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

KLM, Delta, and Finnair 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 September 2026.

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.

$430 Cheap Flights from Oslo to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Oslo to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 pm - 6:15 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

32h 45m1 stop Reykjavik Keflavik Intl

7:30 pm - 11:35 amORD Chicago O'Hare Intl-OSL Oslo Gardermoen

10h 05m1 stop Reykjavik Keflavik Intl

$509Icelandair

Mon, Oct 12 - Sun, Oct 25

1:10 pm - 5:20 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

11h 10m1 stop Reykjavik Keflavik Intl

6:30 pm - 8:35 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

19h 05m1 stop Reykjavik Keflavik Intl

$511Icelandair

Wed, Nov 18 - Wed, Nov 25

4:30 pm - 6:15 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

32h 45m1 stop Reykjavik Keflavik Intl

7:30 pm - 11:35 amORD Chicago O'Hare Intl-OSL Oslo Gardermoen

10h 05m1 stop Reykjavik Keflavik Intl

$511Icelandair

Mon, Oct 12 - Sun, Oct 25

4:30 pm - 6:15 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

32h 45m1 stop Reykjavik Keflavik Intl

7:30 pm - 2:25 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

12h 55m1 stop Reykjavik Keflavik Intl

$513Icelandair

Mon, Oct 12 - Sun, Oct 25

4:30 pm - 6:15 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

32h 45m1 stop Reykjavik Keflavik Intl

7:30 pm - 11:35 amORD Chicago O'Hare Intl-OSL Oslo Gardermoen

10h 05m1 stop Reykjavik Keflavik Intl

$515Icelandair

Mon, Oct 12 - Sun, Oct 25

4:30 pm - 6:15 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

32h 45m1 stop Reykjavik Keflavik Intl

7:30 pm - 11:35 amORD Chicago O'Hare Intl-OSL Oslo Gardermoen

10h 05m1 stop Reykjavik Keflavik Intl

$519Icelandair

Mon, Oct 12 - Sun, Oct 25

5:05 pm - 3:25 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

28h 20m1 stop Amsterdam Schiphol

6:25 pm - 4:10 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

14h 45m1 stop Paris Charles de Gaulle

$526Multiple Airlines

Fri, Oct 30 - Sun, Nov 15

12:30 pm - 10:30 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

17h 00m2 stops Helsinki-Vantaa New York John F Kennedy Intl

4:31 pm - 4:35 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

17h 04m2 stops New York John F Kennedy Intl Helsinki-Vantaa

$528Finnair

Mon, Nov 2 - Sun, Nov 15

6:00 am - 4:45 pmTRF Oslo Sandefjord-ORD Chicago O'Hare Intl

17h 45m1 stop Kastrup Copenhagen

7:15 pm - 2:05 pmORD Chicago O'Hare Intl-TRF Oslo Sandefjord

11h 50m1 stop Kastrup Copenhagen

$584Scandinavian Airlines

Mon, Nov 2 - Sun, Nov 15

6:00 am - 4:45 pmTRF Oslo Sandefjord-ORD Chicago O'Hare Intl

17h 45m1 stop Kastrup Copenhagen

7:15 pm - 2:05 pmORD Chicago O'Hare Intl-TRF Oslo Sandefjord

11h 50m1 stop Kastrup Copenhagen

$585Scandinavian Airlines

Wed, Nov 18 - Wed, Nov 25

Cheap last minute flights

Enter your travel dates to find the best prices.

1:50 pm - 6:15 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

11h 25m1 stop Reykjavik Keflavik Intl

7:25 pm - 12:35 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

10h 10m1 stop Reykjavik Keflavik Intl

$2,918Icelandair

Fri, Sep 18 - Sun, Sep 27

4:30 pm - 7:13 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

57h 43m2 stops Reykjavik Keflavik Intl Minneapolis St Paul

7:25 pm - 12:45 amORD Chicago O'Hare Intl-OSL Oslo Gardermoen

22h 20m1 stop Reykjavik Keflavik Intl

$3,109Multiple Airlines

Fri, Sep 18 - Mon, Sep 28

4:30 pm - 7:13 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

57h 43m2 stops Reykjavik Keflavik Intl Minneapolis St Paul

10:25 pm - 3:25 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

10h 00m1 stop Reykjavik Keflavik Intl

$3,112Multiple Airlines

Fri, Sep 18 - Sun, Sep 27

4:30 pm - 9:25 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

11h 55m1 stop Reykjavik Keflavik Intl

7:25 pm - 12:35 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

10h 10m1 stop Reykjavik Keflavik Intl

$3,234Icelandair

Fri, Sep 18 - Mon, Sep 28

4:30 pm - 7:13 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

57h 43m2 stops Reykjavik Keflavik Intl Minneapolis St Paul

7:25 pm - 10:50 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

20h 25m1 stop Reykjavik Keflavik Intl

$3,477Multiple Airlines

Fri, Sep 18 - Tue, Sep 29

4:30 pm - 9:25 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

11h 55m1 stop Reykjavik Keflavik Intl

7:25 pm - 12:35 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

10h 10m1 stop Reykjavik Keflavik Intl

$3,716Icelandair

Fri, Sep 18 - Tue, Sep 29

6:00 am - 4:10 pmTRF Oslo Sandefjord-ORD Chicago O'Hare Intl

17h 10m1 stop Kastrup Copenhagen

7:15 pm - 12:25 amORD Chicago O'Hare Intl-TRF Oslo Sandefjord

22h 10m1 stop Kastrup Copenhagen

$4,563Scandinavian Airlines

Sat, Sep 19 - Mon, Sep 28

9:55 am - 4:58 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

38h 03m2 stops Frankfurt am Main Toronto Pearson Intl

2:20 pm - 5:15 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

19h 55m2 stops Toronto Pearson Intl Brussels Bruxelles-National

$4,980Air Canada

Fri, Sep 18 - Sun, Sep 27

6:30 am - 2:15 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

14h 45m2 stops Paris Charles de Gaulle Amsterdam Schiphol

5:10 pm - 1:40 pmORD Chicago O'Hare Intl-OSL Oslo Gardermoen

13h 30m2 stops Paris Charles de Gaulle Amsterdam Schiphol

$5,246Multiple Airlines

Fri, Sep 18 - Tue, Sep 29

6:30 am - 2:15 pmOSL Oslo Gardermoen-ORD Chicago O'Hare Intl

14h 45m2 stops Paris Charles de Gaulle Amsterdam Schiphol

12:29 pm - 8:45 amORD Chicago O'Hare Intl-OSL Oslo Gardermoen

13h 16m2 stops Minneapolis St Paul Amsterdam Schiphol

$6,119Multiple Airlines

Fri, Sep 18 - Mon, Sep 28

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

American Airlines flights from Oslo to Illinois

Our best American Airlines deals on Oslo to Illinois flight tickets

American Airlines

Dec 3

OSL6:55 amOslo Gardermoen

15h 35m

1 stop

ORD3:30 pmChicago O'Hare Intl

Dec 6

ORD1:37 pmChicago O'Hare Intl

17h 08m

2 stops

OSL1:45 pmOslo Gardermoen

$601

American Airlines

Nov 13

OSL11:40 amOslo Gardermoen

14h 50m

1 stop

ORD7:30 pmChicago O'Hare Intl

Nov 18

ORD1:37 pmChicago O'Hare Intl

17h 33m

2 stops

OSL2:10 pmOslo Gardermoen

$602

American Airlines

Dec 3

OSL6:55 amOslo Gardermoen

17h 45m

2 stops

ORD5:40 pmChicago O'Hare Intl

Dec 6

ORD3:21 pmChicago O'Hare Intl

15h 24m

2 stops

OSL1:45 pmOslo Gardermoen

$607

Icelandair flights from Oslo to Illinois

Our best Icelandair deals on Oslo to Illinois flight tickets

Icelandair

Oct 12

OSL4:30 pmOslo Gardermoen

32h 45m

1 stop

ORD6:15 pmChicago O'Hare Intl

Oct 25

ORD7:30 pmChicago O'Hare Intl

10h 05m

1 stop

OSL11:35 amOslo Gardermoen

$509

Icelandair

Oct 12

OSL4:30 pmOslo Gardermoen

32h 45m

1 stop

ORD6:15 pmChicago O'Hare Intl

Oct 25

ORD7:30 pmChicago O'Hare Intl

10h 05m

1 stop

OSL11:35 amOslo Gardermoen

$511

Icelandair

Oct 12

OSL4:30 pmOslo Gardermoen

32h 45m

1 stop

ORD6:15 pmChicago O'Hare Intl

Oct 25

ORD7:30 pmChicago O'Hare Intl

12h 55m

1 stop

OSL2:25 pmOslo Gardermoen

$513

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloChicago

OSL Oslo Gardermoen - ORD Chicago O'Hare Intl

OSLORD

Oslo Gardermoen

Mon 10/12

4:30 pm-6:15 pm

1 stop32h 45m

Chicago O'Hare Intl

Sun 10/25

7:30 pm-11:35 am

1 stop10h 05m

$509

OsloChicago

OSL Oslo Gardermoen - ORD Chicago O'Hare Intl

OSLORD

Oslo Gardermoen

Wed 11/18

1:10 pm-5:20 pm

1 stop11h 10m

Chicago O'Hare Intl

Wed 11/25

6:30 pm-8:35 pm

1 stop19h 05m

$511

OsloChicago

OSL Oslo Gardermoen - ORD Chicago O'Hare Intl

OSLORD

Oslo Gardermoen

Mon 10/12

4:30 pm-6:15 pm

1 stop32h 45m

Chicago O'Hare Intl

Sun 10/25

7:30 pm-11:35 am

1 stop10h 05m

$511

OsloChicago

OSL Oslo Gardermoen - ORD Chicago O'Hare Intl

OSLORD

Oslo Gardermoen

Mon 10/12

4:30 pm-6:15 pm

1 stop32h 45m

Chicago O'Hare Intl

Sun 10/25

7:30 pm-2:25 pm

1 stop12h 55m

$513

OsloChicago

OSL Oslo Gardermoen - ORD Chicago O'Hare Intl

OSLORD

Oslo Gardermoen

Mon 10/12

4:30 pm-6:15 pm

1 stop32h 45m

Chicago O'Hare Intl

Sun 10/25

7:30 pm-11:35 am

1 stop10h 05m

$515

OsloChicago

OSL Oslo Gardermoen - ORD Chicago O'Hare Intl

OSLORD

Oslo Gardermoen

Mon 10/12

4:30 pm-6:15 pm

1 stop32h 45m

Chicago O'Hare Intl

Sun 10/25

7:30 pm-11:35 am

1 stop10h 05m

$519

OsloChicago

OSL Oslo Gardermoen - ORD Chicago O'Hare Intl

OSLORD

Oslo Gardermoen

Fri 10/30

5:05 pm-3:25 pm

1 stop28h 20m

Chicago O'Hare Intl

Sun 11/15

6:25 pm-4:10 pm

1 stop14h 45m

$526

OsloChicago

OSL Oslo Gardermoen - ORD Chicago O'Hare Intl

OSLORD

Oslo Gardermoen

Mon 11/2

12:30 pm-10:30 pm

2 stops17h 00m

Chicago O'Hare Intl

Sun 11/15

4:31 pm-4:35 pm

2 stops17h 04m

$528

Quickest round-trip

OsloChicago

TRF Oslo Sandefjord - ORD Chicago O'Hare Intl

TRFORD

Oslo Sandefjord

Mon 11/2

6:00 am-4:45 pm

1 stop17h 45m

Chicago O'Hare Intl

Sun 11/15

7:15 pm-2:05 pm

1 stop11h 50m

$584

OsloChicago

TRF Oslo Sandefjord - ORD Chicago O'Hare Intl

TRFORD

Oslo Sandefjord

Wed 11/18

6:00 am-4:45 pm

1 stop17h 45m

Chicago O'Hare Intl

Wed 11/25

7:15 pm-2:05 pm

1 stop11h 50m

$585

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 January. Flight prices, which tend to average around $477, 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 January, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $485.

How far in advance should I book a flight from Oslo 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 $608 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 $407 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

Best Price Found	$430
Fastest flight time	11h 25m
Direct flights	None

The best one-way flight to Illinois from Oslo in the past 72 hours is $430. The best round-trip flight deal from Oslo to Illinois found on momondo in the last 72 hours is $509.

The fastest flight from Oslo to Illinois takes 11h 25m

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

Search flight deals

Frequently asked questions about flying 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 September 2026.
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 $614	Free Cancellation	Rating 7.4 1,986 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.