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$326+ 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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This United Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 5/56:59 pm
ONT
-
CLJ
3 stops32h 11m
United Airlines
Wed 5/131:50 pm
CLJ
-
ONT
2 stops18h 40m
United Airlines
Deal found 1/27$499
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 5/56:59 pm
ONT
-
CLJ
3 stops32h 11m
United Airlines
Thu 6/46:00 am
CLJ
-
ONT
2 stops26h 26m
United Airlines
Deal found 1/27$529
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 5/56:59 pm
ONT
-
CLJ
3 stops32h 11m
United Airlines
Tue 5/126:00 am
CLJ
-
ONT
2 stops24h 36m
United Airlines
Deal found 1/27$534
This Iberia deal was found by Cheapflights users on 1/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2810:59 am
ONT
-
OTP
2 stops18h 26m
Multiple Airlines
Tue 5/128:15 am
OTP
-
ONT
2 stops22h 39m
Multiple Airlines
Deal found 1/27$541
This United Airlines deal was found by Cheapflights users on 1/28. 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 3/11:50 pm
ONT
-
OTP
2 stops42h 45m
United Airlines
Sun 3/155:55 am
OTP
-
ONT
2 stops25h 23m
United Airlines
Deal found 1/28$553
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Thu 3/195:15 am
ONT
-
OTP
2 stops23h 55m
United Airlines
Thu 4/26:05 am
OTP
-
ONT
2 stops26h 40m
United Airlines
Deal found 1/27$566
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 5/86:59 pm
ONT
-
CLJ
3 stops32h 11m
United Airlines
Wed 6/106:00 am
CLJ
-
ONT
2 stops26h 26m
United Airlines
Deal found 1/27$579
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 5/86:59 pm
ONT
-
CLJ
3 stops32h 11m
United Airlines
Tue 5/126:00 am
CLJ
-
ONT
2 stops26h 30m
United Airlines
Deal found 1/27$584
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Tue 5/56:59 pm
ONT
-
CLJ
3 stops32h 11m
United Airlines
Sat 5/166:00 am
CLJ
-
ONT
2 stops22h 01m
United Airlines
Deal found 1/27$589
This United Airlines deal was found by Cheapflights users on 1/27. 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.
Wed 5/67:00 am
ONT
-
CLJ
2 stops24h 25m
United Airlines
Tue 5/126:00 am
CLJ
-
ONT
2 stops26h 59m
United Airlines
Deal found 1/27$601
This Iberia deal was found by Cheapflights users on 1/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/110:56 am
ONT
-
OTP
2 stops17h 59m
Multiple Airlines
Tue 3/178:00 am
OTP
-
ONT
2 stops23h 49m
Multiple Airlines
Deal found 1/27$604
This oojo deal was found by Cheapflights users on 1/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:52 pm
ONT
-
OTP
2 stops22h 28m
British Airways
Sun 4/268:10 am
OTP
-
ONT
2 stops24h 25m
British Airways
Deal found 1/27$611

Find flight deals from Ontario to Romania

Keep the following information in mind while searching for Ontario to Romania flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$499
(United Airlines)

One-way from

$326
(Iberia)

Popular in

June

Cheapest in

October

Average price

$596
Provider with most accurate pricing for Los Angeles-Bucharest (BUH) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Bucharest (BUH) flights.
Search Deals
From Ontario to Romania
Search Deals
One-way flight from Ontario to Romania
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 29, 2026.
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

Tue 5/5

6:59 pm-1:10 pm

3 stops32h 11m

Cluj Napoca

Wed 5/13

1:50 pm-10:30 pm

2 stops18h 40m

$499

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 3/1

1:50 pm-6:35 pm

2 stops42h 45m

Bucharest Otopeni Intl

Sun 3/15

5:55 am-10:18 pm

2 stops25h 23m

$553

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 3/19

5:15 am-2:10 pm

2 stops23h 55m

Bucharest Otopeni Intl

Thu 4/2

6:05 am-10:45 pm

2 stops26h 40m

$566

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Fri 3/20

6:00 am-11:50 pm

2 stops32h 50m

Bucharest Otopeni Intl

Fri 4/3

1:45 pm-12:14 pm

2 stops32h 29m

$566

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Tue 5/5

6:59 pm-1:10 pm

3 stops32h 11m

Cluj Napoca

Sat 5/16

6:00 am-6:01 pm

2 stops22h 01m

$589

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 3/1

10:56 am-2:55 pm

2 stops17h 59m

Bucharest Otopeni Intl

Tue 3/17

8:00 am-10:49 pm

2 stops23h 49m

$604

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 4/14

4:52 pm-1:20 am

2 stops22h 28m

Bucharest Otopeni Intl

Sun 4/26

8:10 am-10:35 pm

2 stops24h 25m

$611

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Mon 5/11

6:59 pm-1:10 pm

3 stops32h 11m

Cluj Napoca

Wed 6/3

1:50 pm-10:26 pm

2 stops18h 36m

$614

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 2/19

1:45 pm-11:50 pm

2 stops24h 05m

Bucharest Otopeni Intl

Thu 3/5

2:45 pm-10:57 pm

2 stops18h 12m

$636

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 7/28

1:10 pm-1:20 am

2 stops26h 10m

Bucharest Otopeni Intl

Tue 8/11

8:15 am-10:14 pm

2 stops23h 59m

$645

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 43 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 $690). 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 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 22h 28m. Ontario and Romania are separated by a distance of 6541 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $690). 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

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