$54+ 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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
Jan 30 — Feb 61
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 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 December 31, 2025.
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 December 31, 2025.
This Frontier deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:35 amORD - BWI
Nonstop2h 07mFrontier
Mon 1/124:45 pmBWI - ORD
Nonstop2h 24mFrontier
Deal found 12/29![Frontier logo]()
$224
This Cheapflightsfares deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Fri 1/91:59 pmPHL - ORD
Nonstop2h 40mFrontier
Deal found 12/29![Frontier logo]()
$283
This Frontier deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Thu 1/812:42 pmPHL - ORD
Nonstop2h 40mFrontier
Deal found 12/29![Frontier logo]()
$294
This Priceline deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mMultiple Airlines
Fri 1/91:30 pmPHL - ORD
1 stop5h 13mMultiple Airlines
Deal found 12/29![Multiple Airlines logo]()
$318
This Cheapflightsfares deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:15 pmORD - PHL
Nonstop2h 15mFrontier
Fri 1/91:59 pmPHL - ORD
Nonstop2h 40mFrontier
Deal found 12/29![Frontier logo]()
$323
This Frontier deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:15 pmORD - PHL
Nonstop2h 15mFrontier
Thu 1/812:42 pmPHL - ORD
Nonstop2h 40mFrontier
Deal found 12/29![Frontier logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 12/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mMultiple Airlines
Wed 1/78:54 pmPHL - ORD
1 stop24h 36mMultiple Airlines
Deal found 12/30![Multiple Airlines logo]()
$339
This Priceline deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:15 pmORD - PHL
Nonstop2h 15mMultiple Airlines
Fri 1/91:30 pmPHL - ORD
1 stop5h 13mMultiple Airlines
Deal found 12/29![Multiple Airlines logo]()
$348
This Kiwi.com deal was found by Cheapflights users on 12/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:15 pmORD - PHL
Nonstop2h 15mFrontier
Mon 1/56:36 pmPHL - ORD
Nonstop2h 30mFrontier
Deal found 12/28![Frontier logo]()
$355
This Kiwi.com deal was found by Cheapflights users on 12/28. 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 12/305:35 amORD - BWI
Nonstop2h 07mMultiple Airlines
Wed 12/3110:40 amBWI - ORD
1 stop9h 22mMultiple Airlines
Deal found 12/28![Multiple Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 12/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Mon 1/56:36 pmPHL - ORD
Nonstop2h 30mFrontier
Deal found 12/30![Frontier logo]()
$364
This Cheapflightsfares deal was found by Cheapflights users on 12/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Fri 1/29:40 amPHL - ORD
Nonstop2h 30mFrontier
Deal found 12/30![Frontier logo]()
$369
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 December 31, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $78 (Expedia) |
One-way from | $54 (Expedia) |
Popular in | November |
Cheapest in | August |
Average price | $241 |
Good round-trip deal | $146 or less |
Good one-way deal | $83 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 December 31, 2025.
Use the filters below to find and compare flights from Illinois to Maryland that are best for you.
Fly from
Illinois
Fly to
Maryland
Route
Depart
Return
Price
ChicagoPhiladelphia
ORD - PHL
ORDPHL
Chicago O'Hare Intl
Fri 1/23
4:44 pm-7:59 pm
Nonstop2h 15m
Philadelphia
Wed 1/28
1:40 pm-9:03 pm
1 stop8h 23m
$118
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Wed 1/28
5:42 pm-12:27 pm
1 stop17h 45m
Baltimore/Washington
Wed 2/4
8:00 am-11:33 pm
1 stop16h 33m
$133
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Thu 2/19
6:50 am-9:45 am
Nonstop1h 55m
Baltimore/Washington
Mon 2/23
8:15 pm-9:25 pm
Nonstop2h 10m
$139
ChicagoPhiladelphia
ORD - PHL
ORDPHL
Chicago O'Hare Intl
Tue 1/27
6:20 pm-9:36 pm
Nonstop2h 16m
Philadelphia
Sat 1/31
5:00 pm-6:30 pm
Nonstop2h 30m
$139
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Wed 1/28
5:15 pm-8:10 pm
Nonstop1h 55m
Baltimore/Washington
Wed 2/4
7:45 am-9:05 am
Nonstop2h 20m
$139
ChicagoPhiladelphia
ORD - PHL
ORDPHL
Chicago O'Hare Intl
Wed 1/28
2:30 pm-5:33 pm
Nonstop2h 03m
Philadelphia
Wed 2/4
10:10 am-11:38 am
Nonstop2h 28m
$139
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Sat 1/17
6:15 pm-9:21 pm
Nonstop2h 06m
Baltimore/Washington
Sun 1/18
5:18 pm-6:38 pm
Nonstop2h 20m
$139
ChicagoBaltimore
ORD - BWI
ORDBWI
Chicago O'Hare Intl
Wed 1/28
6:15 pm-9:21 pm
Nonstop2h 06m
Baltimore/Washington
Wed 2/4
10:05 am-11:25 am
Nonstop2h 20m
$139
St. LouisBaltimore
STL - BWI
STLBWI
Lambert-St Louis
Wed 1/28
5:42 pm-4:42 pm
1 stop22h 00m
Baltimore/Washington
Wed 2/4
4:44 pm-11:33 pm
1 stop7h 49m
$142
ChicagoBaltimore
MDW - BWI
MDWBWI
Chicago Midway
Thu 2/19
7:05 pm-9:55 pm
Nonstop1h 50m
Baltimore/Washington
Sun 2/22
7:35 am-8:50 am
Nonstop2h 15m
$158
Showing 1-10 of 60 results
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.
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
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 $58). Flying from Illinois to Maryland in April is currently the most expensive (average of $169). 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 December 31, 2025.
It’s typically best to fly out from Illinois to Maryland at noon. Doing so could potentially save you 23% on the flight price compared to flying in the evening, which is usually more expensive.
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 December 27, 2025.
Travelers seeking maximum savings on their Illinois to Maryland flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 December 31, 2025.
The most flights from USIL to USMD are scheduled on a Monday (19 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (13 on average).
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 December 31, 2025.
Read through reviews of airlines operating flights from Illinois to Maryland, 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.
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Entertainment
7.5
Comfort
8.0
Overall
8.0
Food
7.0
Boarding
8.1
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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 December 31, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$45 | Average$147 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$58 | Average$158 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$141 | Average$315 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$148 | Average$397 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$157 | Average$279 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$183 | Average$344 | FlexibilityNo cancel fee | On-timeN/A |