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Oslo

$303+ 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 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — OSL
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 2, 2025.

Round-trip from

$536
(oojo)

One-way from

$303
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$588
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. 20% potential increase in price ($163 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 2, 2025.

This oojo deal was found by Cheapflights users on 3/31. 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 9/27:15 pmORD - OSL
1 stop32h 05mScandinavian Airlines
Tue 9/911:05 amOSL - ORD
1 stop12h 05mScandinavian Airlines
Deal found 3/31$536
This StudentUniverse deal was found by Cheapflights users on 3/31. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/244:34 pmORD - OSL
2 stops20h 36mFinnair
Tue 12/25:20 pmOSL - ORD
2 stops27h 35mFinnair
Deal found 3/31$538
This Icelandair deal was found by Cheapflights users on 3/31. 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 10/107:25 pmORD - OSL
1 stop10h 10mIcelandair
Tue 10/141:50 pmOSL - ORD
1 stop11h 25mIcelandair
Deal found 3/31$554
This British Airways deal was found by Cheapflights users on 3/31. 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.
Fri 10/316:35 pmORD - OSL
2 stops15h 50mBritish Airways
Sat 11/88:45 amOSL - ORD
2 stops17h 35mBritish Airways
Deal found 3/31$558
This Delta deal was found by Cheapflights users on 3/31. 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 10/312:10 pmORD - OSL
2 stops17h 40mDelta
Sat 11/89:20 amOSL - ORD
1 stop12h 10mDelta
Deal found 3/31$562
This oojo deal was found by Cheapflights users on 3/30. 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 10/97:15 pmORD - TRF
1 stop12h 05mScandinavian Airlines
Mon 10/132:55 pmTRF - ORD
1 stop32h 15mScandinavian Airlines
Deal found 3/30$574
This American Airlines deal was found by Cheapflights users on 3/31. 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 8/1110:35 pmORD - OSL
1 stop17h 55mAmerican Airlines
Thu 8/217:45 amOSL - ORD
1 stop15h 10mAmerican Airlines
Deal found 3/31$580
This oojo deal was found by Cheapflights users on 3/31. 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 9/2911:45 pmORD - OSL
1 stop28h 15mTurkish Airlines
Wed 10/86:40 pmOSL - ORD
1 stop22h 00mTurkish Airlines
Deal found 3/31$589
This Flightnetwork deal was found by Cheapflights users on 3/31. 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.
Tue 5/68:40 amORD - OSL
2 stops24h 00mAir Canada
Tue 5/136:35 amOSL - ORD
2 stops20h 37mAir Canada
Deal found 3/31$598
This Delta deal was found by Cheapflights users on 4/1. 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 9/35:59 pmMDW - OSL
2 stops15h 41mDelta
Wed 9/106:00 amOSL - MDW
2 stops19h 07mDelta
Deal found 4/1$603
This Flightnetwork deal was found by Cheapflights users on 3/30. 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.
Tue 5/62:20 pmORD - OSL
1 stop15h 45mMultiple Airlines
Tue 5/136:35 amOSL - ORD
2 stops20h 37mMultiple Airlines
Deal found 3/30$604
This United Airlines deal was found by Cheapflights users on 3/31. 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 11/229:25 pmORD - OSL
1 stop13h 30mUnited Airlines
Sat 11/291:35 pmOSL - ORD
2 stops26h 22mUnited Airlines
Deal found 3/31$605

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 2, 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

Tue 9/2

7:15 pm-10:20 am

1 stop32h 05m

Oslo Gardermoen

Tue 9/9

11:05 am-4:10 pm

1 stop12h 05m

$536

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 5/6

10:25 pm-11:25 pm

1 stop18h 00m

Oslo Gardermoen

Tue 5/13

1:10 pm-5:50 pm

1 stop11h 40m

$549

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 5/6

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Tue 5/13

1:50 pm-6:15 pm

1 stop11h 25m

$556

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 8/11

10:35 pm-11:30 pm

1 stop17h 55m

Oslo Gardermoen

Thu 8/21

7:45 am-3:55 pm

1 stop15h 10m

$580

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 5/13

10:25 pm-11:25 pm

1 stop18h 00m

Oslo Gardermoen

Thu 5/22

7:45 am-3:55 pm

1 stop15h 10m

$583

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 5/6

8:40 am-1:05 pm

2 stops21h 25m

Oslo Gardermoen

Tue 5/13

9:45 am-8:12 pm

2 stops17h 27m

$597

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Wed 9/3

5:59 pm-4:40 pm

2 stops15h 41m

Oslo Gardermoen

Wed 9/10

6:00 am-6:07 pm

2 stops19h 07m

$603

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 4/28

6:15 pm-4:35 pm

2 stops15h 20m

Oslo Gardermoen

Tue 5/6

6:05 am-3:00 pm

1 stop15h 55m

$603

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 5/6

2:20 pm-1:05 pm

1 stop15h 45m

Oslo Gardermoen

Tue 5/13

6:35 am-8:12 pm

2 stops20h 37m

$604

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Thu 7/31

7:50 pm-11:00 am

1 stop32h 10m

Oslo Gardermoen

Tue 10/28

6:15 pm-7:25 pm

1 stop31h 10m

$612

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 53 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 $1,110). 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 2, 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 2, 2025.
To help decide which airline to fly from Illinois to Oslo, see what other customers have to say about Delta, KLM and Finnair. 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
7,898 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

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
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

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
1,323 reviews
Delta
8.0
Very good
7,898 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

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.
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,898 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

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
1,572 reviews
Delta
8.0
Very good
7,898 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

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.
Air France
7.4
Good
1,427 reviews
Delta
8.0
Very good
7,898 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Crew

8.5

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 $315. TAP AIR PORTUGAL flights start at $357 while deals on British Airways start at $463 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 $1,110). 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.
Newark to Oslo Gardermoen flights
John F Kennedy Intl to Oslo Gardermoen flights
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John F Kennedy Intl to Bergen flights
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Dulles Intl to Sandefjord flights
Atlanta to Oslo Gardermoen flights
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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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$410Average$679FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$446Average$797FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$503Average$683FlexibilityNo cancel feeOn-time70%
FinnairCheapest$520Average$664FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$532Average$620FlexibilityNo cancel feeOn-time71%
LufthansaCheapest$533Average$819FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$540Average$600FlexibilityNo cancel feeOn-time77%
KLMCheapest$546Average$692FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$549Average$689FlexibilityNo cancel feeOn-time69%
DeltaCheapest$583Average$752FlexibilityNo cancel feeOn-timeN/A

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