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Cheap flights from Illinois to Oslo from $254

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 1/24. 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
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 05m1 stop
Icelandair Logo
9:30 pm - 5:20 pm
OSL
-
ORD
26h 50m1 stop
$361Icelandair
Mon, Jan 12 - Sun, Jan 25
Icelandair Logo
6:30 pm - 8:35 pm
ORD
-
OSL
19h 05m1 stop
Icelandair Logo
1:10 pm - 5:20 pm
OSL
-
ORD
11h 10m1 stop
$384Icelandair
Sat, Jan 24 - Sat, Jan 31
Icelandair Logo
6:30 pm - 11:35 am
ORD
-
OSL
10h 05m1 stop
Icelandair Logo
9:30 pm - 5:20 pm
OSL
-
ORD
26h 50m1 stop
$389Icelandair
Mon, Jan 12 - Sun, Jan 25
British Airways Logo
2:19 pm - 11:30 pm
STL
-
OSL
26h 11m2 stops
British Airways Logo
8:30 pm - 6:17 pm
OSL
-
STL
28h 47m2 stops
$500British Airways
Mon, Apr 20 - Mon, Apr 27
British Airways Logo
2:19 pm - 6:40 pm
STL
-
OSL
21h 21m2 stops
British Airways Logo
5:05 pm - 7:30 pm
OSL
-
STL
33h 25m1 stop
$508British Airways
Mon, Apr 20 - Mon, Apr 27
Delta Logo
1:49 pm - 1:50 pm
MDW
-
OSL
17h 01m2 stops
Delta Logo
6:30 am - 5:40 pm
OSL
-
MDW
18h 10m2 stops
$517Delta
Wed, Mar 4 - Sun, Mar 8
Delta Logo
5:59 pm - 4:40 pm
MDW
-
OSL
15h 41m2 stops
Delta Logo
9:20 am - 6:05 pm
OSL
-
MDW
15h 45m2 stops
$523Delta
Wed, Apr 22 - Tue, Apr 28
United Airlines Logo
8:30 am - 11:00 am
STL
-
OSL
19h 30m2 stops
United Airlines Logo
6:15 am - 5:25 pm
OSL
-
STL
18h 10m2 stops
$525United Airlines
Sat, Jan 31 - Sat, Feb 7
United Airlines Logo
3:00 pm - 5:40 pm
PIA
-
OSL
19h 40m2 stops
United Airlines Logo
6:15 am - 12:38 pm
OSL
-
PIA
37h 23m2 stops
$525United Airlines
Fri, Jan 23 - Tue, Jan 27
KLM Logo
1:26 pm - 8:40 am
MDW
-
OSL
12h 14m2 stops
KLM Logo
6:30 am - 4:16 pm
OSL
-
MDW
16h 46m2 stops
$597KLM
Sat, Jan 31 - Sat, Feb 7

Icelandair flights from Illinois to Oslo Gardermoen Airport

Our best Icelandair deals on Illinois to Oslo Gardermoen Airport flight tickets
Icelandair
Jan 12
ORD6:30 pmChicago O'Hare Intl
10h 05m
1 stop
OSL11:35 amOslo Gardermoen
Jan 25
OSL9:30 pmOslo Gardermoen
26h 50m
1 stop
ORD5:20 pmChicago O'Hare Intl
$361
Find similar
Icelandair
Jan 24
ORD6:30 pmChicago O'Hare Intl
19h 05m
1 stop
OSL8:35 pmOslo Gardermoen
Jan 31
OSL1:10 pmOslo Gardermoen
11h 10m
1 stop
ORD5:20 pmChicago O'Hare Intl
$384
Find similar
Icelandair
Jan 12
ORD6:30 pmChicago O'Hare Intl
10h 05m
1 stop
OSL11:35 amOslo Gardermoen
Jan 25
OSL9:30 pmOslo Gardermoen
26h 50m
1 stop
ORD5:20 pmChicago O'Hare Intl
$389
Find similar

TAP AIR PORTUGAL flights from Illinois to Oslo Gardermoen Airport

Our best TAP AIR PORTUGAL deals on Illinois to Oslo Gardermoen Airport flight tickets
TAP AIR PORTUGAL
Feb 27
ORD8:15 pmChicago O'Hare Intl
14h 40m
1 stop
OSL5:55 pmOslo Gardermoen
Mar 10
OSL6:45 pmOslo Gardermoen
27h 15m
1 stop
ORD4:00 pmChicago O'Hare Intl
$434
Find similar
TAP AIR PORTUGAL
Apr 25
ORD6:15 pmChicago O'Hare Intl
16h 35m
1 stop
OSL5:50 pmOslo Gardermoen
May 2
OSL1:00 pmOslo Gardermoen
34h 00m
1 stop
ORD4:00 pmChicago O'Hare Intl
$491
Find similar

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 December 18, 2025.
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 1/12

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Sun 1/25

9:30 pm-5:20 pm

1 stop26h 50m

$361

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Sat 1/24

6:30 pm-8:35 pm

1 stop19h 05m

Oslo Gardermoen

Sat 1/31

1:10 pm-5:20 pm

1 stop11h 10m

$384

ChicagoOslo

ORD - OSL

ORDOSL

Chicago O'Hare Intl

Mon 1/12

6:30 pm-11:35 am

1 stop10h 05m

Oslo Gardermoen

Sun 1/25

9:30 pm-5:20 pm

1 stop26h 50m

$389

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 4/20

2:19 pm-11:30 pm

2 stops26h 11m

Oslo Gardermoen

Mon 4/27

8:30 pm-6:17 pm

2 stops28h 47m

$500

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Mon 4/20

2:19 pm-6:40 pm

2 stops21h 21m

Oslo Gardermoen

Mon 4/27

5:05 pm-7:30 pm

1 stop33h 25m

$508

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Wed 3/4

1:49 pm-1:50 pm

2 stops17h 01m

Oslo Gardermoen

Sun 3/8

6:30 am-5:40 pm

2 stops18h 10m

$517

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Wed 4/22

5:59 pm-4:40 pm

2 stops15h 41m

Oslo Gardermoen

Tue 4/28

9:20 am-6:05 pm

2 stops15h 45m

$523

St. LouisOslo

STL - OSL

STLOSL

Lambert-St Louis

Sat 1/31

8:30 am-11:00 am

2 stops19h 30m

Oslo Gardermoen

Sat 2/7

6:15 am-5:25 pm

2 stops18h 10m

$525

PeoriaOslo

PIA - OSL

PIAOSL

Greater Peoria

Fri 1/23

3:00 pm-5:40 pm

2 stops19h 40m

Oslo Gardermoen

Tue 1/27

6:15 am-12:38 pm

2 stops37h 23m

$525

ChicagoOslo

MDW - OSL

MDWOSL

Chicago Midway

Sat 1/31

1:26 pm-8:40 am

2 stops12h 14m

Oslo Gardermoen

Sat 2/7

6:30 am-4:16 pm

2 stops16h 46m

$597

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 November. Flight prices, which tend to average around $450, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Oslo Gardermoen Airport from Illinois during October instead. Flights to Oslo Gardermoen Airport in October, while not as cheap as those in November, still average around $522.

What is the cheapest day to depart on your flight to Oslo Gardermoen Airport?

According to our data, Sunday is the cheapest day to fly to Oslo Gardermoen Airport from Illinois. The lowest ticket price found for a Sunday departure recently was $668. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Illinois to Oslo Gardermoen Airport for around $755.

What is the cheapest time of day to depart on your flight to Oslo Gardermoen Airport?

Our most recent data shows that the best time of day to fly to Oslo Gardermoen Airport is at noon. Flights from Illinois to Oslo Gardermoen Airport during this time can be as low as $587. In contrast, the most expensive time of day to depart to Oslo Gardermoen Airport is in the morning when prices are around $730.

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 $637 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 $532 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 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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  • 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
1,609 reviews
Search Scandinavian Airlines flights
IcelandairPriceFrom $417Free CancellationRating
7.0
591 reviews
Search Icelandair flights
LufthansaPriceFrom $494Free CancellationRating
6.8
7,637 reviews
Search Lufthansa flights
American AirlinesPriceFrom $505Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
SWISSPriceFrom $513Free CancellationRating
7.5
1,817 reviews
Search SWISS flights
British AirwaysPriceFrom $530Free CancellationRating
6.7
7,586 reviews
Search British Airways flights
United AirlinesPriceFrom $532Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
DeltaPriceFrom $544Free CancellationRating
7.9
8,008 reviews
Search Delta flights
KLMPriceFrom $544Free CancellationRating
7.7
1,428 reviews
Search KLM flights
FinnairPriceFrom $555Free CancellationRating
7.6
1,338 reviews
Search Finnair 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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