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$663+ Cheap flights from Cologne (CGN) 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ONT
ene. 7 — ene. 141
mié. 1/7
mié. 1/14
1 adult, Economy
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Cheap flight deals from Cologne to Ontario

Cheapest flights from Cologne to Ontario
Explore the most affordable flight options available from Cologne to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 8, 2025.

This American Airlines deal was found by Cheapflights users on 12/7. 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.
sáb. 12/2712:40 pmCGN - ONT
2 stops29h 58mAmerican Airlines
mar. 1/63:09 pmONT - CGN
2 stops16h 21mAmerican Airlines
Deal found 12/7$2,739

Find flight deals from Cologne to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Cologne (CGN) 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 diciembre 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$663
(British Airways)

Popular in

July

Cheapest in

February

Average price

$787
Provider with most accurate pricing for Cologne Köln/Bonn-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Cologne Köln/Bonn-Los Angeles flights.
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From Cologne Köln/Bonn to Ontario
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Highest demand for flights based on searches. 10% potential increase in price ($83 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Cologne 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 diciembre 8, 2025.
Use the filters below to find and compare flights from Cologne to Ontario that are best for you.

Fly from

Cologne

Fly to

Ontario

Route

Depart

Return

Price

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

jue. 1/22

5:05 pm-5:22 pm

2 stops33h 17m

Ontario

jue. 2/5

3:09 pm-3:40 pm

2 stops15h 31m

$663

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

dom. 3/15

4:35 pm-6:42 pm

2 stops34h 07m

Ontario

sáb. 3/21

2:47 pm-3:40 pm

2 stops16h 53m

$1,135

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

jue. 2/26

5:05 pm-1:56 pm

2 stops53h 51m

Ontario

lun. 3/2

3:19 pm-4:10 pm

2 stops15h 51m

$1,135

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

sáb. 12/27

12:40 pm-9:38 am

2 stops29h 58m

Ontario

mar. 1/6

3:09 pm-4:30 pm

2 stops16h 21m

$2,739

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

Best time to book a flight from Cologne to Ontario

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

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

Currently, February is the cheapest month in which you can book a flight from Cologne to Ontario (average of $457). Flying from Cologne to Ontario in July is currently the most expensive (average of $667). 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 Cologne to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Cologne to Ontario?

    For as low as $663, British Airways can have you in Ontario from Cologne in 33h 17m. Airlines will cover a distance of 5672 mi.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Cologne to Ontario (average of $457). Flying from Cologne to Ontario in July is currently the most expensive (average of $667). 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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