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O'Hare Intl

$69+ Cheap flights from Baltimore (BWI) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — ORD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Baltimore/Washington to Chicago O'Hare Intl are usually found in January or August, booked 77 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Baltimore to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$105
(Frontier)

One-way from

$69
(Kiwi.com)

Popular in

February

Cheapest in

January

Average price

$266
From Baltimore/Washington to Chicago O'Hare Intl
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One-way flight from Baltimore/Washington to Chicago O'Hare Intl
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Highest demand for flights based on searches. 6% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Baltimore to O'Hare Intl

Cheapest flights from Baltimore to O'Hare Intl
Explore the most affordable flight options available from Baltimore to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/299:59 pmBWI - ORD
Nonstop2h 21mFrontier
Tue 9/3011:45 amORD - BWI
1 stop6h 22mFrontier
Deal found 9/15$105
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:44 pmBWI - ORD
Nonstop2h 17mSpirit Airlines
Sun 12/77:56 pmORD - BWI
Nonstop1h 58mSpirit Airlines
Deal found 9/17$106
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:46 pmBWI - ORD
Nonstop2h 29mFrontier
Sun 10/264:50 pmORD - BWI
Nonstop2h 03mFrontier
Deal found 9/15$107
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/59:59 pmBWI - ORD
Nonstop2h 21mFrontier
Mon 10/68:49 pmORD - BWI
1 stop12h 31mFrontier
Deal found 9/15$110
This Priceline deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/29:57 amBWI - ORD
Nonstop2h 13mMultiple Airlines
Mon 10/66:11 pmORD - BWI
Nonstop2h 03mMultiple Airlines
Deal found 9/17$111
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/153:05 pmBWI - ORD
1 stop10h 54mFrontier
Sun 11/1612:11 pmORD - BWI
Nonstop2h 03mFrontier
Deal found 9/16$112
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:46 pmBWI - ORD
Nonstop2h 29mFrontier
Sat 10/118:30 amORD - BWI
1 stop9h 46mFrontier
Deal found 9/15$115
This Cheapflightsfares deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/39:59 pmBWI - ORD
Nonstop2h 21mFrontier
Mon 10/65:50 pmORD - BWI
1 stop6h 03mFrontier
Deal found 9/15$116
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/39:59 pmBWI - ORD
Nonstop2h 21mFrontier
Sun 10/58:05 amORD - BWI
1 stop11h 00mFrontier
Deal found 9/15$118

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore to O'Hare Intl 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, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Baltimore to Chicago O'Hare Intl Airport that are best for you.

Fly from

Baltimore

Fly to

O'Hare Intl

Route

Depart

Return

Price

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 10/22

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

Wed 10/22

1:50 pm-4:50 pm

Nonstop2h 00m

$139

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 10/21

10:51 am-12:05 pm

Nonstop2h 14m

Chicago O'Hare Intl

Wed 10/22

6:15 pm-9:22 pm

Nonstop2h 07m

$139

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 12/4

10:20 am-11:28 am

Nonstop2h 08m

Chicago O'Hare Intl

Sat 12/6

6:20 pm-9:19 pm

Nonstop1h 59m

$158

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 11/5

6:15 am-7:31 am

Nonstop2h 16m

Chicago O'Hare Intl

Sun 11/9

7:05 am-9:59 am

Nonstop1h 54m

$158

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Sat 11/1

6:15 am-7:32 am

Nonstop2h 17m

Chicago O'Hare Intl

Sun 11/2

7:05 am-9:59 am

Nonstop1h 54m

$170

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 10/16

6:29 am-7:44 am

Nonstop2h 15m

Chicago O'Hare Intl

Thu 10/23

7:00 am-9:55 am

Nonstop1h 55m

$177

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Thu 10/16

10:51 am-12:05 pm

Nonstop2h 14m

Chicago O'Hare Intl

Sat 10/18

7:00 am-9:55 am

Nonstop1h 55m

$178

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Wed 10/22

6:29 am-7:44 am

Nonstop2h 15m

Chicago O'Hare Intl

Sun 10/26

7:05 am-9:59 am

Nonstop1h 54m

$178

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 10/21

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

Wed 10/22

6:00 am-1:25 pm

1 stop6h 25m

$184

BaltimoreChicago

BWI - ORD

BWIORD

Baltimore/Washington

Tue 10/7

10:35 am-11:50 am

Nonstop2h 15m

Chicago O'Hare Intl

Wed 10/8

1:50 pm-4:50 pm

Nonstop2h 00m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 21 results
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The best insider tips for Baltimore to Chicago O'Hare Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to Chicago O'Hare Intl Airport trip
Airports
BWI

For a stress-free departure, arrive early during peak hours (6-8 a.m., 3-7 p.m.) to navigate BWI's busy security lines efficiently.

Read more about BWIby Emily Zemler
ORD

Upon arrival at ORD, consider using the 'L' train for a quick and reliable trip to downtown Chicago, avoiding traffic delays.

Read more about ORDby Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Emily Zemler

Emily Zemler

Expert on BWI

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Best time to book a flight from Baltimore to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to Chicago O'Hare Intl Airport

How far ahead should I book a flight from Baltimore to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to O'Hare Intl. Price data was last updated on September 12, 2025.

Booking 77 days in advance of your planned departure date is, on average, the best time to get cheap flights from Baltimore to Chicago O'Hare Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Baltimore to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Baltimore to Chicago O'Hare Intl Airport (average of $245). Flying from Baltimore to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to ORD?

Find hourly flight availability from Baltimore to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

One of the essential ways to save on airfare from Baltimore to Chicago O'Hare Intl Airport is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 75% on airfare.

What is the cheapest day to fly from Baltimore to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to O'Hare Intl. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their Baltimore to Chicago O'Hare Intl Airport flight should consider departing on Friday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Baltimore to Chicago O'Hare Intl Airport?

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated September 17, 2025.
Read through reviews of airlines operating flights from Baltimore to Chicago O'Hare Intl Airport, such as Southwest, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,173 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Overall

8.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Baltimore to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Baltimore to Chicago O'Hare Intl?

    If you book a flight to Chicago O'Hare Intl from Baltimore, you will be flying from Baltimore/Washington, which is the city’s only airport. Baltimore/Washington (BWI) is located 8.5 mi from the center of Baltimore. There are 19 flights from Baltimore/Washington to Chicago O'Hare Intl per day from 6 different airlines.

  • How long is the flight from Baltimore to Chicago O'Hare Intl Airport?

    A quick flight from Baltimore to Chicago O'Hare Intl Airport can take about 2h 14m. Southwest provides one of the quickest options available for as low as $139. The distance from Baltimore to Chicago O'Hare Intl Airport is about 620 mi. All flights are typically nonstop.

  • What are the cheapest airlines flying from Baltimore to Chicago O'Hare Intl Airport round-trip?

    Cheapflights users have booked flights from Baltimore to Chicago O'Hare Intl Airport round-trip from $46. Other airlines that can offer you cheap pricing are Frontier, from $73, and Southwest, from $157. Spirit Airlines is currently priced 83% below the average price you’ll pay for this route.

  • What are the most reliable airlines from Baltimore to Chicago O'Hare Intl Airport?

    The top 3 most reliable airlines when flying from Baltimore to Chicago O'Hare Intl Airport are ANA (92%), Japan Airlines (89%) and Royal Jordanian (88%).

  • What are the cheapest flights from Baltimore to Chicago O'Hare Intl Airport?

    Looking for the cheapest flight from Baltimore to Chicago O'Hare Intl Airport? While on average our users pay $655, our data indicates the cheapest price to be $69. The most popular route (Baltimore/Washington - Chicago O'Hare Intl), is priced around $92.

  • Can I find deals for flights from Baltimore to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Baltimore to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to O'Hare Intl.

  • Can I find deals for business class flights from Baltimore to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Baltimore to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Baltimore to Chicago O'Hare Intl Airport (average of $245). Flying from Baltimore to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Orland Park
Beloit
Racine
Rockford
Oak Brook
Elk Grove Village
Downers Grove
Naperville
Evanston
Merrillville
Bridgeview
Warrenville

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Baltimore to O'Hare Intl

Discover the top 6 airlines that operate flights from Baltimore to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$46Average$123FlexibilityNo cancel feeOn-time65%
FrontierCheapest$73Average$171FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$157Average$287FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$158Average$305FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$158Average$305FlexibilityNo cancel feeOn-time71%
DeltaCheapest$212Average$296FlexibilityNo cancel feeOn-timeN/A

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