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Cheap flights from Illinois to Oslo from $245

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 8/24. 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
1 adult, Economy, 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 amORD  Chicago O'Hare Intl-OSL Oslo Gardermoen
10h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
1:10 pm - 5:20 pmOSL  Oslo Gardermoen-ORD Chicago O'Hare Intl
11h 10m1 stop Reykjavik Keflavik Intl
$508Icelandair
Tue, Dec 1 - Sat, Dec 5
Icelandair Logo
6:30 pm - 8:35 pmORD  Chicago O'Hare Intl-OSL Oslo Gardermoen
19h 05m1 stop Reykjavik Keflavik Intl
Icelandair Logo
1:10 pm - 5:20 pmOSL  Oslo Gardermoen-ORD Chicago O'Hare Intl
11h 10m1 stop Reykjavik Keflavik Intl
$510Icelandair
Sat, Dec 5 - Thu, Dec 10
Scandinavian Airlines Logo
7:15 pm - 10:30 pmORD  Chicago O'Hare Intl-OSL Oslo Gardermoen
20h 15m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
12:10 pm - 4:45 pmOSL  Oslo Gardermoen-ORD Chicago O'Hare Intl
11h 35m1 stop Kastrup Copenhagen
$515Scandinavian Airlines
Mon, Feb 1 - Thu, Feb 11
Scandinavian Airlines Logo
7:15 pm - 5:20 pmORD  Chicago O'Hare Intl-OSL Oslo Gardermoen
15h 05m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
10:00 am - 4:45 pmOSL  Oslo Gardermoen-ORD Chicago O'Hare Intl
13h 45m1 stop Kastrup Copenhagen
$515Scandinavian Airlines
Mon, Feb 8 - Mon, Feb 15
British Airways Logo
5:10 pm - 1:35 pmORD  Chicago O'Hare Intl-OSL Oslo Gardermoen
13h 25m1 stop London Heathrow
British Airways Logo
11:50 am - 6:45 pmOSL  Oslo Gardermoen-ORD Chicago O'Hare Intl
13h 55m1 stop London Heathrow
$635British Airways
Sat, Dec 5 - Tue, Dec 8
Multiple Airlines Logo
7:25 pm - 12:35 pmORD  Chicago O'Hare Intl-OSL Oslo Gardermoen
10h 10m1 stop Reykjavik Keflavik Intl
Multiple Airlines Logo
11:40 am - 5:50 pmOSL  Oslo Gardermoen-ORD Chicago O'Hare Intl
37h 10m2 stops Vilnius Helsinki-Vantaa
$662Multiple Airlines
Fri, Oct 2 - Sat, Oct 17
Delta Logo
3:30 pm - 1:50 pmORD  Chicago O'Hare Intl-OSL Oslo Gardermoen
16h 20m2 stops Minneapolis St Paul London Heathrow
Delta Logo
12:35 pm - 2:25 pmOSL  Oslo Gardermoen-ORD Chicago O'Hare Intl
32h 50m1 stop Amsterdam Schiphol
$731Delta
Tue, Oct 27 - Tue, Nov 17
Delta Logo
3:40 pm - 1:50 pmORD  Chicago O'Hare Intl-OSL Oslo Gardermoen
16h 10m2 stops Atlanta Hartsfield-Jackson London Heathrow
Delta Logo
6:05 am - 2:25 pmOSL  Oslo Gardermoen-ORD Chicago O'Hare Intl
15h 20m1 stop Amsterdam Schiphol
$731Delta
Tue, Oct 27 - Thu, Nov 12
Multiple Airlines Logo
4:05 pm - 3:45 pmSTL  Lambert-St Louis-OSL Oslo Gardermoen
40h 40m2 stops Toronto Pearson Intl Frankfurt am Main
Multiple Airlines Logo
6:15 am - 1:45 pmOSL  Oslo Gardermoen-STL Lambert-St Louis
14h 30m1 stop Frankfurt am Main
$768Multiple Airlines
Sat, Jan 16 - Fri, Jan 22
British Airways Logo
1:25 pm - 11:30 pmSTL  Lambert-St Louis-OSL Oslo Gardermoen
27h 05m2 stops Philadelphia London Heathrow
British Airways Logo
5:05 pm - 9:44 pmOSL  Oslo Gardermoen-STL Lambert-St Louis
35h 39m2 stops London Heathrow Philadelphia
$1,777British Airways
Sat, Sep 19 - Mon, Sep 28

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KLM flights from Illinois to Oslo Gardermoen Airport

Our best KLM deals on Illinois to Oslo Gardermoen Airport flight tickets
KLM
Oct 15
MDW1:27 pmChicago Midway
12h 18m
2 stops
OSL8:45 amOslo Gardermoen
Nov 3
OSL7:45 amOslo Gardermoen
17h 15m
2 stops
MDW6:00 pmChicago Midway
$787
KLM
Oct 28
MDW1:27 pmChicago Midway
13h 18m
2 stops
OSL8:45 amOslo Gardermoen
Nov 14
OSL9:30 amOslo Gardermoen
15h 34m
2 stops
MDW6:04 pmChicago Midway
$803
KLM
Oct 29
MDW1:27 pmChicago Midway
13h 18m
2 stops
OSL8:45 amOslo Gardermoen
Nov 14
OSL9:30 amOslo Gardermoen
15h 34m
2 stops
MDW6:04 pmChicago Midway
$853

Air Canada flights from Illinois to Oslo Gardermoen Airport

Our best Air Canada deals on Illinois to Oslo Gardermoen Airport flight tickets
Air Canada
Aug 26
ORD8:40 amChicago O'Hare Intl
25h 35m
2 stops
OSL5:15 pmOslo Gardermoen
Sep 11
OSL7:15 amOslo Gardermoen
31h 45m
2 stops
ORD8:00 amChicago O'Hare Intl
$780
Air Canada
Aug 26
ORD8:40 amChicago O'Hare Intl
25h 35m
2 stops
OSL5:15 pmOslo Gardermoen
Sep 14
OSL6:05 pmOslo Gardermoen
32h 43m
2 stops
ORD7:48 pmChicago O'Hare Intl
$792
Air Canada
Aug 30
ORD11:05 amChicago O'Hare Intl
23h 10m
2 stops
OSL5:15 pmOslo Gardermoen
Sep 10
OSL9:55 amOslo Gardermoen
16h 53m
2 stops
ORD7:48 pmChicago O'Hare Intl
$809

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 August 17, 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

Cheapest round-trip
Quickest round-trip

ChicagoOslo

ORD Chicago O'Hare Intl - OSL Oslo Gardermoen

ORDOSL

Chicago O'Hare Intl

Tue 12/1

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Sat 12/5

1:10 pm-5:20 pm

1 stop11h 10m

$508

ChicagoOslo

ORD Chicago O'Hare Intl - OSL Oslo Gardermoen

ORDOSL

Chicago O'Hare Intl

Sat 12/5

6:30 pm-8:35 pm

1 stop19h 05m

Oslo Gardermoen

Thu 12/10

1:10 pm-5:20 pm

1 stop11h 10m

$510

ChicagoOslo

ORD Chicago O'Hare Intl - OSL Oslo Gardermoen

ORDOSL

Chicago O'Hare Intl

Mon 2/1

7:15 pm-10:30 pm

1 stop20h 15m

Oslo Gardermoen

Thu 2/11

12:10 pm-4:45 pm

1 stop11h 35m

$515

ChicagoOslo

ORD Chicago O'Hare Intl - OSL Oslo Gardermoen

ORDOSL

Chicago O'Hare Intl

Mon 2/8

7:15 pm-5:20 pm

1 stop15h 05m

Oslo Gardermoen

Mon 2/15

10:00 am-4:45 pm

1 stop13h 45m

$515

ChicagoOslo

ORD Chicago O'Hare Intl - OSL Oslo Gardermoen

ORDOSL

Chicago O'Hare Intl

Sat 12/5

5:10 pm-1:35 pm

1 stop13h 25m

Oslo Gardermoen

Tue 12/8

11:50 am-6:45 pm

1 stop13h 55m

$635

ChicagoOslo

ORD Chicago O'Hare Intl - OSL Oslo Gardermoen

ORDOSL

Chicago O'Hare Intl

Fri 10/2

7:25 pm-12:35 pm

1 stop10h 10m

Oslo Gardermoen

Sat 10/17

11:40 am-5:50 pm

2 stops37h 10m

$662

ChicagoOslo

ORD Chicago O'Hare Intl - OSL Oslo Gardermoen

ORDOSL

Chicago O'Hare Intl

Tue 10/27

3:30 pm-1:50 pm

2 stops16h 20m

Oslo Gardermoen

Tue 11/17

12:35 pm-2:25 pm

1 stop32h 50m

$731

ChicagoOslo

ORD Chicago O'Hare Intl - OSL Oslo Gardermoen

ORDOSL

Chicago O'Hare Intl

Tue 10/27

3:40 pm-1:50 pm

2 stops16h 10m

Oslo Gardermoen

Thu 11/12

6:05 am-2:25 pm

1 stop15h 20m

$731

St. LouisOslo

STL Lambert-St Louis - OSL Oslo Gardermoen

STLOSL

Lambert-St Louis

Sat 1/16

4:05 pm-3:45 pm

2 stops40h 40m

Oslo Gardermoen

Fri 1/22

6:15 am-1:45 pm

1 stop14h 30m

$768

St. LouisOslo

STL Lambert-St Louis - OSL Oslo Gardermoen

STLOSL

Lambert-St Louis

Sat 9/19

1:25 pm-11:30 pm

2 stops27h 05m

Oslo Gardermoen

Mon 9/28

5:05 pm-9:44 pm

2 stops35h 39m

$1,777

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 $437, 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 February instead. Flights to Oslo Gardermoen Airport in February, while not as cheap as those in January, still average around $468.

How far in advance should I book a flight from Illinois 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 $629 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 $580 on momondo.

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

You could potentially save up to 67% 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 05m

Direct flights

None
The fastest flight from Illinois to Oslo Gardermoen Airport takes 10h 05m
There are no direct flights from Illinois to Oslo Gardermoen Airport. There are no popular flight routes from Illinois to Oslo Gardermoen Airport.
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Frequently asked questions about flying from Illinois to Oslo Gardermoen Airport

  • 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
7.4
1,952 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $394Free CancellationRating
6.9
732 reviews
Search Icelandair flights
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,946 reviews
Search American Airlines flights
DeltaPriceFrom $510Free CancellationRating
7.8
8,504 reviews
Search Delta flights
KLMPriceFrom $516Free CancellationRating
7.8
1,558 reviews
Search KLM flights
LufthansaPriceFrom $524Free CancellationRating
6.8
8,196 reviews
Search Lufthansa flights
United AirlinesPriceFrom $527Free CancellationRating
7.4
10,106 reviews
Search United Airlines flights

Traveling to a place near Oslo?

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

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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