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$357+ Cheap flights from Trondheim (TRD) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
TRD — ORD
Mar 6 — Mar 131
Fri 3/6
Fri 3/13
1 adult, Economy
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Cheap flight deals from Trondheim to Illinois

Cheapest flights from Trondheim to Illinois
Explore the most affordable flight options available from Trondheim to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Ticket deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:15 am
TRD
-
ORD
1 stop15h 05m
KLM
Wed 2/254:25 pm
ORD
-
TRD
1 stop23h 30m
KLM
Deal found 2/3$451
This Delta deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:15 am
TRD
-
ORD
2 stops22h 15m
Delta
Wed 2/254:25 pm
ORD
-
TRD
1 stop17h 10m
Delta
Deal found 2/3$506
This Scandinavian Airlines deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/237:45 pm
TRD
-
ORD
1 stop27h 25m
Scandinavian Airlines
Mon 4/276:04 am
ORD
-
TRD
2 stops25h 06m
Scandinavian Airlines
Deal found 2/2$612
This Travelis deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:15 am
TRD
-
ORD
1 stop15h 05m
KLM
Fri 4/104:20 pm
ORD
-
TRD
1 stop23h 30m
KLM
Deal found 2/2$920
This Travelis deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/277:45 am
TRD
-
ORD
2 stops16h 00m
Scandinavian Airlines
Fri 4/107:15 pm
ORD
-
TRD
1 stop16h 55m
Scandinavian Airlines
Deal found 2/3$932

Find flight deals from Trondheim to Illinois

Keep the following information in mind while searching for Trondheim to Illinois flight deals. Data was last updated February 4, 2026.

Round-trip from

$451
(Ticket)

One-way from

$357
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$605
From Trondheim Vaernes to Illinois
Search Deals
One-way flight from Trondheim Vaernes to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Trondheim to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Trondheim to Illinois that are best for you.

Fly from

Trondheim

Fly to

Illinois

Route

Depart

Return

Price

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Fri 2/20

6:15 am-2:20 pm

1 stop15h 05m

Chicago O'Hare Intl

Wed 2/25

4:25 pm-10:55 pm

1 stop23h 30m

$451

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Fri 2/20

6:15 am-9:30 pm

2 stops22h 15m

Chicago O'Hare Intl

Wed 2/25

4:25 pm-4:35 pm

1 stop17h 10m

$506

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Thu 4/23

7:45 pm-4:10 pm

1 stop27h 25m

Chicago O'Hare Intl

Mon 4/27

6:04 am-2:10 pm

2 stops25h 06m

$612

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Fri 3/27

6:15 am-3:20 pm

1 stop15h 05m

Chicago O'Hare Intl

Fri 4/10

4:20 pm-10:50 pm

1 stop23h 30m

$920

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Fri 3/27

7:45 am-5:45 pm

2 stops16h 00m

Chicago O'Hare Intl

Fri 4/10

7:15 pm-7:10 pm

1 stop16h 55m

$932

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Sun 4/5

9:00 am-5:50 pm

3 stops39h 50m

$357

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Sat 4/4

7:55 pm-5:50 pm

3 stops52h 55m

$457

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Fri 4/3

2:45 pm-4:15 pm

2 stops32h 30m

$642

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Sun 4/5

8:50 am-5:50 pm

1 stop16h 00m

$853

TrondheimChicago

TRD - ORD

TRDORD

Trondheim Vaernes

Fri 4/3

6:05 pm-5:50 pm

1 stop30h 45m

$903

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Best time to book a flight from Trondheim to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Trondheim with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Trondheim to Illinois
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Trondheim to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Trondheim to Illinois?

    If you book a flight to Illinois from Trondheim, you will be flying from Vaernes, which is the city’s only airport. Trondheim Vaernes (TRD) is located 16.4 mi from the center of Trondheim.

  • How long is the flight from Trondheim to Illinois?

    KLM, Delta, and Scandinavian Airlines can get you from Trondheim to Illinois in just under 15h 05m. Your travel time can differ by up to 12h 20m. The distance between Trondheim and Illinois is about 3923 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Trondheim to Illinois that include hotel bookings?

    Yes. In addition to deals on Trondheim to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Trondheim to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Trondheim to Illinois.

  • Can I find deals for business class flights from Trondheim to Illinois?

    Yes. Cheapflights offers flight deals from Trondheim to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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