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$230+ Cheap flights from Illinois to Oslo

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 12/14. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSL
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap flight deals from Illinois to Oslo

Keep the following information in mind while searching for Illinois to Oslo flight deals. Data was last updated November 3, 2025.

Round-trip from

$385
(Justfly.com)

One-way from

$230
(SmartFares)

Popular in

June

Cheapest in

November

Average price

$497
From Illinois to Oslo
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One-way flight from Illinois to Oslo
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Highest demand for flights based on searches. 16% potential increase in price ($120 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Illinois to Oslo

Cheapest flights from Illinois to Oslo
Explore the most affordable flight options available from Illinois to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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 12/37:00 amORD - OSL
2 stops19h 20mScandinavian Airlines
Sun 12/145:55 amOSL - ORD
1 stop17h 50mScandinavian Airlines
Deal found 11/2$385
This oojo deal was found by Cheapflights users on 11/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:30 pmORD - OSL
1 stop10h 05mIcelandair
Wed 12/101:10 pmOSL - ORD
1 stop11h 10mIcelandair
Deal found 11/1$391
This Mytrip deal was found by Cheapflights users on 11/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/177:20 pmORD - OSL
1 stop15h 55mScandinavian Airlines
Wed 12/31:30 pmOSL - ORD
1 stop34h 15mScandinavian Airlines
Deal found 11/2$392
This Mytrip deal was found by Cheapflights users on 11/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/177:20 pmORD - TRF
1 stop11h 45mScandinavian Airlines
Wed 12/32:35 pmTRF - ORD
1 stop33h 10mScandinavian Airlines
Deal found 11/1$392
This KAYAK deal was found by Cheapflights users on 11/2. 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.
Wed 12/37:00 amORD - TRF
2 stops24h 05mScandinavian Airlines
Sun 12/142:35 pmTRF - ORD
1 stop33h 10mScandinavian Airlines
Deal found 11/2$411
This CheapOair deal was found by Cheapflights users on 11/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:00 amORD - OSL
2 stops24h 15mScandinavian Airlines
Wed 12/101:30 pmOSL - ORD
1 stop34h 15mScandinavian Airlines
Deal found 11/1$412
This KAYAK deal was found by Cheapflights users on 11/2. 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 12/66:30 pmORD - OSL
1 stop10h 05mIcelandair
Sun 12/141:05 pmOSL - ORD
1 stop11h 15mIcelandair
Deal found 11/2$418
This FlightHub deal was found by Cheapflights users on 11/2. 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.
Wed 12/36:30 pmORD - OSL
1 stop10h 05mIcelandair
Mon 12/151:10 pmOSL - ORD
1 stop11h 10mIcelandair
Deal found 11/2$419
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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.
Mon 12/17:20 pmORD - OSL
1 stop16h 55mScandinavian Airlines
Mon 12/158:00 amOSL - ORD
1 stop15h 45mScandinavian Airlines
Deal found 11/2$433
This FlightHub deal was found by Cheapflights users on 11/2. 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.
Wed 12/37:20 pmORD - OSL
1 stop10h 50mScandinavian Airlines
Sat 12/138:00 amOSL - ORD
1 stop15h 45mScandinavian Airlines
Deal found 11/2$440
This KAYAK deal was found by Cheapflights users on 11/2. 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.
Tue 12/26:30 pmORD - OSL
1 stop10h 05mIcelandair
Sun 12/141:05 pmOSL - ORD
1 stop11h 15mIcelandair
Deal found 11/2$441
This KAYAK deal was found by Cheapflights users on 11/2. 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.
Thu 12/47:10 amORD - TRF
2 stops23h 55mScandinavian Airlines
Sun 12/142:35 pmTRF - ORD
1 stop33h 10mScandinavian Airlines
Deal found 11/2$441

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Oslo 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 November 3, 2025.
Use the filters below to find and compare flights from Illinois to Oslo that are best for you.

Fly from

Illinois

Fly to

Oslo

Route

Depart

Return

Price

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Wed 12/3

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Wed 12/10

1:10 pm-5:20 pm

1 stop11h 10m

$391

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Mon 11/17

7:20 pm-2:05 pm

1 stop11h 45m

Oslo Sandefjord

Wed 12/3

2:35 pm-4:45 pm

1 stop33h 10m

$392

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 1/16

7:20 pm-1:10 pm

1 stop10h 50m

Oslo Gardermoen

Mon 1/19

5:55 am-4:45 pm

1 stop17h 50m

$396

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Wed 1/14

10:24 am-11:15 am

2 stops17h 51m

Oslo Gardermoen

Wed 1/21

5:55 am-4:45 pm

1 stop17h 50m

$401

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Sat 12/6

7:10 am-2:05 pm

2 stops23h 55m

Oslo Sandefjord

Sun 12/14

2:35 pm-4:45 pm

1 stop33h 10m

$411

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 1/12

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Fri 1/23

1:10 pm-5:20 pm

1 stop11h 10m

$419

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Wed 1/14

7:20 pm-2:05 pm

1 stop11h 45m

Oslo Sandefjord

Sun 1/18

2:35 pm-4:45 pm

1 stop33h 10m

$422

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Wed 1/14

7:20 pm-2:05 pm

1 stop11h 45m

Oslo Sandefjord

Thu 1/22

2:35 pm-4:45 pm

1 stop33h 10m

$422

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Thu 1/15

7:20 pm-2:05 pm

1 stop11h 45m

Oslo Sandefjord

Thu 1/22

2:35 pm-4:45 pm

1 stop33h 10m

$422

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Sat 1/17

7:20 pm-2:05 pm

1 stop11h 45m

Oslo Sandefjord

Thu 1/22

2:35 pm-4:45 pm

1 stop33h 10m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 52 results
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Best time to book a flight from Illinois to Oslo

Have a flexible travel schedule? Discover the best time to fly to Oslo 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 Oslo

What is the cheapest month to book a flight from Illinois to Oslo?

Currently, February is the cheapest month in which you can book a flight from Illinois to Oslo (average of $383). Flying from Illinois to Oslo in June is currently the most expensive (average of $621). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to OSL?

Find hourly flight availability from Illinois to Oslo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

When flying from Illinois to Oslo, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 14% versus a flight in the afternoon.

Related info for your journey

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

  • How long is the flight from Illinois to Oslo?

    Departing from Illinois to Oslo will take you 10h 05m. The distance from Illinois to Oslo is about 4039 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Illinois to Oslo?

    When deciding which route to take from Illinois to Oslo consider Chicago O'Hare Intl - Oslo Gardermoen, Chicago Midway - Oslo Gardermoen or Chicago O'Hare Intl - Oslo Sandefjord as they are the most popular.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Illinois to Oslo?

    Currently, February is the cheapest month in which you can book a flight from Illinois to Oslo (average of $383). Flying from Illinois to Oslo in June is currently the most expensive (average of $621). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Illinois to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Oslo

Discover the top 10 airlines that operate flights from Illinois to Oslo. 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$390Average$796FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$419Average$611FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$494Average$645FlexibilityNo cancel feeOn-time76%
SWISSCheapest$513Average$634FlexibilityNo cancel feeOn-time79%
American AirlinesCheapest$516Average$553FlexibilityNo cancel feeOn-time71%
FinnairCheapest$521Average$674FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$530Average$678FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$532Average$645FlexibilityNo cancel feeOn-time69%
KLMCheapest$545Average$741FlexibilityNo cancel feeOn-time75%
DeltaCheapest$562Average$775FlexibilityNo cancel feeOn-timeN/A

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