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$437+ 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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$589
(Delta)

One-way from

$437
(United)

Popular in

June

Cheapest in

October

Average price

$667
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. 11% potential increase in price ($90 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 May 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 May 1, 2025.

This Ovago deal was found by Cheapflights users on 4/29. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:55 amONT - OTP
2 stops19h 55mBritish Airways
Wed 11/128:05 amOTP - ONT
2 stops23h 55mBritish Airways
Deal found 4/29$585
This Delta deal was found by Cheapflights users on 4/30. 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.
Mon 10/1311:29 amONT - OTP
2 stops19h 51mDelta
Fri 10/246:30 amOTP - ONT
2 stops26h 11mDelta
Deal found 4/30$589
This United Airlines deal was found by Cheapflights users on 4/29. 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 9/81:15 pmONT - OTP
2 stops17h 35mUnited Airlines
Sun 9/286:00 amOTP - ONT
2 stops21h 32mUnited Airlines
Deal found 4/29$671
This United deal was found by Cheapflights users on 4/30. 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 5/206:00 amONT - OTP
2 stops31h 30mMultiple Airlines
Thu 5/291:55 pmOTP - ONT
2 stops18h 50mMultiple Airlines
Deal found 4/30$746
This United Airlines deal was found by Cheapflights users on 4/29. 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 6/26:00 amONT - CLJ
2 stops25h 20mUnited Airlines
Mon 6/161:45 pmCLJ - ONT
2 stops41h 19mUnited Airlines
Deal found 4/29$823
This Air Serbia deal was found by Cheapflights users on 4/28. 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 Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/510:40 pmONT - OTP
2 stops31h 45mAir Serbia
Mon 5/124:40 amOTP - ONT
2 stops26h 31mAir Serbia
Deal found 4/28$1,114
This United deal was found by Cheapflights users on 4/30. 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.
Sat 5/103:10 pmONT - CLJ
2 stops35h 55mMultiple Airlines
Wed 5/146:00 amCLJ - ONT
3 stops40h 24mMultiple Airlines
Deal found 4/30$2,338

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 May 1, 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

Mon 10/13

11:29 am-5:20 pm

2 stops19h 51m

Bucharest Otopeni Intl

Fri 10/24

6:30 am-10:41 pm

2 stops26h 11m

$589

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 10/27

10:55 am-3:35 pm

2 stops19h 40m

Bucharest Otopeni Intl

Mon 11/10

8:05 am-9:41 pm

2 stops23h 36m

$652

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 9/8

1:15 pm-4:50 pm

2 stops17h 35m

Bucharest Otopeni Intl

Sun 9/28

6:00 am-5:32 pm

2 stops21h 32m

$671

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 5/20

6:00 am-11:30 pm

2 stops31h 30m

Bucharest Otopeni Intl

Thu 5/29

1:55 pm-10:45 pm

2 stops18h 50m

$746

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Mon 6/2

6:00 am-5:20 pm

2 stops25h 20m

Cluj Napoca

Mon 6/16

1:45 pm-9:04 pm

2 stops41h 19m

$823

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 5/18

10:59 pm-4:25 pm

2 stops31h 26m

Bucharest Otopeni Intl

Tue 5/27

4:05 pm-9:11 pm

2 stops39h 06m

$1,114

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 8/10

6:10 am-11:50 pm

2 stops31h 40m

$437

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 5/11

10:00 pm-12:10 pm

2 stops28h 10m

$501

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 5/10

11:59 pm-12:45 am

2 stops38h 46m

$541

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 5/11

10:59 pm-3:20 pm

2 stops30h 21m

$2,338

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 $1,169). 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 May 1, 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 May 1, 2025.
Get a feel of what it's like to fly with Delta, United Airlines and British Airways 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
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

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
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

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
6,842 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

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
196 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

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 $466. Delta flights start at $501 while deals on British Airways start at $541 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 $1,169). 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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