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$329+ Cheap flights from Oslo to Illinois

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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — ORD
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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Cheap flight deals from Oslo to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Oslo (OS1) to Illinois (USIL). 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 December 22, 2024.

Round-trip from

$330
(Ticket)

One-way from

$329
(StudentUniverse)
From Oslo to Illinois
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One-way flight from Oslo to Illinois
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Best flights from Oslo to Illinois
Discover carefully curated flight deals from Oslo to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 22, 2024.

This Ticket deal was found by Cheapflights users on 12/21. 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.
Thu 1/166:45 pmOSL - ORD
1 stop27h 45mTAP AIR PORTUGAL
Wed 1/297:15 pmORD - OSL
1 stop33h 50mTAP AIR PORTUGAL
Deal found 12/21$330
This Ticket deal was found by Cheapflights users on 12/22. 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 2/71:20 pmOSL - ORD
1 stop11h 30mScandinavian Airlines
Sun 2/167:40 pmORD - OSL
1 stop17h 45mScandinavian Airlines
Deal found 12/22$355
This Travelis deal was found by Cheapflights users on 12/20. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/1811:25 amOSL - ORD
1 stop14h 20mBritish Airways
Fri 1/319:45 pmORD - OSL
1 stop17h 30mBritish Airways
Deal found 12/20$359
This Travelis deal was found by Cheapflights users on 12/21. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/167:00 amOSL - ORD
1 stop17h 00mMultiple Airlines
Wed 1/2911:40 amORD - OSL
2 stops19h 35mMultiple Airlines
Deal found 12/21$389
This Ticket deal was found by Cheapflights users on 12/21. 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.
Thu 1/169:20 amOSL - MDW
2 stops15h 54mKLM
Wed 1/292:08 pmMDW - OSL
2 stops14h 47mKLM
Deal found 12/21$397
This Finnair deal was found by Cheapflights users on 12/21. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/167:00 amOSL - ORD
1 stop13h 55mFinnair
Wed 1/2910:00 pmORD - OSL
1 stop17h 40mFinnair
Deal found 12/21$399
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Thu 1/167:00 amOSL - ORD
1 stop17h 00mAmerican Airlines
Wed 1/2911:40 amORD - OSL
2 stops16h 15mAmerican Airlines
Deal found 12/21$410
This Delta deal was found by Cheapflights users on 12/20. 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 1/189:20 amOSL - ORD
2 stops18h 55mDelta
Sat 1/252:15 pmORD - OSL
2 stops18h 45mDelta
Deal found 12/20$418
This Ticket deal was found by Cheapflights users on 12/20. 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.
Thu 1/97:00 amOSL - ORD
2 stops43h 50mIberia
Wed 1/1510:00 pmORD - OSL
1 stop33h 15mIberia
Deal found 12/20$444
This United Airlines deal was found by Cheapflights users on 12/20. 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 1/226:20 amOSL - STL
1 stop14h 35mUnited Airlines
Fri 1/318:27 amSTL - OSL
2 stops32h 03mUnited Airlines
Deal found 12/20$473
This Lufthansa deal was found by Cheapflights users on 12/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/226:20 amOSL - STL
1 stop14h 35mLufthansa
Fri 1/313:45 pmSTL - OSL
1 stop25h 00mLufthansa
Deal found 12/20$491
This SWISS deal was found by Cheapflights users on 12/21. 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.
Tue 1/74:05 pmOSL - ORD
2 stops55h 55mSWISS
Wed 1/157:05 pmORD - OSL
1 stop34h 05mSWISS
Deal found 12/21$506

Find flights from Oslo to Illinois within your budget

Customize your flight search to find flights from Oslo to Illinois 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 December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 1/16

6:45 pm-3:30 pm

1 stop27h 45m

Chicago O'Hare Intl

Wed 1/29

7:15 pm-12:05 pm

1 stop33h 50m

$330

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Fri 2/7

1:20 pm-5:50 pm

1 stop11h 30m

Chicago O'Hare Intl

Sun 2/16

7:40 pm-8:25 pm

1 stop17h 45m

$355

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sat 1/18

11:25 am-6:45 pm

1 stop14h 20m

Chicago O'Hare Intl

Fri 1/31

9:45 pm-10:15 pm

1 stop17h 30m

$359

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 1/16

7:00 am-5:00 pm

1 stop17h 00m

Chicago O'Hare Intl

Wed 1/29

11:40 am-2:15 pm

2 stops19h 35m

$389

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Thu 1/16

9:20 am-6:14 pm

2 stops15h 54m

Chicago Midway

Wed 1/29

2:08 pm-11:55 am

2 stops14h 47m

$397

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 1/16

7:00 am-1:55 pm

1 stop13h 55m

Chicago O'Hare Intl

Wed 1/29

10:00 pm-10:40 pm

1 stop17h 40m

$399

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 1/16

7:00 am-5:00 pm

1 stop17h 00m

Chicago O'Hare Intl

Wed 1/29

11:40 am-10:55 am

2 stops16h 15m

$410

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sat 1/18

9:20 am-9:15 pm

2 stops18h 55m

Chicago O'Hare Intl

Sat 1/25

5:20 pm-4:00 pm

1 stop15h 40m

$418

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Fri 2/7

6:30 am-6:11 pm

2 stops18h 41m

Chicago Midway

Sun 2/16

5:05 pm-4:25 pm

2 stops16h 20m

$421

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Wed 1/22

7:00 pm-4:23 pm

2 stops28h 23m

Lambert-St Louis

Fri 1/31

1:40 pm-4:25 pm

2 stops19h 45m

$424

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 43 results
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Best time to book a flight from Oslo to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois 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.

Travel insights for flights from Oslo to Illinois

Get recent, data-driven insights about flights from Oslo to Illinois including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Oslo to Illinois (average of $245). Flying from Oslo to Illinois in March is currently the most expensive (average of $317). 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 IL?

Find hourly flight availability from Oslo to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 22, 2024.

When flying from Oslo to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated December 22, 2024.
Get a feel of what it's like to fly with Scandinavian Airlines, British Airways and Finnair from Oslo to Illinois by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,594 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,342 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,283 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

LOT
7.6
Good
1,127 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.6
Good
1,605 reviews
Delta
8.0
Very good
8,594 reviews

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Overall

8.0

Crew

8.6

Food

7.3

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Oslo to Illinois. 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 Oslo to Illinois one-way?

    One-way options have recently been found by users for as low as $329 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $406 and LOT from $443 one-way.

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

    While some choose either Oslo Gardermoen - Chicago Midway or Oslo Sandefjord - Chicago O'Hare Intl, Oslo Gardermoen - Chicago O'Hare Intl is the most popular route from Oslo to Illinois.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Oslo to Illinois (average of $245). Flying from Oslo to Illinois in March is currently the most expensive (average of $317). 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 Oslo to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Oslo to Illinois

Discover the top 3 airlines that operate flights from Oslo to Illinois. 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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$370Average$565FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$416Average$513FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$429Average$556FlexibilityNo cancel feeOn-time69%
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