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$276+ Cheap flights from Oslo Gardermoen (OSL) 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
abr. 5 — abr. 121
sáb. 4/5
sáb. 4/12
1 adult, Economy
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Cheap flight deals from Oslo Gardermoen to Illinois

Keep the following information in mind while searching for Oslo Gardermoen to Illinois flight deals. Data was last updated marzo 31, 2025.

Round-trip from

$426
(American Airlines)

One-way from

$276
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$487
From Oslo Gardermoen to Illinois
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One-way flight from Oslo Gardermoen to Illinois
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Highest demand for flights based on searches. 14% potential increase in price ($86 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Oslo Gardermoen to Illinois

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

This American Airlines deal was found by Cheapflights users on 3/30. 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.
mar. 4/291:10 pmOSL - ORD
1 stop11h 40mAmerican Airlines
mar. 5/611:45 amORD - OSL
2 stops15h 50mAmerican Airlines
Deal found 3/30$426
This Icelandair deal was found by Cheapflights users on 3/30. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/261:50 pmOSL - ORD
1 stop11h 25mIcelandair
dom. 5/410:15 pmORD - OSL
1 stop31h 20mIcelandair
Deal found 3/30$428
This Delta deal was found by Cheapflights users on 3/31. 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.
lun. 4/216:30 amOSL - ORD
1 stop14h 40mDelta
mié. 5/75:15 pmORD - OSL
2 stops13h 30mDelta
Deal found 3/31$431
This Air France deal was found by Cheapflights users on 3/30. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/286:30 amOSL - ORD
1 stop14h 40mMultiple Airlines
mar. 5/65:10 pmORD - OSL
1 stop16h 30mMultiple Airlines
Deal found 3/30$434
This KLM deal was found by Cheapflights users on 3/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/122:15 pmOSL - ORD
1 stop30h 55mKLM
mié. 6/254:20 pmORD - OSL
1 stop24h 05mKLM
Deal found 3/30$439
This Delta deal was found by Cheapflights users on 3/31. 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.
lun. 4/216:30 amOSL - MDW
2 stops18h 50mDelta
mié. 5/76:25 pmMDW - OSL
2 stops15h 15mDelta
Deal found 3/31$441
This Finnair deal was found by Cheapflights users on 3/30. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/288:35 amOSL - ORD
1 stop16h 15mFinnair
vie. 5/99:30 pmORD - OSL
1 stop12h 05mFinnair
Deal found 3/30$454
This Air France deal was found by Cheapflights users on 3/30. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/296:05 amOSL - ORD
2 stops15h 05mAir France
lun. 5/55:10 pmORD - OSL
1 stop23h 10mAir France
Deal found 3/30$460
This British Airways deal was found by Cheapflights users on 3/29. 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.
mié. 6/185:05 pmOSL - ORD
2 stops28h 10mBritish Airways
mar. 6/244:59 pmORD - OSL
2 stops23h 26mBritish Airways
Deal found 3/29$467
This United Airlines deal was found by Cheapflights users on 3/30. 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.
sáb. 4/266:35 amOSL - ORD
1 stop15h 10mUnited Airlines
dom. 5/48:50 amORD - OSL
2 stops17h 05mUnited Airlines
Deal found 3/30$480
This Scandinavian Airlines deal was found by Cheapflights users on 3/30. 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.
lun. 8/118:55 pmOSL - ORD
1 stop26h 15mScandinavian Airlines
jue. 8/217:15 pmORD - OSL
1 stop21h 55mScandinavian Airlines
Deal found 3/30$489
This Flysmarter deal was found by Cheapflights users on 3/31. 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.
lun. 4/217:15 amOSL - ORD
1 stop13h 40mAir Canada
mié. 5/75:50 pmORD - OSL
1 stop16h 25mAir Canada
Deal found 3/31$503

Cheapflights Fare Finder

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

Fly from

Oslo Gardermoen

Fly to

Illinois

Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 4/29

1:10 pm-5:50 pm

1 stop11h 40m

Chicago O'Hare Intl

mar. 5/6

11:45 am-10:35 am

2 stops15h 50m

$426

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

sáb. 4/26

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

dom. 5/4

10:15 pm-12:35 pm

1 stop31h 20m

$428

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

lun. 4/21

6:30 am-2:10 pm

1 stop14h 40m

Chicago O'Hare Intl

mié. 5/7

5:15 pm-1:45 pm

2 stops13h 30m

$431

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

lun. 4/28

6:30 am-2:10 pm

1 stop14h 40m

Chicago O'Hare Intl

mar. 5/6

5:10 pm-4:40 pm

1 stop16h 30m

$434

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

lun. 4/21

6:30 am-6:20 pm

2 stops18h 50m

Chicago Midway

mié. 5/7

6:25 pm-4:40 pm

2 stops15h 15m

$441

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

lun. 6/16

6:30 am-2:10 pm

1 stop14h 40m

Chicago O'Hare Intl

jue. 6/26

4:20 pm-10:35 pm

1 stop23h 15m

$452

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

lun. 4/28

8:35 am-5:50 pm

1 stop16h 15m

Chicago O'Hare Intl

vie. 5/9

9:30 pm-4:35 pm

1 stop12h 05m

$454

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 4/29

6:05 am-2:10 pm

2 stops15h 05m

Chicago O'Hare Intl

lun. 5/5

5:10 pm-11:20 pm

1 stop23h 10m

$460

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mié. 6/18

5:05 pm-2:15 pm

2 stops28h 10m

Chicago O'Hare Intl

mar. 6/24

4:59 pm-11:25 pm

2 stops23h 26m

$467

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

sáb. 4/26

6:35 am-2:45 pm

1 stop15h 10m

Chicago O'Hare Intl

dom. 5/4

8:50 am-8:55 am

2 stops17h 05m

$480

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 39 results
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Best time to book a flight from Oslo Gardermoen to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Oslo Gardermoen 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 Gardermoen Airport to Illinois

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

Currently, August is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Illinois (average of $245). Flying from Oslo Gardermoen Airport to Illinois in March is currently the most expensive (average of $323). 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 Gardermoen 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 marzo 31, 2025.

When flying from Oslo Gardermoen Airport 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 marzo 31, 2025.
Get a feel of what it's like to fly with Delta, KLM and LOT from Oslo to Illinois by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

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
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

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
1,065 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

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
1,267 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

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
770 reviews
Delta
8.0
Very good
7,899 reviews

Food

7.3

Overall

8.0

Entertainment

7.9

Comfort

8.0

Crew

8.5

Boarding

8.2

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 Gardermoen 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 Gardermoen Airport to Illinois one-way?

    $361 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 Scandinavian Airlines and Icelandair, with prices starting from $433 and $466, respectively.

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

    Most travelers choose Oslo Gardermoen - Chicago O'Hare Intl, Oslo Gardermoen - Chicago Midway or Oslo Gardermoen - Lambert-St Louis when deciding on the best route from Oslo Gardermoen Airport to Illinois.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Illinois (average of $245). Flying from Oslo Gardermoen Airport to Illinois in March is currently the most expensive (average of $323). 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 Gardermoen to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Oslo Gardermoen to Stewart flights
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Sandefjord to John F Kennedy Intl flights
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Sandefjord to Los Angeles flights
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Oslo Gardermoen to Reagan-National flights
Oslo Gardermoen to Oakland flights
Sandefjord to San Francisco flights
Oslo Gardermoen to George Bush Intcntl flights
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Sandefjord to Newark flights
Oslo Gardermoen to San Jose flights
Sandefjord to Dulles Intl flights
Sandefjord to Boston flights
Oslo Gardermoen to Portland flights
Oslo Gardermoen to San Diego flights
Oslo Gardermoen to Detroit flights
Oslo Gardermoen to Nashville flights
Sandefjord to Orlando flights
Oslo Gardermoen to Tampa flights
Oslo Gardermoen to Raleigh flights
Oslo Gardermoen to Honolulu flights
Oslo Gardermoen to Oklahoma City flights
Oslo Gardermoen to Denver flights
Oslo Gardermoen to Sky Harbor Intl flights
Oslo Gardermoen to Omaha flights

Top 4 airlines flying from Oslo Gardermoen to Illinois

Discover the top 4 airlines that operate flights from Oslo Gardermoen 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 marzo 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$416Average$512FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$462Average$573FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$463Average$664FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$507Average$659FlexibilityNo cancel feeOn-time76%
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