HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$66+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$131
(Cheapflightsfares)

One-way from

$68
(Cheapflightsfares)

Popular in

March

Cheapest in

September

Average price

$290

Good round-trip deal

$167 or less

Good one-way deal

$85 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. 0% potential increase in price ($1 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 March 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 March 31, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/30. 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.
Mon 4/2810:00 amBWI - MDW
Nonstop2h 06mFrontier
Mon 5/56:15 amMDW - BWI
Nonstop1h 58mFrontier
Deal found 3/30$131
This Booking.com deal was found by Cheapflights users on 3/31. 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.
Thu 5/158:10 amBWI - ORD
Nonstop2h 14mSpirit Airlines
Thu 5/2210:33 amORD - BWI
Nonstop1h 46mSpirit Airlines
Deal found 3/31$131
This CheapOair deal was found by Cheapflights users on 3/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/158:10 amBWI - ORD
Nonstop2h 14mMultiple Airlines
Mon 5/195:31 pmORD - BWI
1 stop6h 04mMultiple Airlines
Deal found 3/30$157
This Southwest deal was found by Cheapflights users on 3/31. 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 4/306:45 pmBWI - MDW
Nonstop2h 05mSouthwest
Wed 5/77:35 pmMDW - BWI
Nonstop1h 50mSouthwest
Deal found 3/31$158
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2910:35 amBWI - ORD
Nonstop2h 15mSouthwest
Tue 5/61:50 pmORD - BWI
Nonstop1h 55mSouthwest
Deal found 3/30$158
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/36:45 amBWI - ORD
Nonstop2h 17mUnited Airlines
Wed 5/711:15 amORD - BWI
Nonstop2h 01mUnited Airlines
Deal found 3/30$159
This American Airlines deal was found by Cheapflights users on 3/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/147:26 amBWI - ORD
Nonstop2h 17mAmerican Airlines
Wed 5/217:04 pmORD - BWI
Nonstop2h 01mAmerican Airlines
Deal found 3/30$160
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/306:41 amPHL - ORD
Nonstop2h 24mUnited Airlines
Tue 5/611:20 amORD - PHL
Nonstop2h 06mUnited Airlines
Deal found 3/30$168
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/296:35 pmPHL - MDW
Nonstop2h 10mSouthwest
Tue 5/68:25 amMDW - PHL
Nonstop2h 00mSouthwest
Deal found 3/30$168
This Frontier deal was found by Cheapflights users on 3/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/83:38 pmPHL - ORD
Nonstop2h 41mFrontier
Mon 8/1111:32 amORD - PHL
Nonstop2h 16mFrontier
Deal found 3/30$170
This Frontier deal was found by Cheapflights users on 3/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/136:35 pmPHL - MDW
Nonstop2h 17mFrontier
Mon 6/168:52 pmMDW - PHL
Nonstop2h 04mFrontier
Deal found 3/30$171
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/227:03 pmPHL - ORD
2 stops30h 17mSpirit Airlines
Tue 4/295:36 amORD - PHL
2 stops28h 22mSpirit Airlines
Deal found 3/30$172

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 March 31, 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

Mon 4/28

10:00 am-11:06 am

Nonstop2h 06m

Chicago Midway

Mon 5/5

6:15 am-9:13 am

Nonstop1h 58m

$131

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 5/15

8:10 am-9:24 am

Nonstop2h 14m

Chicago O'Hare Intl

Thu 5/22

10:33 am-1:19 pm

Nonstop1h 46m

$131

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 5/15

8:10 am-9:24 am

Nonstop2h 14m

Chicago O'Hare Intl

Mon 5/19

5:31 pm-12:35 am

1 stop6h 04m

$157

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Wed 4/30

6:45 pm-7:50 pm

Nonstop2h 05m

Chicago Midway

Wed 5/7

7:35 pm-10:25 pm

Nonstop1h 50m

$158

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 4/29

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

Tue 5/6

1:50 pm-4:45 pm

Nonstop1h 55m

$158

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Sat 5/3

6:45 am-8:02 am

Nonstop2h 17m

Chicago O'Hare Intl

Wed 5/7

11:15 am-2:16 pm

Nonstop2h 01m

$159

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 5/14

7:26 am-8:43 am

Nonstop2h 17m

Chicago O'Hare Intl

Wed 5/21

7:04 pm-10:05 pm

Nonstop2h 01m

$160

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Wed 4/30

6:41 am-8:05 am

Nonstop2h 24m

Chicago O'Hare Intl

Tue 5/6

11:20 am-2:26 pm

Nonstop2h 06m

$168

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Tue 4/29

6:35 pm-7:45 pm

Nonstop2h 10m

Chicago Midway

Tue 5/6

8:25 am-11:25 am

Nonstop2h 00m

$168

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Fri 8/8

3:38 pm-5:19 pm

Nonstop2h 41m

Chicago O'Hare Intl

Mon 8/11

11:32 am-2:48 pm

Nonstop2h 16m

$170

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

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 $323). 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 March 31, 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 March 31, 2025.

The most flights from USMD to USIL are scheduled on a Monday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 March 31, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Maryland to Illinois to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,818 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Avelo Airlines
7.5
Good
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,614 reviews
Alaska Airlines
8.0
Very good
9,818 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.1

Crew

8.5

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $68. 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 $323). 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.
LaGuardia to Miami flights
Newark to Fort Lauderdale flights
Newark to Miami flights
LaGuardia to Fort Lauderdale flights
John F Kennedy Intl to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
Los Angeles to John F Kennedy Intl flights
John F Kennedy Intl to Miami flights
Newark to Orlando flights
Newark to Las Vegas flights
Dallas/Fort Worth to Seattle flights
LaGuardia to Orlando flights
Dallas/Fort Worth to LaGuardia flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Fort Lauderdale flights
John F Kennedy Intl to Orlando flights
Newark to Los Angeles flights
San Francisco to John F Kennedy Intl flights
Los Angeles to Newark flights
Los Angeles to Honolulu flights
Dallas/Fort Worth to O'Hare Intl flights
Newark to Seattle flights
Dallas/Fort Worth to Las Vegas flights
Newark to Dallas/Fort Worth flights
LaGuardia to Atlanta flights
Denver to Las Vegas flights
O'Hare Intl to Las Vegas flights
John F Kennedy Intl to Seattle flights
Newark to Tampa flights
Dallas/Fort Worth to Newark flights
John F Kennedy Intl to San Francisco flights
Seattle to Las Vegas flights
LaGuardia to O'Hare Intl flights
John F Kennedy Intl to West Palm Beach flights
San Francisco to Newark flights
Dallas/Fort Worth to Orlando flights
Seattle to Newark flights
Atlanta to LaGuardia flights
John F Kennedy Intl to Sky Harbor Intl flights
O'Hare Intl to LaGuardia flights
Los Angeles to LaGuardia flights
Los Angeles to Seattle flights
Newark to New Orleans flights
LaGuardia to Las Vegas flights
John F Kennedy Intl to O'Hare Intl flights
LaGuardia to Los Angeles flights
O'Hare Intl to Dallas/Fort Worth flights
Seattle to Los Angeles flights
John F Kennedy Intl to Denver flights
Atlanta 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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$161FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$59Average$181FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$138Average$436FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$151Average$342FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$161Average$294FlexibilityNo cancel feeOn-time63%
DeltaCheapest$176Average$324FlexibilityNo 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.