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$372+ Cheap flights from Oslo to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — ORD
janv. 26 — févr. 21
dim. 1/26
dim. 2/2
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 janvier 21, 2025.

Round-trip from

$372
(Mytrip)
From Oslo to Illinois
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Find flight deals from Oslo to Illinois

Cheapest flights from Oslo to Illinois
Explore the most affordable flight options available from Oslo to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on janvier 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 3/21:05 pmOSL - ORD
1 stop11h 15mIcelandair
lun. 3/177:30 pmORD - OSL
1 stop10h 05mIcelandair
Deal found 1/21$372
This Ticket deal was found by Cheapflights users on 1/21. 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.
mar. 4/87:15 pmOSL - ORD
1 stop25h 55mKLM
ven. 4/184:20 pmORD - OSL
1 stop33h 20mKLM
Deal found 1/21$381
This Ticket deal was found by Cheapflights users on 1/21. 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.
dim. 3/27:15 amOSL - ORD
1 stop14h 30mFinnair
lun. 3/174:27 pmORD - OSL
2 stops33h 38mFinnair
Deal found 1/21$388
This Ticket deal was found by Cheapflights users on 1/21. 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.
jeu. 2/277:00 amOSL - ORD
1 stop17h 00mBritish Airways
mer. 3/1211:42 amORD - OSL
2 stops20h 33mBritish Airways
Deal found 1/21$391
This Ticket deal was found by Cheapflights users on 1/21. 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.
dim. 3/27:15 amOSL - ORD
2 stops17h 27mMultiple Airlines
lun. 3/174:27 pmORD - OSL
2 stops33h 38mMultiple Airlines
Deal found 1/21$400
This Delta deal was found by Cheapflights users on 1/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 3/29:20 amOSL - ORD
1 stop12h 10mDelta
lun. 3/175:00 pmORD - OSL
2 stops17h 25mDelta
Deal found 1/21$416
This American Airlines deal was found by Cheapflights users on 1/21. 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.
dim. 3/27:15 amOSL - ORD
1 stop14h 30mAmerican Airlines
lun. 3/179:15 pmORD - OSL
1 stop19h 25mAmerican Airlines
Deal found 1/21$419
This Delta deal was found by Cheapflights users on 1/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 3/26:30 amOSL - MDW
2 stops18h 41mDelta
lun. 3/176:42 pmMDW - OSL
2 stops15h 43mDelta
Deal found 1/21$422
This Flightsearch deal was found by Cheapflights users on 1/21. 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 Flightsearch is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 2/271:05 pmTRF - ORD
1 stop11h 45mScandinavian Airlines
mer. 3/121:35 pmORD - TRF
2 stops17h 00mScandinavian Airlines
Deal found 1/21$446
This United Airlines deal was found by Cheapflights users on 1/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/81:00 pmOSL - ORD
2 stops26h 04mUnited Airlines
ven. 4/187:30 amORD - OSL
2 stops27h 30mUnited Airlines
Deal found 1/21$465
This Ticket deal was found by Cheapflights users on 1/21. 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.
sam. 3/16:00 amOSL - ORD
1 stop18h 50mScandinavian Airlines
ven. 3/148:40 pmORD - OSL
1 stop13h 50mScandinavian Airlines
Deal found 1/21$535
This Sembo deal was found by Cheapflights users on 1/21. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/87:15 pmOSL - MDW
2 stops29h 47mMultiple Airlines
ven. 4/185:59 pmMDW - OSL
2 stops31h 41mMultiple Airlines
Deal found 1/21$543

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 janvier 21, 2025.

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Fly to

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Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

dim. 3/2

1:05 pm-5:20 pm

1 stop11h 15m

Chicago O'Hare Intl

lun. 3/17

7:30 pm-11:35 am

1 stop10h 05m

$372

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 4/8

7:15 pm-2:10 pm

1 stop25h 55m

Chicago O'Hare Intl

ven. 4/18

4:20 pm-8:40 am

1 stop33h 20m

$381

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

dim. 3/2

7:15 am-2:45 pm

1 stop14h 30m

Chicago O'Hare Intl

lun. 3/17

4:27 pm-8:05 am

2 stops33h 38m

$388

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jeu. 2/27

7:00 am-5:00 pm

1 stop17h 00m

Chicago O'Hare Intl

mer. 3/12

11:42 am-2:15 pm

2 stops20h 33m

$391

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

dim. 3/2

7:15 am-5:42 pm

2 stops17h 27m

Chicago O'Hare Intl

lun. 3/17

4:27 pm-8:05 am

2 stops33h 38m

$400

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

dim. 3/2

9:20 am-2:30 pm

1 stop12h 10m

Chicago O'Hare Intl

lun. 3/17

5:00 pm-4:25 pm

2 stops17h 25m

$416

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

dim. 3/2

7:15 am-2:45 pm

1 stop14h 30m

Chicago O'Hare Intl

lun. 3/17

9:15 pm-10:40 pm

1 stop19h 25m

$419

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

dim. 3/2

6:30 am-6:11 pm

2 stops18h 41m

Chicago Midway

lun. 3/17

6:42 pm-4:25 pm

2 stops15h 43m

$422

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

jeu. 2/27

1:05 pm-5:50 pm

1 stop11h 45m

Chicago O'Hare Intl

mer. 3/12

1:35 pm-12:35 pm

2 stops17h 00m

$446

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 4/8

1:00 pm-8:04 am

2 stops26h 04m

Chicago O'Hare Intl

ven. 4/18

7:30 am-6:00 pm

2 stops27h 30m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 30 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 $320). 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 janvier 21, 2025.

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 janvier 21, 2025.
Get a feel of what it's like to fly with Delta, KLM and Scandinavian Airlines 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
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

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
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

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
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

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
1,117 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

Reviews

1 / 10

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

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.9

Comfort

8.0

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 $414 on Icelandair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $459 and Scandinavian Airlines from $590 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 $320). 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 janvier 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$370Average$664FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$416Average$547FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$429Average$556FlexibilityNo cancel feeOn-time69%
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