HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo

$208+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSL
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to Oslo with Cheapflights

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 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 January 29, 2026.

This Ticket deal was found by Cheapflights users on 1/27. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/146:30 pm
ORD
-
OSL
1 stop19h 05m
Icelandair
Sun 3/19:30 pm
OSL
-
ORD
1 stop26h 50m
Icelandair
Deal found 1/27$366
This CrystalTravel deal was found by Cheapflights users on 1/28. 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.
Wed 3/46:30 pm
ORD
-
OSL
1 stop10h 05m
Icelandair
Wed 3/111:10 pm
OSL
-
ORD
1 stop11h 10m
Icelandair
Deal found 1/28$391
This oojo deal was found by Cheapflights users on 1/27. 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.
Fri 4/176:00 pm
ORD
-
OSL
1 stop35h 00m
TAP AIR PORTUGAL
Fri 4/246:50 pm
OSL
-
ORD
1 stop28h 25m
TAP AIR PORTUGAL
Deal found 1/27$398
This oojo deal was found by Cheapflights users on 1/27. 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 3/46:30 pm
ORD
-
OSL
1 stop10h 05m
Icelandair
Sun 3/89:30 pm
OSL
-
ORD
1 stop26h 50m
Icelandair
Deal found 1/27$399
This oojo deal was found by Cheapflights users on 1/26. 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.
Sat 4/256:15 pm
ORD
-
OSL
1 stop34h 45m
TAP AIR PORTUGAL
Sat 5/21:00 pm
OSL
-
ORD
1 stop34h 00m
TAP AIR PORTUGAL
Deal found 1/26$404
This oojo deal was found by Cheapflights users on 1/27. 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.
Mon 3/98:20 pm
ORD
-
OSL
1 stop11h 55m
Scandinavian Airlines
Fri 3/138:00 am
OSL
-
ORD
1 stop15h 55m
Scandinavian Airlines
Deal found 1/27$435
This oojo deal was found by Cheapflights users on 1/28. 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.
Mon 3/27:20 pm
ORD
-
OSL
1 stop13h 00m
Scandinavian Airlines
Mon 3/98:00 am
OSL
-
ORD
1 stop15h 45m
Scandinavian Airlines
Deal found 1/28$437
This FlightHub deal was found by Cheapflights users on 1/27. 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 4/227:15 pm
ORD
-
OSL
1 stop29h 55m
Scandinavian Airlines
Tue 4/285:15 pm
OSL
-
ORD
1 stop29h 55m
Scandinavian Airlines
Deal found 1/27$438
This CrystalTravel deal was found by Cheapflights users on 1/28. 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 4/97:25 pm
ORD
-
OSL
1 stop10h 10m
Icelandair
Sun 4/194:30 pm
OSL
-
ORD
1 stop11h 55m
Icelandair
Deal found 1/28$441
This CrystalTravel deal was found by Cheapflights users on 1/26. 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.
Wed 4/297:25 pm
ORD
-
OSL
1 stop13h 00m
Icelandair
Fri 5/81:50 pm
OSL
-
ORD
1 stop14h 35m
Icelandair
Deal found 1/26$446
This Mytrip deal was found by Cheapflights users on 1/28. 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 4/137:25 pm
ORD
-
OSL
1 stop13h 00m
Icelandair
Mon 4/201:50 pm
OSL
-
ORD
1 stop11h 25m
Icelandair
Deal found 1/28$449
This Delta deal was found by Cheapflights users on 1/26. 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 4/291:23 pm
MDW
-
OSL
2 stops17h 22m
Delta
Fri 5/86:30 am
OSL
-
MDW
2 stops18h 35m
Delta
Deal found 1/26$519

Find flight deals from Illinois to Oslo

Keep the following information in mind while searching for Illinois to Oslo flight deals. Data was last updated January 29, 2026.

Round-trip from

$366
(Ticket)

One-way from

$208
(oojo)

Popular in

June

Cheapest in

November

Average price

$504
From Illinois to Oslo
Search Deals
One-way flight from Illinois to Oslo
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
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

Mon 5/4

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Mon 5/11

1:50 pm-6:15 pm

1 stop11h 25m

$467

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 5/4

3:35 pm-10:55 am

1 stop12h 20m

Oslo Gardermoen

Mon 5/11

7:10 am-4:59 pm

2 stops16h 49m

$502

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 4/17

1:36 pm-1:45 pm

2 stops17h 09m

Oslo Gardermoen

Fri 4/24

9:20 am-2:15 pm

1 stop11h 55m

$511

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Wed 4/22

7:59 pm-6:45 pm

2 stops15h 46m

Oslo Gardermoen

Tue 4/28

9:20 am-2:15 pm

1 stop11h 55m

$511

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sat 4/25

7:05 pm-2:25 pm

1 stop12h 20m

Oslo Gardermoen

Sat 5/2

8:50 pm-1:50 pm

2 stops24h 00m

$517

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 4/3

4:20 pm-11:05 am

1 stop11h 45m

Oslo Gardermoen

Thu 4/9

6:30 am-2:15 pm

1 stop14h 45m

$519

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sat 3/28

5:25 pm-1:25 pm

1 stop14h 00m

Oslo Gardermoen

Mon 4/6

5:20 pm-2:15 pm

1 stop27h 55m

$520

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 3/27

6:40 pm-10:30 pm

2 stops45h 50m

Oslo Gardermoen

Sat 4/4

8:15 am-7:19 am

2 stops30h 04m

$520

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Mon 4/13

1:23 pm-1:45 pm

2 stops17h 22m

Oslo Gardermoen

Mon 4/20

6:30 am-5:58 pm

2 stops18h 28m

$521

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Mon 4/27

1:23 pm-1:45 pm

2 stops17h 22m

Oslo Gardermoen

Mon 5/4

6:30 am-5:58 pm

2 stops18h 28m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 58 results
1
2
3
...
6

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, December is the cheapest month in which you can book a flight from Illinois to Oslo (average of $378). Flying from Illinois to Oslo in June is currently the most expensive (average of $635). 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.

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

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 12h 20m. 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 cheapest airlines to fly from Illinois to Oslo one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $213. Scandinavian Airlines flights start at $261 while deals on SWISS start at $361 one-way.

  • 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 O'Hare Intl - Oslo Sandefjord or Chicago Midway - Oslo Gardermoen 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, December is the cheapest month in which you can book a flight from Illinois to Oslo (average of $378). Flying from Illinois to Oslo in June is currently the most expensive (average of $635). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Oslo Gardermoen flights
Newark to Oslo Gardermoen flights
LaGuardia to Oslo Gardermoen flights
Dulles Intl to Oslo Gardermoen flights
O'Hare Intl to Oslo Gardermoen flights
Los Angeles to Oslo Gardermoen flights
San Francisco to Oslo Gardermoen flights
Seattle to Oslo Gardermoen flights
Dallas/Fort Worth to Oslo Gardermoen flights
Minneapolis to Oslo Gardermoen flights
John F Kennedy Intl to Sandefjord flights
Baltimore to Oslo Gardermoen flights
Boston to Oslo Gardermoen flights
Reagan-National to Oslo Gardermoen flights
Newark to Sandefjord flights
Atlanta to Oslo Gardermoen flights
Dulles Intl to Sandefjord flights
Denver to Oslo Gardermoen flights
O'Hare Intl to Sandefjord flights
Midway to Oslo Gardermoen flights
Miami to Oslo Gardermoen flights
Los Angeles to Sandefjord flights
Love Field to Oslo Gardermoen flights
Ontario to Oslo Gardermoen flights
Santa Ana to Oslo Gardermoen flights
San Jose to Oslo Gardermoen flights
Orlando to Oslo Gardermoen flights
Hobby to Oslo Gardermoen flights
San Francisco to Sandefjord flights
Detroit to Oslo Gardermoen flights
Burbank to Oslo Gardermoen flights
Boston to Sandefjord flights
Raleigh to Oslo Gardermoen flights
George Bush Intcntl to Oslo Gardermoen flights
Charlotte to Oslo Gardermoen flights
Portland to Oslo Gardermoen flights
Salt Lake City to Oslo Gardermoen flights
John F Kennedy Intl to Bergen flights
Dulles Intl to Bergen flights
John F Kennedy Intl to Tromsø flights
Boston to Bergen flights
Newark to Bergen flights
Oakland to Oslo Gardermoen flights
Madison to Oslo Gardermoen flights
Cincinnati to Oslo Gardermoen flights
Nashville to Oslo Gardermoen flights
Tampa to Oslo Gardermoen flights
Seattle to Sandefjord flights
Newark to Tromsø flights
Las Vegas to Oslo Gardermoen flights

Top 9 airlines flying from Illinois to Oslo

Discover the top 9 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$388Average$789FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$397Average$603FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$505Average$617FlexibilityNo cancel feeOn-time71%
DeltaCheapest$513Average$772FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$513Average$634FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$515Average$614FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$517Average$690FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$532Average$641FlexibilityNo cancel feeOn-time69%
KLMCheapest$544Average$770FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.