$509+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TRD
Mar 6 — Mar 131
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
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Best
Last-minute
One-way
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 February 4, 2026.
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 February 4, 2026.
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:20 pm
ORD
- TRD
1 stop12h 10m
Scandinavian Airlines
Sun 3/87:45 pm
TRD
- ORD
1 stop28h 00m
Scandinavian Airlines
Deal found 2/3![Scandinavian Airlines logo]()
$509
This KLM deal was found by Cheapflights users on 2/1. 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.
Tue 3/32:05 pm
ORD
- TRD
2 stops19h 30m
KLM
Tue 3/105:10 pm
TRD
- ORD
1 stop28h 10m
KLM
Deal found 2/1![KLM logo]()
$527
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:05 am
ORD
- TRD
2 stops24h 25m
Scandinavian Airlines
Tue 3/107:35 pm
TRD
- ORD
2 stops28h 10m
Scandinavian Airlines
Deal found 2/2![Scandinavian Airlines logo]()
$534
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/310:30 pm
ORD
- TRD
2 stops26h 50m
Finnair
Sun 5/108:50 am
TRD
- ORD
1 stop16h 00m
Finnair
Deal found 2/2![Finnair logo]()
$558
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/39:30 pm
ORD
- TRD
1 stop27h 50m
Multiple Airlines
Sun 5/108:50 am
TRD
- ORD
1 stop16h 00m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$588
Best flights from Illinois to TrondheimDiscover carefully curated flight deals from Illinois to Trondheim that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
Discover carefully curated flight deals from Illinois to Trondheim that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 4, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 2/1. 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.
Wed 3/47:20 pm
ORD
- TRD
1 stop16h 45m
Scandinavian Airlines
Sun 3/87:45 pm
TRD
- ORD
1 stop28h 00m
Scandinavian Airlines
Deal found 2/1![Scandinavian Airlines logo]()
$509
This KLM deal was found by Cheapflights users on 2/1. 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.
Tue 3/32:05 pm
ORD
- TRD
2 stops19h 30m
KLM
Tue 3/105:10 pm
TRD
- ORD
1 stop28h 10m
KLM
Deal found 2/1![KLM logo]()
$527
This FlightHub deal was found by Cheapflights users on 2/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:05 am
ORD
- TRD
2 stops19h 35m
Scandinavian Airlines
Tue 3/106:35 pm
TRD
- ORD
2 stops29h 10m
Scandinavian Airlines
Deal found 2/1![Scandinavian Airlines logo]()
$534
Last-minute flights from Illinois to TrondheimDiscover last-minute flight deals from Illinois to Trondheim. Data last updated February 4, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Trondheim. Data last updated February 4, 2026 and is based on user searches.
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/183:45 pm
ORD
- TRD
2 stops13h 45m
Multiple Airlines
Sun 2/225:30 am
TRD
- ORD
2 stops15h 40m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$5,892
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/32:25 pm
ORD
- TRD
2 stops19h 10m
KLM
Tue 3/105:10 pm
TRD
- ORD
1 stop28h 10m
KLM
Deal found 2/2![KLM logo]()
$527
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:05 am
ORD
- TRD
2 stops24h 25m
Scandinavian Airlines
Tue 3/107:35 pm
TRD
- ORD
2 stops28h 10m
Scandinavian Airlines
Deal found 2/2![Scandinavian Airlines logo]()
$534
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:25 pm
ORD
- TRD
2 stops14h 05m
Multiple Airlines
Tue 3/105:30 am
TRD
- ORD
2 stops15h 40m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$3,927
This Scandinavian Airlines 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/47:20 pm
ORD
- TRD
1 stop12h 10m
Scandinavian Airlines
Sun 3/87:45 pm
TRD
- ORD
1 stop28h 00m
Scandinavian Airlines
Deal found 2/3![Scandinavian Airlines logo]()
$509
One-way flights from Illinois to TrondheimSearch for one-way flight options from Illinois to Trondheim. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
Search for one-way flight options from Illinois to Trondheim. Find affordable one-way fares based on user searches. Data last updated February 4, 2026.
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/285:37 pm
ORD
- TRD
2 stops15h 58m
KLM
Deal found 2/3![KLM logo]()
$523
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/284:20 pm
ORD
- TRD
3 stops21h 45m
Multiple Airlines
Deal found 2/2![Multiple Airlines logo]()
$1,158
This TAP AIR PORTUGAL 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2810:00 am
ORD
- TRD
3 stops21h 10m
TAP AIR PORTUGAL
Deal found 2/3![TAP AIR PORTUGAL logo]()
$1,194
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:20 pm
ORD
- TRD
1 stop12h 10m
Scandinavian Airlines
Deal found 2/3![Scandinavian Airlines logo]()
$1,406
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 February 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $509 (Scandinavian Airlines) |
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 February 4, 2026.
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
Wed 3/4
7:20 pm-7:05 pm
1 stop16h 45m
Trondheim Vaernes
Sun 3/8
7:45 pm-5:45 pm
1 stop28h 00m
$509
ChicagoTrondheim
ORD - TRD
ORDTRD
Chicago O'Hare Intl
Tue 3/3
2:05 pm-4:35 pm
2 stops19h 30m
Trondheim Vaernes
Tue 3/10
5:10 pm-3:20 pm
1 stop28h 10m
$527
ChicagoTrondheim
ORD - TRD
ORDTRD
Chicago O'Hare Intl
Tue 3/3
7:05 am-9:40 am
2 stops19h 35m
Trondheim Vaernes
Tue 3/10
6:35 pm-5:45 pm
2 stops29h 10m
$534
ChicagoTrondheim
ORD - TRD
ORDTRD
Chicago O'Hare Intl
Sat 2/28
5:37 pm-4:35 pm
2 stops15h 58m
$523
ChicagoTrondheim
ORD - TRD
ORDTRD
Chicago O'Hare Intl
Sat 2/28
4:20 pm-9:05 pm
3 stops21h 45m
$1,158
ChicagoTrondheim
ORD - TRD
ORDTRD
Chicago O'Hare Intl
Sat 2/28
10:00 am-2:10 pm
3 stops21h 10m
$1,194
ChicagoTrondheim
ORD - TRD
ORDTRD
Chicago O'Hare Intl
Sat 2/28
7:20 pm-2:30 pm
1 stop12h 10m
$1,406
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.
ORD-TRD
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
USIL-TRD
ORD-TRD
No data available for this route at this time. Please check back soon.
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Alternative routes for Illinois to Trondheim
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Illinois and Trondheim flights
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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 February 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$458 | Average$850 | FlexibilityNo cancel fee | On-time77% |