$430+ Cheap flights from Illinois to Trondheim (TRD)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TRD
Jan 17 — Jan 241
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Trondheim
Cheapest flights from Illinois to TrondheimExplore 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 December 18, 2025.
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 December 18, 2025.
This KLM deal was found by Cheapflights users on 12/16. 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.
Wed 12/314:25 pmORD - TRD
1 stop17h 10mKLM
Fri 3/66:15 amTRD - ORD
1 stop15h 05mKLM
Deal found 12/16![KLM logo]()
$516
This Delta deal was found by Cheapflights users on 12/16. 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.
Wed 12/314:25 pmORD - TRD
1 stop17h 10mDelta
Fri 3/66:15 amTRD - ORD
2 stops22h 26mDelta
Deal found 12/16![Delta logo]()
$526
This oojo deal was found by Cheapflights users on 12/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:20 pmORD - TRD
2 stops19h 20mScandinavian Airlines
Fri 3/62:50 pmTRD - ORD
3 stops32h 55mScandinavian Airlines
Deal found 12/16![Scandinavian Airlines logo]()
$654
This SmartFares deal was found by Cheapflights users on 12/16. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:35 pmORD - TRD
2 stops27h 30mMultiple Airlines
Fri 3/66:25 amTRD - ORD
2 stops20h 40mMultiple Airlines
Deal found 12/16![Multiple Airlines logo]()
$810
Find flight deals from Illinois to Trondheim
Keep the following information in mind while searching for Illinois to Trondheim flight deals. Data was last updated December 18, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $430 (oojo) |
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 December 18, 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
Sat 1/31
7:20 pm-3:45 pm
2 stops13h 25m
Trondheim Vaernes
Sat 2/7
8:20 am-4:45 pm
2 stops15h 25m
$430
ChicagoTrondheim
ORD - TRD
ORDTRD
Chicago O'Hare Intl
Mon 2/23
7:20 pm-7:05 pm
1 stop16h 45m
Trondheim Vaernes
Thu 2/26
7:45 pm-4:45 pm
1 stop28h 00m
$464
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
No data available for this route at this time. Please check back soon.
Related info for your journey
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Alternative routes for Illinois to Trondheim
See prices for flight routes from nearby airports that may be better suited for you.
Top airline flying from Illinois to Trondheim
Discover the top airline 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 December 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$477 | Average$850 | FlexibilityNo cancel fee | On-time77% |