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$373+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Jul 27 — Aug 31
Mon 7/27
Mon 8/3
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 27, 2026.

This Air France deal was found by Cheapflights users on 6/26. 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 8/169:43 am
ONT
-
OTP
2 stops20h 07m
Multiple Airlines
Tue 8/258:35 am
OTP
-
ONT
2 stops21h 18m
Multiple Airlines
Deal found 6/26$709
This United deal was found by Cheapflights users on 6/26. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:00 am
ONT
-
CLJ
2 stops23h 40m
Multiple Airlines
Wed 11/42:25 pm
CLJ
-
ONT
2 stops18h 28m
Multiple Airlines
Deal found 6/26$716
This United Airlines deal was found by Cheapflights users on 6/26. 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 7/271:50 pm
ONT
-
OTP
2 stops42h 45m
United Airlines
Wed 8/196:05 am
OTP
-
ONT
2 stops26h 30m
United Airlines
Deal found 6/26$720
This United Airlines deal was found by Cheapflights users on 6/26. 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 8/41:18 pm
ONT
-
OTP
2 stops19h 17m
United Airlines
Wed 8/266:15 am
OTP
-
ONT
2 stops24h 38m
United Airlines
Deal found 6/26$722
This Delta deal was found by Cheapflights users on 6/23. 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 8/111:06 pm
ONT
-
OTP
2 stops18h 34m
Delta
Wed 8/197:05 am
OTP
-
ONT
2 stops25h 40m
Delta
Deal found 6/23$723
This United Airlines deal was found by Cheapflights users on 6/26. 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 11/86:36 pm
ONT
-
OTP
2 stops37h 59m
United Airlines
Tue 11/177:10 pm
OTP
-
ONT
2 stops33h 19m
United Airlines
Deal found 6/26$735
This Delta deal was found by Cheapflights users on 6/24. 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 10/187:00 am
ONT
-
OTP
2 stops19h 45m
Delta
Fri 10/306:00 am
OTP
-
ONT
2 stops19h 12m
Delta
Deal found 6/24$749
This United Airlines deal was found by Cheapflights users on 6/25. 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 8/121:18 pm
ONT
-
OTP
2 stops19h 17m
United Airlines
Fri 8/281:45 pm
OTP
-
ONT
2 stops19h 14m
United Airlines
Deal found 6/25$751
This United Airlines deal was found by Cheapflights users on 6/23. 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 10/211:45 pm
OTP
-
ONT
2 stops19h 14m
United Airlines
Deal found 6/23$752
This Delta deal was found by Cheapflights users on 6/23. 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 7/2710:00 pm
ONT
-
OTP
2 stops29h 00m
Delta
Wed 8/122:00 pm
OTP
-
ONT
2 stops38h 30m
Delta
Deal found 6/23$753
This United Airlines deal was found by Cheapflights users on 6/26. 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 8/191:18 pm
ONT
-
OTP
2 stops17h 02m
United Airlines
Wed 9/26:05 am
OTP
-
ONT
3 stops23h 56m
United Airlines
Deal found 6/26$762
This Air France deal was found by Cheapflights users on 6/24. 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 11/19:55 am
ONT
-
OTP
2 stops19h 55m
Multiple Airlines
Sat 11/146:00 am
OTP
-
ONT
2 stops20h 12m
Multiple Airlines
Deal found 6/24$768

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 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$709
(Air France)

One-way from

$373
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$1,122
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. 21% potential increase in price ($211 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 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 27, 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

Wed 10/28

5:00 am-1:40 pm

2 stops23h 40m

Cluj Napoca

Wed 11/4

2:25 pm-10:53 pm

2 stops18h 28m

$716

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 7/27

6:39 pm-6:35 pm

2 stops37h 56m

Bucharest Otopeni Intl

Wed 8/19

6:05 am-10:35 pm

2 stops26h 30m

$721
Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 8/9

6:39 pm-1:10 am

2 stops20h 31m

Bucharest Otopeni Intl

Fri 8/28

1:45 pm-10:59 pm

2 stops19h 14m

$751

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 8/4

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Wed 10/21

6:05 am-9:59 pm

2 stops25h 54m

$751

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 7/27

5:00 am-1:10 am

2 stops34h 10m

Bucharest Otopeni Intl

Mon 8/17

1:50 pm-8:01 pm

3 stops40h 11m

$772

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Mon 9/28

11:10 am-5:25 pm

2 stops20h 15m

Cluj Napoca

Fri 10/23

6:00 am-5:51 pm

2 stops21h 51m

$776

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Fri 10/16

11:10 am-5:25 pm

2 stops20h 15m

Cluj Napoca

Fri 10/23

6:00 am-5:51 pm

2 stops21h 51m

$796

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Sun 8/23

7:00 am-1:10 pm

2 stops20h 10m

Cluj Napoca

Sun 9/13

6:00 am-8:53 pm

2 stops24h 53m

$807

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Sun 8/2

1:50 pm-5:25 pm

2 stops41h 35m

Cluj Napoca

Tue 8/18

1:50 pm-12:12 pm

2 stops56h 22m

$816

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 9/24

4:03 pm-11:20 pm

2 stops21h 17m

Bucharest Otopeni Intl

Thu 10/8

1:45 pm-10:59 pm

2 stops19h 14m

$855

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

Showing 1-10 of 30 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
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 37h 56m. Ontario and Romania are separated by a distance of 6541 mi.

  • 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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