Cheap flights from Oslo to Illinois from $361
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oslo to Illinois departing on 5/26. 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 Oslo to Illinois
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 month to fly to Illinois?
The cheapest month to fly to Illinois from Oslo is in November. Flight prices, which tend to average around $412, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $422.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from Oslo to Illinois is on a Thursday when prices can be found for as low as $467. Flights from Oslo to Illinois on a Saturday will generally be more expensive and average around $583. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Oslo to Illinois during this time can be as low as $491. Flights in the afternoon are often more expensive with an average ticket price of $662.
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from Oslo when booking 25 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $564 when searching 25 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Oslo for as low as $478 on momondo.
Cheap Oslo to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Oslo to Illinois
When did momondo last update prices for flights from Oslo to Illinois?
Prices for flights from Oslo to Illinois are updated daily.
How many operators does momondo search for flights from Oslo to Illinois?
The number of operators available for flights from Oslo to Illinois is 2 as of May 2025.
How old do you have to be to fly from Oslo to Illinois?
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 Oslo to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
Best airlines flying from Oslo to Illinois
Compare and see reviews for airlines that fly from Oslo to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $416 | Free Cancellation | Rating 6.6 6,842 reviews | |||
| PriceFrom $507 | Free Cancellation | Rating 7.0 487 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Oslo to Illinois?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Oslo.
Can I find flights from Oslo to Illinois with flexible booking policies on momondo?
Flights from Oslo to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Oslo to Illinois?
momondo provides multiple filters to help you find the best flight to Illinois from Oslo. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Oslo to Illinois right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Oslo to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.