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$490+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
abr. 2 — abr. 91
mié. 4/2
mié. 4/9
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 marzo 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$640
(United Airlines)

One-way from

$490
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$624
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. 13% potential increase in price ($114 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in March 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 marzo 28, 2025.

This United Airlines deal was found by Cheapflights users on 3/25. 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.
mar. 7/291:34 pmONT - OTP
2 stops17h 16mUnited Airlines
mar. 10/76:00 amOTP - ONT
2 stops24h 17mUnited Airlines
Deal found 3/25$640
This Gurufare deal was found by Cheapflights users on 3/26. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/1011:59 pmONT - OTP
2 stops38h 46mBritish Airways
sáb. 5/178:05 pmOTP - ONT
2 stops35h 52mBritish Airways
Deal found 3/26$712
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/211:46 amONT - OTP
2 stops19h 34mDelta
vie. 8/297:00 amOTP - ONT
2 stops25h 29mDelta
Deal found 3/27$841
This United deal was found by Cheapflights users on 3/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/186:00 amONT - CLJ
2 stops32h 30mMultiple Airlines
vie. 5/26:00 amCLJ - ONT
2 stops24h 34mMultiple Airlines
Deal found 3/27$841
This United Airlines deal was found by Cheapflights users on 3/27. 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.
mié. 5/287:00 amONT - CLJ
3 stops24h 20mUnited Airlines
jue. 6/196:00 amCLJ - ONT
2 stops21h 25mUnited Airlines
Deal found 3/27$910
This United deal was found by Cheapflights users on 3/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/191:20 pmONT - OTP
2 stops49h 40mMultiple Airlines
lun. 5/56:00 amOTP - ONT
2 stops22h 01mMultiple Airlines
Deal found 3/26$988
This Air Serbia deal was found by Cheapflights users on 3/26. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/2211:00 pmONT - OTP
2 stops30h 20mAir Serbia
lun. 10/64:05 pmOTP - ONT
2 stops39h 36mAir Serbia
Deal found 3/26$1,075

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 marzo 28, 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

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

mar. 7/29

1:34 pm-4:50 pm

2 stops17h 16m

Bucharest Otopeni Intl

mar. 10/7

6:00 am-8:17 pm

2 stops24h 17m

$640

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

sáb. 5/10

11:59 pm-12:45 am

2 stops38h 46m

Bucharest Otopeni Intl

sáb. 5/17

8:05 pm-9:57 pm

2 stops35h 52m

$712

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

lun. 6/2

11:46 am-5:20 pm

2 stops19h 34m

Bucharest Otopeni Intl

vie. 8/29

7:00 am-10:29 pm

2 stops25h 29m

$841

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

vie. 4/18

6:00 am-12:30 am

2 stops32h 30m

Cluj Napoca

vie. 5/2

6:00 am-8:34 pm

2 stops24h 34m

$841

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

mié. 5/28

7:00 am-5:20 pm

3 stops24h 20m

Cluj Napoca

jue. 6/19

6:00 am-5:25 pm

2 stops21h 25m

$910

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

sáb. 4/19

1:20 pm-1:00 am

2 stops49h 40m

Bucharest Otopeni Intl

lun. 5/5

6:00 am-6:01 pm

2 stops22h 01m

$988

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

lun. 9/22

11:00 pm-3:20 pm

2 stops30h 20m

Bucharest Otopeni Intl

lun. 10/6

4:05 pm-9:41 pm

2 stops39h 36m

$1,075

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

dom. 5/4

1:20 pm-6:35 pm

2 stops19h 15m

$490

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

mar. 8/5

7:00 am-5:15 pm

2 stops24h 15m

$490

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

dom. 6/8

11:49 am-5:20 pm

2 stops19h 31m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 13 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, November is the cheapest month in which you can book a flight from Ontario to Romania (average of $604). Flying from Ontario to Romania in June is currently the most expensive (average of $1,175). 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 marzo 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Romania as you normally would.

Rainfall in Romania by month

Plan your trip to Romania by taking into account the average rainfall totals by month.

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

Temperature in Romania by month

Plan your trip to Romania by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Romania, 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 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Romania

Get insights into the airlines that provide service to Romania. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Romania. Reviews last updated marzo 28, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Ontario to Romania by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.6
Okay
6,712 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Serbia
6.3
Okay
194 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Ontario to Romania one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $490. Delta flights start at $628 while deals on British Airways start at $746 one-way.

  • 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, November is the cheapest month in which you can book a flight from Ontario to Romania (average of $604). Flying from Ontario to Romania in June is currently the most expensive (average of $1,175). 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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