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Cheap flights from Baltimore to Chicago from $66

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 3/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:42 pm - 5:05 pm
BWI
-
ORD
2h 23mnonstop
Frontier Logo
1:19 pm - 4:24 pm
ORD
-
BWI
2h 05mnonstop
$118Frontier
Fri, Apr 3 - Thu, Apr 9
Frontier Logo
5:09 pm - 6:35 pm
BWI
-
ORD
2h 26mnonstop
Frontier Logo
3:00 pm - 10:36 am
ORD
-
BWI
18h 36m
1 stop
$119Frontier
Thu, Apr 9 - Sat, Apr 11
Multiple Airlines Logo
5:09 pm - 6:35 pm
BWI
-
ORD
2h 26mnonstop
Multiple Airlines Logo
5:30 pm - 11:59 pm
ORD
-
BWI
29h 29m
2 stops
$120Multiple Airlines
Thu, Apr 9 - Mon, Apr 13
Frontier Logo
4:32 pm - 5:59 pm
BWI
-
ORD
2h 27mnonstop
Frontier Logo
1:19 pm - 4:24 pm
ORD
-
BWI
2h 05mnonstop
$121Frontier
Mon, Mar 23 - Thu, Apr 2
Multiple Airlines Logo
4:42 pm - 6:08 pm
BWI
-
ORD
2h 26mnonstop
Multiple Airlines Logo
1:40 pm - 8:02 am
ORD
-
BWI
17h 22m
1 stop
$122Multiple Airlines
Fri, Apr 17 - Sun, Apr 19
Frontier Logo
6:05 am - 11:32 am
BWI
-
ORD
6h 27m
1 stop
Frontier Logo
10:45 am - 12:44 am
ORD
-
BWI
12h 59m
1 stop
$123Frontier
Thu, Apr 16 - Tue, Apr 21
Frontier Logo
4:25 pm - 5:51 pm
BWI
-
ORD
2h 26mnonstop
Frontier Logo
5:01 am - 4:59 pm
ORD
-
BWI
10h 58m
1 stop
$124Frontier
Thu, May 14 - Sat, May 16
Frontier Logo
4:55 pm - 6:18 pm
BWI
-
ORD
2h 23mnonstop
Frontier Logo
8:00 am - 11:06 am
ORD
-
BWI
2h 06mnonstop
$125Frontier
Wed, Apr 1 - Wed, Apr 8
Frontier Logo
4:25 pm - 5:51 pm
BWI
-
ORD
2h 26mnonstop
Frontier Logo
12:25 pm - 3:30 pm
ORD
-
BWI
2h 05mnonstop
$126Frontier
Thu, May 7 - Fri, May 8
Frontier Logo
5:09 pm - 6:35 pm
BWI
-
ORD
2h 26mnonstop
Frontier Logo
4:28 pm - 12:44 am
ORD
-
BWI
7h 16m
1 stop
$127Frontier
Thu, Apr 9 - Thu, Apr 16

Frontier flights from Baltimore to Chicago O'Hare Intl Airport

Our best Frontier deals on Baltimore to Chicago O'Hare Intl Airport flight tickets
Frontier
Apr 3
BWI3:42 pmBaltimore/Washington
2h 23m
ORD5:05 pmChicago O'Hare Intl
Apr 9
ORD1:19 pmChicago O'Hare Intl
2h 05m
BWI4:24 pmBaltimore/Washington
$118
Frontier
Apr 9
BWI5:09 pmBaltimore/Washington
2h 26m
ORD6:35 pmChicago O'Hare Intl
Apr 11
ORD3:00 pmChicago O'Hare Intl
18h 36m
1 stop
BWI10:36 amBaltimore/Washington
$119
Frontier
Mar 23
BWI4:32 pmBaltimore/Washington
2h 27m
ORD5:59 pmChicago O'Hare Intl
Apr 2
ORD1:19 pmChicago O'Hare Intl
2h 05m
BWI4:24 pmBaltimore/Washington
$121

Spirit Airlines flights from Baltimore to Chicago O'Hare Intl Airport

Our best Spirit Airlines deals on Baltimore to Chicago O'Hare Intl Airport flight tickets
Spirit Airlines
Mar 9
BWI10:06 amBaltimore/Washington
10h 05m
1 stop
ORD7:11 pmChicago O'Hare Intl
Mar 10
ORD5:15 amChicago O'Hare Intl
11h 31m
1 stop
BWI5:46 pmBaltimore/Washington
$162
Spirit Airlines
Mar 10
BWI10:06 amBaltimore/Washington
10h 05m
1 stop
ORD7:11 pmChicago O'Hare Intl
Mar 11
ORD10:44 amChicago O'Hare Intl
11h 09m
1 stop
BWI10:53 pmBaltimore/Washington
$163
Spirit Airlines
Mar 5
BWI11:30 amBaltimore/Washington
7h 16m
1 stop
ORD5:46 pmChicago O'Hare Intl
Mar 9
ORD8:16 pmChicago O'Hare Intl
11h 50m
1 stop
BWI9:06 amBaltimore/Washington
$169

momondo Fare Finder

 
Customize your flight search to find flights from Baltimore to Chicago O'Hare Intl Airport 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, momondo users made 832,500 searches. Data last updated February 28, 2026.
Use the filters below to find and compare flights from Baltimore to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Fri 4/3

3:42 pm-5:05 pm

Nonstop2h 23m

Chicago O'Hare Intl

Thu 4/9

1:19 pm-4:24 pm

Nonstop2h 05m

$118

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 4/9

5:09 pm-6:35 pm

Nonstop2h 26m

Chicago O'Hare Intl

Sat 4/11

3:00 pm-10:36 am

1 stop18h 36m

$119

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 4/9

5:09 pm-6:35 pm

Nonstop2h 26m

Chicago O'Hare Intl

Mon 4/13

5:30 pm-11:59 pm

2 stops29h 29m

$120

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Mon 3/23

4:32 pm-5:59 pm

Nonstop2h 27m

Chicago O'Hare Intl

Thu 4/2

1:19 pm-4:24 pm

Nonstop2h 05m

$121

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Fri 4/17

4:42 pm-6:08 pm

Nonstop2h 26m

Chicago O'Hare Intl

Sun 4/19

1:40 pm-8:02 am

1 stop17h 22m

$122

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 4/16

6:05 am-11:32 am

1 stop6h 27m

Chicago O'Hare Intl

Tue 4/21

10:45 am-12:44 am

1 stop12h 59m

$123

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 5/14

4:25 pm-5:51 pm

Nonstop2h 26m

Chicago O'Hare Intl

Sat 5/16

5:01 am-4:59 pm

1 stop10h 58m

$124

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 4/1

4:55 pm-6:18 pm

Nonstop2h 23m

Chicago O'Hare Intl

Wed 4/8

8:00 am-11:06 am

Nonstop2h 06m

$125

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 5/7

4:25 pm-5:51 pm

Nonstop2h 26m

Chicago O'Hare Intl

Fri 5/8

12:25 pm-3:30 pm

Nonstop2h 05m

$126

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 4/9

5:09 pm-6:35 pm

Nonstop2h 26m

Chicago O'Hare Intl

Thu 4/16

4:28 pm-12:44 am

1 stop7h 16m

$127

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

How to get the cheapest flight ticket from Baltimore to Chicago O'Hare Intl Airport

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 O'Hare Intl Airport?

The month of August is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Baltimore averaging around $234.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Friday when prices can be found for as low as $389. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Baltimore because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $531.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Baltimore in the evening is the least expensive time of day to depart. momondo users have found prices as low as $376 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $437. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Baltimore/Washington to Chicago O'Hare Intl flight route?

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Baltimore when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $275 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Baltimore for as low as $184 on momondo.

What cabin class options are available on Baltimore/Washington to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on Baltimore/Washington to Chicago O'Hare Intl 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 O'Hare Intl Airport flight prices changed over time?

As of February 2026, prices for Baltimore to Chicago O'Hare Intl Airport flights are approximately 72% cheaper when compared to flights at the same time last year.

When to book flights from Baltimore to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Baltimore to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Baltimore to Chicago O'Hare Intl Airport (BWI to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Baltimore to Chicago O'Hare Intl Airport

Best Price Found

$142

Fastest flight time

2h 10m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Baltimore in the past 72 hours is $142. The best round-trip flight deal from Baltimore to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $247.
The fastest flight from Baltimore to Chicago O'Hare Intl Airport takes 2h 10m
Direct flights go from Baltimore to Chicago O'Hare Intl Airport every day.
Search flight deals

  • How far is Baltimore/Washington to Chicago O'Hare Intl by plane?

    The straight-line distance from Baltimore/Washington to Chicago O'Hare Intl is 619.6 mi. By plane, this route typically takes 2h 10m.

  • When did momondo last update prices for flights from Baltimore/Washington Airport to Chicago O'Hare Intl Airport?

    Prices for flights from Baltimore/Washington Airport to Chicago O'Hare Intl Airport refresh daily.

  • How many operators does momondo search for flights from Baltimore/Washington Airport to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from Baltimore/Washington Airport to Chicago O'Hare Intl Airport?

    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 O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The required travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Baltimore to Chicago O'Hare Intl Airport?

  • What is the most popular airline from Baltimore to Chicago O'Hare Intl Airport?

Best airlines flying from Baltimore to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Baltimore to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $41Free CancellationRating
6.3
8,492 reviews
Search Spirit Airlines flights
FrontierPriceFrom $57Free CancellationRating
5.7
3,041 reviews
Search Frontier flights
SouthwestPriceFrom $148Free CancellationRating
8.0
4,303 reviews
Search Southwest flights
United AirlinesPriceFrom $152Free CancellationRating
7.4
9,362 reviews
Search United Airlines flights
American AirlinesPriceFrom $159Free CancellationRating
7.1
11,367 reviews
Search American Airlines flights

  • United Airlines Flights From Baltimore to Chicago O'Hare Intl Airport

    United Airlines is one of the most popular airlines flying from Baltimore to Chicago O'Hare Intl Airport, operating 11 flights/week on average for this route. A good United Airlines flight deal for Baltimore to Chicago O'Hare Intl Airport starts from $152 round-trip, up to an average price of $299. Our users have rated United Airlines at 7.4/10.

  • American Airlines Flights From Baltimore to Chicago O'Hare Intl Airport

    American Airlines (7.1/10 from 11,367 reviews) operates around 23 flights from Baltimore to Chicago O'Hare Intl Airport in any given week. The average American Airlines airfare for this route is around $310, with deals from around $159 rare but found on momondo. Referenced prices are for round-trip Baltimore to Chicago O'Hare Intl Airport flight searches in the last 72 hours.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Rosemont
Naperville
New Buffalo
Kenosha
Orland Park
Oak Brook
Joliet
Racine
Janesville
Hammond
Aurora
Tinley Park
Elgin
South Holland

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Baltimore to Chicago. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to Chicago from Baltimore with this policy.

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?

Yes momondo offers price alerts on flights to Chicago from Baltimore. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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