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$414+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$530
(United Airlines)

One-way from

$414
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$847
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. 8% potential increase in price ($69 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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 12/1010:40 amONT - OTP
2 stops22h 00mUnited Airlines
Wed 12/245:55 amOTP - ONT
2 stops24h 22mUnited Airlines
Deal found 6/10$523
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/295:05 amONT - CLJ
2 stops26h 10mUnited Airlines
Fri 8/296:00 amCLJ - ONT
2 stops21h 29mUnited Airlines
Deal found 6/10$554
This Iberia deal was found by Cheapflights users on 6/10. 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.
Mon 11/1011:00 amONT - OTP
2 stops18h 35mMultiple Airlines
Mon 11/248:05 amOTP - ONT
2 stops23h 55mMultiple Airlines
Deal found 6/10$568
This Booking.com deal was found by Cheapflights users on 6/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:05 pmONT - OTP
2 stops18h 25mBritish Airways
Thu 12/258:05 amOTP - ONT
2 stops23h 37mBritish Airways
Deal found 6/11$570
This Delta deal was found by Cheapflights users on 6/11. 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.
Wed 7/211:25 amONT - OTP
2 stops19h 55mDelta
Wed 7/236:30 amOTP - ONT
2 stops20h 46mDelta
Deal found 6/11$909
This Air Serbia deal was found by Cheapflights users on 6/10. 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 9/810:56 pmONT - OTP
2 stops42h 09mAir Serbia
Mon 9/224:30 amOTP - ONT
2 stops26h 59mAir Serbia
Deal found 6/10$1,150

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 June 12, 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

Tue 12/9

10:40 am-6:30 pm

2 stops21h 50m

Bucharest Otopeni Intl

Tue 12/23

6:05 am-5:18 pm

2 stops21h 13m

$530

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Tue 7/29

7:00 am-1:05 pm

2 stops20h 05m

Cluj Napoca

Thu 8/28

6:00 am-8:33 pm

2 stops24h 33m

$554

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/10

11:00 am-3:35 pm

2 stops18h 35m

Bucharest Otopeni Intl

Mon 11/24

8:05 am-10:00 pm

2 stops23h 55m

$568

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 7/2

11:25 am-5:20 pm

2 stops19h 55m

Bucharest Otopeni Intl

Wed 7/23

6:30 am-5:16 pm

2 stops20h 46m

$909

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 10/11

5:02 pm-12:30 am

2 stops21h 28m

Bucharest Otopeni Intl

Sat 10/25

8:25 am-4:36 pm

2 stops18h 11m

$910

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 9/8

10:56 pm-3:05 am

2 stops42h 09m

Bucharest Otopeni Intl

Mon 9/22

4:30 am-9:29 pm

2 stops26h 59m

$1,150

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Sun 7/27

7:00 am-1:05 pm

2 stops20h 05m

$414

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 7/19

6:39 pm-4:50 pm

2 stops36h 11m

$429

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 9/15

10:56 pm-3:20 pm

2 stops30h 24m

$2,288

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Sat 9/6

10:56 pm-5:30 pm

2 stops32h 34m

$2,670

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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 $1,146). 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 June 12, 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 June 12, 2025.
Get a feel of what it's like to fly with Delta, LOT and United 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
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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.
LOT
7.6
Good
1,077 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,008 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
196 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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 $414. Air Serbia flights start at $2,288 while deals on LOT start at $2,670 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 $1,146). 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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