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$384+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 September 17, 2025.

Round-trip from

$478
(Air France)

One-way from

$384
(Travelocity)

Popular in

December

Cheapest in

October

Average price

$709
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. 9% potential increase in price ($75 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 September 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 September 17, 2025.

This Air France deal was found by Cheapflights users on 9/16. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:36 amONT - OTP
2 stops19h 14mAir France
Tue 11/118:40 amOTP - ONT
2 stops24h 24mAir France
Deal found 9/16$478
This Delta deal was found by Cheapflights users on 9/16. 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.
Tue 10/2811:36 amONT - OTP
2 stops26h 14mDelta
Tue 11/116:05 amOTP - ONT
2 stops26h 50mDelta
Deal found 9/16$486
This KLM deal was found by Cheapflights users on 9/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2711:48 amONT - OTP
2 stops18h 37mMultiple Airlines
Tue 11/118:40 amOTP - ONT
2 stops24h 24mMultiple Airlines
Deal found 9/16$491
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 10/711:48 amONT - OTP
2 stops19h 32mDelta
Fri 1/166:05 amOTP - ONT
2 stops43h 15mDelta
Deal found 9/17$499
This Delta deal was found by Cheapflights users on 9/17. 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.
Tue 10/77:35 amONT - OTP
2 stops23h 45mDelta
Tue 1/136:00 amOTP - ONT
2 stops20h 19mDelta
Deal found 9/17$500
This Delta deal was found by Cheapflights users on 9/16. 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.
Sun 10/2610:00 pmONT - OTP
2 stops54h 00mDelta
Wed 11/126:00 amOTP - ONT
2 stops23h 37mDelta
Deal found 9/16$505
This Delta deal was found by Cheapflights users on 9/16. 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.
Sun 10/2610:00 pmONT - OTP
2 stops54h 00mDelta
Mon 11/101:55 pmOTP - ONT
2 stops54h 45mDelta
Deal found 9/16$511
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/281:40 pmONT - OTP
2 stops25h 15mUnited Airlines
Tue 11/112:50 pmOTP - ONT
2 stops18h 01mUnited Airlines
Deal found 9/15$526
This Air France deal was found by Cheapflights users on 9/16. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:36 amONT - OTP
2 stops19h 14mAir France
Mon 11/108:40 amOTP - ONT
2 stops24h 24mAir France
Deal found 9/16$528
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/198:16 pmONT - CLJ
2 stops35h 04mUnited Airlines
Mon 11/32:25 pmCLJ - ONT
2 stops38h 11mUnited Airlines
Deal found 9/15$528
This Delta deal was found by Cheapflights users on 9/17. 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.
Sun 10/56:00 amONT - OTP
2 stops25h 20mDelta
Fri 1/166:05 amOTP - ONT
2 stops43h 15mDelta
Deal found 9/17$529
This Delta deal was found by Cheapflights users on 9/17. 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.
Sun 10/56:00 amONT - OTP
2 stops25h 20mDelta
Thu 1/151:55 pmOTP - ONT
2 stops42h 43mDelta
Deal found 9/17$530

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 September 17, 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 10/27

9:50 am-3:25 pm

2 stops20h 35m

Bucharest Otopeni Intl

Wed 11/12

8:40 am-11:04 pm

2 stops24h 24m

$491

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 10/27

11:48 am-3:25 pm

2 stops18h 37m

Bucharest Otopeni Intl

Tue 11/11

8:40 am-11:04 pm

2 stops24h 24m

$491

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 1/13

3:00 pm-10:55 pm

2 stops21h 55m

Bucharest Otopeni Intl

Tue 1/27

8:00 am-10:02 pm

2 stops24h 02m

$493

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 10/11

5:50 pm-1:00 pm

2 stops57h 10m

Bucharest Otopeni Intl

Wed 1/14

6:05 am-9:14 pm

2 stops25h 09m

$499

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 10/7

11:48 am-5:20 pm

2 stops19h 32m

Bucharest Otopeni Intl

Fri 1/16

6:05 am-3:20 pm

2 stops43h 15m

$499

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 10/11

5:50 pm-1:00 pm

2 stops57h 10m

Bucharest Otopeni Intl

Thu 1/15

1:55 pm-12:34 pm

2 stops56h 39m

$500

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 10/7

7:35 am-5:20 pm

2 stops23h 45m

Bucharest Otopeni Intl

Mon 1/12

1:55 pm-10:38 pm

2 stops42h 43m

$500

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 10/7

7:35 am-5:20 pm

2 stops23h 45m

Bucharest Otopeni Intl

Tue 1/13

6:00 am-4:19 pm

2 stops20h 19m

$500

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 10/27

7:35 am-1:00 pm

2 stops44h 25m

Bucharest Otopeni Intl

Mon 11/10

1:55 pm-5:09 pm

2 stops37h 14m

$500

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 10/26

10:00 pm-1:00 pm

2 stops54h 00m

Bucharest Otopeni Intl

Thu 11/13

6:00 am-11:04 pm

2 stops27h 04m

$505

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 29 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 $1,132). 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 September 17, 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.

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 21h 55m. 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.

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

    To fly one-way, consider booking your trip with British Airways, which is currently one of the cheapest options available, starting at $384. United Airlines flights start at $411 while deals on Delta start at $478 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 $1,132). 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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