Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Illinois to Billings from $154

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Billings departing on 10/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Billings

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
4:26 pm - 9:00 pm
ORD
-
BIL
5h 34m
1 stop
United Airlines Logo
11:43 am - 3:48 pm
BIL
-
ORD
3h 05mnonstop
$271United Airlines
Wed, Sep 9 - Sat, Sep 12
Delta Logo
3:30 pm - 8:15 pm
ORD
-
BIL
5h 45m
1 stop
Delta Logo
12:58 pm - 10:00 pm
BIL
-
ORD
8h 02m
1 stop
$281Delta
Tue, Oct 27 - Wed, Nov 4
United Airlines Logo
5:00 am - 9:41 am
ORD
-
BIL
5h 41m
1 stop
United Airlines Logo
2:29 pm - 9:29 pm
BIL
-
ORD
6h 00m
1 stop
$281United Airlines
Tue, Sep 15 - Sat, Sep 19
Delta Logo
3:51 pm - 8:12 pm
ORD
-
BIL
5h 21m
1 stop
Delta Logo
5:20 am - 11:59 am
BIL
-
ORD
5h 39m
1 stop
$281Delta
Wed, Sep 2 - Sat, Sep 5
United Airlines Logo
5:48 pm - 10:30 pm
ORD
-
BIL
5h 42m
1 stop
United Airlines Logo
7:00 am - 2:55 pm
BIL
-
ORD
6h 55m
1 stop
$281United Airlines
Tue, Oct 27 - Wed, Nov 4
Delta Logo
6:24 pm - 11:15 pm
ORD
-
BIL
5h 51m
1 stop
Delta Logo
5:20 am - 11:55 am
BIL
-
ORD
5h 35m
1 stop
$281Delta
Wed, Sep 9 - Sat, Sep 12
American Airlines Logo
9:41 am - 11:57 am
ORD
-
BIL
3h 16mnonstop
American Airlines Logo
12:28 pm - 4:30 pm
BIL
-
ORD
3h 02mnonstop
$323American Airlines
Fri, Oct 2 - Sun, Oct 4
American Airlines Logo
5:00 am - 12:43 pm
ORD
-
BIL
8h 43m
1 stop
American Airlines Logo
12:28 pm - 4:30 pm
BIL
-
ORD
3h 02mnonstop
$333American Airlines
Fri, Oct 2 - Sun, Oct 4
Multiple Airlines Logo
10:20 am - 4:21 pm
STL
-
BIL
31h 01m
2 stops
Multiple Airlines Logo
5:22 pm - 11:32 am
BIL
-
STL
17h 10m
1 stop
$376Multiple Airlines
Thu, Sep 17 - Mon, Sep 21
Multiple Airlines Logo
10:20 am - 4:21 pm
STL
-
BIL
31h 01m
2 stops
Multiple Airlines Logo
5:22 pm - 11:32 am
BIL
-
STL
17h 10m
1 stop
$401Multiple Airlines
Thu, Sep 17 - Mon, Sep 21

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Alaska Airlines flights from Illinois to Billings

Our best Alaska Airlines deals on Illinois to Billings flight tickets
Alaska Airlines
Sep 8
STL6:08 pmLambert-St Louis
25h 41m
2 stops
BIL6:49 pmBillings Logan Intl
Sep 15
BIL6:14 amBillings Logan Intl
9h 56m
2 stops
STL5:10 pmLambert-St Louis
$514
Alaska Airlines
Sep 24
STL3:19 pmLambert-St Louis
24h 43m
2 stops
BIL3:02 pmBillings Logan Intl
Sep 27
BIL7:29 pmBillings Logan Intl
17h 52m
1 stop
STL2:21 pmLambert-St Louis
$623
Alaska Airlines
Oct 8
STL7:02 amLambert-St Louis
12h 50m
1 stop
BIL6:52 pmBillings Logan Intl
Oct 12
BIL3:44 pmBillings Logan Intl
23h 00m
2 stops
STL3:44 pmLambert-St Louis
$663

American Airlines flights from Illinois to Billings

Our best American Airlines deals on Illinois to Billings flight tickets
American Airlines
Oct 2
ORD9:41 amChicago O'Hare Intl
3h 16m
BIL11:57 amBillings Logan Intl
Oct 4
BIL12:28 pmBillings Logan Intl
3h 02m
ORD4:30 pmChicago O'Hare Intl
$323
American Airlines
Oct 2
ORD5:00 amChicago O'Hare Intl
8h 43m
1 stop
BIL12:43 pmBillings Logan Intl
Oct 4
BIL12:28 pmBillings Logan Intl
3h 02m
ORD4:30 pmChicago O'Hare Intl
$333
American Airlines
Aug 26
ORD9:40 amChicago O'Hare Intl
3h 10m
BIL11:50 amBillings Logan Intl
Sep 2
BIL12:22 pmBillings Logan Intl
3h 01m
ORD4:23 pmChicago O'Hare Intl
$357

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Billings 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, momondo users made 832,500 searches. Data last updated August 2, 2026.
Use the filters below to find and compare flights from Illinois to Billings that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Wed 9/9

4:26 pm-9:00 pm

1 stop5h 34m

Billings Logan Intl

Sat 9/12

11:43 am-3:48 pm

Nonstop3h 05m

$271

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Tue 10/27

3:30 pm-8:15 pm

1 stop5h 45m

Billings Logan Intl

Wed 11/4

12:58 pm-10:00 pm

1 stop8h 02m

$281

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Tue 9/15

5:00 am-9:41 am

1 stop5h 41m

Billings Logan Intl

Sat 9/19

2:29 pm-9:29 pm

1 stop6h 00m

$281

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Wed 9/2

3:51 pm-8:12 pm

1 stop5h 21m

Billings Logan Intl

Sat 9/5

5:20 am-11:59 am

1 stop5h 39m

$281

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Tue 10/27

5:48 pm-10:30 pm

1 stop5h 42m

Billings Logan Intl

Wed 11/4

7:00 am-2:55 pm

1 stop6h 55m

$281

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Wed 9/9

6:24 pm-11:15 pm

1 stop5h 51m

Billings Logan Intl

Sat 9/12

5:20 am-11:55 am

1 stop5h 35m

$281
Quickest round-trip

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Fri 10/2

9:41 am-11:57 am

Nonstop3h 16m

Billings Logan Intl

Sun 10/4

12:28 pm-4:30 pm

Nonstop3h 02m

$323

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Fri 10/2

5:00 am-12:43 pm

1 stop8h 43m

Billings Logan Intl

Sun 10/4

12:28 pm-4:30 pm

Nonstop3h 02m

$333

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 9/17

10:20 am-4:21 pm

2 stops31h 01m

Billings Logan Intl

Mon 9/21

5:22 pm-11:32 am

1 stop17h 10m

$376

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 9/17

10:20 am-4:21 pm

2 stops31h 01m

Billings Logan Intl

Mon 9/21

5:22 pm-11:32 am

1 stop17h 10m

$401

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Billings from

How to get the cheapest flight ticket from Illinois to Billings

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Billings?

The month of October is, on average, the cheapest month to fly to Billings from Illinois, with most prices found around $259. The month of March is another great option to travel to Billings, with average flight prices from Illinois averaging around $328.

What is the cheapest day to depart on your flight to Billings?

Our data shows that Saturday is the least expensive day to fly to Billings. Tickets to fly out on this day can be as low as $325. Flights from Illinois to Billings on a Monday will generally be more expensive and average around $706. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Billings?

According to our data, the cheapest time of day to fly to Billings is in the evening. momondo users have found flights departing from Illinois to Billings in the evening for as low as $339. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Billings, so prices are often more expensive at around $453 per ticket.

What is the cheapest Illinois to Billings Logan Intl flight route?

Fly from Chicago O'Hare Intl to Billings Logan Intl for the best Illinois - Billings Logan Intl flight prices

What cabin class options are available on Illinois to Billings flights?

There are 3 cabin classes available to choose from on Illinois to Billings flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Illinois to Billings flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Billings

Best Price Found

$284

Fastest flight time

3h 10m

Direct flights

Every day

Airports in Billings

1 airport
The best one-way flight to Billings from Illinois in the past 72 hours is $284. The best round-trip flight deal from Illinois to Billings found on momondo in the last 72 hours is $353.
The fastest flight from Illinois to Billings takes 3h 10m
Direct flights go from Illinois to Billings every day.
There is 1 airport in Billings. From Illinois there are direct flights to Billings Logan Intl (BIL).
Search flight deals

Frequently asked questions about flying from Illinois to Billings

  • When did momondo last update prices for flights from Illinois to Billings Logan Intl Airport?

    Prices for flights from Illinois to Billings Logan Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Illinois to Billings Logan Intl Airport?

  • How old do you have to be to fly from Illinois to Billings Logan Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Billings Logan Intl Airport.

  • What documentation or ID do you need to fly to Billings Logan Intl Airport?

    The travel and health documents you'll need for your trip to Billings Logan Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Billings Logan Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Illinois to Billings?

Best airlines flying from Illinois to Billings

Compare and see reviews for airlines that fly from Illinois to Billings with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $229Free CancellationRating
7.1
11,846 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
10,061 reviews
Search United Airlines flights
DeltaPriceFrom $269Free CancellationRating
7.8
8,493 reviews
Search Delta flights

Traveling to a place near Billings?

Book flights to Billings if you plan to visit one of these locations
Forsyth

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Billings?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Illinois to Billings. momondo saves you time and could save you money on your trip.

Can I find flights from Illinois to Billings with flexible booking policies on momondo?

Yes. All flights to Billings from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Illinois to Billings?

momondo provides multiple filters to help you find the best flight to Billings from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Illinois to Billings right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Billings, momondo offers a useful price alert feature which will track prices for flights to Billings from Illinois and alert you when they change.

An easier way to manage your Billings trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 9/1
Tue 9/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States