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Romania

$366+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Jul 9 — Jul 161
Thu 7/9
Thu 7/16
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 June 9, 2026.

This United Airlines deal was found by Cheapflights users on 6/4. 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.
Wed 8/127:00 am
ONT
-
CLJ
2 stops20h 10m
United Airlines
Wed 8/196:00 am
CLJ
-
ONT
2 stops24h 53m
United Airlines
Deal found 6/4$718
This Delta deal was found by Cheapflights users on 6/6. 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 11/177:00 am
ONT
-
OTP
2 stops21h 10m
Delta
Fri 11/276:00 am
OTP
-
ONT
2 stops22h 18m
Delta
Deal found 6/6$720
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/96:10 am
ONT
-
OTP
2 stops19h 50m
United Airlines
Wed 8/266:05 am
OTP
-
ONT
2 stops23h 56m
United Airlines
Deal found 6/8$722
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/96:10 am
ONT
-
OTP
2 stops19h 50m
United Airlines
Tue 8/256:15 am
OTP
-
ONT
2 stops21h 56m
United Airlines
Deal found 6/8$723
This United Airlines deal was found by Cheapflights users on 6/4. 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.
Sun 8/167:00 am
ONT
-
OTP
2 stops19h 00m
United Airlines
Tue 8/256:15 am
OTP
-
ONT
2 stops21h 56m
United Airlines
Deal found 6/4$724
This Iberia deal was found by Cheapflights users on 6/4. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:47 am
ONT
-
OTP
2 stops18h 58m
Multiple Airlines
Wed 12/168:05 am
OTP
-
ONT
2 stops24h 14m
Multiple Airlines
Deal found 6/4$725
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/21:50 pm
ONT
-
CLJ
2 stops41h 35m
United Airlines
Tue 8/186:00 am
CLJ
-
ONT
2 stops24h 53m
United Airlines
Deal found 6/8$733
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/111:18 pm
ONT
-
OTP
2 stops17h 02m
United Airlines
Wed 8/266:05 am
OTP
-
ONT
2 stops22h 11m
United Airlines
Deal found 6/8$734
This United Airlines deal was found by Cheapflights users on 6/8. 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 8/111:18 pm
ONT
-
OTP
2 stops17h 02m
United Airlines
Tue 8/256:15 am
OTP
-
ONT
2 stops24h 38m
United Airlines
Deal found 6/8$735
This United Airlines deal was found by Cheapflights users on 6/6. 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.
Wed 7/295:00 am
ONT
-
CLJ
2 stops26h 25m
United Airlines
Thu 9/101:50 pm
CLJ
-
ONT
2 stops19h 09m
United Airlines
Deal found 6/6$747
This United Airlines deal was found by Cheapflights users on 6/4. 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.
Wed 7/291:18 pm
ONT
-
OTP
2 stops19h 17m
United Airlines
Thu 8/136:05 am
OTP
-
ONT
2 stops26h 30m
United Airlines
Deal found 6/4$753
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/261:50 pm
ONT
-
OTP
3 stops42h 45m
United Airlines
Thu 8/136:05 am
OTP
-
ONT
3 stops23h 56m
United Airlines
Deal found 6/8$763

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 June 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$718
(United Airlines)

One-way from

$366
(United Airlines)

Popular in

June

Cheapest in

March

Average price

$1,034
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. 20% potential increase in price ($184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 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

Sun 8/9

6:10 am-1:10 pm

2 stops21h 00m

Cluj Napoca

Fri 8/21

6:00 am-6:11 pm

2 stops22h 11m

$718

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 8/12

7:00 am-1:10 pm

2 stops20h 10m

Cluj Napoca

Fri 8/21

6:00 am-8:01 pm

2 stops24h 01m

$718

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 8/12

7:00 am-1:10 pm

2 stops20h 10m

Cluj Napoca

Wed 8/19

6:00 am-8:53 pm

2 stops24h 53m

$718
Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 8/12

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Tue 8/25

6:15 am-6:11 pm

2 stops21h 56m

$723

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Sun 8/2

1:50 pm-5:25 pm

2 stops41h 35m

Cluj Napoca

Tue 8/18

6:00 am-8:53 pm

2 stops24h 53m

$733

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 7/29

5:00 am-5:25 pm

2 stops26h 25m

Cluj Napoca

Thu 9/10

1:50 pm-10:59 pm

2 stops19h 09m

$747

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 7/27

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Fri 8/14

6:05 am-8:01 pm

3 stops23h 56m

$753

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 9/16

9:01 am-5:25 pm

2 stops22h 24m

Cluj Napoca

Tue 9/22

6:00 am-8:01 pm

2 stops24h 01m

$778

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 7/25

4:20 pm-6:40 pm

2 stops40h 20m

Bucharest Otopeni Intl

Wed 8/12

1:45 pm-10:35 pm

2 stops42h 50m

$803

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Fri 7/24

6:39 pm-1:10 am

2 stops20h 31m

Bucharest Otopeni Intl

Thu 8/13

6:05 am-8:01 pm

3 stops23h 56m

$843

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/4

Showing 1-10 of 27 resultsSorted by cheapest first
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
No data available for this route at this time. Please check back soon.

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 9, 2026.
Peruse reviews from past customers who have flown with Delta and 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.
Delta
7.9
Good
8,394 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
7.9
Good
8,394 reviews
Delta
7.9
Good
8,394 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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
9,796 reviews
Delta
7.9
Good
8,394 reviews

Comfort

7.8

Entertainment

7.8

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.2

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.

  • How long is the flight from Ontario to Romania?

    Departing from Ontario to Romania will take you 21h. Ontario and Romania are separated by a distance of 6351 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

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Alternative routes for Ontario to Romania

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Top 2 airlines flying from Ontario to Romania

Discover the top 2 airlines 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 June 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$539Average$614FlexibilityNo cancel feeOn-time69%
DeltaCheapest$803Average$869FlexibilityNo cancel feeOn-timeN/A

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