How does KAYAK find such low prices on flights from Illinois to Billings?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Billings.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Billings?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billings from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Billings?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Billings with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Billings?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Billings from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$127 CHEAP FLIGHTS from Illinois to Billings

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Flight Deals

Cheap Flights from Illinois to Billings

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Illinois to Billings

Wed, Dec 2 - Mon, Dec 14

6:21 am - 4:08 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

10h 47m1 stop Las Vegas Harry Reid Intl

5:15 pm - 5:01 amBIL Billings Logan Intl-ORD Chicago O'Hare Intl

10h 46m1 stop Las Vegas Harry Reid Intl

$255Multiple Airlines

Wed, Dec 2 - Mon, Dec 14

8:15 am - 8:57 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

37h 42m2 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl

5:15 pm - 5:01 amBIL Billings Logan Intl-ORD Chicago O'Hare Intl

10h 46m1 stop Las Vegas Harry Reid Intl

$289Multiple Airlines

Tue, Feb 23 - Sat, Feb 27

4:20 pm - 9:19 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

5h 59m1 stop Denver Intl

2:42 pm - 9:29 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

5h 47m1 stop Denver Intl

$316United Airlines

Wed, Nov 25 - Tue, Dec 1

2:30 pm - 9:14 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

7h 44m1 stop Denver Intl

5:50 pm - 11:59 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

5h 09m1 stop Denver Intl

$321United Airlines

Sat, Feb 27 - Wed, Mar 3

3:00 pm - 8:55 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

6h 55m1 stop Dallas/Fort Worth

1:34 pm - 10:05 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

7h 31m1 stop Dallas/Fort Worth

$321American Airlines

Sat, Feb 27 - Wed, Mar 3

1:30 pm - 8:55 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

8h 25m1 stop Dallas/Fort Worth

1:34 pm - 10:05 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

7h 31m1 stop Dallas/Fort Worth

$321American Airlines

Tue, Feb 23 - Sat, Feb 27

1:35 pm - 10:32 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

9h 57m2 stops Detroit Metropolitan Wayne County Salt Lake City

12:58 pm - 9:53 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

7h 55m1 stop Salt Lake City

$326Delta

Sat, Feb 27 - Wed, Mar 3

6:00 am - 12:19 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

7h 19m2 stops Minneapolis St Paul Salt Lake City

12:58 pm - 9:53 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

7h 55m1 stop Salt Lake City

$326Delta

Thu, Nov 26 - Tue, Dec 1

7:00 am - 1:29 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

7h 29m1 stop Denver Intl

5:50 pm - 11:59 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

5h 09m1 stop Denver Intl

$335United Airlines

Thu, Nov 5 - Mon, Nov 9

5:15 pm - 9:14 amORD Chicago O'Hare Intl-BIL Billings Logan Intl

16h 59m1 stop Las Vegas Harry Reid Intl

12:14 pm - 3:31 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

26h 17m2 stops Las Vegas Harry Reid Intl Dallas/Fort Worth

$381Multiple Airlines

Recent last minute flight deals from Illinois to Billings

Tue, Oct 13 - Thu, Nov 12

5:00 am - 9:46 amORD Chicago O'Hare Intl-BIL Billings Logan Intl

5h 46m1 stop Denver Intl

2:42 pm - 10:46 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

7h 04m1 stop Denver Intl

$351United Airlines

Fri, Oct 16 - Mon, Oct 19

12:27 pm - 10:25 pmMDW Chicago Midway-BIL Billings Logan Intl

10h 58m2 stops Minneapolis St Paul Salt Lake City

6:16 am - 11:47 amBIL Billings Logan Intl-MDW Chicago Midway

4h 31m1 stop Minneapolis St Paul

$358Delta

Tue, Oct 13 - Fri, Oct 16

5:00 am - 9:46 amORD Chicago O'Hare Intl-BIL Billings Logan Intl

5h 46m1 stop Denver Intl

2:28 pm - 9:52 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

6h 24m1 stop Denver Intl

$406United Airlines

Fri, Oct 16 - Mon, Oct 19

3:30 pm - 8:15 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

5h 45m1 stop Minneapolis St Paul

5:20 am - 11:55 amBIL Billings Logan Intl-ORD Chicago O'Hare Intl

5h 35m1 stop Salt Lake City

$421Delta

Fri, Oct 16 - Mon, Oct 19

12:30 pm - 10:25 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

10h 55m2 stops Minneapolis St Paul Salt Lake City

5:20 am - 11:55 amBIL Billings Logan Intl-ORD Chicago O'Hare Intl

5h 35m1 stop Salt Lake City

$426Delta

Fri, Oct 16 - Mon, Oct 19

12:27 pm - 10:25 pmMDW Chicago Midway-BIL Billings Logan Intl

10h 58m2 stops Minneapolis St Paul Salt Lake City

6:16 am - 11:47 amBIL Billings Logan Intl-MDW Chicago Midway

4h 31m1 stop Minneapolis St Paul

$426Delta

Fri, Oct 16 - Mon, Oct 19

5:00 am - 9:44 amORD Chicago O'Hare Intl-BIL Billings Logan Intl

5h 44m1 stop Denver Intl

2:28 pm - 9:18 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

5h 50m1 stop Denver Intl

$463United Airlines

Fri, Oct 16 - Mon, Oct 19

5:00 am - 9:44 amORD Chicago O'Hare Intl-BIL Billings Logan Intl

5h 44m1 stop Denver Intl

5:00 am - 11:28 amBIL Billings Logan Intl-ORD Chicago O'Hare Intl

5h 28m1 stop Denver Intl

$463United Airlines

Tue, Oct 13 - Thu, Nov 12

7:20 am - 11:50 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

17h 30m2 stops San Diego Seattle/Tacoma Intl

5:12 pm - 1:17 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

19h 05m2 stops Seattle/Tacoma Intl San Diego

$876Alaska Airlines

Tue, Oct 13 - Fri, Oct 16

7:20 am - 11:50 pmORD Chicago O'Hare Intl-BIL Billings Logan Intl

17h 30m2 stops San Diego Seattle/Tacoma Intl

7:32 pm - 6:53 pmBIL Billings Logan Intl-ORD Chicago O'Hare Intl

22h 21m2 stops Seattle/Tacoma Intl San Diego

$1,176Alaska Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$127

Best time to beat the crowds with an average 16% drop in price.

Most popular time to fly with an average 10% increase in price.

Flight from Chicago O'Hare Airport to Billings

How does KAYAK find such low prices on flights from Illinois to Billings?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Billings.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Billings?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Billings from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Billings?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Billings with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Billings?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Billings from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.