HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$62+ 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Maryland to Illinois 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 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 December 15, 2025.

This Expedia deal was found by Cheapflights users on 12/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:00 pmPHL - ORD
1 stop13h 18mFrontier
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Deal found 12/12$120
This CheapOair deal was found by Cheapflights users on 12/15. 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.
Wed 12/316:36 pmPHL - ORD
Nonstop2h 30mFrontier
Fri 1/25:45 amORD - PHL
1 stop15h 32mFrontier
Deal found 12/15$122
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:27 amPHL - ORD
Nonstop2h 28mUnited Airlines
Thu 12/256:15 pmORD - PHL
Nonstop2h 16mUnited Airlines
Deal found 12/14$139
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:36 pmPHL - ORD
Nonstop2h 30mMultiple Airlines
Thu 1/15:25 amORD - PHL
1 stop12h 44mMultiple Airlines
Deal found 12/14$142
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/269:40 amPHL - ORD
Nonstop2h 30mFrontier
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Deal found 12/14$143
This Frontier deal was found by Cheapflights users on 12/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:30 amPHL - ORD
1 stop5h 10mFrontier
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Deal found 12/13$145
This Kiwi.com deal was found by Cheapflights users on 12/12. 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.
Tue 12/3010:00 pmPHL - ORD
1 stop13h 18mMultiple Airlines
Sat 1/1712:44 pmORD - PHL
1 stop6h 04mMultiple Airlines
Deal found 12/12$154
This Frontier deal was found by Cheapflights users on 12/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:36 pmPHL - ORD
Nonstop2h 30mFrontier
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Deal found 12/14$158
This Southwest deal was found by Cheapflights users on 12/15. 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 12/242:45 pmBWI - ORD
1 stop8h 05mSouthwest
Wed 12/3111:55 amORD - BWI
1 stop6h 50mSouthwest
Deal found 12/15$159
This Kiwi.com deal was found by Cheapflights users on 12/12. 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 12/215:01 pmPHL - ORD
1 stop8h 25mFrontier
Wed 12/312:15 pmORD - PHL
Nonstop2h 15mFrontier
Deal found 12/12$164
This Gotogate deal was found by Cheapflights users on 12/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:55 amBWI - ORD
1 stop7h 38mFrontier
Tue 12/306:50 amORD - BWI
1 stop8h 51mFrontier
Deal found 12/14$168
This Priceline deal was found by Cheapflights users on 12/13. 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.
Wed 12/3110:40 amBWI - ORD
1 stop9h 22mSpirit Airlines
Mon 1/512:09 pmORD - BWI
1 stop10h 40mSpirit Airlines
Deal found 12/13$172

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 December 15, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$86
(CheapOair)

One-way from

$62
(Trip.com)

Popular in

November

Cheapest in

September

Average price

$269

Good round-trip deal

$167 or less

Good one-way deal

$111 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Chicago (CHI) flights.
Search Deals
From Maryland to Illinois
Search Deals
One-way flight from Maryland to Illinois
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Maryland to Illinois.
Search Deals
Price to beat on a one-way flight from Maryland to Illinois.
Search Deals

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 December 15, 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

Thu 1/22

9:26 am-7:38 pm

1 stop11h 12m

Chicago O'Hare Intl

Mon 1/26

8:45 am-11:45 am

Nonstop2h 00m

$97

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Fri 1/16

4:45 pm-6:25 pm

Nonstop2h 40m

Chicago O'Hare Intl

Sun 1/18

7:35 pm-10:50 pm

Nonstop2h 15m

$125

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Fri 1/16

9:26 am-9:03 pm

1 stop12h 37m

Chicago O'Hare Intl

Mon 1/19

6:00 am-9:00 am

Nonstop2h 00m

$131

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Sat 1/17

6:30 am-7:59 am

Nonstop2h 29m

Chicago O'Hare Intl

Sat 1/17

11:20 am-2:31 pm

Nonstop2h 11m

$134

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Sat 1/17

12:40 pm-1:50 pm

Nonstop2h 10m

Chicago Midway

Tue 1/20

10:00 am-12:55 pm

Nonstop1h 55m

$139

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Thu 1/1

6:35 am-8:03 am

Nonstop2h 28m

Chicago O'Hare Intl

Thu 1/1

9:29 pm-12:45 am

Nonstop2h 16m

$139

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 1/13

10:05 am-11:25 am

Nonstop2h 20m

Chicago O'Hare Intl

Tue 1/20

6:15 pm-9:21 pm

Nonstop2h 06m

$139

Washington, D.C.Chicago

IAD - MDW

IADMDW

Washington, D.C. Dulles Intl

Thu 1/22

5:37 pm-10:19 pm

1 stop5h 42m

Chicago Midway

Mon 1/26

6:20 am-4:28 pm

1 stop9h 08m

$145

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 1/8

1:00 pm-9:03 pm

1 stop9h 03m

Chicago O'Hare Intl

Mon 1/12

5:15 am-7:03 pm

1 stop12h 48m

$155

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Fri 1/23

5:40 am-7:00 am

Nonstop2h 20m

Chicago Midway

Tue 1/27

10:00 am-12:55 pm

Nonstop1h 55m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 60 results
1
2
3
...
6

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 $49). 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 December 15, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 39% 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 December 16, 2024.

Travelers seeking maximum savings on their Maryland to Illinois flight should consider departing on Friday evenings 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.

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 December 15, 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
7.9
Good
4,250 reviews

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,092 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,052 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,185 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,080 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Comfort

8.0

Overall

7.9

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 $139, Frontier can have you in Illinois from Maryland in 2h 10m. The distance from Maryland to Illinois is about 666 mi. All flights are typically nonstop.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $39. However, be on the lookout for offers from Spirit Airlines and Southwest, 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, March is the cheapest month in which you can book a flight from Maryland to Illinois (average of $49). 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.

See more FAQs

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 for Maryland to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Miami flights
Newark to Miami flights
Newark to Fort Lauderdale flights
LaGuardia to Miami flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Orlando flights
Dallas/Fort Worth to John F Kennedy Intl flights
John F Kennedy Intl to Los Angeles flights
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Las Vegas flights
Newark to West Palm Beach flights
Newark to Orlando flights
John F Kennedy Intl to Dallas/Fort Worth flights
Los Angeles to Newark flights
Dallas/Fort Worth to LaGuardia flights
Dallas/Fort Worth to Newark flights
Newark to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
Newark to Los Angeles flights
O'Hare Intl to Las Vegas flights
Newark to Dallas/Fort Worth flights
O'Hare Intl to John F Kennedy Intl flights
Seattle to Las Vegas flights
Los Angeles to Seattle flights
John F Kennedy Intl to West Palm Beach flights
Boston to Fort Lauderdale flights
Minneapolis to Sky Harbor Intl flights
John F Kennedy Intl to Tampa flights
LaGuardia to Dallas/Fort Worth flights
Atlanta to John F Kennedy Intl flights
Seattle to Los Angeles flights
Seattle to Dallas/Fort Worth flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to Orlando flights
Boston to Miami flights
O'Hare Intl to Dallas/Fort Worth flights
Baltimore to Fort Lauderdale flights
Dulles Intl to Miami flights
O'Hare Intl to Sky Harbor Intl flights
LaGuardia to Orlando flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Honolulu flights
Atlanta to LaGuardia flights
San Francisco to Las Vegas flights
John F Kennedy Intl to Atlanta flights
John F Kennedy Intl to San Francisco flights
LaGuardia to West Palm Beach flights
Dallas/Fort Worth to O'Hare Intl flights
Dallas/Fort Worth to Denver flights

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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$52Average$120FlexibilityNo cancel feeOn-time65%
FrontierCheapest$58Average$164FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$131Average$310FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$150Average$288FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$169Average$397FlexibilityNo cancel feeOn-time71%
DeltaCheapest$242Average$442FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.