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$63+ Cheap flights from Baltimore (BWI) 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Baltimore to Illinois

Keep the following information in mind while searching for Baltimore to Illinois flight deals. Data was last updated June 12, 2025.

Round-trip from

$118
(Kiwi.com)

One-way from

$63
(FlightHub)

Popular in

April

Cheapest in

September

Average price

$267
From Baltimore/Washington to Illinois
Search Deals
One-way flight from Baltimore/Washington to Illinois
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($17 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 June 2025
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Find flight deals from Baltimore to Illinois

Cheapest flights from Baltimore to Illinois
Explore the most affordable flight options available from Baltimore to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/11. 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 7/28:25 amBWI - ORD
1 stop11h 19mSpirit Airlines
Thu 7/104:37 pmORD - BWI
Nonstop1h 54mSpirit Airlines
Deal found 6/11$118
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 8/147:38 amBWI - ORD
Nonstop2h 00mMultiple Airlines
Mon 8/187:45 amORD - BWI
Nonstop2h 06mMultiple Airlines
Deal found 6/10$120
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/66:31 pmBWI - MDW
Nonstop2h 05mFrontier
Mon 8/1112:50 pmMDW - BWI
Nonstop1h 56mFrontier
Deal found 6/12$122
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 9/1910:58 pmBWI - ORD
Nonstop2h 16mFrontier
Mon 9/227:10 pmORD - BWI
Nonstop2h 03mFrontier
Deal found 6/11$125
This Southwest deal was found by Cheapflights users on 6/10. 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 8/136:40 amBWI - MDW
Nonstop2h 00mSouthwest
Wed 8/1311:45 amMDW - BWI
Nonstop1h 50mSouthwest
Deal found 6/10$139
This Southwest deal was found by Cheapflights users on 6/11. 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 8/2310:35 amBWI - ORD
Nonstop2h 15mSouthwest
Sat 8/231:30 pmORD - BWI
Nonstop2h 00mSouthwest
Deal found 6/11$139
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Thu 7/102:50 pmBWI - STL
1 stop20h 02mSpirit Airlines
Sun 7/1310:47 amSTL - BWI
1 stop19h 52mSpirit Airlines
Deal found 6/11$140
This United Airlines deal was found by Cheapflights users on 6/11. 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 8/146:15 amBWI - ORD
Nonstop2h 15mUnited Airlines
Tue 8/1910:45 amORD - BWI
Nonstop2h 03mUnited Airlines
Deal found 6/11$148
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Thu 8/217:45 amBWI - RFD
1 stop7h 31mMultiple Airlines
Sun 8/243:06 pmRFD - BWI
1 stop6h 54mMultiple Airlines
Deal found 6/11$178
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:10 pmBWI - MDW
1 stop4h 34mDelta
Tue 9/169:30 amMDW - BWI
1 stop5h 22mDelta
Deal found 6/10$207
This American Airlines deal was found by Cheapflights users on 6/11. 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 8/267:58 amBWI - STL
1 stop6h 53mAmerican Airlines
Wed 8/276:06 amSTL - BWI
1 stop4h 46mAmerican Airlines
Deal found 6/11$217
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/126:00 amBWI - ORD
1 stop5h 15mDelta
Sat 7/126:15 pmORD - BWI
1 stop5h 39mDelta
Deal found 6/10$217

Cheapflights Fare Finder

Customize your flight search to find flights from Baltimore 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 June 12, 2025.
Use the filters below to find and compare flights from Baltimore to Illinois that are best for you.

Fly from

Baltimore

Fly to

Illinois

Route

Depart

Return

Price

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 7/2

8:25 am-6:44 pm

1 stop11h 19m

Chicago O'Hare Intl

Thu 7/10

4:37 pm-7:31 pm

Nonstop1h 54m

$118

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 8/14

7:38 am-8:38 am

Nonstop2h 00m

Chicago O'Hare Intl

Mon 8/18

7:45 am-10:51 am

Nonstop2h 06m

$120

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Wed 8/6

6:31 pm-7:36 pm

Nonstop2h 05m

Chicago Midway

Mon 8/11

12:50 pm-3:46 pm

Nonstop1h 56m

$122

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Mon 8/11

11:36 am-12:58 pm

Nonstop2h 22m

Chicago O'Hare Intl

Sun 8/17

7:45 am-10:51 am

Nonstop2h 06m

$125

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Wed 8/13

6:40 am-7:40 am

Nonstop2h 00m

Chicago Midway

Wed 8/13

11:45 am-2:35 pm

Nonstop1h 50m

$139

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Sat 8/23

6:15 am-7:30 am

Nonstop2h 15m

Chicago O'Hare Intl

Sat 8/30

7:00 am-9:55 am

Nonstop1h 55m

$139

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 7/10

2:50 pm-9:52 am

1 stop20h 02m

Lambert-St Louis

Sun 7/13

10:47 am-7:39 am

1 stop19h 52m

$140

BaltimoreChicago

BWI - RFD

BWIRFD

Baltimore/Washington

Thu 8/21

7:45 am-2:16 pm

1 stop7h 31m

Chicago Greater Rockford

Sun 8/24

3:06 pm-11:00 pm

1 stop6h 54m

$178

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Sat 7/12

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

Sat 7/19

1:30 pm-4:25 pm

Nonstop1h 55m

$178

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 8/26

7:58 am-1:51 pm

1 stop6h 53m

Lambert-St Louis

Wed 8/27

6:06 am-11:52 am

1 stop4h 46m

$217

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 60 results
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Best time to book a flight from Baltimore to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Baltimore 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 Baltimore to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Baltimore to Illinois (average of $245). Flying from Baltimore 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 BWI to IL?

Find hourly flight availability from Baltimore 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 June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Baltimore to Illinois as you normally would.

Weekly flight availability from Baltimore to Illinois

Explore weekly flight availability from Baltimore 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 June 12, 2025.

The most flights from BWI to USIL are scheduled on a Thursday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (14 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 June 12, 2025.
Get a feel of what it's like to fly with Southwest, Delta and United Airlines from Baltimore to Illinois by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,950 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,790 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Sun Country Air
6.9
Okay
345 reviews
Southwest
8.0
Very good
4,287 reviews

Food

7.1

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Baltimore to Illinois?

    If you book a flight to Illinois from Baltimore, you will be flying from Baltimore/Washington, which is the city’s only airport. Baltimore/Washington (BWI) is located 8.5 mi from the center of Baltimore.

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

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $63. However, be on the lookout for offers from Frontier and Southwest, as they are both options that can get you from Baltimore to Illinois for a low price.

  • What are the most popular routes from Baltimore to Illinois?

    When deciding which route to take from Baltimore to Illinois consider Baltimore/Washington - Chicago O'Hare Intl, Baltimore/Washington - Chicago Midway or Baltimore/Washington - Lambert-St Louis as they are the most popular.

  • What are the most reliable airlines from Baltimore to Illinois?

    Consider ANA (96%), Cathay Pacific (88%) or Spirit Airlines (88%) when booking your flight. These represent the most reliable airlines when flying from Baltimore to Illinois.

  • What are the cheapest flights from Baltimore to Illinois?

    Looking for the cheapest flight from Baltimore to Illinois? While on average our users pay $977, our data indicates the cheapest price to be $72. The most popular route (Baltimore/Washington - Chicago O'Hare Intl), is priced around $98.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Baltimore 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 Baltimore to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Baltimore to Illinois (average of $245). Flying from Baltimore 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 Baltimore 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 Baltimore to Illinois

Discover the top 6 airlines that operate flights from Baltimore 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$55Average$158FlexibilityNo cancel feeOn-time65%
FrontierCheapest$58Average$149FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$363FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$145Average$441FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$155Average$341FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$166Average$294FlexibilityNo cancel feeOn-time63%

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