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

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 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.

$368 Cheap Flights from Oslo to Illinois in 2025

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Find the cheapest flights from Oslo to Illinois

Round-trip

One-way

Last minute

Cheap round-trip flights

1:50 pm - 6:15 pmOSL-ORD

11h 25m1 stop

7:25 pm - 3:40 pmORD-OSL

13h 15m1 stop

$390Icelandair

Find Deal

Thu, Sep 25 - Thu, Oct 9

1:50 pm - 9:15 pmOSL-ORD

14h 25m1 stop

7:25 pm - 12:35 pmORD-OSL

10h 10m1 stop

$391Icelandair

Find Deal

Thu, Sep 18 - Thu, Oct 2

6:30 am - 2:40 pmOSL-ORD

15h 10m1 stop

4:40 pm - 1:40 pmORD-OSL

14h 00m1 stop

$417KLM

Find Deal

Mon, Sep 1 - Mon, Sep 15

6:30 am - 2:10 pmOSL-ORD

14h 40m1 stop

4:15 pm - 11:05 amORD-OSL

11h 50m1 stop

$422KLM

Find Deal

Thu, Oct 2 - Sun, Oct 5

7:50 am - 6:30 pmOSL-STL

17h 40m2 stops

8:01 pm - 11:25 pmSTL-OSL

20h 24m2 stops

$451British Airways

Find Deal

Fri, Aug 15 - Tue, Aug 19

2:35 pm - 4:45 pmTRF-ORD

33h 10m1 stop

7:20 pm - 2:05 pmORD-TRF

11h 45m1 stop

$463Scandinavian Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

2:35 pm - 4:45 pmTRF-ORD

33h 10m1 stop

7:20 pm - 2:05 pmORD-TRF

11h 45m1 stop

$464Scandinavian Airlines

Find Deal

Thu, Dec 4 - Mon, Dec 8

5:05 pm - 1:30 pmOSL-ORD

27h 25m2 stops

1:43 pm - 10:25 amORD-OSL

13h 42m2 stops

$483British Airways

Find Deal

Wed, Oct 1 - Mon, Oct 6

6:45 pm - 1:30 pmOSL-STL

25h 45m1 stop

7:04 pm - 6:00 pmSTL-OSL

15h 56m2 stops

$497Lufthansa

Find Deal

Thu, Aug 28 - Thu, Sep 4

6:35 am - 1:30 pmOSL-STL

13h 55m1 stop

5:30 pm - 6:05 pmSTL-OSL

17h 35m2 stops

$740Lufthansa

Find Deal

Fri, Aug 15 - Tue, Aug 19

Icelandair flights from Oslo to Illinois

Our best Icelandair deals on Oslo to Illinois flight tickets

Icelandair

Sep 25

OSL1:50 pmOslo Gardermoen

11h 25m

1 stop

ORD6:15 pmChicago O'Hare Intl

Oct 9

ORD7:25 pmChicago O'Hare Intl

13h 15m

1 stop

OSL3:40 pmOslo Gardermoen

$390

Find similar

Icelandair

Sep 18

OSL1:50 pmOslo Gardermoen

14h 25m

1 stop

ORD9:15 pmChicago O'Hare Intl

Oct 2

ORD7:25 pmChicago O'Hare Intl

10h 10m

1 stop

OSL12:35 pmOslo Gardermoen

$391

Find similar

Icelandair

Oct 2

OSL1:50 pmOslo Gardermoen

11h 25m

1 stop

ORD6:15 pmChicago O'Hare Intl

Oct 5

ORD10:15 pmChicago O'Hare Intl

10h 30m

1 stop

OSL3:45 pmOslo Gardermoen

$398

Find similar

British Airways flights from Oslo to Illinois

Our best British Airways deals on Oslo to Illinois flight tickets

British Airways

Aug 15

OSL7:50 amOslo Gardermoen

17h 40m

2 stops

STL6:30 pmLambert-St Louis

Aug 19

STL8:01 pmLambert-St Louis

20h 24m

2 stops

OSL11:25 pmOslo Gardermoen

$451

Find similar

British Airways

Oct 1

OSL5:05 pmOslo Gardermoen

27h 25m

2 stops

ORD1:30 pmChicago O'Hare Intl

Oct 6

ORD1:43 pmChicago O'Hare Intl

13h 42m

2 stops

OSL10:25 amOslo Gardermoen

$483

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/25

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

Thu 10/9

7:25 pm-3:40 pm

1 stop13h 15m

$390

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 9/18

1:50 pm-9:15 pm

1 stop14h 25m

Chicago O'Hare Intl

Thu 10/2

7:25 pm-12:35 pm

1 stop10h 10m

$391

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Mon 9/1

6:30 am-2:40 pm

1 stop15h 10m

Chicago O'Hare Intl

Mon 9/15

4:40 pm-1:40 pm

1 stop14h 00m

$417

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Thu 10/2

6:30 am-2:10 pm

1 stop14h 40m

Chicago O'Hare Intl

Sun 10/5

4:15 pm-11:05 am

1 stop11h 50m

$422

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Fri 8/15

7:50 am-6:30 pm

2 stops17h 40m

Lambert-St Louis

Tue 8/19

8:01 pm-11:25 pm

2 stops20h 24m

$451

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

Thu 12/4

2:35 pm-4:45 pm

1 stop33h 10m

Chicago O'Hare Intl

Mon 12/8

7:20 pm-2:05 pm

1 stop11h 45m

$463

OsloChicago

TRF - ORD

TRFORD

Oslo Sandefjord

Thu 12/4

2:35 pm-4:45 pm

1 stop33h 10m

Chicago O'Hare Intl

Mon 12/8

7:20 pm-2:05 pm

1 stop11h 45m

$464

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

Wed 10/1

5:05 pm-1:30 pm

2 stops27h 25m

Chicago O'Hare Intl

Mon 10/6

1:43 pm-10:25 am

2 stops13h 42m

$483

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Thu 8/28

6:45 pm-1:30 pm

1 stop25h 45m

Lambert-St Louis

Thu 9/4

7:04 pm-6:00 pm

2 stops15h 56m

$497

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

Fri 8/15

6:35 am-1:30 pm

1 stop13h 55m

Lambert-St Louis

Tue 8/19

5:30 pm-6:05 pm

2 stops17h 35m

$740

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 $398, 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 September is also cheap. Prices for this month can be found on momondo for an average of $425.

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 $570 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 $448 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	$368
Fastest flight time	11h 15m
Direct flights	None
Airports in Illinois	3 airports

The best one-way flight to Illinois from Oslo in the past 72 hours is $368. The best round-trip flight deal from Oslo to Illinois found on momondo in the last 72 hours is $390.

The fastest flight from Oslo to Illinois takes 11h 15m

There are no direct flights from Oslo to Illinois. Popular non-direct routes for this connection are Oslo Gardermoen Airport - Chicago O'Hare Intl Airport, Oslo Sandefjord Airport - Chicago Midway Airport and Oslo Gardermoen Airport - Chicago Midway Airport.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

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.