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Oslo

$272+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSL
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Round-trip from

$562
(Ticket)

One-way from

$272
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$611
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. 19% potential increase in price ($154 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 30, 2025.

This Gurufare deal was found by Cheapflights users on 4/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/267:00 amORD - OSL
2 stops19h 15mScandinavian Airlines
Wed 9/34:10 pmOSL - ORD
1 stop31h 00mScandinavian Airlines
Deal found 4/27$557
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 5/125:40 pmORD - OSL
1 stop22h 50mAmerican Airlines
Wed 5/217:40 amOSL - ORD
2 stops18h 56mAmerican Airlines
Deal found 4/29$563
This British Airways deal was found by Cheapflights users on 4/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/145:00 pmORD - OSL
1 stop23h 55mBritish Airways
Wed 8/207:40 amOSL - ORD
1 stop15h 15mBritish Airways
Deal found 4/28$564
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/67:59 pmORD - OSL
2 stops15h 51mDelta
Tue 8/196:30 amOSL - ORD
1 stop14h 40mDelta
Deal found 4/28$565
This Gotogate deal was found by Cheapflights users on 4/29. 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.
Fri 9/1210:40 amORD - OSL
2 stops19h 25mMultiple Airlines
Tue 9/306:35 amOSL - ORD
2 stops15h 15mMultiple Airlines
Deal found 4/29$568
This Icelandair deal was found by Cheapflights users on 4/28. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:25 pmORD - OSL
1 stop10h 10mIcelandair
Fri 10/34:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 4/28$572
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:45 pmMDW - OSL
2 stops17h 05mDelta
Tue 12/169:20 amOSL - MDW
2 stops16h 16mDelta
Deal found 4/28$575
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/122:00 pmORD - OSL
2 stops17h 10mAir Canada
Wed 5/289:45 amOSL - ORD
2 stops17h 27mAir Canada
Deal found 4/28$578
This CrystalTravel deal was found by Cheapflights users on 4/29. 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 8/77:05 pmORD - OSL
1 stop21h 50mSWISS
Mon 8/185:40 amOSL - ORD
1 stop13h 30mSWISS
Deal found 4/29$579
This CrystalTravel deal was found by Cheapflights users on 4/29. 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.
Fri 9/129:40 pmORD - OSL
1 stop17h 30mLufthansa
Tue 9/307:15 amOSL - ORD
1 stop18h 00mLufthansa
Deal found 4/29$584
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/910:50 amORD - OSL
2 stops15h 10mUnited Airlines
Tue 8/196:35 amOSL - ORD
1 stop15h 20mUnited Airlines
Deal found 4/28$588
This oojo deal was found by Cheapflights users on 4/27. 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.
Tue 8/267:15 pmORD - TRF
1 stop12h 05mScandinavian Airlines
Wed 9/32:55 pmTRF - ORD
1 stop32h 15mScandinavian Airlines
Deal found 4/27$592

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 April 30, 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

Sun 5/11

9:02 am-12:15 pm

2 stops20h 13m

Oslo Gardermoen

Sat 5/24

9:50 am-8:12 pm

2 stops17h 22m

$562

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 5/12

5:40 pm-11:30 pm

1 stop22h 50m

Oslo Gardermoen

Wed 5/21

7:40 am-7:36 pm

2 stops18h 56m

$563

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 5/11

2:20 pm-1:05 pm

1 stop15h 45m

Oslo Gardermoen

Sat 5/24

9:50 am-8:12 pm

2 stops17h 22m

$574

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Mon 8/11

1:00 pm-11:50 am

2 stops15h 50m

Oslo Gardermoen

Thu 8/21

6:30 am-6:28 pm

2 stops18h 58m

$590

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Tue 8/26

7:15 pm-2:20 pm

1 stop12h 05m

Oslo Sandefjord

Wed 9/3

2:55 pm-4:10 pm

1 stop32h 15m

$592

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 5/11

2:20 pm-1:05 pm

1 stop15h 45m

Oslo Gardermoen

Sat 5/24

5:40 am-3:55 pm

1 stop17h 15m

$594

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Wed 5/7

4:55 pm-7:15 pm

1 stop19h 20m

Oslo Gardermoen

Sat 5/17

8:20 am-5:00 pm

1 stop15h 40m

$599

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 5/9

5:50 pm-10:10 pm

1 stop21h 20m

Oslo Gardermoen

Wed 5/21

6:50 am-8:12 pm

2 stops20h 22m

$602

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Wed 5/7

1:30 pm-11:50 am

2 stops15h 20m

Oslo Gardermoen

Sat 5/17

9:20 am-2:10 pm

1 stop11h 50m

$615

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 7/7

9:40 pm-10:10 pm

1 stop17h 30m

Oslo Gardermoen

Mon 7/21

6:55 pm-12:30 pm

1 stop24h 35m

$688

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 44 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 $1,059). 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 April 30, 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 April 30, 2025.
To help decide which airline to fly from Illinois to Oslo, see what other customers have to say about Delta, KLM and SWISS. 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
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,788 reviews
Delta
8.0
Very good
7,929 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

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 $294. TAP AIR PORTUGAL flights start at $359 while deals on Delta start at $457 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 $1,059). 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$402Average$647FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$449Average$790FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$503Average$688FlexibilityNo cancel feeOn-time70%
FinnairCheapest$520Average$676FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$532Average$663FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$533Average$821FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$549Average$675FlexibilityNo cancel feeOn-time69%
KLMCheapest$550Average$680FlexibilityNo cancel feeOn-time75%
DeltaCheapest$582Average$647FlexibilityNo cancel feeOn-timeN/A

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