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Cheap flights from Oslo Gardermoen Airport to Illinois from $335

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oslo Gardermoen Airport to Illinois departing on 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Oslo Gardermoen Airport to Illinois

Cheap round-trip flights

American Airlines Logo
11:15 am - 5:00 pmOSL-ORD
12h 45m1 stop
American Airlines Logo
10:35 pm - 11:25 pmORD-OSL
17h 50m1 stop
$458American Airlines
Find Deal
mar., sep. 23 - mar., sep. 30
British Airways Logo
11:35 am - 11:53 pmOSL-ORD
19h 18m2 stops
British Airways Logo
10:35 pm - 11:40 pmORD-OSL
18h 05m1 stop
$460British Airways
Find Deal
lun., oct. 6 - dom., oct. 19
Delta Logo
9:20 am - 2:10 pmOSL-ORD
11h 50m1 stop
Delta Logo
1:25 pm - 1:50 pmORD-OSL
18h 25m2 stops
$461Delta
Find Deal
jue., oct. 23 - mar., oct. 28
Delta Logo
6:30 am - 2:10 pmOSL-ORD
14h 40m1 stop
Delta Logo
2:05 pm - 1:45 pmORD-OSL
16h 40m2 stops
$466Delta
Find Deal
mar., sep. 23 - vie., sep. 26
Scandinavian Airlines Logo
9:55 am - 4:10 pmOSL-ORD
13h 15m1 stop
Scandinavian Airlines Logo
8:20 pm - 2:15 pmORD-OSL
11h 55m1 stop
$516Scandinavian Airlines
Find Deal
mar., oct. 21 - sáb., nov. 1
Icelandair Logo
1:50 pm - 6:15 pmOSL-ORD
11h 25m1 stop
Icelandair Logo
7:30 pm - 11:35 amORD-OSL
10h 05m1 stop
$533Icelandair
Find Deal
mar., oct. 21 - sáb., nov. 1
Lufthansa Logo
6:55 pm - 12:55 pmOSL-ORD
25h 00m2 stops
Lufthansa Logo
6:50 pm - 12:55 pmORD-OSL
36h 05m2 stops
$568Lufthansa
Find Deal
mar., oct. 14 - dom., oct. 26
Icelandair Logo
9:30 pm - 5:20 pmOSL-ORD
26h 50m1 stop
Icelandair Logo
6:30 pm - 11:35 amORD-OSL
10h 05m1 stop
$1,610Icelandair
Find Deal
dom., nov. 16 - lun., nov. 24
Scandinavian Airlines Logo
8:00 am - 4:45 pmOSL-ORD
15h 45m1 stop
Scandinavian Airlines Logo
7:20 pm - 1:10 pmORD-OSL
10h 50m1 stop
$1,728Scandinavian Airlines
Find Deal
sáb., nov. 15 - mié., nov. 26
Lufthansa Logo
6:35 am - 11:44 pmOSL-STL
24h 09m2 stops
Lufthansa Logo
3:50 pm - 3:40 pmSTL-OSL
16h 50m1 stop
$1,811Lufthansa
Find Deal
sáb., sep. 6 - vie., nov. 7

American Airlines flights from Oslo Gardermoen Airport to Illinois

Our best American Airlines deals on Oslo Gardermoen Airport to Illinois flight tickets
American Airlines
Sep 23
OSL11:15 amOslo Gardermoen
12h 45m
1 stop
ORD5:00 pmChicago O'Hare Intl
Sep 30
ORD10:35 pmChicago O'Hare Intl
17h 50m
1 stop
OSL11:25 pmOslo Gardermoen
$458
Find similar
American Airlines
Sep 23
OSL7:45 amOslo Gardermoen
16h 15m
1 stop
ORD5:00 pmChicago O'Hare Intl
Sep 30
ORD1:59 pmChicago O'Hare Intl
13h 36m
2 stops
OSL10:35 amOslo Gardermoen
$463
Find similar
American Airlines
Oct 6
OSL8:00 amOslo Gardermoen
21h 31m
2 stops
ORD10:31 pmChicago O'Hare Intl
Oct 19
ORD8:14 amChicago O'Hare Intl
19h 21m
2 stops
OSL10:35 amOslo Gardermoen
$467
Find similar

Delta flights from Oslo Gardermoen Airport to Illinois

Our best Delta deals on Oslo Gardermoen Airport to Illinois flight tickets
Delta
Oct 23
OSL9:20 amOslo Gardermoen
11h 50m
1 stop
ORD2:10 pmChicago O'Hare Intl
Oct 28
ORD1:25 pmChicago O'Hare Intl
18h 25m
2 stops
OSL1:50 pmOslo Gardermoen
$461
Find similar
Delta
Sep 23
OSL6:30 amOslo Gardermoen
14h 40m
1 stop
ORD2:10 pmChicago O'Hare Intl
Sep 26
ORD2:05 pmChicago O'Hare Intl
16h 40m
2 stops
OSL1:45 pmOslo Gardermoen
$466
Find similar
Delta
Oct 23
OSL6:30 amOslo Gardermoen
18h 13m
2 stops
MDW5:43 pmChicago Midway
Oct 28
MDW5:04 pmChicago Midway
14h 46m
2 stops
OSL1:50 pmOslo Gardermoen
$467
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Oslo Gardermoen Airport to Illinois 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 agosto 25, 2025.
Use the filters below to find and compare flights from Oslo Gardermoen Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 9/23

11:15 am-5:00 pm

1 stop12h 45m

Chicago O'Hare Intl

mar. 9/30

10:35 pm-11:25 pm

1 stop17h 50m

$458

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

lun. 10/6

11:35 am-11:53 pm

2 stops19h 18m

Chicago O'Hare Intl

dom. 10/19

10:35 pm-11:40 pm

1 stop18h 05m

$460

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

jue. 10/23

9:20 am-2:10 pm

1 stop11h 50m

Chicago O'Hare Intl

mar. 10/28

1:25 pm-1:50 pm

2 stops18h 25m

$461

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 9/23

6:30 am-2:10 pm

1 stop14h 40m

Chicago O'Hare Intl

vie. 9/26

2:05 pm-1:45 pm

2 stops16h 40m

$466

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 10/21

9:55 am-4:10 pm

1 stop13h 15m

Chicago O'Hare Intl

sáb. 11/1

8:20 pm-2:15 pm

1 stop11h 55m

$516

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 10/21

1:50 pm-6:15 pm

1 stop11h 25m

Chicago O'Hare Intl

sáb. 11/1

7:30 pm-11:35 am

1 stop10h 05m

$533

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

mar. 10/14

6:55 pm-12:55 pm

2 stops25h 00m

Chicago O'Hare Intl

dom. 10/26

6:50 pm-12:55 pm

2 stops36h 05m

$568

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

dom. 11/16

9:30 pm-5:20 pm

1 stop26h 50m

Chicago O'Hare Intl

lun. 11/24

6:30 pm-11:35 am

1 stop10h 05m

$1,610

OsloChicago

OSL - ORD

OSLORD

Oslo Gardermoen

sáb. 11/15

8:00 am-4:45 pm

1 stop15h 45m

Chicago O'Hare Intl

mié. 11/26

7:20 pm-1:10 pm

1 stop10h 50m

$1,728

OsloSt. Louis

OSL - STL

OSLSTL

Oslo Gardermoen

sáb. 9/6

6:35 am-11:44 pm

2 stops24h 09m

Lambert-St Louis

vie. 11/7

3:50 pm-3:40 pm

1 stop16h 50m

$1,811

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 Illinois from

How to get the cheapest flight ticket from Oslo Gardermoen Airport to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Oslo Gardermoen Airport is in November. Flight prices, which tend to average around $394, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $423.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Oslo Gardermoen Airport to Illinois is on a Thursday when prices can be found for as low as $467. Flights from Oslo Gardermoen Airport to Illinois on a Saturday will generally be more expensive and average around $583. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the morning. Flights from Oslo Gardermoen Airport to Illinois during this time can be as low as $491. Flights in the afternoon are often more expensive with an average ticket price of $662.

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Oslo Gardermoen Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $574 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Oslo Gardermoen Airport for as low as $448 on momondo.

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

You could potentially save up to 8% on your flight if you consider stops on a Oslo Gardermoen Airport to Illinois flight.

Cheap Oslo Gardermoen Airport to Illinois flight deals and tips

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

Direct flights

None
There are no direct flights from Oslo Gardermoen Airport to Illinois. There are no popular flight routes from Oslo Gardermoen Airport to Illinois.
Search flight deals

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

    Prices for flights from Oslo Gardermoen Airport to Illinois were last updated today.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oslo Gardermoen Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Oslo to Illinois?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Oslo to Illinois. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Oslo to Illinois with flexible booking policies on momondo?

Flights from Oslo to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Oslo to Illinois?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Oslo to Illinois.

I’m not ready to book a flight from Oslo to Illinois right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Illinois, momondo offers a useful price alert feature which will track prices for flights to Illinois from Oslo and alert you when they change.

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