HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Romania

$471+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
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

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 July 21, 2026.

This United Airlines deal was found by Cheapflights users on 7/20. 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 8/171:18 pm
ONT
-
OTP
2 stops19h 17m
United Airlines
Mon 8/2412:45 pm
OTP
-
ONT
2 stops42h 08m
United Airlines
Deal found 7/20$733
This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/146:08 am
ONT
-
CLJ
2 stops25h 17m
United Airlines
Wed 9/306:00 am
CLJ
-
ONT
2 stops40h 18m
United Airlines
Deal found 7/16$746
This Delta deal was found by Cheapflights users on 7/19. 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 8/256:20 am
ONT
-
OTP
2 stops21h 20m
Delta
Thu 10/157:05 am
OTP
-
ONT
2 stops20h 07m
Delta
Deal found 7/19$749
This United Airlines deal was found by Cheapflights users on 7/19. 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 8/181:18 pm
ONT
-
OTP
2 stops19h 17m
United Airlines
Tue 10/136:05 am
OTP
-
ONT
2 stops21h 36m
United Airlines
Deal found 7/19$752
This United Airlines deal was found by Cheapflights users on 7/18. 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 9/27:00 am
ONT
-
OTP
2 stops19h 50m
United Airlines
Tue 9/156:05 am
OTP
-
ONT
3 stops23h 56m
United Airlines
Deal found 7/18$763
This KAYAK deal was found by Cheapflights users on 7/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/131:52 pm
ONT
-
CLJ
2 stops24h 38m
Lufthansa
Tue 11/102:25 pm
CLJ
-
ONT
2 stops18h 28m
Lufthansa
Deal found 7/17$766
This Air France deal was found by Cheapflights users on 7/19. 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.
Sun 11/16:00 am
ONT
-
OTP
2 stops23h 50m
Multiple Airlines
Sat 11/146:00 am
OTP
-
ONT
2 stops21h 17m
Multiple Airlines
Deal found 7/19$768
This United Airlines deal was found by Cheapflights users on 7/20. 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 10/115:00 am
ONT
-
OTP
2 stops27h 35m
United Airlines
Mon 10/191:50 pm
OTP
-
ONT
2 stops54h 33m
United Airlines
Deal found 7/20$772
This United Airlines deal was found by Cheapflights users on 7/18. 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 8/311:18 pm
ONT
-
OTP
2 stops19h 17m
United Airlines
Fri 9/116:05 am
OTP
-
ONT
2 stops22h 06m
United Airlines
Deal found 7/18$782
This Delta deal was found by Cheapflights users on 7/19. 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.
Thu 12/3112:00 pm
ONT
-
OTP
2 stops19h 00m
Delta
Thu 1/76:00 am
OTP
-
ONT
2 stops20h 12m
Delta
Deal found 7/19$803
This Delta deal was found by Cheapflights users on 7/19. 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 8/256:20 am
ONT
-
OTP
2 stops21h 20m
Delta
Mon 10/197:05 am
OTP
-
ONT
2 stops25h 38m
Delta
Deal found 7/19$809
This United Airlines deal was found by Cheapflights users on 7/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:00 am
ONT
-
OTP
2 stops27h 35m
United Airlines
Sun 9/206:05 am
OTP
-
ONT
2 stops25h 54m
United Airlines
Deal found 7/17$811

Find flight deals from Ontario to Romania

Keep the following information in mind while searching for Ontario to Romania flight deals. Data was last updated July 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$733
(United Airlines)

One-way from

$471
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$987
Provider with most accurate pricing for Los Angeles-Bucharest (BUH) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Bucharest (BUH) flights.
Search Deals
From Ontario to Romania
Search Deals
One-way flight from Ontario to Romania
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($213 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

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 July 21, 2026.
Use the filters below to find and compare flights from Ontario to Romania that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Mon 9/14

6:08 am-5:25 pm

2 stops25h 17m

Cluj Napoca

Wed 9/30

6:00 am-12:18 pm

2 stops40h 18m

$746

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 8/25

6:20 am-1:40 pm

2 stops21h 20m

Bucharest Otopeni Intl

Thu 10/15

7:05 am-5:12 pm

2 stops20h 07m

$749
Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/17

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Thu 9/3

1:45 pm-10:59 pm

2 stops19h 14m

$752

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/17

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Tue 9/1

6:05 am-6:11 pm

2 stops22h 06m

$752

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 8/19

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Thu 10/15

1:45 pm-10:59 pm

2 stops19h 14m

$752

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 8/19

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Thu 9/3

1:45 pm-10:59 pm

2 stops19h 14m

$752

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Tue 10/13

1:52 pm-12:30 am

2 stops24h 38m

Cluj Napoca

Tue 11/10

2:25 pm-10:53 pm

2 stops18h 28m

$766

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 9/5

1:18 pm-11:40 pm

2 stops48h 22m

Bucharest Otopeni Intl

Sat 9/19

6:05 am-8:01 pm

3 stops23h 56m

$823

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 9/12

1:18 pm-6:35 pm

2 stops43h 17m

Bucharest Otopeni Intl

Sun 9/27

6:55 pm-10:49 pm

2 stops37h 54m

$826

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 8/9

6:39 pm-6:35 pm

2 stops37h 56m

Bucharest Otopeni Intl

Sun 8/23

6:15 am-8:53 pm

2 stops24h 38m

$848

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/18

Showing 1-10 of 32 resultsSorted by cheapest first
1
2
3
4

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

No data available for this route at this time. Please check back soon.

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 20m. 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.

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
Los Angeles to Charles de Gaulle flights
San Francisco to Heathrow flights
Los Angeles to Leonardo da Vinci/Fiumicino flights
San Francisco to Charles de Gaulle flights
San Francisco to Leonardo da Vinci/Fiumicino flights
San Francisco to Barcelona-El Prat flights
Los Angeles to Madrid flights
Los Angeles to Gatwick flights
San Francisco to Istanbul flights
Los Angeles to Stansted flights
Los Angeles to Barcelona-El Prat flights
Los Angeles to Istanbul flights
Los Angeles to Orly flights
Los Angeles to Dublin flights
San Francisco to Gatwick flights
San Francisco to London City flights
Los Angeles to Frankfurt flights
Los Angeles to London City flights
San Francisco to Stansted flights
Los Angeles to Amsterdam flights
San Francisco to Dublin flights
San Diego to Heathrow flights
Los Angeles to Zurich flights
Los Angeles to Athens flights
San Francisco to Zurich flights
San Francisco to Amsterdam flights
Los Angeles to Lisbon flights
Ontario to Heathrow flights
San Francisco to Madrid flights
San Francisco to Frankfurt flights
San Francisco to Athens flights
Los Angeles to Munich flights
San Francisco to Munich flights
Los Angeles to Palma de Mallorca flights
Ontario to Leonardo da Vinci/Fiumicino flights
San Francisco to Malpensa flights
Los Angeles to Frederic Chopin flights
Los Angeles to Malpensa flights
Los Angeles to Luton flights
San Francisco to Lisbon flights
Los Angeles to Keflavik Intl flights
San Francisco to Linate flights
Las Vegas to Heathrow 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.