Cheap Flights from Billings to Chicago O'Hare International

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Compare Billings to Chicago O'Hare International flight deals

Find the cheapest month or even day of the year to fly to Chicago O'Hare International

Book the best Chicago O'Hare International fare with no extra fees

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Flight deals from Billings to Chicago O'Hare International

Looking for a cheap last-minute deal or the best return flight from Billings Airport to Chicago O'Hare International Airport? If you want to travel next month, return fares start from $516. Find the lowest prices on one-way and return tickets right here.

Chicago.$516 per passenger.Departing Sat, 17 Oct, returning Wed, 21 Oct.Return flight with United.Outbound indirect flight with United, departs from Billings on Sat, 17 Oct, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Wed, 21 Oct, arriving in Billings.Price includes taxes and charges.From $516, select.

Chicago.$545 per passenger.Departing Tue, 26 Jan, returning Tue, 9 Feb.Return flight with United.Outbound indirect flight with United, departs from Billings on Tue, 26 Jan, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Tue, 9 Feb, arriving in Billings.Price includes taxes and charges.From $545, select.

Chicago.$545 per passenger.Departing Sat, 21 Nov, returning Sat, 5 Dec.Return flight with United.Outbound indirect flight with United, departs from Billings on Sat, 21 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Sat, 5 Dec, arriving in Billings.Price includes taxes and charges.From $545, select.

Chicago.$545 per passenger.Departing Tue, 12 Jan, returning Tue, 26 Jan.Return flight with United.Outbound indirect flight with United, departs from Billings on Tue, 12 Jan, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Tue, 26 Jan, arriving in Billings.Price includes taxes and charges.From $545, select.

Chicago.$552 per passenger.Departing Tue, 2 Feb, returning Tue, 16 Feb.Return flight with United.Outbound indirect flight with United, departs from Billings on Tue, 2 Feb, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Tue, 16 Feb, arriving in Billings.Price includes taxes and charges.From $552, select.

Chicago.$571 per passenger.Departing Sun, 20 Dec, returning Sat, 9 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Billings on Sun, 20 Dec, arriving in Chicago O'Hare International.Inbound indirect flight with Delta, departs from Chicago O'Hare International on Sat, 9 Jan, arriving in Billings.Price includes taxes and charges.From $571, select.

Chicago.$571 per passenger.Departing Tue, 15 Sep, returning Wed, 23 Sep.Return flight with United.Outbound indirect flight with United, departs from Billings on Tue, 15 Sep, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Wed, 23 Sep, arriving in Billings.Price includes taxes and charges.From $571, select.

Chicago.$571 per passenger.Departing Wed, 30 Sep, returning Sat, 3 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Billings on Wed, 30 Sep, arriving in Chicago O'Hare International.Inbound indirect flight with Delta, departs from Chicago O'Hare International on Sat, 3 Oct, arriving in Billings.Price includes taxes and charges.From $571, select.

Chicago.$601 per passenger.Departing Wed, 2 Dec, returning Wed, 16 Dec.Return flight with United.Outbound indirect flight with United, departs from Billings on Wed, 2 Dec, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Wed, 16 Dec, arriving in Billings.Price includes taxes and charges.From $601, select.

Chicago.$641 per passenger.Departing Sat, 13 Mar, returning Sat, 27 Mar.Return flight with United.Outbound indirect flight with United, departs from Billings on Sat, 13 Mar, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Sat, 27 Mar, arriving in Billings.Price includes taxes and charges.From $641, select.

Chicago.$645 per passenger.Departing Tue, 16 Feb, returning Tue, 2 Mar.Return flight with United.Outbound indirect flight with United, departs from Billings on Tue, 16 Feb, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Tue, 2 Mar, arriving in Billings.Price includes taxes and charges.From $645, select.

Chicago.$667 per passenger.Departing Sun, 8 Nov, returning Sun, 22 Nov.Return flight with United.Outbound indirect flight with United, departs from Billings on Sun, 8 Nov, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Sun, 22 Nov, arriving in Billings.Price includes taxes and charges.From $667, select.

Chicago.$1,123 per passenger.Departing Tue, 4 May, returning Tue, 18 May.Return flight with United.Outbound indirect flight with United, departs from Billings on Tue, 4 May, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Tue, 18 May, arriving in Billings.Price includes taxes and charges.From $1,123, select.

Chicago.$1,321 per passenger.Departing Sun, 18 Oct, returning Sun, 1 Nov.Return flight with United.Outbound indirect flight with United, departs from Billings on Sun, 18 Oct, arriving in Chicago O'Hare International.Inbound indirect flight with United, departs from Chicago O'Hare International on Sun, 1 Nov, arriving in Billings.Price includes taxes and charges.From $1,321, select.

Find the cheapest month to fly from Billings to Chicago O'Hare International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Billings to Chicago O'Hare International flights are currently cheapest in October.

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Direct flights from Billings to Chicago O'Hare International

Billings to Chicago O'Hare International: Alternative routes

Compare routes from Billings to Chicago below. You may find an airport to fly into that's cheaper, faster, or easier than Chicago O'Hare International.

Billings to Chicago: Flight information

The things to know before you go.

Cheapest flight found	$516
Cheapest month to fly	October
Average flight time	3 hrs, 2 mins
Most popular airline	Qatar Airways
Average flights per week	14

Finding cheap flights from Billings to Chicago O'Hare International: Frequently asked questions

How much are return flights from Billings to Chicago O'Hare International?

The best price we found for a return flight from Billings to Chicago O'Hare International is $516. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Billings to Chicago O'Hare International?

3 hours and 2 minutes is the average flight time from Billings to Chicago O'Hare International.

Which airlines fly direct from Billings to Chicago O'Hare International?

Qatar Airways, Envoy Air and American Airlines fly direct from Billings to Chicago O'Hare International.

How many flights are there a week from Billings to Chicago O'Hare International?

As of September 2026, there are 14 flights per week flying from Billings to Chicago O'Hare International.

When is the cheapest time to fly from Billings to Chicago O'Hare International?

The cheapest month to fly from Billings to Chicago O'Hare International is usually October.

Which upcoming date is cheapest to fly from Billings Airport to Chicago O'Hare International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Billings Airport to Chicago O'Hare International Airport on Saturday, 17 October 2026.

Can I get a direct flight from Billings Airport to Chicago O'Hare International Airport?

Yes – the average flight time is 3 hours and 2 minutes.

How can I find the best flight deal to Chicago O'Hare International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Chicago O'Hare International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Chicago?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Chicago is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from Billings Airport to Chicago O'Hare International with?

Currently, United offers the cheapest flight tickets to Chicago O'Hare International.

Travelling from Billings Airport (BIL) to Chicago O'Hare International Airport (ORD): what you need to know

Hop on a direct flight from Billings Airport to Chicago O'Hare International Airport and you'll be in the air for an average of 3 hours.
The timezone in Chicago is UTC-6, which is one hour ahead of Billings.
You can choose from ten weekly Billings Airport to Chicago O'Hare International Airport flights. The 06:00 departure with American Airlines is the earliest available. United Airlines operates the latest service of the day at 13:00.
Give yourself plenty of time to catch your BIL to ORD flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.
Be prepared for bigger queues during popular months like September. Arriving up to four hours in advance for international flights and two hours for domestic departures is a smart move.
Travelling to Chicago (and then seeing more of the United States!) is easy with United. This popular carrier offers direct flights from Billings Airport to Chicago O'Hare International Airport.
United is the top choice for travellers on this route.
With a dependable 90.0% of services arriving on schedule, United is the most punctual carrier for BIL to ORD flights.
We make it easy to book a flight with a stopover. To see your options for tickets from Billings Airport to Chicago O'Hare International Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to tour the city of your choice. Stopovers between BIL and ORD include:
- Denver International Airport
- Minneapolis St Paul Airport
- Salt Lake City Airport

How to find the cheapest flights from Billings Airport (BIL) to Chicago O'Hare International Airport (ORD)

Currently, $286 is the lowest price we've seen for a one-way Billings Airport to Chicago O'Hare International Airport flight. The best price for a return plane ticket is $516. Keep in mind that fares can change due to availability when booking.
Get cheap tickets from BIL to ORD by booking at least three months ahead. According to our research, that's the sweet spot for landing a bargain.
The cheapest month for flights from Billings Airport to Chicago O'Hare International Airport is August. Use the 'Whole month' tool to find the lowest airfares if you have flexible travel dates.
Finding cheap flights from BIL to ORD is a cinch with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when there's a better deal.
Choose your ideal arrival and departure times, number of stops and airlines with the filters. Or sort your results by 'Cheapest' to see the best deals on flights from Billings Airport to Chicago O'Hare International Airport.

Handy information about Billings Airport (BIL)

The address for BIL is 1901 Terminal Circle, Room 216.
84% of flights leaving Billings Airport land at their destination as planned. With its strong on-time performance, you're unlikely to experience delays when flying out of BIL.
Billings Airport is around 10 kilometres from central Billings. If you're driving, ride-sharing or catching a taxi from the centre, it'll take you 15 minutes or so to arrive, depending on the traffic.
Planning to catch public transport? Expect a journey time of around 30 minutes.
Need a handy hotel close to BIL? If you're catching an early flight from Billings Airport to Chicago O'Hare International Airport, these stays will have you moments from your check-in counter:

Arriving at Chicago O'Hare International Airport (ORD)

The last thing you need is a long journey to your hotel if you're getting in late on a Billings Airport to Chicago O'Hare International Airport flight. Check in to one of these accommodation options near ORD instead:
Get on the fast track to adventure by picking up a Chicago O'Hare International Airport rental car. Grab a set of wheels from Routes Car Rentals, Dollar or Budget and experience the lesser-explored corners of Chicago and beyond.
Reserving your vehicle from Chicago O'Hare International Airport about four weeks in advance can help you get the lowest rate.

Getting from Chicago O'Hare International Airport (ORD) to central Chicago

The street address for ORD is 10000 West O'Hare.
Chicago O'Hare International Airport to central Chicago has a drive time of around 30 minutes. It's approximately 27 kilometres away.
It typically takes 45 minutes when travelling by public transport.

When to fly to Chicago O'Hare International Airport (ORD)

July is the most popular month for flights from Billings Airport to Chicago O'Hare International Airport. For smaller crowds, visit Chicago in March.
When booking your flight from Billings Airport to Chicago O'Hare International Airport, think about the type of weather you like. July is the warmest month in Chicago, with temperatures ranging from 16ºC to 28ºC.
For cooler conditions, search for a cheap ticket from BIL to ORD in January. Temperatures average between -12ºC and 3ºC then.

Explore more of the United States

Columbus is just one of the many cities in the United States waiting to be explored once you've taken in the sights of Chicago. Around 451 kilometres away to the south-east, check out popular attractions including Franklin Park Conservatory and Botanical Gardens, Whetstone Park / Park of Roses and Ohio Theatre.
If there's time to check out another side of the United States, head for Indianapolis, about 257 kilometres south-east of Chicago. Lucas Oil Stadium, Eiteljorg Museum and The Children's Museum of Indianapolis are highlights.