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Bonn

$405+ Cheap flights from Ontario (ONT) to Bonn, Germany

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — FRA
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
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Cheap flight deals from Ontario to Bonn

Keep the following information in mind while searching for Ontario to Bonn flight deals. Data was last updated October 2, 2025.

Round-trip from

$604
(United Airlines)

One-way from

$405
(United Airlines)

Popular in

June

Cheapest in

February

Average price

$745
From Ontario to Bonn
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One-way flight from Ontario to Bonn
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Highest demand for flights based on searches. 19% potential increase in price ($213 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Bonn

Cheapest flights from Ontario to Bonn
Explore the most affordable flight options available from Ontario to Bonn. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 2, 2025.

This United Airlines deal was found by Cheapflights users on 10/2. 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 12/21:50 pmONT - DUS
2 stops19h 15mUnited Airlines
Fri 12/510:35 amDUS - ONT
2 stops20h 14mUnited Airlines
Deal found 10/2$604
This Vliegwinkel deal was found by Cheapflights users on 9/30. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:15 amONT - DUS
2 stops24h 45mMultiple Airlines
Mon 10/206:00 amDUS - ONT
2 stops25h 18mMultiple Airlines
Deal found 9/30$937
This United Airlines deal was found by Cheapflights users on 9/30. 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 11/146:38 pmONT - DUS
2 stops34h 12mUnited Airlines
Fri 11/216:30 amDUS - ONT
2 stops24h 19mUnited Airlines
Deal found 9/30$1,170
This United Airlines deal was found by Cheapflights users on 10/2. 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.
Sat 10/116:51 pmONT - DUS
2 stops38h 49mUnited Airlines
Sat 10/183:15 pmDUS - ONT
2 stops39h 09mUnited Airlines
Deal found 10/2$1,183
This United Airlines deal was found by Cheapflights users on 9/30. 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.
Sat 12/131:34 pmONT - DUS
2 stops35h 56mUnited Airlines
Tue 12/3010:50 amDUS - ONT
2 stops19h 17mUnited Airlines
Deal found 9/30$1,244
This United Airlines deal was found by Cheapflights users on 9/30. 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 12/151:34 pmONT - DUS
2 stops15h 11mUnited Airlines
Tue 1/62:35 pmDUS - ONT
2 stops36h 08mUnited Airlines
Deal found 9/30$1,576
This United Airlines deal was found by Cheapflights users on 10/1. 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 12/221:40 pmONT - DUS
2 stops59h 05mUnited Airlines
Sun 1/42:40 pmDUS - ONT
2 stops40h 12mUnited Airlines
Deal found 10/1$1,678
This Delta deal was found by Cheapflights users on 10/1. 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.
Sun 12/2111:15 amONT - DUS
2 stops17h 30mDelta
Sat 1/36:15 amDUS - ONT
2 stops18h 57mDelta
Deal found 10/1$1,901
This Delta deal was found by Cheapflights users on 10/1. 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.
Sun 12/2111:15 amONT - DUS
2 stops17h 30mDelta
Sun 1/46:15 amDUS - ONT
2 stops19h 08mDelta
Deal found 10/1$1,926
This KLM deal was found by Cheapflights users on 10/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:05 amONT - DUS
2 stops15h 35mKLM
Sat 1/38:15 amDUS - ONT
2 stops17h 53mKLM
Deal found 10/1$2,328
This KLM deal was found by Cheapflights users on 10/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:05 amONT - DUS
2 stops15h 35mKLM
Sun 1/48:15 amDUS - ONT
2 stops17h 53mKLM
Deal found 10/1$2,478
This KLM deal was found by Cheapflights users on 10/1. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/217:05 amONT - DUS
2 stops15h 35mKLM
Sat 1/38:15 amDUS - ONT
2 stops17h 53mKLM
Deal found 10/1$2,553

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Bonn 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 October 2, 2025.
Use the filters below to find and compare flights from Ontario to Bonn that are best for you.

Fly from

Ontario

Fly to

Bonn

Route

Depart

Return

Price

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Fri 3/27

1:00 pm-1:20 pm

2 stops40h 20m

Duesseldorf Intl

Tue 3/31

9:10 am-8:35 pm

2 stops20h 25m

$604

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Tue 12/2

1:50 pm-6:05 pm

2 stops19h 15m

Duesseldorf Intl

Fri 12/5

10:35 am-9:49 pm

2 stops20h 14m

$604

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Thu 10/16

8:15 am-6:00 pm

2 stops24h 45m

Duesseldorf Intl

Mon 10/20

6:00 am-10:18 pm

2 stops25h 18m

$937

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Fri 11/14

6:38 pm-1:50 pm

2 stops34h 12m

Duesseldorf Intl

Fri 11/21

6:30 am-9:49 pm

2 stops24h 19m

$1,170

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Sat 12/13

1:34 pm-10:30 am

2 stops35h 56m

Duesseldorf Intl

Tue 12/30

10:50 am-9:07 pm

2 stops19h 17m

$1,244

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Mon 12/15

1:34 pm-1:45 pm

2 stops15h 11m

Duesseldorf Intl

Tue 1/6

2:35 pm-5:43 pm

2 stops36h 08m

$1,576

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Mon 12/22

1:40 pm-9:45 am

2 stops59h 05m

Duesseldorf Intl

Sun 1/4

2:40 pm-9:52 pm

2 stops40h 12m

$1,678

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Mon 12/22

11:15 am-1:45 pm

2 stops17h 30m

Duesseldorf Intl

Sat 1/3

6:15 am-4:12 pm

2 stops18h 57m

$1,901

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Sun 12/21

11:15 am-1:45 pm

2 stops17h 30m

Duesseldorf Intl

Sat 1/3

6:15 am-4:12 pm

2 stops18h 57m

$1,901

OntarioDüsseldorf

ONT - DUS

ONTDUS

Ontario

Sun 12/21

11:15 am-1:45 pm

2 stops17h 30m

Duesseldorf Intl

Sun 1/4

6:15 am-4:23 pm

2 stops19h 08m

$1,926

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/30

Showing 1-10 of 15 results
1
2

Best time to book a flight from Ontario to Bonn

Have a flexible travel schedule? Discover the best time to fly to Bonn from Ontario 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 Ontario to Bonn

What is the cheapest month to book a flight from Ontario to Bonn?

Currently, January is the cheapest month in which you can book a flight from Ontario to Bonn (average of $729). Flying from Ontario to Bonn in June is currently the most expensive (average of $1,089). 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.

What is the cheapest time of day to fly from ONT to BN9?

Find hourly flight availability from Ontario to Bonn. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 2, 2025.

When flying from Ontario to Bonn, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Bonn. 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 from for flights from Ontario to Bonn?

    If you book a flight to Bonn from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to Bonn per day from 2 different airlines.

  • How long is the flight from Ontario to Bonn?

    United Airlines can get you from Ontario to Bonn in just under 40h 20m. Your travel time can differ by up to . There are 5641 mi between Ontario and Bonn.

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

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

  • How can I find direct flights from Ontario to Bonn?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Bonn 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 Ontario to Bonn?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Bonn (average of $729). Flying from Ontario to Bonn in June is currently the most expensive (average of $1,089). 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.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Ontario to Bonn

Discover the top 2 airlines that operate flights from Ontario to Bonn. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$712Average$902FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$719Average$830FlexibilityNo cancel feeOn-time70%

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