$455 Find Cheap Flights from Trondheim 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 Trondheim to Illinois departing on 9/25. 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

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 Trondheim 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 Trondheim to Illinois, as well as popular online travel agencies
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Flight Deals

Book Cheap Trondheim 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 Trondheim 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 Trondheim to Illinois

Wed, Sep 24 - Mon, Sep 29
KLM Logo
6:00 am - 2:40 pmTRD-ORD
15h 40m1 stop
KLM Logo
6:50 pm - 4:30 pmORD-TRD
14h 40m2 stops
$513KLM
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Wed, Sep 24 - Mon, Sep 29
KLM Logo
6:00 am - 2:40 pmTRD-ORD
15h 40m1 stop
KLM Logo
4:40 pm - 4:30 pmORD-TRD
16h 50m1 stop
$514KLM
Find Deal
Thu, Dec 4 - Mon, Dec 8
Delta Logo
6:15 am - 6:22 pmTRD-ORD
19h 07m2 stops
Delta Logo
4:25 pm - 4:35 pmORD-TRD
17h 10m1 stop
$517Delta
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Thu, Dec 4 - Mon, Dec 8
Delta Logo
6:15 am - 8:31 pmTRD-ORD
21h 16m2 stops
Delta Logo
5:03 pm - 4:35 pmORD-TRD
16h 32m2 stops
$518Delta
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Thu, Dec 4 - Mon, Dec 8
Scandinavian Airlines Logo
5:30 am - 4:45 pmTRD-ORD
18h 15m1 stop
Scandinavian Airlines Logo
7:20 pm - 7:05 pmORD-TRD
16h 45m1 stop
$551Scandinavian Airlines
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Wed, Sep 24 - Mon, Sep 29
Delta Logo
6:00 am - 5:59 pmTRD-ORD
18h 59m2 stops
Delta Logo
9:10 am - 11:30 amORD-TRD
19h 20m2 stops
$566Delta
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Thu, Dec 4 - Mon, Dec 8
KLM Logo
5:10 pm - 2:20 pmTRD-ORD
28h 10m1 stop
KLM Logo
4:25 pm - 4:35 pmORD-TRD
17h 10m1 stop
$568KLM
Find Deal
Thu, Dec 4 - Mon, Dec 8
KLM Logo
5:10 pm - 2:20 pmTRD-ORD
28h 10m1 stop
KLM Logo
4:25 pm - 4:35 pmORD-TRD
17h 10m1 stop
$569KLM
Find Deal
Wed, Sep 24 - Mon, Sep 29
Logo
6:00 am - 3:00 pmTRD-ORD
16h 00m2 stops
Logo
5:00 pm - 8:30 pmORD-TRD
20h 30m3 stops
$750
Find Deal
Wed, Sep 24 - Mon, Sep 29
Logo
3:55 pm - 6:15 pmTRD-ORD
33h 20m3 stops
Logo
7:25 pm - 9:35 amORD-TRD
31h 10m3 stops
$843
Find Deal
Booking Insights

KAYAK's insights & trends for Trondheim to Illinois flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Trondheim 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 Trondheim to Illinois is November, when tickets cost $446 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $911 and $806 respectively.

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Good to know

Low seasonSeptember
Cheapest flight$455
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from Trondheim to Chicago

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Trondheim 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 Trondheim to Illinois.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Trondheim 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 Trondheim 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 Trondheim 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 Trondheim 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 Trondheim to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Trondheim to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Trondheim 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 Trondheim 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 1484 reviews
7.7Boarding
6.7Entertainment
7.3Comfort
6.7Food
8.0Crew
Airline reviews

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.

8.0 ExcellentAnonymous, Aug 2025TRD - OSL
Read more Scandinavian Airlines reviews

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.

Online check in of SAS is very poor. Even the kiosks at London had system problems. Either it would print boarding tickets or luggage tags. Many other customers had problems . SAS staff was good and helped.

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

When my flight was changed from delays they were quick to rebook me.

The seats have no legroom. I was bruised on my knees for having them pressed up against the seat in front of me. Then I got food poisoning from the special meal I ordered. Pretty horrible all around.

Airline left me stranded in the U.S. gave me an unrequested refund of 40% of booking and canceled my trip back! When I asked why, the said “we don’t have to tell you why”. “But you can rebook”. Never again! Paid 2x and rebooked on Austrian. What a joke!

Painful seats for a 10 hour flight. There’s a very hard flat board in the seat that goes up to half the back and after 7 hours it gets impossible to find the right position to avoid the pain.

I loved it the staff across the terminal process from entry to airport and boarding of flight excellent. Onboard aircraft the flight attendants crew were fabooois lovely and always assisting

SAS is very good at service, the lounge was great, and flights were on time. Boarding is fast and efficient!

Everything you need to know for your flight from Trondheim to Illinois

Information on your arrival and departure airports

Trondheim (TRD)

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