HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo

$274+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSL
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
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

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Oslo (OS1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2025.

Round-trip from

$412
(CrystalTravel)

One-way from

$279
(Kiwi.com)
From Illinois to Oslo
Search Deals
One-way flight from Illinois to Oslo
Search Deals

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 January 21, 2025.

This CrystalTravel deal was found by Cheapflights users on 1/20. 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.
Sun 2/166:30 pmORD - OSL
1 stop10h 05mIcelandair
Fri 2/211:10 pmOSL - ORD
1 stop11h 10mIcelandair
Deal found 1/20$412
This oojo deal was found by Cheapflights users on 1/20. 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 11/37:30 pmORD - OSL
1 stop10h 25mScandinavian Airlines
Thu 11/139:00 amOSL - ORD
1 stop14h 45mScandinavian Airlines
Deal found 1/20$492
This Ticket deal was found by Cheapflights users on 1/20. 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.
Mon 3/32:05 pmORD - OSL
2 stops18h 15mAir Canada
Mon 3/109:45 amOSL - ORD
2 stops15h 52mAir Canada
Deal found 1/20$504
This Gotogate deal was found by Cheapflights users on 1/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/28:25 pmORD - OSL
1 stop14h 30mTAP AIR PORTUGAL
Thu 3/136:45 pmOSL - ORD
1 stop27h 45mTAP AIR PORTUGAL
Deal found 1/20$506
This CrystalTravel deal was found by Cheapflights users on 1/21. 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.
Mon 2/109:45 pmORD - OSL
1 stop13h 50mBritish Airways
Fri 2/2811:40 amOSL - ORD
1 stop14h 05mBritish Airways
Deal found 1/21$510
This Finnair deal was found by Cheapflights users on 1/19. 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.
Tue 3/48:25 pmORD - OSL
1 stop14h 45mFinnair
Tue 3/1111:40 amOSL - ORD
1 stop14h 05mFinnair
Deal found 1/19$512
This Mytrip deal was found by Cheapflights users on 1/20. 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.
Tue 3/45:15 amORD - OSL
2 stops23h 20mMultiple Airlines
Tue 3/111:10 pmOSL - ORD
2 stops24h 34mMultiple Airlines
Deal found 1/20$521
This CrystalTravel deal was found by Cheapflights users on 1/21. 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 1/229:25 pmORD - OSL
1 stop19h 05mLufthansa
Wed 1/296:20 amOSL - ORD
1 stop14h 05mLufthansa
Deal found 1/21$541
This Delta deal was found by Cheapflights users on 1/20. 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 3/245:25 pmORD - OSL
1 stop18h 55mDelta
Mon 3/3111:50 amOSL - ORD
1 stop33h 20mDelta
Deal found 1/20$549
This American Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 1/226:35 pmORD - OSL
1 stop21h 05mAmerican Airlines
Sun 1/267:15 amOSL - ORD
1 stop16h 45mAmerican Airlines
Deal found 1/20$550
This Delta deal was found by Cheapflights users on 1/21. 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 3/106:42 pmMDW - OSL
2 stops15h 43mDelta
Tue 3/259:20 amOSL - MDW
2 stops19h 03mDelta
Deal found 1/21$551
This KLM deal was found by Cheapflights users on 1/21. 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 2/1810:57 amMDW - OSL
2 stops14h 38mKLM
Wed 3/59:20 amOSL - MDW
2 stops15h 23mKLM
Deal found 1/21$557

Find flights from Illinois to Oslo within your budget

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 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 2/16

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Fri 2/21

1:10 pm-5:20 pm

1 stop11h 10m

$412

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 3/3

2:05 pm-3:20 pm

2 stops18h 15m

Oslo Gardermoen

Mon 3/10

9:45 am-7:37 pm

2 stops15h 52m

$504

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 2/10

9:45 pm-6:35 pm

1 stop13h 50m

Oslo Gardermoen

Fri 2/28

7:15 am-1:55 pm

1 stop13h 40m

$506

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 3/4

8:25 pm-6:10 pm

1 stop14h 45m

Oslo Gardermoen

Tue 3/11

11:40 am-7:45 pm

1 stop14h 05m

$512

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 3/2

8:25 pm-5:55 pm

1 stop14h 30m

Oslo Gardermoen

Thu 3/13

6:45 pm-4:30 pm

1 stop27h 45m

$514

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 3/4

5:15 am-11:35 am

2 stops23h 20m

Oslo Gardermoen

Tue 3/11

1:10 pm-7:44 am

2 stops24h 34m

$521

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 3/24

5:25 pm-11:55 am

1 stop12h 30m

Oslo Gardermoen

Tue 4/1

6:30 am-2:10 pm

1 stop14h 40m

$549

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Mon 3/10

6:42 pm-4:25 pm

2 stops15h 43m

Oslo Gardermoen

Tue 3/25

9:20 am-10:23 pm

2 stops19h 03m

$551

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Thu 2/13

9:25 pm-11:30 pm

1 stop19h 05m

Oslo Gardermoen

Tue 2/25

6:10 am-2:45 pm

2 stops15h 35m

$558

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sat 3/29

12:55 pm-12:35 pm

1 stop17h 40m

Oslo Gardermoen

Tue 4/1

2:35 pm-9:50 am

1 stop26h 15m

$573

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 52 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.

Travel insights for flights from Illinois to Oslo

Get recent, data-driven insights about flights from Illinois to Oslo including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from Illinois to Oslo (average of $567). Flying from Illinois to Oslo in June is currently the most expensive (average of $1,169). 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 January 21, 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 as you normally would.

Rainfall in Oslo by month

Plan your trip to Oslo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Oslo ranges from 1.6 - 3.5 inches per month. August is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Oslo when rainfall is around 1.6 in.

Temperature in Oslo by month

Plan your trip to Oslo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Oslo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

Reviews of airlines servicing Oslo

Get insights into the airlines that provide service to Oslo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oslo. Reviews last updated January 21, 2025.
To help decide which airline to fly from Illinois to Oslo, see what other customers have to say about British Airways, United Airlines and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Comfort

8.0

Crew

8.6

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 $309. TAP AIR PORTUGAL flights start at $361 while deals on Lufthansa start at $393 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 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, November is the cheapest month in which you can book a flight from Illinois to Oslo (average of $567). Flying from Illinois to Oslo in June is currently the most expensive (average of $1,169). 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.
Newark to Oslo Gardermoen flights
John F Kennedy Intl to Oslo Gardermoen flights
LaGuardia to Oslo Gardermoen flights
Seattle to Oslo Gardermoen flights
O'Hare Intl to Oslo Gardermoen flights
Dulles Intl to Oslo Gardermoen flights
Minneapolis to Oslo Gardermoen flights
Los Angeles to Oslo Gardermoen flights
Boston to Oslo Gardermoen flights
John F Kennedy Intl to Sandefjord flights
Baltimore to Oslo Gardermoen flights
Reagan-National to Oslo Gardermoen flights
Midway to Oslo Gardermoen flights
San Francisco to Oslo Gardermoen flights
Newark to Sandefjord flights
Miami to Oslo Gardermoen flights
O'Hare Intl to Sandefjord flights
Hobby to Oslo Gardermoen flights
Orlando to Oslo Gardermoen flights
Los Angeles to Sandefjord flights
Denver to Oslo Gardermoen flights
Dallas/Fort Worth to Oslo Gardermoen flights
Boston to Sandefjord flights
John F Kennedy Intl to Bergen flights
Atlanta to Oslo Gardermoen flights
Newark to Bergen flights
George Bush Intcntl to Oslo Gardermoen flights
Stewart to Oslo Gardermoen flights
Dulles Intl to Sandefjord flights
Santa Ana to Oslo Gardermoen flights
LaGuardia to Bergen flights
Detroit to Oslo Gardermoen flights
Burbank to Oslo Gardermoen flights
Philadelphia to Oslo Gardermoen flights
Sky Harbor Intl to Oslo Gardermoen flights
Dulles Intl to Bergen flights
Portland to Oslo Gardermoen flights
Salt Lake City to Oslo Gardermoen flights
Seattle to Sandefjord flights
Minneapolis to Sandefjord flights
Oakland to Oslo Gardermoen flights
Seattle to Tromsø flights
San Francisco to Sandefjord flights
Love Field to Oslo Gardermoen flights
Austin to Oslo Gardermoen flights
Seattle to Bergen flights
Miami to Sandefjord flights
O'Hare Intl to Bergen flights
San Jose to Oslo Gardermoen flights
Reagan-National to Bergen flights

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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$426Average$699FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$435Average$738FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$503Average$677FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$516Average$620FlexibilityNo cancel feeOn-time71%
FinnairCheapest$520Average$654FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$533Average$926FlexibilityNo cancel feeOn-time76%
KLMCheapest$550Average$726FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$550Average$655FlexibilityNo cancel feeOn-time69%
Air FranceCheapest$567Average$820FlexibilityNo cancel feeOn-time77%
DeltaCheapest$582Average$766FlexibilityNo cancel feeOn-timeN/A
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.