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$49+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
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 November 13, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$115
(Frontier)

One-way from

$49
(Trip.com)

Popular in

November

Cheapest in

September

Average price

$291
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 Baltimore/Washington to Illinois
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One-way flight from Baltimore/Washington to Illinois
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Highest demand for flights based on searches. 4% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in November 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 November 13, 2025.

This Frontier deal was found by Cheapflights users on 11/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:06 amBWI - ORD
Nonstop2h 18mFrontier
Tue 12/305:35 amORD - BWI
Nonstop2h 07mFrontier
Deal found 11/12$115
This CheapOair deal was found by Cheapflights users on 11/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:36 pmBWI - ORD
Nonstop2h 18mFrontier
Mon 12/811:01 amORD - BWI
1 stop7h 42mFrontier
Deal found 11/11$116
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Wed 12/108:00 amBWI - ORD
1 stop7h 31mFrontier
Sat 12/136:11 amORD - BWI
1 stop17h 13mFrontier
Deal found 11/12$117
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Thu 12/45:45 amBWI - ORD
1 stop12h 42mFrontier
Sun 12/75:11 amORD - BWI
Nonstop2h 07mFrontier
Deal found 11/12$118
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 12/712:43 pmBWI - MDW
1 stop22h 09mFrontier
Thu 12/186:33 pmMDW - BWI
1 stop28h 56mFrontier
Deal found 11/12$119
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Mon 11/249:18 amBWI - ORD
1 stop9h 21mFrontier
Sat 11/295:20 amORD - BWI
Nonstop1h 59mFrontier
Deal found 11/12$119
This CheapOair deal was found by Cheapflights users on 11/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:37 amBWI - ORD
Nonstop2h 18mFrontier
Tue 1/65:29 pmORD - BWI
1 stop27h 27mFrontier
Deal found 11/13$120
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Sat 11/229:14 amBWI - ORD
Nonstop2h 20mMultiple Airlines
Tue 12/26:48 amORD - BWI
1 stop5h 33mMultiple Airlines
Deal found 11/12$121
This Super.com deal was found by Cheapflights users on 11/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:36 pmBWI - ORD
Nonstop2h 18mFrontier
Sun 12/79:47 amORD - BWI
1 stop9h 05mFrontier
Deal found 11/12$122
This CheapOair deal was found by Cheapflights users on 11/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:37 amBWI - MDW
1 stop14h 21mFrontier
Fri 12/123:52 pmMDW - BWI
1 stop14h 50mFrontier
Deal found 11/12$124
This CheapOair deal was found by Cheapflights users on 11/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:14 amBWI - MDW
1 stop12h 03mFrontier
Sat 11/2212:25 pmMDW - BWI
Nonstop1h 56mFrontier
Deal found 11/11$125
This Mytrip deal was found by Cheapflights users on 11/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/239:37 amBWI - ORD
Nonstop2h 18mFrontier
Fri 1/21:40 pmORD - BWI
Nonstop2h 07mFrontier
Deal found 11/12$125

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 November 13, 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

Thu 1/29

5:18 pm-6:38 pm

Nonstop2h 20m

Chicago O'Hare Intl

Mon 2/2

11:05 am-2:11 pm

Nonstop2h 06m

$139

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Mon 12/8

11:48 am-10:33 pm

2 stops11h 45m

Lambert-St Louis

Fri 12/12

10:42 am-12:32 am

1 stop12h 50m

$147

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Fri 1/30

1:45 pm-2:55 pm

Nonstop2h 10m

Chicago Midway

Sun 2/1

7:05 am-10:00 am

Nonstop1h 55m

$157

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Fri 2/6

7:40 am-9:00 am

Nonstop2h 20m

Chicago Midway

Sun 2/8

5:15 pm-8:10 pm

Nonstop1h 55m

$157

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Wed 12/17

12:40 pm-1:45 pm

Nonstop2h 05m

Chicago Midway

Wed 12/31

2:30 pm-7:40 pm

1 stop4h 10m

$164

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 12/17

10:20 am-11:28 am

Nonstop2h 08m

Chicago O'Hare Intl

Wed 12/31

6:20 pm-9:26 pm

Nonstop2h 06m

$175

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Thu 1/8

4:20 pm-6:35 pm

1 stop3h 15m

Chicago Midway

Mon 1/12

9:50 am-12:40 pm

Nonstop1h 50m

$175

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Thu 12/25

6:00 am-8:49 am

1 stop3h 49m

Chicago Midway

Thu 12/25

6:08 pm-11:31 pm

1 stop4h 23m

$177

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Mon 11/24

6:00 am-8:54 am

1 stop3h 54m

Chicago Midway

Thu 11/27

5:34 pm-12:26 am

1 stop5h 52m

$177

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Thu 1/8

6:00 am-8:54 am

1 stop3h 54m

Chicago Midway

Mon 1/12

11:21 am-5:48 pm

1 stop5h 27m

$177

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/13

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, March is the cheapest month in which you can book a flight from Baltimore to Illinois (average of $50). Flying from Baltimore to Illinois in June is currently the most expensive (average of $132). 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 November 13, 2025.

When flying from Baltimore to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus a flight in the morning.

What is the cheapest day to fly from Baltimore to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to Illinois. Price data was last updated on November 3, 2024.

Travelers seeking maximum savings on their Baltimore to Illinois flight should consider departing on Friday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 November 13, 2025.

The most flights from BWI to USIL are scheduled on a Monday (18 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 November 13, 2025.
Read reviews from past customers who have flown Southwest, United Airlines, and American Airlines from Baltimore to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,017 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,051 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,138 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,110 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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.

  • How long is the flight from Baltimore to Illinois?

    United Airlines, Frontier, and Southwest can get you from Baltimore to Illinois in just under 2h 10m. Your travel time can differ by up to 9h 35m. Baltimore and Illinois are separated by a distance of 609 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $58. However, be on the lookout for offers from Southwest and United Airlines, 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 Sun Country Air (100%), Spirit Airlines (100%) or ANA (93%) 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 $909, our data indicates the cheapest price to be $56. The most popular route (Baltimore/Washington - Chicago O'Hare Intl), is priced around $58.

  • 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, March is the cheapest month in which you can book a flight from Baltimore to Illinois (average of $50). Flying from Baltimore to Illinois in June is currently the most expensive (average of $132). 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.

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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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$52Average$120FlexibilityNo cancel feeOn-time65%
FrontierCheapest$69Average$167FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$379FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$156Average$294FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$158Average$336FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$166Average$431FlexibilityNo cancel feeOn-time71%

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