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 July 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.

$350 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

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 5:45 pm

TRF

ORD

17h 45m

1 stop

7:15 pm - 2:05 pm

ORD

TRF

11h 50m

1 stop

$555Scandinavian Airlines

Wed, Oct 28 - Wed, Nov 4

12:50 pm - 5:50 pm

OSL

ORD

12h 00m

1 stop

8:50 pm - 4:20 pm

ORD

OSL

12h 30m

1 stop

$556American Airlines

Thu, Sep 10 - Thu, Sep 17

6:00 am - 5:45 pm

TRF

ORD

17h 45m

1 stop

7:15 pm - 2:05 pm

ORD

TRF

11h 50m

1 stop

$556Scandinavian Airlines

Thu, Oct 29 - Wed, Nov 4

12:50 pm - 5:50 pm

OSL

ORD

12h 00m

1 stop

8:50 pm - 11:20 pm

ORD

OSL

19h 30m

1 stop

$556American Airlines

Thu, Sep 3 - Tue, Sep 15

8:35 am - 5:50 pm

OSL

ORD

16h 15m

1 stop

9:30 pm - 7:45 pm

ORD

OSL

15h 15m

1 stop

$560Finnair

Thu, Sep 3 - Sat, Sep 19

12:50 pm - 5:50 pm

OSL

ORD

12h 00m

1 stop

1:35 pm - 10:55 am

ORD

OSL

14h 20m

2 stops

$560American Airlines

Thu, Sep 10 - Thu, Sep 17

12:50 pm - 5:50 pm

OSL

ORD

12h 00m

1 stop

5:00 pm - 11:30 pm

ORD

OSL

23h 30m

1 stop

$560Multiple Airlines

Thu, Sep 3 - Sat, Sep 19

12:50 pm - 5:50 pm

OSL

ORD

12h 00m

1 stop

1:35 pm - 10:45 am

ORD

OSL

14h 10m

2 stops

$561American Airlines

Thu, Sep 24 - Wed, Sep 30

12:50 pm - 5:50 pm

OSL

ORD

12h 00m

1 stop

1:35 pm - 10:40 am

ORD

OSL

14h 05m

2 stops

$561American Airlines

Thu, Sep 3 - Tue, Sep 15

8:35 am - 5:50 pm

OSL

ORD

16h 15m

1 stop

9:30 pm - 7:45 pm

ORD

OSL

15h 15m

1 stop

$564Finnair

Thu, Sep 3 - Sat, Sep 19

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American Airlines flights from Oslo to Illinois

Our best American Airlines deals on Oslo to Illinois flight tickets

American Airlines

Sep 3

OSL12:50 pmOslo Gardermoen

12h 00m

1 stop

ORD5:50 pmChicago O'Hare Intl

Sep 15

ORD8:50 pmChicago O'Hare Intl

19h 30m

1 stop

OSL11:20 pmOslo Gardermoen

$556

American Airlines

Sep 3

OSL12:50 pmOslo Gardermoen

12h 00m

1 stop

ORD5:50 pmChicago O'Hare Intl

Sep 15

ORD1:35 pmChicago O'Hare Intl

14h 05m

2 stops

OSL10:40 amOslo Gardermoen

$561

American Airlines

Nov 21

OSL12:30 pmOslo Gardermoen

16h 58m

2 stops

ORD10:28 pmChicago O'Hare Intl

Nov 29

ORD8:40 pmChicago O'Hare Intl

19h 00m

1 stop

OSL10:40 pmOslo Gardermoen

$566

Finnair flights from Oslo to Illinois

Our best Finnair deals on Oslo to Illinois flight tickets

Finnair

Sep 3

OSL8:35 amOslo Gardermoen

16h 15m

1 stop

ORD5:50 pmChicago O'Hare Intl

Sep 19

ORD9:30 pmChicago O'Hare Intl

15h 15m

1 stop

OSL7:45 pmOslo Gardermoen

$564

Finnair

Oct 29

OSL8:40 amOslo Gardermoen

16h 10m

1 stop

ORD6:50 pmChicago O'Hare Intl

Nov 4

ORD4:26 pmChicago O'Hare Intl

20h 39m

2 stops

OSL8:05 pmOslo Gardermoen

$565

Finnair

Sep 10

OSL8:30 pmOslo Gardermoen

25h 25m

2 stops

ORD2:55 pmChicago O'Hare Intl

Sep 17

ORD4:01 pmChicago O'Hare Intl

17h 34m

2 stops

OSL4:35 pmOslo Gardermoen

$592

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

Wed 10/28

6:00 am-5:45 pm

1 stop17h 45m

Chicago O'Hare Intl

Wed 11/4

7:15 pm-2:05 pm

1 stop11h 50m

$555

Quickest round-trip

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/10

12:50 pm-5:50 pm

1 stop12h 00m

Chicago O'Hare Intl

Thu 9/17

8:50 pm-4:20 pm

1 stop12h 30m

$556

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

Thu 10/29

6:00 am-5:45 pm

1 stop17h 45m

Chicago O'Hare Intl

Wed 11/4

7:15 pm-2:05 pm

1 stop11h 50m

$556

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/3

12:50 pm-5:50 pm

1 stop12h 00m

Chicago O'Hare Intl

Tue 9/15

8:50 pm-11:20 pm

1 stop19h 30m

$556

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/3

8:35 am-5:50 pm

1 stop16h 15m

Chicago O'Hare Intl

Sat 9/19

9:30 pm-7:45 pm

1 stop15h 15m

$560

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/10

12:50 pm-5:50 pm

1 stop12h 00m

Chicago O'Hare Intl

Thu 9/17

1:35 pm-10:55 am

2 stops14h 20m

$560

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/3

12:50 pm-5:50 pm

1 stop12h 00m

Chicago O'Hare Intl

Sat 9/19

5:00 pm-11:30 pm

1 stop23h 30m

$560

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/24

12:50 pm-5:50 pm

1 stop12h 00m

Chicago O'Hare Intl

Wed 9/30

1:35 pm-10:45 am

2 stops14h 10m

$561

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/3

12:50 pm-5:50 pm

1 stop12h 00m

Chicago O'Hare Intl

Tue 9/15

1:35 pm-10:40 am

2 stops14h 05m

$561

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/3

8:35 am-5:50 pm

1 stop16h 15m

Chicago O'Hare Intl

Sat 9/19

9:30 pm-7:45 pm

1 stop15h 15m

$564

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

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 $463, 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 April is also cheap. Prices for this month can be found on momondo for an average of $478.

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 $605 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

Fastest flight time	15h 32m
Direct flights	None

The fastest flight from Oslo to Illinois takes 15h 32m

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 July 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 1,904 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.