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Oslo

$218+ 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 7/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$559
(United Airlines)

One-way from

$218
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$816
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. 15% potential increase in price ($110 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 June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:00 pmORD - OSL
1 stop21h 10mUnited Airlines
Sat 10/256:35 amOSL - ORD
2 stops15h 20mUnited Airlines
Deal found 6/11$559
This American Airlines deal was found by Cheapflights users on 6/12. 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 9/31:59 pmORD - OSL
2 stops13h 41mAmerican Airlines
Sat 9/138:20 amOSL - ORD
1 stop15h 40mAmerican Airlines
Deal found 6/12$560
This Mytrip deal was found by Cheapflights users on 6/11. 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 8/47:15 pmORD - TRF
2 stops19h 10mMultiple Airlines
Wed 8/204:25 pmTRF - ORD
2 stops30h 45mMultiple Airlines
Deal found 6/11$560
This oojo deal was found by Cheapflights users on 6/12. 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.
Tue 7/157:25 pmORD - OSL
1 stop13h 00mIcelandair
Thu 7/244:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 6/12$561
This CheapOair deal was found by Cheapflights users on 6/11. 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.
Thu 9/112:00 pmORD - OSL
2 stops18h 40mAir Canada
Mon 9/156:35 amOSL - ORD
2 stops20h 36mAir Canada
Deal found 6/11$569
This Delta deal was found by Cheapflights users on 6/9. 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 10/177:55 pmORD - OSL
2 stops15h 55mDelta
Sat 10/256:05 amOSL - ORD
2 stops17h 42mDelta
Deal found 6/9$573
This CheapOair deal was found by Cheapflights users on 6/12. 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.
Fri 8/222:20 pmORD - OSL
1 stop26h 35mMultiple Airlines
Wed 9/109:45 amOSL - ORD
2 stops17h 26mMultiple Airlines
Deal found 6/12$575
This Delta deal was found by Cheapflights users on 6/9. 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 9/86:17 pmMDW - OSL
2 stops15h 23mDelta
Wed 9/176:00 amOSL - MDW
2 stops19h 07mDelta
Deal found 6/9$577
This Ovago deal was found by Cheapflights users on 6/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3110:30 pmORD - OSL
1 stop18h 20mLufthansa
Wed 10/296:05 amOSL - ORD
1 stop14h 05mLufthansa
Deal found 6/10$578
This Air France deal was found by Cheapflights users on 6/10. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/74:20 pmORD - OSL
1 stop13h 10mKLM
Mon 8/189:25 amOSL - ORD
2 stops15h 16mKLM
Deal found 6/10$595
This Gurufare deal was found by Cheapflights users on 6/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2811:54 amORD - OSL
2 stops15h 56mBritish Airways
Mon 9/15:05 pmOSL - ORD
1 stop29h 50mBritish Airways
Deal found 6/10$615
This oojo deal was found by Cheapflights users on 6/10. 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 9/297:15 pmORD - TRF
1 stop12h 05mScandinavian Airlines
Mon 10/62:55 pmTRF - ORD
1 stop32h 15mScandinavian Airlines
Deal found 6/10$621

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 June 12, 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

Fri 10/17

6:00 pm-10:10 pm

1 stop21h 10m

Oslo Gardermoen

Sat 10/25

6:35 am-2:55 pm

2 stops15h 20m

$559

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Wed 9/3

1:59 pm-10:40 am

2 stops13h 41m

Oslo Gardermoen

Sat 9/13

8:20 am-5:00 pm

1 stop15h 40m

$560

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Mon 8/4

7:15 pm-9:25 pm

2 stops19h 10m

Oslo Sandefjord

Wed 8/20

4:25 pm-4:10 pm

2 stops30h 45m

$560

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 7/15

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Thu 7/24

4:30 pm-9:15 pm

1 stop11h 45m

$561

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Thu 9/11

2:00 pm-3:40 pm

2 stops18h 40m

Oslo Gardermoen

Mon 9/15

6:35 am-8:11 pm

2 stops20h 36m

$569

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 10/17

7:55 pm-6:50 pm

2 stops15h 55m

Oslo Gardermoen

Sat 10/25

6:05 am-4:47 pm

2 stops17h 42m

$573

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 8/22

2:20 pm-11:55 pm

1 stop26h 35m

Oslo Gardermoen

Wed 9/10

9:45 am-8:11 pm

2 stops17h 26m

$575

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Mon 9/8

6:17 pm-4:40 pm

2 stops15h 23m

Oslo Gardermoen

Wed 9/17

6:00 am-6:07 pm

2 stops19h 07m

$577

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Thu 7/31

10:30 pm-11:50 pm

1 stop18h 20m

Oslo Gardermoen

Wed 10/29

6:05 am-2:10 pm

1 stop14h 05m

$578

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Thu 8/7

4:20 pm-12:30 pm

1 stop13h 10m

Oslo Gardermoen

Mon 8/18

9:25 am-5:41 pm

2 stops15h 16m

$595

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 56 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, 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 $1,004). 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 June 12, 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 June 12, 2025.
To help decide which airline to fly from Illinois to Oslo, see what other customers have to say about Delta, KLM and Austrian 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
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $218. SWISS flights start at $416 while deals on United Airlines start at $420 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 $1,004). 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

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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 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$398Average$609FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$449Average$752FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$503Average$681FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$532Average$704FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$534Average$653FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$549Average$646FlexibilityNo cancel feeOn-time69%
KLMCheapest$550Average$726FlexibilityNo cancel feeOn-time75%
FinnairCheapest$552Average$679FlexibilityNo cancel feeOn-time76%
DeltaCheapest$582Average$663FlexibilityNo cancel feeOn-timeN/A

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