Cheap Oslo to Illinois Flights from C$304

Flight deals from Oslo to Illinois

Looking for cheap flights from Oslo to Illinois, or a last-minute trip? Find the lowest prices on one-way and round-trip flights right here.

Chicago.C$497 per passenger.Departing Wed, Oct 1, returning Sun, Oct 12.Round-trip flight with Icelandair.Outbound indirect flight with Icelandair, departing from Oslo Gardermoen on Wed, Oct 1, arriving in Chicago O'Hare International.Inbound indirect flight with Icelandair, departing from Chicago O'Hare International on Sun, Oct 12, arriving in Oslo Gardermoen.Price includes taxes and charges.From C$497, select.

Moline.C$1,454 per passenger.Departing Sat, Jul 5, returning Tue, Jul 8.Round-trip flight with Lufthansa.Outbound indirect flight with Lufthansa, departing from Oslo Gardermoen on Sat, Jul 5, arriving in Moline.Inbound indirect flight with Lufthansa, departing from Moline on Tue, Jul 8, arriving in Oslo Gardermoen.Price includes taxes and charges.From C$1,454, select.

Peoria.C$1,463 per passenger.Departing Tue, Jun 3, returning Sat, Jun 7.Round-trip flight with Lufthansa.Outbound indirect flight with Lufthansa, departing from Oslo Gardermoen on Tue, Jun 3, arriving in Greater Peoria.Inbound indirect flight with Lufthansa, departing from Greater Peoria on Sat, Jun 7, arriving in Oslo Gardermoen.Price includes taxes and charges.From C$1,463, select.

Flying from Oslo to Illinois

Arm yourself with these facts on the fly.

Cheapest flight found	C$304, Chicago
Cheapest month to fly	June
Cheapest airport to fly from	Oslo Gardermoen

How to find cheap flights from Oslo to Illinois

We've compared the best online travel agents and flight providers on the Internet to find the cheapest plane tickets from Oslo to Illinois. Other savvy travelers recently found round-trip flights from C$497 and one-way tickets from C$304. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from Oslo Gardermoen into Chicago

At the moment, the lowest-priced flight tickets to Illinois are from Oslo Gardermoen Airport to Chicago O'Hare International Airport.

Fly in June

We crunched the flight calendar and found the cheapest time to fly from Oslo to Illinois is currently June.

Fly on a Tuesday

From our data, we can see that Tuesday seems to be the cheapest time to fly from Oslo to Illinois.

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 Oslo 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 Oslo to 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 Oslo to Illinois flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average Oslo to Illinois flight price?

We looked at all of the upcoming round-trip flights from Oslo to Illinois we could find over the next 12 months. It looks like C$497 is the best price. This is good, compared to the average Illinois ticket price of C$701.

What is the cheapest month to fly from Oslo to Illinois?

The cheapest month to fly from Oslo to Chicago O'Hare International Airport is currently October. The cheapest month to fly from Oslo to Moline Airport is usually July. And the cheapest month to fly from Oslo to Greater Peoria Airport is usually June.

On which upcoming date is it cheapest to fly from Oslo to Illinois?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Oslo to Illinois on Wednesday, October 1, 2025.

Are there any direct flights from Oslo to Illinois?

Currently, there aren't any direct flights from Oslo to Illinois, but you can still fly with a stopover.

If I'm flying from Oslo, where in Illinois is cheapest to fly to?

If you're flying from Oslo, the cheapest city in Illinois to fly into is Chicago. The cheapest airport serving Chicago at the moment is Chicago O'Hare International.

Flights from Oslo to Illinois