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$677+ 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 2/27. Fares are subject to change and may not be available on all flights or dates of travel.
CGN — ONT
mar. 5 — mar. 121
to. 3/5
to. 3/12
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 februar 3, 2026.

This British Airways deal was found by Cheapflights users on 2/1. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fr. 2/274:35 pm
CGN
-
ONT
2 stops39h 14m
British Airways
ma. 3/211:58 pm
ONT
-
CGN
2 stops31h 32m
British Airways
Deal found 2/1$677
This British Airways deal was found by Cheapflights users on 2/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 2/195:05 pm
CGN
-
ONT
2 stops34h 37m
British Airways
on. 3/42:39 pm
ONT
-
CGN
2 stops16h 31m
British Airways
Deal found 2/2$701
This United Airlines deal was found by Cheapflights users on 2/2. 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.
ma. 4/271:00 pm
CGN
-
ONT
2 stops18h 45m
United Airlines
ma. 5/1810:37 am
ONT
-
CGN
2 stops16h 43m
United Airlines
Deal found 2/2$708
This lastminute.com deal was found by Cheapflights users on 2/3. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
to. 2/195:05 pm
CGN
-
ONT
2 stops34h 37m
British Airways
ma. 2/232:39 pm
ONT
-
CGN
2 stops16h 31m
British Airways
Deal found 2/3$737
This Expedia deal was found by Cheapflights users on 2/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 3/105:05 pm
CGN
-
ONT
2 stops33h 37m
British Airways
ti. 3/173:19 pm
ONT
-
CGN
2 stops17h 11m
British Airways
Deal found 2/2$756
This Turkish Airlines deal was found by Cheapflights users on 2/1. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
fr. 5/2210:25 am
CGN
-
ONT
2 stops44h 44m
Multiple Airlines
lø. 5/3011:25 pm
ONT
-
CGN
2 stops25h 00m
Multiple Airlines
Deal found 2/1$1,336
This oojo deal was found by Cheapflights users on 2/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 8/297:10 pm
CGN
-
ONT
2 stops35h 59m
Turkish Airlines
lø. 9/1910:56 pm
ONT
-
CGN
2 stops25h 29m
Turkish Airlines
Deal found 2/1$1,399
This British Airways deal was found by Cheapflights users on 2/3. 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.
fr. 3/134:35 pm
CGN
-
ONT
2 stops34h 07m
British Airways
fr. 3/202:39 pm
ONT
-
CGN
2 stops17h 41m
British Airways
Deal found 2/3$1,509
This Turkish Airlines deal was found by Cheapflights users on 2/3. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lø. 8/2210:25 am
CGN
-
ONT
2 stops44h 44m
Multiple Airlines
lø. 9/56:00 am
ONT
-
CGN
2 stops22h 50m
Multiple Airlines
Deal found 2/3$1,512
This Turkish Airlines deal was found by Cheapflights users on 2/1. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 2/1711:35 am
CGN
-
ONT
2 stops44h 09m
Multiple Airlines
lø. 2/216:14 am
ONT
-
CGN
2 stops43h 21m
Multiple Airlines
Deal found 2/1$1,646
This Turkish Airlines deal was found by Cheapflights users on 2/2. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ti. 7/217:10 pm
CGN
-
ONT
2 stops59h 59m
Turkish Airlines
fr. 8/1411:25 pm
ONT
-
CGN
2 stops49h 00m
Turkish Airlines
Deal found 2/2$1,660
This Turkish Airlines deal was found by Cheapflights users on 2/1. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sø. 7/52:50 pm
CGN
-
ONT
2 stops64h 19m
Multiple Airlines
lø. 7/116:00 am
ONT
-
CGN
2 stops22h 50m
Multiple Airlines
Deal found 2/1$1,839

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 februar 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$677
(British Airways)

Popular in

July

Cheapest in

February

Average price

$609
Provider with most accurate pricing for Cologne Köln/Bonn-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cologne Köln/Bonn-Los Angeles flights.
Search Deals
From Cologne Köln/Bonn to Ontario
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($124 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 februar 3, 2026.
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

fr. 2/27

4:35 pm-10:49 pm

2 stops39h 14m

Ontario

ma. 3/2

11:58 pm-4:30 pm

2 stops31h 32m

$677

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

to. 2/19

5:05 pm-6:42 pm

2 stops34h 37m

Ontario

on. 3/4

2:39 pm-4:10 pm

2 stops16h 31m

$701

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

lø. 5/2

8:30 am-5:52 pm

2 stops18h 22m

Ontario

ma. 5/18

10:37 am-12:20 pm

2 stops16h 43m

$708

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

ti. 4/28

1:00 pm-10:26 pm

2 stops18h 26m

Ontario

ma. 5/18

10:37 am-12:20 pm

2 stops16h 43m

$708

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

fr. 5/1

1:00 pm-10:59 pm

2 stops18h 59m

Ontario

ma. 5/18

10:37 am-12:20 pm

2 stops16h 43m

$708

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

to. 4/30

1:00 pm-10:30 pm

2 stops18h 30m

Ontario

ma. 5/18

10:37 am-12:20 pm

2 stops16h 43m

$708

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

ma. 4/27

1:00 pm-10:45 pm

2 stops18h 45m

Ontario

ma. 5/18

10:37 am-12:20 pm

2 stops16h 43m

$708

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

to. 2/19

5:05 pm-6:42 pm

2 stops34h 37m

Ontario

ma. 2/23

2:39 pm-4:10 pm

2 stops16h 31m

$737

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

ti. 3/10

5:05 pm-6:42 pm

2 stops33h 37m

Ontario

ti. 3/17

3:19 pm-4:30 pm

2 stops17h 11m

$756

CologneOntario

CGN - ONT

CGNONT

Cologne Köln/Bonn

fr. 5/22

10:25 am-10:09 pm

2 stops44h 44m

Ontario

lø. 5/30

11:25 pm-9:25 am

2 stops25h 00m

$1,336

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

Showing 1-10 of 12 results
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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 $447). Flying from Cologne to Ontario in December is currently the most expensive (average of $579). 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 $708, British Airways can have you in Ontario from Cologne in 18h 22m. Airlines will cover a distance of 5672 mi. This flight may include one or multiple stops.

  • 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 $447). Flying from Cologne to Ontario in December is currently the most expensive (average of $579). 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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