HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$72+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
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

Keep the following information in mind while searching for Maryland to Illinois flight deals. Data was last updated julio 30, 2025.

Round-trip from

$117
(Cheapflightsfares)

One-way from

$73
(CheapOair)

Popular in

April

Cheapest in

September

Average price

$266

Good round-trip deal

$151 or less

Good one-way deal

$117 or less
From Maryland to Illinois
Search Deals
One-way flight from Maryland to Illinois
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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

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 julio 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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.
vie. 9/125:40 pmBWI - MDW
Nonstop2h 03mFrontier
dom. 9/141:49 pmMDW - BWI
Nonstop2h 01mFrontier
Deal found 7/29$117
This Cheapflightsfares deal was found by Cheapflights users on 7/29. 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.
vie. 9/129:59 pmBWI - ORD
Nonstop2h 21mFrontier
dom. 9/146:11 pmORD - BWI
Nonstop2h 03mFrontier
Deal found 7/29$117
This Booking.com deal was found by Cheapflights users on 7/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/116:00 amBWI - ORD
1 stop11h 24mSpirit Airlines
jue. 9/186:10 amORD - BWI
Nonstop1h 52mSpirit Airlines
Deal found 7/28$118
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/2112:00 pmPHL - MDW
Nonstop2h 10mFrontier
vie. 8/222:05 pmMDW - PHL
Nonstop2h 10mFrontier
Deal found 7/28$142
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
mié. 8/204:58 pmPHL - ORD
1 stop8h 01mMultiple Airlines
vie. 8/296:35 amORD - PHL
Nonstop2h 17mMultiple Airlines
Deal found 7/27$144
This Priceline deal was found by Cheapflights users on 7/29. 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.
jue. 8/2110:47 amPHL - ORD
Nonstop2h 33mFrontier
vie. 8/226:35 amORD - PHL
Nonstop2h 17mFrontier
Deal found 7/29$146
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/31:25 pmBWI - MDW
Nonstop1h 55mSouthwest
mié. 9/102:55 pmMDW - BWI
Nonstop1h 50mSouthwest
Deal found 7/28$161
This Southwest deal was found by Cheapflights users on 7/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/310:35 amBWI - ORD
Nonstop2h 15mSouthwest
sáb. 9/61:30 pmORD - BWI
Nonstop2h 00mSouthwest
Deal found 7/28$161
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
lun. 8/1111:36 amBWI - ORD
Nonstop2h 22mMultiple Airlines
jue. 8/146:20 amORD - BWI
Nonstop1h 49mMultiple Airlines
Deal found 7/27$165
This Cheapflightsfares deal was found by Cheapflights users on 7/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/39:30 amIAD - MDW
1 stop5h 31mFrontier
sáb. 9/610:51 amMDW - IAD
1 stop6h 33mFrontier
Deal found 7/28$166
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/2710:51 amBWI - ORD
Nonstop2h 14mUnited Airlines
dom. 8/317:00 amORD - BWI
Nonstop1h 55mUnited Airlines
Deal found 7/28$169
This Mytrip deal was found by Cheapflights users on 7/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/181:22 pmIAD - MDW
1 stop5h 55mAllegiant Air
vie. 8/229:32 amMDW - IAD
1 stop4h 51mAllegiant Air
Deal found 7/29$174

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 julio 30, 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 - MDW

BWIMDW

Baltimore/Washington

vie. 9/12

5:40 pm-6:43 pm

Nonstop2h 03m

Chicago Midway

dom. 9/14

1:49 pm-4:50 pm

Nonstop2h 01m

$117

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

vie. 9/12

9:59 pm-11:20 pm

Nonstop2h 21m

Chicago O'Hare Intl

dom. 9/14

6:11 pm-9:14 pm

Nonstop2h 03m

$117

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

jue. 9/11

6:00 am-4:24 pm

1 stop11h 24m

Chicago O'Hare Intl

jue. 9/18

6:10 am-9:02 am

Nonstop1h 52m

$118

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

jue. 8/21

12:00 pm-1:10 pm

Nonstop2h 10m

Chicago Midway

vie. 8/22

2:05 pm-5:15 pm

Nonstop2h 10m

$142

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

mié. 8/20

4:58 pm-11:59 pm

1 stop8h 01m

Chicago O'Hare Intl

vie. 8/29

6:35 am-9:52 am

Nonstop2h 17m

$144

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

jue. 8/21

10:47 am-12:20 pm

Nonstop2h 33m

Chicago O'Hare Intl

vie. 8/22

6:35 am-9:52 am

Nonstop2h 17m

$146

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

mié. 9/3

1:25 pm-2:20 pm

Nonstop1h 55m

Chicago Midway

mié. 9/10

2:55 pm-5:45 pm

Nonstop1h 50m

$161

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

mié. 9/3

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

sáb. 9/6

1:30 pm-4:30 pm

Nonstop2h 00m

$161

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

vie. 8/29

5:06 pm-6:28 pm

Nonstop2h 22m

Chicago O'Hare Intl

jue. 9/4

6:10 am-9:02 am

Nonstop1h 52m

$166

Washington, D.C.Chicago

IAD - MDW

IADMDW

Washington, D.C. Dulles Intl

mié. 9/3

9:30 am-2:01 pm

1 stop5h 31m

Chicago Midway

sáb. 9/6

10:51 am-6:24 pm

1 stop6h 33m

$166

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, 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 julio 30, 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 julio 30, 2025.

The most flights from USMD to USIL are scheduled on a Tuesday (20 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (7 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 julio 30, 2025.
Read through reviews of airlines operating flights from Maryland to Illinois, such as Southwest, Delta, and Avelo 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
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Avelo Airlines
7.5
Good
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,896 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

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.

  • 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 $73. 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, 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

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.
Dallas/Fort Worth to LaGuardia flights
Los Angeles to John F Kennedy Intl flights
Newark to Fort Lauderdale flights
John F Kennedy Intl to Los Angeles flights
Dallas/Fort Worth to O'Hare Intl flights
Newark to O'Hare Intl flights
Los Angeles to Newark flights
John F Kennedy Intl to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
John F Kennedy Intl to O'Hare Intl flights
Newark to Miami flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Miami flights
O'Hare Intl to John F Kennedy Intl flights
Newark to Los Angeles flights
LaGuardia to O'Hare Intl flights
O'Hare Intl to LaGuardia flights
John F Kennedy Intl to Orlando flights
San Francisco to John F Kennedy Intl flights
O'Hare Intl to Newark flights
LaGuardia to Miami flights
John F Kennedy Intl to Seattle flights
Newark to Orlando flights
Los Angeles to Las Vegas flights
Dallas/Fort Worth to Seattle flights
Los Angeles to Honolulu flights
Los Angeles to Seattle flights
John F Kennedy Intl to San Francisco flights
Dallas/Fort Worth to Newark flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Fort Lauderdale flights
Newark to Seattle flights
John F Kennedy Intl to Atlanta flights
San Francisco to Newark flights
Dallas/Fort Worth to John F Kennedy Intl flights
San Francisco to Seattle flights
Los Angeles to O'Hare Intl flights
O'Hare Intl to Dallas/Fort Worth flights
Fort Lauderdale to Newark flights
Dallas/Fort Worth to Los Angeles flights
Atlanta to John F Kennedy Intl flights
Newark to San Francisco flights
Los Angeles to San Jose flights
Hobby to Las Vegas flights
Dallas/Fort Worth to Denver flights
LaGuardia to Orlando flights
Los Angeles to Dallas/Fort Worth flights
Los Angeles to LaGuardia flights
Los Angeles to San Francisco flights
O'Hare Intl to Las Vegas 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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$52Average$152FlexibilityNo cancel feeOn-time65%
FrontierCheapest$61Average$160FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$376FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$152Average$440FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$157Average$289FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$157Average$350FlexibilityNo cancel feeOn-time69%

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.