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$71+ 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 5/22. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
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 April 17, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$141
(CheapOair)

One-way from

$71
(Mytrip)

Popular in

May

Cheapest in

September

Average price

$273

Good round-trip deal

$167 or less

Good one-way deal

$91 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Chicago (CHI) flights.
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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. 6% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($2 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 17, 2025.

This CheapOair deal was found by Cheapflights users on 4/15. 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.
Sun 6/18:10 amBWI - ORD
Nonstop2h 14mSpirit Airlines
Thu 6/510:33 amORD - BWI
Nonstop1h 46mSpirit Airlines
Deal found 4/15$141
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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 6/46:27 pmBWI - MDW
Nonstop2h 04mFrontier
Mon 6/92:44 pmMDW - BWI
Nonstop1h 58mFrontier
Deal found 4/16$147
This CheapOair deal was found by Cheapflights users on 4/17. 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.
Tue 5/66:07 amBWI - ORD
1 stop11h 34mMultiple Airlines
Thu 5/810:33 amORD - BWI
Nonstop1h 46mMultiple Airlines
Deal found 4/17$150
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
Fri 6/66:35 pmPHL - MDW
Nonstop2h 17mFrontier
Mon 6/98:52 pmMDW - PHL
Nonstop2h 04mFrontier
Deal found 4/16$152
This American Airlines deal was found by Cheapflights users on 4/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2411:55 amDCA - ORD
Nonstop2h 14mAmerican Airlines
Sun 5/257:50 amORD - DCA
Nonstop1h 54mAmerican Airlines
Deal found 4/15$161
This Southwest deal was found by Cheapflights users on 4/16. 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.
Sat 5/245:00 pmBWI - MDW
Nonstop2h 00mSouthwest
Sat 5/247:55 pmMDW - BWI
Nonstop1h 50mSouthwest
Deal found 4/16$161
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/106:45 amBWI - ORD
Nonstop2h 17mUnited Airlines
Sun 5/117:00 amORD - BWI
Nonstop1h 54mUnited Airlines
Deal found 4/15$161
This Cheapflightsfares deal was found by Cheapflights users on 4/16. 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.
Fri 6/64:28 pmPHL - ORD
Nonstop2h 36mFrontier
Mon 6/97:04 pmORD - PHL
Nonstop2h 26mFrontier
Deal found 4/16$162
This American Airlines deal was found by Cheapflights users on 4/16. 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.
Tue 7/14:23 pmPHL - ORD
Nonstop2h 32mAmerican Airlines
Tue 7/85:00 amORD - PHL
Nonstop2h 00mAmerican Airlines
Deal found 4/16$169
This Southwest deal was found by Cheapflights users on 4/16. 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 7/17:10 pmPHL - MDW
Nonstop2h 15mSouthwest
Tue 7/88:30 pmMDW - PHL
Nonstop1h 55mSouthwest
Deal found 4/16$169
This Southwest deal was found by Cheapflights users on 4/16. 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.
Mon 6/3011:55 amBWI - ORD
Nonstop2h 10mSouthwest
Thu 7/31:50 pmORD - BWI
Nonstop2h 00mSouthwest
Deal found 4/16$169
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/1710:06 amPHL - ORD
Nonstop2h 24mUnited Airlines
Sun 5/257:25 amORD - PHL
Nonstop2h 12mUnited Airlines
Deal found 4/17$170

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 April 17, 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

Sun 6/1

8:10 am-9:24 am

Nonstop2h 14m

Chicago O'Hare Intl

Thu 6/5

10:33 am-1:19 pm

Nonstop1h 46m

$141

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Wed 6/4

6:27 pm-7:31 pm

Nonstop2h 04m

Chicago Midway

Mon 6/9

2:44 pm-5:42 pm

Nonstop1h 58m

$147

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 5/6

6:07 am-4:41 pm

1 stop11h 34m

Chicago O'Hare Intl

Thu 5/8

10:33 am-1:19 pm

Nonstop1h 46m

$150

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Fri 6/6

6:35 pm-7:52 pm

Nonstop2h 17m

Chicago Midway

Mon 6/9

8:52 pm-11:56 pm

Nonstop2h 04m

$152

Washington, D.C.Chicago

DCA - ORD

DCAORD

Washington, D.C. Reagan-National

Sat 5/24

11:55 am-1:09 pm

Nonstop2h 14m

Chicago O'Hare Intl

Sun 5/25

7:50 am-10:44 am

Nonstop1h 54m

$161

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Sat 5/24

5:00 pm-6:00 pm

Nonstop2h 00m

Chicago Midway

Sat 5/24

7:55 pm-10:45 pm

Nonstop1h 50m

$161

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Sat 5/10

5:18 pm-6:35 pm

Nonstop2h 17m

Chicago O'Hare Intl

Sun 5/11

7:00 am-9:54 am

Nonstop1h 54m

$161

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Fri 6/6

4:28 pm-6:04 pm

Nonstop2h 36m

Chicago O'Hare Intl

Mon 6/9

7:04 pm-10:30 pm

Nonstop2h 26m

$162

PhiladelphiaChicago

PHL - ORD

PHLORD

Philadelphia

Tue 7/1

4:23 pm-5:55 pm

Nonstop2h 32m

Chicago O'Hare Intl

Tue 7/8

5:00 am-8:00 am

Nonstop2h 00m

$169

PhiladelphiaChicago

PHL - MDW

PHLMDW

Philadelphia

Tue 7/1

7:10 pm-8:25 pm

Nonstop2h 15m

Chicago Midway

Tue 7/8

8:30 pm-11:25 pm

Nonstop1h 55m

$169

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

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 April 17, 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 April 17, 2025.

The most flights from USMD to USIL are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 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 April 17, 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
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,887 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,280 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Avelo Airlines
7.5
Good
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 Spirit Airlines, with whom users have recently found tickets for as low as $71. However, be on the lookout for offers from Frontier and American Airlines, 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$46Average$171FlexibilityNo cancel feeOn-time65%
FrontierCheapest$58Average$163FlexibilityNo cancel feeOn-time62%
DeltaCheapest$99Average$324FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$145Average$441FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$154Average$342FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$165Average$294FlexibilityNo cancel feeOn-time63%

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