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$570+ Cheap flights from Duesseldorf Intl (DUS) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
DUS — ONT
Feb 24 — Mar 31
Tue 2/24
Tue 3/3
1 adult, Economy
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Cheap flight deals from Duesseldorf Intl to Ontario

Cheapest flights from Duesseldorf Intl to Ontario
Explore the most affordable flight options available from Duesseldorf Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 25, 2026.

This American Airlines deal was found by Cheapflights users on 1/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2710:15 am
DUS
-
ONT
2 stops35h 20m
American Airlines
Sat 10/318:00 pm
ONT
-
DUS
2 stops39h 50m
American Airlines
Deal found 1/23$570
This United Airlines deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1410:50 am
DUS
-
ONT
2 stops20h 36m
United Airlines
Fri 4/247:00 am
ONT
-
DUS
2 stops16h 40m
United Airlines
Deal found 1/24$572
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2010:35 am
DUS
-
ONT
2 stops20h 22m
United Airlines
Thu 3/261:50 pm
ONT
-
DUS
2 stops18h 50m
United Airlines
Deal found 1/25$826
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:20 am
DUS
-
ONT
2 stops20h 23m
United Airlines
Mon 4/611:05 am
ONT
-
DUS
2 stops16h 35m
United Airlines
Deal found 1/25$849
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/203:20 pm
DUS
-
ONT
2 stops16h 39m
United Airlines
Mon 5/255:00 am
ONT
-
DUS
2 stops24h 30m
United Airlines
Deal found 1/25$988
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/299:20 am
DUS
-
ONT
2 stops22h 06m
United Airlines
Tue 7/76:00 am
ONT
-
DUS
2 stops21h 40m
United Airlines
Deal found 1/25$997
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/299:20 am
DUS
-
ONT
2 stops22h 06m
United Airlines
Wed 7/89:45 am
ONT
-
DUS
2 stops23h 00m
United Airlines
Deal found 1/25$1,000
This oojo deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:15 am
DUS
-
ONT
2 stops21h 08m
British Airways
Sun 11/294:47 pm
ONT
-
DUS
2 stops18h 03m
British Airways
Deal found 1/25$1,005
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/286:20 am
DUS
-
ONT
2 stops22h 57m
United Airlines
Tue 7/76:00 am
ONT
-
DUS
2 stops21h 40m
United Airlines
Deal found 1/25$1,009
This oojo deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/97:05 am
DUS
-
ONT
2 stops23h 02m
British Airways
Tue 3/243:19 pm
ONT
-
DUS
2 stops18h 46m
British Airways
Deal found 1/24$1,010
This American Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:40 am
DUS
-
ONT
2 stops20h 11m
American Airlines
Wed 7/81:10 pm
ONT
-
DUS
2 stops22h 50m
American Airlines
Deal found 1/25$1,073

Find flight deals from Duesseldorf Intl to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Duesseldorf Intl (DUS) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 25, 2026.

Round-trip from

$558
(Billigflug)

Popular in

July

Cheapest in

September

Average price

$716
From Duesseldorf Intl to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($97 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Duesseldorf Intl to Ontario 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, Cheapflights users made 2,558,603 searches. Data last updated January 25, 2026.
Use the filters below to find and compare flights from Duesseldorf Intl Airport to Ontario that are best for you.

Fly from

Duesseldorf Intl

Fly to

Ontario

Route

Depart

Return

Price

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Tue 4/14

10:50 am-10:26 pm

2 stops20h 36m

Ontario

Fri 4/24

7:00 am-8:40 am

2 stops16h 40m

$572

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Fri 3/20

10:35 am-10:57 pm

2 stops20h 22m

Ontario

Thu 3/26

1:50 pm-4:40 pm

2 stops18h 50m

$826

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Wed 5/20

3:20 pm-10:59 pm

2 stops16h 39m

Ontario

Mon 5/25

5:00 am-2:30 pm

2 stops24h 30m

$988

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 6/29

9:20 am-10:26 pm

2 stops22h 06m

Ontario

Tue 7/7

6:00 am-12:40 pm

2 stops21h 40m

$997

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 6/29

9:20 am-10:26 pm

2 stops22h 06m

Ontario

Wed 7/8

9:45 am-5:45 pm

2 stops23h 00m

$1,000

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 6/29

10:40 am-9:51 pm

2 stops20h 11m

Ontario

Wed 7/8

1:10 pm-9:00 pm

2 stops22h 50m

$1,073

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 6/29

7:00 am-9:51 pm

2 stops23h 51m

Ontario

Tue 7/7

1:10 pm-9:00 pm

2 stops22h 50m

$1,073

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Sun 6/28

2:10 pm-9:51 pm

2 stops40h 41m

Ontario

Tue 7/7

1:10 pm-9:00 pm

2 stops22h 50m

$1,082

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Sun 6/28

9:50 am-11:06 pm

2 stops22h 16m

Ontario

Wed 7/8

9:45 am-2:15 pm

2 stops19h 30m

$1,117

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Wed 5/27

10:40 am-8:17 pm

2 stops18h 37m

Ontario

Mon 6/1

1:33 pm-2:35 pm

2 stops16h 02m

$1,120

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 23 results
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Best time to book a flight from Duesseldorf Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Duesseldorf Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Duesseldorf Intl Airport to Ontario

What is the cheapest month to book a flight from Duesseldorf Intl Airport to Ontario?

Currently, September is the cheapest month in which you can book a flight from Duesseldorf Intl Airport to Ontario (average of $502). Flying from Duesseldorf Intl Airport to Ontario in December is currently the most expensive (average of $593). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Duesseldorf Intl to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Duesseldorf Intl?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Duesseldorf Intl to Ontario. 0 airlines have flights to Ontario from Duesseldorf Intl on a regular basis. Booking flights from Duesseldorf Intl to Ontario should not be difficult; the airport handles an average of 0 inbound flights from Duesseldorf Intl per day.

  • How long is the flight from Duesseldorf Intl Airport to Ontario?

    There are many flights that can get you from Duesseldorf Intl Airport to Ontario in 20h 11m. Fly via United Airlines or American Airlines to get the fastest option. There are 5641 mi between Duesseldorf Intl Airport and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Duesseldorf Intl to Ontario that include hotel bookings?

    Yes. In addition to deals on Duesseldorf Intl to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Duesseldorf Intl to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Duesseldorf Intl to Ontario.

  • Can I find deals for business class flights from Duesseldorf Intl to Ontario?

    Yes. Cheapflights offers flight deals from Duesseldorf Intl to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Duesseldorf Intl Airport to Ontario?

    Currently, September is the cheapest month in which you can book a flight from Duesseldorf Intl Airport to Ontario (average of $502). Flying from Duesseldorf Intl Airport to Ontario in December is currently the most expensive (average of $593). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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