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Cluj Napoca

$547+ Cheap flights from Ontario (ONT) to Cluj Napoca (CLJ)

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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CLJ
Jan 29 — Feb 51
Thu 1/29
Thu 2/5
1 adult, Economy
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Cheap flight deals from Ontario to Cluj Napoca

Cheapest flights from Ontario to Cluj Napoca
Explore the most affordable flight options available from Ontario to Cluj Napoca. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 30, 2025.

This United Airlines deal was found by Cheapflights users on 12/27. 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.
Sun 12/286:00 amONT - CLJ
2 stops21h 40mUnited Airlines
Sun 1/46:00 amCLJ - ONT
2 stops25h 52mUnited Airlines
Deal found 12/27$2,845

Find flight deals from Ontario to Cluj Napoca

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Cluj Napoca (CLJ). 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 December 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$547
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$601
Provider with most accurate pricing for Ontario-Cluj Napoca flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Cluj Napoca flights.
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From Ontario to Cluj Napoca
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 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 Ontario to Cluj Napoca 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 December 30, 2025.
Use the filters below to find and compare flights from Ontario to Cluj Napoca that are best for you.

Fly from

Ontario

Fly to

Cluj Napoca

Route

Depart

Return

Price

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Thu 1/29

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Mon 2/2

6:00 am-5:43 pm

2 stops21h 43m

$547

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Thu 3/5

6:37 pm-12:55 am

2 stops20h 18m

Cluj Napoca

Wed 4/1

1:50 pm-10:26 pm

2 stops18h 36m

$633

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 5/20

11:05 am-5:25 pm

2 stops20h 20m

Cluj Napoca

Fri 6/12

6:00 am-5:18 pm

2 stops21h 18m

$1,137

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 5/20

7:00 am-1:10 pm

2 stops44h 10m

Cluj Napoca

Wed 6/24

6:00 am-12:20 pm

2 stops40h 20m

$1,898

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 6/10

7:00 am-1:10 pm

2 stops44h 10m

Cluj Napoca

Wed 6/24

6:00 am-12:20 pm

2 stops40h 20m

$2,071

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Compare providers for flights from Ontario to Cluj Napoca

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Cluj Napoca in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Cluj Napoca flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Cluj Napoca flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Cluj Napoca flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Cluj Napoca flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Cluj Napoca flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Cluj Napoca

Have a flexible travel schedule? Discover the best time to fly to Cluj Napoca 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 Cluj Napoca

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

Currently, January is the cheapest month in which you can book a flight from Ontario to Cluj Napoca (average of $467). Flying from Ontario to Cluj Napoca in June is currently the most expensive (average of $733). 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 Ontario to Cluj Napoca. 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 Ontario to Cluj Napoca?

    United Airlines and Lufthansa can get you from Ontario to Cluj Napoca in just under 20h 18m. Your travel time can differ by up to 2h 17m. There are 6351 mi between Ontario and Cluj Napoca. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Ontario to Cluj Napoca?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Cluj Napoca 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 Cluj Napoca?

    Currently, January is the cheapest month in which you can book a flight from Ontario to Cluj Napoca (average of $467). Flying from Ontario to Cluj Napoca in June is currently the most expensive (average of $733). 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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