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Cheap flights from Ontario to Oslo from $410

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Oslo departing on 2/18. 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 Ontario to Oslo

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 5:10 pmONT-OSL
25h 10m2 stops
United Airlines Logo
1:50 pm - 10:51 pmOSL-ONT
18h 01m2 stops
$538United Airlines
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Wed, Nov 19 - Wed, Nov 26
United Airlines Logo
1:29 pm - 5:50 pmONT-OSL
19h 21m2 stops
United Airlines Logo
1:45 pm - 10:51 pmOSL-ONT
18h 06m2 stops
$551United Airlines
Find Deal
Thu, Nov 6 - Thu, Nov 20
United Airlines Logo
10:40 am - 3:40 pmONT-OSL
20h 00m2 stops
United Airlines Logo
6:15 am - 8:17 pmOSL-ONT
22h 02m2 stops
$552United Airlines
Find Deal
Thu, Mar 5 - Thu, Mar 19
American Airlines Logo
2:51 pm - 6:40 pmONT-OSL
18h 49m2 stops
American Airlines Logo
6:55 am - 10:29 pmOSL-ONT
24h 34m2 stops
$593American Airlines
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Mon, Oct 20 - Wed, Nov 5
British Airways Logo
3:09 pm - 5:30 pmONT-OSL
17h 21m2 stops
British Airways Logo
8:15 am - 5:51 pmOSL-ONT
18h 36m2 stops
$616British Airways
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Fri, Feb 6 - Fri, Feb 20
British Airways Logo
4:47 pm - 6:40 pmONT-OSL
16h 53m2 stops
British Airways Logo
11:35 am - 10:49 pmOSL-ONT
20h 14m2 stops
$628British Airways
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Mon, Jan 5 - Mon, Jan 19
Iberia Logo
10:58 am - 2:10 pmONT-OSL
18h 12m2 stops
Iberia Logo
3:00 pm - 2:18 pmOSL-ONT
32h 18m2 stops
$675Iberia
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Wed, Jan 7 - Wed, Jan 21
Delta Logo
10:30 pm - 12:40 pmONT-OSL
54h 10m2 stops
Delta Logo
2:15 pm - 9:14 pmOSL-ONT
39h 59m2 stops
$677Delta
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Fri, Mar 27 - Tue, Mar 31
Delta Logo
10:30 pm - 12:40 pmONT-OSL
54h 10m2 stops
Delta Logo
2:15 pm - 9:14 pmOSL-ONT
39h 59m2 stops
$734Delta
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Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
11:55 pm - 4:35 pmONT-OSL
31h 40m2 stops
American Airlines Logo
12:50 pm - 5:49 pmOSL-ONT
37h 59m2 stops
$3,772American Airlines
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Mon, Mar 2 - Thu, Apr 2

United Airlines flights from Ontario to Oslo Gardermoen Airport

Our best United Airlines deals on Ontario to Oslo Gardermoen Airport flight tickets
United Airlines
Nov 19
ONT7:00 amOntario
25h 10m
2 stops
OSL5:10 pmOslo Gardermoen
Nov 26
OSL1:50 pmOslo Gardermoen
18h 01m
2 stops
ONT10:51 pmOntario
$538
Find similar
United Airlines
Nov 6
ONT1:29 pmOntario
19h 21m
2 stops
OSL5:50 pmOslo Gardermoen
Nov 20
OSL1:45 pmOslo Gardermoen
18h 06m
2 stops
ONT10:51 pmOntario
$551
Find similar
United Airlines
Mar 5
ONT10:40 amOntario
20h 00m
2 stops
OSL3:40 pmOslo Gardermoen
Mar 19
OSL6:15 amOslo Gardermoen
22h 02m
2 stops
ONT8:17 pmOntario
$552
Find similar

Delta flights from Ontario to Oslo Gardermoen Airport

Our best Delta deals on Ontario to Oslo Gardermoen Airport flight tickets
Delta
Mar 27
ONT10:30 pmOntario
54h 10m
2 stops
OSL12:40 pmOslo Gardermoen
Mar 31
OSL2:15 pmOslo Gardermoen
39h 59m
2 stops
ONT9:14 pmOntario
$677
Find similar
Delta
Mar 27
ONT10:30 pmOntario
54h 10m
2 stops
OSL12:40 pmOslo Gardermoen
Mar 31
OSL2:15 pmOslo Gardermoen
39h 59m
2 stops
ONT9:14 pmOntario
$734
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario 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 October 7, 2025.
Use the filters below to find and compare flights from Ontario to Oslo Gardermoen Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Wed 11/19

7:00 am-5:10 pm

2 stops25h 10m

Oslo Gardermoen

Wed 11/26

1:50 pm-10:51 pm

2 stops18h 01m

$538

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Thu 11/6

1:29 pm-5:50 pm

2 stops19h 21m

Oslo Gardermoen

Thu 11/20

1:45 pm-10:51 pm

2 stops18h 06m

$551

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Thu 3/5

10:40 am-3:40 pm

2 stops20h 00m

Oslo Gardermoen

Thu 3/19

6:15 am-8:17 pm

2 stops22h 02m

$552

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Mon 10/20

2:51 pm-6:40 pm

2 stops18h 49m

Oslo Gardermoen

Wed 11/5

6:55 am-10:29 pm

2 stops24h 34m

$593

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Fri 2/6

3:09 pm-5:30 pm

2 stops17h 21m

Oslo Gardermoen

Fri 2/20

8:15 am-5:51 pm

2 stops18h 36m

$616

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Mon 1/5

4:47 pm-6:40 pm

2 stops16h 53m

Oslo Gardermoen

Mon 1/19

11:35 am-10:49 pm

2 stops20h 14m

$628

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Wed 1/7

10:58 am-2:10 pm

2 stops18h 12m

Oslo Gardermoen

Wed 1/21

3:00 pm-2:18 pm

2 stops32h 18m

$675

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Fri 3/27

10:30 pm-12:40 pm

2 stops54h 10m

Oslo Gardermoen

Tue 3/31

2:15 pm-9:14 pm

2 stops39h 59m

$677

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Fri 3/27

10:30 pm-12:40 pm

2 stops54h 10m

Oslo Gardermoen

Tue 3/31

2:15 pm-9:14 pm

2 stops39h 59m

$734

OntarioOslo

ONT - OSL

ONTOSL

Ontario

Mon 3/2

11:55 pm-4:35 pm

2 stops31h 40m

Oslo Gardermoen

Thu 4/2

12:50 pm-5:49 pm

2 stops37h 59m

$3,772

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Oslo from

How to get the cheapest flight ticket from Ontario 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 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 in the morning. Flights from Ontario to Oslo Gardermoen Airport during this time can be as low as $686. In contrast, the most expensive time of day to depart to Oslo Gardermoen Airport is in the afternoon when prices are around $947.

When to book flights from Ontario to Oslo Gardermoen Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Oslo Gardermoen Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Oslo Gardermoen Airport (ONT to OSL) flight deals and tips

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

Direct flights

None
There are no direct flights from Ontario to Oslo Gardermoen Airport. There are no popular flight routes from Ontario to Oslo Gardermoen Airport.
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  • How far is Ontario to Oslo Gardermoen by plane?

    The straight-line distance from Ontario to Oslo Gardermoen is 5303.0 mi. Flights usually cover this in 15h 20m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Ontario Airport to Oslo Gardermoen Airport are updated daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Oslo Gardermoen Airport.

  • What documentation or ID do you need to fly to Oslo Gardermoen Airport?

    The necessary travel and health documents for your Oslo Gardermoen Airport 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.

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 Ontario to Oslo?

Finding the right flight to Oslo from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Oslo quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Oslo from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Oslo from Ontario.

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

Yes momondo offers price alerts on flights to Oslo from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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