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$461+ Cheap flights from Ontario (ONT) to Romania

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
nov. 15 — nov. 221
sáb. 11/15
sáb. 11/22
1 adult, Economy
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Cheap flight deals from Ontario to Romania

Keep the following information in mind while searching for Ontario to Romania flight deals. Data was last updated octubre 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$484
(United Airlines)

One-way from

$461
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$580
Provider with most accurate pricing for Los Angeles-Bucharest (BUH) flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Bucharest (BUH) flights.
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From Ontario to Romania
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One-way flight from Ontario to Romania
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Highest demand for flights based on searches. 7% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Ontario to Romania

Cheapest flights from Ontario to Romania
Explore the most affordable flight options available from Ontario to Romania. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 16, 2025.

This United Airlines deal was found by Cheapflights users on 10/16. 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.
lun. 12/18:38 pmONT - CLJ
2 stops31h 02mUnited Airlines
lun. 12/82:25 pmCLJ - ONT
2 stops37h 12mUnited Airlines
Deal found 10/16$503
This United Airlines deal was found by Cheapflights users on 10/15. 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.
mié. 11/121:33 pmONT - OTP
2 stops19h 07mUnited Airlines
mar. 11/252:50 pmOTP - ONT
2 stops18h 01mUnited Airlines
Deal found 10/15$511
This United Airlines deal was found by Cheapflights users on 10/16. 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.
jue. 11/131:29 pmONT - OTP
2 stops19h 11mUnited Airlines
mar. 11/252:50 pmOTP - ONT
2 stops18h 01mUnited Airlines
Deal found 10/16$536
This United Airlines deal was found by Cheapflights users on 10/16. 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.
jue. 11/131:29 pmONT - OTP
2 stops19h 11mUnited Airlines
jue. 11/202:45 pmOTP - ONT
2 stops18h 06mUnited Airlines
Deal found 10/16$561
This United Airlines deal was found by Cheapflights users on 10/16. 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.
jue. 11/65:05 amONT - OTP
2 stops23h 00mUnited Airlines
jue. 11/205:50 amOTP - ONT
2 stops21h 44mUnited Airlines
Deal found 10/16$630
This KLM deal was found by Cheapflights users on 10/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1112:16 pmONT - OTP
2 stops17h 34mMultiple Airlines
lun. 11/246:00 amOTP - ONT
2 stops20h 09mMultiple Airlines
Deal found 10/16$652
This British Airways deal was found by Cheapflights users on 10/15. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/94:47 pmONT - OTP
2 stops20h 08mBritish Airways
sáb. 12/204:00 pmOTP - ONT
2 stops41h 46mBritish Airways
Deal found 10/15$804
This United Airlines deal was found by Cheapflights users on 10/15. 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.
mar. 12/91:50 pmONT - OTP
2 stops24h 05mUnited Airlines
sáb. 12/202:50 pmOTP - ONT
2 stops41h 02mUnited Airlines
Deal found 10/15$805
This United Airlines deal was found by Cheapflights users on 10/16. 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.
mar. 11/41:33 pmONT - OTP
2 stops18h 52mUnited Airlines
jue. 11/135:50 amOTP - ONT
2 stops21h 44mUnited Airlines
Deal found 10/16$811
This Delta deal was found by Cheapflights users on 10/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/224:49 pmONT - OTP
2 stops44h 01mDelta
dom. 12/71:55 pmOTP - ONT
2 stops39h 44mDelta
Deal found 10/15$820
This United Airlines deal was found by Cheapflights users on 10/15. 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.
jue. 10/236:27 pmONT - CLJ
2 stops36h 53mUnited Airlines
mié. 11/52:25 pmCLJ - ONT
2 stops18h 26mUnited Airlines
Deal found 10/15$830
This United Airlines deal was found by Cheapflights users on 10/16. 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.
lun. 12/81:34 pmONT - OTP
2 stops19h 01mUnited Airlines
lun. 12/225:55 amOTP - ONT
2 stops25h 12mUnited Airlines
Deal found 10/16$861

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Romania 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 octubre 16, 2025.
Use the filters below to find and compare flights from Ontario to Romania that are best for you.

Fly from

Ontario

Fly to

Romania

Route

Depart

Return

Price

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

lun. 12/1

8:38 pm-1:40 pm

2 stops31h 02m

Cluj Napoca

lun. 12/8

2:25 pm-5:37 pm

2 stops37h 12m

$503

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

mié. 11/12

1:33 pm-6:40 pm

2 stops19h 07m

Bucharest Otopeni Intl

mié. 11/26

2:40 pm-10:51 pm

2 stops18h 11m

$511

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

jue. 11/13

1:29 pm-6:40 pm

2 stops19h 11m

Bucharest Otopeni Intl

mar. 11/25

2:50 pm-10:51 pm

2 stops18h 01m

$536

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

jue. 11/13

1:29 pm-6:40 pm

2 stops19h 11m

Bucharest Otopeni Intl

vie. 11/21

2:50 pm-10:51 pm

2 stops18h 01m

$536

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

sáb. 1/17

6:00 am-2:05 pm

2 stops22h 05m

Bucharest Otopeni Intl

sáb. 1/31

2:50 pm-10:53 pm

2 stops18h 03m

$560

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

sáb. 1/10

1:20 pm-11:50 pm

2 stops24h 30m

Bucharest Otopeni Intl

sáb. 1/31

5:55 am-8:58 pm

2 stops25h 03m

$560

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

lun. 2/16

6:00 am-2:05 pm

2 stops22h 05m

Bucharest Otopeni Intl

lun. 3/2

2:50 pm-10:57 pm

2 stops18h 07m

$561

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

jue. 11/13

1:29 pm-6:40 pm

2 stops19h 11m

Bucharest Otopeni Intl

jue. 11/20

2:45 pm-10:51 pm

2 stops18h 06m

$561

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

jue. 11/6

5:05 am-2:05 pm

2 stops23h 00m

Bucharest Otopeni Intl

jue. 11/20

5:50 am-5:34 pm

2 stops21h 44m

$630

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

mar. 11/11

12:16 pm-3:50 pm

2 stops17h 34m

Bucharest Otopeni Intl

lun. 11/24

6:00 am-4:09 pm

2 stops20h 09m

$652

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 17 results
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Best time to book a flight from Ontario to Romania

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

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

Currently, September is the cheapest month in which you can book a flight from Ontario to Romania (average of $441). Flying from Ontario to Romania in June is currently the most expensive (average of $685). 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.

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

Find hourly flight availability from Ontario to Romania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 16, 2025.

One of the essential ways to save on airfare from Ontario to Romania is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 39% on airfare.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Romania. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Romania?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Romania from Ontario.

  • How long is the flight from Ontario to Romania?

    Departing from Ontario to Romania will take you 19h 07m. Ontario and Romania are separated by a distance of 6541 mi.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Ontario to Romania (average of $441). Flying from Ontario to Romania in June is currently the most expensive (average of $685). 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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Alternative routes for Ontario to Romania

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