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Cheap flights from Illinois to Oslo from $208

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Oslo departing on 4/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Oslo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
6:30 pm - 11:35 am
ORD
-
OSL
10h 05m
1 stop
Icelandair Logo
9:30 pm - 6:20 pm
OSL
-
ORD
26h 50m
1 stop
$368Icelandair
Mon, Feb 23 - Sun, Mar 8
Icelandair Logo
6:30 pm - 11:35 am
ORD
-
OSL
10h 05m
1 stop
Icelandair Logo
9:30 pm - 6:20 pm
OSL
-
ORD
26h 50m
1 stop
$369Icelandair
Sun, Mar 1 - Sun, Mar 15
Scandinavian Airlines Logo
7:15 pm - 2:30 pm
ORD
-
TRF
12h 15m
1 stop
Scandinavian Airlines Logo
6:00 am - 4:10 pm
TRF
-
ORD
17h 10m
1 stop
$436Scandinavian Airlines
Mon, Apr 6 - Mon, Apr 20
Scandinavian Airlines Logo
7:15 pm - 12:25 am
ORD
-
TRF
22h 10m
1 stop
Scandinavian Airlines Logo
3:05 pm - 4:10 pm
TRF
-
ORD
32h 05m
1 stop
$451Scandinavian Airlines
Mon, Apr 6 - Sun, Apr 19
Multiple Airlines Logo
6:35 pm - 5:55 pm
STL
-
OSL
16h 20m
2 stops
Multiple Airlines Logo
9:55 am - 3:24 pm
OSL
-
STL
36h 29m
2 stops
$479Multiple Airlines
Sun, Mar 29 - Tue, Apr 14
Lufthansa Logo
3:30 pm - 12:20 pm
STL
-
OSL
13h 50m
1 stop
Lufthansa Logo
6:55 am - 9:08 pm
OSL
-
STL
21h 13m
2 stops
$489Lufthansa
Sun, Mar 29 - Tue, Apr 14
Lufthansa Logo
3:30 pm - 12:20 pm
STL
-
OSL
13h 50m
1 stop
Lufthansa Logo
7:00 pm - 1:25 pm
OSL
-
STL
25h 25m
1 stop
$505Lufthansa
Sun, Mar 29 - Tue, Apr 14
Delta Logo
7:16 pm - 6:45 pm
MDW
-
OSL
16h 29m
2 stops
Delta Logo
6:30 am - 5:58 pm
OSL
-
MDW
18h 28m
2 stops
$521Delta
Mon, Apr 27 - Mon, May 4
Delta Logo
7:20 pm - 8:40 pm
MDW
-
OSL
18h 20m
2 stops
Delta Logo
9:20 am - 6:36 pm
OSL
-
MDW
16h 16m
2 stops
$522Delta
Tue, Apr 7 - Wed, Apr 15
Multiple Airlines Logo
4:05 pm - 5:55 pm
ORD
-
TRF
18h 50m
2 stops
Multiple Airlines Logo
9:40 pm - 7:55 pm
TRF
-
ORD
29h 15m
2 stops
$547Multiple Airlines
Mon, Apr 13 - Mon, Apr 20

Lufthansa flights from Illinois to Oslo

Our best Lufthansa deals on Illinois to Oslo flight tickets
Lufthansa
Mar 10
ORD10:50 pmChicago O'Hare Intl
12h 50m
1 stop
OSL5:40 pmOslo Gardermoen
Mar 17
OSL11:50 amOslo Gardermoen
13h 35m
1 stop
ORD7:25 pmChicago O'Hare Intl
$477
Lufthansa
Feb 25
ORD10:35 pmChicago O'Hare Intl
11h 55m
1 stop
OSL5:30 pmOslo Gardermoen
Mar 5
OSL1:45 pmOslo Gardermoen
13h 20m
1 stop
ORD8:05 pmChicago O'Hare Intl
$486
Lufthansa
Apr 27
ORD3:35 pmChicago O'Hare Intl
12h 20m
1 stop
OSL10:55 amOslo Gardermoen
May 4
OSL6:45 amOslo Gardermoen
13h 10m
1 stop
ORD12:55 pmChicago O'Hare Intl
$491

Icelandair flights from Illinois to Oslo

Our best Icelandair deals on Illinois to Oslo flight tickets
Icelandair
Feb 23
ORD6:30 pmChicago O'Hare Intl
10h 05m
1 stop
OSL11:35 amOslo Gardermoen
Mar 8
OSL9:30 pmOslo Gardermoen
26h 50m
1 stop
ORD6:20 pmChicago O'Hare Intl
$368
Icelandair
Mar 1
ORD6:30 pmChicago O'Hare Intl
10h 05m
1 stop
OSL11:35 amOslo Gardermoen
Mar 15
OSL9:30 pmOslo Gardermoen
26h 50m
1 stop
ORD6:20 pmChicago O'Hare Intl
$369
Icelandair
Mar 2
ORD6:30 pmChicago O'Hare Intl
10h 05m
1 stop
OSL11:35 amOslo Gardermoen
Mar 15
OSL9:30 pmOslo Gardermoen
26h 50m
1 stop
ORD6:20 pmChicago O'Hare Intl
$395

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Oslo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 13, 2026.
Use the filters below to find and compare flights from Illinois to Oslo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 2/23

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Sun 3/8

9:30 pm-6:20 pm

1 stop26h 50m

$368

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 3/1

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Sun 3/15

9:30 pm-6:20 pm

1 stop26h 50m

$369

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Mon 4/6

7:15 pm-2:30 pm

1 stop12h 15m

Oslo Sandefjord

Mon 4/20

6:00 am-4:10 pm

1 stop17h 10m

$436

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Mon 4/6

7:15 pm-12:25 am

1 stop22h 10m

Oslo Sandefjord

Sun 4/19

3:05 pm-4:10 pm

1 stop32h 05m

$451

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 3/29

6:35 pm-5:55 pm

2 stops16h 20m

Oslo Gardermoen

Tue 4/14

9:55 am-3:24 pm

2 stops36h 29m

$479

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 3/29

3:30 pm-12:20 pm

1 stop13h 50m

Oslo Gardermoen

Tue 4/14

6:55 am-9:08 pm

2 stops21h 13m

$489

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 3/29

3:30 pm-12:20 pm

1 stop13h 50m

Oslo Gardermoen

Tue 4/14

7:00 pm-1:25 pm

1 stop25h 25m

$505

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Mon 4/27

7:16 pm-6:45 pm

2 stops16h 29m

Oslo Gardermoen

Mon 5/4

6:30 am-5:58 pm

2 stops18h 28m

$521

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Tue 4/7

7:20 pm-8:40 pm

2 stops18h 20m

Oslo Gardermoen

Wed 4/15

9:20 am-6:36 pm

2 stops16h 16m

$522

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Mon 4/13

4:05 pm-5:55 pm

2 stops18h 50m

Oslo Sandefjord

Mon 4/20

9:40 pm-7:55 pm

2 stops29h 15m

$547

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Oslo from

How to get the cheapest flight ticket from Illinois to Oslo

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 Oslo?

The month of January is, on average, the cheapest month to fly to Oslo from Illinois, with most prices found around $420. If you’re not able to fly to Oslo in January, then November is your next best option. Flight prices from Illinois to Oslo during November average around $450.

How far in advance should I book a flight to Oslo?

You are more likely to see cheaper flights to Oslo from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Oslo for around $610 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Oslo from Illinois for as low as $467 on momondo.

Cheap Illinois to Oslo flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Oslo

Fastest flight time

10h 00m

Direct flights

None
The fastest flight from Illinois to Oslo takes 10h 00m
There are no direct flights from Illinois to Oslo. There are no popular flight routes from Illinois to Oslo.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Oslo?

    Prices for flights from Illinois to Oslo refresh daily.

  • How many operators does momondo search for flights from Illinois to Oslo?

  • How old do you have to be to fly from Illinois to Oslo?

    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 Illinois to Oslo.

  • What documentation or ID do you need to fly to Oslo?

    The travel and health documents required for your trip to Oslo can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Oslo. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Illinois to Oslo

Compare and see reviews for airlines that fly from Illinois to Oslo with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $388Free CancellationRating
7.3
1,682 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $397Free CancellationRating
7.1
614 reviews
Search Icelandair flights
British AirwaysPriceFrom $471Free CancellationRating
6.7
7,737 reviews
Search British Airways flights
LufthansaPriceFrom $494Free CancellationRating
6.8
7,782 reviews
Search Lufthansa flights
American AirlinesPriceFrom $505Free CancellationRating
7.2
11,279 reviews
Search American Airlines flights
DeltaPriceFrom $513Free CancellationRating
7.9
8,193 reviews
Search Delta flights
United AirlinesPriceFrom $532Free CancellationRating
7.4
9,283 reviews
Search United Airlines flights
KLMPriceFrom $544Free CancellationRating
7.7
1,452 reviews
Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Oslo?

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 Oslo from Illinois.

Can I find flights from Illinois to Oslo with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Oslo flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Oslo?

Once all potential Illinois to Oslo flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to Oslo right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Illinois to Oslo flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Norway

Fly into one of these airports located in Oslo

Airports listed have a maximum distance of 53.1 mi from Oslo
Oslo Gardermoen Airport
Oslo Sandefjord Airport