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

Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from Baltimore/Washington to Chicago

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

As of August 2025, there are 163 flights per week flying from Baltimore to Chicago. The most common day of the week flights depart is Mon, with 21% of flights taking off on this day.

What airlines fly to Chicago?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Chicago from Baltimore according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Chicago. Keep in mind that there are 6 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

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

As of August 2025, 23 flights take off from Baltimore and land in Chicago each day. The most common flight departure time for this route is 10:00AM, with 47% of daily flights taking off at noon.

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

Prices for flights from Baltimore/Washington Airport to Chicago are updated daily.

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

The number of operators available for flights from Baltimore/Washington Airport to Chicago is 6 as of August 2025.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baltimore/Washington Airport to Chicago.

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

The travel and health documents required for your trip to Chicago 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 Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$69 Cheap Flights from Baltimore to Chicago (BWI-CHI) in 2025

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Find the cheapest flights from Baltimore to Chicago (BWI-CHI)

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

4:26 pm - 5:27 pmBWI-MDW

2h 01mnonstop

4:12 pm - 7:08 pmMDW-BWI

1h 56mnonstop

$105Frontier

Find Deal

Sun, Oct 12 - Fri, Oct 17

5:40 pm - 6:43 pmBWI-MDW

2h 03mnonstop

5:15 pm - 12:17 amMDW-BWI

6h 02m1 stop

$106Frontier

Find Deal

Mon, Sep 22 - Mon, Sep 29

4:20 pm - 9:58 pmBWI-ORD

6h 38m1 stop

6:11 pm - 9:14 pmORD-BWI

2h 03mnonstop

$106

Find Deal

Sat, Sep 20 - Mon, Sep 22

5:40 pm - 6:43 pmBWI-MDW

2h 03mnonstop

8:19 am - 3:17 pmMDW-BWI

5h 58m1 stop

$107Frontier

Find Deal

Thu, Sep 18 - Mon, Sep 22

9:59 pm - 11:20 pmBWI-ORD

2h 21mnonstop

6:00 am - 5:42 pmORD-BWI

10h 42m1 stop

$107Frontier

Find Deal

Fri, Sep 19 - Mon, Sep 22

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

11:57 am - 11:25 pmORD-BWI

10h 28m1 stop

$113Spirit Airlines

Find Deal

Thu, Sep 18 - Sat, Sep 20

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

6:10 am - 9:02 amORD-BWI

1h 52mnonstop

$118Spirit Airlines

Find Deal

Thu, Sep 11 - Sun, Sep 14

9:57 am - 11:10 amBWI-ORD

2h 13mnonstop

6:11 pm - 9:14 pmORD-BWI

2h 03mnonstop

$119

Find Deal

Thu, Sep 25 - Thu, Sep 25

5:20 pm - 6:35 pmBWI-ORD

2h 15mnonstop

11:05 am - 2:08 pmORD-BWI

2h 03mnonstop

$139United Airlines

Find Deal

Wed, Oct 1 - Sat, Oct 4

6:15 am - 7:30 amBWI-ORD

2h 15mnonstop

2:22 pm - 5:26 pmORD-BWI

2h 04mnonstop

$149United Airlines

Find Deal

Wed, Sep 24 - Wed, Oct 1

Frontier flights from Baltimore to Chicago

Our best Frontier deals on Baltimore to Chicago flight tickets

Frontier

Oct 12

BWI4:26 pmBaltimore/Washington

2h 01m

MDW5:27 pmChicago Midway

Oct 17

MDW4:12 pmChicago Midway

1h 56m

BWI7:08 pmBaltimore/Washington

$105

Find similar

Frontier

Sep 22

BWI5:40 pmBaltimore/Washington

2h 03m

MDW6:43 pmChicago Midway

Sep 29

MDW5:15 pmChicago Midway

6h 02m

1 stop

BWI12:17 amBaltimore/Washington

$106

Find similar

Frontier

Sep 5

BWI9:59 pmBaltimore/Washington

2h 21m

ORD11:20 pmChicago O'Hare Intl

Sep 7

ORD8:05 amChicago O'Hare Intl

11h 00m

1 stop

BWI8:05 pmBaltimore/Washington

$107

Find similar

Spirit Airlines flights from Baltimore to Chicago

Our best Spirit Airlines deals on Baltimore to Chicago flight tickets

Spirit Airlines

Sep 4

BWI9:57 amBaltimore/Washington

2h 13m

ORD11:10 amChicago O'Hare Intl

Oct 1

ORD6:30 amChicago O'Hare Intl

8h 02m

1 stop

BWI3:32 pmBaltimore/Washington

$112

Find similar

Spirit Airlines

Sep 18

BWI9:57 amBaltimore/Washington

2h 13m

ORD11:10 amChicago O'Hare Intl

Sep 20

ORD11:57 amChicago O'Hare Intl

10h 28m

1 stop

BWI11:25 pmBaltimore/Washington

$113

Find similar

Spirit Airlines

Sep 11

BWI9:57 amBaltimore/Washington

2h 13m

ORD11:10 amChicago O'Hare Intl

Sep 14

ORD6:10 amChicago O'Hare Intl

1h 52m

BWI9:02 amBaltimore/Washington

$118

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Sun 10/12

4:26 pm-5:27 pm

Nonstop2h 01m

Chicago Midway

Fri 10/17

4:12 pm-7:08 pm

Nonstop1h 56m

$105

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Mon 9/22

5:40 pm-6:43 pm

Nonstop2h 03m

Chicago Midway

Mon 9/29

5:15 pm-12:17 am

1 stop6h 02m

$106

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Sat 9/20

4:20 pm-9:58 pm

1 stop6h 38m

Chicago O'Hare Intl

Mon 9/22

6:11 pm-9:14 pm

Nonstop2h 03m

$106

BaltimoreChicago

BWI - MDW

BWIMDW

Baltimore/Washington

Thu 9/18

5:40 pm-6:43 pm

Nonstop2h 03m

Chicago Midway

Mon 9/22

8:19 am-3:17 pm

1 stop5h 58m

$107

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Fri 9/19

9:59 pm-11:20 pm

Nonstop2h 21m

Chicago O'Hare Intl

Mon 9/22

6:00 am-5:42 pm

1 stop10h 42m

$107

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 9/18

9:57 am-11:10 am

Nonstop2h 13m

Chicago O'Hare Intl

Sat 9/20

11:57 am-11:25 pm

1 stop10h 28m

$113

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 9/11

9:57 am-11:10 am

Nonstop2h 13m

Chicago O'Hare Intl

Sun 9/14

6:10 am-9:02 am

Nonstop1h 52m

$118

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 9/25

9:57 am-11:10 am

Nonstop2h 13m

Chicago O'Hare Intl

Thu 9/25

6:11 pm-9:14 pm

Nonstop2h 03m

$119

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 10/1

5:20 pm-6:35 pm

Nonstop2h 15m

Chicago O'Hare Intl

Sat 10/4

11:05 am-2:08 pm

Nonstop2h 03m

$139

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 9/24

6:15 am-7:30 am

Nonstop2h 15m

Chicago O'Hare Intl

Wed 10/1

2:22 pm-5:26 pm

Nonstop2h 04m

$149

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 Chicago

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 Chicago?

The month of January is, on average, the cheapest month to fly to Chicago from Baltimore, with most prices found around $174. If you’re not able to fly to Chicago in January, then September is your next best option. Flight prices from Baltimore to Chicago during September average around $185.

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

The cheapest day to depart on your flight to Chicago is on a Friday when prices can be found for as low as $387. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Baltimore to Chicago for around $497.

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

Our most recent data shows that the best time of day to fly to Chicago is in the evening. Flights from Baltimore to Chicago during this time can be as low as $333. In contrast, the most expensive time of day to depart to Chicago is in the afternoon when prices are around $439.

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

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

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

You are more likely to see cheaper flights to Chicago from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around $283 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Baltimore for as low as $227 on momondo.

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

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

How have Baltimore to Chicago flight prices changed over time?

As of August 2025, prices for Baltimore to Chicago flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from Baltimore to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from Baltimore to Chicago according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Baltimore to Chicago (BWI to CHI) flight deals and tips

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

Best Price Found	$99
Fastest flight time	1h 55m
Direct flights	Every day
Airports in Chicago	2 airports

The best one-way flight to Chicago from Baltimore in the past 72 hours is $99. The best round-trip flight deal from Baltimore to Chicago found on momondo in the last 72 hours is $152.

The fastest flight from Baltimore to Chicago takes 1h 55m

Direct flights go from Baltimore to Chicago every day.

There are 2 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

Search flight deals

How far is Baltimore/Washington to Chicago by plane?
The distance between Baltimore/Washington and Chicago is about 604.1 mi. Typically, this will take 2h 01m by plane in normal conditions.
When did momondo last update prices for flights from Baltimore/Washington Airport to Chicago?
Prices for flights from Baltimore/Washington Airport to Chicago are updated daily.
How many operators does momondo search for flights from Baltimore/Washington Airport to Chicago?
The number of operators available for flights from Baltimore/Washington Airport to Chicago is 6 as of August 2025.
How old do you have to be to fly from Baltimore/Washington Airport to Chicago?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Baltimore/Washington Airport to Chicago.
What documentation or ID do you need to fly to Chicago?
The travel and health documents required for your trip to Chicago 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 Chicago. 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 Chicago?
Based on momondo bookings for flights between Baltimore and Chicago, the leading plane model is Airbus A320neo, making up 10.12% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 9.60%, Boeing 737-900 with 9.35%, and Airbus A320-100/200 with 9.09%.
What is the most popular airline from Baltimore to Chicago?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Baltimore to Chicago is Frontier (40% of total bookings). The next most popular airlines are Southwest (34%), United Airlines (16%), and American Airlines (8%).

Best airlines flying from Baltimore to Chicago

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

Airline	Rating	Free Cancellation	Price
Spirit Airlines	PriceFrom $46	Free Cancellation	Rating 6.3 8,030 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $62	Free Cancellation	Rating 5.8 3,202 reviews	Search Frontier flights
Delta	PriceFrom $98	Free Cancellation	Rating 7.9 7,977 reviews	Search Delta flights
Southwest	PriceFrom $157	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights
United Airlines	PriceFrom $158	Free Cancellation	Rating 7.4 8,945 reviews	Search United Airlines flights
American Airlines	PriceFrom $159	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Southwest Flights From Baltimore to Chicago
Southwest is one of the most popular airlines flying from Baltimore to Chicago, operating 65 flights/week on average for this route. A good Southwest flight deal for Baltimore to Chicago starts from $157 round-trip, up to an average price of $289. Our users have rated Southwest at 8.0/10.
United Airlines Flights From Baltimore to Chicago
The best United Airlines deal for Baltimore to Chicago flight tickets found on momondo in the last 72 hours was $158, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $307 round-trip. United Airlines operates 22 flights out of Baltimore into Chicago in an average week, so prices vary by time and availability. 8,945 United Airlines reviews by users on momondo have scored the airline at 7.4/10.

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Benton Harbor

Saint Joseph

Lansing

Portage

Schererville

Valparaiso

Crown Point

Munster

Chesterton

Monticello

Porter

Griffith

Saint John

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Chicago from Baltimore.

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

Yes. All flights to Chicago from Baltimore on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Baltimore to Chicago 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 Chicago right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Baltimore to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

An easier way to manage your Chicago trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Chicago Midway Airport

Chicago O'Hare Intl Airport

Chicago Greater Rockford Airport

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Flights to Washington, D.C.from $37

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Flights to Denverfrom $37

Cheap flights from Baltimore to Chicago from $69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Baltimore to Chicago departing on 10/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Baltimore to Chicago (BWI-CHI)

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Frontier flights from Baltimore to Chicago

Our best Frontier deals on Baltimore to Chicago flight tickets

Spirit Airlines flights from Baltimore to Chicago

Our best Spirit Airlines deals on Baltimore to Chicago flight tickets

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Use the filters below to find and compare flights from Baltimore to Chicago that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Baltimore to Chicago

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

What is the cheapest month to fly to Chicago?

The month of January is, on average, the cheapest month to fly to Chicago from Baltimore, with most prices found around $174. If you’re not able to fly to Chicago in January, then September is your next best option. Flight prices from Baltimore to Chicago during September average around $185.

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

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

Our most recent data shows that the best time of day to fly to Chicago is in the evening. Flights from Baltimore to Chicago during this time can be as low as $333. In contrast, the most expensive time of day to depart to Chicago is in the afternoon when prices are around $439.

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

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

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

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

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

How have Baltimore to Chicago flight prices changed over time?

As of August 2025, prices for Baltimore to Chicago flights are approximately 4% more expensive when compared to flights at the same time last year.

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

Frontier, Spirit Airlines, and Southwest are the most popular carriers operating from Baltimore/Washington to Chicago

What airlines fly to Chicago?

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

As of August 2025, 23 flights take off from Baltimore and land in Chicago each day. The most common flight departure time for this route is 10:00AM, with 47% of daily flights taking off at noon.

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

As of August 2025, there are 163 flights per week flying from Baltimore to Chicago. The most common day of the week flights depart is Mon, with 21% of flights taking off on this day.

When to book flights from Baltimore to Chicago

Cheap Baltimore to Chicago (BWI to CHI) flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Chicago

How far is Baltimore/Washington to Chicago by plane?

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

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

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

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

What is the most popular plane model from Baltimore to Chicago?

What is the most popular airline from Baltimore to Chicago?

Best airlines flying from Baltimore to Chicago

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

Southwest Flights From Baltimore to Chicago

United Airlines Flights From Baltimore to Chicago

Traveling to a place near Chicago?

Why use momondo?

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

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

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

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

An easier way to manage your Chicago trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago