HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$68+ 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
abr. 16 — abr. 231
mié. 4/16
mié. 4/23
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to Illinois with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 abril 11, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$124
(Flightnetwork)

One-way from

$69
(CheapOair)

Popular in

May

Cheapest in

September

Average price

$268
Provider with most accurate pricing for Washington, D.C. (WAS)-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Chicago (CHI) flights.
Search Deals
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 ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 abril 11, 2025.

This Flightnetwork deal was found by Cheapflights users on 4/10. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/88:10 amBWI - ORD
Nonstop2h 14mSpirit Airlines
lun. 5/129:55 amORD - BWI
1 stop12h 38mSpirit Airlines
Deal found 4/10$124
This Kiwi.com deal was found by Cheapflights users on 4/10. 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.
mié. 5/286:36 pmBWI - MDW
Nonstop2h 07mFrontier
vie. 5/302:53 pmMDW - BWI
Nonstop1h 53mFrontier
Deal found 4/10$125
This CheapOair deal was found by Cheapflights users on 4/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/106:45 amBWI - ORD
1 stop7h 56mMultiple Airlines
dom. 5/1110:33 amORD - BWI
Nonstop1h 46mMultiple Airlines
Deal found 4/10$134
This Southwest deal was found by Cheapflights users on 4/10. 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.
sáb. 7/510:35 amBWI - ORD
Nonstop2h 15mSouthwest
mié. 7/91:50 pmORD - BWI
Nonstop2h 00mSouthwest
Deal found 4/10$169
This United Airlines deal was found by Cheapflights users on 4/9. 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.
dom. 5/116:45 amBWI - ORD
Nonstop2h 17mUnited Airlines
mar. 5/136:30 pmORD - BWI
Nonstop2h 07mUnited Airlines
Deal found 4/9$170
This Southwest deal was found by Cheapflights users on 4/10. 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.
mié. 7/210:35 amBWI - MDW
1 stop3h 45mSouthwest
mar. 7/87:15 amMDW - BWI
Nonstop1h 45mSouthwest
Deal found 4/10$175
This Mytrip deal was found by Cheapflights users on 4/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/192:08 pmBWI - STL
1 stop26h 14mSpirit Airlines
dom. 6/224:17 pmSTL - BWI
1 stop13h 47mSpirit Airlines
Deal found 4/10$176
This Cheapflightsfares deal was found by Cheapflights users on 4/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/26:36 pmBWI - ORD
1 stop5h 35mFrontier
sáb. 5/310:22 amORD - BWI
1 stop5h 17mFrontier
Deal found 4/10$186
This FlightHub deal was found by Cheapflights users on 4/9. 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.
mar. 5/201:34 pmBWI - STL
1 stop11h 10mFrontier
mié. 5/215:45 pmSTL - BWI
1 stop13h 54mFrontier
Deal found 4/9$188
This FlightHub deal was found by Cheapflights users on 4/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/710:40 amBWI - STL
1 stop14h 26mMultiple Airlines
jue. 5/810:10 amSTL - BWI
1 stop7h 42mMultiple Airlines
Deal found 4/10$197
This Delta deal was found by Cheapflights users on 4/10. 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.
mar. 5/276:00 amBWI - MDW
1 stop3h 40mDelta
mié. 5/2810:25 amMDW - BWI
1 stop4h 17mDelta
Deal found 4/10$197
This Delta deal was found by Cheapflights users on 4/10. 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.
mar. 5/275:15 pmBWI - ORD
1 stop4h 06mDelta
sáb. 5/317:05 amORD - BWI
1 stop4h 42mDelta
Deal found 4/10$197

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 abril 11, 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

jue. 5/8

8:10 am-9:24 am

Nonstop2h 14m

Chicago O'Hare Intl

lun. 5/12

9:55 am-11:33 pm

1 stop12h 38m

$124

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

mié. 5/28

6:36 pm-7:43 pm

Nonstop2h 07m

Chicago Midway

vie. 5/30

2:53 pm-5:46 pm

Nonstop1h 53m

$125

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

sáb. 5/10

6:45 am-1:41 pm

1 stop7h 56m

Chicago O'Hare Intl

dom. 5/11

10:33 am-1:19 pm

Nonstop1h 46m

$134

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

sáb. 7/5

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

mié. 7/9

1:50 pm-4:50 pm

Nonstop2h 00m

$169

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

dom. 5/11

6:45 am-8:02 am

Nonstop2h 17m

Chicago O'Hare Intl

mar. 5/13

6:30 pm-9:37 pm

Nonstop2h 07m

$170

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

mié. 7/2

10:35 am-1:20 pm

1 stop3h 45m

Chicago Midway

mar. 7/8

7:15 am-10:00 am

Nonstop1h 45m

$175

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

jue. 6/19

2:08 pm-3:22 pm

1 stop26h 14m

Lambert-St Louis

dom. 6/22

4:17 pm-7:04 am

1 stop13h 47m

$176

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

vie. 5/2

6:36 pm-11:11 pm

1 stop5h 35m

Chicago O'Hare Intl

sáb. 5/3

10:22 am-4:39 pm

1 stop5h 17m

$186

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

mar. 5/20

1:34 pm-11:44 pm

1 stop11h 10m

Lambert-St Louis

mié. 5/21

5:45 pm-8:39 am

1 stop13h 54m

$188

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

mar. 5/27

6:00 am-8:40 am

1 stop3h 40m

Chicago Midway

sáb. 5/31

5:25 pm-10:25 pm

1 stop4h 00m

$197

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/11

Showing 1-10 of 54 results
1
2
3
...
6

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 abril 11, 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 abril 11, 2025.

The most flights from BWI to USIL are scheduled on a Monday (20 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 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 abril 11, 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
4,279 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,279 reviews
Southwest
8.0
Very good
4,279 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,911 reviews
Southwest
8.0
Very good
4,279 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,636 reviews
Southwest
8.0
Very good
4,279 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,279 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Sun Country Air
6.9
Okay
349 reviews
Southwest
8.0
Very good
4,279 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.1

Entertainment

7.6

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 $69. 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 (97%), Japan Airlines (89%) or Air New Zealand (85%) 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 $723, our data indicates the cheapest price to be $97. The most popular route (Baltimore/Washington - Chicago O'Hare Intl), is priced around $97.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baltimore to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Baltimore to Dallas/Fort Worth flights
Dulles Intl to Los Angeles flights
Dulles Intl to Miami flights
Dulles Intl to Dallas/Fort Worth flights
Reagan-National to Los Angeles flights
Dulles Intl to Las Vegas flights
Dulles Intl to San Francisco flights
Baltimore to Miami flights
Reagan-National to Seattle flights
Reagan-National to Las Vegas flights
Reagan-National to Miami flights
Dulles Intl to Seattle flights
Reagan-National to Dallas/Fort Worth flights
Baltimore to Fort Lauderdale flights
Philadelphia to Orlando flights
Baltimore to Las Vegas flights
Dulles Intl to O'Hare Intl flights
Baltimore to Los Angeles flights
Philadelphia to O'Hare Intl flights
Dulles Intl to Orlando flights
Reagan-National to San Francisco flights
Philadelphia to Seattle flights
Dulles Intl to Hobby flights
Philadelphia to Miami flights
Baltimore to Seattle flights
Dulles Intl to Fort Lauderdale flights
Baltimore to Hobby flights
Baltimore to San Francisco flights
Philadelphia to Fort Lauderdale flights
Reagan-National to Atlanta flights
Baltimore to Orlando flights
Dulles Intl to Tampa flights
Reagan-National to O'Hare Intl flights
Reagan-National to Boston flights
Reagan-National to Orlando flights
Philadelphia to Denver flights
Philadelphia to Las Vegas flights
Dulles Intl to Atlanta flights
Dulles Intl to Boston flights
Dulles Intl to George Bush Intcntl flights
Dulles Intl to Sky Harbor Intl flights
Dulles Intl to New Orleans flights
Philadelphia to Atlanta flights
Dulles Intl to Denver flights
Philadelphia to Dallas/Fort Worth flights
Baltimore to Denver flights
Baltimore to O'Hare Intl flights
Baltimore to Boston flights
Dulles Intl to San Diego flights
Baltimore to Atlanta flights

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 abril 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$162FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$59Average$181FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$142Average$432FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$151Average$342FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$164Average$294FlexibilityNo cancel feeOn-time63%
DeltaCheapest$176Average$327FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.