Cheap flights from Illinois to Helena from $202
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 Helena departing on 9/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
What is the cheapest day to depart on your flight to Helena?
The cheapest day to depart from Illinois to Helena is on a Wednesday. Travelers who choose to depart for Helena on a Wednesday will often find tickets for as low as $477. The most expensive day to fly to Helena is Monday, with ticket prices averaging around $1,040.
What is the cheapest time of day to depart on your flight to Helena?
According to our data, the cheapest time of day to fly to Helena is in the morning. momondo users have found flights departing from Illinois to Helena in the morning for as low as $557. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Helena is in the afternoon when prices are around $863.
What is the cheapest airline that flies from Illinois to Helena?
Hawaiian Airlines, Alaska Airlines, and Delta are the most popular carriers operating from Illinois to Helena
What airlines fly to Helena?
United Airlines, American Airlines and Alaska Airlines are the top three most popular airlines that fly to Helena from Illinois according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Helena. Keep in mind that there are 6 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
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 many operators does momondo search for flights from Illinois to Helena Airport?
The number of operators available for flights from Illinois to Helena Airport is 1 as of May 2025.
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.
Best airlines flying from Illinois to Helena
Compare and see reviews for airlines that fly from Illinois to Helena with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $534 | Free Cancellation | Rating 7.4 8,710 reviews |
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.