$76+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
Jul 4 — Jul 111
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Maryland
Cheapest
Best
Last-minute
One-way
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 4, 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 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/184:10 pm
STL
- BWI
1 stop27h 54m
Frontier
Thu 8/278:52 am
BWI
- STL
1 stop9h 38m
Frontier
Deal found 6/3![Frontier logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/184:10 pm
STL
- BWI
1 stop27h 54m
Frontier
Tue 8/256:57 pm
BWI
- STL
1 stop20h 51m
Frontier
Deal found 6/3![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/195:33 pm
STL
- BWI
1 stop13h 12m
Frontier
Mon 8/249:32 pm
BWI
- STL
1 stop20h 58m
Frontier
Deal found 6/3![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/195:33 pm
STL
- BWI
1 stop13h 12m
Frontier
Tue 8/256:57 pm
BWI
- STL
1 stop20h 51m
Frontier
Deal found 6/3![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/124:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Wed 8/193:09 pm
BWI
- STL
1 stop10h 05m
Frontier
Deal found 6/3![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 7/215:21 pm
BWI
- STL
1 stop7h 38m
Frontier
Deal found 6/3![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 9/2610:35 am
STL
- BWI
1 stop7h 01m
Frontier
Tue 9/299:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 6/3![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/144:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Wed 8/193:09 pm
BWI
- STL
1 stop10h 05m
Frontier
Deal found 6/3![Frontier logo]()
$170
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 8/14:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Mon 8/249:32 pm
BWI
- STL
1 stop20h 58m
Frontier
Deal found 6/2![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 9/14:10 pm
STL
- BWI
1 stop15h 56m
Frontier
Tue 9/159:20 pm
BWI
- STL
1 stop13h 20m
Frontier
Deal found 6/3![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/113:41 pm
STL
- BWI
1 stop20h 59m
Frontier
Tue 8/183:09 pm
BWI
- STL
1 stop10h 05m
Frontier
Deal found 6/3![Frontier logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/315:33 pm
STL
- BWI
1 stop13h 12m
Frontier
Tue 9/157:31 pm
BWI
- STL
1 stop15h 09m
Frontier
Deal found 6/3![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 4, 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 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/113:41 pm
STL
- BWI
1 stop20h 59m
Frontier
Wed 8/193:09 pm
BWI
- STL
1 stop10h 05m
Frontier
Deal found 6/3![Frontier logo]()
$150
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/37:00 pm
MDW
- BWI
Nonstop1h 55m
Southwest
Tue 7/76:30 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Deal found 6/3![Southwest logo]()
$239
This Delta deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/82:27 pm
ORD
- BWI
1 stop6h 01m
Delta
Tue 8/116:15 am
BWI
- ORD
1 stop5h 27m
Delta
Deal found 5/30![Delta logo]()
$241
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 8/73:53 pm
ORD
- IAD
Nonstop2h 09m
United Airlines
Tue 8/111:13 pm
IAD
- ORD
Nonstop2h 17m
United Airlines
Deal found 6/1![United Airlines logo]()
$253
This KAYAK deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/76:29 am
ORD
- PHL
1 stop5h 15m
American Airlines
Sat 6/133:50 pm
PHL
- ORD
1 stop4h 55m
American Airlines
Deal found 5/31![American Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 8/126:51 am
ORD
- BWI
1 stop3h 51m
Delta
Mon 8/176:15 am
BWI
- ORD
1 stop5h 27m
Delta
Deal found 5/30![Delta logo]()
$241
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/208:10 pm
MDW
- DCA
Nonstop1h 55m
Southwest
Wed 7/229:30 pm
DCA
- MDW
Nonstop2h 05m
Southwest
Deal found 6/2![Southwest logo]()
$247
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 10/217:10 am
ORD
- BWI
1 stop4h 54m
Delta
Sat 10/245:30 pm
BWI
- ORD
1 stop3h 54m
Delta
Deal found 6/2![Delta logo]()
$241
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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.
Sun 8/96:30 am
ORD
- BWI
Nonstop1h 57m
United Airlines
Tue 8/1110:25 am
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 6/3![United Airlines logo]()
$273
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 10/277:50 am
MDW
- BWI
1 stop4h 00m
Southwest
Wed 10/289:45 am
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 6/2![Southwest logo]()
$249
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” 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 8/116:05 am
MDW
- IAD
1 stop4h 28m
Delta
Thu 8/136:10 am
IAD
- MDW
1 stop4h 07m
Delta
Deal found 6/4![Delta logo]()
$241
This United Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 6/239:00 am
ORD
- DCA
Nonstop1h 59m
United Airlines
Wed 6/247:15 am
DCA
- ORD
Nonstop2h 14m
United Airlines
Deal found 5/31![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/78:05 am
MDW
- BWI
1 stop3h 35m
Southwest
Tue 8/118:00 am
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 6/1![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 7/15:59 pm
STL
- IAD
1 stop5h 46m
United Airlines
Wed 7/88:15 am
IAD
- STL
1 stop4h 56m
United Airlines
Deal found 6/1![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 7/2911:25 am
MDW
- DCA
1 stop6h 30m
Southwest
Tue 8/116:00 am
DCA
- MDW
2 stops7h 05m
Southwest
Deal found 6/1![Southwest logo]()
$260
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 9/1710:48 am
MDW
- BWI
1 stop5h 50m
Delta
Mon 9/216:00 am
BWI
- MDW
1 stop4h 53m
Delta
Deal found 5/31![Delta logo]()
$265
This United Airlines deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/86:30 am
ORD
- IAD
Nonstop1h 54m
United Airlines
Sun 7/198:15 am
IAD
- ORD
Nonstop2h 21m
United Airlines
Deal found 6/2![United Airlines logo]()
$278
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 9/26:30 am
MDW
- BWI
Nonstop1h 45m
Southwest
Fri 9/45:15 pm
BWI
- MDW
1 stop5h 40m
Southwest
Deal found 6/3![Southwest logo]()
$263
This Delta deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:05 am
MDW
- IAD
1 stop6h 25m
Delta
Tue 7/1412:37 pm
IAD
- MDW
1 stop4h 38m
Delta
Deal found 6/4![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 7/26:00 am
ORD
- DCA
Nonstop1h 54m
United Airlines
Tue 7/76:10 pm
DCA
- ORD
Nonstop2h 22m
United Airlines
Deal found 6/3![United Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/232:30 pm
ORD
- DCA
1 stop5h 28m
Delta
Tue 6/306:00 am
DCA
- ORD
1 stop5h 50m
Delta
Deal found 6/1![Delta logo]()
$268
This Southwest deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/32:45 pm
MDW
- DCA
1 stop7h 10m
Southwest
Tue 7/73:00 pm
DCA
- MDW
1 stop5h 05m
Southwest
Deal found 6/3![Southwest logo]()
$273
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 6/229:55 pm
ORD
- IAD
Nonstop2h 04m
United Airlines
Tue 6/2310:15 pm
IAD
- ORD
Nonstop2h 11m
United Airlines
Deal found 5/30![United Airlines logo]()
$283
This Delta deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/31:46 pm
ORD
- DCA
1 stop5h 02m
Delta
Tue 7/1412:23 pm
DCA
- ORD
1 stop5h 00m
Delta
Deal found 6/2![Delta logo]()
$273
This Southwest deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/247:25 am
MDW
- BWI
Nonstop1h 50m
Southwest
Fri 6/266:10 am
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 6/1![Southwest logo]()
$283
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 7/259:45 pm
ORD
- PHL
Nonstop2h 12m
United Airlines
Wed 7/291:31 pm
PHL
- ORD
Nonstop2h 24m
United Airlines
Deal found 6/3![United Airlines logo]()
$287
This Delta deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/16:05 am
ORD
- IAD
1 stop4h 43m
Delta
Fri 7/105:26 pm
IAD
- ORD
1 stop4h 05m
Delta
Deal found 5/30![Delta logo]()
$273
This Southwest deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 9/248:15 am
MDW
- BWI
1 stop3h 10m
Southwest
Mon 9/284:50 pm
BWI
- MDW
1 stop3h 45m
Southwest
Deal found 6/2![Southwest logo]()
$284
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 7/97:00 am
ORD
- DCA
Nonstop1h 59m
United Airlines
Mon 7/137:15 am
DCA
- ORD
Nonstop2h 13m
United Airlines
Deal found 5/30![United Airlines logo]()
$297
This Delta deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” 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 7/218:03 am
ORD
- IAD
1 stop7h 43m
Delta
Fri 7/247:26 pm
IAD
- ORD
1 stop5h 27m
Delta
Deal found 5/31![Delta logo]()
$273
Last-minute flights from Illinois to MarylandDiscover last-minute flight deals from Illinois to Maryland. Data last updated June 4, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Maryland. Data last updated June 4, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 6/225:06 pm
STL
- BWI
1 stop13h 29m
Frontier
Tue 7/79:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/1![Frontier logo]()
$201
This Frontier deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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.
Fri 6/268:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Sat 6/276:00 am
PHL
- ORD
1 stop7h 24m
Frontier
Deal found 5/30![Frontier logo]()
$204
This Mytrip deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/278:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Mon 6/297:00 am
PHL
- ORD
1 stop18h 48m
Frontier
Deal found 6/1![Frontier logo]()
$205
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 6/306:31 pm
STL
- BWI
1 stop20h 51m
Frontier
Tue 7/78:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/2![Frontier logo]()
$186
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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
Tue 7/149:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 6/3![Frontier logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 7/159:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 6/3![Frontier logo]()
$204
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 7/215:21 pm
BWI
- STL
1 stop7h 38m
Frontier
Deal found 6/3![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” 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 7/188:52 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Wed 7/2212:44 pm
PHL
- ORD
1 stop9h 08m
Frontier
Deal found 6/1![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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
Sun 8/97:07 pm
BWI
- STL
1 stop14h 50m
Frontier
Deal found 6/2![Frontier logo]()
$205
This Frontier deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/257:05 am
ORD
- PHL
1 stop11h 15m
Frontier
Sat 8/16:05 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Deal found 6/2![Frontier logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/286:34 pm
STL
- BWI
1 stop11h 52m
Frontier
Tue 8/48:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 6/2![Frontier logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 7/314:57 pm
STL
- BWI
1 stop13h 29m
Frontier
Sat 8/229:49 pm
BWI
- STL
1 stop20h 41m
Frontier
Deal found 6/2![Frontier logo]()
$195
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 4, 2026.
Search for one-way flight options from Illinois to Maryland. Find affordable one-way fares based on user searches. Data last updated June 4, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 7/144:09 pm
STL
- BWI
1 stop15h 45m
Frontier
Deal found 6/3![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 8/227:52 pm
ORD
- PHL
Nonstop2h 28m
Frontier
Deal found 6/2![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 8/14:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Deal found 6/2![Frontier logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 8/315:33 pm
STL
- BWI
1 stop21h 00m
Frontier
Deal found 6/2![Frontier logo]()
$88
This Super.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” 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 6/278:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Deal found 5/30![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 stop13h 29m
Frontier
Deal found 6/3![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/256:33 pm
STL
- BWI
1 stop12h 12m
Frontier
Deal found 6/3![Frontier logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 8/56:05 am
MDW
- PHL
2 stops12h 24m
Frontier
Deal found 6/3![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” 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 6/2![Frontier logo]()
$92
This Frontier deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:58 pm
ORD
- PHL
Nonstop2h 23m
Frontier
Deal found 6/3![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” 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 6/306:31 pm
STL
- BWI
1 stop23h 01m
Frontier
Deal found 6/3![Frontier logo]()
$93
This deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/28:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Deal found 5/31![Frontier logo]()
$94
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 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $150 (Kiwi.com) |
One-way from | $76 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $283 |
Good round-trip deal | $292 or less |
Good one-way deal | $145 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 4, 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
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Tue 8/11
3:41 pm-1:40 pm
1 stop20h 59m
Baltimore/Washington
Wed 8/19
3:09 pm-12:14 am
1 stop10h 05m
$150
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Fri 7/3
7:00 pm-9:55 pm
Nonstop1h 55m
Baltimore/Washington
Tue 7/7
6:30 pm-7:35 pm
Nonstop2h 05m
$239
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Sat 8/8
2:27 pm-9:28 pm
1 stop6h 01m
Baltimore/Washington
Tue 8/11
6:15 am-10:42 am
1 stop5h 27m
$241
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Wed 8/12
6:51 am-11:42 am
1 stop3h 51m
Baltimore/Washington
Mon 8/17
6:15 am-10:42 am
1 stop5h 27m
$241
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Wed 10/21
7:10 am-1:04 pm
1 stop4h 54m
Baltimore/Washington
Sat 10/24
5:30 pm-8:24 pm
1 stop3h 54m
$241
ChicagoWashington, D.C.
MDW - IAD
MDWIAD
Chicago Midway
Tue 8/11
6:05 am-11:33 am
1 stop4h 28m
Washington, D.C. Dulles Intl
Thu 8/13
6:10 am-9:17 am
1 stop4h 07m
$241
ChicagoWashington, D.C.
MDW - DCA
MDWDCA
Chicago Midway
Mon 7/20
8:10 pm-11:05 pm
Nonstop1h 55m
Washington, D.C. Reagan-National
Wed 7/22
9:30 pm-10:35 pm
Nonstop2h 05m
$247
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Tue 10/27
7:50 am-12:50 pm
1 stop4h 00m
Baltimore/Washington
Wed 10/28
9:45 am-10:45 am
Nonstop2h 00m
$249
ChicagoWashington, D.C.
ORD - IAD
ORDIAD
Chicago O'Hare Intl
Fri 8/7
3:53 pm-7:02 pm
Nonstop2h 09m
Washington, D.C. Dulles Intl
Tue 8/11
1:13 pm-2:30 pm
Nonstop2h 17m
$253
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Fri 8/7
8:05 am-12:40 pm
1 stop3h 35m
Baltimore/Washington
Tue 8/11
8:00 am-9:00 am
Nonstop2h 00m
$259
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
ORD-PHL
MDW-PHL
MDW-BWI
ORD-BWI
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
ORD-PHL
MDW-PHL
MDW-BWI
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 $513). 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 4, 2026.
It’s typically best to fly out from Illinois to Maryland at noon. Doing so could potentially save you 26% 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 4, 2026.
The most flights from USIL to USMD are scheduled on a Wednesday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 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 May 30, 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. Saturday evenings 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 4, 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
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Food
7.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
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 4, 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 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$57 | Average$161 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$127 | Average$264 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$145 | Average$375 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$148 | Average$404 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$183 | Average$361 | FlexibilityNo cancel fee | On-timeN/A |