HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
O'Hare Intl

$136+ Cheap flights from Billings (BIL) 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — ORD
Jun 29 — Jul 61
Mon 6/29
Mon 7/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billings to O'Hare Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Billings to O'Hare Intl

Cheapest flights from Billings to O'Hare Intl
Explore the most affordable flight options available from Billings to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 30, 2026.

This Delta deal was found by Cheapflights users on 5/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:20 am
BIL
-
ORD
1 stop5h 39m
Delta
Tue 7/215:54 pm
ORD
-
BIL
1 stop6h 36m
Delta
Deal found 5/26$271
This Delta deal was found by Cheapflights users on 5/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:24 am
BIL
-
ORD
1 stop7h 41m
Delta
Sat 7/115:00 pm
ORD
-
BIL
1 stop6h 53m
Delta
Deal found 5/27$302
This Delta deal was found by Cheapflights users on 5/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/246:24 am
BIL
-
ORD
1 stop7h 41m
Delta
Wed 7/11:40 pm
ORD
-
BIL
2 stops10h 20m
Delta
Deal found 5/25$307
This American Airlines deal was found by Cheapflights users on 5/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/261:13 pm
BIL
-
ORD
1 stop9h 17m
American Airlines
Wed 9/309:41 am
ORD
-
BIL
Nonstop3h 16m
American Airlines
Deal found 5/29$309
This Delta deal was found by Cheapflights users on 5/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/235:20 am
BIL
-
ORD
1 stop5h 40m
Delta
Sat 7/45:00 pm
ORD
-
BIL
1 stop6h 51m
Delta
Deal found 5/27$319
This United Airlines deal was found by Cheapflights users on 5/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:00 pm
BIL
-
ORD
1 stop5h 44m
United Airlines
Tue 7/145:00 am
ORD
-
BIL
1 stop5h 36m
United Airlines
Deal found 5/28$326
This American Airlines deal was found by Cheapflights users on 5/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1912:28 pm
BIL
-
ORD
Nonstop3h 02m
American Airlines
Mon 9/219:41 am
ORD
-
BIL
Nonstop3h 16m
American Airlines
Deal found 5/29$330
This Delta deal was found by Cheapflights users on 5/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1311:51 am
BIL
-
ORD
1 stop5h 28m
Delta
Sun 8/166:06 pm
ORD
-
BIL
1 stop6h 24m
Delta
Deal found 5/28$333

Find flight deals from Billings to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) 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 May 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$271
(Delta)

One-way from

$136
(United Airlines)

Popular in

March

Cheapest in

February

Average price

$368

Good round-trip deal

$479 or less

Good one-way deal

$317 or less
Provider with most accurate pricing for Billings Logan Intl-Chicago O'Hare Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Billings Logan Intl-Chicago O'Hare Intl flights.
Search Deals
From Billings Logan Intl to Chicago O'Hare Intl
Search Deals
One-way flight from Billings Logan Intl to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Billings Logan Intl to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Billings Logan Intl to Chicago O'Hare Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Billings 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 May 30, 2026.
Use the filters below to find and compare flights from Billings to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Wed 7/8

6:00 pm-12:44 am

1 stop5h 44m

Chicago O'Hare Intl

Tue 7/14

5:00 am-9:36 am

1 stop5h 36m

$326

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Fri 9/18

12:57 pm-9:47 pm

1 stop7h 50m

Chicago O'Hare Intl

Mon 9/21

7:45 am-12:17 pm

1 stop5h 32m

$333

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Tue 6/23

5:20 am-12:00 pm

1 stop5h 40m

Chicago O'Hare Intl

Fri 7/3

5:57 pm-11:35 pm

1 stop6h 38m

$350

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Thu 8/13

6:26 am-6:28 pm

2 stops11h 02m

Chicago O'Hare Intl

Sun 8/16

6:06 pm-11:30 pm

1 stop6h 24m

$399

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Sat 6/13

2:25 pm-9:54 pm

1 stop6h 29m

Chicago O'Hare Intl

Tue 6/16

5:00 am-9:35 am

1 stop5h 35m

$421

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Wed 6/10

6:00 pm-12:44 am

1 stop5h 44m

Chicago O'Hare Intl

Sun 7/5

5:00 am-9:36 am

1 stop5h 36m

$431

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Wed 6/24

6:24 am-3:05 pm

1 stop7h 41m

Chicago O'Hare Intl

Thu 7/2

5:57 pm-11:35 pm

1 stop6h 38m

$453

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Tue 6/23

5:20 am-12:00 pm

1 stop5h 40m

Chicago O'Hare Intl

Tue 6/30

12:27 pm-11:00 pm

1 stop11h 33m

$466

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Wed 7/29

6:00 pm-12:44 am

1 stop5h 44m

Chicago O'Hare Intl

Sun 8/2

5:00 am-9:36 am

1 stop5h 36m

$480
Cheapest one-way
Quickest one-way

BillingsChicago

BIL - ORD

BILORD

Billings Logan Intl

Wed 8/19

11:51 am-6:19 pm

1 stop5h 28m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/26

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Billings to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Billings to O'Hare Intl in May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Billings-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billings-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billings-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Billings-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Billings 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 Billings to Chicago O'Hare Intl Airport

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

Currently, February is the cheapest month in which you can book a flight from Billings to Chicago O'Hare Intl Airport (average of $279). Flying from Billings to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $658). 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 BIL to ORD?

Find hourly flight availability from Billings 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 May 30, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Billings to Chicago O'Hare Intl Airport as you normally would.

How much does it cost to fly round-trip from Billings 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 May 30, 2026.
Read through reviews of airlines operating flights from Billings to Chicago O'Hare Intl Airport, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,417 reviews

Comfort

7.8

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.9
Good
8,417 reviews
Delta
7.9
Good
8,417 reviews

Comfort

7.8

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
United Airlines
7.4
Good
9,766 reviews
Delta
7.9
Good
8,417 reviews

Comfort

7.8

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
American Airlines
7.1
Good
11,640 reviews
Delta
7.9
Good
8,417 reviews

Comfort

7.8

Entertainment

7.8

Overall

7.9

Boarding

8.1

Food

7.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

Related info for your journey

Find useful and relevant information for your journey from Billings 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 Billings to Chicago O'Hare Intl?

    For a flight from Billings to Chicago O'Hare Intl, you will be flying from Billings Logan Intl. Billings Logan Intl (BIL) is just 2.7 mi from the center of the city. Billings Logan Intl is the only Billings airport and it handles 2 outbound flights to Chicago O'Hare Intl per day. 3 airlines have flights to Chicago O'Hare Intl from Billings Logan Intl on a regular basis.

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

    Airlines like United Airlines and Delta fly from Billings to Chicago O'Hare Intl Airport in about 5h 44m. The time it takes to get you to your destination can typically vary by up to 2h 06m. The distance between Billings and Chicago O'Hare Intl Airport is about 1057 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, Delta ($210), American Airlines ($225), and United Airlines ($249) offers the cheapest pricing from Billings to Chicago O'Hare Intl Airport. Users have found that Delta is 47% cheaper than the other options available to this destination.

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

    On average you can expect to pay $491 for a flight from Billings to Chicago O'Hare Intl Airport. The cheapest flight overall is $251 while the most popular route, (Billings Logan Intl - Chicago O'Hare Intl) is currently priced at $326.

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

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

  • How can I find direct flights from Billings 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 Billings to O'Hare Intl.

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

    Yes. Cheapflights offers flight deals from Billings 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 Billings to Chicago O'Hare Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Billings to Chicago O'Hare Intl Airport (average of $279). Flying from Billings to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $658). 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
Rosemont
Schaumburg
Benton Harbor
Naperville
Lake Geneva
Delavan
Oakbrook Terrace
Gurnee
Downers Grove
Des Plaines
Hoffman Estates
Oak Brook
South Holland
Libertyville
Warrenville
Rockford
Great Lakes
Northbrook
Waukegan
Willowbrook

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Billings to O'Hare Intl

Discover the top 3 airlines that operate flights from Billings 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 May 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$210Average$368FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$225Average$394FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$249Average$399FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.