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Sun 5/319:43 pm
BWI
- STL
1 stop12h 12m
Frontier
Deal found 4/29![Frontier logo]()
$164
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:35 pm
MDW
- BWI
Nonstop1h 50m
Southwest
Tue 6/168:30 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Deal found 4/25![Southwest logo]()
$177
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/262:25 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Wed 5/277:05 pm
BWI
- ORD
Nonstop2h 24m
United Airlines
Deal found 4/26![United Airlines logo]()
$177
Best flights from Illinois to MarylandDiscover carefully curated flight deals from Illinois to Maryland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
Discover carefully curated flight deals from Illinois to Maryland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2026.
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/29:25 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Wed 6/38:05 pm
BWI
- ORD
Nonstop2h 24m
United Airlines
Deal found 4/25![United Airlines logo]()
$177
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:10 am
ORD
- BWI
1 stop3h 31m
Delta
Tue 8/1812:00 pm
BWI
- ORD
1 stop5h 48m
Delta
Deal found 4/28![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/2712:50 pm
MDW
- BWI
1 stop3h 35m
Southwest
Thu 5/287:10 pm
BWI
- MDW
Nonstop2h 10m
Southwest
Deal found 4/28![Southwest logo]()
$218
This Southwest deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/272:00 pm
ORD
- BWI
1 stop7h 15m
Southwest
Wed 6/310:00 am
BWI
- ORD
1 stop9h 25m
Southwest
Deal found 4/27![Southwest logo]()
$220
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/289:49 am
ORD
- DCA
1 stop7h 39m
Delta
Tue 6/211:00 am
DCA
- ORD
1 stop6h 34m
Delta
Deal found 4/27![Delta logo]()
$228
This United Airlines deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 6/183:53 pm
ORD
- IAD
Nonstop2h 09m
United Airlines
Tue 6/303:30 pm
IAD
- ORD
Nonstop2h 23m
United Airlines
Deal found 4/24![United Airlines logo]()
$233
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/217:00 am
ORD
- DCA
1 stop3h 32m
Delta
Wed 6/2412:17 pm
DCA
- ORD
1 stop5h 47m
Delta
Deal found 4/27![Delta logo]()
$228
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:00 am
MDW
- BWI
Nonstop1h 50m
Southwest
Wed 6/36:30 am
BWI
- MDW
Nonstop2h 05m
Southwest
Deal found 4/25![Southwest logo]()
$233
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 6/266:20 pm
ORD
- BWI
Nonstop2h 06m
United Airlines
Wed 7/18:25 am
BWI
- ORD
Nonstop2h 14m
United Airlines
Deal found 4/27![United Airlines logo]()
$243
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/195:30 am
ORD
- IAD
1 stop5h 12m
Delta
Mon 5/256:08 am
IAD
- ORD
1 stop5h 08m
Delta
Deal found 4/28![Delta logo]()
$228
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/211:55 am
ORD
- DCA
2 stops7h 50m
Southwest
Wed 6/39:05 am
DCA
- ORD
1 stop4h 45m
Southwest
Deal found 4/25![Southwest logo]()
$233
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/246:20 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Mon 6/298:40 pm
BWI
- ORD
Nonstop2h 24m
United Airlines
Deal found 4/28![United Airlines logo]()
$243
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 5/305:25 pm
MDW
- BWI
Nonstop1h 50m
Southwest
Sat 6/136:15 am
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 4/25![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/256:20 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Mon 5/257:05 pm
BWI
- ORD
Nonstop2h 24m
United Airlines
Deal found 4/26![United Airlines logo]()
$247
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:01 am
ORD
- DCA
1 stop3h 33m
Delta
Sat 6/277:35 pm
DCA
- ORD
1 stop5h 29m
Delta
Deal found 4/28![Delta logo]()
$253
This Southwest deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:35 pm
MDW
- BWI
Nonstop1h 50m
Southwest
Tue 7/71:00 pm
BWI
- MDW
1 stop4h 10m
Southwest
Deal found 4/24![Southwest logo]()
$239
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/136:35 pm
MDW
- IAD
1 stop3h 39m
Delta
Tue 6/166:00 am
IAD
- MDW
1 stop5h 09m
Delta
Deal found 4/28![Delta logo]()
$253
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:30 am
ORD
- DCA
Nonstop1h 45m
United Airlines
Tue 8/181:00 pm
DCA
- ORD
Nonstop2h 04m
United Airlines
Deal found 4/28![United Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/39:10 am
MDW
- BWI
Nonstop1h 50m
Southwest
Fri 6/128:55 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Deal found 4/25![Southwest logo]()
$243
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 5/219:22 am
MDW
- IAD
1 stop6h 32m
Delta
Mon 5/258:05 am
IAD
- MDW
1 stop4h 51m
Delta
Deal found 4/25![Delta logo]()
$259
This United Airlines deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 6/109:40 pm
ORD
- IAD
Nonstop2h 05m
United Airlines
Sun 6/1410:15 pm
IAD
- ORD
Nonstop2h 11m
United Airlines
Deal found 4/25![United Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 6/105:40 am
MDW
- DCA
Nonstop1h 45m
Southwest
Fri 6/199:00 pm
DCA
- MDW
Nonstop2h 00m
Southwest
Deal found 4/26![Southwest logo]()
$243
This Delta deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/310:59 am
MDW
- BWI
1 stop7h 43m
Delta
Fri 6/1212:32 pm
BWI
- MDW
1 stop6h 59m
Delta
Deal found 4/25![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/201:55 pm
MDW
- DCA
1 stop3h 45m
Southwest
Tue 5/263:40 pm
DCA
- MDW
Nonstop2h 10m
Southwest
Deal found 4/26![Southwest logo]()
$245
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/269:55 pm
ORD
- IAD
Nonstop2h 04m
United Airlines
Thu 5/288:15 am
IAD
- ORD
Nonstop2h 21m
United Airlines
Deal found 4/26![United Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 9/2210:35 am
MDW
- BWI
1 stop5h 33m
Delta
Thu 9/246:00 am
BWI
- MDW
1 stop4h 50m
Delta
Deal found 4/26![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:55 am
ORD
- BWI
2 stops7h 45m
Southwest
Wed 6/310:00 am
BWI
- ORD
1 stop9h 25m
Southwest
Deal found 4/25![Southwest logo]()
$258
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/2512:45 pm
ORD
- DCA
Nonstop2h 07m
United Airlines
Sat 6/277:05 pm
DCA
- ORD
Nonstop2h 22m
United Airlines
Deal found 4/28![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 9/2212:15 pm
ORD
- BWI
1 stop4h 54m
Delta
Thu 9/246:00 am
BWI
- ORD
1 stop5h 04m
Delta
Deal found 4/26![Delta logo]()
$263
This United Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/137:40 pm
ORD
- DCA
Nonstop2h 09m
United Airlines
Thu 6/257:30 am
DCA
- ORD
Nonstop2h 17m
United Airlines
Deal found 4/28![United Airlines logo]()
$289
Last-minute flights from Illinois to MarylandDiscover last-minute flight deals from Illinois to Maryland. Data last updated April 29, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Maryland. Data last updated April 29, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 5/911:59 am
MDW
- BWI
1 stop18h 44m
Frontier
Mon 5/119:23 pm
BWI
- MDW
1 stop14h 46m
Frontier
Deal found 4/24![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/235:27 pm
STL
- BWI
2 stops17h 48m
Frontier
Tue 5/269:13 pm
BWI
- STL
1 stop12h 42m
Frontier
Deal found 4/26![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/235:27 pm
STL
- BWI
2 stops17h 48m
Frontier
Sun 5/249:43 pm
BWI
- STL
1 stop12h 12m
Frontier
Deal found 4/26![Frontier logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Tue 6/28:52 am
BWI
- STL
1 stop9h 41m
Frontier
Deal found 4/28![Frontier logo]()
$124
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Fri 6/59:23 pm
BWI
- STL
1 stop12h 32m
Frontier
Deal found 4/29![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/266:33 pm
STL
- BWI
1 stop12h 10m
Multiple Airlines
Tue 6/24:33 pm
BWI
- STL
2 stops17h 22m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Sun 5/319:43 pm
BWI
- STL
1 stop12h 12m
Frontier
Deal found 4/29![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Sat 5/303:26 pm
BWI
- STL
1 stop9h 31m
Frontier
Deal found 4/29![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Fri 5/297:23 pm
BWI
- STL
1 stop14h 32m
Frontier
Deal found 4/27![Frontier logo]()
$169
This United Airlines deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 5/262:25 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Wed 5/277:05 pm
BWI
- ORD
Nonstop2h 24m
United Airlines
Deal found 4/26![United Airlines logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/286:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Sun 5/319:43 pm
BWI
- STL
1 stop12h 12m
Frontier
Deal found 4/27![Frontier logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Fri 6/59:23 pm
BWI
- STL
1 stop12h 32m
Frontier
Deal found 4/29![Frontier logo]()
$171
One-way flights from Illinois to MarylandSearch for one-way flight options from Illinois to Maryland. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
Search for one-way flight options from Illinois to Maryland. Find affordable one-way fares based on user searches. Data last updated April 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/205:27 pm
STL
- IAD
1 stop17h 34m
Frontier
Deal found 4/27![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 6/236:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Deal found 4/28![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” 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 5/196:33 pm
STL
- IAD
1 stop21h 54m
Frontier
Deal found 4/27![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 5/266:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Deal found 4/25![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 6/15:27 pm
STL
- BWI
1 stop13h 16m
Frontier
Deal found 4/26![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 4/25. Clicking the “Pick Dates” 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 5/266:33 pm
STL
- IAD
1 stop14h 39m
Frontier
Deal found 4/25![Frontier logo]()
$68
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 6/26:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Deal found 4/26![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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 6/15:27 pm
STL
- IAD
1 stop15h 45m
Frontier
Deal found 4/26![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 5/286:33 pm
STL
- BWI
1 stop12h 10m
Frontier
Deal found 4/24![Frontier logo]()
$70
This Priceline deal was found by Cheapflights users on 4/26. Clicking the “Pick Dates” 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.
Sat 5/235:27 pm
STL
- IAD
1 stop4h 42m
Frontier
Deal found 4/26![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” 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 5/185:27 pm
STL
- BWI
1 stop28h 30m
Frontier
Deal found 4/28![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 4/24. Clicking the “Pick Dates” 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 5/286:33 pm
STL
- IAD
1 stop14h 39m
Frontier
Deal found 4/24![Frontier logo]()
$71
Find flight deals from Illinois to Maryland
Keep the following information in mind while searching for Illinois to Maryland flight deals. Data was last updated April 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $124 (Kiwi.com) |
One-way from | $63 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $299 |
Good round-trip deal | $233 or less |
Good one-way deal | $139 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Maryland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2026.
Use the filters below to find and compare flights from Illinois to Maryland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Tue 6/2
9:25 pm-12:33 am
Nonstop2h 08m
Baltimore/Washington
Wed 6/3
8:05 pm-9:29 pm
Nonstop2h 24m
$177
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Wed 8/12
7:10 am-11:41 am
1 stop3h 31m
Baltimore/Washington
Tue 8/18
12:00 pm-4:48 pm
1 stop5h 48m
$197
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Wed 5/27
12:50 pm-5:25 pm
1 stop3h 35m
Baltimore/Washington
Thu 5/28
7:10 pm-8:20 pm
Nonstop2h 10m
$218
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Wed 5/27
2:00 pm-10:15 pm
1 stop7h 15m
Baltimore/Washington
Wed 6/3
10:00 am-6:25 pm
1 stop9h 25m
$220
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Thu 5/28
9:49 am-6:28 pm
1 stop7h 39m
Washington, D.C. Reagan-National
Tue 6/2
11:00 am-4:34 pm
1 stop6h 34m
$228
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Thu 5/21
7:00 am-11:32 am
1 stop3h 32m
Washington, D.C. Reagan-National
Wed 6/24
12:17 pm-5:04 pm
1 stop5h 47m
$228
ChicagoWashington, D.C.
ORD - IAD
ORDIAD
Chicago O'Hare Intl
Tue 5/19
5:30 am-11:42 am
1 stop5h 12m
Washington, D.C. Dulles Intl
Mon 5/25
6:08 am-10:16 am
1 stop5h 08m
$228
ChicagoWashington, D.C.
ORD - IAD
ORDIAD
Chicago O'Hare Intl
Thu 6/18
3:53 pm-7:02 pm
Nonstop2h 09m
Washington, D.C. Dulles Intl
Tue 6/30
3:30 pm-4:53 pm
Nonstop2h 23m
$233
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Tue 6/2
7:00 am-9:50 am
Nonstop1h 50m
Baltimore/Washington
Wed 6/3
6:30 am-7:35 am
Nonstop2h 05m
$233
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Tue 6/2
11:55 am-8:45 pm
2 stops7h 50m
Washington, D.C. Reagan-National
Wed 6/3
9:05 am-12:50 pm
1 stop4h 45m
$233
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Maryland
Have a flexible travel schedule? Discover the best time to fly to Maryland from Illinois with our price prediction graph.
MDW-BWI
ORD-BWI
ORD-DCA
MDW-IAD
MDW-PHL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to Maryland
USIL-USMD
MDW-BWI
ORD-BWI
ORD-DCA
MDW-IAD
How far ahead should I book a flight from Illinois to Maryland?
To ensure you get the cheapest price possible for a flight from Illinois to Maryland, you should look to book at least 12 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Illinois to Maryland?
Currently, February is the cheapest month in which you can book a flight from Illinois to Maryland (average of $27). Flying from Illinois to Maryland in October is currently the most expensive (average of $555). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to MD?
Find hourly flight availability from Illinois to Maryland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2026.
It’s typically best to fly out from Illinois to Maryland at noon. Doing so could potentially save you 27% on the flight price compared to flying in the evening, which is usually more expensive.
What is the cheapest day to fly from Illinois to Maryland?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Maryland. Price data was last updated on April 25, 2026.
Travelers seeking maximum savings on their Illinois to Maryland flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Illinois to Maryland
Explore weekly flight availability from Illinois to Maryland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 29, 2026.
The most flights from USIL to USMD are scheduled on a Tuesday (21 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Illinois to Maryland?
Reviews of airlines servicing Maryland
Get insights into the airlines that provide service to Maryland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Maryland. Reviews last updated April 29, 2026.
Read through reviews of airlines operating flights from Illinois to Maryland, such as Southwest,United Airlines, andAmerican Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Food
7.0
Crew
8.6
Overall
8.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Illinois to Maryland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to Maryland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Maryland by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Maryland by cabin class
Find flights from Illinois to Maryland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Maryland flights
Browse other Illinois and Maryland flight options. Last updated on April 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Maryland
Find the right flight back to Illinois after your stay in Maryland
Illinois to Maryland flights
Consider these flights traveling from Illinois to Maryland.
Top 6 airlines flying from Illinois to Maryland
Discover the top 6 airlines that operate flights from Illinois to Maryland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$42 | Average$119 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$57 | Average$160 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$114 | Average$370 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$127 | Average$269 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$148 | Average$413 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$183 | Average$361 | FlexibilityNo cancel fee | On-timeN/A |