Question 1

What airlines fly to Oslo?

Accepted Answer

Icelandair, Scandinavian Airlines and United Airlines are the top three most popular airlines that fly to Oslo from Illinois according to our data. Icelandair is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Oslo. Keep in mind that there are 9 different airlines that fly to Oslo on a routine basis, so you have a few additional options to choose from.

Question 2

How far in advance should I book a flight to Oslo?

Accepted Answer

You are more likely to see cheaper flights to Oslo from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Oslo for around $598 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oslo from Illinois for as low as $476 on momondo.

Question 3

What is the cheapest month to fly to Oslo?

Accepted Answer

The month of January is, on average, the cheapest month to fly to Oslo from Illinois, with most prices found around $420. If you’re not able to fly to Oslo in January, then November is your next best option. Flight prices from Illinois to Oslo during November average around $450.

Question 4

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

Accepted Answer

Icelandair, TAP AIR PORTUGAL, and United Airlines are the most popular carriers operating from Illinois to Oslo

Question 5

How long does it take to fly to Oslo?

Accepted Answer

Flight times vary depending on what airport in Illinois you fly out of and what airport in Oslo you fly into. For example, flying from Chicago to Oslo Gardermoen Airport takes 11h 47m on average. On the other hand, flying from Moline to Oslo Gardermoen Airport takes 22h 34m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

Question 6

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

Accepted Answer

Prices for flights from Illinois to Oslo refresh daily.

Question 7

How many operators does momondo search for flights from Illinois to Oslo?

Accepted Answer

As of March 2026, there are 9 operators available to choose from for flights from Illinois to Oslo.

Question 8

How old do you have to be to fly from Illinois to Oslo?

Accepted Answer

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 Oslo.

Question 9

What documentation or ID do you need to fly to Oslo?

Accepted Answer

The travel and health documents required for your trip to Oslo 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 Oslo. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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