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

Finnair is the most popular carrier 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.

$237 Cheap Flights from Oslo to Illinois in 2026

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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.

5:05 pm - 12:30 pm

OSL

ORD

26h 25m

1 stop

9:15 pm - 11:40 pm

ORD

OSL

19h 25m

1 stop

$392Multiple Airlines

Mon, Jun 15 - Sun, Jun 21

1:50 pm - 6:15 pm

OSL

ORD

11h 25m

1 stop

7:25 pm - 12:35 pm

ORD

OSL

10h 10m

1 stop

$393Icelandair

Mon, Apr 13 - Tue, Apr 21

5:05 pm - 12:30 pm

OSL

ORD

26h 25m

1 stop

9:15 pm - 11:40 pm

ORD

OSL

19h 25m

1 stop

$395Multiple Airlines

Mon, Jun 15 - Sun, Jun 21

6:30 am - 5:58 pm

OSL

MDW

18h 28m

2 stops

1:23 pm - 1:45 pm

MDW

OSL

17h 22m

2 stops

$495Delta

Mon, Apr 13 - Tue, Apr 21

6:30 am - 5:58 pm

OSL

MDW

18h 28m

2 stops

6:38 pm - 4:20 pm

MDW

OSL

14h 42m

2 stops

$509Delta

Mon, Apr 20 - Sun, Apr 26

11:50 am - 11:48 pm

OSL

STL

18h 58m

2 stops

6:33 pm - 10:40 pm

STL

OSL

22h 07m

2 stops

$539British Airways

Wed, Mar 4 - Sun, Mar 8

6:55 am - 4:58 pm

OSL

STL

17h 03m

2 stops

6:33 pm - 10:40 pm

STL

OSL

22h 07m

2 stops

$542British Airways

Wed, Mar 4 - Sun, Mar 8

6:55 am - 1:25 pm

OSL

STL

13h 30m

1 stop

3:30 pm - 9:05 am

STL

OSL

34h 35m

1 stop

$663Lufthansa

Tue, Jul 7 - Mon, Jul 13

6:00 am - 4:10 pm

TRF

ORD

17h 10m

1 stop

7:15 pm - 2:30 pm

ORD

TRF

12h 15m

1 stop

$673Scandinavian Airlines

Mon, Apr 20 - Mon, Apr 20

2:00 pm - 4:45 pm

TRF

ORD

33h 45m

1 stop

7:20 pm - 1:30 pm

ORD

TRF

11h 10m

1 stop

$712Scandinavian Airlines

Sun, Feb 8 - Sat, Feb 21

Icelandair flights from Oslo to Illinois

Our best Icelandair deals on Oslo to Illinois flight tickets

Icelandair

Apr 13

OSL1:50 pmOslo Gardermoen

11h 25m

1 stop

ORD6:15 pmChicago O'Hare Intl

Apr 21

ORD7:25 pmChicago O'Hare Intl

10h 10m

1 stop

OSL12:35 pmOslo Gardermoen

$393

Icelandair

Feb 8

OSL1:05 pmOslo Gardermoen

11h 15m

1 stop

ORD5:20 pmChicago O'Hare Intl

Feb 21

ORD6:30 pmChicago O'Hare Intl

10h 05m

1 stop

OSL11:35 amOslo Gardermoen

$407

Icelandair

Mar 8

OSL9:30 pmOslo Gardermoen

26h 50m

1 stop

ORD6:20 pmChicago O'Hare Intl

Mar 24

ORD7:30 pmChicago O'Hare Intl

10h 05m

1 stop

OSL11:35 amOslo Gardermoen

$415

British Airways flights from Oslo to Illinois

Our best British Airways deals on Oslo to Illinois flight tickets

British Airways

Feb 11

OSL6:55 amOslo Gardermoen

21h 20m

2 stops

STL9:15 pmLambert-St Louis

Feb 15

STL6:38 pmLambert-St Louis

21h 02m

2 stops

OSL10:40 pmOslo Gardermoen

$468

British Airways

Mar 8

OSL11:30 amOslo Gardermoen

36h 30m

2 stops

ORD6:00 pmChicago O'Hare Intl

Mar 24

ORD7:40 pmChicago O'Hare Intl

21h 00m

1 stop

OSL10:40 pmOslo Gardermoen

$488

British Airways

Jun 15

OSL5:05 pmOslo Gardermoen

27h 45m

1 stop

ORD1:50 pmChicago O'Hare Intl

Jun 21

ORD7:05 pmChicago O'Hare Intl

21h 35m

1 stop

OSL11:40 pmOslo Gardermoen

$503

Fly from

Fly to

Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 6/15

5:05 pm-12:30 pm

1 stop26h 25m

Chicago O'Hare Intl

Sun 6/21

9:15 pm-11:40 pm

1 stop19h 25m

$392

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 4/13

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Tue 4/21

7:25 pm-12:35 pm

1 stop10h 10m

$393

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 6/15

5:05 pm-12:30 pm

1 stop26h 25m

Chicago O'Hare Intl

Sun 6/21

9:15 pm-11:40 pm

1 stop19h 25m

$395

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Mon 4/13

6:30 am-5:58 pm

2 stops18h 28m

Chicago Midway

Tue 4/21

1:23 pm-1:45 pm

2 stops17h 22m

$495

OsloChicago

OSL - MDW

OSLMDW

Oslo Gardermoen

Mon 4/20

6:30 am-5:58 pm

2 stops18h 28m

Chicago Midway

Sun 4/26

6:38 pm-4:20 pm

2 stops14h 42m

$509

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Wed 3/4

11:50 am-11:48 pm

2 stops18h 58m

Lambert-St Louis

Sun 3/8

6:33 pm-10:40 pm

2 stops22h 07m

$539

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Wed 3/4

6:55 am-4:58 pm

2 stops17h 03m

Lambert-St Louis

Sun 3/8

6:33 pm-10:40 pm

2 stops22h 07m

$542

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Tue 7/7

6:55 am-1:25 pm

1 stop13h 30m

Lambert-St Louis

Mon 7/13

3:30 pm-9:05 am

1 stop34h 35m

$663

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

Mon 4/20

6:00 am-4:10 pm

1 stop17h 10m

Chicago O'Hare Intl

Mon 4/20

7:15 pm-2:30 pm

1 stop12h 15m

$673

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

Sun 2/8

2:00 pm-4:45 pm

1 stop33h 45m

Chicago O'Hare Intl

Sat 2/21

7:20 pm-1:30 pm

1 stop11h 10m

$712

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 November. Flight prices, which tend to average around $478, 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 November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $479.

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 $578 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 $388 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.