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$280+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — ORD
may. 4 — may. 111
dom. 5/4
dom. 5/11
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 abril 29, 2025.

Round-trip from

$431
(Flightnetwork)

One-way from

$280
(Mytrip)

Popular in

July

Cheapest in

November

Average price

$510
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 ($14 potential savings vs. average RT price).
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Average for round-trip flights in April 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 abril 29, 2025.

This Flightnetwork deal was found by Cheapflights users on 4/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/121:50 pmOSL - ORD
1 stop11h 25mIcelandair
mar. 5/2710:15 pmORD - OSL
1 stop10h 10mIcelandair
Deal found 4/28$431
This Ticket deal was found by Cheapflights users on 4/28. 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.
jue. 5/1511:40 amOSL - ORD
1 stop12h 20mMultiple Airlines
jue. 5/294:44 pmORD - OSL
2 stops16h 51mMultiple Airlines
Deal found 4/28$444
This Delta deal was found by Cheapflights users on 4/28. 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.
mar. 8/269:20 amOSL - ORD
1 stop11h 50mDelta
mar. 9/25:45 pmORD - OSL
2 stops15h 55mDelta
Deal found 4/28$452
This British Airways deal was found by Cheapflights users on 4/29. 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.
vie. 6/137:50 amOSL - ORD
1 stop17h 25mBritish Airways
vie. 6/207:15 pmORD - OSL
1 stop20h 15mBritish Airways
Deal found 4/29$456
This Delta deal was found by Cheapflights users on 4/28. 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.
mar. 8/269:20 amOSL - MDW
2 stops16h 08mDelta
mar. 9/25:59 pmMDW - OSL
2 stops15h 41mDelta
Deal found 4/28$457
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/157:45 amOSL - ORD
1 stop15h 10mAmerican Airlines
jue. 5/2910:25 pmORD - OSL
1 stop18h 30mAmerican Airlines
Deal found 4/29$466
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/1511:40 amOSL - ORD
1 stop12h 20mIberia
jue. 5/2910:25 pmORD - OSL
1 stop18h 30mIberia
Deal found 4/29$499
This Ovago deal was found by Cheapflights users on 4/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/245:20 pmOSL - ORD
2 stops25h 35mFinnair
mar. 7/89:15 pmORD - OSL
1 stop19h 10mFinnair
Deal found 4/27$514
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 5/156:45 amOSL - ORD
1 stop12h 15mBrussels Airlines
jue. 5/296:05 pmORD - OSL
2 stops16h 10mBrussels Airlines
Deal found 4/29$526
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/196:35 amOSL - ORD
2 stops23h 55mUnited Airlines
jue. 7/2410:50 amORD - OSL
2 stops15h 10mUnited Airlines
Deal found 4/29$539
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/86:55 amOSL - ORD
1 stop16h 15mScandinavian Airlines
sáb. 8/307:15 pmORD - OSL
1 stop14h 20mScandinavian Airlines
Deal found 4/29$548
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/126:45 amOSL - ORD
2 stops15h 20mAir Canada
mar. 5/273:50 pmORD - OSL
2 stops19h 15mAir Canada
Deal found 4/28$555

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 abril 29, 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

lun. 5/12

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

mar. 5/27

10:15 pm-3:25 pm

1 stop10h 10m

$431

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 5/15

11:40 am-5:00 pm

1 stop12h 20m

Chicago O'Hare Intl

jue. 5/29

4:44 pm-4:35 pm

2 stops16h 51m

$444

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 8/26

9:20 am-2:10 pm

1 stop11h 50m

Chicago O'Hare Intl

mar. 9/2

5:45 pm-4:40 pm

2 stops15h 55m

$452

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

vie. 6/13

7:50 am-6:15 pm

1 stop17h 25m

Chicago O'Hare Intl

vie. 6/20

7:15 pm-10:30 pm

1 stop20h 15m

$456

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

mar. 8/26

9:20 am-6:28 pm

2 stops16h 08m

Chicago Midway

mar. 9/2

5:59 pm-4:40 pm

2 stops15h 41m

$457

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 5/15

7:45 am-3:55 pm

1 stop15h 10m

Chicago O'Hare Intl

jue. 5/29

10:25 pm-11:55 pm

1 stop18h 30m

$466

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 5/15

11:40 am-5:00 pm

1 stop12h 20m

Chicago O'Hare Intl

jue. 5/29

10:25 pm-11:55 pm

1 stop18h 30m

$499

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 6/24

5:20 pm-11:55 am

2 stops25h 35m

Chicago O'Hare Intl

mar. 7/8

9:15 pm-11:25 pm

1 stop19h 10m

$514

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 5/15

6:45 am-12:00 pm

1 stop12h 15m

Chicago O'Hare Intl

jue. 5/29

6:05 pm-5:15 pm

2 stops16h 10m

$526

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

sáb. 7/19

6:35 am-11:30 pm

2 stops23h 55m

Chicago O'Hare Intl

jue. 7/24

10:50 am-9:00 am

2 stops15h 10m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 33 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 $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 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 abril 29, 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 abril 29, 2025.
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
1,069 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
1,273 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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
780 reviews
Delta
8.0
Very good
7,936 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

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?

    $440 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 Icelandair and LOT, with prices starting from $448 and $499, 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 $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

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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 LaGuardia flights
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Sandefjord to John F Kennedy Intl flights
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Oslo Gardermoen to O'Hare Intl flights
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Oslo Gardermoen to Los Angeles flights
Oslo Gardermoen to Minneapolis flights
Sandefjord to Los Angeles flights
Oslo Gardermoen to Dallas/Fort Worth flights
Oslo Gardermoen to San Francisco flights
Oslo Gardermoen to Dulles Intl flights
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Oslo Gardermoen to Las Vegas flights
Oslo Gardermoen to Baltimore flights
Sandefjord to Newark flights
Oslo Gardermoen to Boston flights
Oslo Gardermoen to Reagan-National flights
Sandefjord to San Francisco flights
Sandefjord to Seattle flights
Sandefjord to Dulles Intl flights
Oslo Gardermoen to San Diego flights
Oslo Gardermoen to Portland flights
Oslo Gardermoen to Detroit flights
Oslo Gardermoen to Austin flights
Oslo Gardermoen to Tampa flights
Oslo Gardermoen to Honolulu flights
Oslo Gardermoen to Salt Lake City flights
Oslo Gardermoen to Denver flights
Oslo Gardermoen to Omaha flights
Sandefjord to Boston flights
Sandefjord to Las Vegas flights
Oslo Gardermoen to Pensacola flights
Oslo Gardermoen to Sky Harbor Intl flights
Sandefjord to Orlando flights
Oslo Gardermoen to Jacksonville flights

Top 2 airlines flying from Oslo Gardermoen to Illinois

Discover the top 2 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 abril 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$416Average$512FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$507Average$745FlexibilityNo cancel feeOn-time76%

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