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$420+ Cheap flights from Illinois to Trondheim (TRD)

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TRD
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
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Cheap flight deals from Illinois to Trondheim

Keep the following information in mind while searching for Illinois to Trondheim flight deals. Data was last updated April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$730
(KLM)

One-way from

$420
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$542
Provider with most accurate pricing for Chicago (CHI)-Trondheim Vaernes flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Trondheim Vaernes flights.
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From Illinois to Trondheim Vaernes
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One-way flight from Illinois to Trondheim Vaernes
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Highest demand for flights based on searches. 27% potential increase in price ($280 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($65 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Illinois to Trondheim

Cheapest flights from Illinois to Trondheim
Explore the most affordable flight options available from Illinois to Trondheim. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

This KLM deal was found by Cheapflights users on 4/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/154:20 pmORD - TRD
1 stop23h 30mKLM
Thu 5/225:05 pmTRD - ORD
1 stop28h 05mKLM
Deal found 4/2$730
This Trip.com deal was found by Cheapflights users on 3/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/167:15 pmORD - TRD
1 stop12h 05mScandinavian Airlines
Fri 5/237:45 pmTRD - ORD
1 stop27h 25mScandinavian Airlines
Deal found 3/31$731
This Delta deal was found by Cheapflights users on 3/31. 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 5/164:20 pmORD - TRD
1 stop17h 10mDelta
Fri 5/236:00 amTRD - ORD
2 stops22h 21mDelta
Deal found 3/31$757
This Gotogate deal was found by Cheapflights users on 3/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1610:15 pmORD - TRD
2 stops32h 05mMultiple Airlines
Fri 5/236:30 amTRD - ORD
2 stops18h 45mMultiple Airlines
Deal found 3/31$765

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Trondheim 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 April 2, 2025.
Use the filters below to find and compare flights from Illinois to Trondheim that are best for you.

Fly from

Illinois

Fly to

Trondheim

Route

Depart

Return

Price

ChicagoTrondheim

ORD - TRD

ORDTRD

Chicago O'Hare Intl

Thu 5/15

4:20 pm-10:50 pm

1 stop23h 30m

Trondheim Vaernes

Thu 5/22

5:05 pm-2:10 pm

1 stop28h 05m

$730

ChicagoTrondheim

ORD - TRD

ORDTRD

Chicago O'Hare Intl

Fri 5/16

7:15 pm-2:20 pm

1 stop12h 05m

Trondheim Vaernes

Fri 5/23

7:45 pm-4:10 pm

1 stop27h 25m

$731

ChicagoTrondheim

ORD - TRD

ORDTRD

Chicago O'Hare Intl

Fri 5/16

4:20 pm-4:30 pm

1 stop17h 10m

Trondheim Vaernes

Fri 5/23

6:00 am-8:21 pm

2 stops21h 21m

$757

ChicagoTrondheim

ORD - TRD

ORDTRD

Chicago O'Hare Intl

Fri 5/16

10:15 pm-1:20 pm

2 stops32h 05m

Trondheim Vaernes

Fri 5/23

6:30 am-6:15 pm

2 stops18h 45m

$765

ChicagoTrondheim

ORD - TRD

ORDTRD

Chicago O'Hare Intl

Sat 5/17

6:14 pm-4:30 pm

2 stops15h 16m

$520

ChicagoTrondheim

ORD - TRD

ORDTRD

Chicago O'Hare Intl

Sat 5/17

9:40 pm-5:05 pm

1 stop12h 25m

$608

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Best time to book a flight from Illinois to Trondheim

Have a flexible travel schedule? Discover the best time to fly to Trondheim from Illinois 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 Illinois to Trondheim

Rainfall in Trondheim by month

Plan your trip to Trondheim by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Trondheim ranges from 1.8 - 4.3 inches per month. September is typically the wettest month, when rainfall can reach 4.3 in. April is typically the driest time to visit Trondheim when rainfall is around 1.8 in.

Temperature in Trondheim by month

Plan your trip to Trondheim by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Trondheim, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 55.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

Reviews of airlines servicing Trondheim

Get insights into the airlines that provide service to Trondheim. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Trondheim. Reviews last updated April 2, 2025.
Delta
8.0
Very good
7,898 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very good
7,898 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,328 reviews
Delta
8.0
Very good
7,898 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Trondheim. 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 into for flights to Trondheim from Illinois?

    Trondheim Vaernes (TRD), located 16.4 mi from the city center, is the airport you fly into when you book flights from Illinois to Trondheim.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Trondheim 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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Top 2 airlines flying from Illinois to Trondheim

Discover the top 2 airlines that operate flights from Illinois to Trondheim. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$501Average$766FlexibilityNo cancel feeOn-time77%
KLMCheapest$527Average$655FlexibilityNo cancel feeOn-time75%

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