$293 Find Cheap Flights from Oslo Airport to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Oslo Gardermoen to Illinois departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oslo to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Oslo to Illinois, as well as popular online travel agencies
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Book Cheap Oslo Gardermoen to Illinois Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Oslo Gardermoen to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Oslo Gardermoen to Illinois

Mon, Dec 15 - Sun, Dec 28
Scandinavian Airlines Logo
8:00 am - 4:45 pmOSL-ORD
15h 45m1 stop
Scandinavian Airlines Logo
7:20 pm - 4:40 pmORD-OSL
14h 20m1 stop
$395Scandinavian Airlines
Find Deal
Mon, Nov 17 - Sun, Nov 23
Icelandair Logo
1:10 pm - 5:20 pmOSL-ORD
11h 10m1 stop
Icelandair Logo
6:30 pm - 11:35 amORD-OSL
10h 05m1 stop
$397Icelandair
Find Deal
Sun, Nov 16 - Sat, Nov 29
Icelandair Logo
9:30 pm - 5:20 pmOSL-ORD
26h 50m1 stop
Icelandair Logo
6:30 pm - 8:35 pmORD-OSL
19h 05m1 stop
$398Icelandair
Find Deal
Sun, Mar 1 - Sun, Mar 29
Icelandair Logo
1:05 pm - 5:20 pmOSL-ORD
11h 15m1 stop
Icelandair Logo
7:25 pm - 12:35 pmORD-OSL
10h 10m1 stop
$405Icelandair
Find Deal
Thu, Dec 4 - Mon, Dec 8
Scandinavian Airlines Logo
5:55 am - 4:45 pmOSL-ORD
17h 50m1 stop
Scandinavian Airlines Logo
7:20 pm - 2:15 pmORD-OSL
11h 55m1 stop
$407Scandinavian Airlines
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Sun, Dec 14 - Sat, Jan 10
KLM Logo
7:00 pm - 2:20 pmOSL-ORD
26h 20m1 stop
KLM Logo
4:25 pm - 6:15 pmORD-OSL
18h 50m1 stop
$425KLM
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Sun, Dec 14 - Sat, Jan 10
British Airways Logo
7:20 am - 3:25 pmOSL-ORD
15h 05m1 stop
British Airways Logo
11:39 am - 10:30 amORD-OSL
15h 51m2 stops
$451British Airways
Find Deal
Sat, Feb 28 - Sat, Mar 28
British Airways Logo
7:10 am - 5:29 pmOSL-ORD
17h 19m2 stops
British Airways Logo
9:15 pm - 11:35 pmORD-OSL
19h 20m1 stop
$465British Airways
Find Deal
Wed, Nov 19 - Sun, Nov 23
Lufthansa Logo
6:05 am - 1:55 pmOSL-STL
14h 50m1 stop
Lufthansa Logo
6:43 pm - 5:30 pmSTL-OSL
15h 47m2 stops
$518Lufthansa
Find Deal
Wed, Nov 19 - Sun, Nov 23
Lufthansa Logo
6:05 am - 7:16 pmOSL-STL
20h 11m2 stops
Lufthansa Logo
6:43 pm - 5:30 pmSTL-OSL
15h 47m2 stops
$524Lufthansa
Find Deal
Booking Insights

KAYAK's insights & trends for Oslo Gardermoen to Illinois flights

Get data-powered insights and trends into flights from Oslo Gardermoen to Illinois to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Oslo Gardermoen Airport to Illinois?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Oslo Gardermoen Airport to Illinois departing in December.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Oslo Gardermoen Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Oslo Gardermoen Airport to Illinois is September, when tickets cost $441 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $678 and $631 respectively.

What’s the cheapest day of the week to fly from Oslo Airport to Illinois?

The average price of all round-trip flights from Oslo Gardermoen Airport to Illinois clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Oslo Airport to Illinois, look for departures on Thursdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from Illinois, Tuesday is the cheapest day to fly and Saturday is the most expensive.

How far in advance should I book a flight from Oslo Gardermoen Airport to Illinois?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Oslo Gardermoen Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Oslo Gardermoen Airport to Illinois, you should book around 3 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$293
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 29% increase in price.
Flight from Oslo to Chicago O'Hare Airport

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Oslo Airport to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Oslo Airport to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Oslo Airport to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Oslo Airport to Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Oslo Airport to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Oslo Airport to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Oslo Airport to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Oslo Airport to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $491 on average. Morning departures are around 26% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the evening, which is peak travel time and where the average cost of a ticket is $662.

Reviews of the top 4 airlines serving from Oslo Gardermoen to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Oslo to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Oslo Gardermoen to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Scandinavian AirlinesOverall score based on 1564 reviews
6.6Food
8.0Crew
7.3Comfort
6.6Entertainment
7.6Boarding
Airline reviews

Scandinavian was perfect. Nice A350 with an on time departure and an an experienced crew. What a difference from TAP.

10.0 ExcellentKokopelli’s dad, Oct 2025CPH - LAX
Read more Scandinavian Airlines reviews

Scandinavian was perfect. Nice A350 with an on time departure and an an experienced crew. What a difference from TAP.

The staff were great, the food was good. I just hate being crammed in a tuna can for 10 hours cause I can’t afford a better seat.

Really like this airline. Best food for airlines and comfortable seats and attentive staff. Delay was due to air traffic.

Great logistics and timeliness as we arrived quite early. Flight smooth and fast. Excellent entertainment. Plane itself was a bit tired and the crew mostly indifferent. Baggage took forever but that’s on CPH. Would use SAS again for sure.

Baggage was mis-handled; food and grocery items in the baggage were damaged.

It was a good flight. Everyone was professional and the flight was smooth.

SAS has too many other airliners. They don't need to exist.

Service, food was outstanding. They make every effort to make sure that your long flight is as comfortable as possible. The only reason I did not rate them excellent is the way they handled our cancelled flight. They were great about re-booking except for the hotel. A communication breakdown ensued regarding who was booking the hotel for our overnight stay: the city where the flight was cancelled or the city where we were going to lay over for the night. In the end, neither of them did, so we ended up doing it ourselves and were extremely lucky to get a room at all. Given that, I still would not hesitate to fly with them anytime.

I paid extra for our seats on the way coming back from Stockholm to New York the seats were changed and it was totally waved. This happened to three more passengers.

great crew, professional, funny, and great service. good condition plane too! great experience

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

If there was a disclaimer regarding food service or lack thereof, l missed it. If l had known l would have prepared better. Same with transferring at Reykjavik. No information about disembarking via stairs into rain, slush and puddles deep enough to swallow a foot. After being treated to haute cuisine restaurants and warm inviting environment during the flight, the airport is, let’s be kind, disappointing. Plane was comfortable, Airbus, staff were welcoming enough. I would likely try the route again. Maybe have a night and day in Iceland. Maybe not.

They had a 4 hour delay and left my luggage in Iceland and it didn’t arrive in Portland until 11/1

The boarding process seem to take longer than necessary, resulting in a 20+ minute delay

It was too cold in the plane my feet froze

Service was excellent. Food and drinks were very good except for a greasy lump of a donut at the end of the flight that left us both feeling internally disgusted.

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

I flew Icelandair with my partner from Prague to the US. Overall flight time was around 12 hours, with a connecting flight in Iceland. I have flown internationally for years and with multiple airlines. Every airline serves you a meal when traveling internationally. Icelandair not only did not offer an inclusive meal, but they did not even offer a snack. The only things they served over our long flight was water and coffee. Ridiculous! Never again will I fly with Icelandair.

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

The seat space seemed small especially when the person ahead reclined but other than that, very good.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

Food was poor quality and the screens for entertainment didn’t work properly

It was a short flight, everything was good with it.

I darted through the Frankfurt airport to make my connecting flight. I asked if it was a possibility to upgrade and the agent did. This was the kindest gesture and it made up for the previous delayed flight and distress/anxiety of anticipating that Zi was going to miss my Frankfurt-Chicago connection. I cannot express my gratitude for the upgrade.. I am 5feet 10 inches do the leg space was amazing.

I meant this flight was not good, the one from Tirana to Frankfurt was better!

I was very grateful for Lufthansa's role in organizing mobility support. The touchscreen on my seat was faulty: slow, stained (I couldn't get it clean), and glitchy. This made selecting movies extremely time consuming, and twice I had to start all over from the beginning.

The crew was the best I’ve ever encountered. Business class was spacious, immaculate, and very modern.

I wish seats were not reclinable. It's so claustrophobic when the person in front of you spends most of a nine hour flight leaned all the way back. The crew was really nice though and the dinner (red Thai curry) was pretty compelling.

Our flights were severely delayed, then canceled and we had to fly out next day with no sleep accommodation help. This led to our baggage being lost and the service reps after baggage couldn’t be bothered to help. They kept sending us to different counters when we were at the right counter to begin with. The only saving grace was the angel woman supervisor with blond hair who helped us put in a missing baggage claim.

The boarding process was chaotic at LHR and the seat was not as comfortable as other airlines....

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

Great flight. One unique individual assisting in business class who should have not been there. Need more generic meals, not British centric.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

There might be more food options for people who can't eat so much starch/sugar/bread/rice. Meat, cheese, walnuts/pecans for snack, maybe jerky or other kinds of meat-based snacks would be better than bread and rice and sweets. I had an extra chardonnay, which was fine. The entertainment was great.

Unfortunately, my flight was cancelled because of some sort of emergency over the Atlantic and had to return to London. While I think British Airways made every effort to mitigate the situation, I must say it was still pretty unpleasant. I do appreciate the fact, however, that British Airways put my safety first…and I think the effort to correct a bad situation was very sincere. But I think the process might be handled better in future.

Crew service was poor and very little difference between premium economy and economy. Disappointed.

My bags never made it on the flight and I now have to wait for them to arrive hopefully tomorrow. You can’t even track your bags in the app to see where they are since they didn’t arrive. You have to file a claim and then wait for them to inform you when you will receive your bag. We were already delayed for an hour due to baggage so I don’t understand how my bag didn’t make the flight.

One of the worst experience given the middle seat even asked for the change no one honored,boarded at the end and overall one of the worst experience

It was good although our flight to the UK was cancelled and rescheduled for two days later. This was after we were already seated on the plane. We missed the first leg of our trip. BA did put us up at a hotel and paid for our meals but we lost our hotel costs in Glasgow.

Everything you need to know for your flight from Oslo Gardermoen to Illinois

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