$40 Cheap Flights from Baltimore (BWI) to Chicago (ORD)

View $40 flight on Sun, Sep 7, 2025Opens in a new window

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

Cheap Flights from Baltimore to Chicago (BWI-ORD)

Prices were available within the past 7 days and start at $40 for one-way flights and $80 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Oct 16 - Sun, Oct 19
BWI
Baltimore
ORD
Chicago
$80 Roundtrip, just found
$80
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Oct 16 from Baltimore to Chicago, returning Sun, Oct 19, priced at $80 just found
Spirit Airlines
Thu, Aug 21 - Sun, Aug 24
BWI
Baltimore
ORD
Chicago
$95 Roundtrip, just found
$95
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Aug 21 from Baltimore to Chicago, returning Sun, Aug 24, priced at $95 just found
Spirit Airlines
Sun, Aug 17 - Tue, Aug 19
BWI
Baltimore
ORD
Chicago
$97 Roundtrip, found 3 hours ago
$97
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Sun, Aug 17 from Baltimore to Chicago, returning Tue, Aug 19, priced at $97 found 3 hours ago
Spirit Airlines
Fri, Sep 19 - Sun, Sep 21
BWI
Baltimore
ORD
Chicago
$106 Roundtrip, just found
$106
Roundtrip
just found
Select Spirit Airlines flight, departing Fri, Sep 19 from Baltimore to Chicago, returning Sun, Sep 21, priced at $106 just found
Spirit Airlines
Tue, Aug 19 - Thu, Aug 28
BWI
Baltimore
ORD
Chicago
$112 Roundtrip, found 4 hours ago
$112
Roundtrip
found 4 hours ago
Select Spirit Airlines flight, departing Tue, Aug 19 from Baltimore to Chicago, returning Thu, Aug 28, priced at $112 found 4 hours ago
Spirit Airlines
Sat, Aug 16 - Tue, Aug 19
BWI
Baltimore
ORD
Chicago
$114 Roundtrip, found 3 hours ago
$114
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Sat, Aug 16 from Baltimore to Chicago, returning Tue, Aug 19, priced at $114 found 3 hours ago
United
Thu, Aug 21 - Sun, Aug 24
BWI
Baltimore
ORD
Chicago
$119 Roundtrip, just found
$119
Roundtrip
just found
Select United flight, departing Thu, Aug 21 from Baltimore to Chicago, returning Sun, Aug 24, priced at $119 just found
Southwest Airlines
Tue, Aug 12 - Thu, Aug 14
BWI
Baltimore
ORD
Chicago
$119 Roundtrip, found 2 hours ago
$119
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Tue, Aug 12 from Baltimore to Chicago, returning Thu, Aug 14, priced at $119 found 2 hours ago
Frontier Airlines
Thu, Aug 21 - Sun, Aug 24
BWI
Baltimore
ORD
Chicago
$124 Roundtrip, just found
$124
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Aug 21 from Baltimore to Chicago, returning Sun, Aug 24, priced at $124 just found
Sun Country Airlines
Thu, Aug 21 - Sun, Aug 31
BWI
Baltimore
ORD
Chicago
$237 Roundtrip, found 2 hours ago
$237
Roundtrip
found 2 hours ago
Select Sun Country Airlines flight, departing Thu, Aug 21 from Baltimore to Chicago, returning Sun, Aug 31, priced at $237 found 2 hours ago

Find the cheapest month to fly from Baltimore (BWI) to Chicago (ORD)

May is typically the cheapest month to fly

From $86 - $309 per traveler.

Graph displaying average flight prices per month

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. Cheapest and Closest option available. Average driving time to city center is 16 minutes. Flights from $207
MDW
Midway Intl.
CheapestClosest
Average driving time to city center16 min
Flights from $207
Flights from Baltimore (BWI) to Chicago (ORD)
Origin airport
Baltimore Washington Intl. Thurgood Marshall
Destination airport
O'Hare Intl.
Airlines serving
American Airlines, Delta, Frontier Airlines, Southwest Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$80
Distance
619 mi
Average flight time
1 hour 16 mins

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 October. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $40 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.

 

Frequently asked questions

How much does a flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD) cost?
Cheap return flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD) start at $90. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Spirit Airlines flight leaving BWI on August 12 2025 and touching down at ORD. The price was last updated on July 17 2025 and has not changed since.
What is the cheapest month to fly from BWI to ORD?
The cheapest flights from BWI to ORD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD)?
Take the express route to O'Hare Intl. Airport (ORD). 3 carriers operate direct flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI), including:

  • American Airlines
  • United Airlines
  • Southwest Airlines

What is the cheapest airline that flies from BWI to ORD?
With fares starting at $45 for a one-way flight from BWI to ORD, Spirit Airlines is currently the cheapest carrier flying this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from BWI on October 5 2025. Prices were last updated on July 17 2025 and have not changed since.
How many flights per day from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD)?
With, on average, 5 nonstop flights that operate from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD) daily, you'll be on your way in no time.
What are the most popular departure times for flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD)?
The 7 AM departures from BWI to ORD are the busiest. Prices can be higher for these popular slots. If you want to save on your trip, pick a less crowded time to fly.
What day of the week has the most flights from BWI to ORD?
If you travel on a Wednesday, you'll get the greatest range of options for flights from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD).
What is the earliest flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD)?
Baltimore Washington Intl. Thurgood Marshall Airport (BWI)'s first flight to O'Hare Intl. Airport (ORD) departs at approximately 7:30AM UTC-5. With a total flight time of 2h 21m, you'll land at around 8:51AM UTC-6.
How long does it take to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD)?
Flights from BWI to ORD have an average travel time of 2 hours and 20 minutes. The total distance between these two airports is 620 mi.
What airline has the least delays from BWI to ORD?
Consider booking with United Airlines if you'd like to fly straight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD) without any delays. This carrier has the strongest track record for punctuality, with an on-time score of 85%. Want to be updated if anything changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD)?
To touch down at O'Hare Intl. Airport (ORD) on schedule, book a flight that leaves Baltimore Washington Intl. Thurgood Marshall Airport (BWI) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Chicago from Baltimore Washington Intl. Thurgood Marshall Airport (BWI)?
Catch a direct flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to Chicago and arrive at O'Hare Intl. Airport (ORD). An alternative gateway to this city is Midway Intl. Airport (MDW).
Is it cheaper to buy a plane ticket from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD) last-minute?
Holding off until just before your departure to book a ticket from BWI to ORD often results in higher prices. While you may find some last-minute discounts, there's no guarantee. Be flexible with your travel plans for a better chance of scoring a bargain.
Is it cheaper to book a BWI to ORD flight and hotel package?
You'll generally save money by securing a BWI to ORD flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your preferred flights and accommodations, consider adding extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to O'Hare Intl. Airport (ORD)?
If you reserved your BWI to ORD flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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