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Oslo Gardermoen

$299+ Cheap flights from Illinois to Oslo Gardermoen (OSL)

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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSL
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Illinois to Oslo Gardermoen

Keep the following information in mind while searching for Illinois to Oslo Gardermoen flight deals. Data was last updated September 17, 2025.

Round-trip from

$380
(Sembo)

One-way from

$299
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$579
From Illinois to Oslo Gardermoen
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One-way flight from Illinois to Oslo Gardermoen
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Highest demand for flights based on searches. 16% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Illinois to Oslo Gardermoen

Cheapest flights from Illinois to Oslo Gardermoen
Explore the most affordable flight options available from Illinois to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Sembo deal was found by Cheapflights users on 9/15. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/187:25 pmORD - OSL
1 stop10h 10mIcelandair
Mon 11/31:10 pmOSL - ORD
1 stop11h 10mIcelandair
Deal found 9/15$380
This CrystalTravel deal was found by Cheapflights users on 9/15. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:30 pmORD - OSL
1 stop10h 05mIcelandair
Thu 11/131:10 pmOSL - ORD
1 stop11h 10mIcelandair
Deal found 9/15$382
This FlightHub deal was found by Cheapflights users on 9/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/210:31 amORD - OSL
2 stops15h 49mScandinavian Airlines
Mon 12/89:00 amOSL - ORD
1 stop14h 45mScandinavian Airlines
Deal found 9/16$386
This Flightnetwork deal was found by Cheapflights users on 9/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/167:25 pmORD - OSL
1 stop10h 10mIcelandair
Sat 11/11:10 pmOSL - ORD
1 stop11h 10mIcelandair
Deal found 9/16$388
This oojo deal was found by Cheapflights users on 9/15. 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.
Thu 11/66:30 pmORD - OSL
1 stop10h 05mIcelandair
Wed 11/121:10 pmOSL - ORD
1 stop11h 10mIcelandair
Deal found 9/15$394
This oojo deal was found by Cheapflights users on 9/16. 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 12/36:30 pmORD - OSL
1 stop10h 05mIcelandair
Sun 12/71:05 pmOSL - ORD
1 stop11h 15mIcelandair
Deal found 9/16$402
This oojo deal was found by Cheapflights users on 9/16. 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.
Sun 10/127:25 pmORD - OSL
1 stop10h 10mIcelandair
Wed 10/224:30 pmOSL - ORD
1 stop32h 45mIcelandair
Deal found 9/16$420
This oojo deal was found by Cheapflights users on 9/15. 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.
Sun 10/127:25 pmORD - OSL
1 stop10h 10mIcelandair
Sun 10/1910:30 pmOSL - ORD
1 stop26h 45mIcelandair
Deal found 9/15$422
This oojo deal was found by Cheapflights users on 9/14. 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 10/1510:15 pmORD - OSL
1 stop31h 20mIcelandair
Wed 10/224:30 pmOSL - ORD
1 stop32h 45mIcelandair
Deal found 9/14$423
This Delta deal was found by Cheapflights users on 9/14. 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 12/36:40 pmMDW - OSL
2 stops36h 10mDelta
Sun 12/71:05 pmOSL - MDW
2 stops50h 49mDelta
Deal found 9/14$541
This Delta deal was found by Cheapflights users on 9/16. 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.
Fri 11/141:14 pmMDW - OSL
2 stops17h 36mDelta
Wed 11/196:25 amOSL - MDW
2 stops18h 53mDelta
Deal found 9/16$545
This Delta deal was found by Cheapflights users on 9/14. 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.
Mon 12/151:50 pmMDW - OSL
2 stops17h 00mDelta
Tue 12/237:50 amOSL - MDW
2 stops16h 29mDelta
Deal found 9/14$571

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Oslo Gardermoen 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 September 17, 2025.
Use the filters below to find and compare flights from Illinois to Oslo Gardermoen Airport that are best for you.

Fly from

Illinois

Fly to

Oslo Gardermoen

Route

Depart

Return

Price

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 11/30

7:20 pm-4:40 pm

1 stop14h 20m

Oslo Gardermoen

Thu 12/4

8:00 am-4:45 pm

1 stop15h 45m

$433

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 11/14

7:20 pm-2:15 pm

1 stop11h 55m

Oslo Gardermoen

Wed 11/19

10:00 am-4:45 pm

1 stop13h 45m

$470

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sat 10/25

10:25 am-11:15 am

2 stops17h 50m

Oslo Gardermoen

Mon 11/3

8:00 am-4:45 pm

1 stop15h 45m

$491

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sat 10/18

10:40 am-12:15 pm

2 stops18h 35m

Oslo Gardermoen

Mon 11/3

1:00 pm-4:20 pm

1 stop34h 20m

$493

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 11/11

7:15 am-12:10 pm

2 stops21h 55m

Oslo Gardermoen

Tue 11/25

6:45 am-8:00 pm

2 stops20h 15m

$494

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sat 10/18

10:40 am-12:15 pm

2 stops18h 35m

Oslo Gardermoen

Mon 11/3

6:15 am-2:55 pm

2 stops15h 40m

$499

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Wed 12/3

9:50 pm-5:40 pm

1 stop12h 50m

Oslo Gardermoen

Sun 12/7

6:05 am-11:18 am

2 stops36h 13m

$506

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Thu 11/6

7:05 am-9:20 am

2 stops19h 15m

Oslo Gardermoen

Wed 11/12

12:10 pm-4:45 pm

1 stop11h 35m

$511

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Thu 12/4

10:35 pm-5:50 pm

1 stop12h 15m

Oslo Gardermoen

Thu 12/18

11:50 am-6:25 pm

1 stop13h 35m

$513

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Wed 12/3

6:40 pm-1:50 pm

2 stops36h 10m

Oslo Gardermoen

Sun 12/7

1:05 pm-8:54 am

2 stops50h 49m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 36 results
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Best time to book a flight from Illinois to Oslo Gardermoen

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

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Oslo Gardermoen Airport (average of $567). Flying from Illinois to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,006). 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 Gardermoen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Oslo Gardermoen Airport as you normally would.

How much does it cost to fly round-trip from Illinois to Oslo Gardermoen Airport?

Related info for your journey

Find useful and relevant information for your journey from Illinois to Oslo Gardermoen. 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 Gardermoen Airport?

    Departing from Illinois to Oslo Gardermoen Airport will take you 14h 20m. The distance from Illinois to Oslo Gardermoen Airport is about 4039 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Oslo Gardermoen 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 Gardermoen Airport?

    Currently, November is the cheapest month in which you can book a flight from Illinois to Oslo Gardermoen Airport (average of $567). Flying from Illinois to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,006). 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

Traveling to a place near Oslo Gardermoen Airport?

Book flights to Oslo Gardermoen Airport if you plan to visit one of these locations
Gardermoen

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Alternative routes for Illinois to Oslo Gardermoen

See prices for flight routes from nearby airports that may be better suited for you.
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Boston to Sandefjord flights
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Atlanta to Sandefjord flights
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Oakland to Oslo Gardermoen flights
Fort Lauderdale to Oslo Gardermoen flights
Raleigh to Oslo Gardermoen flights
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San Francisco to Sandefjord flights
Cleveland to Oslo Gardermoen flights
Portland to Oslo Gardermoen flights

Top 10 airlines flying from Illinois to Oslo Gardermoen

Discover the top 10 airlines that operate flights from Illinois to Oslo Gardermoen. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$409Average$606FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$432Average$799FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$494Average$645FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$530Average$683FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$532Average$570FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$532Average$645FlexibilityNo cancel feeOn-time69%
KLMCheapest$550Average$751FlexibilityNo cancel feeOn-time75%
FinnairCheapest$555Average$677FlexibilityNo cancel feeOn-time76%
DeltaCheapest$562Average$802FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$605Average$634FlexibilityNo cancel feeOn-time79%

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