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Cheap flights from Illinois to Oslo from $253

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 4/25. 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
10:25 pm - 3:25 pm
ORD
-
OSL
10h 00m
1 stop
Icelandair Logo
1:50 pm - 6:15 pm
OSL
-
ORD
11h 25m
1 stop
$508Icelandair
Fri, Apr 17 - Thu, Apr 30
Icelandair Logo
7:25 pm - 12:35 pm
ORD
-
OSL
10h 10m
1 stop
Icelandair Logo
4:30 pm - 6:15 pm
OSL
-
ORD
32h 45m
1 stop
$511Icelandair
Sun, Apr 12 - Sat, Apr 25
Icelandair Logo
7:25 pm - 12:35 pm
ORD
-
OSL
10h 10m
1 stop
Icelandair Logo
4:30 pm - 6:15 pm
OSL
-
ORD
32h 45m
1 stop
$534Icelandair
Sun, Apr 12 - Sat, Apr 25
Delta Logo
1:24 pm - 1:45 pm
MDW
-
OSL
17h 21m
2 stops
Delta Logo
6:30 am - 5:58 pm
OSL
-
MDW
18h 28m
2 stops
$714Delta
Mon, Apr 27 - Mon, May 4
Delta Logo
1:24 pm - 1:45 pm
MDW
-
OSL
17h 21m
2 stops
Delta Logo
6:30 am - 5:58 pm
OSL
-
MDW
18h 28m
2 stops
$715Delta
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
9:45 am - 11:30 pm
STL
-
OSL
30h 45m
2 stops
Multiple Airlines Logo
12:50 pm - 11:51 pm
OSL
-
STL
18h 01m
2 stops
$737Multiple Airlines
Sat, Aug 22 - Sat, Sep 5
Scandinavian Airlines Logo
3:42 pm - 12:55 pm
STL
-
OSL
14h 13m
2 stops
Scandinavian Airlines Logo
6:00 pm - 11:37 pm
OSL
-
STL
36h 37m
2 stops
$761Scandinavian Airlines
Thu, Aug 20 - Sun, Sep 6
Multiple Airlines Logo
6:55 pm - 11:30 pm
STL
-
OSL
21h 35m
2 stops
Multiple Airlines Logo
8:35 am - 7:46 pm
OSL
-
STL
18h 11m
2 stops
$782Multiple Airlines
Sat, Aug 8 - Wed, Aug 19
British Airways Logo
9:40 pm - 11:40 pm
STL
-
OSL
19h 00m
1 stop
British Airways Logo
11:15 am - 10:19 pm
OSL
-
STL
18h 04m
2 stops
$791British Airways
Sun, Apr 26 - Tue, May 12
British Airways Logo
9:40 pm - 11:40 pm
STL
-
OSL
19h 00m
1 stop
British Airways Logo
5:45 pm - 7:30 pm
OSL
-
STL
32h 45m
1 stop
$795British Airways
Sun, Aug 23 - Tue, Sep 8

Icelandair flights from Illinois to Oslo Gardermoen Airport

Our best Icelandair deals on Illinois to Oslo Gardermoen Airport flight tickets
Icelandair
Apr 17
ORD10:25 pmChicago O'Hare Intl
10h 00m
1 stop
OSL3:25 pmOslo Gardermoen
Apr 30
OSL1:50 pmOslo Gardermoen
11h 25m
1 stop
ORD6:15 pmChicago O'Hare Intl
$508
Icelandair
Apr 12
ORD7:25 pmChicago O'Hare Intl
10h 10m
1 stop
OSL12:35 pmOslo Gardermoen
Apr 25
OSL4:30 pmOslo Gardermoen
32h 45m
1 stop
ORD6:15 pmChicago O'Hare Intl
$511
Icelandair
Apr 12
ORD7:25 pmChicago O'Hare Intl
10h 10m
1 stop
OSL12:35 pmOslo Gardermoen
Apr 25
OSL4:30 pmOslo Gardermoen
32h 45m
1 stop
ORD6:15 pmChicago O'Hare Intl
$534

British Airways flights from Illinois to Oslo Gardermoen Airport

Our best British Airways deals on Illinois to Oslo Gardermoen Airport flight tickets
British Airways
Apr 26
STL9:40 pmLambert-St Louis
19h 00m
1 stop
OSL11:40 pmOslo Gardermoen
May 12
OSL11:15 amOslo Gardermoen
18h 04m
2 stops
STL10:19 pmLambert-St Louis
$791
British Airways
Aug 23
STL9:40 pmLambert-St Louis
19h 00m
1 stop
OSL11:40 pmOslo Gardermoen
Sep 8
OSL5:45 pmOslo Gardermoen
32h 45m
1 stop
STL7:30 pmLambert-St Louis
$795
British Airways
Aug 21
STL9:35 pmLambert-St Louis
11h 45m
1 stop
OSL4:20 pmOslo Gardermoen
Sep 8
OSL5:45 pmOslo Gardermoen
32h 45m
1 stop
STL7:30 pmLambert-St Louis
$845

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 April 1, 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 - OSL

ORDOSL

Chicago O'Hare Intl

Fri 4/17

10:25 pm-3:25 pm

1 stop10h 00m

Oslo Gardermoen

Thu 4/30

1:50 pm-6:15 pm

1 stop11h 25m

$508

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 4/12

7:25 pm-12:35 pm

1 stop10h 10m

Oslo Gardermoen

Sat 4/25

4:30 pm-6:15 pm

1 stop32h 45m

$511

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sun 4/12

7:25 pm-12:35 pm

1 stop10h 10m

Oslo Gardermoen

Sat 4/25

4:30 pm-6:15 pm

1 stop32h 45m

$534

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Mon 4/27

1:24 pm-1:45 pm

2 stops17h 21m

Oslo Gardermoen

Mon 5/4

6:30 am-5:58 pm

2 stops18h 28m

$714

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Mon 4/27

1:24 pm-1:45 pm

2 stops17h 21m

Oslo Gardermoen

Mon 5/4

6:30 am-5:58 pm

2 stops18h 28m

$715

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sat 8/22

9:45 am-11:30 pm

2 stops30h 45m

Oslo Gardermoen

Sat 9/5

12:50 pm-11:51 pm

2 stops18h 01m

$737

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Thu 8/20

3:42 pm-12:55 pm

2 stops14h 13m

Oslo Gardermoen

Sun 9/6

6:00 pm-11:37 pm

2 stops36h 37m

$761

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sat 8/8

6:55 pm-11:30 pm

2 stops21h 35m

Oslo Gardermoen

Wed 8/19

8:35 am-7:46 pm

2 stops18h 11m

$782

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 4/26

9:40 pm-11:40 pm

1 stop19h 00m

Oslo Gardermoen

Tue 5/12

11:15 am-10:19 pm

2 stops18h 04m

$791

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sun 8/23

9:40 pm-11:40 pm

1 stop19h 00m

Oslo Gardermoen

Tue 9/8

5:45 pm-7:30 pm

1 stop32h 45m

$795

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 $598 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 $476 on momondo.

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

You could potentially save up to 69% 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 $387Free CancellationRating
7.3
1,736 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $397Free CancellationRating
7.0
630 reviews
Search Icelandair flights
British AirwaysPriceFrom $471Free CancellationRating
6.7
7,842 reviews
Search British Airways flights
LufthansaPriceFrom $494Free CancellationRating
6.8
7,882 reviews
Search Lufthansa flights
American AirlinesPriceFrom $505Free CancellationRating
7.1
11,546 reviews
Search American Airlines flights
DeltaPriceFrom $513Free CancellationRating
7.9
8,366 reviews
Search Delta flights
SWISSPriceFrom $513Free CancellationRating
7.5
1,909 reviews
Search SWISS flights
United AirlinesPriceFrom $532Free CancellationRating
7.4
9,533 reviews
Search United Airlines flights
KLMPriceFrom $544Free CancellationRating
7.8
1,481 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.

An easier way to manage your Oslo Gardermoen Airport trip

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