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$426+ Cheap flights from Duesseldorf Intl (DUS) to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/10. Fares are subject to change and may not be available on all flights or dates of travel.
DUS — ONT
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheap 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 September 19, 2025.

Round-trip from

$603
(United Airlines)

One-way from

$426
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$602
From Duesseldorf Intl to Ontario
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One-way flight from Duesseldorf Intl to Ontario
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Highest demand for flights based on searches. 6% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 19, 2025.

This United Airlines deal was found by Cheapflights users on 9/16. 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 9/306:00 amDUS - ONT
2 stops39h 13mUnited Airlines
Sun 10/198:16 pmONT - DUS
2 stops32h 49mUnited Airlines
Deal found 9/16$599
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/309:10 amDUS - ONT
2 stops22h 42mUnited Airlines
Wed 10/225:05 amONT - DUS
2 stops22h 35mUnited Airlines
Deal found 9/16$600
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/69:10 amDUS - ONT
2 stops22h 20mUnited Airlines
Thu 10/305:05 amONT - DUS
2 stops27h 35mUnited Airlines
Deal found 9/17$603
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/2910:45 amDUS - ONT
2 stops34h 28mUnited Airlines
Tue 10/76:00 amONT - DUS
2 stops27h 00mUnited Airlines
Deal found 9/16$604
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/69:10 amDUS - ONT
2 stops21h 14mUnited Airlines
Fri 10/311:40 pmONT - DUS
2 stops20h 25mUnited Airlines
Deal found 9/17$607
This United Airlines deal was found by Cheapflights users on 9/17. 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 9/299:10 amDUS - ONT
2 stops36h 03mUnited Airlines
Thu 10/235:05 amONT - DUS
2 stops24h 15mUnited Airlines
Deal found 9/17$608
This American Airlines deal was found by Cheapflights users on 9/17. 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.
Sat 11/87:00 amDUS - ONT
2 stops20h 21mAmerican Airlines
Mon 11/1712:53 pmONT - DUS
2 stops17h 17mAmerican Airlines
Deal found 9/17$609
This United Airlines deal was found by Cheapflights users on 9/17. 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 9/309:40 amDUS - ONT
2 stops22h 12mUnited Airlines
Tue 10/217:02 amONT - DUS
2 stops20h 38mUnited Airlines
Deal found 9/17$613
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/27:30 amDUS - ONT
2 stops18h 53mUnited Airlines
Sun 10/57:02 amONT - DUS
2 stops16h 13mUnited Airlines
Deal found 9/16$615
This United Airlines deal was found by Cheapflights users on 9/17. 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 9/309:40 amDUS - ONT
2 stops22h 12mUnited Airlines
Sat 10/256:36 pmONT - DUS
2 stops34h 59mUnited Airlines
Deal found 9/17$617
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/293:10 pmDUS - ONT
2 stops40h 42mUnited Airlines
Sun 10/198:16 pmONT - DUS
2 stops32h 49mUnited Airlines
Deal found 9/16$619
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/293:10 pmDUS - ONT
2 stops40h 42mUnited Airlines
Tue 10/214:15 pmONT - DUS
2 stops35h 25mUnited Airlines
Deal found 9/16$620

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 September 19, 2025.
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

Mon 9/29

9:10 am-12:13 pm

2 stops36h 03m

Ontario

Wed 10/22

7:02 am-9:25 am

2 stops17h 23m

$604

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 9/29

6:00 am-12:13 pm

2 stops39h 13m

Ontario

Mon 10/20

5:05 am-5:40 pm

2 stops27h 35m

$604

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 9/29

9:10 am-12:13 pm

2 stops36h 03m

Ontario

Thu 10/23

5:05 am-2:20 pm

2 stops24h 15m

$608

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Thu 2/26

10:50 am-10:57 pm

2 stops21h 07m

Ontario

Mon 3/2

5:40 am-1:45 pm

2 stops23h 05m

$609

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Sun 11/2

5:20 am-9:49 pm

2 stops24h 29m

Ontario

Sun 11/9

5:05 am-1:35 pm

2 stops23h 30m

$609

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Tue 9/30

9:40 am-10:52 pm

2 stops22h 12m

Ontario

Thu 10/23

7:02 am-8:15 am

2 stops16h 13m

$617

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Thu 10/2

7:10 am-10:16 pm

2 stops24h 06m

Ontario

Fri 10/24

11:59 pm-10:25 am

2 stops49h 26m

$635

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Wed 10/1

6:35 pm-6:54 pm

2 stops33h 19m

Ontario

Sun 10/26

11:59 pm-7:45 pm

2 stops35h 46m

$635

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Wed 10/1

7:15 am-6:54 pm

2 stops20h 39m

Ontario

Fri 10/24

11:59 pm-10:25 am

2 stops49h 26m

$635

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Thu 10/2

7:10 am-6:54 pm

2 stops20h 44m

Ontario

Sun 10/26

11:59 pm-7:45 pm

2 stops35h 46m

$635

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 22 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, August is the cheapest month in which you can book a flight from Duesseldorf Intl Airport to Ontario (average of $246). Flying from Duesseldorf Intl Airport to Ontario in March is currently the most expensive (average of $327). 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 36h 03m. Fly via United Airlines to get the fastest option. There are 5641 mi between Duesseldorf Intl Airport and Ontario.

  • 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, August is the cheapest month in which you can book a flight from Duesseldorf Intl Airport to Ontario (average of $246). Flying from Duesseldorf Intl Airport to Ontario in March is currently the most expensive (average of $327). 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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