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$55+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
janv. 21 — janv. 281
mar. 1/21
mar. 1/28
1 adult, Economy
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Cheap flight deals from Baltimore to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated janvier 16, 2025.

Round-trip from

$120
(FlightHub)

One-way from

$55
(Frontier)
From Baltimore/Washington to Illinois
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One-way flight from Baltimore/Washington to Illinois
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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 janvier 16, 2025.

This FlightHub deal was found by Cheapflights users on 1/14. 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.
jeu. 1/309:20 pmBWI - STL
1 stop27h 11mFrontier
sam. 2/15:05 pmSTL - BWI
1 stop13h 46mFrontier
Deal found 1/14$120
This Flightnetwork deal was found by Cheapflights users on 1/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 4/236:00 amBWI - MDW
1 stop9h 25mFrontier
lun. 4/286:15 amMDW - BWI
Nonstop1h 50mFrontier
Deal found 1/16$122
This Flightnetwork deal was found by Cheapflights users on 1/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 4/246:00 amBWI - ORD
1 stop6h 26mFrontier
dim. 4/276:17 pmORD - BWI
1 stop16h 57mFrontier
Deal found 1/16$124
This Priceline deal was found by Cheapflights users on 1/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 5/144:15 pmBWI - ORD
1 stop7h 06mMultiple Airlines
sam. 5/176:01 pmORD - BWI
1 stop5h 34mMultiple Airlines
Deal found 1/15$125
This Southwest deal was found by Cheapflights users on 1/15. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/188:50 pmBWI - MDW
Nonstop2h 10mSouthwest
mer. 2/198:10 amMDW - BWI
Nonstop1h 50mSouthwest
Deal found 1/15$137
This Justfly.com deal was found by Cheapflights users on 1/15. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/410:10 amBWI - STL
1 stop14h 21mMultiple Airlines
jeu. 2/64:28 pmSTL - BWI
1 stop6h 31mMultiple Airlines
Deal found 1/15$148
This United Airlines deal was found by Cheapflights users on 1/15. 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.
mer. 2/125:22 pmBWI - ORD
Nonstop2h 18mUnited Airlines
mer. 2/1910:55 amORD - BWI
Nonstop1h 58mUnited Airlines
Deal found 1/15$148
This FlightHub deal was found by Cheapflights users on 1/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 5/144:15 pmBWI - ORD
1 stop7h 06mSpirit Airlines
dim. 5/186:15 amORD - BWI
1 stop5h 22mSpirit Airlines
Deal found 1/15$152
This American Airlines deal was found by Cheapflights users on 1/15. 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.
mer. 2/1211:51 amBWI - ORD
Nonstop2h 21mAmerican Airlines
mer. 2/198:15 amORD - BWI
Nonstop1h 55mAmerican Airlines
Deal found 1/15$168
This FlightHub deal was found by Cheapflights users on 1/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 2/275:25 amBWI - STL
1 stop10h 17mSpirit Airlines
dim. 3/24:00 pmSTL - BWI
1 stop16h 43mSpirit Airlines
Deal found 1/16$176
This eDestinos deal was found by Cheapflights users on 1/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 3/13:44 pmBWI - MDW
1 stop7h 20mMultiple Airlines
sam. 3/84:40 pmMDW - BWI
2 stops15h 27mMultiple Airlines
Deal found 1/15$185
This Delta deal was found by Cheapflights users on 1/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/56:00 amBWI - MDW
1 stop5h 12mDelta
mer. 2/126:28 pmMDW - BWI
1 stop3h 37mDelta
Deal found 1/16$197

Find flights from Baltimore to Illinois within your budget

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 janvier 16, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

jeu. 1/30

9:20 pm-11:31 pm

1 stop27h 11m

Lambert-St Louis

sam. 2/1

5:05 pm-7:51 am

1 stop13h 46m

$120

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

mer. 4/23

6:00 am-2:25 pm

1 stop9h 25m

Chicago Midway

lun. 4/28

6:15 am-9:05 am

Nonstop1h 50m

$122

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

jeu. 4/24

6:00 am-11:26 am

1 stop6h 26m

Chicago O'Hare Intl

dim. 4/27

6:17 pm-12:14 pm

1 stop16h 57m

$124

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

mer. 5/14

4:15 pm-10:21 pm

1 stop7h 06m

Chicago O'Hare Intl

sam. 5/17

6:01 pm-12:35 am

1 stop5h 34m

$125

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

mar. 2/18

8:50 pm-10:00 pm

Nonstop2h 10m

Chicago Midway

mer. 2/19

8:10 am-11:00 am

Nonstop1h 50m

$137

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

mer. 2/12

5:22 pm-6:40 pm

Nonstop2h 18m

Chicago O'Hare Intl

mer. 2/19

10:55 am-1:53 pm

Nonstop1h 58m

$148

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

mar. 2/4

10:10 am-11:31 pm

1 stop14h 21m

Lambert-St Louis

jeu. 2/6

4:28 pm-11:59 pm

1 stop6h 31m

$148

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

mer. 5/14

4:15 pm-10:21 pm

1 stop7h 06m

Chicago O'Hare Intl

ven. 5/16

6:15 am-3:12 pm

1 stop7h 57m

$152

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

mer. 2/12

11:51 am-1:12 pm

Nonstop2h 21m

Chicago O'Hare Intl

mer. 2/19

8:15 am-11:10 am

Nonstop1h 55m

$169

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

jeu. 2/27

5:25 am-2:42 pm

1 stop10h 17m

Lambert-St Louis

dim. 3/2

4:00 pm-9:43 am

1 stop16h 43m

$176

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 56 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.

Travel insights for flights from Baltimore to Illinois

Get recent, data-driven insights about flights from Baltimore to Illinois including ideal travel times, pricing trends, and more.

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 $320). 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 janvier 16, 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 janvier 16, 2025.

The most flights from BWI to USIL are scheduled on a Wednesday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 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 janvier 16, 2025.
Get a feel of what it's like to fly with Spirit Airlines, United Airlines and American 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
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,965 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Spirit Airlines
6.3
Okay
8,098 reviews
Southwest
8.1
Very good
4,659 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Crew

8.7

Boarding

8.2

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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 $55. 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 ANA (93%), United Airlines (91%) or Royal Jordanian (86%) 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 $1,209, our data indicates the cheapest price to be $99. The most popular route (Baltimore/Washington - Chicago O'Hare Intl), is priced around $127.

  • 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 $320). 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

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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 janvier 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$158FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$101Average$193FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$136Average$437FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$151Average$384FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$159Average$284FlexibilityNo cancel feeOn-time63%
DeltaCheapest$176Average$266FlexibilityNo cancel feeOn-timeN/A
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