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Oslo

$254+ Cheap flights from Chicago (CHI) 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 11/28. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — OSL
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Oslo are usually found in November or October, booked 47 days in advance, depart on a Sunday or Wednesday and return on a Thursday

Cheap flight deals from Chicago to Oslo

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) 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 August 14, 2025.

Round-trip from

$420
(Scandinavian Airlines)

One-way from

$254
(oojo)

Popular in

June

Cheapest in

November

Average price

$646
From Chicago (CHI) to Oslo
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One-way flight from Chicago (CHI) to Oslo
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Highest demand for flights based on searches. 15% potential increase in price ($114 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 August 2025
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Find flight deals from Chicago to Oslo

Cheapest flights from Chicago to Oslo
Explore the most affordable flight options available from Chicago to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 8/13. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:20 pmORD - TRF
1 stop11h 45mScandinavian Airlines
Sun 12/72:35 pmTRF - ORD
1 stop33h 10mScandinavian Airlines
Deal found 8/13$420
This FlightHub deal was found by Cheapflights users on 8/13. 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.
Tue 9/97:25 pmORD - OSL
1 stop10h 10mIcelandair
Wed 9/171:50 pmOSL - ORD
1 stop11h 25mIcelandair
Deal found 8/13$421
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Tue 8/267:25 pmORD - OSL
1 stop13h 00mIcelandair
Wed 9/34:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 8/14$422
This oojo deal was found by Cheapflights users on 8/13. 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 9/197:25 pmORD - OSL
1 stop13h 00mIcelandair
Sun 10/510:30 pmOSL - ORD
1 stop26h 45mIcelandair
Deal found 8/13$427
This Gurufare deal was found by Cheapflights users on 8/14. 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.
Mon 8/2510:15 pmORD - OSL
1 stop10h 10mIcelandair
Wed 9/34:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 8/14$437
This Icelandair deal was found by Cheapflights users on 8/14. 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.
Sun 8/247:25 pmORD - OSL
1 stop13h 00mIcelandair
Wed 9/34:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 8/14$444
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Tue 8/2610:15 pmORD - OSL
1 stop10h 10mIcelandair
Tue 9/24:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 8/14$447
This Gurufare deal was found by Cheapflights users on 8/14. 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 8/287:25 pmORD - OSL
1 stop10h 10mIcelandair
Wed 9/34:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 8/14$450
This Icelandair deal was found by Cheapflights users on 8/14. 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.
Sat 8/3010:15 pmORD - OSL
1 stop10h 10mIcelandair
Wed 9/34:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 8/14$457
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Thu 8/287:25 pmORD - OSL
1 stop13h 00mIcelandair
Tue 9/24:30 pmOSL - ORD
1 stop11h 45mIcelandair
Deal found 8/14$460
This Kiwi.com deal was found by Cheapflights users on 8/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2510:15 pmORD - OSL
1 stop10h 10mIcelandair
Tue 9/24:30 pmOSL - ORD
1 stop32h 45mIcelandair
Deal found 8/14$461
This Gotogate deal was found by Cheapflights users on 8/13. 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.
Tue 11/46:30 pmORD - OSL
1 stop10h 05mIcelandair
Fri 11/141:10 pmOSL - ORD
1 stop11h 10mIcelandair
Deal found 8/13$468

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago 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 August 14, 2025.
Use the filters below to find and compare flights from Chicago to Oslo that are best for you.

Fly from

Chicago

Fly to

Oslo

Route

Depart

Return

Price

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Wed 12/3

7:20 pm-2:05 pm

1 stop11h 45m

Oslo Sandefjord

Sun 12/7

2:35 pm-4:45 pm

1 stop33h 10m

$420

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 9/9

7:25 pm-12:35 pm

1 stop10h 10m

Oslo Gardermoen

Wed 9/17

1:50 pm-6:15 pm

1 stop11h 25m

$421

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 8/26

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Thu 9/4

4:30 pm-9:15 pm

1 stop11h 45m

$422

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 8/26

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Wed 9/3

4:30 pm-9:15 pm

1 stop11h 45m

$422

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Fri 9/19

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Sun 10/5

10:30 pm-6:15 pm

1 stop26h 45m

$427

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 8/25

10:15 pm-3:25 pm

1 stop10h 10m

Oslo Gardermoen

Fri 9/5

4:30 pm-9:15 pm

1 stop11h 45m

$437

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 8/25

10:15 pm-3:25 pm

1 stop10h 10m

Oslo Gardermoen

Wed 9/3

4:30 pm-9:15 pm

1 stop11h 45m

$437

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 8/25

7:25 pm-12:35 pm

1 stop10h 10m

Oslo Gardermoen

Thu 9/4

1:50 pm-9:15 pm

1 stop14h 25m

$437

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 8/24

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Wed 9/3

4:30 pm-9:15 pm

1 stop11h 45m

$444

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 8/24

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Thu 9/4

1:50 pm-6:15 pm

1 stop11h 25m

$444

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 56 results
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Best time to book a flight from Chicago to Oslo

Have a flexible travel schedule? Discover the best time to fly to Oslo from Chicago 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 Chicago to Oslo

How far ahead should I book a flight from Chicago to Oslo?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Oslo. Price data was last updated on August 8, 2025.

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Oslo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Chicago to Oslo (average of $567). Flying from Chicago to Oslo in June is currently the most expensive (average of $1,009). 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 CHI to OSL?

Find hourly flight availability from Chicago 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 August 14, 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago to Oslo at noon. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the evening.

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

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 August 14, 2025.
Read through reviews of airlines operating flights from Chicago to Oslo, such as Finnair, Scandinavian Airlines, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,321 reviews

Overall

7.6

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Finnair
7.6
Good
1,321 reviews
Finnair
7.6
Good
1,321 reviews

Overall

7.6

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Scandinavian Airlines
7.4
Good
1,468 reviews
Finnair
7.6
Good
1,321 reviews

Overall

7.6

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
United Airlines
7.4
Good
8,916 reviews
Finnair
7.6
Good
1,321 reviews

Overall

7.6

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Icelandair
7.0
Good
526 reviews
Finnair
7.6
Good
1,321 reviews

Overall

7.6

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
British Airways
6.7
Okay
7,266 reviews
Finnair
7.6
Good
1,321 reviews

Overall

7.6

Entertainment

6.9

Comfort

7.5

Boarding

7.6

Crew

8.1

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Related info for your journey

Find useful and relevant information for your journey from Chicago 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 flying from Chicago to Oslo round-trip?

    Icelandair, at $408, was found to be the cheapest airline from Chicago to Oslo.Alternate airlines to your destination round-trip include Scandinavian Airlines and Lufthansa. You may be able to fly from Chicago to Oslo for 33% less than the average price by searching for these airlines.

  • What are the most popular routes from Chicago to Oslo?

    When deciding which route to take from Chicago 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 Chicago to Oslo that include hotel bookings?

    Yes. In addition to deals on Chicago to Oslo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Oslo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Oslo.

  • Can I find deals for business class flights from Chicago to Oslo?

    Yes. Cheapflights offers flight deals from Chicago 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 Chicago to Oslo?

    Currently, November is the cheapest month in which you can book a flight from Chicago to Oslo (average of $567). Flying from Chicago to Oslo in June is currently the most expensive (average of $1,009). 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.

Top 9 airlines flying from Chicago to Oslo

Discover the top 9 airlines that operate flights from Chicago 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$408Average$606FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$432Average$806FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$515Average$653FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$532Average$710FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$540Average$685FlexibilityNo cancel feeOn-time70%
KLMCheapest$550Average$751FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$550Average$658FlexibilityNo cancel feeOn-time69%
FinnairCheapest$552Average$678FlexibilityNo cancel feeOn-time76%
DeltaCheapest$562Average$870FlexibilityNo cancel feeOn-timeN/A

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