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$67+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
1 adult, Economy
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Cheap 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 March 11, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/88:00 am
ORD
-
BWI
Nonstop2h 06m
Frontier
Wed 4/226:00 am
BWI
-
ORD
1 stop12h 00m
Frontier
Deal found 3/9$120
This Super.com deal was found by Cheapflights users on 3/9. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:19 pm
ORD
-
BWI
Nonstop2h 05m
Frontier
Mon 4/133:44 pm
BWI
-
ORD
Nonstop2h 23m
Frontier
Deal found 3/9$127
This Booking.com deal was found by Cheapflights users on 3/6. 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.
Thu 4/1612:42 pm
ORD
-
BWI
Nonstop2h 05m
Frontier
Sun 4/197:54 pm
BWI
-
ORD
1 stop23h 56m
Frontier
Deal found 3/6$130
This Frontier deal was found by Cheapflights users on 3/7. 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 4/88:00 am
ORD
-
BWI
Nonstop2h 06m
Frontier
Thu 4/164:42 pm
BWI
-
ORD
Nonstop2h 26m
Frontier
Deal found 3/7$131
This Kiwi.com deal was found by Cheapflights users on 3/7. 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.
Mon 4/136:15 am
ORD
-
BWI
Nonstop2h 06m
Frontier
Thu 4/164:42 pm
BWI
-
ORD
Nonstop2h 26m
Frontier
Deal found 3/7$132
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Tue 4/146:08 pm
ORD
-
BWI
1 stop16h 11m
Frontier
Sun 4/194:44 pm
BWI
-
ORD
Nonstop2h 26m
Frontier
Deal found 3/6$134
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Tue 4/146:08 pm
ORD
-
BWI
1 stop16h 11m
Frontier
Mon 4/204:10 pm
BWI
-
ORD
Nonstop2h 26m
Frontier
Deal found 3/6$135
This Booking.com deal was found by Cheapflights users on 3/6. 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.
Wed 4/88:00 am
ORD
-
BWI
Nonstop2h 06m
Frontier
Sun 4/129:18 am
BWI
-
ORD
1 stop23h 59m
Frontier
Deal found 3/6$136
This Kiwi.com deal was found by Cheapflights users on 3/7. 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.
Sat 4/116:40 am
MDW
-
BWI
1 stop9h 53m
Frontier
Tue 4/2112:17 pm
BWI
-
MDW
1 stop8h 14m
Frontier
Deal found 3/7$138
This Frontier deal was found by Cheapflights users on 3/6. 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.
Fri 5/1512:25 pm
ORD
-
BWI
Nonstop2h 05m
Frontier
Sun 5/174:25 pm
BWI
-
ORD
Nonstop2h 26m
Frontier
Deal found 3/6$138
This Kiwi.com deal was found by Cheapflights users on 3/6. 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.
Mon 4/202:15 pm
MDW
-
BWI
1 stop20h 07m
Frontier
Mon 4/2712:27 pm
BWI
-
MDW
1 stop10h 52m
Frontier
Deal found 3/6$140
This Kiwi.com deal was found by Cheapflights users on 3/8. 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.
Sat 4/186:00 am
MDW
-
BWI
1 stop9h 58m
Frontier
Wed 4/2212:17 pm
BWI
-
MDW
1 stop8h 14m
Frontier
Deal found 3/8$144

Find flight deals from Illinois to Baltimore

Keep the following information in mind while searching for Illinois to Baltimore flight deals. Data was last updated March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$120
(Kiwi.com)

One-way from

$67
(Trip.com)

Popular in

November

Cheapest in

August

Average price

$298
Provider with most accurate pricing for Chicago (CHI)-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Washington, D.C. (WAS) flights.
Search Deals
From Illinois to Baltimore/Washington
Search Deals
One-way flight from Illinois to Baltimore/Washington
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 11, 2026.
Use the filters below to find and compare flights from Illinois to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Mon 4/20

9:15 pm-12:05 am

Nonstop1h 50m

Baltimore/Washington

Mon 4/27

7:10 pm-8:20 pm

Nonstop2h 10m

$197
Quickest round-trip

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Thu 4/30

9:15 pm-12:05 am

Nonstop1h 50m

Baltimore/Washington

Sun 5/3

7:45 am-8:45 am

Nonstop2h 00m

$197

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Thu 4/16

9:15 pm-12:05 am

Nonstop1h 50m

Baltimore/Washington

Sun 4/19

7:45 am-8:45 am

Nonstop2h 00m

$197

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Tue 4/14

7:00 am-9:50 am

Nonstop1h 50m

Baltimore/Washington

Thu 4/16

10:45 am-1:10 pm

1 stop3h 25m

$203

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 4/30

5:15 am-10:46 am

1 stop4h 31m

Baltimore/Washington

Tue 5/5

10:42 am-4:42 pm

1 stop7h 00m

$217

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Wed 4/15

7:00 am-11:39 am

1 stop3h 39m

Baltimore/Washington

Wed 4/15

7:26 pm-11:59 pm

1 stop5h 33m

$217

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Thu 4/9

9:15 pm-12:05 am

Nonstop1h 50m

Baltimore/Washington

Sun 4/12

10:35 pm-11:40 pm

Nonstop2h 05m

$237

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Mon 4/6

9:40 pm-12:25 am

Nonstop1h 45m

Baltimore/Washington

Mon 4/13

6:05 am-7:10 am

Nonstop2h 05m

$241

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Thu 4/9

9:00 am-11:50 am

Nonstop1h 50m

Baltimore/Washington

Mon 4/13

6:05 am-7:10 am

Nonstop2h 05m

$245

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Wed 4/1

6:30 am-9:25 am

Nonstop1h 55m

Baltimore/Washington

Mon 4/6

10:25 pm-11:35 pm

Nonstop2h 10m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Illinois to Baltimore (average of $56). Flying from Illinois to Baltimore in April is currently the most expensive (average of $159). 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 March 11, 2026.

When flying from Illinois to Baltimore, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 22% versus a flight in the evening.

What is the cheapest day to fly from Illinois to Baltimore?

Use this chart to determine the cheapest time to fly round-trip from Illinois to Baltimore. Price data was last updated on February 21, 2026.

Travelers seeking maximum savings on their Illinois to Baltimore flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 March 11, 2026.

The most flights from USIL to BWI 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 (13 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 1h 50m. 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 ($36), Spirit Airlines ($38), and United Airlines ($74).

  • 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: CommutAir (100%), Volaris (100%), United Airlines (83%).

  • What are the cheapest flights from Illinois to Baltimore?

    While on average a flight from Illinois to Baltimore is generally $335, our data shows the cheapest flight currently is $37. When looking at the most popular route, (Chicago O'Hare Intl - Baltimore/Washington), you can expect to pay $148 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, February is the cheapest month in which you can book a flight from Illinois to Baltimore (average of $56). Flying from Illinois to Baltimore in April is currently the most expensive (average of $159). 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 Illinois to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.
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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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$42Average$118FlexibilityNo cancel feeOn-time65%
FrontierCheapest$56Average$162FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$114Average$354FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$152Average$377FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$157Average$268FlexibilityNo cancel feeOn-time63%
DeltaCheapest$183Average$361FlexibilityNo cancel feeOn-timeN/A

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