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Cluj Napoca

$528+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — CLJ
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$528
(United Airlines)

Popular in

July

Cheapest in

January

Average price

$672
From Ontario to Cluj Napoca
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Highest demand for flights based on searches. 15% potential increase in price ($142 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 17, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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 10/198:16 pmONT - CLJ
2 stops35h 04mUnited Airlines
Mon 11/32:25 pmCLJ - ONT
2 stops38h 11mUnited Airlines
Deal found 9/15$528
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/2311:59 pmONT - CLJ
2 stops51h 41mUnited Airlines
Tue 1/132:25 pmCLJ - ONT
2 stops40h 33mUnited Airlines
Deal found 9/15$625
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/165:05 amONT - CLJ
2 stops22h 35mUnited Airlines
Thu 1/156:00 amCLJ - ONT
2 stops26h 53mUnited Airlines
Deal found 9/15$853
This United deal was found by Cheapflights users on 9/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/165:05 amONT - CLJ
2 stops22h 35mMultiple Airlines
Mon 1/122:25 pmCLJ - ONT
2 stops40h 33mMultiple Airlines
Deal found 9/15$855
This United Airlines deal was found by Cheapflights users on 9/16. 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 12/165:05 amONT - CLJ
2 stops22h 35mUnited Airlines
Sat 1/102:25 pmCLJ - ONT
2 stops18h 28mUnited Airlines
Deal found 9/16$881
This United deal was found by Cheapflights users on 9/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:39 pmONT - CLJ
2 stops33h 01mMultiple Airlines
Tue 1/132:25 pmCLJ - ONT
2 stops18h 28mMultiple Airlines
Deal found 9/15$897
This United Airlines deal was found by Cheapflights users on 9/16. 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 9/221:15 pmONT - CLJ
2 stops37h 50mUnited Airlines
Fri 10/36:00 amCLJ - ONT
2 stops24h 24mUnited Airlines
Deal found 9/16$929
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 12/175:05 amONT - CLJ
2 stops22h 35mUnited Airlines
Wed 1/146:00 amCLJ - ONT
2 stops26h 26mUnited Airlines
Deal found 9/15$1,071
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 12/176:00 amONT - CLJ
2 stops21h 40mUnited Airlines
Tue 1/132:25 pmCLJ - ONT
2 stops18h 28mUnited Airlines
Deal found 9/16$1,073
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 12/175:05 amONT - CLJ
2 stops22h 35mUnited Airlines
Mon 1/126:00 amCLJ - ONT
2 stops26h 26mUnited Airlines
Deal found 9/15$1,096
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Wed 12/175:05 amONT - CLJ
2 stops22h 35mUnited Airlines
Sat 1/102:25 pmCLJ - ONT
2 stops18h 28mUnited Airlines
Deal found 9/15$1,098
This United Airlines deal was found by Cheapflights users on 9/15. 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 12/225:05 amONT - CLJ
2 stops22h 35mUnited Airlines
Thu 1/156:00 amCLJ - ONT
2 stops26h 26mUnited Airlines
Deal found 9/15$1,171

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 September 17, 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

Sun 10/19

8:16 pm-5:20 pm

2 stops35h 04m

Cluj Napoca

Mon 11/3

2:25 pm-6:36 pm

2 stops38h 11m

$528

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Tue 12/16

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Thu 1/15

6:00 am-10:53 pm

2 stops26h 53m

$853

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Tue 12/16

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Mon 1/12

2:25 pm-8:58 pm

2 stops40h 33m

$855

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Tue 12/16

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Tue 1/13

2:25 pm-10:53 pm

2 stops18h 28m

$855

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Tue 12/16

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Sat 1/10

2:25 pm-10:53 pm

2 stops18h 28m

$881

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 12/17

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Wed 1/14

6:00 am-10:26 pm

2 stops26h 26m

$1,071

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 12/17

6:00 am-1:40 pm

2 stops21h 40m

Cluj Napoca

Tue 1/13

2:25 pm-10:53 pm

2 stops18h 28m

$1,073

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 12/17

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Mon 1/12

6:00 am-10:26 pm

2 stops26h 26m

$1,096

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 12/17

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Sat 1/10

2:25 pm-10:53 pm

2 stops18h 28m

$1,098

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Mon 12/22

5:05 am-1:40 pm

2 stops22h 35m

Cluj Napoca

Thu 1/15

6:00 am-10:26 pm

2 stops26h 26m

$1,171

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

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 $671). Flying from Ontario to Cluj Napoca in June is currently the most expensive (average of $1,301). 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 can get you from Ontario to Cluj Napoca in just under 35h 04m. Your travel time can differ by up to . There are 6351 mi between Ontario and Cluj Napoca.

  • 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 $671). Flying from Ontario to Cluj Napoca in June is currently the most expensive (average of $1,301). 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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