What is the cheapest airline that flies from Oslo to Illinois?

Finnair, Delta, and KLM are the most popular carriers operating from Oslo to Illinois

When did momondo last update prices for flights from Oslo to Illinois?

Prices for flights from Oslo to Illinois are updated daily.

How many operators does momondo search for flights from Oslo to Illinois?

The number of operators available for flights from Oslo to Illinois is 1 as of December 2025.

How old do you have to be to fly from Oslo to Illinois?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Oslo to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$306 Cheap Flights from Oslo to Illinois in 2025/26

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Find the cheapest flights from Oslo to Illinois

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:30 pm - 5:20 pm

OSL

ORD

26h 50m1 stop

6:30 pm - 11:35 am

ORD

OSL

10h 05m1 stop

$386Icelandair

Sun, Jan 25 - Sat, Feb 7

5:55 am - 4:55 pm

OSL

ORD

18h 00m1 stop

7:20 pm - 12:20 am

ORD

OSL

22h 00m1 stop

$388Scandinavian Airlines

Sun, Jan 25 - Sat, Feb 7

10:00 am - 4:55 pm

OSL

ORD

13h 55m1 stop

7:20 pm - 5:20 pm

ORD

OSL

15h 00m1 stop

$389Scandinavian Airlines

Sun, Jan 25 - Sat, Feb 7

1:10 pm - 5:20 pm

OSL

ORD

11h 10m1 stop

6:30 pm - 8:35 pm

ORD

OSL

19h 05m1 stop

$394Icelandair

Sat, Jan 17 - Sat, Jan 24

7:00 pm - 2:20 pm

OSL

ORD

26h 20m1 stop

4:25 pm - 11:50 am

ORD

OSL

12h 25m1 stop

$481KLM

Sun, Jan 25 - Sat, Feb 7

6:30 am - 6:36 pm

OSL

MDW

19h 06m2 stops

1:26 pm - 8:40 am

MDW

OSL

12h 14m2 stops

$497Delta

Sun, Jan 25 - Sat, Feb 7

6:30 am - 4:16 pm

OSL

MDW

16h 46m2 stops

1:26 pm - 8:40 am

MDW

OSL

12h 14m2 stops

$501KLM

Sat, Jan 17 - Sat, Jan 24

6:30 am - 5:55 pm

OSL

MDW

18h 25m2 stops

1:26 pm - 8:40 am

MDW

OSL

12h 14m2 stops

$511Delta

Sun, Jan 25 - Sat, Feb 7

6:05 am - 1:55 pm

OSL

STL

14h 50m1 stop

6:35 pm - 5:40 pm

STL

OSL

16h 05m2 stops

$1,255Lufthansa

Sun, Dec 21 - Thu, Dec 25

6:15 pm - 1:55 pm

OSL

STL

26h 40m1 stop

1:05 pm - 11:40 pm

STL

OSL

27h 35m2 stops

$1,502Lufthansa

Tue, Dec 23 - Sat, Dec 27

Icelandair flights from Oslo to Illinois

Our best Icelandair deals on Oslo to Illinois flight tickets

Icelandair

Jan 25

OSL9:30 pmOslo Gardermoen

26h 50m

1 stop

ORD5:20 pmChicago O'Hare Intl

Feb 7

ORD6:30 pmChicago O'Hare Intl

10h 05m

1 stop

OSL11:35 amOslo Gardermoen

$386

Find similar

Icelandair

Jan 17

OSL1:10 pmOslo Gardermoen

11h 10m

1 stop

ORD5:20 pmChicago O'Hare Intl

Jan 24

ORD6:30 pmChicago O'Hare Intl

19h 05m

1 stop

OSL8:35 pmOslo Gardermoen

$394

Find similar

Icelandair

Mar 12

OSL1:10 pmOslo Gardermoen

11h 10m

1 stop

ORD6:20 pmChicago O'Hare Intl

Mar 29

ORD7:25 pmChicago O'Hare Intl

10h 10m

1 stop

OSL12:35 pmOslo Gardermoen

$417

Find similar

KLM flights from Oslo to Illinois

Our best KLM deals on Oslo to Illinois flight tickets

KLM

Jan 25

OSL7:00 pmOslo Gardermoen

26h 20m

1 stop

ORD2:20 pmChicago O'Hare Intl

Feb 7

ORD4:25 pmChicago O'Hare Intl

12h 25m

1 stop

OSL11:50 amOslo Gardermoen

$481

Find similar

KLM

Jan 21

OSL12:40 pmOslo Gardermoen

16h 49m

2 stops

ORD10:29 pmChicago O'Hare Intl

Jan 28

ORD4:25 pmChicago O'Hare Intl

16h 50m

1 stop

OSL4:15 pmOslo Gardermoen

$496

Find similar

KLM

Jan 17

OSL6:30 amOslo Gardermoen

16h 46m

2 stops

MDW4:16 pmChicago Midway

Jan 24

MDW1:26 pmChicago Midway

12h 14m

2 stops

OSL8:40 amOslo Gardermoen

$501

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sun 1/25

9:30 pm-5:20 pm

1 stop26h 50m

Chicago O'Hare Intl

Sat 2/7

6:30 pm-11:35 am

1 stop10h 05m

$386

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sun 1/25

5:55 am-4:55 pm

1 stop18h 00m

Chicago O'Hare Intl

Sat 2/7

7:20 pm-12:20 am

1 stop22h 00m

$388

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sun 1/25

10:00 am-4:55 pm

1 stop13h 55m

Chicago O'Hare Intl

Sat 2/7

7:20 pm-5:20 pm

1 stop15h 00m

$389

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sat 1/17

1:10 pm-5:20 pm

1 stop11h 10m

Chicago O'Hare Intl

Sat 1/24

6:30 pm-8:35 pm

1 stop19h 05m

$394

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sun 1/25

7:00 pm-2:20 pm

1 stop26h 20m

Chicago O'Hare Intl

Sat 2/7

4:25 pm-11:50 am

1 stop12h 25m

$481

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Sun 1/25

6:30 am-6:36 pm

2 stops19h 06m

Chicago Midway

Sat 2/7

1:26 pm-8:40 am

2 stops12h 14m

$497

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Sat 1/17

6:30 am-4:16 pm

2 stops16h 46m

Chicago Midway

Sat 1/24

1:26 pm-8:40 am

2 stops12h 14m

$501

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Sun 1/25

6:30 am-5:55 pm

2 stops18h 25m

Chicago Midway

Sat 2/7

1:26 pm-8:40 am

2 stops12h 14m

$511

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Sun 12/21

6:05 am-1:55 pm

1 stop14h 50m

Lambert-St Louis

Thu 12/25

6:35 pm-5:40 pm

2 stops16h 05m

$1,255

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Tue 12/23

6:15 pm-1:55 pm

1 stop26h 40m

Lambert-St Louis

Sat 12/27

1:05 pm-11:40 pm

2 stops27h 35m

$1,502

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Oslo to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Oslo is in September. Flight prices, which tend to average around $445, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $462.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Oslo to Illinois is on a Thursday when prices can be found for as low as $467. Flights from Oslo to Illinois on a Saturday will generally be more expensive and average around $583. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Oslo to Illinois during this time can be as low as $491. Flights in the afternoon are often more expensive with an average ticket price of $662.

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Oslo when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $563 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Oslo for as low as $400 on momondo.

Cheap Oslo to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Oslo to Illinois

Fastest flight time	11h 10m
Direct flights	None

The fastest flight from Oslo to Illinois takes 11h 10m

There are no direct flights from Oslo to Illinois. There are no popular flight routes from Oslo to Illinois.

Search flight deals

When did momondo last update prices for flights from Oslo to Illinois?
Prices for flights from Oslo to Illinois are updated daily.
How many operators does momondo search for flights from Oslo to Illinois?
The number of operators available for flights from Oslo to Illinois is 1 as of December 2025.
How old do you have to be to fly from Oslo to Illinois?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Oslo to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Oslo to Illinois

Compare and see reviews for airlines that fly from Oslo to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Scandinavian Airlines	PriceFrom $521	Free Cancellation	Rating 7.4 1,596 reviews		Search Scandinavian Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Oslo to Illinois?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Oslo.

Can I find flights from Oslo to Illinois with flexible booking policies on momondo?

Flights from Oslo to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Oslo to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Oslo. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Oslo to Illinois right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Oslo to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.