HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Romania

$411+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Romania with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 15, 2025.

Round-trip from

$493
(Ovago)

One-way from

$411
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$709
From Ontario to Romania
Search Deals
One-way flight from Ontario to Romania
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 15, 2025.

This Delta deal was found by Cheapflights users on 9/13. 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 11/235:49 pmONT - OTP
2 stops43h 01mDelta
Tue 12/96:05 amOTP - ONT
2 stops21h 02mDelta
Deal found 9/13$486
This Delta deal was found by Cheapflights users on 9/13. 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 11/235:49 pmONT - OTP
2 stops43h 01mDelta
Mon 12/81:55 pmOTP - ONT
2 stops55h 15mDelta
Deal found 9/13$487
This Delta deal was found by Cheapflights users on 9/13. 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 11/2310:25 pmONT - OTP
2 stops32h 45mDelta
Wed 12/106:05 amOTP - ONT
2 stops27h 54mDelta
Deal found 9/13$490
This KLM deal was found by Cheapflights users on 9/13. 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.
Tue 11/256:00 amONT - OTP
2 stops23h 25mMultiple Airlines
Thu 12/118:40 amOTP - ONT
2 stops24h 23mMultiple Airlines
Deal found 9/13$498
This Delta deal was found by Cheapflights users on 9/13. 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 11/266:45 amONT - OTP
2 stops44h 15mDelta
Tue 12/96:05 amOTP - ONT
2 stops21h 02mDelta
Deal found 9/13$499
This Delta deal was found by Cheapflights users on 9/13. 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 11/256:45 amONT - OTP
2 stops24h 25mDelta
Mon 12/81:55 pmOTP - ONT
2 stops44h 04mDelta
Deal found 9/13$500
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/245:05 amONT - OTP
2 stops27h 30mUnited Airlines
Tue 12/95:55 amOTP - ONT
3 stops26h 54mUnited Airlines
Deal found 9/13$521
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/267:00 amONT - OTP
2 stops22h 50mMultiple Airlines
Wed 12/106:05 amOTP - ONT
3 stops21h 32mMultiple Airlines
Deal found 9/13$523
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/299:35 pmONT - OTP
2 stops40h 15mUnited Airlines
Tue 12/95:55 amOTP - ONT
2 stops24h 47mUnited Airlines
Deal found 9/13$526
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 oojo deal was found by Cheapflights users on 9/13. 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.
Wed 10/292:51 pmONT - OTP
2 stops23h 39mBritish Airways
Wed 11/53:50 pmOTP - ONT
2 stops40h 33mBritish Airways
Deal found 9/13$536
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 12/165:05 amONT - CLJ
2 stops22h 35mUnited Airlines
Thu 1/156:00 amCLJ - ONT
2 stops26h 53mUnited Airlines
Deal found 9/15$853

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 15, 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

Wed 1/14

5:03 pm-8:00 pm

2 stops16h 57m

Bucharest Otopeni Intl

Wed 1/28

8:05 am-10:02 pm

2 stops23h 57m

$469

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/24

6:45 am-10:50 pm

2 stops30h 05m

Bucharest Otopeni Intl

Fri 12/12

6:05 am-11:59 pm

2 stops27h 54m

$486

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 11/23

5:49 pm-10:50 pm

2 stops43h 01m

Bucharest Otopeni Intl

Thu 12/11

6:05 am-5:07 pm

2 stops21h 02m

$486

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/24

6:45 am-10:50 pm

2 stops30h 05m

Bucharest Otopeni Intl

Wed 12/10

6:05 am-11:59 pm

2 stops27h 54m

$486

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 11/26

6:00 am-5:10 pm

2 stops25h 10m

Bucharest Otopeni Intl

Wed 12/10

6:05 am-11:10 am

2 stops39h 05m

$490

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 11/25

1:20 pm-5:10 pm

2 stops41h 50m

Bucharest Otopeni Intl

Tue 12/9

6:05 am-5:07 pm

2 stops21h 02m

$491

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 11/25

6:45 am-3:25 pm

2 stops22h 40m

Bucharest Otopeni Intl

Tue 12/9

8:40 am-11:03 pm

2 stops24h 23m

$498

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 11/26

6:45 am-1:00 pm

2 stops44h 15m

Bucharest Otopeni Intl

Tue 12/9

6:05 am-5:07 pm

2 stops21h 02m

$499

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/24

5:05 am-6:35 pm

2 stops27h 30m

Bucharest Otopeni Intl

Thu 12/11

5:50 am-10:49 pm

3 stops26h 59m

$521

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 11/23

1:40 pm-6:35 pm

2 stops42h 55m

Bucharest Otopeni Intl

Thu 12/11

5:50 am-10:49 pm

3 stops26h 59m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 26 results
1
2
3

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 $1,130). 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 15, 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 16h 57m. 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, 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 $1,130). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Romania

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Los Angeles to Charles de Gaulle flights
San Francisco to Charles de Gaulle flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Los Angeles to London City flights
Los Angeles to Istanbul flights
Los Angeles to Frankfurt flights
Los Angeles to Barcelona-El Prat flights
San Francisco to Barcelona-El Prat flights
San Francisco to Istanbul flights
San Francisco to Lisbon flights
Los Angeles to Madrid flights
Los Angeles to Gatwick flights
Los Angeles to Orly flights
San Francisco to Gatwick flights
San Francisco to London City flights
San Francisco to Orly flights
San Diego to Heathrow flights
San Francisco to Madrid flights
Los Angeles to Dublin flights
San Francisco to Dublin flights
Los Angeles to Amsterdam flights
San Francisco to Frankfurt flights
San Francisco to Zurich flights
San Francisco to Amsterdam flights
Ontario to Heathrow flights
Ontario to Charles de Gaulle flights
Ontario to Leonardo da Vinci/Fiumicino flights
Los Angeles to Stansted flights
Los Angeles to Zurich flights
San Francisco to Munich flights
Santa Ana to Leonardo da Vinci/Fiumicino flights
Los Angeles to Lisbon flights
Los Angeles to Luton flights
Santa Ana to Heathrow flights
Los Angeles to Munich flights
Los Angeles to Malpensa flights
San Francisco to Malpensa flights
San Francisco to Athens flights
Los Angeles to Athens flights
San Francisco to Linate flights
Santa Ana to Charles de Gaulle flights
Burbank to Charles de Gaulle flights
Los Angeles to Sabiha Gokcen flights
Las Vegas to Heathrow flights
Los Angeles to Copenhagen flights
Los Angeles to Linate flights
Los Angeles to Frederic Chopin flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.