HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Baltimore

$63+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BWI
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Baltimore 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 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 January 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/85:25 am
ORD
-
BWI
Nonstop2h 00m
Frontier
Thu 2/127:19 pm
BWI
-
ORD
Nonstop2h 27m
Frontier
Deal found 1/19$83
This Frontier deal was found by Cheapflights users on 1/19. 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.
Thu 2/58:10 am
ORD
-
BWI
Nonstop2h 00m
Frontier
Thu 2/127:19 pm
BWI
-
ORD
Nonstop2h 27m
Frontier
Deal found 1/19$90
This Super.com deal was found by Cheapflights users on 1/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/66:05 am
ORD
-
BWI
Nonstop2h 00m
Frontier
Mon 2/912:40 pm
BWI
-
ORD
Nonstop2h 27m
Frontier
Deal found 1/20$92
This CheapOair deal was found by Cheapflights users on 1/18. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2511:51 am
ORD
-
BWI
1 stop11h 40m
Frontier
Thu 2/269:19 am
BWI
-
ORD
Nonstop2h 27m
Frontier
Deal found 1/18$93
This Frontier deal was found by Cheapflights users on 1/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/28:45 am
ORD
-
BWI
Nonstop2h 00m
Frontier
Sun 2/89:20 am
BWI
-
ORD
Nonstop2h 27m
Frontier
Deal found 1/18$94
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/193:15 pm
ORD
-
BWI
Nonstop2h 09m
Frontier
Mon 2/236:08 pm
BWI
-
ORD
1 stop17h 43m
Frontier
Deal found 1/20$95
This Frontier deal was found by Cheapflights users on 1/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/28:45 am
ORD
-
BWI
Nonstop2h 00m
Frontier
Thu 2/127:19 pm
BWI
-
ORD
Nonstop2h 27m
Frontier
Deal found 1/18$96
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/15:25 am
ORD
-
BWI
Nonstop2h 00m
Frontier
Mon 2/912:40 pm
BWI
-
ORD
Nonstop2h 27m
Frontier
Deal found 1/18$101
This Expedia deal was found by Cheapflights users on 1/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/286:25 am
MDW
-
BWI
1 stop10h 22m
Frontier
Wed 3/48:25 pm
BWI
-
MDW
1 stop19h 01m
Frontier
Deal found 1/20$128
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:00 am
MDW
-
BWI
1 stop9h 47m
Frontier
Mon 3/26:08 pm
BWI
-
MDW
1 stop25h 59m
Frontier
Deal found 1/19$131
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/176:00 am
MDW
-
BWI
1 stop17h 31m
Frontier
Tue 2/245:58 pm
BWI
-
MDW
1 stop26h 09m
Frontier
Deal found 1/19$133
This Southwest deal was found by Cheapflights users on 1/19. 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.
Wed 2/259:50 am
MDW
-
BWI
Nonstop1h 50m
Southwest
Mon 3/27:40 am
BWI
-
MDW
Nonstop2h 20m
Southwest
Deal found 1/19$139

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 January 20, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$83
(Kiwi.com)

One-way from

$63
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$288
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. 9% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 20, 2026.
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

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 2/5

8:10 am-11:10 am

Nonstop2h 00m

Baltimore/Washington

Sun 2/8

9:20 am-10:47 am

Nonstop2h 27m

$103

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Tue 2/17

6:15 pm-9:17 pm

Nonstop2h 02m

Baltimore/Washington

Tue 2/24

10:30 am-11:53 am

Nonstop2h 23m

$139

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Wed 2/18

11:00 am-2:01 pm

Nonstop2h 01m

Baltimore/Washington

Wed 2/25

5:20 pm-6:43 pm

Nonstop2h 23m

$139

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Sat 2/21

6:15 pm-9:17 pm

Nonstop2h 02m

Baltimore/Washington

Mon 2/23

6:30 am-7:53 am

Nonstop2h 23m

$139

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Mon 2/23

6:15 pm-9:17 pm

Nonstop2h 02m

Baltimore/Washington

Thu 2/26

6:30 am-7:53 am

Nonstop2h 23m

$139

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Wed 2/11

11:05 am-2:11 pm

Nonstop2h 06m

Baltimore/Washington

Tue 2/17

5:20 pm-6:43 pm

Nonstop2h 23m

$149

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Fri 2/20

6:15 pm-9:17 pm

Nonstop2h 02m

Baltimore/Washington

Mon 2/23

6:30 am-7:53 am

Nonstop2h 23m

$158

ChicagoBaltimore

ORD - BWI

ORDBWI

Chicago O'Hare Intl

Thu 2/19

6:15 pm-9:17 pm

Nonstop2h 02m

Baltimore/Washington

Sun 2/22

6:30 am-7:53 am

Nonstop2h 23m

$158

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Wed 3/18

6:00 am-2:24 pm

1 stop7h 24m

Baltimore/Washington

Tue 3/24

3:19 pm-10:19 pm

1 stop8h 00m

$161

ChicagoBaltimore

MDW - BWI

MDWBWI

Chicago Midway

Wed 2/18

9:50 am-12:40 pm

Nonstop1h 50m

Baltimore/Washington

Wed 2/25

11:05 am-1:55 pm

1 stop3h 50m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 60 results
1
2
3
...
6

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 $58). Flying from Illinois to Baltimore in April is currently the most expensive (average of $169). 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 January 20, 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 19% 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 January 17, 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 January 20, 2026.

The most flights from USIL to BWI are scheduled on a Monday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 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. Most flights are nonstop.

  • 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 Spirit Airlines ($38), Frontier ($39), 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: Alaska Airlines (73%), Royal Jordanian (72%), Japan Airlines (69%).

  • What are the cheapest flights from Illinois to Baltimore?

    While on average a flight from Illinois to Baltimore is generally $297, our data shows the cheapest flight currently is $29. When looking at the most popular route, (Chicago O'Hare Intl - Baltimore/Washington), you can expect to pay $98 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 $58). Flying from Illinois to Baltimore in April is currently the most expensive (average of $169). 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 Illinois to Baltimore

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

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 January 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$42Average$119FlexibilityNo cancel feeOn-time65%
FrontierCheapest$57Average$160FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$114Average$308FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$148Average$376FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$158Average$278FlexibilityNo cancel feeOn-time63%
DeltaCheapest$183Average$359FlexibilityNo 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.