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$66+ Cheap flights from Illinois to Baltimore (BWI)

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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
août 25 — sept. 11
lun. 8/25
lun. 9/1
1 adult, Economy
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Cheap flight deals from Illinois to Baltimore

Keep the following information in mind while searching for Illinois to Baltimore flight deals. Data was last updated août 20, 2025.

Round-trip from

$100
(FlightHub)

One-way from

$66
(FlightHub)

Popular in

January

Cheapest in

August

Average price

$169
From Illinois to Baltimore/Washington
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One-way flight from Illinois to Baltimore/Washington
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Highest demand for flights based on searches. 5% potential increase in price ($13 potential increase over avg. RT price).
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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 August 2025
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Find flight deals from Illinois to Baltimore

Cheapest flights from Illinois to Baltimore
Explore the most affordable flight options available from Illinois to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on août 20, 2025.

This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/51:49 pmMDW - BWI
Nonstop2h 01mFrontier
lun. 9/85:40 pmBWI - MDW
Nonstop2h 03mFrontier
Deal found 8/18$100
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 9/1311:57 amORD - BWI
1 stop10h 28mSpirit Airlines
jeu. 9/189:57 amBWI - ORD
Nonstop2h 13mSpirit Airlines
Deal found 8/18$100
This Cheapflightsfares deal was found by Cheapflights users on 8/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/303:40 pmMDW - BWI
Nonstop1h 55mFrontier
lun. 11/37:25 pmBWI - MDW
Nonstop2h 06mFrontier
Deal found 8/19$102
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 10/313:40 pmMDW - BWI
Nonstop1h 55mFrontier
lun. 11/37:25 pmBWI - MDW
Nonstop2h 06mFrontier
Deal found 8/17$103
This Frontier deal was found by Cheapflights users on 8/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/46:11 pmORD - BWI
Nonstop2h 03mFrontier
dim. 9/79:59 pmBWI - ORD
Nonstop2h 21mFrontier
Deal found 8/20$103
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/41:49 pmMDW - BWI
Nonstop2h 01mFrontier
lun. 9/85:40 pmBWI - MDW
Nonstop2h 03mFrontier
Deal found 8/18$104
This FlightHub deal was found by Cheapflights users on 8/19. 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.
lun. 9/226:11 pmORD - BWI
Nonstop2h 03mFrontier
jeu. 9/259:59 pmBWI - ORD
Nonstop2h 21mFrontier
Deal found 8/19$104
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/181:49 pmMDW - BWI
Nonstop2h 01mFrontier
dim. 9/215:40 pmBWI - MDW
Nonstop2h 03mFrontier
Deal found 8/18$105
This Frontier deal was found by Cheapflights users on 8/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 9/46:11 pmORD - BWI
Nonstop2h 03mFrontier
ven. 9/129:59 pmBWI - ORD
Nonstop2h 21mFrontier
Deal found 8/20$105
This Cheapflightsfares deal was found by Cheapflights users on 8/18. 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.
jeu. 10/21:49 pmMDW - BWI
Nonstop2h 01mFrontier
dim. 10/55:40 pmBWI - MDW
Nonstop2h 03mFrontier
Deal found 8/18$106
This Cheapflightsfares deal was found by Cheapflights users on 8/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/51:49 pmMDW - BWI
Nonstop2h 01mFrontier
dim. 9/215:40 pmBWI - MDW
Nonstop2h 03mFrontier
Deal found 8/20$107
This FlightHub deal was found by Cheapflights users on 8/20. 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.
ven. 9/126:11 pmORD - BWI
Nonstop2h 03mFrontier
lun. 9/159:59 pmBWI - ORD
Nonstop2h 21mFrontier
Deal found 8/20$107

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Baltimore 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 août 20, 2025.
Use the filters below to find and compare flights from Illinois to Baltimore that are best for you.

Fly from

Illinois

Fly to

Baltimore

Route

Depart

Return

Price

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

ven. 9/5

1:49 pm-4:50 pm

Nonstop2h 01m

Baltimore/Washington

lun. 9/8

5:40 pm-6:43 pm

Nonstop2h 03m

$100

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

sam. 9/13

11:57 am-11:25 pm

1 stop10h 28m

Baltimore/Washington

jeu. 9/18

9:57 am-11:10 am

Nonstop2h 13m

$100

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

lun. 9/8

6:11 pm-9:14 pm

Nonstop2h 03m

Baltimore/Washington

ven. 9/12

9:59 pm-11:20 pm

Nonstop2h 21m

$100

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

mar. 9/16

11:57 am-11:25 pm

1 stop10h 28m

Baltimore/Washington

jeu. 9/18

9:57 am-11:10 am

Nonstop2h 13m

$100

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

sam. 9/20

5:05 am-2:47 pm

1 stop8h 42m

Baltimore/Washington

dim. 9/21

9:57 am-11:10 am

Nonstop2h 13m

$100

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

jeu. 10/30

3:40 pm-6:35 pm

Nonstop1h 55m

Baltimore/Washington

lun. 11/3

7:25 pm-8:31 pm

Nonstop2h 06m

$102

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

ven. 10/31

3:40 pm-6:35 pm

Nonstop1h 55m

Baltimore/Washington

lun. 11/3

7:25 pm-8:31 pm

Nonstop2h 06m

$103

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

lun. 9/15

1:49 pm-4:50 pm

Nonstop2h 01m

Baltimore/Washington

lun. 9/22

5:40 pm-6:43 pm

Nonstop2h 03m

$103

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

dim. 8/31

8:40 am-11:34 am

Nonstop1h 54m

Baltimore/Washington

ven. 9/5

5:40 pm-6:43 pm

Nonstop2h 03m

$103

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

lun. 9/22

6:11 pm-9:14 pm

Nonstop2h 03m

Baltimore/Washington

jeu. 9/25

9:59 pm-11:20 pm

Nonstop2h 21m

$104

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from Illinois 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 Illinois to Baltimore

What is the cheapest month to book a flight from Illinois to Baltimore?

Currently, August is the cheapest month in which you can book a flight from Illinois to Baltimore (average of $241). Flying from Illinois to Baltimore in March is currently the most expensive (average of $290). 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 IL to BWI?

Find hourly flight availability from Illinois to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated août 20, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Baltimore as you normally would.

Weekly flight availability from Illinois to Baltimore

Explore weekly flight availability from Illinois to Baltimore. 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 août 20, 2025.

The most flights from USIL to BWI 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 (2 on average).

Related info for your journey

Find useful and relevant information for your journey from Illinois to Baltimore. 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 into for flights to Baltimore from Illinois?

    If you book a flight to Baltimore from Illinois, you will be flying to Baltimore/Washington, which is the city’s only airport. Baltimore/Washington (BWI) is located 8.5 mi from the center of Baltimore.

  • How long is the flight from Illinois to Baltimore?

    Departing from Illinois to Baltimore will take you 2h 01m. The distance from Illinois to Baltimore is about 609 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to Baltimore one-way?

    The cheapest airlines for a one-way flight from Illinois to Baltimore are Frontier ($66), Spirit Airlines ($69), and American Airlines ($126).

  • What are the most popular routes from Illinois to Baltimore?

    The most popular flight routes from Illinois to Baltimore are Chicago O'Hare Intl - Baltimore/Washington, Chicago Midway - Baltimore/Washington and Lambert-St Louis - Baltimore/Washington.

  • What are the most reliable airlines from Illinois to Baltimore?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Baltimore on time: Republic Airways (100%), Spirit Airlines (80%), Alaska Airlines (79%).

  • What are the cheapest flights from Illinois to Baltimore?

    While on average a flight from Illinois to Baltimore is generally $183, our data shows the cheapest flight currently is $69. When looking at the most popular route, (Chicago O'Hare Intl - Baltimore/Washington), you can expect to pay $84 for that flight.

  • Can I find deals for flights from Illinois to Baltimore that include hotel bookings?

    Yes. In addition to deals on Illinois to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Baltimore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Baltimore.

  • Can I find deals for business class flights from Illinois to Baltimore?

    Yes. Cheapflights offers flight deals from Illinois to Baltimore 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 Illinois to Baltimore?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Baltimore (average of $241). Flying from Illinois to Baltimore in March is currently the most expensive (average of $290). 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 Illinois to Baltimore

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Top 6 airlines flying from Illinois to Baltimore

Discover the top 6 airlines that operate flights from Illinois to Baltimore. 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 août 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$46Average$173FlexibilityNo cancel feeOn-time65%
FrontierCheapest$78Average$174FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$137Average$415FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$139Average$274FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$158Average$315FlexibilityNo cancel feeOn-time69%
DeltaCheapest$183Average$344FlexibilityNo cancel feeOn-timeN/A

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