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Cheap flights from Illinois to Oslo from $241

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 8/17. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Oslo

Cheap round-trip flights

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
7:15 pm - 2:05 pm
ORD
-
TRF
11h 50m
1 stop
Scandinavian Airlines Logo
6:00 am - 4:45 pm
TRF
-
ORD
17h 45m
1 stop
$503Scandinavian Airlines
Tue, Dec 1 - Mon, Dec 7
Icelandair Logo
7:25 pm - 3:25 pm
ORD
-
OSL
13h 00m
1 stop
Icelandair Logo
4:30 pm - 9:25 pm
OSL
-
ORD
11h 55m
1 stop
$504Icelandair
Mon, Aug 10 - Mon, Aug 24
Scandinavian Airlines Logo
7:15 pm - 1:10 pm
ORD
-
OSL
10h 55m
1 stop
Scandinavian Airlines Logo
9:05 pm - 4:45 pm
OSL
-
ORD
26h 40m
1 stop
$506Scandinavian Airlines
Tue, Dec 1 - Sun, Dec 6
Delta Logo
1:51 pm - 11:50 am
MDW
-
OSL
14h 59m
2 stops
Delta Logo
6:30 am - 6:01 pm
OSL
-
MDW
18h 31m
2 stops
$746Delta
Wed, Aug 19 - Wed, Aug 26
Delta Logo
6:42 pm - 4:20 pm
MDW
-
OSL
14h 38m
2 stops
Delta Logo
6:30 am - 6:33 pm
OSL
-
MDW
19h 03m
2 stops
$750Delta
Wed, Aug 12 - Thu, Aug 20
United Airlines Logo
12:59 pm - 5:55 pm
STL
-
OSL
21h 56m
2 stops
United Airlines Logo
6:35 am - 1:25 pm
OSL
-
STL
13h 50m
1 stop
$809United Airlines
Sun, Aug 16 - Wed, Aug 26
Air Canada Logo
12:10 pm - 5:55 pm
STL
-
OSL
22h 45m
2 stops
Air Canada Logo
6:35 am - 6:42 pm
OSL
-
STL
43h 07m
2 stops
$810Air Canada
Mon, Aug 17 - Wed, Aug 26
United Airlines Logo
8:50 am - 2:50 pm
STL
-
OSL
23h 00m
2 stops
United Airlines Logo
6:35 am - 6:42 pm
OSL
-
STL
19h 07m
2 stops
$812United Airlines
Sun, Aug 16 - Wed, Aug 26
Lufthansa Logo
6:54 pm - 6:25 pm
STL
-
OSL
40h 31m
2 stops
Lufthansa Logo
6:35 am - 1:25 pm
OSL
-
STL
13h 50m
1 stop
$836Lufthansa
Sat, Aug 15 - Wed, Aug 26
Lufthansa Logo
6:54 pm - 6:25 pm
STL
-
OSL
40h 31m
2 stops
Lufthansa Logo
6:35 am - 10:59 pm
OSL
-
STL
23h 24m
2 stops
$841Lufthansa
Sat, Aug 15 - Wed, Aug 26

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Icelandair flights from Illinois to Oslo

Our best Icelandair deals on Illinois to Oslo flight tickets
Icelandair
Aug 10
ORD7:25 pmChicago O'Hare Intl
13h 00m
1 stop
OSL3:25 pmOslo Gardermoen
Aug 24
OSL4:30 pmOslo Gardermoen
11h 55m
1 stop
ORD9:25 pmChicago O'Hare Intl
$504
Icelandair
Aug 10
ORD7:25 pmChicago O'Hare Intl
10h 10m
1 stop
OSL12:35 pmOslo Gardermoen
Aug 24
OSL4:30 pmOslo Gardermoen
32h 45m
1 stop
ORD6:15 pmChicago O'Hare Intl
$509
Icelandair
Nov 30
ORD6:30 pmChicago O'Hare Intl
10h 05m
1 stop
OSL11:35 amOslo Gardermoen
Dec 7
OSL1:10 pmOslo Gardermoen
11h 10m
1 stop
ORD5:20 pmChicago O'Hare Intl
$517

Scandinavian Airlines flights from Illinois to Oslo

Our best Scandinavian Airlines deals on Illinois to Oslo flight tickets
Scandinavian Airlines
Dec 1
ORD7:15 pmChicago O'Hare Intl
11h 50m
1 stop
TRF2:05 pmOslo Sandefjord
Dec 7
TRF6:00 amOslo Sandefjord
17h 45m
1 stop
ORD4:45 pmChicago O'Hare Intl
$503
Scandinavian Airlines
Dec 1
ORD7:15 pmChicago O'Hare Intl
10h 55m
1 stop
OSL1:10 pmOslo Gardermoen
Dec 6
OSL9:05 pmOslo Gardermoen
26h 40m
1 stop
ORD4:45 pmChicago O'Hare Intl
$506
Scandinavian Airlines
Nov 30
ORD7:15 pmChicago O'Hare Intl
22h 15m
1 stop
TRF12:30 amOslo Sandefjord
Dec 7
TRF6:00 amOslo Sandefjord
17h 45m
1 stop
ORD4:45 pmChicago O'Hare Intl
$516

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 July 3, 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

Cheapest round-trip

ChicagoOslo

ORD - TRF

ORDTRF

Chicago O'Hare Intl

Tue 12/1

7:15 pm-2:05 pm

1 stop11h 50m

Oslo Sandefjord

Mon 12/7

6:00 am-4:45 pm

1 stop17h 45m

$503
Quickest round-trip

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 8/10

7:25 pm-3:25 pm

1 stop13h 00m

Oslo Gardermoen

Mon 8/24

4:30 pm-9:25 pm

1 stop11h 55m

$504

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Tue 12/1

7:15 pm-1:10 pm

1 stop10h 55m

Oslo Gardermoen

Sun 12/6

9:05 pm-4:45 pm

1 stop26h 40m

$506

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Wed 8/19

1:51 pm-11:50 am

2 stops14h 59m

Oslo Gardermoen

Wed 8/26

6:30 am-6:01 pm

2 stops18h 31m

$746

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Wed 8/12

6:42 pm-4:20 pm

2 stops14h 38m

Oslo Gardermoen

Thu 8/20

6:30 am-6:33 pm

2 stops19h 03m

$750

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 8/16

12:59 pm-5:55 pm

2 stops21h 56m

Oslo Gardermoen

Wed 8/26

6:35 am-1:25 pm

1 stop13h 50m

$809

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 8/17

12:10 pm-5:55 pm

2 stops22h 45m

Oslo Gardermoen

Wed 8/26

6:35 am-6:42 pm

2 stops43h 07m

$810

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 8/16

8:50 am-2:50 pm

2 stops23h 00m

Oslo Gardermoen

Wed 8/26

6:35 am-6:42 pm

2 stops19h 07m

$812

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sat 8/15

6:54 pm-6:25 pm

2 stops40h 31m

Oslo Gardermoen

Wed 8/26

6:35 am-1:25 pm

1 stop13h 50m

$836

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sat 8/15

6:54 pm-6:25 pm

2 stops40h 31m

Oslo Gardermoen

Wed 8/26

6:35 am-10:59 pm

2 stops23h 24m

$841

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 September is, on average, the cheapest month to fly to Oslo from Illinois, with most prices found around $225. If you’re not able to fly to Oslo in September, then March is your next best option. Flight prices from Illinois to Oslo during March average around $236.

How far in advance should I book a flight from Illinois 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 $612 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 $558 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

11h 05m

Direct flights

None
The fastest flight from Illinois to Oslo takes 11h 05m
There are no direct flights from Illinois to Oslo. There are no popular flight routes from Illinois to Oslo.
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Frequently asked questions about flying from Illinois to Oslo

  • 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 $387Free CancellationRating
7.4
1,861 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $394Free CancellationRating
7.0
695 reviews
Search Icelandair flights
LufthansaPriceFrom $494Free CancellationRating
6.8
8,109 reviews
Search Lufthansa flights
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,766 reviews
Search American Airlines flights
DeltaPriceFrom $510Free CancellationRating
7.8
8,452 reviews
Search Delta flights
KLMPriceFrom $516Free CancellationRating
7.8
1,532 reviews
Search KLM flights
United AirlinesPriceFrom $527Free CancellationRating
7.4
9,926 reviews
Search United Airlines 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