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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 5/14. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$116
(Frontier)

One-way from

$63
(Mytrip)

Popular in

March

Cheapest in

September

Average price

$289
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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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 25, 2025.

This Frontier deal was found by Cheapflights users on 3/24. 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.
Wed 4/94:45 pmBWI - MDW
Nonstop2h 06mFrontier
Wed 4/161:05 pmMDW - BWI
Nonstop1h 50mFrontier
Deal found 3/24$116
This Mytrip deal was found by Cheapflights users on 3/23. 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 5/86:20 amBWI - ORD
1 stop27h 35mSpirit Airlines
Mon 5/1211:00 amORD - BWI
1 stop23h 04mSpirit Airlines
Deal found 3/23$124
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Tue 4/226:15 amBWI - ORD
Nonstop2h 17mUnited Airlines
Tue 4/2911:20 amORD - BWI
Nonstop1h 58mUnited Airlines
Deal found 3/23$157
This Southwest deal was found by Cheapflights users on 3/24. 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 5/66:40 amBWI - MDW
Nonstop2h 05mSouthwest
Tue 5/67:35 pmMDW - BWI
Nonstop1h 50mSouthwest
Deal found 3/24$159
This Southwest deal was found by Cheapflights users on 3/24. 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 5/610:35 amBWI - ORD
Nonstop2h 15mSouthwest
Thu 5/81:50 pmORD - BWI
Nonstop1h 55mSouthwest
Deal found 3/24$168
This Southwest deal was found by Cheapflights users on 3/24. 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 4/237:10 amBWI - STL
Nonstop2h 15mSouthwest
Wed 4/306:15 amSTL - BWI
Nonstop2h 00mSouthwest
Deal found 3/24$177
This Delta deal was found by Cheapflights users on 3/24. 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 5/312:47 pmBWI - MDW
1 stop6h 33mDelta
Mon 5/56:45 pmMDW - BWI
1 stop4h 56mDelta
Deal found 3/24$197
This Delta deal was found by Cheapflights users on 3/23. 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.
Tue 6/36:00 amBWI - ORD
1 stop4h 51mDelta
Sat 6/79:45 amORD - BWI
1 stop6h 45mDelta
Deal found 3/23$197
This American Airlines deal was found by Cheapflights users on 3/23. 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 5/78:17 pmBWI - PIA
1 stop4h 39mAmerican Airlines
Wed 5/145:05 pmPIA - BWI
1 stop4h 00mAmerican Airlines
Deal found 3/23$198
This United Airlines deal was found by Cheapflights users on 3/23. 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 4/306:15 amBWI - PIA
1 stop4h 57mUnited Airlines
Wed 4/302:32 pmPIA - BWI
1 stop6h 10mUnited Airlines
Deal found 3/23$199
This Booking.com deal was found by Cheapflights users on 3/24. 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.
Mon 4/149:32 pmBWI - ORD
1 stop12h 52mMultiple Airlines
Thu 4/177:10 pmORD - BWI
1 stop13h 53mMultiple Airlines
Deal found 3/24$199
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Thu 4/245:00 amBWI - ORD
1 stop4h 49mAmerican Airlines
Wed 4/306:45 pmORD - BWI
Nonstop2h 04mAmerican Airlines
Deal found 3/24$211

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 March 25, 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 - MDW

BWIMDW

Baltimore/Washington

Wed 4/9

4:45 pm-5:51 pm

Nonstop2h 06m

Chicago Midway

Wed 4/16

1:05 pm-3:55 pm

Nonstop1h 50m

$116

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 5/8

6:20 am-8:55 am

1 stop27h 35m

Chicago O'Hare Intl

Mon 5/12

11:00 am-11:04 am

1 stop23h 04m

$124

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 4/22

6:15 am-7:32 am

Nonstop2h 17m

Chicago O'Hare Intl

Tue 4/29

11:20 am-2:18 pm

Nonstop1h 58m

$157

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Tue 5/6

6:40 am-7:45 am

Nonstop2h 05m

Chicago Midway

Tue 5/6

7:35 pm-10:25 pm

Nonstop1h 50m

$159

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 5/6

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

Thu 5/8

1:50 pm-4:45 pm

Nonstop1h 55m

$168

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Wed 4/23

7:10 am-8:25 am

Nonstop2h 15m

Lambert-St Louis

Wed 4/30

6:15 am-9:15 am

Nonstop2h 00m

$177

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Sat 5/3

12:47 pm-6:20 pm

1 stop6h 33m

Chicago Midway

Mon 5/5

6:45 pm-12:41 am

1 stop4h 56m

$197

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 6/3

6:18 pm-11:58 pm

1 stop6h 40m

Chicago O'Hare Intl

Tue 6/10

9:50 am-3:40 pm

1 stop4h 50m

$197

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Mon 4/14

9:32 pm-9:24 am

1 stop12h 52m

Chicago O'Hare Intl

Thu 4/17

7:10 pm-10:03 am

1 stop13h 53m

$199

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 4/24

5:00 am-8:49 am

1 stop4h 49m

Chicago O'Hare Intl

Wed 4/30

6:45 pm-9:49 pm

Nonstop2h 04m

$211

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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 $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 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 March 25, 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 March 25, 2025.

The most flights from BWI to USIL are scheduled on a Monday (20 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 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 25, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta 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.
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

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
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

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
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

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
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

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
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

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
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Comfort

7.9

Food

7.1

Entertainment

7.1

Boarding

8.2

Crew

8.5

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 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 (99%), Air New Zealand (89%) or Republic Airways (87%) 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 $1,455, our data indicates the cheapest price to be $108. The most popular route (Baltimore/Washington - Chicago O'Hare Intl), is priced around $136.

  • 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 $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

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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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$162FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$101Average$193FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$137Average$433FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$151Average$343FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$160Average$294FlexibilityNo cancel feeOn-time63%
DeltaCheapest$176Average$312FlexibilityNo cancel feeOn-timeN/A
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