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$70+ 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 12/13. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Oct 14 — Oct 211
Tue 10/14
Tue 10/21
1 adult, Economy
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Cheap flight deals from Maryland to Illinois

Keep the following information in mind while searching for Maryland to Illinois flight deals. Data was last updated September 14, 2025.

Round-trip from

$107
(Priceline)

One-way from

$70
(Southwest)

Popular in

April

Cheapest in

September

Average price

$217

Good round-trip deal

$139 or less

Good one-way deal

$87 or less
From Maryland to Illinois
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One-way flight from Maryland to Illinois
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Highest demand for flights based on searches. 8% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Maryland to Illinois.
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Price to beat on a one-way flight from Maryland to Illinois.
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Find flight deals from Maryland to Illinois

Cheapest flights from Maryland to Illinois
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 September 14, 2025.

This Priceline deal was found by Cheapflights users on 9/12. 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 10/35:40 pmBWI - MDW
Nonstop2h 03mFrontier
Mon 10/61:49 pmMDW - BWI
Nonstop2h 01mFrontier
Deal found 9/12$107
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Sun 9/219:59 pmBWI - ORD
Nonstop2h 21mFrontier
Wed 9/2411:45 amORD - BWI
1 stop6h 22mFrontier
Deal found 9/12$107
This Priceline deal was found by Cheapflights users on 9/12. 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 11/34:30 pmBWI - MDW
1 stop6h 41mFrontier
Fri 11/73:47 pmMDW - BWI
Nonstop1h 55mFrontier
Deal found 9/12$108
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/269:59 pmBWI - ORD
Nonstop2h 21mFrontier
Mon 9/296:11 pmORD - BWI
Nonstop2h 03mFrontier
Deal found 9/13$108
This CheapOair deal was found by Cheapflights users on 9/12. 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.
Sat 10/114:12 pmBWI - MDW
Nonstop2h 01mFrontier
Mon 10/135:28 pmMDW - BWI
1 stop15h 52mFrontier
Deal found 9/12$109
This Gotogate deal was found by Cheapflights users on 9/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:54 pmBWI - MDW
Nonstop2h 06mFrontier
Mon 10/275:28 pmMDW - BWI
1 stop15h 52mFrontier
Deal found 9/12$110
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sun 10/128:48 pmBWI - ORD
Nonstop2h 29mFrontier
Wed 10/153:12 pmORD - BWI
1 stop7h 41mFrontier
Deal found 9/13$110
This Trip.com deal was found by Cheapflights users on 9/12. 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.
Sun 9/285:40 pmBWI - MDW
Nonstop2h 03mFrontier
Thu 10/21:49 pmMDW - BWI
Nonstop2h 01mFrontier
Deal found 9/12$111
This Frontier deal was found by Cheapflights users on 9/12. 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 9/229:59 pmBWI - ORD
Nonstop2h 21mFrontier
Tue 9/2311:45 amORD - BWI
1 stop6h 22mFrontier
Deal found 9/12$111
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:59 pmBWI - ORD
Nonstop2h 21mMultiple Airlines
Sun 9/286:10 amORD - BWI
Nonstop1h 52mMultiple Airlines
Deal found 9/13$112
This Priceline deal was found by Cheapflights users on 9/13. 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.
Tue 9/308:12 amBWI - MDW
1 stop8h 46mFrontier
Sat 10/1812:30 pmMDW - BWI
Nonstop1h 57mFrontier
Deal found 9/13$113
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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.
Sun 9/289:57 amBWI - ORD
Nonstop2h 13mSpirit Airlines
Thu 10/26:10 amORD - BWI
Nonstop1h 52mSpirit Airlines
Deal found 9/14$113

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 September 14, 2025.
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 - ORD

BWIORD

Baltimore/Washington

Tue 11/4

6:15 am-7:31 am

Nonstop2h 16m

Chicago O'Hare Intl

Wed 11/5

2:20 pm-5:14 pm

Nonstop1h 54m

$117

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 10/2

2:07 pm-10:48 pm

1 stop9h 41m

Chicago O'Hare Intl

Sun 10/5

6:00 am-9:15 am

Nonstop2h 15m

$126

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Wed 11/5

6:15 pm-7:25 pm

Nonstop2h 10m

Chicago Midway

Wed 11/12

5:35 am-12:55 pm

1 stop6h 20m

$127

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Mon 1/12

10:10 am-11:38 am

Nonstop2h 28m

Chicago O'Hare Intl

Sat 1/17

6:35 pm-9:51 pm

Nonstop2h 16m

$133

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Mon 10/20

9:15 pm-10:20 pm

Nonstop2h 05m

Chicago Midway

Tue 10/21

7:40 pm-10:30 pm

Nonstop1h 50m

$133

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sat 11/1

10:05 am-11:25 am

Nonstop2h 20m

Chicago O'Hare Intl

Mon 11/3

7:55 pm-11:03 pm

Nonstop2h 08m

$133

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Fri 11/14

9:55 pm-11:00 pm

Nonstop2h 05m

Chicago Midway

Sat 11/15

6:40 am-9:30 am

Nonstop1h 50m

$133

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 10/7

6:42 pm-8:10 pm

Nonstop2h 28m

Chicago O'Hare Intl

Thu 10/9

9:36 pm-12:45 am

Nonstop2h 09m

$133

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Sat 11/15

3:15 pm-4:20 pm

Nonstop2h 05m

Chicago Midway

Sun 11/16

5:05 am-7:55 am

Nonstop1h 50m

$133

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sat 11/1

12:40 pm-2:00 pm

Nonstop2h 20m

Chicago O'Hare Intl

Sun 11/2

9:15 pm-12:15 am

Nonstop2h 00m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 60 results
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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, August is the cheapest month in which you can book a flight from Maryland to Illinois (average of $245). Flying from Maryland to Illinois in March is currently the most expensive (average of $321). 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 September 14, 2025.

When flying from Maryland to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 14, 2025.

The most flights from USMD to USIL are scheduled on a Monday (23 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (16 on average).

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 September 14, 2025.
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.
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,245 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,931 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,016 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,245 reviews

Entertainment

7.5

Overall

8.0

Food

7.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Maryland to Illinois?

    For as low as $127, United Airlines can have you in Illinois from Maryland in 2h 10m. The distance from Maryland to Illinois is about 666 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Maryland to Illinois one-way?

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $70. However, be on the lookout for offers from United Airlines and Frontier, as they are both options that can get you from Maryland to Illinois for a low price.

  • Can I find deals for flights from Maryland to Illinois that include hotel bookings?

    Yes. In addition to deals on Maryland to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Maryland to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maryland to Illinois.

  • Can I find deals for business class flights from Maryland to Illinois?

    Yes. Cheapflights offers flight deals from Maryland to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Maryland to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Maryland to Illinois (average of $245). Flying from Maryland to Illinois in March is currently the most expensive (average of $321). 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.

See more FAQs

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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.
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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 September 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$46Average$125FlexibilityNo cancel feeOn-time65%
FrontierCheapest$61Average$165FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$377FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$157Average$292FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$158Average$344FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$159Average$418FlexibilityNo cancel feeOn-time71%

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