$55+ Cheap flights from Maryland to Illinois
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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Feb 28 — Mar 71
1 adult, Economy
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Cheapest flights from Maryland to IllinoisExplore the most affordable flight options available from Maryland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
Explore the most affordable flight options available from Maryland to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.
This Priceline deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/610:00 am
BWI
- ORD
Nonstop2h 27m
Frontier
Mon 2/98:45 am
ORD
- BWI
Nonstop2h 00m
Frontier
Deal found 1/26![Frontier logo]()
$102
This Frontier deal was found by Cheapflights users on 1/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:19 pm
BWI
- ORD
Nonstop2h 27m
Frontier
Sat 2/214:42 pm
ORD
- BWI
1 stop6h 49m
Frontier
Deal found 1/27![Frontier logo]()
$103
This Trip.com deal was found by Cheapflights users on 1/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/59:19 am
BWI
- ORD
Nonstop2h 27m
Multiple Airlines
Mon 3/98:16 pm
ORD
- BWI
1 stop11h 50m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1712:30 pm
BWI
- ORD
1 stop23h 52m
Multiple Airlines
Thu 2/193:15 pm
ORD
- BWI
Nonstop2h 09m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$105
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/269:19 am
BWI
- ORD
Nonstop2h 27m
Frontier
Thu 3/53:21 pm
ORD
- BWI
1 stop16h 05m
Frontier
Deal found 1/28![Frontier logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/2512:30 pm
BWI
- ORD
1 stop7h 41m
Multiple Airlines
Wed 3/411:51 am
ORD
- BWI
1 stop11h 40m
Multiple Airlines
Deal found 1/27![Multiple Airlines logo]()
$107
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2412:30 pm
BWI
- ORD
1 stop9h 43m
Spirit Airlines
Fri 2/278:16 pm
ORD
- BWI
1 stop11h 50m
Spirit Airlines
Deal found 1/28![Spirit Airlines logo]()
$108
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/269:19 am
BWI
- ORD
Nonstop2h 27m
Frontier
Sun 3/16:05 pm
ORD
- BWI
Nonstop2h 09m
Frontier
Deal found 1/28![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 2/197:19 pm
BWI
- ORD
Nonstop2h 27m
Frontier
Fri 2/204:42 pm
ORD
- BWI
1 stop6h 49m
Frontier
Deal found 1/27![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:00 am
BWI
- ORD
1 stop12h 12m
Frontier
Thu 2/193:15 pm
ORD
- BWI
Nonstop2h 09m
Frontier
Deal found 1/28![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/127:19 pm
BWI
- ORD
Nonstop2h 27m
Frontier
Wed 2/186:02 pm
ORD
- BWI
1 stop5h 29m
Frontier
Deal found 1/28![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 2/277:11 am
PHL
- ORD
Nonstop2h 36m
Multiple Airlines
Tue 3/312:44 pm
ORD
- PHL
1 stop9h 32m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$119
Find flight deals from Maryland to Illinois
Keep the following information in mind while searching for Maryland to Illinois flight deals. Data was last updated January 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $102 (Priceline) |
One-way from | $55 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $253 |
Good round-trip deal | $219 or less |
Good one-way deal | $121 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Maryland to Illinois 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 January 29, 2026.
Use the filters below to find and compare flights from Maryland to Illinois that are best for you.
Fly from
Maryland
Fly to
Illinois
Route
Depart
Return
Price
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Mon 2/23
8:15 pm-9:25 pm
Nonstop2h 10m
Chicago Midway
Sat 2/28
6:15 pm-9:05 pm
Nonstop1h 50m
$149
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 2/21
6:20 am-7:43 am
Nonstop2h 23m
Chicago O'Hare Intl
Sat 2/28
11:00 am-2:01 pm
Nonstop2h 01m
$149
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sat 2/21
12:10 pm-1:20 pm
Nonstop2h 10m
Chicago Midway
Sat 2/28
7:30 am-10:25 am
Nonstop1h 55m
$149
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Mon 3/2
6:30 am-7:53 am
Nonstop2h 23m
Chicago O'Hare Intl
Fri 3/6
6:40 pm-9:42 pm
Nonstop2h 02m
$158
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Mon 3/2
7:40 am-9:00 am
Nonstop2h 20m
Chicago Midway
Fri 3/6
9:40 pm-12:25 am
Nonstop1h 45m
$158
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Tue 3/10
8:09 am-9:32 am
Nonstop2h 23m
Chicago O'Hare Intl
Wed 3/11
6:40 pm-9:42 pm
Nonstop2h 02m
$177
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Sat 3/7
2:55 pm-4:00 pm
Nonstop2h 05m
Chicago Midway
Mon 3/9
9:40 pm-12:25 am
Nonstop1h 45m
$177
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Wed 2/18
6:00 am-8:54 am
1 stop3h 54m
Chicago Midway
Wed 2/18
6:20 pm-10:53 pm
1 stop3h 33m
$179
BaltimoreChicago
BWI - ORD
BWIORD
Baltimore/Washington
Sat 2/28
6:20 am-7:43 am
Nonstop2h 23m
Chicago O'Hare Intl
Wed 3/4
6:15 pm-9:17 pm
Nonstop2h 02m
$179
BaltimoreChicago
BWI - MDW
BWIMDW
Baltimore/Washington
Fri 2/27
6:00 am-8:54 am
1 stop3h 54m
Chicago Midway
Wed 3/4
12:45 pm-7:40 pm
1 stop5h 55m
$187
Showing 1-10 of 60 results
Best time to book a flight from Maryland to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Maryland with our price prediction graph.
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 Maryland to Illinois
What is the cheapest month to book a flight from Maryland to Illinois?
Currently, March is the cheapest month in which you can book a flight from Maryland to Illinois (average of $55). Flying from Maryland to Illinois in June is currently the most expensive (average of $133). 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 MD to IL?
Find hourly flight availability from Maryland to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 29, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 44% on flights from Maryland to Illinois by exploring options for tickets in the evening.
What is the cheapest day to fly from Maryland to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Maryland to Illinois. Price data was last updated on January 24, 2026.
Travelers seeking maximum savings on their Maryland to Illinois flight should consider departing on Saturday at noon when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Maryland to Illinois
Explore weekly flight availability from Maryland to Illinois. 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 January 29, 2026.
The most flights from USMD to USIL are scheduled on a Thursday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Maryland to Illinois?
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated January 29, 2026.
Read through reviews of airlines operating flights from Maryland to Illinois, such as Southwest, United Airlines, and American 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.
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Comfort
8.0
Entertainment
7.5
Food
7.0
Boarding
8.1
Crew
8.6
Overall
8.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Maryland to Illinois. 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 Maryland to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Maryland to Illinois
Discover the top 6 airlines that operate flights from Maryland to Illinois. 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 January 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$41 | Average$115 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$57 | Average$161 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$131 | Average$321 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$148 | Average$293 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$159 | Average$402 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$442 | FlexibilityNo cancel fee | On-timeN/A |