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Cheap flights from Illinois to Billings from $129

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 1/8. 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.
Multiple Airlines Logo
10:00 pm - 9:49 amORD-BIL
12h 49m1 stop
Multiple Airlines Logo
11:20 am - 6:48 pmBIL-ORD
30h 28m1 stop
$214Multiple Airlines
Find Deal
dom., ene. 18 - mié., ene. 21
Multiple Airlines Logo
9:52 pm - 11:30 amORD-BIL
14h 38m1 stop
Multiple Airlines Logo
11:20 am - 6:48 pmBIL-ORD
30h 28m1 stop
$233Multiple Airlines
Find Deal
jue., ene. 15 - mié., ene. 21
Multiple Airlines Logo
9:52 pm - 11:30 amORD-BIL
14h 38m1 stop
Multiple Airlines Logo
11:20 am - 6:46 pmBIL-ORD
30h 26m2 stops
$246Multiple Airlines
Find Deal
jue., ene. 15 - mié., ene. 21
Delta Logo
12:27 pm - 7:26 pmORD-BIL
7h 59m1 stop
Delta Logo
5:15 am - 1:38 pmBIL-ORD
7h 23m1 stop
$291Delta
Find Deal
mar., ene. 20 - mié., ene. 21
Delta Logo
1:49 pm - 7:26 pmMDW-BIL
6h 37m1 stop
Delta Logo
6:10 am - 1:09 pmBIL-MDW
5h 59m1 stop
$291Delta
Find Deal
dom., ene. 18 - jue., ene. 22
United Airlines Logo
10:45 am - 9:21 pmPIA-BIL
11h 36m2 stops
United Airlines Logo
2:40 pm - 8:56 pmBIL-PIA
5h 16m1 stop
$293United Airlines
Find Deal
mié., dic. 3 - mié., dic. 10
Allegiant Air Logo
7:18 pm - 9:34 pmPIA-BIL
27h 16m1 stop
Allegiant Air Logo
6:14 pm - 6:39 pmBIL-PIA
23h 25m1 stop
$306Allegiant Air
Find Deal
mié., dic. 3 - mié., dic. 10
United Airlines Logo
3:59 pm - 9:23 pmORD-BIL
6h 24m1 stop
United Airlines Logo
4:13 pm - 11:59 pmBIL-ORD
6h 46m1 stop
$312United Airlines
Find Deal
sáb., ene. 17 - jue., ene. 22
Alaska Airlines Logo
3:35 pm - 12:08 amORD-BIL
9h 33m1 stop
Alaska Airlines Logo
3:36 pm - 1:09 pmBIL-ORD
20h 33m1 stop
$332Alaska Airlines
Find Deal
sáb., dic. 6 - sáb., dic. 13
Alaska Airlines Logo
6:06 pm - 1:22 pmORD-BIL
20h 16m2 stops
Alaska Airlines Logo
3:35 pm - 5:10 pmBIL-ORD
24h 35m2 stops
$333Alaska Airlines
Find Deal
vie., ene. 30 - lun., feb. 2

Delta flights from Illinois to Billings

Our best Delta deals on Illinois to Billings flight tickets
Delta
Jan 20
ORD12:27 pmChicago O'Hare Intl
7h 59m
1 stop
BIL7:26 pmBillings Logan Intl
Jan 21
BIL5:15 amBillings Logan Intl
7h 23m
1 stop
ORD1:38 pmChicago O'Hare Intl
$291
Find similar
Delta
Jan 19
ORD11:18 amChicago O'Hare Intl
12h 15m
2 stops
BIL10:33 pmBillings Logan Intl
Jan 23
BIL5:15 amBillings Logan Intl
6h 26m
1 stop
ORD12:41 pmChicago O'Hare Intl
$296
Find similar
Delta
Jan 19
ORD11:18 amChicago O'Hare Intl
12h 15m
2 stops
BIL10:33 pmBillings Logan Intl
Jan 21
BIL6:10 pmBillings Logan Intl
13h 32m
2 stops
ORD8:42 amChicago O'Hare Intl
$301
Find similar

United Airlines flights from Illinois to Billings

Our best United Airlines deals on Illinois to Billings flight tickets
United Airlines
Dec 3
PIA10:45 amGreater Peoria
11h 36m
2 stops
BIL9:21 pmBillings Logan Intl
Dec 10
BIL2:40 pmBillings Logan Intl
5h 16m
1 stop
PIA8:56 pmGreater Peoria
$293
Find similar
United Airlines
Jan 17
ORD3:59 pmChicago O'Hare Intl
6h 24m
1 stop
BIL9:23 pmBillings Logan Intl
Jan 22
BIL4:13 pmBillings Logan Intl
6h 46m
1 stop
ORD11:59 pmChicago O'Hare Intl
$312
Find similar
United Airlines
Apr 4
MLI10:46 amMoline Quad-City
11h 08m
2 stops
BIL8:54 pmBillings Logan Intl
Apr 7
BIL2:40 pmBillings Logan Intl
5h 23m
1 stop
MLI9:03 pmMoline Quad-City
$334
Find similar

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 noviembre 10, 2025.
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

dom. 1/18

10:00 pm-9:49 am

1 stop12h 49m

Billings Logan Intl

mié. 1/21

11:20 am-6:48 pm

1 stop30h 28m

$214

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

jue. 1/15

9:52 pm-11:30 am

1 stop14h 38m

Billings Logan Intl

mié. 1/21

11:20 am-6:48 pm

1 stop30h 28m

$233

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

jue. 1/15

9:52 pm-11:30 am

1 stop14h 38m

Billings Logan Intl

mié. 1/21

11:20 am-6:46 pm

2 stops30h 26m

$246

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

mar. 1/20

12:27 pm-7:26 pm

1 stop7h 59m

Billings Logan Intl

mié. 1/21

5:15 am-1:38 pm

1 stop7h 23m

$291

ChicagoBillings

MDW - BIL

MDWBIL

Chicago Midway

dom. 1/18

1:49 pm-7:26 pm

1 stop6h 37m

Billings Logan Intl

jue. 1/22

6:10 am-1:09 pm

1 stop5h 59m

$291

PeoriaBillings

PIA - BIL

PIABIL

Greater Peoria

mié. 12/3

10:45 am-9:21 pm

2 stops11h 36m

Billings Logan Intl

mié. 12/10

2:40 pm-8:56 pm

1 stop5h 16m

$293

PeoriaBillings

PIA - BIL

PIABIL

Greater Peoria

mié. 12/3

7:18 pm-9:34 pm

1 stop27h 16m

Billings Logan Intl

mié. 12/10

6:14 pm-6:39 pm

1 stop23h 25m

$306

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

sáb. 1/17

3:59 pm-9:23 pm

1 stop6h 24m

Billings Logan Intl

jue. 1/22

4:13 pm-11:59 pm

1 stop6h 46m

$312

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

sáb. 12/6

3:35 pm-12:08 am

1 stop9h 33m

Billings Logan Intl

sáb. 12/13

3:36 pm-1:09 pm

1 stop20h 33m

$332

ChicagoBillings

ORD - BIL

ORDBIL

Chicago O'Hare Intl

vie. 1/30

6:06 pm-1:22 pm

2 stops20h 16m

Billings Logan Intl

lun. 2/2

3:35 pm-5:10 pm

2 stops24h 35m

$333

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 October is, on average, the cheapest month to fly to Billings from Illinois, with most prices found around $259. The month of August is another great option to travel to Billings, with average flight prices from Illinois averaging around $290.

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 $497. 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. At noon is when there is more demand to fly to Billings, so prices are often more expensive at around $628 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?

You could potentially save up to 29% on your flight if you consider stops on a Illinois to Billings flight.

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

$259

Direct flights

None
The best flight deal from Illinois to Billings found on momondo in the last 72 hours is $259
There are no direct flights from Illinois to Billings. Popular non-direct route for this connection is Chicago O'Hare Intl Airport - Billings Logan Intl Airport.
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
11,045 reviews
Search American Airlines flights
United AirlinesPriceFrom $269Free CancellationRating
7.4
9,012 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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