HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Illinois

$295+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Oslo to Illinois with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Oslo to Illinois

Keep the following information in mind while searching for Oslo to Illinois flight deals. Data was last updated February 20, 2025.

Round-trip from

$356
(Ticket)

One-way from

$295
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$524
From Oslo to Illinois
Search Deals
One-way flight from Oslo to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($87 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 20, 2025.

This Ticket deal was found by Cheapflights users on 2/19. 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.
Mon 4/141:10 pmOSL - ORD
1 stop11h 40mFinnair
Wed 4/305:45 pmORD - OSL
1 stop22h 45mFinnair
Deal found 2/19$356
This Sembo deal was found by Cheapflights users on 2/20. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/144:20 pmOSL - ORD
1 stop33h 00mIcelandair
Wed 4/3010:15 pmORD - OSL
1 stop31h 20mIcelandair
Deal found 2/20$372
This Ticket deal was found by Cheapflights users on 2/20. 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 3/611:40 amOSL - ORD
1 stop14h 05mMultiple Airlines
Mon 3/104:27 pmORD - OSL
2 stops33h 38mMultiple Airlines
Deal found 2/20$400
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 4/291:10 pmOSL - ORD
1 stop11h 40mAmerican Airlines
Wed 5/78:06 amORD - OSL
2 stops19h 34mAmerican Airlines
Deal found 2/19$410
This Travelis deal was found by Cheapflights users on 2/20. 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.
Thu 3/67:00 amOSL - ORD
2 stops31h 14mBritish Airways
Mon 3/106:50 pmORD - OSL
2 stops21h 50mBritish Airways
Deal found 2/20$427
This United Airlines deal was found by Cheapflights users on 2/18. 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.
Mon 4/147:15 amOSL - ORD
1 stop18h 00mUnited Airlines
Wed 4/234:15 pmORD - OSL
2 stops22h 55mUnited Airlines
Deal found 2/18$462
This Flysmarter deal was found by Cheapflights users on 2/20. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/61:05 pmTRF - ORD
1 stop11h 45mScandinavian Airlines
Mon 3/1010:35 amORD - TRF
2 stops20h 00mScandinavian Airlines
Deal found 2/20$591
This Delta deal was found by Cheapflights users on 2/19. 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.
Mon 4/286:00 amOSL - ORD
2 stops17h 08mDelta
Mon 5/57:55 pmORD - OSL
2 stops15h 55mDelta
Deal found 2/19$595
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/61:00 pmOSL - ORD
2 stops29h 25mLufthansa
Wed 8/1310:30 pmORD - OSL
1 stop18h 20mLufthansa
Deal found 2/19$677
This KAYAK deal was found by Cheapflights users on 2/19. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/43:00 pmOSL - ORD
1 stop30h 15mIberia
Sun 12/214:45 pmORD - OSL
1 stop14h 35mIberia
Deal found 2/19$686
This Aeromexico deal was found by Cheapflights users on 2/19. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/308:25 amOSL - ORD
1 stop13h 35mAir France
Sat 8/306:10 pmORD - OSL
2 stops39h 30mAir France
Deal found 2/19$746
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/143:00 pmOSL - ORD
1 stop29h 20mAustrian Airlines
Wed 4/306:05 pmORD - OSL
2 stops17h 40mAustrian Airlines
Deal found 2/19$754

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 February 20, 2025.

Fly from

Oslo

Fly to

Illinois

Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 4/14

1:10 pm-5:50 pm

1 stop11h 40m

Chicago O'Hare Intl

Wed 4/30

5:45 pm-11:30 pm

1 stop22h 45m

$356

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 4/14

4:20 pm-6:20 pm

1 stop33h 00m

Chicago O'Hare Intl

Wed 4/30

10:15 pm-12:35 pm

1 stop31h 20m

$372

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 3/6

11:40 am-6:45 pm

1 stop14h 05m

Chicago O'Hare Intl

Mon 3/10

4:27 pm-8:05 am

2 stops33h 38m

$400

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Tue 4/29

1:10 pm-5:50 pm

1 stop11h 40m

Chicago O'Hare Intl

Wed 5/7

8:06 am-10:40 am

2 stops19h 34m

$410

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 3/6

7:00 am-7:14 am

2 stops31h 14m

Chicago O'Hare Intl

Mon 3/10

6:50 pm-10:40 pm

2 stops21h 50m

$427

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 4/14

7:15 am-6:15 pm

1 stop18h 00m

Chicago O'Hare Intl

Wed 4/23

4:15 pm-10:10 pm

2 stops22h 55m

$462

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

Thu 3/6

1:05 pm-5:50 pm

1 stop11h 45m

Chicago O'Hare Intl

Mon 3/10

10:35 am-12:35 pm

2 stops20h 00m

$591

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 4/28

6:00 am-4:08 pm

2 stops17h 08m

Chicago O'Hare Intl

Mon 5/5

7:55 pm-6:50 pm

2 stops15h 55m

$595

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 4/14

3:00 pm-1:20 pm

1 stop29h 20m

Chicago O'Hare Intl

Wed 4/30

6:05 pm-6:45 pm

2 stops17h 40m

$754

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Mon 4/28

6:00 am-6:20 pm

2 stops19h 20m

Chicago Midway

Mon 5/5

6:45 pm-4:20 pm

2 stops14h 35m

$811

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 33 results
1
2
3
4

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 $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 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 February 20, 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 February 20, 2025.
Get a feel of what it's like to fly with Delta, LOT 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
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

LOT
7.6
Good
1,080 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Austrian Airlines
7.6
Good
773 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

United Airlines
7.4
Good
8,765 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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 $393 on British Airways. Other airlines that offer cheap prices include Icelandair from $436 and LOT from $462 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 $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

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.

Alternative routes for Oslo to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Oslo Gardermoen to Newark flights
Oslo Gardermoen to John F Kennedy Intl flights
Oslo Gardermoen to LaGuardia flights
Oslo Gardermoen to Stewart flights
Oslo Gardermoen to Miami flights
Oslo Gardermoen to Fort Lauderdale flights
Sandefjord to John F Kennedy Intl flights
Oslo Gardermoen to West Palm Beach flights
Oslo Gardermoen to Orlando flights
Oslo Gardermoen to Los Angeles flights
Oslo Gardermoen to San Francisco flights
Oslo Gardermoen to O'Hare Intl flights
Oslo Gardermoen to Dallas/Fort Worth flights
Oslo Gardermoen to Hobby flights
Sandefjord to Los Angeles flights
Oslo Gardermoen to Las Vegas flights
Bergen to Newark flights
Oslo Gardermoen to Dulles Intl flights
Bergen to John F Kennedy Intl flights
Oslo Gardermoen to Seattle flights
Oslo Gardermoen to Baltimore flights
Sandefjord to Newark flights
Oslo Gardermoen to Minneapolis flights
Oslo Gardermoen to Reagan-National flights
Sandefjord to San Francisco flights
Oslo Gardermoen to Nashville flights
Oslo Gardermoen to San Diego flights
Oslo Gardermoen to George Bush Intcntl flights
Stavanger to Newark flights
Stavanger to John F Kennedy Intl flights
Sandefjord to Seattle flights
Oslo Gardermoen to Tampa flights
Oslo Gardermoen to Honolulu flights
Bergen to Miami flights
Sandefjord to Las Vegas flights
Oslo Gardermoen to Denver flights
Bergen to Fort Lauderdale flights
Bergen to Las Vegas flights
Sandefjord to Dulles Intl flights
Oslo Gardermoen to Detroit flights
Oslo Gardermoen to San Jose flights

Top 4 airlines flying from Oslo to Illinois

Discover the top 4 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$370Average$664FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$416Average$578FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$424Average$490FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$462Average$573FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.