In terms of precipitation, rainfall in Cluj Napoca ranges from 0.8 - 3.1 inches per month. June is typically the wettest month, when rainfall can reach 3.1 in. January is typically the driest time to visit Cluj Napoca when rainfall is around 0.8 in.

If weather is an important factor for your trip to Cluj Napoca, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

How far in advance should I book a flight from Ontario to Cluj Napoca?

Find a great deal and save up to 61% by booking at least 47 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Ontario to Cluj Napoca within the next two weeks, with the cheapest ticket starting at $704.

What is the cheapest month to fly from Ontario to Cluj Napoca?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, October can be a great choice for travel to Cluj Napoca. Flights to Cluj Napoca from Ontario in October are about $787 on average during October, but can be found for as low as $430.

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

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

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.

$520+ Flights from Ontario to Cluj Napoca

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Cheap flight deals from Ontario to Cluj Napoca

Round-trip from	$520 (United Airlines)
Popular in	July
Cheapest in	October
Average price	$1,141

From Ontario to Cluj Napoca

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Highest demand for flights based on searches. 17% potential increase in price ($169 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find 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 July 4, 2025.

Sun 8/107:00 amONT - CLJ

2 stops20h 05mUnited Airlines

Tue 8/266:00 amCLJ - ONT

2 stops21h 37mUnited Airlines

Deal found 7/2

$520

Best flights from Ontario to Cluj Napoca
Discover carefully curated flight deals from Ontario to Cluj Napoca that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 4, 2025.

Sun 8/107:00 amONT - CLJ

2 stops20h 05mUnited Airlines

Tue 8/266:00 amCLJ - ONT

2 stops21h 37mUnited Airlines

Deal found 7/2

$520

Last-minute flights from Ontario to Cluj Napoca
Discover last-minute flight deals from Ontario to Cluj Napoca. Data last updated July 4, 2025 and is based on user searches.

Sun 8/107:00 amONT - CLJ

2 stops20h 05mUnited Airlines

Tue 8/266:00 amCLJ - ONT

2 stops21h 37mUnited Airlines

Deal found 7/2

$520

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Cluj Napoca that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Sun 8/10

7:00 am-1:05 pm

2 stops20h 05m

Cluj Napoca

Tue 8/26

6:00 am-5:37 pm

2 stops21h 37m

$520

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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 $677). Flying from Ontario to Cluj Napoca in June is currently the most expensive (average of $1,304). 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.

Reviews of airlines servicing Cluj Napoca

See what other customers who have flown with United Airlines from Ontario to Cluj Napoca have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,845 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,845 reviews

United Airlines

7.4

Good

8,845 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

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 $677). Flying from Ontario to Cluj Napoca in June is currently the most expensive (average of $1,304). 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

Browse thousands of different options on Cheapflights for your next trip

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$520+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Cluj Napoca with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Cluj Napoca

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Cluj Napoca

Cheapest flights from Ontario to Cluj NapocaExplore 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 July 4, 2025.

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 July 4, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Cluj Napoca that are best for you.

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.

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?

Reviews of airlines servicing Cluj Napoca

See what other customers who have flown with United Airlines from Ontario to Cluj Napoca have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Cluj Napoca

See prices for flight routes from nearby airports that may be better suited for you.

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Travel Smart

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 July 4, 2025.