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Cheap flights from Illinois to Oslo from $168

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 4/28. 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
1:10 pm - 5:20 pm
OSL
-
ORD
11h 10m
1 stop
$397Icelandair
Wed, Feb 25 - Thu, Mar 5
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
$398Icelandair
Mon, Feb 23 - Sun, Mar 8
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
9:34 am - 8:40 am
MDW
-
OSL
16h 06m
2 stops
Delta Logo
6:30 am - 5:37 pm
OSL
-
MDW
18h 07m
2 stops
$535Delta
Sun, Feb 22 - Wed, Feb 25
Multiple Airlines Logo
10:49 am - 8:40 am
MDW
-
OSL
14h 51m
2 stops
Multiple Airlines Logo
6:25 am - 4:14 pm
OSL
-
MDW
16h 49m
2 stops
$541Multiple Airlines
Thu, Feb 19 - Sat, Feb 28
Air Canada Logo
9:10 am - 5:15 pm
STL
-
OSL
25h 05m
2 stops
Air Canada Logo
9:55 am - 10:28 pm
OSL
-
STL
19h 33m
2 stops
$547Air Canada
Sun, Mar 29 - Tue, Apr 14

British Airways flights from Illinois to Oslo Gardermoen Airport

Our best British Airways deals on Illinois to Oslo Gardermoen Airport flight tickets
British Airways
Mar 10
ORD4:21 pmChicago O'Hare Intl
15h 49m
2 stops
OSL2:10 pmOslo Gardermoen
Mar 17
OSL7:25 pmOslo Gardermoen
25h 25m
1 stop
ORD2:50 pmChicago O'Hare Intl
$513
British Airways
Feb 13
STL6:36 pmLambert-St Louis
15h 54m
2 stops
OSL5:30 pmOslo Gardermoen
Feb 15
OSL11:30 amOslo Gardermoen
19h 18m
2 stops
STL11:48 pmLambert-St Louis
$19,970

KLM flights from Illinois to Oslo Gardermoen Airport

Our best KLM deals on Illinois to Oslo Gardermoen Airport flight tickets
KLM
Feb 14
ORD4:25 pmChicago O'Hare Intl
33h 15m
1 stop
OSL8:40 amOslo Gardermoen
Feb 26
OSL4:25 pmOslo Gardermoen
28h 55m
1 stop
ORD2:20 pmChicago O'Hare Intl
$521
KLM
Feb 19
ORD11:18 amChicago O'Hare Intl
14h 22m
2 stops
OSL8:40 amOslo Gardermoen
Feb 28
OSL12:40 pmOslo Gardermoen
32h 40m
1 stop
ORD2:20 pmChicago O'Hare Intl
$525
KLM
Feb 19
ORD11:18 amChicago O'Hare Intl
14h 22m
2 stops
OSL8:40 amOslo Gardermoen
Feb 28
OSL8:00 amOslo Gardermoen
17h 01m
2 stops
ORD6:01 pmChicago O'Hare Intl
$535

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Oslo Gardermoen Airport 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 11, 2026.
Use the filters below to find and compare flights from Illinois to Oslo Gardermoen Airport 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

Wed 2/25

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Thu 3/5

1:10 pm-5:20 pm

1 stop11h 10m

$397

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

$398

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

Sun 2/22

9:34 am-8:40 am

2 stops16h 06m

Oslo Gardermoen

Wed 2/25

6:30 am-5:37 pm

2 stops18h 07m

$535

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Thu 2/19

10:49 am-8:40 am

2 stops14h 51m

Oslo Gardermoen

Sat 2/28

6:25 am-4:14 pm

2 stops16h 49m

$541

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 3/29

9:10 am-5:15 pm

2 stops25h 05m

Oslo Gardermoen

Tue 4/14

9:55 am-10:28 pm

2 stops19h 33m

$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 Gardermoen Airport

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 Gardermoen Airport?

The cheapest month to fly to Oslo Gardermoen Airport from Illinois is in January. Flight prices, which tend to average around $420, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Oslo Gardermoen Airport from Illinois during November instead. Flights to Oslo Gardermoen Airport in November, while not as cheap as those in January, still average around $450.

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

You are more likely to see cheaper flights to Oslo Gardermoen Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Oslo Gardermoen Airport 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 Gardermoen Airport from Illinois for as low as $467 on momondo.

Can stopping save me money on Illinois to Oslo Gardermoen Airport flights?

You could potentially save up to 84% on your flight if you consider stops on a Illinois to Oslo Gardermoen Airport flight.

Cheap Illinois to Oslo Gardermoen Airport flight deals and tips

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

Fastest flight time

10h 00m

Direct flights

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

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

    Prices for flights from Illinois to Oslo Gardermoen Airport refresh daily.

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

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

    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 Gardermoen Airport.

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

    The travel and health documents required for your trip to Oslo Gardermoen Airport 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 Gardermoen Airport. 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 Gardermoen Airport

Compare and see reviews for airlines that fly from Illinois to Oslo Gardermoen Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $388Free CancellationRating
7.3
1,679 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $397Free CancellationRating
7.1
611 reviews
Search Icelandair flights
British AirwaysPriceFrom $471Free CancellationRating
6.7
7,731 reviews
Search British Airways flights
LufthansaPriceFrom $494Free CancellationRating
6.8
7,780 reviews
Search Lufthansa flights
American AirlinesPriceFrom $505Free CancellationRating
7.2
11,271 reviews
Search American Airlines flights
DeltaPriceFrom $513Free CancellationRating
7.9
8,181 reviews
Search Delta flights
United AirlinesPriceFrom $532Free CancellationRating
7.4
9,279 reviews
Search United Airlines flights
KLMPriceFrom $544Free CancellationRating
7.7
1,451 reviews
Search KLM flights

Traveling to a place near Oslo?

Book flights to Oslo if you plan to visit one of these locations
Gardermoen
Fredrikstad
Lillehammer
Drammen

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. All flights to Oslo from Illinois on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

If you are not ready to book a flight from Illinois to Oslo now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Oslo and let you know when they change.

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