What airlines fly to Illinois?

United Airlines, American Airlines and Frontier are the top three most popular airlines that fly to Illinois from Baltimore according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Baltimore/Washington to Illinois?

Delta, Southwest, and United Airlines are the most popular carriers operating from Baltimore/Washington to Illinois

How many flights depart from Baltimore to Illinois on average per day?

As of April 2026, there are 29 flights per day flying from Baltimore to Illinois. The most common time of day flights depart is 11:00AM, with 47% of flights taking off at noon.

How many flights depart from Baltimore to Illinois on average per week?

As of April 2026, 209 flights take off from Baltimore and land in Illinois each week. The most common flight departure day for this route is Fri, with 19% of weekly flights taking off on this day.

When did momondo last update prices for flights from Baltimore/Washington Airport to Illinois?

Prices for flights from Baltimore/Washington Airport to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Baltimore/Washington Airport to Illinois?

As of April 2026, there are 6 operators available to choose from for flights from Baltimore/Washington Airport to Illinois.

How old do you have to be to fly from Baltimore/Washington Airport to Illinois?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Baltimore/Washington Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$60 Cheap Flights from Baltimore to Illinois in 2026

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Find the cheapest flights from Baltimore to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:52 am - 5:33 pm

BWI

STL

9h 41m

1 stop

5:27 pm - 7:43 am

STL

BWI

13h 16m

1 stop

$121Frontier

Tue, May 19 - Wed, May 27

9:13 pm - 8:55 am

BWI

STL

12h 42m

1 stop

6:33 pm - 7:43 am

STL

BWI

12h 10m

1 stop

$123Frontier

Tue, May 19 - Tue, May 26

7:27 pm - 12:37 pm

BWI

ORD

18h 10m

1 stop

5:05 am - 12:15 pm

ORD

BWI

30h 10m

1 stop

$200Multiple Airlines

Thu, May 28 - Sun, May 31

11:32 am - 12:54 pm

BWI

ORD

2h 22mnonstop

1:18 pm - 11:29 pm

ORD

BWI

9h 11m

1 stop

$204Multiple Airlines

Fri, May 8 - Sat, May 23

4:50 pm - 7:35 pm

BWI

MDW

3h 45m

1 stop

5:00 pm - 7:50 pm

MDW

BWI

1h 50mnonstop

$206Southwest

Wed, May 20 - Wed, May 27

8:30 pm - 9:59 pm

BWI

ORD

2h 29mnonstop

6:00 pm - 9:02 pm

ORD

BWI

2h 02mnonstop

$208United Airlines

Wed, May 6 - Mon, May 11

6:30 am - 7:35 am

BWI

MDW

2h 05mnonstop

9:25 pm - 12:15 am

MDW

BWI

1h 50mnonstop

$208Southwest

Wed, May 6 - Mon, May 11

8:10 pm - 11:58 pm

BWI

PIA

4h 48m

1 stop

4:27 pm - 12:07 am

PIA

BWI

6h 40m

1 stop

$261American Airlines

Sat, May 23 - Sat, May 30

8:09 pm - 11:33 pm

BWI

PIA

4h 24m

1 stop

6:54 pm - 12:06 am

PIA

BWI

4h 12m

1 stop

$276American Airlines

Wed, May 6 - Wed, May 13

8:05 pm - 12:15 am

BWI

PIA

5h 10m

1 stop

2:39 pm - 9:26 pm

PIA

BWI

5h 47m

1 stop

$302United Airlines

Fri, May 29 - Mon, Jun 1

American Airlines flights from Baltimore to Illinois

Our best American Airlines deals on Baltimore to Illinois flight tickets

American Airlines

May 20

BWI6:30 pmBaltimore/Washington

2h 34m

ORD8:04 pmChicago O'Hare Intl

May 24

ORD6:47 pmChicago O'Hare Intl

4h 20m

1 stop

BWI12:07 amBaltimore/Washington

$237

American Airlines

May 16

BWI6:12 amBaltimore/Washington

4h 59m

1 stop

ORD10:11 amChicago O'Hare Intl

May 19

ORD8:10 amChicago O'Hare Intl

2h 06m

BWI11:16 amBaltimore/Washington

$241

American Airlines

May 23

BWI8:10 pmBaltimore/Washington

4h 48m

1 stop

PIA11:58 pmGreater Peoria

May 30

PIA4:27 pmGreater Peoria

6h 40m

1 stop

BWI12:07 amBaltimore/Washington

$261

United Airlines flights from Baltimore to Illinois

Our best United Airlines deals on Baltimore to Illinois flight tickets

United Airlines

May 6

BWI8:30 pmBaltimore/Washington

2h 29m

ORD9:59 pmChicago O'Hare Intl

May 11

ORD6:00 pmChicago O'Hare Intl

2h 02m

BWI9:02 pmBaltimore/Washington

$208

United Airlines

Jun 9

BWI8:15 amBaltimore/Washington

2h 14m

ORD9:29 amChicago O'Hare Intl

Jun 11

ORD9:25 pmChicago O'Hare Intl

2h 08m

BWI12:33 amBaltimore/Washington

$233

United Airlines

May 9

BWI3:27 pmBaltimore/Washington

2h 19m

ORD4:46 pmChicago O'Hare Intl

May 11

ORD6:00 pmChicago O'Hare Intl

2h 02m

BWI9:02 pmBaltimore/Washington

$239

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 5/19

8:52 am-5:33 pm

1 stop9h 41m

Lambert-St Louis

Wed 5/27

5:27 pm-7:43 am

1 stop13h 16m

$121

BaltimoreSt. Louis

BWI - STL

BWISTL

Baltimore/Washington

Tue 5/19

9:13 pm-8:55 am

1 stop12h 42m

Lambert-St Louis

Tue 5/26

6:33 pm-7:43 am

1 stop12h 10m

$123

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 5/28

7:27 pm-12:37 pm

1 stop18h 10m

Chicago O'Hare Intl

Sun 5/31

5:05 am-12:15 pm

1 stop30h 10m

$200

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Fri 5/8

11:32 am-12:54 pm

Nonstop2h 22m

Chicago O'Hare Intl

Sat 5/23

1:18 pm-11:29 pm

1 stop9h 11m

$204

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Wed 5/20

4:50 pm-7:35 pm

1 stop3h 45m

Chicago Midway

Wed 5/27

5:00 pm-7:50 pm

Nonstop1h 50m

$206

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 5/6

8:30 pm-9:59 pm

Nonstop2h 29m

Chicago O'Hare Intl

Mon 5/11

6:00 pm-9:02 pm

Nonstop2h 02m

$208

Quickest round-trip

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Wed 5/6

6:30 am-7:35 am

Nonstop2h 05m

Chicago Midway

Mon 5/11

9:25 pm-12:15 am

Nonstop1h 50m

$208

BaltimorePeoria

BWI - PIA

BWIPIA

Baltimore/Washington

Sat 5/23

8:10 pm-11:58 pm

1 stop4h 48m

Greater Peoria

Sat 5/30

4:27 pm-12:07 am

1 stop6h 40m

$261

BaltimorePeoria

BWI - PIA

BWIPIA

Baltimore/Washington

Wed 5/6

8:09 pm-11:33 pm

1 stop4h 24m

Greater Peoria

Wed 5/13

6:54 pm-12:06 am

1 stop4h 12m

$276

BaltimorePeoria

BWI - PIA

BWIPIA

Baltimore/Washington

Fri 5/29

8:05 pm-12:15 am

1 stop5h 10m

Greater Peoria

Mon 6/1

2:39 pm-9:26 pm

1 stop5h 47m

$302

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Baltimore to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Baltimore is in September. Flight prices, which tend to average around $161, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $171.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Baltimore to Illinois is on a Friday when prices can be found for as low as $282. Flights from Baltimore to Illinois on a Sunday will generally be more expensive and average around $415. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Baltimore to Illinois during this time can be as low as $251. Flights in the morning are often more expensive with an average ticket price of $396.

What is the cheapest Baltimore/Washington to Illinois flight route?

Fly from Baltimore/Washington to Chicago O'Hare Intl for the best Baltimore/Washington - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $266 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Baltimore for as low as $189 on momondo.

What cabin class options are available on Baltimore/Washington to Illinois flights?

There are 4 cabin classes available to choose from on Baltimore/Washington to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Baltimore to Illinois flights?

No. A direct flight is the cheapest option for a flight between Baltimore to Illinois.

Cheap Baltimore to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to Illinois

Best Price Found	$182
Fastest flight time	2h 00m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Baltimore in the past 72 hours is $182. The best round-trip flight deal from Baltimore to Illinois found on momondo in the last 72 hours is $296.

The fastest flight from Baltimore to Illinois takes 2h 00m

Direct flights go from Baltimore to Illinois every day.

There are 98 airports in Illinois. From Baltimore there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from Baltimore to Illinois

When did momondo last update prices for flights from Baltimore/Washington Airport to Illinois?
Prices for flights from Baltimore/Washington Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Baltimore/Washington Airport to Illinois?
As of April 2026, there are 6 operators available to choose from for flights from Baltimore/Washington Airport to Illinois.
How old do you have to be to fly from Baltimore/Washington Airport to Illinois?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Baltimore/Washington Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Baltimore to Illinois?
Based on momondo bookings for flights between Baltimore and Illinois, the leading plane model is Boeing 737 MAX 8, making up 13.39% of the total bookings. Other popular models include Boeing 737-900 with 10.19%, Embraer 175 with 9.60%, and Boeing 737-800 with 9.36%.

Best airlines flying from Baltimore to Illinois

Compare and see reviews for airlines that fly from Baltimore to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $52	Free Cancellation	Rating 6.3 8,618 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $57	Free Cancellation	Rating 5.7 2,986 reviews	Search Frontier flights
United Airlines	PriceFrom $131	Free Cancellation	Rating 7.4 9,602 reviews	Search United Airlines flights
Southwest	PriceFrom $134	Free Cancellation	Rating 8.0 4,328 reviews	Search Southwest flights
American Airlines	PriceFrom $158	Free Cancellation	Rating 7.1 11,593 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Baltimore to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Baltimore to Illinois. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Baltimore to Illinois with flexible booking policies on momondo?

momondo does allow users to show only those flights to Illinois from Baltimore which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Baltimore to Illinois?

Once all potential Baltimore to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Baltimore to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from Baltimore are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.