Flights from Idaho Falls Airport to Illinois

Flight deals from Idaho Falls Airport to Illinois

Looking for a cheap last-minute deal or the best roundtrip flight from Idaho Falls Airport to Illinois? If you want to travel next month, roundtrip fares start from £302. Find the lowest prices on one-way and roundtrip tickets right here.

Chicago.£192 per passenger.Departing Fri, Jul 31, returning Wed, Aug 5.Round-trip flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departing from Idaho Falls on Fri, Jul 31, arriving in Chicago Rockford.Inbound indirect flight with Allegiant Air, departing from Chicago Rockford on Wed, Aug 5, arriving in Idaho Falls.Price includes taxes and charges.From £192, select.

Moline.£403 per passenger.Departing Fri, Jun 26, returning Thu, Jul 2.Round-trip flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departing from Idaho Falls on Fri, Jun 26, arriving in Moline.Inbound indirect flight with Allegiant Air, departing from Moline on Thu, Jul 2, arriving in Idaho Falls.Price includes taxes and charges.From £403, select.

Bloomington.£529 per passenger.Departing Sat, Jun 20, returning Fri, Jun 26.Round-trip flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departing from Idaho Falls on Sat, Jun 20, arriving in Central Illinois Regional.Inbound indirect flight with Allegiant Air, departing from Central Illinois Regional on Fri, Jun 26, arriving in Idaho Falls.Price includes taxes and charges.From £529, select.

Springfield.£616 per passenger.Departing Sat, Jun 20, returning Fri, Jun 26.Round-trip flight with Allegiant Air.Outbound indirect flight with Allegiant Air, departing from Idaho Falls on Sat, Jun 20, arriving in Springfield.Inbound indirect flight with Allegiant Air, departing from Springfield on Fri, Jun 26, arriving in Idaho Falls.Price includes taxes and charges.From £616, select.

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Flying from Idaho Falls Airport to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	£191
Cheapest month to fly	July
Average flight time	3 hrs, 28 mins
Average flights per week	22
Most popular airline	SkyWest Airlines

How to find cheap flights from Idaho Falls Airport to Illinois

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Idaho Falls Airport to Illinois. Other savvy travelers recently found round-trip flights from £192 and one-way tickets from £123. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in July

The cheapest time to fly from Idaho Falls Airport to Illinois is currently July.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Idaho Falls Airport to anywhere you choose in Illinois.

Watch as flight prices go up and down

With Price Alerts, we'll let you know when flight prices from Idaho Falls Airport to your chosen airport in Illinois go up or down so you can book when the time is just right.

Relax – these are fee-free plane tickets

With us, there are no added fees – the Illinois Airport to Illinois flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

Are there any direct flights from Idaho Falls Airport to Illinois?

There are currently no direct flights from Idaho Falls Airport to Illinois, but we've found some other routes to United States – check them out now.

What is the average price of a flight from Idaho Falls Airport to Illinois?

We looked at all of the upcoming round-trip flights from Idaho Falls Airport to Illinois we could find over the next 12 months. It looks like £192 is the best price. This is good, compared to the average Illinois ticket price of £435.

What is the cheapest month to fly from Idaho Falls Airport to Illinois?

The cheapest month to fly from Idaho Falls Airport to Moline Airport is currently June.
The cheapest month to fly from Idaho Falls Airport to Central Illinois Regional Airport is currently June.
The cheapest month to fly from Idaho Falls Airport to Chicago Rockford Airport is currently July.
And the cheapest month to fly from Idaho Falls Airport to Springfield Airport is usually June.

On which upcoming date is it cheapest to fly from Idaho Falls Airport to Illinois?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Idaho Falls Airport to Illinois on Friday, July 31, 2026.

If I'm flying from Idaho Falls Airport, where in Illinois is cheapest to fly to?

If you're flying from Idaho Falls, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago Rockford.