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Cheap flights from Illinois to Billings from $111

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 3/31. 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
0 bags

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Find the cheapest flights from Illinois to Billings

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 1:23 pm
ORD
-
BIL
7h 23m
1 stop
United Airlines Logo
2:35 pm - 9:29 pm
BIL
-
ORD
5h 54m
1 stop
$249United Airlines
Sat, Mar 14 - Sat, Mar 21
United Airlines Logo
2:35 pm - 8:57 pm
ORD
-
BIL
7h 22m
1 stop
United Airlines Logo
2:35 pm - 10:54 pm
BIL
-
ORD
7h 19m
1 stop
$270United Airlines
Fri, Apr 10 - Sun, Apr 12
United Airlines Logo
7:52 pm - 10:13 pm
ORD
-
BIL
3h 21mnonstop
United Airlines Logo
5:55 pm - 12:44 am
BIL
-
ORD
5h 49m
1 stop
$294United Airlines
Fri, Jul 10 - Sat, Jul 18
American Airlines Logo
6:10 am - 1:18 pm
ORD
-
BIL
8h 08m
1 stop
American Airlines Logo
1:48 pm - 10:45 pm
BIL
-
ORD
7h 57m
1 stop
$299American Airlines
Tue, Feb 17 - Sat, Feb 21
United Airlines Logo
2:40 pm - 9:22 pm
ORD
-
BIL
7h 42m
1 stop
United Airlines Logo
2:35 pm - 9:29 pm
BIL
-
ORD
5h 54m
1 stop
$304United Airlines
Wed, Mar 4 - Wed, Mar 11
American Airlines Logo
6:10 am - 1:18 pm
PIA
-
BIL
8h 08m
1 stop
American Airlines Logo
1:48 pm - 10:13 pm
BIL
-
PIA
7h 25m
1 stop
$309American Airlines
Tue, Feb 17 - Sat, Feb 21
Delta Logo
3:40 pm - 7:39 pm
STL
-
BIL
4h 59m
1 stop
Delta Logo
5:10 am - 1:32 pm
BIL
-
STL
7h 22m
1 stop
$309Delta
Tue, Feb 17 - Sat, Feb 21
Delta Logo
3:40 pm - 7:39 pm
STL
-
BIL
4h 59m
1 stop
Delta Logo
5:10 am - 2:54 pm
BIL
-
STL
8h 44m
2 stops
$314Delta
Tue, Feb 17 - Sat, Feb 21
Alaska Airlines Logo
3:54 pm - 1:24 pm
ORD
-
BIL
22h 30m
2 stops
Alaska Airlines Logo
3:32 pm - 1:11 pm
BIL
-
ORD
20h 39m
1 stop
$335Alaska Airlines
Thu, Mar 12 - Mon, Mar 16
Alaska Airlines Logo
7:00 am - 11:58 pm
STL
-
BIL
17h 58m
1 stop
Alaska Airlines Logo
2:05 pm - 11:59 pm
BIL
-
STL
8h 54m
1 stop
$337Alaska Airlines
Thu, Mar 26 - Mon, Mar 30

United Airlines flights from Illinois to Billings

Our best United Airlines deals on Illinois to Billings flight tickets
United Airlines
Mar 14
ORD7:00 amChicago O'Hare Intl
7h 23m
1 stop
BIL1:23 pmBillings Logan Intl
Mar 21
BIL2:35 pmBillings Logan Intl
5h 54m
1 stop
ORD9:29 pmChicago O'Hare Intl
$249
United Airlines
Apr 10
ORD2:35 pmChicago O'Hare Intl
7h 22m
1 stop
BIL8:57 pmBillings Logan Intl
Apr 12
BIL2:35 pmBillings Logan Intl
7h 19m
1 stop
ORD10:54 pmChicago O'Hare Intl
$270
United Airlines
Jul 10
ORD7:52 pmChicago O'Hare Intl
3h 21m
BIL10:13 pmBillings Logan Intl
Jul 18
BIL5:55 pmBillings Logan Intl
5h 49m
1 stop
ORD12:44 amChicago O'Hare Intl
$294

Delta flights from Illinois to Billings

Our best Delta deals on Illinois to Billings flight tickets
Delta
Feb 17
STL3:40 pmLambert-St Louis
4h 59m
1 stop
BIL7:39 pmBillings Logan Intl
Feb 21
BIL5:10 amBillings Logan Intl
7h 22m
1 stop
STL1:32 pmLambert-St Louis
$309
Delta
Feb 17
STL3:40 pmLambert-St Louis
4h 59m
1 stop
BIL7:39 pmBillings Logan Intl
Feb 21
BIL5:10 amBillings Logan Intl
8h 44m
2 stops
STL2:54 pmLambert-St Louis
$314
Delta
Mar 30
MDW2:05 pmChicago Midway
7h 14m
1 stop
BIL8:19 pmBillings Logan Intl
Apr 3
BIL6:25 amBillings Logan Intl
6h 00m
1 stop
MDW1:25 pmChicago Midway
$325

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 February 3, 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

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Sat 3/14

7:00 am-1:23 pm

1 stop7h 23m

Billings Logan Intl

Sat 3/21

2:35 pm-9:29 pm

1 stop5h 54m

$249

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Fri 4/10

2:35 pm-8:57 pm

1 stop7h 22m

Billings Logan Intl

Sun 4/12

2:35 pm-10:54 pm

1 stop7h 19m

$270

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Fri 7/10

7:52 pm-10:13 pm

Nonstop3h 21m

Billings Logan Intl

Sat 7/18

5:55 pm-12:44 am

1 stop5h 49m

$294

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Tue 2/17

6:10 am-1:18 pm

1 stop8h 08m

Billings Logan Intl

Sat 2/21

1:48 pm-10:45 pm

1 stop7h 57m

$299

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Wed 3/4

2:40 pm-9:22 pm

1 stop7h 42m

Billings Logan Intl

Wed 3/11

2:35 pm-9:29 pm

1 stop5h 54m

$304

PeoriaBillings

PIA - BIL

PIABIL

Greater Peoria

Tue 2/17

6:10 am-1:18 pm

1 stop8h 08m

Billings Logan Intl

Sat 2/21

1:48 pm-10:13 pm

1 stop7h 25m

$309

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 2/17

3:40 pm-7:39 pm

1 stop4h 59m

Billings Logan Intl

Sat 2/21

5:10 am-1:32 pm

1 stop7h 22m

$309

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 2/17

3:40 pm-7:39 pm

1 stop4h 59m

Billings Logan Intl

Sat 2/21

5:10 am-2:54 pm

2 stops8h 44m

$314

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

Thu 3/12

3:54 pm-1:24 pm

2 stops22h 30m

Billings Logan Intl

Mon 3/16

3:32 pm-1:11 pm

1 stop20h 39m

$335

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 3/26

7:00 am-11:58 pm

1 stop17h 58m

Billings Logan Intl

Mon 3/30

2:05 pm-11:59 pm

1 stop8h 54m

$337

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 August is, on average, the cheapest month to fly to Billings from Illinois, with most prices found around $259. The month of October is another great option to travel to Billings, with average flight prices from Illinois averaging around $259.

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

Our data shows that Monday is the least expensive day to fly to Billings. Tickets to fly out on this day can be as low as $294. Flights from Illinois to Billings on a Sunday will generally be more expensive and average around $511. 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 $304. 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 $412 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 Logan Intl flights?

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

Can stopping save me money on Illinois to Billings flights?

No. A direct flight is the cheapest option for a flight between Illinois to Billings.

Cheap Illinois to Billings flight deals and tips

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

Fastest flight time

3h 21m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Billings

1 airport
The fastest flight from Illinois to Billings takes 3h 21m
Direct flights go from Illinois to Billings on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There is 1 airport in Billings. From Illinois there are direct flights to Billings Logan Intl (BIL).
Search flight deals

  • 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 $225Free CancellationRating
7.2
11,216 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights

Traveling to a place near Billings?

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

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