$75+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
Jul 24 — Jul 311
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 June 24, 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 June 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Wed 7/154:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Tue 7/288:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/19![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 7/146:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Tue 7/218:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/19![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Mon 7/134:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Wed 7/229:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/19![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/154:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Wed 7/229:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/20![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 8/84:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Mon 8/107:21 pm
BWI
- STL
1 stop23h 16m
Frontier
Deal found 6/22![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/216:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Sat 7/259:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/23![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 10/2910:35 am
STL
- BWI
1 stop7h 01m
Frontier
Tue 11/39:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 6/20![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/174:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Thu 8/278:45 am
BWI
- STL
1 stop9h 37m
Frontier
Deal found 6/20![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/146:34 pm
STL
- BWI
1 stop20h 00m
Frontier
Sat 7/189:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/21![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/216:17 pm
STL
- BWI
1 stop12h 09m
Frontier
Sun 8/238:45 am
BWI
- STL
1 stop9h 37m
Frontier
Deal found 6/23![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Mon 7/134:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Sun 7/199:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/19![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/146:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Sun 7/199:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/20![Frontier logo]()
$174
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 June 24, 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 June 24, 2026.
This JetBlue deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:15 pm
ORD
- PHL
1 stop7h 17m
JetBlue
Mon 9/1410:45 am
PHL
- ORD
1 stop9h 37m
JetBlue
Deal found 6/22![JetBlue logo]()
$219
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/294:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Tue 8/189:32 pm
BWI
- STL
2 stops43h 39m
Frontier
Deal found 6/23![Frontier logo]()
$226
This United Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/219:20 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Thu 7/238:16 am
BWI
- ORD
Nonstop2h 14m
United Airlines
Deal found 6/23![United Airlines logo]()
$243
This Southwest deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:55 am
MDW
- DCA
Nonstop1h 45m
Southwest
Fri 8/76:40 pm
DCA
- MDW
Nonstop1h 55m
Southwest
Deal found 6/23![Southwest logo]()
$243
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/255:18 pm
ORD
- IAD
1 stop4h 55m
Delta
Mon 7/277:26 pm
IAD
- ORD
1 stop5h 27m
Delta
Deal found 6/22![Delta logo]()
$257
This CheapOair deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/111:09 pm
ORD
- PHL
1 stop5h 51m
Multiple Airlines
Wed 7/158:30 am
PHL
- ORD
1 stop12h 23m
Multiple Airlines
Deal found 6/23![Multiple Airlines logo]()
$309
This American Airlines deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/115:07 pm
ORD
- PHL
Nonstop2h 18m
American Airlines
Wed 7/157:42 am
PHL
- ORD
Nonstop2h 28m
American Airlines
Deal found 6/23![American Airlines logo]()
$341
This Southwest deal was found by Cheapflights users on 6/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/106:45 am
MDW
- BWI
2 stops6h 35m
Southwest
Tue 10/135:05 pm
BWI
- MDW
1 stop3h 35m
Southwest
Deal found 6/19![Southwest logo]()
$246
This JetBlue deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/310:56 am
ORD
- DCA
1 stop8h 00m
JetBlue
Sun 9/62:00 pm
DCA
- ORD
1 stop6h 25m
JetBlue
Deal found 6/20![JetBlue logo]()
$248
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/82:30 pm
ORD
- PHL
Nonstop2h 23m
United Airlines
Tue 8/116:56 pm
PHL
- ORD
Nonstop2h 30m
United Airlines
Deal found 6/20![United Airlines logo]()
$253
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/215:30 am
ORD
- IAD
1 stop5h 07m
Delta
Mon 7/277:26 pm
IAD
- ORD
1 stop5h 27m
Delta
Deal found 6/23![Delta logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/298:08 pm
STL
- BWI
2 stops18h 26m
Frontier
Thu 8/208:45 am
BWI
- STL
1 stop9h 37m
Frontier
Deal found 6/23![Frontier logo]()
$272
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/85:55 am
MDW
- BWI
Nonstop1h 45m
Southwest
Mon 8/1012:10 pm
BWI
- MDW
1 stop4h 20m
Southwest
Deal found 6/21![Southwest logo]()
$248
This United Airlines deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 8/152:30 pm
ORD
- PHL
Nonstop2h 24m
United Airlines
Sat 8/2210:34 am
PHL
- ORD
Nonstop2h 25m
United Airlines
Deal found 6/20![United Airlines logo]()
$253
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/257:05 am
ORD
- DCA
1 stop3h 23m
Delta
Fri 7/317:37 pm
DCA
- ORD
1 stop5h 16m
Delta
Deal found 6/22![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:45 am
MDW
- BWI
1 stop3h 15m
Southwest
Mon 8/1711:45 am
BWI
- MDW
1 stop4h 10m
Southwest
Deal found 6/21![Southwest logo]()
$249
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/259:20 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Wed 7/296:15 am
BWI
- ORD
Nonstop2h 15m
United Airlines
Deal found 6/22![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 6/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:30 am
ORD
- DCA
1 stop4h 57m
Delta
Tue 8/46:30 pm
DCA
- ORD
1 stop6h 27m
Delta
Deal found 6/19![Delta logo]()
$265
This Frontier deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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.
Sat 7/118:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Wed 7/1512:44 pm
PHL
- ORD
1 stop9h 08m
Frontier
Deal found 6/23![Frontier logo]()
$293
This Southwest deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/141:10 pm
MDW
- PHL
Nonstop2h 00m
Southwest
Tue 7/216:40 pm
PHL
- MDW
Nonstop2h 25m
Southwest
Deal found 6/21![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/226:20 pm
ORD
- BWI
Nonstop2h 06m
United Airlines
Wed 7/296:15 am
BWI
- ORD
Nonstop2h 15m
United Airlines
Deal found 6/21![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 9/171:00 pm
MDW
- IAD
1 stop4h 21m
Delta
Mon 9/2110:15 am
IAD
- MDW
1 stop7h 01m
Delta
Deal found 6/21![Delta logo]()
$265
This Southwest deal was found by Cheapflights users on 6/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2110:00 am
MDW
- DCA
1 stop5h 10m
Southwest
Fri 7/247:05 pm
DCA
- MDW
Nonstop2h 10m
Southwest
Deal found 6/19![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 8/187:00 am
ORD
- BWI
Nonstop2h 09m
United Airlines
Sat 8/221:00 pm
BWI
- ORD
Nonstop2h 21m
United Airlines
Deal found 6/21![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/276:42 pm
MDW
- IAD
1 stop3h 44m
Delta
Mon 8/315:47 pm
IAD
- MDW
1 stop5h 49m
Delta
Deal found 6/23![Delta logo]()
$265
This United Airlines deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/2212:45 pm
ORD
- DCA
Nonstop2h 07m
United Airlines
Wed 7/291:00 pm
DCA
- ORD
Nonstop2h 19m
United Airlines
Deal found 6/21![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 9/56:40 am
ORD
- PHL
1 stop5h 04m
Delta
Sun 9/67:25 am
PHL
- ORD
1 stop6h 15m
Delta
Deal found 6/22![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/15:55 pm
MDW
- PHL
Nonstop2h 05m
Southwest
Sat 8/88:05 am
PHL
- MDW
Nonstop2h 05m
Southwest
Deal found 6/22![Southwest logo]()
$269
This Delta deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 9/31:50 pm
ORD
- IAD
1 stop6h 05m
Delta
Sun 9/68:28 am
IAD
- ORD
1 stop6h 52m
Delta
Deal found 6/21![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 9/910:50 am
ORD
- IAD
Nonstop2h 05m
United Airlines
Sun 9/1310:27 pm
IAD
- ORD
Nonstop2h 13m
United Airlines
Deal found 6/22![United Airlines logo]()
$268
Last-minute flights from Illinois to MarylandDiscover last-minute flight deals from Illinois to Maryland. Data last updated June 24, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Maryland. Data last updated June 24, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Mon 7/134:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Wed 7/229:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/19![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Mon 7/134:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Sun 7/199:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/19![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 6/19. 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 7/146:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Tue 7/218:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/19![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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 7/146:34 pm
STL
- BWI
1 stop20h 00m
Frontier
Sat 7/189:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/21![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/146:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Sun 7/199:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/20![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Wed 7/154:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Tue 7/288:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/19![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/154:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Wed 7/229:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/20![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/174:57 pm
STL
- BWI
1 stop24h 36m
Frontier
Thu 7/239:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/23![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Fri 7/174:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Tue 7/218:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/19![Frontier logo]()
$176
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/204:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Thu 7/309:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/20![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/216:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Sat 7/259:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/23![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 7/216:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Thu 7/238:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/20![Frontier logo]()
$181
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 June 24, 2026.
Search for one-way flight options from Illinois to Maryland. Find affordable one-way fares based on user searches. Data last updated June 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/216:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Deal found 6/23![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 7/204:57 pm
STL
- BWI
1 stop21h 37m
Frontier
Deal found 6/23![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Wed 7/154:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Deal found 6/19![Frontier logo]()
$77
This Trip.com deal was found by Cheapflights users on 6/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:34 pm
STL
- BWI
1 stop27h 43m
Frontier
Deal found 6/19![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 6/22. Clicking the “Pick Dates” 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 7/174:57 pm
STL
- IAD
1 stop22h 37m
Frontier
Deal found 6/22![Frontier logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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 9/1410:35 am
STL
- BWI
1 stop28h 37m
Frontier
Deal found 6/20![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 8/96:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Deal found 6/23![Frontier logo]()
$90
This Super.com deal was found by Cheapflights users on 6/20. Clicking the “Pick Dates” 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.
Sat 7/181:09 pm
ORD
- PHL
1 stop5h 51m
JetBlue
Deal found 6/20![JetBlue logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 6/23. Clicking the “Pick Dates” 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 9/2010:35 am
STL
- BWI
1 stop20h 54m
Frontier
Deal found 6/23![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 6/19. 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.
Fri 7/38:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Deal found 6/19![Frontier logo]()
$92
This JetBlue deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:01 am
ORD
- PHL
1 stop8h 00m
JetBlue
Deal found 6/21![JetBlue logo]()
$94
This Expedia deal was found by Cheapflights users on 6/21. Clicking the “Pick Dates” 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.
Tue 8/1810:56 am
ORD
- PHL
1 stop8h 04m
JetBlue
Deal found 6/21![JetBlue logo]()
$95
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 June 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $143 (Kiwi.com) |
One-way from | $75 (Kiwi.com) |
Popular in | June |
Cheapest in | August |
Average price | $377 |
Good round-trip deal | $311 or less |
Good one-way deal | $154 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 June 24, 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
ChicagoPhiladelphia
ORD - PHL
ORDPHL
Chicago O'Hare Intl
Fri 9/11
2:15 pm-10:32 pm
1 stop7h 17m
Philadelphia
Mon 9/14
10:45 am-7:22 pm
1 stop9h 37m
$219
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Wed 7/29
4:57 pm-11:17 pm
1 stop5h 20m
Baltimore/Washington
Tue 8/18
9:32 pm-4:11 pm
2 stops43h 39m
$226
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Tue 7/21
9:20 pm-12:28 am
Nonstop2h 08m
Baltimore/Washington
Thu 7/23
8:16 am-9:30 am
Nonstop2h 14m
$243
Quickest round-trip
ChicagoWashington, D.C.
MDW - DCA
MDWDCA
Chicago Midway
Sat 8/1
5:55 am-8:40 am
Nonstop1h 45m
Washington, D.C. Reagan-National
Fri 8/7
6:40 pm-7:35 pm
Nonstop1h 55m
$243
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Sat 10/10
6:45 am-2:20 pm
2 stops6h 35m
Baltimore/Washington
Tue 10/13
5:05 pm-7:40 pm
1 stop3h 35m
$246
ChicagoWashington, D.C.
ORD - DCA
ORDDCA
Chicago O'Hare Intl
Thu 9/3
10:56 am-7:56 pm
1 stop8h 00m
Washington, D.C. Reagan-National
Sun 9/6
2:00 pm-7:25 pm
1 stop6h 25m
$248
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Sat 8/8
5:55 am-8:40 am
Nonstop1h 45m
Baltimore/Washington
Mon 8/10
12:10 pm-3:30 pm
1 stop4h 20m
$248
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Sat 8/15
11:45 am-4:00 pm
1 stop3h 15m
Baltimore/Washington
Mon 8/17
11:45 am-2:55 pm
1 stop4h 10m
$249
ChicagoPhiladelphia
ORD - PHL
ORDPHL
Chicago O'Hare Intl
Sat 8/8
2:30 pm-5:53 pm
Nonstop2h 23m
Philadelphia
Tue 8/11
6:56 pm-8:26 pm
Nonstop2h 30m
$253
ChicagoPhiladelphia
ORD - PHL
ORDPHL
Chicago O'Hare Intl
Sat 8/15
2:30 pm-5:54 pm
Nonstop2h 24m
Philadelphia
Sat 8/22
10:34 am-11:59 am
Nonstop2h 25m
$253
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.
STL-BWI
MDW-DCA
ORD-DCA
MDW-IAD
STL-IAD
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
STL-BWI
MDW-DCA
ORD-DCA
MDW-IAD
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 $519). 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 June 24, 2026.
It’s typically best to fly out from Illinois to Maryland at noon. Doing so could potentially save you 28% on the flight price compared to flying in the evening, which is usually more expensive.
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 June 24, 2026.
The most flights from USIL to USMD are scheduled on a Wednesday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Illinois to Maryland?
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 73 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 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 June 20, 2026.
Travelers seeking maximum savings on their Illinois to Maryland flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 June 24, 2026.
Read through reviews of airlines operating flights from Illinois to Maryland, such as Southwest,Delta, andUnited Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
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
Toggle through the tabs below to find thousands of 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 June 24, 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 5 airlines flying from Illinois to Maryland
Discover the top 5 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 June 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$162 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$400 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$149 | Average$389 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$269 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$183 | Average$344 | FlexibilityNo cancel fee | On-timeN/A |