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

Finnair, British Airways, and American Airlines 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 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.

$294 Cheap Flights from Oslo to Illinois in 2026

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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.

1:50 pm - 9:25 pm

OSL

ORD

14h 35m

1 stop

10:25 pm - 12:35 pm

ORD

OSL

31h 10m

1 stop

$458Icelandair

Fri, Apr 10 - Sun, Apr 26

1:50 pm - 6:15 pm

OSL

ORD

11h 25m

1 stop

10:25 pm - 12:35 pm

ORD

OSL

31h 10m

1 stop

$459Icelandair

Fri, Apr 10 - Sun, Apr 26

1:50 pm - 6:15 pm

OSL

ORD

11h 25m

1 stop

10:25 pm - 3:25 pm

ORD

OSL

10h 00m

1 stop

$471Icelandair

Fri, Apr 10 - Fri, Apr 17

1:50 pm - 6:15 pm

OSL

ORD

11h 25m

1 stop

10:25 pm - 12:35 pm

ORD

OSL

31h 10m

1 stop

$480Icelandair

Fri, Apr 10 - Sun, Apr 26

1:50 pm - 6:15 pm

OSL

ORD

11h 25m

1 stop

10:25 pm - 12:35 pm

ORD

OSL

31h 10m

1 stop

$481Icelandair

Fri, Apr 10 - Sun, Apr 26

9:20 am - 2:15 pm

OSL

ORD

11h 55m

1 stop

4:50 pm - 1:40 pm

ORD

OSL

13h 50m

1 stop

$504KLM

Sat, Apr 4 - Mon, Apr 20

9:20 am - 6:40 pm

OSL

MDW

16h 20m

2 stops

7:16 pm - 8:40 pm

MDW

OSL

18h 24m

2 stops

$541Delta

Sat, Apr 4 - Mon, Apr 20

8:00 am - 6:36 pm

OSL

MDW

17h 36m

2 stops

7:16 pm - 4:20 pm

MDW

OSL

14h 04m

2 stops

$563Delta

Tue, Apr 28 - Tue, May 5

6:55 am - 9:47 pm

OSL

STL

21h 52m

2 stops

11:15 am - 5:15 pm

STL

OSL

23h 00m

2 stops

$688United Airlines

Tue, Mar 31 - Sat, Apr 4

7:00 pm - 1:25 pm

OSL

STL

25h 25m

1 stop

1:10 pm - 2:50 pm

STL

OSL

18h 40m

2 stops

$772Lufthansa

Tue, Mar 31 - Sat, Apr 4

American Airlines flights from Oslo to Illinois

Our best American Airlines deals on Oslo to Illinois flight tickets

American Airlines

Apr 18

OSL8:15 amOslo Gardermoen

16h 20m

1 stop

ORD5:35 pmChicago O'Hare Intl

Apr 21

ORD5:55 pmChicago O'Hare Intl

33h 50m

1 stop

OSL10:45 amOslo Gardermoen

$526

American Airlines

Apr 18

OSL8:15 amOslo Gardermoen

16h 20m

1 stop

ORD5:35 pmChicago O'Hare Intl

Apr 21

ORD5:55 pmChicago O'Hare Intl

33h 50m

1 stop

OSL10:45 amOslo Gardermoen

$527

American Airlines

Apr 18

OSL8:15 amOslo Gardermoen

20h 20m

2 stops

ORD9:35 pmChicago O'Hare Intl

Apr 21

ORD1:45 pmChicago O'Hare Intl

19h 40m

2 stops

OSL4:25 pmOslo Gardermoen

$532

Delta flights from Oslo to Illinois

Our best Delta deals on Oslo to Illinois flight tickets

Delta

Apr 4

OSL9:20 amOslo Gardermoen

11h 55m

1 stop

ORD2:15 pmChicago O'Hare Intl

Apr 20

ORD8:32 pmChicago O'Hare Intl

17h 08m

2 stops

OSL8:40 pmOslo Gardermoen

$536

Delta

Apr 4

OSL6:30 amOslo Gardermoen

18h 23m

2 stops

ORD5:53 pmChicago O'Hare Intl

Apr 20

ORD8:32 pmChicago O'Hare Intl

17h 08m

2 stops

OSL8:40 pmOslo Gardermoen

$541

Delta

Apr 29

OSL6:30 amOslo Gardermoen

19h 22m

2 stops

ORD6:52 pmChicago O'Hare Intl

May 6

ORD11:08 amChicago O'Hare Intl

14h 37m

2 stops

OSL8:45 amOslo Gardermoen

$550

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Fri 4/10

1:50 pm-9:25 pm

1 stop14h 35m

Chicago O'Hare Intl

Sun 4/26

10:25 pm-12:35 pm

1 stop31h 10m

$458

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Fri 4/10

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Sun 4/26

10:25 pm-12:35 pm

1 stop31h 10m

$459

Quickest round-trip

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Fri 4/10

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Fri 4/17

10:25 pm-3:25 pm

1 stop10h 00m

$471

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Fri 4/10

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Sun 4/26

10:25 pm-12:35 pm

1 stop31h 10m

$480

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Fri 4/10

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Sun 4/26

10:25 pm-12:35 pm

1 stop31h 10m

$481

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Sat 4/4

9:20 am-2:15 pm

1 stop11h 55m

Chicago O'Hare Intl

Mon 4/20

4:50 pm-1:40 pm

1 stop13h 50m

$504

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Sat 4/4

9:20 am-6:40 pm

2 stops16h 20m

Chicago Midway

Mon 4/20

7:16 pm-8:40 pm

2 stops18h 24m

$541

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Tue 4/28

8:00 am-6:36 pm

2 stops17h 36m

Chicago Midway

Tue 5/5

7:16 pm-4:20 pm

2 stops14h 04m

$563

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Tue 3/31

6:55 am-9:47 pm

2 stops21h 52m

Lambert-St Louis

Sat 4/4

11:15 am-5:15 pm

2 stops23h 00m

$688

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Tue 3/31

7:00 pm-1:25 pm

1 stop25h 25m

Lambert-St Louis

Sat 4/4

1:10 pm-2:50 pm

2 stops18h 40m

$772

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 $454, 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 September is also cheap. Prices for this month can be found on momondo for an average of $470.

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 $584 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 $409 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 25m
Direct flights	None

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

When did momondo last update prices for flights from Oslo to Illinois?
Prices for flights from Oslo to Illinois are updated daily.
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.

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.