$76 Cheap Flights from Baltimore (BWI) to Chicago (ORD)

View $76 flight on Tue, May 26, 2026Opens in a new window

Popular airlines from Baltimore Washington Intl. Airport (BWI) to Chicago O'Hare Intl. Airport (ORD)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Baltimore to Chicago (BWI-ORD)

Prices were available within the past 7 days and start at $76 for one-way flights and $160 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, May 26 - Fri, May 29
BWI
Baltimore
ORD
Chicago
$160 Roundtrip, just found
$160
Roundtrip
just found
Select Frontier Airlines flight, departing Tue, May 26 from Baltimore to Chicago, returning Fri, May 29, priced at $160 just found
Frontier Airlines
Tue, May 26 - Tue, Jun 2
BWI
Baltimore
ORD
Chicago
$164 Roundtrip, found 18 hours ago
$164
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Tue, May 26 from Baltimore to Chicago, returning Tue, Jun 2, priced at $164 found 18 hours ago
Frontier Airlines
Sat, Oct 10 - Sat, Oct 17
BWI
Baltimore
ORD
Chicago
$170 Roundtrip, just found
$170
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 10 from Baltimore to Chicago, returning Sat, Oct 17, priced at $170 just found
Frontier Airlines
Sun, May 24 - Tue, May 26
BWI
Baltimore
ORD
Chicago
$175 Roundtrip, found 1 hour ago
$175
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sun, May 24 from Baltimore to Chicago, returning Tue, May 26, priced at $175 found 1 hour ago
American Airlines
Wed, Jun 24 - Tue, Jun 30
BWI
Baltimore
ORD
Chicago
$177 Roundtrip, just found
$177
Roundtrip
just found
Select American Airlines flight, departing Wed, Jun 24 from Baltimore to Chicago, returning Tue, Jun 30, priced at $177 just found
United
Tue, Jun 2 - Wed, Jun 3
BWI
Baltimore
ORD
Chicago
$177 Roundtrip, found 5 hours ago
$177
Roundtrip
found 5 hours ago
Select United flight, departing Tue, Jun 2 from Baltimore to Chicago, returning Wed, Jun 3, priced at $177 found 5 hours ago
United
Tue, May 26 - Fri, May 29
BWI
Baltimore
ORD
Chicago
$179 Roundtrip, just found
$179
Roundtrip
just found
Select United flight, departing Tue, May 26 from Baltimore to Chicago, returning Fri, May 29, priced at $179 just found
Frontier Airlines
Tue, May 19 - Sat, Aug 22
BWI
Baltimore
ORD
Chicago
$179 Roundtrip, found 6 days ago
$179
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Tue, May 19 from Baltimore to Chicago, returning Sat, Aug 22, priced at $179 found 6 days ago
Delta
Wed, Jun 24 - Tue, Jun 30
BWI
Baltimore
ORD
Chicago
$187 Roundtrip, just found
$187
Roundtrip
just found
Select Delta flight, departing Wed, Jun 24 from Baltimore to Chicago, returning Tue, Jun 30, priced at $187 just found
Southwest Airlines
Tue, May 26 - Wed, May 27
BWI
Baltimore
ORD
Chicago
$197 Roundtrip, found 3 hours ago
$197
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Tue, May 26 from Baltimore to Chicago, returning Wed, May 27, priced at $197 found 3 hours ago

Alternative airports near Chicago

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Midway Intl. MDW. Closest option available. Average driving time to city center is 16 minutes. Flights from $395
MDW
Midway Intl.
Closest
Average driving time to city center16 min
Flights from $395

Frequently asked questions

How much does a flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) cost?
You can find cheap one-way flights and cheap return flights from $160 Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) with Expedia. One-way flights usually range from $110 to $507, and return flights typically cost between $220 and $863. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
September is the cheapest month to fly from Baltimore (BWI) to Chicago (ORD), with average return fares around $220. This price is about 16% lower than the average throughout the year, as September typically has less travel activity after the summer. Other affordable months to consider are February and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
Choose from 4 airlines operating direct flights from BWI to ORD:

  • American Airlines operates around 34 direct flights from BWI to ORD every week
  • United operates around 30 direct flights from BWI to ORD every week
  • Frontier Airlines operates around 9 direct flights from BWI to ORD every week
  • Spirit Airlines operates around 7 direct flights from BWI to ORD every week

What is the cheapest airline that flies from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
Frontier Airlines is one of the cheapest airlines offering nonstop flights from Baltimore Washington Intl. Thurgood Marshall (BWI) to O'Hare Intl. (ORD) with return tickets starting from around $48. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
To find a cheap flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
The best airline to fly with from Baltimore, MD (BWI) to Chicago, IL (ORD) will differ from traveler to traveler. If you like to fly early, American Airlines offers early morning flights. If price is the most important factor, Spirit Airlines typically offers the lowest fares. Delta offers the most daily flights from BWI to ORD, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
The best time to fly from Baltimore, MD (BWI) to Chicago, IL (ORD) is in September or October. You can find return flights for about $220, which is a fantastic deal. These months are ideal as they offer pleasant weather and fewer crowds, allowing you to enjoy your trip to the Windy City.*Prices based on flights available on Expedia in the last year.
How many flights per day from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
On average, there are around 10 nonstop flights per day from Baltimore Washington Intl. Thurgood Marshall (BWI) to O'Hare Intl. (ORD). For more options, look at flights that include layovers.
What is the earliest flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
The earliest flight from Baltimore Washington International Thurgood Marshall Airport (BWI) to O'Hare International Airport (ORD) typically departs at 5:00 AM, operated by American Airlines. This is a seasonal service, so availability may vary. An early departure helps you make the most of your time in Chicago. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
When flying from Baltimore, MD (BWI) to Chicago, IL (ORD), the most popular departure times are in the early morning, from 6am to 9am. About 29% of passengers prefer this time window. Major carriers like Delta Airlines and Southwest Airlines provide flights during this period. Many travelers choose this timing to make the most of their day in Chicago.
How long does it take to fly from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
A nonstop flight from BWI to ORD typically takes around 2 hours 20 minutes, covering approximately 620 miles. Connecting flights on this route usually add 5 hours 10 minutes to your travel time. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
First class is available on flights from BWI to ORD. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • Spirit Airlines
  • United Airlines

How much is a business class flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
A direct, return business class ticket from Baltimore, MD (BWI) to Chicago, IL (ORD) typically costs between $763 - $1,159. A non-stop, one-way business class flight is usually around $373 - $539. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) flight with Expedia?
It's easy to earn miles on a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Chicago from Baltimore Washington Intl. Thurgood Marshall (BWI)?
From Baltimore Washington Intl. Thurgood Marshall (BWI), you can fly into O'Hare Intl. (ORD) and Midway Intl. (MDW) in Chicago. Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), Cincinnati - Northern Kentucky Intl. (CVG), Greenville-Spartanburg Intl. (GSP) before reaching Chicago. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) at the last minute?
Typically, booking a last minute flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) flight and hotel package?
Securing a Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) Chicago Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.)?
If you booked your Baltimore, MD (BWI-Baltimore Washington Intl. Thurgood Marshall) to Chicago, IL (ORD-O'Hare Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
O'Hare Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$160
Distance
619 mi
Average flight time
1 hour 25 mins

Book with confidence

Baltimore to Chicago Flights

The cheapest times to fly from Baltimore to Chicago

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Baltimore to Chicago are during the month of May. You can find some of the cheapest flights from Baltimore to Chicago with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Baltimore to Chicago

Sunday is one of the best days to book for cheap flights from Baltimore to Chicago: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Baltimore to Chicago

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Baltimore to Chicago in 2026. You can also book with separate airlines for your outbound and return journeys, from $76 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Baltimore to Chicago flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Baltimore to Chicago airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Baltimore to Chicago Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia