$63+ Cheap flights from Illinois to Maryland
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
Jun 22 — Jun 291
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 May 23, 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 May 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/236:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Tue 6/308:31 am
BWI
- STL
1 stop9h 59m
Frontier
Deal found 5/19![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/166:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Tue 6/236:28 am
BWI
- STL
1 stop12h 02m
Frontier
Deal found 5/19![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:06 pm
STL
- BWI
1 stop13h 39m
Frontier
Tue 7/77:07 pm
BWI
- STL
1 stop14h 50m
Frontier
Deal found 5/17![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/26:31 pm
STL
- BWI
1 stop27h 29m
Frontier
Tue 7/79:32 pm
BWI
- STL
1 stop12h 25m
Frontier
Deal found 5/17![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/125:06 pm
STL
- BWI
1 stop24h 27m
Frontier
Tue 6/167:16 pm
BWI
- STL
1 stop14h 36m
Frontier
Deal found 5/19![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 7/224:57 pm
STL
- BWI
1 stop5h 20m
Frontier
Tue 7/289:37 pm
BWI
- STL
1 stop12h 20m
Frontier
Deal found 5/20![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/225:06 pm
STL
- BWI
1 stop13h 29m
Frontier
Tue 6/237:16 pm
BWI
- STL
1 stop14h 36m
Frontier
Deal found 5/19![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/306:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Wed 7/89:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 5/20![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 5/19. 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.
Sat 7/114:52 pm
STL
- BWI
1 stop5h 08m
Frontier
Tue 7/146:36 am
BWI
- STL
1 stop12h 01m
Frontier
Deal found 5/19![Frontier logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/295:06 pm
STL
- BWI
1 stop13h 29m
Frontier
Wed 7/89:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 5/20![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/166:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Thu 6/186:28 am
BWI
- STL
1 stop12h 02m
Frontier
Deal found 5/19![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 7/221:50 pm
ORD
- PHL
1 stop7h 38m
Frontier
Sat 7/256:05 pm
PHL
- ORD
Nonstop2h 42m
Frontier
Deal found 5/19![Frontier logo]()
$187
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 May 23, 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 May 23, 2026.
This Southwest deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1212:45 pm
MDW
- BWI
Nonstop1h 45m
Southwest
Mon 8/173:15 pm
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 5/17![Southwest logo]()
$233
This United Airlines deal was found by Cheapflights users on 5/21. 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 8/116:50 am
ORD
- BWI
Nonstop1h 59m
United Airlines
Thu 8/139:05 am
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 5/21![United Airlines logo]()
$233
This Delta deal was found by Cheapflights users on 5/19. 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.
Wed 10/211:00 pm
MDW
- DCA
1 stop4h 59m
Delta
Sat 10/247:00 am
DCA
- MDW
1 stop5h 56m
Delta
Deal found 5/19![Delta logo]()
$238
This KAYAK deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/195:00 am
ORD
- PHL
Nonstop2h 05m
American Airlines
Tue 7/212:00 pm
PHL
- ORD
Nonstop2h 33m
American Airlines
Deal found 5/18![American Airlines logo]()
$381
This United Airlines deal was found by Cheapflights users on 5/22. 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 8/122:30 pm
ORD
- BWI
Nonstop2h 13m
United Airlines
Mon 8/1710:25 am
BWI
- ORD
Nonstop2h 20m
United Airlines
Deal found 5/22![United Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 5/19. 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.
Fri 7/107:00 pm
MDW
- BWI
Nonstop1h 55m
Southwest
Wed 7/154:50 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Deal found 5/19![Southwest logo]()
$253
This Delta deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/305:22 pm
ORD
- BWI
1 stop4h 56m
Delta
Sat 7/46:08 am
BWI
- ORD
1 stop5h 27m
Delta
Deal found 5/17![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/168:55 am
MDW
- BWI
Nonstop1h 50m
Southwest
Tue 7/214:50 pm
BWI
- MDW
Nonstop2h 05m
Southwest
Deal found 5/18![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 5/21. 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 7/79:20 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Thu 7/96:15 am
BWI
- ORD
Nonstop2h 15m
United Airlines
Deal found 5/21![United Airlines logo]()
$253
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/175:30 am
ORD
- IAD
1 stop5h 09m
Delta
Tue 6/235:29 pm
IAD
- ORD
1 stop4h 02m
Delta
Deal found 5/20![Delta logo]()
$258
This United Airlines deal was found by Cheapflights users on 5/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/239:25 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Thu 6/256:15 am
BWI
- ORD
Nonstop2h 15m
United Airlines
Deal found 5/19![United Airlines logo]()
$253
This Southwest deal was found by Cheapflights users on 5/19. 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 6/275:05 pm
MDW
- DCA
Nonstop1h 50m
Southwest
Wed 7/811:45 am
DCA
- MDW
2 stops6h 20m
Southwest
Deal found 5/19![Southwest logo]()
$258
This Delta deal was found by Cheapflights users on 5/22. 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.
Fri 7/245:18 pm
ORD
- DCA
1 stop4h 41m
Delta
Wed 8/512:23 pm
DCA
- ORD
1 stop5h 01m
Delta
Deal found 5/22![Delta logo]()
$263
This Southwest deal was found by Cheapflights users on 5/22. 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.
Fri 7/246:00 pm
MDW
- DCA
1 stop3h 55m
Southwest
Wed 8/512:00 pm
DCA
- MDW
1 stop5h 50m
Southwest
Deal found 5/22![Southwest logo]()
$263
This Delta deal was found by Cheapflights users on 5/22. 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 6/275:47 pm
MDW
- IAD
1 stop4h 27m
Delta
Wed 7/812:37 pm
IAD
- MDW
1 stop4h 38m
Delta
Deal found 5/22![Delta logo]()
$265
This United Airlines deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:00 am
ORD
- DCA
Nonstop1h 59m
United Airlines
Wed 7/159:30 am
DCA
- ORD
Nonstop2h 20m
United Airlines
Deal found 5/18![United Airlines logo]()
$277
This Southwest deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:45 am
MDW
- BWI
1 stop3h 35m
Southwest
Tue 7/145:20 pm
BWI
- MDW
1 stop3h 50m
Southwest
Deal found 5/18![Southwest logo]()
$264
This Delta deal was found by Cheapflights users on 5/19. 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.
Wed 7/2211:05 am
MDW
- PHL
1 stop5h 07m
Delta
Tue 7/286:25 am
PHL
- MDW
1 stop4h 40m
Delta
Deal found 5/19![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 5/20. 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.
Wed 7/18:00 am
ORD
- DCA
Nonstop2h 01m
United Airlines
Sun 7/52:00 pm
DCA
- ORD
Nonstop2h 18m
United Airlines
Deal found 5/20![United Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 5/21. 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.
Sat 7/256:35 pm
MDW
- IAD
1 stop3h 38m
Delta
Wed 7/296:00 am
IAD
- MDW
1 stop4h 08m
Delta
Deal found 5/21![Delta logo]()
$267
This United Airlines deal was found by Cheapflights users on 5/22. 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.
Sun 8/236:00 am
ORD
- DCA
Nonstop1h 55m
United Airlines
Tue 8/258:30 am
DCA
- ORD
Nonstop2h 15m
United Airlines
Deal found 5/22![United Airlines logo]()
$278
This Southwest deal was found by Cheapflights users on 5/21. 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.
Thu 6/118:00 am
MDW
- DCA
1 stop6h 50m
Southwest
Tue 6/166:00 am
DCA
- MDW
Nonstop2h 00m
Southwest
Deal found 5/21![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 5/21. 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.
Tue 7/2112:41 pm
MDW
- BWI
1 stop7h 48m
Delta
Fri 7/245:00 pm
BWI
- MDW
1 stop6h 15m
Delta
Deal found 5/21![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 5/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:20 pm
ORD
- BWI
Nonstop2h 08m
United Airlines
Sun 7/196:15 am
BWI
- ORD
Nonstop2h 15m
United Airlines
Deal found 5/19![United Airlines logo]()
$283
This Southwest deal was found by Cheapflights users on 5/21. 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.
Mon 6/228:50 pm
MDW
- BWI
Nonstop1h 55m
Southwest
Sat 8/156:35 am
BWI
- MDW
Nonstop2h 00m
Southwest
Deal found 5/21![Southwest logo]()
$289
This Delta deal was found by Cheapflights users on 5/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:00 am
MDW
- IAD
1 stop4h 37m
Delta
Fri 7/245:46 pm
IAD
- MDW
1 stop5h 29m
Delta
Deal found 5/20![Delta logo]()
$273
This United Airlines deal was found by Cheapflights users on 5/21. 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.
Sun 6/147:00 am
ORD
- DCA
Nonstop1h 59m
United Airlines
Wed 6/177:15 am
DCA
- ORD
Nonstop2h 14m
United Airlines
Deal found 5/21![United Airlines logo]()
$283
This Southwest deal was found by Cheapflights users on 5/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/205:55 am
MDW
- DCA
Nonstop1h 45m
Southwest
Mon 6/229:00 pm
DCA
- MDW
Nonstop2h 00m
Southwest
Deal found 5/20![Southwest logo]()
$293
This Delta deal was found by Cheapflights users on 5/22. 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.
Tue 6/306:00 am
STL
- IAD
1 stop7h 02m
Delta
Tue 7/146:00 am
IAD
- STL
1 stop7h 17m
Delta
Deal found 5/22![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 5/21. 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.
Mon 6/158:00 am
ORD
- DCA
Nonstop2h 01m
United Airlines
Wed 6/177:15 am
DCA
- ORD
Nonstop2h 14m
United Airlines
Deal found 5/21![United Airlines logo]()
$283
Last-minute flights from Illinois to MarylandDiscover last-minute flight deals from Illinois to Maryland. Data last updated May 23, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Maryland. Data last updated May 23, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/125:06 pm
STL
- BWI
1 stop24h 27m
Frontier
Tue 6/167:16 pm
BWI
- STL
1 stop14h 36m
Frontier
Deal found 5/19![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/125:06 pm
STL
- BWI
1 stop22h 20m
Frontier
Wed 6/177:27 pm
BWI
- STL
1 stop23h 03m
Frontier
Deal found 5/19![Frontier logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/166:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Tue 6/236:28 am
BWI
- STL
1 stop12h 02m
Frontier
Deal found 5/19![Frontier logo]()
$126
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/166:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Thu 6/186:28 am
BWI
- STL
1 stop12h 02m
Frontier
Deal found 5/19![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/175:06 pm
STL
- BWI
1 stop23h 55m
Frontier
Wed 6/247:27 pm
BWI
- STL
1 stop23h 03m
Frontier
Deal found 5/19![Frontier logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/225:06 pm
STL
- BWI
1 stop13h 29m
Frontier
Tue 6/237:16 pm
BWI
- STL
1 stop14h 36m
Frontier
Deal found 5/19![Frontier logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/236:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Tue 6/308:31 am
BWI
- STL
1 stop9h 59m
Frontier
Deal found 5/19![Frontier logo]()
$125
This Trip.com deal was found by Cheapflights users on 5/19. 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.
Sat 6/278:00 pm
ORD
- PHL
Nonstop2h 32m
Frontier
Mon 6/297:00 am
PHL
- ORD
1 stop18h 48m
Frontier
Deal found 5/19![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/295:06 pm
STL
- BWI
1 stop13h 29m
Frontier
Wed 7/89:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 5/20![Frontier logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/295:06 pm
STL
- BWI
1 stop13h 29m
Frontier
Thu 7/98:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 5/20![Frontier logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/306:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Wed 7/89:37 pm
BWI
- STL
1 stop21h 00m
Frontier
Deal found 5/20![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/306:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Thu 7/98:36 am
BWI
- STL
1 stop10h 01m
Frontier
Deal found 5/20![Frontier logo]()
$178
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 May 23, 2026.
Search for one-way flight options from Illinois to Maryland. Find affordable one-way fares based on user searches. Data last updated May 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/96:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Deal found 5/20![Frontier logo]()
$63
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/166:31 pm
STL
- BWI
1 stop12h 04m
Frontier
Deal found 5/20![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 7/64:52 pm
STL
- IAD
1 stop22h 48m
Frontier
Deal found 5/19![Frontier logo]()
$64
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/295:06 pm
STL
- BWI
1 stop21h 27m
Frontier
Deal found 5/19![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/96:31 pm
STL
- IAD
1 stop27h 46m
Frontier
Deal found 5/20![Frontier logo]()
$65
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 6/155:06 pm
STL
- BWI
1 stop13h 29m
Frontier
Deal found 5/20![Frontier logo]()
$66
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 9/25:33 pm
STL
- BWI
1 stop13h 12m
Frontier
Deal found 5/20![Frontier logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 8/124:52 pm
STL
- BWI
1 stop29h 25m
Frontier
Deal found 5/20![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/98:05 pm
ORD
- PHL
Nonstop2h 26m
Frontier
Deal found 5/18![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 5/20. 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 7/156:05 am
MDW
- PHL
1 stop24h 10m
Frontier
Deal found 5/20![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 5/19. 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 6/125:06 pm
STL
- BWI
1 stop24h 27m
Frontier
Deal found 5/19![Frontier logo]()
$82
This FlightHub deal was found by Cheapflights users on 5/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/278:05 pm
ORD
- PHL
Nonstop2h 26m
Frontier
Deal found 5/18![Frontier logo]()
$86
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 May 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $125 (Kiwi.com) |
One-way from | $63 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $303 |
Good round-trip deal | $261 or less |
Good one-way deal | $143 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 May 23, 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
Wed 8/12
12:45 pm-3:30 pm
Nonstop1h 45m
Baltimore/Washington
Mon 8/17
3:15 pm-4:15 pm
Nonstop2h 00m
$233
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Tue 8/11
6:50 am-9:49 am
Nonstop1h 59m
Baltimore/Washington
Thu 8/13
9:05 am-10:25 am
Nonstop2h 20m
$233
ChicagoWashington, D.C.
MDW - DCA
MDWDCA
Chicago Midway
Wed 10/21
1:00 pm-6:59 pm
1 stop4h 59m
Washington, D.C. Reagan-National
Sat 10/24
7:00 am-11:56 am
1 stop5h 56m
$238
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Wed 8/12
2:30 pm-5:43 pm
Nonstop2h 13m
Baltimore/Washington
Mon 8/17
10:25 am-11:45 am
Nonstop2h 20m
$245
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Fri 7/10
7:00 pm-9:55 pm
Nonstop1h 55m
Baltimore/Washington
Wed 7/15
4:50 pm-5:55 pm
Nonstop2h 05m
$253
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Thu 7/16
8:55 am-11:45 am
Nonstop1h 50m
Baltimore/Washington
Tue 7/21
4:50 pm-5:55 pm
Nonstop2h 05m
$253
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Tue 7/7
9:20 pm-12:28 am
Nonstop2h 08m
Baltimore/Washington
Thu 7/9
6:15 am-7:30 am
Nonstop2h 15m
$253
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Tue 6/23
9:25 pm-12:33 am
Nonstop2h 08m
Baltimore/Washington
Thu 6/25
6:15 am-7:30 am
Nonstop2h 15m
$253
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Tue 6/30
5:22 pm-11:18 pm
1 stop4h 56m
Baltimore/Washington
Sat 7/4
6:08 am-10:35 am
1 stop5h 27m
$257
ChicagoWashington, D.C.
ORD - IAD
ORDIAD
Chicago O'Hare Intl
Wed 6/17
5:30 am-11:39 am
1 stop5h 09m
Washington, D.C. Dulles Intl
Tue 6/23
5:29 pm-8:31 pm
1 stop4h 02m
$258
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
STL-IAD
ORD-PHL
MDW-PHL
MDW-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
STL-IAD
ORD-PHL
MDW-PHL
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 $520). 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 May 23, 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 May 23, 2026.
The most flights from USIL to USMD are scheduled on a Thursday (27 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (17 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 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 May 16, 2026.
Travelers seeking maximum savings on their Illinois to Maryland flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 May 23, 2026.
Read through reviews of airlines operating flights from Illinois to Maryland, such as Southwest,United Airlines, andAmerican Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.6
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Spirit Airlines
Crew
8.6
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Crew
8.6
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Related info for your journey
Find useful and relevant information for your journey from Illinois to Maryland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to Maryland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Maryland by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Maryland by cabin class
Find flights from Illinois to Maryland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Maryland flights
Browse other Illinois and Maryland flight options. Last updated on May 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Maryland
Find the right flight back to Illinois after your stay in Maryland
Illinois to Maryland flights
Consider these flights traveling from Illinois to Maryland.
Top 6 airlines flying from Illinois to Maryland
Discover the top 6 airlines that operate flights from Illinois to Maryland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$46 | Average$129 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$57 | Average$160 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$127 | Average$260 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$131 | Average$373 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$148 | Average$405 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$183 | Average$364 | FlexibilityNo cancel fee | On-timeN/A |