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$413+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Mar 31 — Apr 71
Tue 3/31
Tue 4/7
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 March 1, 2026.

This United Airlines deal was found by Cheapflights users on 2/26. 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 4/2111:05 am
ONT
-
OTP
2 stops19h 15m
United Airlines
Tue 5/56:05 am
OTP
-
ONT
2 stops24h 31m
United Airlines
Deal found 2/26$515
This United Airlines deal was found by Cheapflights users on 2/25. 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 4/55:10 am
ONT
-
OTP
2 stops32h 30m
United Airlines
Wed 8/261:45 pm
OTP
-
ONT
2 stops38h 02m
United Airlines
Deal found 2/25$516
This Iberia deal was found by Cheapflights users on 2/25. 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 11/1710:47 am
ONT
-
OTP
2 stops17h 58m
Multiple Airlines
Sun 11/227:35 am
OTP
-
ONT
2 stops24h 48m
Multiple Airlines
Deal found 2/25$555
This United Airlines deal was found by Cheapflights users on 2/26. 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 3/306:00 am
ONT
-
OTP
2 stops31h 50m
United Airlines
Mon 4/136:05 am
OTP
-
ONT
2 stops26h 40m
United Airlines
Deal found 2/26$565
This United Airlines deal was found by Cheapflights users on 2/28. 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.
Mon 5/186:59 pm
ONT
-
CLJ
3 stops32h 11m
United Airlines
Wed 5/276:00 am
CLJ
-
ONT
2 stops21h 28m
United Airlines
Deal found 2/28$579
This Trip.com deal was found by Cheapflights users on 2/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/66:00 am
ONT
-
OTP
2 stops23h 25m
KLM
Mon 4/207:05 am
OTP
-
ONT
2 stops19h 20m
KLM
Deal found 2/28$595
This United Airlines deal was found by Cheapflights users on 2/25. 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 5/110:37 am
ONT
-
OTP
2 stops27h 03m
United Airlines
Sun 5/106:05 am
OTP
-
ONT
2 stops26h 54m
United Airlines
Deal found 2/25$616
This United Airlines deal was found by Cheapflights users on 2/25. 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 3/151:40 pm
ONT
-
OTP
2 stops39h 25m
United Airlines
Wed 3/256:05 am
OTP
-
ONT
2 stops25h 13m
United Airlines
Deal found 2/25$621
This Iberia deal was found by Cheapflights users on 2/27. 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 3/1010:56 am
ONT
-
OTP
2 stops18h 49m
Multiple Airlines
Tue 3/178:00 am
OTP
-
ONT
2 stops23h 49m
Multiple Airlines
Deal found 2/27$625
This oojo deal was found by Cheapflights users on 2/26. 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 4/74:52 pm
ONT
-
OTP
2 stops22h 28m
British Airways
Wed 4/298:15 am
OTP
-
ONT
2 stops25h 31m
British Airways
Deal found 2/26$631
This United Airlines deal was found by Cheapflights users on 2/25. 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.
Sat 4/116:49 pm
ONT
-
OTP
2 stops42h 51m
United Airlines
Sat 4/181:55 pm
OTP
-
ONT
2 stops42h 50m
United Airlines
Deal found 2/25$634
This United Airlines deal was found by Cheapflights users on 2/27. 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 3/116:15 am
ONT
-
OTP
2 stops22h 45m
United Airlines
Tue 4/286:05 am
OTP
-
ONT
2 stops26h 26m
United Airlines
Deal found 2/27$635

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 March 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$515
(United Airlines)

One-way from

$413
(United Airlines)

Popular in

June

Cheapest in

January

Average price

$599
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. 12% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 1, 2026.
Use the filters below to find and compare flights from Ontario to Romania that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 4/5

5:10 am-11:40 pm

2 stops32h 30m

Bucharest Otopeni Intl

Wed 8/26

1:45 pm-5:47 pm

2 stops38h 02m

$516

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 5/13

1:30 pm-11:50 pm

2 stops24h 20m

Bucharest Otopeni Intl

Sat 8/22

6:05 am-10:58 pm

2 stops26h 53m

$565

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 3/30

6:00 am-11:50 pm

2 stops31h 50m

Bucharest Otopeni Intl

Mon 4/13

6:05 am-10:45 pm

2 stops26h 40m

$565

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Mon 5/18

6:59 pm-1:10 pm

3 stops32h 11m

Cluj Napoca

Thu 5/28

6:00 am-8:42 pm

2 stops24h 42m

$579

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Mon 5/18

6:59 pm-1:10 pm

3 stops32h 11m

Cluj Napoca

Wed 5/27

6:00 am-5:28 pm

2 stops21h 28m

$579

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 4/6

6:00 am-3:25 pm

2 stops23h 25m

Bucharest Otopeni Intl

Mon 4/20

7:05 am-4:25 pm

2 stops19h 20m

$595

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Fri 5/1

10:37 am-11:40 pm

2 stops27h 03m

Bucharest Otopeni Intl

Sun 5/10

6:05 am-10:59 pm

2 stops26h 54m

$616

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 4/11

6:49 pm-11:40 pm

2 stops42h 51m

Bucharest Otopeni Intl

Sat 4/18

1:55 pm-10:45 pm

2 stops42h 50m

$634

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 4/18

10:49 am-4:30 pm

2 stops19h 41m

Bucharest Otopeni Intl

Mon 5/4

6:05 am-5:52 pm

2 stops21h 47m

$635

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Mon 5/18

6:59 pm-1:10 pm

3 stops32h 11m

Cluj Napoca

Sat 5/30

1:50 pm-10:50 pm

2 stops19h 00m

$687

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/26

Showing 1-10 of 34 resultsSorted by cheapest first
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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 $684). 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 19h 15m. 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 $684). 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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