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$542+ 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 5/24. Fares are subject to change and may not be available on all flights or dates of travel.
DUS — ONT
Apr 15 — Apr 221
Tue 4/15
Tue 4/22
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 April 10, 2025.

Round-trip from

$542
(Delta)

Popular in

July

Cheapest in

March

Average price

$723
From Duesseldorf Intl to Ontario
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Highest demand for flights based on searches. 12% potential increase in price ($98 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 10, 2025.

This Delta deal was found by Cheapflights users on 4/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:20 amDUS - ONT
2 stops24h 56mDelta
Sat 5/316:00 amONT - DUS
2 stops26h 40mDelta
Deal found 4/9$542
This American Airlines deal was found by Cheapflights users on 4/9. 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.
Wed 5/2810:50 amDUS - ONT
2 stops21h 53mAmerican Airlines
Tue 6/174:50 pmONT - DUS
2 stops19h 15mAmerican Airlines
Deal found 4/9$547
This United Airlines deal was found by Cheapflights users on 4/9. 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 4/281:30 pmDUS - ONT
2 stops37h 21mUnited Airlines
Sun 5/256:41 pmONT - DUS
2 stops32h 59mUnited Airlines
Deal found 4/9$625
This Iberia deal was found by Cheapflights users on 4/9. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1611:55 amDUS - ONT
2 stops20h 07mIberia
Tue 7/152:34 pmONT - DUS
2 stops19h 36mIberia
Deal found 4/9$727
This British Airways deal was found by Cheapflights users on 4/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/282:15 pmDUS - ONT
2 stops32h 34mBritish Airways
Sun 5/184:35 pmONT - DUS
2 stops19h 30mBritish Airways
Deal found 4/9$1,909
This Lufthansa deal was found by Cheapflights users on 4/9. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/299:30 amDUS - ONT
2 stops20h 12mMultiple Airlines
Tue 5/203:10 pmONT - DUS
2 stops20h 30mMultiple Airlines
Deal found 4/9$2,336

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 April 10, 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

Sat 5/24

6:20 am-10:16 pm

2 stops24h 56m

Ontario

Sat 5/31

6:00 am-5:40 pm

2 stops26h 40m

$542

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Wed 5/28

10:50 am-11:43 pm

2 stops21h 53m

Ontario

Tue 6/17

4:50 pm-9:05 pm

2 stops19h 15m

$547

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 4/28

1:30 pm-5:51 pm

2 stops37h 21m

Ontario

Sun 5/25

6:41 pm-12:40 pm

2 stops32h 59m

$625

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 6/16

11:55 am-11:02 pm

2 stops20h 07m

Ontario

Tue 7/15

2:34 pm-7:10 pm

2 stops19h 36m

$727

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Mon 4/28

2:15 pm-1:49 pm

2 stops32h 34m

Ontario

Sun 5/18

4:35 pm-9:05 pm

2 stops19h 30m

$1,909

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Tue 4/29

9:30 am-8:42 pm

2 stops20h 12m

Ontario

Tue 5/20

3:10 pm-8:40 pm

2 stops20h 30m

$2,336

DüsseldorfOntario

DUS - ONT

DUSONT

Duesseldorf Intl

Fri 7/4

7:10 am-10:30 pm

2 stops24h 20m

$1,420

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/9

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 $328). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated April 10, 2025.
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,907 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,634 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Iberia
7.0
Good
2,667 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
British Airways
6.6
Okay
6,735 reviews
Delta
8.0
Very good
7,907 reviews

Entertainment

7.9

Food

7.3

Comfort

8.0

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines flying from Duesseldorf Intl Airport to Ontario round-trip?

    Flying on Delta is currently your cheapest option to Ontario, with prices starting at $542. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $547 and $625, respectively.

  • 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 $328). 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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