How long does it take to fly to Helena?

On average, it takes 3h 14m to fly from Illinois to Helena if you fly out of Chicago (the most popular airport in Illinois) and into Bozeman (the most popular airport in Helena). If you’re flying out of Moline and into Bozeman, then the flight time is around 5h 26m.

When did momondo last update prices for flights from Illinois to Helena Airport?

Prices for flights from Illinois to Helena Airport were last updated today.

How old do you have to be to fly from Illinois to Helena Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Helena Airport.

What documentation or ID do you need to fly to Helena Airport?

The travel and health documents required for your trip to Helena Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Helena Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$330 Cheap Flights from Illinois to Helena in 2026

Find the cheapest flights from Illinois to Helena

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:35 am - 12:28 pmORD Chicago O'Hare Intl-HLN Helena

5h 53m1 stop Salt Lake City

1:08 pm - 10:05 pmHLN Helena-ORD Chicago O'Hare Intl

7h 57m1 stop Salt Lake City

$339Delta

Sat, Oct 10 - Sat, Oct 17

8:00 am - 4:23 pmORD Chicago O'Hare Intl-HLN Helena

9h 23m1 stop Seattle/Tacoma Intl

5:00 pm - 2:21 pmHLN Helena-ORD Chicago O'Hare Intl

20h 21m1 stop Seattle/Tacoma Intl

$393Alaska Airlines

Sat, Jan 30 - Tue, Feb 2

9:13 am - 1:27 pmSTL Lambert-St Louis-HLN Helena

5h 14m1 stop Denver Intl

2:30 pm - 8:59 pmHLN Helena-STL Lambert-St Louis

5h 29m1 stop Denver Intl

$429United Airlines

Sat, Feb 6 - Tue, Feb 9

2:37 pm - 8:59 pmORD Chicago O'Hare Intl-HLN Helena

7h 22m1 stop Denver Intl

2:30 pm - 9:31 pmHLN Helena-ORD Chicago O'Hare Intl

6h 01m1 stop Denver Intl

$429United Airlines

Sat, Jan 30 - Tue, Feb 2

9:13 am - 1:27 pmSTL Lambert-St Louis-HLN Helena

5h 14m1 stop Denver Intl

7:00 am - 4:53 pmHLN Helena-STL Lambert-St Louis

8h 53m2 stops Denver Intl Chicago O'Hare Intl

$434United Airlines

Sat, Feb 6 - Tue, Feb 9

10:40 am - 10:29 pmSTL Lambert-St Louis-HLN Helena

12h 49m2 stops Atlanta Hartsfield-Jackson Salt Lake City

12:57 pm - 11:16 pmHLN Helena-STL Lambert-St Louis

9h 19m2 stops Salt Lake City Minneapolis St Paul

$439Delta

Sat, Sep 26 - Wed, Sep 30

3:00 pm - 8:59 pmSTL Lambert-St Louis-HLN Helena

6h 59m1 stop Denver Intl

7:00 am - 12:43 pmHLN Helena-STL Lambert-St Louis

4h 43m1 stop Denver Intl

$449United Airlines

Sat, Feb 6 - Tue, Feb 9

10:40 am - 8:59 pmPIA Greater Peoria-HLN Helena

11h 19m2 stops Chicago O'Hare Intl Denver Intl

2:30 pm - 8:47 pmHLN Helena-PIA Greater Peoria

5h 17m1 stop Denver Intl

$449United Airlines

Sat, Jan 30 - Wed, Feb 3

1:30 pm - 9:08 pmORD Chicago O'Hare Intl-HLN Helena

8h 38m1 stop Denver Intl

2:23 pm - 9:30 pmHLN Helena-ORD Chicago O'Hare Intl

6h 07m1 stop Denver Intl

$449United Airlines

Sat, Oct 24 - Mon, Oct 26

1:09 pm - 8:59 pmSTL Lambert-St Louis-HLN Helena

8h 50m2 stops Chicago O'Hare Intl Denver Intl

2:30 pm - 8:59 pmHLN Helena-STL Lambert-St Louis

5h 29m1 stop Denver Intl

$454United Airlines

Sat, Feb 6 - Tue, Feb 9

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Alaska Airlines flights from Illinois to Helena

Our best Alaska Airlines deals on Illinois to Helena flight tickets

Alaska Airlines

Jan 30

ORD8:00 amChicago O'Hare Intl

9h 23m

1 stop

HLN4:23 pmHelena

Feb 2

HLN5:00 pmHelena

20h 21m

1 stop

ORD2:21 pmChicago O'Hare Intl

$393

Alaska Airlines

Oct 9

ORD5:46 pmChicago O'Hare Intl

24h 03m

1 stop

HLN4:49 pmHelena

Oct 17

HLN5:26 pmHelena

11h 14m

1 stop

ORD5:40 amChicago O'Hare Intl

$534

Alaska Airlines

Oct 9

ORD2:21 pmChicago O'Hare Intl

27h 28m

2 stops

HLN4:49 pmHelena

Oct 17

HLN5:26 pmHelena

11h 14m

1 stop

ORD5:40 amChicago O'Hare Intl

$611

United Airlines flights from Illinois to Helena

Our best United Airlines deals on Illinois to Helena flight tickets

United Airlines

Feb 6

STL9:13 amLambert-St Louis

5h 14m

1 stop

HLN1:27 pmHelena

Feb 9

HLN2:30 pmHelena

5h 29m

1 stop

STL8:59 pmLambert-St Louis

$429

United Airlines

Feb 6

STL9:13 amLambert-St Louis

5h 14m

1 stop

HLN1:27 pmHelena

Feb 9

HLN7:00 amHelena

8h 53m

2 stops

STL4:53 pmLambert-St Louis

$434

United Airlines

Feb 6

STL3:00 pmLambert-St Louis

6h 59m

1 stop

HLN8:59 pmHelena

Feb 9

HLN7:00 amHelena

4h 43m

1 stop

STL12:43 pmLambert-St Louis

$449

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoHelena

ORD Chicago O'Hare Intl - HLN Helena

ORDHLN

Chicago O'Hare Intl

Sat 10/10

7:35 am-12:28 pm

1 stop5h 53m

Helena

Sat 10/17

1:08 pm-10:05 pm

1 stop7h 57m

$339

ChicagoHelena

ORD Chicago O'Hare Intl - HLN Helena

ORDHLN

Chicago O'Hare Intl

Sat 1/30

8:00 am-4:23 pm

1 stop9h 23m

Helena

Tue 2/2

5:00 pm-2:21 pm

1 stop20h 21m

$393

Quickest round-trip

St. LouisHelena

STL Lambert-St Louis - HLN Helena

STLHLN

Lambert-St Louis

Sat 2/6

9:13 am-1:27 pm

1 stop5h 14m

Helena

Tue 2/9

2:30 pm-8:59 pm

1 stop5h 29m

$429

ChicagoHelena

ORD Chicago O'Hare Intl - HLN Helena

ORDHLN

Chicago O'Hare Intl

Sat 1/30

2:37 pm-8:59 pm

1 stop7h 22m

Helena

Tue 2/2

2:30 pm-9:31 pm

1 stop6h 01m

$429

St. LouisHelena

STL Lambert-St Louis - HLN Helena

STLHLN

Lambert-St Louis

Sat 2/6

9:13 am-1:27 pm

1 stop5h 14m

Helena

Tue 2/9

7:00 am-4:53 pm

2 stops8h 53m

$434

St. LouisHelena

STL Lambert-St Louis - HLN Helena

STLHLN

Lambert-St Louis

Sat 9/26

10:40 am-10:29 pm

2 stops12h 49m

Helena

Wed 9/30

12:57 pm-11:16 pm

2 stops9h 19m

$439

St. LouisHelena

STL Lambert-St Louis - HLN Helena

STLHLN

Lambert-St Louis

Sat 2/6

3:00 pm-8:59 pm

1 stop6h 59m

Helena

Tue 2/9

7:00 am-12:43 pm

1 stop4h 43m

$449

PeoriaHelena

PIA Greater Peoria - HLN Helena

PIAHLN

Greater Peoria

Sat 1/30

10:40 am-8:59 pm

2 stops11h 19m

Helena

Wed 2/3

2:30 pm-8:47 pm

1 stop5h 17m

$449

ChicagoHelena

ORD Chicago O'Hare Intl - HLN Helena

ORDHLN

Chicago O'Hare Intl

Sat 10/24

1:30 pm-9:08 pm

1 stop8h 38m

Helena

Mon 10/26

2:23 pm-9:30 pm

1 stop6h 07m

$449

St. LouisHelena

STL Lambert-St Louis - HLN Helena

STLHLN

Lambert-St Louis

Sat 2/6

1:09 pm-8:59 pm

2 stops8h 50m

Helena

Tue 2/9

2:30 pm-8:59 pm

1 stop5h 29m

$454

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Helena

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

Airlines

Other information

What is the cheapest airline that flies from Illinois to Helena?

Alaska Airlines, Delta, and United Airlines are the most popular carriers operating from Illinois to Helena

What airlines fly to Helena?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Helena from Illinois according to our data. American Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 5 different airlines that fly to Helena on a routine basis, so you have a few additional options to choose from.

Cheap Illinois to Helena flight deals and tips

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

Best Price Found	$330
Fastest flight time	5h 29m
Direct flights	None

The best one-way flight to Helena from Illinois in the past 72 hours is $330. The best round-trip flight deal from Illinois to Helena found on momondo in the last 72 hours is $339.

The fastest flight from Illinois to Helena takes 5h 29m

There are no direct flights from Illinois to Helena. There are no popular flight routes from Illinois to Helena.

Search flight deals

Frequently asked questions about flying from Illinois to Helena

When did momondo last update prices for flights from Illinois to Helena Airport?
Prices for flights from Illinois to Helena Airport were last updated today.
How old do you have to be to fly from Illinois to Helena Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Helena Airport.
What documentation or ID do you need to fly to Helena Airport?
The travel and health documents required for your trip to Helena Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Helena Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Illinois to Helena flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Helena from Illinois.

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

Yes. momondo can track prices for Illinois to Helena flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.