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$51+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
fev 25 — mar 41
ter 2/25
ter 3/4
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 fevereiro 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$95
(Mytrip)

One-way from

$51
(Mytrip)

Popular in

March

Cheapest in

September

Average price

$244
Provider with most accurate pricing for Washington, D.C. (WAS)-Chicago (CHI) flight deals.
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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. 0% potential increase in price ($2 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 February 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 fevereiro 20, 2025.

This FlightHub deal was found by Cheapflights users on 2/20. 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.
qua 5/145:47 pmBWI - ORD
1 stop5h 41mSpirit Airlines
sáb 5/176:00 amORD - BWI
1 stop9h 51mSpirit Airlines
Deal found 2/20$93
This Frontier deal was found by Cheapflights users on 2/19. 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.
qua 3/56:00 amBWI - ORD
1 stop11h 31mFrontier
ter 3/115:43 pmORD - BWI
1 stop5h 34mFrontier
Deal found 2/19$100
This Cheapflightsfares deal was found by Cheapflights users on 2/18. 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.
sex 3/284:11 pmBWI - MDW
Nonstop2h 12mFrontier
qua 4/21:05 pmMDW - BWI
Nonstop1h 50mFrontier
Deal found 2/18$105
This Frontier deal was found by Cheapflights users on 2/19. 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.
qui 4/33:53 pmBWI - STL
1 stop8h 53mFrontier
seg 4/74:57 pmSTL - BWI
1 stop21h 00mFrontier
Deal found 2/19$110
This Priceline deal was found by Cheapflights users on 2/19. 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.
seg 6/25:47 pmBWI - ORD
1 stop5h 41mMultiple Airlines
sáb 6/76:01 pmORD - BWI
1 stop5h 34mMultiple Airlines
Deal found 2/19$117
This Southwest deal was found by Cheapflights users on 2/17. 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.
ter 3/256:45 amBWI - MDW
Nonstop2h 10mSouthwest
qua 3/266:35 pmMDW - BWI
Nonstop1h 45mSouthwest
Deal found 2/17$139
This CheapOair deal was found by Cheapflights users on 2/20. 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.
ter 5/139:00 amBWI - STL
1 stop10h 32mMultiple Airlines
sáb 5/175:47 pmSTL - BWI
1 stop24h 29mMultiple Airlines
Deal found 2/20$154
This FlightHub deal was found by Cheapflights users on 2/19. 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.
seg 4/216:33 pmBWI - STL
1 stop23h 43mSpirit Airlines
qui 4/246:11 pmSTL - BWI
1 stop5h 45mSpirit Airlines
Deal found 2/19$165
This American Airlines deal was found by Cheapflights users on 2/19. 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.
sáb 4/57:30 amBWI - ORD
Nonstop2h 10mAmerican Airlines
sáb 4/126:45 pmORD - BWI
Nonstop2h 04mAmerican Airlines
Deal found 2/19$188
This Mytrip deal was found by Cheapflights users on 2/19. 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.
qui 3/69:51 pmBWI - EVV
1 stop21h 51mMultiple Airlines
seg 3/107:22 pmEVV - BWI
2 stops27h 55mMultiple Airlines
Deal found 2/19$191
This Southwest deal was found by Cheapflights users on 2/18. 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.
seg 4/76:05 amBWI - STL
Nonstop2h 25mSouthwest
qui 4/108:05 amSTL - BWI
1 stop3h 20mSouthwest
Deal found 2/18$193
This Southwest deal was found by Cheapflights users on 2/19. 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.
qua 3/58:55 pmBWI - ORD
Nonstop2h 25mSouthwest
qua 3/1211:25 amORD - BWI
Nonstop1h 50mSouthwest
Deal found 2/19$194

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 fevereiro 20, 2025.

Fly from

Baltimore

Fly to

Illinois

Route

Depart

Return

Price

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

qua 5/14

5:47 pm-10:28 pm

1 stop5h 41m

Chicago O'Hare Intl

sáb 5/17

6:00 am-4:51 pm

1 stop9h 51m

$93

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

qua 3/5

6:00 am-4:31 pm

1 stop11h 31m

Chicago O'Hare Intl

ter 3/11

5:43 pm-12:17 am

1 stop5h 34m

$100

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

sex 3/28

4:11 pm-5:23 pm

Nonstop2h 12m

Chicago Midway

qua 4/2

1:05 pm-3:55 pm

Nonstop1h 50m

$105

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

qui 4/3

3:53 pm-11:46 pm

1 stop8h 53m

Lambert-St Louis

seg 4/7

4:57 pm-2:57 pm

1 stop21h 00m

$110

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

seg 6/2

5:47 pm-10:28 pm

1 stop5h 41m

Chicago O'Hare Intl

sáb 6/7

6:01 pm-12:35 am

1 stop5h 34m

$117

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

ter 3/25

6:45 am-7:55 am

Nonstop2h 10m

Chicago Midway

qua 3/26

6:35 pm-9:20 pm

Nonstop1h 45m

$139

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

ter 5/13

9:00 am-6:32 pm

1 stop10h 32m

Lambert-St Louis

sáb 5/17

5:47 pm-7:16 pm

1 stop24h 29m

$154

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

seg 4/21

6:33 pm-5:16 pm

1 stop23h 43m

Lambert-St Louis

qui 4/24

6:11 pm-12:56 am

1 stop5h 45m

$165

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

seg 4/7

5:00 am-8:30 am

1 stop4h 30m

Lambert-St Louis

qua 4/9

10:17 am-5:44 pm

1 stop6h 27m

$178

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

sáb 4/5

7:30 am-8:40 am

Nonstop2h 10m

Chicago O'Hare Intl

ter 4/8

6:45 pm-9:49 pm

Nonstop2h 04m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 50 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 $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 fevereiro 20, 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 fevereiro 20, 2025.

The most flights from BWI to USIL are scheduled on a Monday (19 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 fevereiro 20, 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
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,412 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,227 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,771 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Sun Country Air
7.0
Good
374 reviews
Southwest
8.1
Very good
4,412 reviews

Entertainment

7.6

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 $51. 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 (92%), Royal Jordanian (90%) or United Airlines (89%) 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 $1,124, our data indicates the cheapest price to be $98. The most popular route (Baltimore/Washington - Chicago O'Hare Intl), is priced around $95.

  • 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

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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 fevereiro 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$155FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$101Average$197FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$133Average$432FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$149Average$357FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$158Average$289FlexibilityNo cancel feeOn-time63%
DeltaCheapest$176Average$266FlexibilityNo cancel feeOn-timeN/A
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