How long does it take to fly to Helena?

On average, it takes 3h 09m 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 36m.

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.

$150 Cheap Flights from Illinois to Helena in 2026

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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.

2:01 pm - 9:25 pm

ORD

HLN

8h 24m

1 stop

2:30 pm - 10:54 pm

HLN

ORD

7h 24m

1 stop

$289United Airlines

Fri, Mar 6 - Mon, Mar 9

5:00 pm - 10:33 pm

ORD

HLN

6h 33m

1 stop

5:45 am - 11:52 am

HLN

ORD

5h 07m

1 stop

$299Delta

Sat, May 23 - Sun, May 31

8:54 am - 1:39 pm

STL

HLN

5h 45m

1 stop

2:25 pm - 8:54 pm

HLN

STL

5h 29m

1 stop

$314United Airlines

Wed, Apr 22 - Sun, Apr 26

5:29 pm - 3:59 pm

ORD

HLN

23h 30m

1 stop

4:36 pm - 11:59 pm

HLN

ORD

30h 23m

2 stops

$338Alaska Airlines

Fri, Mar 6 - Mon, Mar 9

7:00 am - 3:59 pm

STL

HLN

9h 59m

1 stop

4:36 pm - 11:59 pm

HLN

STL

6h 23m

1 stop

$339Alaska Airlines

Thu, Feb 26 - Mon, Mar 2

7:00 am - 3:59 pm

ORD

HLN

9h 59m

1 stop

4:36 pm - 2:11 pm

HLN

ORD

20h 35m

1 stop

$339Alaska Airlines

Thu, Feb 26 - Mon, Mar 2

10:00 am - 9:33 pm

STL

HLN

12h 33m

2 stops

2:25 pm - 8:54 pm

HLN

STL

5h 29m

1 stop

$344United Airlines

Wed, Apr 22 - Sun, Apr 26

7:00 am - 3:59 pm

ORD

HLN

9h 59m

1 stop

4:36 pm - 11:59 pm

HLN

ORD

30h 23m

2 stops

$360Alaska Airlines

Fri, Mar 6 - Mon, Mar 9

2:01 pm - 9:25 pm

ORD

HLN

8h 24m

1 stop

2:30 pm - 9:29 pm

HLN

ORD

5h 59m

1 stop

$369United Airlines

Fri, Mar 13 - Sat, Mar 21

1:29 pm - 10:27 pm

MDW

HLN

9h 58m

2 stops

5:30 am - 5:54 pm

HLN

MDW

11h 24m

2 stops

$1,097Delta

Fri, Mar 6 - Mon, Mar 9

United Airlines flights from Illinois to Helena

Our best United Airlines deals on Illinois to Helena flight tickets

United Airlines

Mar 6

ORD2:01 pmChicago O'Hare Intl

8h 24m

1 stop

HLN9:25 pmHelena

Mar 9

HLN2:30 pmHelena

7h 24m

1 stop

ORD10:54 pmChicago O'Hare Intl

$289

United Airlines

Apr 22

STL8:54 amLambert-St Louis

5h 45m

1 stop

HLN1:39 pmHelena

Apr 26

HLN2:25 pmHelena

5h 29m

1 stop

STL8:54 pmLambert-St Louis

$314

United Airlines

Apr 22

STL10:00 amLambert-St Louis

12h 33m

2 stops

HLN9:33 pmHelena

Apr 26

HLN2:25 pmHelena

5h 29m

1 stop

STL8:54 pmLambert-St Louis

$344

Alaska Airlines flights from Illinois to Helena

Our best Alaska Airlines deals on Illinois to Helena flight tickets

Alaska Airlines

Mar 6

ORD5:29 pmChicago O'Hare Intl

23h 30m

1 stop

HLN3:59 pmHelena

Mar 9

HLN4:36 pmHelena

30h 23m

2 stops

ORD11:59 pmChicago O'Hare Intl

$338

Alaska Airlines

Feb 26

ORD7:00 amChicago O'Hare Intl

9h 59m

1 stop

HLN3:59 pmHelena

Mar 2

HLN4:36 pmHelena

20h 35m

1 stop

ORD2:11 pmChicago O'Hare Intl

$339

Alaska Airlines

Mar 6

ORD7:00 amChicago O'Hare Intl

9h 59m

1 stop

HLN3:59 pmHelena

Mar 9

HLN4:36 pmHelena

30h 23m

2 stops

ORD11:59 pmChicago O'Hare Intl

$360

Fly from

Fly to

Route

Depart

Return

Price

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Fri 3/6

2:01 pm-9:25 pm

1 stop8h 24m

Helena

Mon 3/9

2:30 pm-10:54 pm

1 stop7h 24m

$289

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Sat 5/23

5:00 pm-10:33 pm

1 stop6h 33m

Helena

Sun 5/31

5:45 am-11:52 am

1 stop5h 07m

$299

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Wed 4/22

8:54 am-1:39 pm

1 stop5h 45m

Helena

Sun 4/26

2:25 pm-8:54 pm

1 stop5h 29m

$314

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Fri 3/6

5:29 pm-3:59 pm

1 stop23h 30m

Helena

Mon 3/9

4:36 pm-11:59 pm

2 stops30h 23m

$338

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Thu 2/26

7:00 am-3:59 pm

1 stop9h 59m

Helena

Mon 3/2

4:36 pm-11:59 pm

1 stop6h 23m

$339

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Thu 2/26

7:00 am-3:59 pm

1 stop9h 59m

Helena

Mon 3/2

4:36 pm-2:11 pm

1 stop20h 35m

$339

St. LouisHelena

STL - HLN

STLHLN

Lambert-St Louis

Wed 4/22

10:00 am-9:33 pm

2 stops12h 33m

Helena

Sun 4/26

2:25 pm-8:54 pm

1 stop5h 29m

$344

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Fri 3/6

7:00 am-3:59 pm

1 stop9h 59m

Helena

Mon 3/9

4:36 pm-11:59 pm

2 stops30h 23m

$360

ChicagoHelena

ORD - HLN

ORDHLN

Chicago O'Hare Intl

Fri 3/13

2:01 pm-9:25 pm

1 stop8h 24m

Helena

Sat 3/21

2:30 pm-9:29 pm

1 stop5h 59m

$369

ChicagoHelena

MDW - HLN

MDWHLN

Chicago Midway

Fri 3/6

1:29 pm-10:27 pm

2 stops9h 58m

Helena

Mon 3/9

5:30 am-5:54 pm

2 stops11h 24m

$1,097

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 Alaska Airlines 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 49% 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

Fastest flight time	5h 15m
Direct flights	None

The fastest flight from Illinois to Helena takes 5h 15m

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

Search flight deals

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.