$57+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
Aug 29 — Sep 51
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Maryland with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 July 30, 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 July 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 10/22:29 pm
STL
- PHL
1 stop7h 49m
Frontier
Mon 10/58:41 am
PHL
- STL
1 stop5h 29m
Frontier
Deal found 7/29![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/206:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Mon 8/248:30 am
PHL
- STL
1 stop9h 52m
Frontier
Deal found 7/29![Frontier logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/276:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Sun 8/304:45 pm
PHL
- STL
1 stop25h 37m
Frontier
Deal found 7/28![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 10/1510:35 am
STL
- PHL
1 stop20h 01m
Frontier
Tue 10/205:38 pm
PHL
- STL
1 stop17h 02m
Frontier
Deal found 7/29![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 10/1610:35 am
STL
- PHL
1 stop6h 40m
Frontier
Tue 10/205:38 pm
PHL
- STL
1 stop17h 02m
Frontier
Deal found 7/29![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 10/910:35 am
STL
- PHL
1 stop6h 40m
Frontier
Mon 10/125:38 pm
PHL
- STL
1 stop17h 02m
Frontier
Deal found 7/29![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/246:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Mon 8/318:30 am
PHL
- STL
1 stop9h 52m
Frontier
Deal found 7/27![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 10/810:35 am
STL
- PHL
1 stop6h 40m
Frontier
Mon 10/125:38 pm
PHL
- STL
1 stop17h 02m
Frontier
Deal found 7/29![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Fri 10/2310:35 am
STL
- PHL
1 stop6h 40m
Frontier
Sat 10/245:38 pm
PHL
- STL
1 stop17h 02m
Frontier
Deal found 7/28![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Sat 10/1010:35 am
STL
- PHL
1 stop11h 46m
Frontier
Mon 10/125:38 pm
PHL
- STL
1 stop17h 02m
Frontier
Deal found 7/29![Frontier logo]()
$165
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:00 am
MDW
- BWI
Nonstop1h 55m
Southwest
Mon 8/245:20 pm
BWI
- MDW
Nonstop1h 55m
Southwest
Deal found 7/29![Southwest logo]()
$177
This United Airlines deal was found by Cheapflights users on 7/28. 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 8/276:15 pm
ORD
- BWI
Nonstop2h 14m
United Airlines
Mon 8/3110:25 am
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 7/28![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 July 30, 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 July 30, 2026.
This Southwest deal was found by Cheapflights users on 7/28. 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.
Thu 9/310:30 am
MDW
- BWI
Nonstop1h 45m
Southwest
Mon 9/76:30 am
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 7/28![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 7/28. 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.
Mon 8/246:42 pm
MDW
- BWI
1 stop3h 31m
Delta
Thu 8/278:18 am
BWI
- MDW
1 stop4h 33m
Delta
Deal found 7/28![Delta logo]()
$197
This Frontier deal was found by Cheapflights users on 7/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:19 am
ORD
- IAD
1 stop9h 21m
Frontier
Sat 8/158:33 pm
IAD
- ORD
1 stop12h 29m
Frontier
Deal found 7/24![Frontier logo]()
$220
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Fri 9/46:00 am
ORD
- DCA
Nonstop1h 55m
United Airlines
Mon 9/76:30 am
DCA
- ORD
Nonstop2h 14m
United Airlines
Deal found 7/24![United Airlines logo]()
$248
This JetBlue deal was found by Cheapflights users on 7/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/219:38 am
ORD
- PHL
1 stop7h 10m
JetBlue
Sat 10/1010:45 am
PHL
- ORD
1 stop9h 37m
JetBlue
Deal found 7/24![JetBlue logo]()
$249
This American Airlines deal was found by Cheapflights users on 7/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:41 pm
ORD
- DCA
1 stop4h 18m
American Airlines
Mon 9/78:43 pm
DCA
- ORD
Nonstop2h 28m
American Airlines
Deal found 7/24![American Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:00 am
MDW
- BWI
Nonstop1h 55m
Southwest
Mon 8/245:20 pm
BWI
- MDW
Nonstop1h 55m
Southwest
Deal found 7/29![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:30 pm
ORD
- BWI
1 stop5h 58m
Delta
Tue 9/85:10 pm
BWI
- ORD
1 stop4h 46m
Delta
Deal found 7/29![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 7/27. 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.
Mon 9/287:30 am
MDW
- BWI
Nonstop1h 45m
Southwest
Wed 9/3011:20 am
BWI
- MDW
1 stop3h 30m
Southwest
Deal found 7/27![Southwest logo]()
$183
This Delta deal was found by Cheapflights users on 7/26. 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.
Wed 9/97:05 am
ORD
- BWI
1 stop3h 40m
Delta
Wed 9/1612:30 pm
BWI
- ORD
1 stop4h 43m
Delta
Deal found 7/26![Delta logo]()
$197
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:55 pm
MDW
- BWI
Nonstop1h 55m
Southwest
Mon 9/287:15 pm
BWI
- MDW
1 stop4h 10m
Southwest
Deal found 7/29![Southwest logo]()
$187
This Delta deal was found by Cheapflights users on 7/26. 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.
Sat 10/101:23 pm
ORD
- BWI
1 stop5h 57m
Delta
Thu 10/1510:21 am
BWI
- ORD
1 stop5h 07m
Delta
Deal found 7/26![Delta logo]()
$197
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Fri 9/410:50 am
ORD
- IAD
Nonstop2h 05m
United Airlines
Mon 9/76:16 am
IAD
- ORD
Nonstop2h 14m
United Airlines
Deal found 7/24![United Airlines logo]()
$248
This JetBlue deal was found by Cheapflights users on 7/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:38 am
ORD
- PHL
1 stop7h 10m
JetBlue
Sat 10/1010:45 am
PHL
- ORD
1 stop9h 37m
JetBlue
Deal found 7/24![JetBlue logo]()
$249
This Southwest deal was found by Cheapflights users on 7/26. 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 9/98:30 am
MDW
- BWI
1 stop4h 05m
Southwest
Wed 9/1611:20 am
BWI
- MDW
1 stop3h 30m
Southwest
Deal found 7/26![Southwest logo]()
$188
This CheapOair deal was found by Cheapflights users on 7/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/272:41 pm
ORD
- DCA
1 stop21h 10m
Frontier
Mon 8/311:59 pm
DCA
- ORD
1 stop24h 37m
Frontier
Deal found 7/24![Frontier logo]()
$251
This Delta deal was found by Cheapflights users on 7/28. 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 8/196:59 am
ORD
- BWI
1 stop3h 43m
Delta
Tue 8/255:36 pm
BWI
- ORD
1 stop3h 54m
Delta
Deal found 7/28![Delta logo]()
$197
This JetBlue deal was found by Cheapflights users on 7/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:01 am
ORD
- PHL
1 stop7h 59m
JetBlue
Tue 9/1510:42 am
PHL
- ORD
1 stop9h 19m
JetBlue
Deal found 7/24![JetBlue logo]()
$249
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:05 am
MDW
- BWI
1 stop3h 45m
Southwest
Sat 9/191:55 pm
BWI
- MDW
1 stop4h 20m
Southwest
Deal found 7/29![Southwest logo]()
$188
This American Airlines deal was found by Cheapflights users on 7/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
STL
- PHL
Nonstop2h 22m
American Airlines
Mon 8/2410:01 pm
PHL
- STL
Nonstop2h 33m
American Airlines
Deal found 7/24![American Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 7/27. 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.
Wed 8/267:00 am
ORD
- BWI
Nonstop2h 09m
United Airlines
Wed 9/210:25 am
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 7/27![United Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 7/26. 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.
Wed 8/195:30 am
ORD
- BWI
1 stop6h 35m
Delta
Mon 8/246:20 pm
BWI
- ORD
1 stop6h 37m
Delta
Deal found 7/26![Delta logo]()
$197
This JetBlue deal was found by Cheapflights users on 7/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:38 am
ORD
- PHL
1 stop7h 10m
JetBlue
Tue 10/610:42 am
PHL
- ORD
1 stop9h 21m
JetBlue
Deal found 7/24![JetBlue logo]()
$249
This Southwest deal was found by Cheapflights users on 7/28. 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.
Sat 9/199:05 am
MDW
- BWI
1 stop3h 45m
Southwest
Mon 9/214:35 pm
BWI
- MDW
1 stop4h 15m
Southwest
Deal found 7/28![Southwest logo]()
$192
This United Airlines deal was found by Cheapflights users on 7/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:00 am
ORD
- BWI
Nonstop2h 09m
United Airlines
Thu 8/275:40 pm
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 7/29![United Airlines logo]()
$257
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 9/38:30 pm
ORD
- BWI
2 stops20h 13m
Frontier
Mon 9/79:32 pm
BWI
- ORD
1 stop23h 36m
Frontier
Deal found 7/29![Frontier logo]()
$287
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/35:20 pm
ORD
- BWI
1 stop4h 53m
Delta
Mon 9/76:00 am
BWI
- ORD
1 stop5h 13m
Delta
Deal found 7/29![Delta logo]()
$197
This JetBlue deal was found by Cheapflights users on 7/24. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:38 am
ORD
- PHL
1 stop7h 10m
JetBlue
Mon 10/510:42 am
PHL
- ORD
1 stop9h 21m
JetBlue
Deal found 7/24![JetBlue logo]()
$249
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2312:40 pm
MDW
- BWI
1 stop3h 20m
Southwest
Mon 9/287:15 pm
BWI
- MDW
1 stop4h 10m
Southwest
Deal found 7/29![Southwest logo]()
$192
This United Airlines deal was found by Cheapflights users on 7/25. 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.
Sat 10/102:30 pm
ORD
- PHL
Nonstop2h 24m
United Airlines
Mon 10/125:08 pm
PHL
- ORD
Nonstop2h 30m
United Airlines
Deal found 7/25![United Airlines logo]()
$257
Last-minute flights from Illinois to MarylandDiscover last-minute flight deals from Illinois to Maryland. Data last updated July 30, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Maryland. Data last updated July 30, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/206:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Mon 8/248:30 am
PHL
- STL
1 stop9h 52m
Frontier
Deal found 7/29![Frontier logo]()
$147
This Southwest deal was found by Cheapflights users on 7/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:00 am
MDW
- BWI
Nonstop1h 55m
Southwest
Mon 8/245:20 pm
BWI
- MDW
Nonstop1h 55m
Southwest
Deal found 7/29![Southwest logo]()
$177
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/206:00 am
ORD
- PHL
Nonstop2h 17m
Frontier
Mon 8/242:45 pm
PHL
- ORD
1 stop6h 14m
Frontier
Deal found 7/29![Frontier logo]()
$177
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/208:52 pm
ORD
- BWI
Nonstop2h 07m
American Airlines
Mon 8/247:03 am
BWI
- ORD
Nonstop2h 27m
American Airlines
Deal found 7/28![American Airlines logo]()
$178
This Frontier deal was found by Cheapflights users on 7/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/227:11 am
ORD
- BWI
1 stop9h 32m
Frontier
Thu 8/275:08 pm
BWI
- ORD
Nonstop2h 31m
Frontier
Deal found 7/29![Frontier logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 8/246:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Mon 8/318:30 am
PHL
- STL
1 stop9h 52m
Frontier
Deal found 7/27![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 8/246:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Fri 8/288:30 am
PHL
- STL
1 stop9h 52m
Frontier
Deal found 7/28![Frontier logo]()
$166
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Mon 8/248:37 am
ORD
- PHL
Nonstop2h 15m
Frontier
Fri 8/288:30 am
PHL
- ORD
1 stop12h 29m
Frontier
Deal found 7/29![Frontier logo]()
$178
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Thu 8/276:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Sun 8/304:45 pm
PHL
- STL
1 stop25h 37m
Frontier
Deal found 7/28![Frontier logo]()
$154
This United Airlines deal was found by Cheapflights users on 7/28. 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 8/276:15 pm
ORD
- BWI
Nonstop2h 14m
United Airlines
Mon 8/3110:25 am
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 7/28![United Airlines logo]()
$177
This Frontier deal was found by Cheapflights users on 7/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/271:03 pm
ORD
- BWI
Nonstop2h 10m
Frontier
Tue 9/112:09 pm
BWI
- ORD
1 stop11h 59m
Frontier
Deal found 7/28![Frontier logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Fri 8/286:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Sun 8/304:45 pm
PHL
- STL
1 stop25h 37m
Frontier
Deal found 7/28![Frontier logo]()
$169
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 July 30, 2026.
Search for one-way flight options from Illinois to Maryland. Find affordable one-way fares based on user searches. Data last updated July 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 10/2610:35 am
STL
- PHL
1 stop25h 37m
Frontier
Deal found 7/26![Frontier logo]()
$57
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Wed 10/2810:35 am
STL
- PHL
1 stop6h 40m
Frontier
Deal found 7/28![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 7/25. 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 10/2710:35 am
STL
- PHL
1 stop6h 40m
Frontier
Deal found 7/25![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 10/1510:35 am
STL
- IAD
1 stop6h 01m
Frontier
Deal found 7/27![Frontier logo]()
$69
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Wed 9/302:29 pm
STL
- IAD
1 stop25h 49m
Frontier
Deal found 7/26![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Mon 9/282:29 pm
STL
- PHL
1 stop15h 47m
Frontier
Deal found 7/29![Frontier logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 8/276:17 pm
STL
- PHL
1 stop11h 58m
Frontier
Deal found 7/29![Frontier logo]()
$75
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 8/286:17 pm
STL
- IAD
1 stop21h 57m
Frontier
Deal found 7/29![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 10/3010:35 am
STL
- PHL
1 stop6h 40m
Frontier
Deal found 7/29![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 9/92:29 pm
STL
- IAD
1 stop25h 49m
Frontier
Deal found 7/27![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
Fri 9/252:29 pm
STL
- PHL
1 stop7h 49m
Frontier
Deal found 7/29![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Fri 10/3010:35 am
STL
- IAD
1 stop6h 01m
Frontier
Deal found 7/27![Frontier logo]()
$81
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 July 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $146 (Kiwi.com) |
One-way from | $57 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $334 |
Good round-trip deal | $226 or less |
Good one-way deal | $188 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 July 30, 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
Quickest round-trip
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Thu 9/3
10:30 am-1:15 pm
Nonstop1h 45m
Baltimore/Washington
Mon 9/7
6:30 am-7:30 am
Nonstop2h 00m
$177
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Thu 8/20
9:00 am-11:55 am
Nonstop1h 55m
Baltimore/Washington
Mon 8/24
5:20 pm-6:15 pm
Nonstop1h 55m
$177
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Mon 9/28
7:30 am-10:15 am
Nonstop1h 45m
Baltimore/Washington
Wed 9/30
11:20 am-1:50 pm
1 stop3h 30m
$183
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Thu 9/24
7:55 pm-10:50 pm
Nonstop1h 55m
Baltimore/Washington
Mon 9/28
7:15 pm-10:25 pm
1 stop4h 10m
$187
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Wed 9/9
8:30 am-1:35 pm
1 stop4h 05m
Baltimore/Washington
Wed 9/16
11:20 am-1:50 pm
1 stop3h 30m
$188
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Sat 9/5
9:05 am-1:50 pm
1 stop3h 45m
Baltimore/Washington
Sat 9/19
1:55 pm-5:15 pm
1 stop4h 20m
$188
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Sat 9/19
9:05 am-1:50 pm
1 stop3h 45m
Baltimore/Washington
Mon 9/21
4:35 pm-7:50 pm
1 stop4h 15m
$192
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Wed 9/23
12:40 pm-5:00 pm
1 stop3h 20m
Baltimore/Washington
Mon 9/28
7:15 pm-10:25 pm
1 stop4h 10m
$192
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Mon 8/24
6:42 pm-11:13 pm
1 stop3h 31m
Baltimore/Washington
Thu 8/27
8:18 am-11:51 am
1 stop4h 33m
$197
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Sat 9/5
2:30 pm-9:28 pm
1 stop5h 58m
Baltimore/Washington
Tue 9/8
5:10 pm-8:56 pm
1 stop4h 46m
$197
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-PHL
MDW-BWI
ORD-BWI
ORD-PHL
ORD-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-PHL
MDW-BWI
ORD-BWI
ORD-PHL
What is the cheapest month to book a flight from Illinois to Maryland?
Currently, September is the cheapest month in which you can book a flight from Illinois to Maryland (average of $180). Flying from Illinois to Maryland in July is currently the most expensive (average of $362). 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 July 30, 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 July 30, 2026.
The most flights from USIL to USMD are scheduled on a Tuesday (24 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 Illinois to Maryland?
Airfare is typical for this route at the moment.
Illinois to Maryland flights typically cost between $150 and $316 in August.The cheapest round-trip price found within the last 5 days was $177 on United Airlines (Aug 27-Aug 31).
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 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 July 25, 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. Monday 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 July 30, 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.
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
Food
7.0
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
10.0
ExcellentJoseph,Sep 2023
LAX - BWI
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 July 30, 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 July 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$165 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$149 | Average$360 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$279 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$177 | Average$399 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$293 | Average$356 | FlexibilityNo cancel fee | On-timeN/A |