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$335+ 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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
May 9 — May 161
Sat 5/9
Sat 5/16
1 adult, Economy
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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 April 9, 2026.

This United Airlines deal was found by Cheapflights users on 4/6. 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 8/187:13 pm
ONT
-
CLJ
2 stops36h 12m
United Airlines
Wed 9/21:50 pm
CLJ
-
ONT
2 stops38h 21m
United Airlines
Deal found 4/6$747
This United Airlines deal was found by Cheapflights users on 4/5. 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 9/71:18 pm
ONT
-
OTP
2 stops25h 52m
United Airlines
Thu 9/176:05 am
OTP
-
ONT
2 stops26h 53m
United Airlines
Deal found 4/5$752
This Delta deal was found by Cheapflights users on 4/5. 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 11/17:00 am
ONT
-
OTP
2 stops24h 10m
Delta
Sat 11/146:00 am
OTP
-
ONT
2 stops22h 18m
Delta
Deal found 4/5$774
This United Airlines deal was found by Cheapflights users on 4/7. 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 8/31:18 pm
ONT
-
OTP
2 stops17h 02m
United Airlines
Wed 8/261:45 pm
OTP
-
ONT
2 stops19h 13m
United Airlines
Deal found 4/7$783
This United Airlines deal was found by Cheapflights users on 4/5. 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.
Fri 10/165:00 am
ONT
-
CLJ
2 stops26h 25m
United Airlines
Tue 10/206:00 am
CLJ
-
ONT
2 stops21h 18m
United Airlines
Deal found 4/5$797
This United Airlines deal was found by Cheapflights users on 4/7. 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 8/178:00 am
ONT
-
OTP
2 stops24h 35m
United Airlines
Fri 8/281:45 pm
OTP
-
ONT
2 stops19h 13m
United Airlines
Deal found 4/7$802
This United Airlines deal was found by Cheapflights users on 4/4. 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 5/21:40 pm
ONT
-
OTP
2 stops40h 50m
United Airlines
Sat 5/91:55 pm
OTP
-
ONT
2 stops43h 04m
United Airlines
Deal found 4/4$803
This Delta deal was found by Cheapflights users on 4/9. 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 5/111:35 pm
ONT
-
OTP
2 stops17h 45m
Delta
Wed 5/207:05 am
OTP
-
ONT
2 stops21h 31m
Delta
Deal found 4/9$804
This American Airlines deal was found by Cheapflights users on 4/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/12:59 pm
ONT
-
OTP
2 stops22h 46m
American Airlines
Sat 11/148:05 am
OTP
-
ONT
2 stops25h 52m
American Airlines
Deal found 4/7$806
This Iberia deal was found by Cheapflights users on 4/7. 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.
Tue 9/810:25 am
ONT
-
OTP
2 stops19h 00m
Multiple Airlines
Tue 9/228:15 am
OTP
-
ONT
2 stops22h 53m
Multiple Airlines
Deal found 4/7$818
This Delta deal was found by Cheapflights users on 4/6. 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 4/710:25 pm
ONT
-
OTP
2 stops28h 20m
Delta
Thu 4/232:00 pm
OTP
-
ONT
2 stops36h 25m
Delta
Deal found 4/6$819
This Delta deal was found by Cheapflights users on 4/6. 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 4/1512:49 pm
ONT
-
OTP
2 stops37h 56m
Delta
Fri 4/247:05 am
OTP
-
ONT
2 stops19h 20m
Delta
Deal found 4/6$821

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 April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$747
(United Airlines)

One-way from

$335
(oojo)

Popular in

June

Cheapest in

January

Average price

$685
Provider with most accurate pricing for Los Angeles Los Angeles-Bucharest (BUH) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles 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. 15% potential increase in price ($125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 9, 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

Tue 8/18

7:13 pm-5:25 pm

2 stops36h 12m

Cluj Napoca

Wed 9/2

1:50 pm-6:11 pm

2 stops38h 21m

$747

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 9/7

1:18 pm-1:10 am

2 stops25h 52m

Bucharest Otopeni Intl

Thu 9/17

6:05 am-10:58 pm

2 stops26h 53m

$752
Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/3

1:18 pm-4:20 pm

2 stops17h 02m

Bucharest Otopeni Intl

Wed 8/26

1:45 pm-10:58 pm

2 stops19h 13m

$783

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/17

8:00 am-6:35 pm

2 stops24h 35m

Bucharest Otopeni Intl

Fri 8/28

1:45 pm-10:58 pm

2 stops19h 13m

$802

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 5/11

1:35 pm-5:20 pm

2 stops17h 45m

Bucharest Otopeni Intl

Wed 5/20

7:05 am-6:36 pm

2 stops21h 31m

$804

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 5/11

1:35 pm-5:20 pm

2 stops17h 45m

Bucharest Otopeni Intl

Tue 5/19

2:00 pm-5:10 pm

2 stops37h 10m

$804

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 4/22

11:53 am-12:45 pm

2 stops38h 52m

Bucharest Otopeni Intl

Mon 5/11

2:00 pm-5:10 pm

2 stops37h 10m

$821

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 4/20

10:15 pm-5:20 pm

2 stops33h 05m

Bucharest Otopeni Intl

Tue 5/12

7:05 am-6:36 pm

2 stops21h 31m

$824

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 4/20

10:15 pm-5:20 pm

2 stops33h 05m

Bucharest Otopeni Intl

Sun 5/10

2:00 pm-9:48 pm

2 stops41h 48m

$844

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Fri 4/24

5:05 pm-1:00 pm

2 stops33h 55m

Bucharest Otopeni Intl

Sun 5/10

2:00 pm-4:17 pm

2 stops36h 17m

$863

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 39 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Ontario to Romania (average of $441). Flying from Ontario to Romania in June is currently the most expensive (average of $715). 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.

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 April 9, 2026.
Peruse reviews from past customers who have flown with United Airlines from Ontario to Romania to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,554 reviews

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,554 reviews
United Airlines
7.4
Good
9,554 reviews

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 17h 45m. 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, September is the cheapest month in which you can book a flight from Ontario to Romania (average of $441). Flying from Ontario to Romania in June is currently the most expensive (average of $715). 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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Top airline flying from Ontario to Romania

Discover the top airline that operate flights from Ontario to Romania. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$539Average$614FlexibilityNo cancel feeOn-time69%

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