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$285+ 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 2/28. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — ORD
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
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 octubre 30, 2025.

Round-trip from

$352
(Ticket)

One-way from

$285
(Finnair)

Popular in

July

Cheapest in

September

Average price

$537
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. 12% potential increase in price ($76 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 October 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 octubre 30, 2025.

This Ticket deal was found by Cheapflights users on 10/30. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/1410:00 amOSL - ORD
1 stop13h 45mScandinavian Airlines
dom. 12/287:20 pmORD - OSL
1 stop15h 30mScandinavian Airlines
Deal found 10/30$352
This Flightnetwork deal was found by Cheapflights users on 10/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/55:55 amOSL - ORD
1 stop17h 50mScandinavian Airlines
dom. 12/77:20 pmORD - OSL
1 stop20h 10mScandinavian Airlines
Deal found 10/29$373
This Ticket deal was found by Cheapflights users on 10/30. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/111:10 pmOSL - ORD
1 stop11h 10mIcelandair
sáb. 11/156:30 pmORD - OSL
1 stop10h 05mIcelandair
Deal found 10/30$408
This Scandinavian Airlines deal was found by Cheapflights users on 10/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/45:55 amOSL - ORD
1 stop17h 50mScandinavian Airlines
lun. 12/87:20 pmORD - OSL
1 stop18h 00mScandinavian Airlines
Deal found 10/29$411
This Scandinavian Airlines deal was found by Cheapflights users on 10/29. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/213:00 pmOSL - ORD
1 stop32h 45mScandinavian Airlines
lun. 12/297:20 pmORD - OSL
1 stop15h 00mScandinavian Airlines
Deal found 10/29$412
This Travelis deal was found by Cheapflights users on 10/29. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/242:50 pmOSL - ORD
1 stop32h 55mScandinavian Airlines
dom. 1/47:20 pmORD - OSL
1 stop15h 00mScandinavian Airlines
Deal found 10/29$467
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/59:25 amOSL - ORD
1 stop11h 55mDelta
dom. 12/77:00 amORD - OSL
2 stops18h 40mDelta
Deal found 10/29$481
This Flysmarter deal was found by Cheapflights users on 10/29. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/56:15 amOSL - ORD
2 stops15h 40mAir Canada
dom. 12/712:50 pmORD - OSL
2 stops17h 15mAir Canada
Deal found 10/29$482
This Delta deal was found by Cheapflights users on 10/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/119:25 amOSL - ORD
2 stops18h 04mDelta
sáb. 11/1510:35 amORD - OSL
2 stops15h 05mDelta
Deal found 10/30$486
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/66:30 amOSL - MDW
2 stops18h 48mDelta
lun. 12/86:40 pmMDW - OSL
2 stops36h 10mDelta
Deal found 10/29$498
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2012:40 pmOSL - ORD
1 stop32h 40mDelta
mié. 12/35:20 pmORD - OSL
1 stop16h 00mDelta
Deal found 10/29$499
This Delta deal was found by Cheapflights users on 10/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/49:25 amOSL - ORD
2 stops16h 02mDelta
lun. 12/85:20 pmORD - OSL
1 stop16h 00mDelta
Deal found 10/29$504

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 octubre 30, 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

jue. 12/4

5:55 am-4:45 pm

1 stop17h 50m

Chicago O'Hare Intl

lun. 12/8

7:20 pm-8:20 pm

1 stop18h 00m

$411

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 12/23

9:05 pm-4:45 pm

1 stop26h 40m

Chicago O'Hare Intl

lun. 12/29

7:20 pm-9:20 am

1 stop31h 00m

$412

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 12/23

9:05 pm-4:45 pm

1 stop26h 40m

Chicago O'Hare Intl

mié. 12/31

7:20 pm-2:15 pm

1 stop11h 55m

$474

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 11/20

12:40 pm-2:20 pm

1 stop32h 40m

Chicago O'Hare Intl

mié. 12/3

5:20 pm-4:20 pm

1 stop16h 00m

$499

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 12/4

9:25 am-6:27 pm

2 stops16h 02m

Chicago O'Hare Intl

lun. 12/8

5:20 pm-4:20 pm

1 stop16h 00m

$504

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 3/31

6:45 am-2:50 pm

1 stop15h 05m

Chicago O'Hare Intl

mié. 7/29

10:00 am-5:15 pm

2 stops24h 15m

$517

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

jue. 2/26

7:05 am-7:30 pm

2 stops19h 25m

Lambert-St Louis

lun. 3/2

6:59 pm-10:40 pm

2 stops20h 41m

$519

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

vie. 11/14

6:30 am-4:33 pm

2 stops17h 03m

Lambert-St Louis

mar. 11/18

11:39 am-8:40 am

2 stops14h 01m

$519

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

vie. 3/6

6:15 am-3:20 pm

1 stop16h 05m

Chicago O'Hare Intl

vie. 3/27

2:00 pm-11:40 pm

2 stops27h 40m

$520

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

lun. 3/9

6:15 am-6:45 pm

2 stops18h 30m

Chicago O'Hare Intl

lun. 3/30

11:15 am-12:20 pm

2 stops18h 05m

$520

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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, November is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Illinois (average of $342). Flying from Oslo Gardermoen Airport to Illinois in July is currently the most expensive (average of $555). 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 octubre 30, 2025.

One of the essential ways to save on airfare from Oslo Gardermoen Airport to Illinois is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 18% on airfare.

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 octubre 30, 2025.
Read reviews from past customers who have flown Scandinavian Airlines, Icelandair, and Lufthansa from Oslo Gardermoen Airport to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Scandinavian Airlines
7.4
Good
1,548 reviews

Boarding

7.6

Crew

8.0

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

6.6

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Scandinavian Airlines
7.4
Good
1,548 reviews
Scandinavian Airlines
7.4
Good
1,548 reviews

Boarding

7.6

Crew

8.0

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

6.6

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Icelandair
7.1
Good
562 reviews
Scandinavian Airlines
7.4
Good
1,548 reviews

Boarding

7.6

Crew

8.0

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

6.6

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
Lufthansa
6.8
Okay
7,542 reviews
Scandinavian Airlines
7.4
Good
1,548 reviews

Boarding

7.6

Crew

8.0

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

6.6

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.
British Airways
6.7
Okay
7,488 reviews
Scandinavian Airlines
7.4
Good
1,548 reviews

Boarding

7.6

Crew

8.0

Overall

7.4

Food

6.6

Comfort

7.3

Entertainment

6.6

Reviews

1 / 20
8.0
Excellent

Scott,Sep 2025

CPH - LAX

Unfortunately, usual rubbish at the gate for SAS reporting that boarding is underway, but clearly that was not the case. Internet worked to start with, but at some point it wouldn't connect using any of the devices I had with me and remained that way for the rest of the trip; could not even blame being out of network coverage, for all of that, as surely it should work across continental USA - worked for so little of the flight for me that I wouldn't have advertised that such a service was actually available; if I had had to pay extra for internet, I would have been demanding that money back.

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.

  • How long is the flight from Oslo Gardermoen Airport to Illinois?

    There are many flights that can get you from Oslo Gardermoen Airport to Illinois in 17h 50m. Fly via Scandinavian Airlines, Delta, or American Airlines to get the fastest option. Airlines will cover a distance of 4039 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Oslo Gardermoen Airport to Illinois one-way?

    $293 is the cheapest one-way deal found within the past few days, from Finnair. You may also be able to find cheap deals on American Airlines and Scandinavian Airlines, with prices starting from $312 and $432, 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, November is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Illinois (average of $342). Flying from Oslo Gardermoen Airport to Illinois in July is currently the most expensive (average of $555). 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.

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Alternative routes for Oslo Gardermoen to Illinois

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Top airline flying from Oslo Gardermoen to Illinois

Discover the top airline 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$521Average$620FlexibilityNo cancel feeOn-time77%

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