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$50+ 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$109
(Priceline)

One-way from

$50
(Priceline)

Popular in

April

Cheapest in

September

Average price

$263
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 July 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 July 3, 2025.

This Priceline deal was found by Cheapflights users on 7/2. 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.
Sun 9/76:25 amBWI - STL
1 stop9h 39mFrontier
Mon 9/224:00 pmSTL - BWI
1 stop7h 17mFrontier
Deal found 7/2$109
This Mytrip deal was found by Cheapflights users on 7/1. 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 9/185:45 pmBWI - MDW
Nonstop2h 03mFrontier
Sun 9/211:59 pmMDW - BWI
Nonstop2h 01mFrontier
Deal found 7/1$114
This FlightHub deal was found by Cheapflights users on 7/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1111:36 amBWI - ORD
Nonstop2h 22mMultiple Airlines
Sun 8/176:20 amORD - BWI
Nonstop1h 49mMultiple Airlines
Deal found 7/3$114
This Priceline deal was found by Cheapflights users on 7/2. 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.
Mon 8/1111:36 amBWI - ORD
Nonstop2h 22mFrontier
Wed 8/135:34 pmORD - BWI
1 stop5h 51mFrontier
Deal found 7/2$115
This FlightHub deal was found by Cheapflights users on 7/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:12 pmBWI - ORD
1 stop11h 36mSpirit Airlines
Sun 9/75:05 amORD - BWI
1 stop12h 25mSpirit Airlines
Deal found 7/3$134
This Southwest deal was found by Cheapflights users on 7/3. 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 9/33:25 pmBWI - MDW
Nonstop2h 00mSouthwest
Sat 9/611:40 amMDW - BWI
Nonstop1h 50mSouthwest
Deal found 7/3$139
This Southwest deal was found by Cheapflights users on 7/1. 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 9/310:35 amBWI - ORD
Nonstop2h 15mSouthwest
Wed 9/171:50 pmORD - BWI
Nonstop2h 05mSouthwest
Deal found 7/1$139
This Priceline deal was found by Cheapflights users on 6/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/147:15 amBWI - STL
1 stop7h 19mMultiple Airlines
Mon 8/182:30 pmSTL - BWI
1 stop6h 39mMultiple Airlines
Deal found 6/30$143
This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/162:30 pmBWI - STL
1 stop24h 02mSpirit Airlines
Mon 8/182:30 pmSTL - BWI
1 stop6h 39mSpirit Airlines
Deal found 7/1$150
This United Airlines deal was found by Cheapflights users on 7/3. 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 9/35:30 pmBWI - ORD
Nonstop2h 15mUnited Airlines
Fri 9/52:25 pmORD - BWI
Nonstop2h 04mUnited Airlines
Deal found 7/3$158
This American Airlines deal was found by Cheapflights users on 7/2. 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 8/266:54 pmBWI - STL
1 stop5h 11mAmerican Airlines
Wed 8/273:43 pmSTL - BWI
1 stop4h 44mAmerican Airlines
Deal found 7/2$177
This Mytrip deal was found by Cheapflights users on 7/2. 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.
Wed 8/277:54 pmBWI - RFD
2 stops19h 22mMultiple Airlines
Sun 8/313:06 pmRFD - BWI
1 stop7h 53mMultiple Airlines
Deal found 7/2$183

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 July 3, 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

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sun 9/7

6:25 am-3:04 pm

1 stop9h 39m

Lambert-St Louis

Mon 9/22

4:00 pm-12:17 am

1 stop7h 17m

$109

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Mon 8/11

11:36 am-12:58 pm

Nonstop2h 22m

Chicago O'Hare Intl

Sun 8/17

6:20 am-9:09 am

Nonstop1h 49m

$114

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Thu 9/18

5:45 pm-6:48 pm

Nonstop2h 03m

Chicago Midway

Thu 9/25

6:20 am-7:10 pm

1 stop11h 50m

$114

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 8/21

6:37 am-7:07 pm

1 stop13h 30m

Chicago O'Hare Intl

Sun 8/24

6:20 am-9:09 am

Nonstop1h 49m

$116

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Mon 7/28

11:36 am-12:58 pm

Nonstop2h 22m

Chicago O'Hare Intl

Wed 8/6

5:34 pm-12:25 am

1 stop5h 51m

$118

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Wed 9/3

3:25 pm-4:25 pm

Nonstop2h 00m

Chicago Midway

Sat 9/6

11:40 am-2:30 pm

Nonstop1h 50m

$139

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 9/3

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

Wed 9/17

1:50 pm-4:55 pm

Nonstop2h 05m

$139

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Thu 8/14

7:15 am-1:34 pm

1 stop7h 19m

Lambert-St Louis

Mon 8/18

2:30 pm-10:09 pm

1 stop6h 39m

$143

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Sat 8/16

2:30 pm-1:32 pm

1 stop24h 02m

Lambert-St Louis

Mon 8/18

2:30 pm-10:09 pm

1 stop6h 39m

$150

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 9/3

5:30 pm-6:45 pm

Nonstop2h 15m

Chicago O'Hare Intl

Fri 9/5

2:25 pm-5:29 pm

Nonstop2h 04m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 57 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 July 3, 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 July 3, 2025.

The most flights from BWI to USIL are scheduled on a Thursday (23 on average). You will have fewer flight options on Saturday, 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 July 3, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Baltimore to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,266 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,982 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,861 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 Frontier, with whom users have recently found tickets for as low as $50. However, be on the lookout for offers from Spirit Airlines 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%), Royal Jordanian (89%) 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 $1,374, our data indicates the cheapest price to be $63. The most popular route (Baltimore/Washington - Chicago O'Hare Intl), is priced around $82.

  • 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.

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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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$55Average$144FlexibilityNo cancel feeOn-time65%
FrontierCheapest$58Average$152FlexibilityNo cancel feeOn-time62%
DeltaCheapest$98Average$363FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$153Average$422FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$156Average$348FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$163Average$293FlexibilityNo cancel feeOn-time63%

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