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$368+ Cheap flights from Oslo to Chicago (CHI)

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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — CHI
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheapflights Tip: The best prices from Oslo to Chicago are usually found in November or September, booked 53 days in advance, depart on a Thursday or Monday and return on a Sunday

Cheap flight deals from Oslo to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from Oslo (OS1) to Chicago (CHI). 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 July 31, 2025.

Round-trip from

$474
(Delta)

One-way from

$368
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$682
From Oslo to Chicago (CHI)
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One-way flight from Oslo to Chicago (CHI)
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Highest demand for flights based on searches. 14% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Oslo to Chicago

Cheapest flights from Oslo to Chicago
Explore the most affordable flight options available from Oslo to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Delta deal was found by Cheapflights users on 7/31. 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.
Sat 8/236:30 amOSL - MDW
2 stops19h 07mDelta
Mon 9/156:15 pmMDW - OSL
2 stops15h 25mDelta
Deal found 7/31$474
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:00 amOSL - ORD
2 stops18h 30mDelta
Sat 9/201:00 pmORD - OSL
2 stops15h 05mDelta
Deal found 7/30$501
This Flysmarter deal was found by Cheapflights users on 7/31. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/235:40 amOSL - ORD
1 stop14h 10mMultiple Airlines
Mon 9/152:00 pmORD - OSL
2 stops17h 10mMultiple Airlines
Deal found 7/31$503
This Austrian Airlines deal was found by Cheapflights users on 7/31. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/142:55 pmOSL - ORD
2 stops34h 30mAustrian Airlines
Sun 9/219:25 pmORD - OSL
2 stops57h 45mAustrian Airlines
Deal found 7/31$506
This Scandinavian Airlines deal was found by Cheapflights users on 7/30. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:35 pmTRF - ORD
1 stop33h 10mScandinavian Airlines
Mon 12/87:00 amORD - TRF
2 stops24h 05mScandinavian Airlines
Deal found 7/30$507
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:45 amOSL - ORD
2 stops20h 13mUnited Airlines
Sat 10/410:30 pmORD - OSL
1 stop27h 25mUnited Airlines
Deal found 7/30$514
This Mytrip deal was found by Cheapflights users on 7/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:45 amOSL - ORD
2 stops15h 19mAir Canada
Thu 10/93:50 pmORD - OSL
2 stops16h 50mAir Canada
Deal found 7/31$554
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/238:20 amOSL - ORD
2 stops18h 51mAmerican Airlines
Mon 9/155:40 pmORD - OSL
1 stop22h 50mAmerican Airlines
Deal found 7/30$565
This Brussels Airlines deal was found by Cheapflights users on 7/31. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:05 pmOSL - ORD
2 stops30h 15mBrussels Airlines
Sun 9/146:00 pmORD - OSL
2 stops16h 15mBrussels Airlines
Deal found 7/31$568
This British Airways deal was found by Cheapflights users on 7/31. 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.
Thu 9/257:45 amOSL - ORD
1 stop17h 30mBritish Airways
Thu 10/91:43 pmORD - OSL
2 stops19h 32mBritish Airways
Deal found 7/31$573
This Ticket deal was found by Cheapflights users on 7/31. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/226:30 amOSL - ORD
1 stop14h 40mKLM
Sat 8/304:15 pmORD - OSL
1 stop15h 15mKLM
Deal found 7/31$606
This SWISS deal was found by Cheapflights users on 7/31. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/95:40 amOSL - ORD
1 stop14h 10mSWISS
Sat 8/303:55 pmORD - OSL
1 stop14h 10mSWISS
Deal found 7/31$612

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oslo to Chicago 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 July 31, 2025.
Use the filters below to find and compare flights from Oslo to Chicago that are best for you.

Fly from

Oslo

Fly to

Chicago

Route

Depart

Return

Price

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Sat 8/23

6:30 am-6:37 pm

2 stops19h 07m

Chicago Midway

Mon 9/15

6:15 pm-4:40 pm

2 stops15h 25m

$474

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sat 9/13

6:00 am-5:30 pm

2 stops18h 30m

Chicago O'Hare Intl

Sat 9/20

1:00 pm-11:05 am

2 stops15h 05m

$501

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sat 8/23

5:40 am-12:50 pm

1 stop14h 10m

Chicago O'Hare Intl

Mon 9/15

2:00 pm-2:10 pm

2 stops17h 10m

$503

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sun 9/14

2:55 pm-6:25 pm

2 stops34h 30m

Chicago O'Hare Intl

Sun 9/21

9:25 pm-2:10 pm

2 stops57h 45m

$506

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

Thu 12/4

2:35 pm-4:45 pm

1 stop33h 10m

Chicago O'Hare Intl

Mon 12/8

7:00 am-2:05 pm

2 stops24h 05m

$507

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Wed 10/1

6:45 am-7:58 pm

2 stops20h 13m

Chicago O'Hare Intl

Sat 10/4

10:30 pm-8:55 am

1 stop27h 25m

$514

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/25

6:45 am-3:04 pm

2 stops15h 19m

Chicago O'Hare Intl

Thu 10/9

3:50 pm-3:40 pm

2 stops16h 50m

$554

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sat 8/23

8:20 am-8:11 pm

2 stops18h 51m

Chicago O'Hare Intl

Mon 9/15

5:40 pm-11:30 pm

1 stop22h 50m

$565

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 9/1

6:05 pm-5:20 pm

2 stops30h 15m

Chicago O'Hare Intl

Sun 9/14

6:00 pm-5:15 pm

2 stops16h 15m

$568

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/25

7:45 am-6:15 pm

1 stop17h 30m

Chicago O'Hare Intl

Thu 10/9

1:43 pm-4:15 pm

2 stops19h 32m

$573

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 35 results
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Best time to book a flight from Oslo to Chicago

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

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

Use this chart to determine the optimal time to book a round-trip flight from Oslo to Chicago. Price data was last updated on July 25, 2025.

The price you pay for your flight from Oslo to Chicago may vary depending on when you book. For the best chance of a lower fare, look to book 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Oslo to Chicago (average of $245). Flying from Oslo to Chicago in March is currently the most expensive (average of $321). 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 OSL to CHI?

Find hourly flight availability from Oslo to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

It’s optimal to fly from Oslo to Chicago in the morning. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight in the afternoon.

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

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated July 31, 2025.
Get a feel of what it's like to fly with Delta, KLM, and LOT from Oslo to Chicago by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
LOT
7.6
Good
1,105 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Austrian Airlines
7.6
Good
823 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,981 reviews

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Crew

8.5

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

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

    Flying on Delta is currently your cheapest option to Chicago, with prices starting at $474. Additional round-trip tickets that might be worth considering are offered by Austrian Airlines and Scandinavian Airlines, with the lowest prices starting at $506 and $507, respectively. You may be able to fly from Oslo to Chicago for 8% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Oslo to Chicago one-way?

    $374 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Lufthansa and Icelandair, with prices starting from $487 and $495, respectively.

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

    The most popular flight routes from Oslo to Chicago are Oslo Gardermoen - Chicago O'Hare Intl, Oslo Gardermoen - Chicago Midway and Oslo Sandefjord - Chicago O'Hare Intl.

  • Can I find deals for flights from Oslo to Chicago that include hotel bookings?

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Oslo to Chicago (average of $245). Flying from Oslo to Chicago in March is currently the most expensive (average of $321). 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

Traveling to a place near Chicago?

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Lansing
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Porter
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Chesterton

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Alternative routes for Oslo to Chicago

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