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

Finnair, TAP AIR PORTUGAL, and Icelandair 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 October 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.

$285 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

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:55 pm - 3:25 pmOSL-ORD

27h 30m1 stop

8:15 pm - 5:55 pmORD-OSL

14h 40m1 stop

$412TAP AIR PORTUGAL

Find Deal

jue., nov. 13 - vie., nov. 28

6:55 pm - 3:25 pmOSL-ORD

27h 30m1 stop

8:15 pm - 5:55 pmORD-OSL

14h 40m1 stop

$421TAP AIR PORTUGAL

Find Deal

jue., nov. 13 - vie., nov. 28

1:10 pm - 5:20 pmOSL-ORD

11h 10m1 stop

7:25 pm - 12:35 pmORD-OSL

10h 10m1 stop

$429Icelandair

Find Deal

vie., mar. 6 - lun., mar. 30

1:10 pm - 6:20 pmOSL-ORD

11h 10m1 stop

7:25 pm - 12:35 pmORD-OSL

10h 10m1 stop

$432Icelandair

Find Deal

jue., mar. 12 - mar., mar. 31

8:45 am - 7:40 pmOSL-ORD

17h 55m2 stops

11:48 am - 10:55 amORD-OSL

16h 07m2 stops

$460British Airways

Find Deal

lun., nov. 17 - lun., nov. 24

6:55 am - 6:02 pmOSL-ORD

18h 07m2 stops

6:35 pm - 10:40 pmORD-OSL

21h 05m1 stop

$472British Airways

Find Deal

mié., dic. 3 - mié., dic. 10

6:15 am - 3:20 pmOSL-ORD

16h 05m1 stop

9:50 pm - 5:40 pmORD-OSL

12h 50m1 stop

$494Lufthansa

Find Deal

jue., nov. 13 - vie., nov. 28

6:15 am - 8:05 pmOSL-ORD

20h 50m1 stop

3:20 pm - 3:40 pmORD-OSL

17h 20m1 stop

$509Lufthansa

Find Deal

jue., nov. 13 - vie., nov. 28

2:35 pm - 4:45 pmTRF-ORD

33h 10m1 stop

7:20 pm - 2:05 pmORD-TRF

11h 45m1 stop

$532Scandinavian Airlines

Find Deal

jue., dic. 4 - lun., dic. 8

11:05 am - 4:45 pmOSL-ORD

12h 40m1 stop

7:20 pm - 2:15 pmORD-OSL

11h 55m1 stop

$554Scandinavian Airlines

Find Deal

lun., dic. 22 - sáb., ene. 10

Delta flights from Oslo to Illinois

Our best Delta deals on Oslo to Illinois flight tickets

Delta

Nov 13

OSL6:30 amOslo Gardermoen

18h 23m

2 stops

ORD5:53 pmChicago O'Hare Intl

Nov 28

ORD1:29 pmChicago O'Hare Intl

17h 21m

2 stops

OSL1:50 pmOslo Gardermoen

$466

Find similar

Delta

Nov 13

OSL6:30 amOslo Gardermoen

18h 43m

2 stops

ORD6:13 pmChicago O'Hare Intl

Nov 28

ORD1:29 pmChicago O'Hare Intl

17h 21m

2 stops

OSL1:50 pmOslo Gardermoen

$467

Find similar

Delta

Nov 17

OSL9:25 amOslo Gardermoen

11h 55m

1 stop

ORD2:20 pmChicago O'Hare Intl

Nov 24

ORD5:20 pmChicago O'Hare Intl

16h 00m

1 stop

OSL4:20 pmOslo Gardermoen

$468

Find similar

Lufthansa flights from Oslo to Illinois

Our best Lufthansa deals on Oslo to Illinois flight tickets

Lufthansa

Nov 13

OSL6:15 amOslo Gardermoen

16h 05m

1 stop

ORD3:20 pmChicago O'Hare Intl

Nov 28

ORD9:50 pmChicago O'Hare Intl

12h 50m

1 stop

OSL5:40 pmOslo Gardermoen

$494

Find similar

Lufthansa

Nov 13

OSL6:15 amOslo Gardermoen

20h 50m

1 stop

ORD8:05 pmChicago O'Hare Intl

Nov 28

ORD3:20 pmChicago O'Hare Intl

17h 20m

1 stop

OSL3:40 pmOslo Gardermoen

$509

Find similar

Lufthansa

Oct 25

OSL6:35 amOslo Gardermoen

15h 20m

1 stop

ORD2:55 pmChicago O'Hare Intl

Oct 27

ORD10:50 pmChicago O'Hare Intl

12h 50m

1 stop

OSL5:40 pmOslo Gardermoen

$728

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 11/13

6:55 pm-3:25 pm

1 stop27h 30m

Chicago O'Hare Intl

vie. 11/28

8:15 pm-5:55 pm

1 stop14h 40m

$412

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 11/13

6:55 pm-3:25 pm

1 stop27h 30m

Chicago O'Hare Intl

vie. 11/28

8:15 pm-5:55 pm

1 stop14h 40m

$421

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

vie. 3/6

1:10 pm-5:20 pm

1 stop11h 10m

Chicago O'Hare Intl

lun. 3/30

7:25 pm-12:35 pm

1 stop10h 10m

$429

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 3/12

1:10 pm-6:20 pm

1 stop11h 10m

Chicago O'Hare Intl

mar. 3/31

7:25 pm-12:35 pm

1 stop10h 10m

$432

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

lun. 11/17

8:45 am-7:40 pm

2 stops17h 55m

Chicago O'Hare Intl

lun. 11/24

11:48 am-10:55 am

2 stops16h 07m

$460

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mié. 12/3

6:55 am-6:02 pm

2 stops18h 07m

Chicago O'Hare Intl

mié. 12/10

6:35 pm-10:40 pm

1 stop21h 05m

$472

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 11/13

6:15 am-3:20 pm

1 stop16h 05m

Chicago O'Hare Intl

vie. 11/28

9:50 pm-5:40 pm

1 stop12h 50m

$494

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 11/13

6:15 am-8:05 pm

1 stop20h 50m

Chicago O'Hare Intl

vie. 11/28

3:20 pm-3:40 pm

1 stop17h 20m

$509

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

jue. 12/4

2:35 pm-4:45 pm

1 stop33h 10m

Chicago O'Hare Intl

lun. 12/8

7:20 pm-2:05 pm

1 stop11h 45m

$532

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

lun. 12/22

11:05 am-4:45 pm

1 stop12h 40m

Chicago O'Hare Intl

sáb. 1/10

7:20 pm-2:15 pm

1 stop11h 55m

$554

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 $441, 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 November is also cheap. Prices for this month can be found on momondo for an average of $446.

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 $566 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

Direct flights	None

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 October 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 1,535 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.