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$336+ 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
May 31 — Jun 71
Sun 5/31
Sun 6/7
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 May 1, 2026.

This Iberia deal was found by Cheapflights users on 4/27. 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 11/310:47 am
ONT
-
OTP
2 stops17h 58m
Multiple Airlines
Tue 11/108:00 am
OTP
-
ONT
2 stops24h 23m
Multiple Airlines
Deal found 4/27$760
This American Airlines deal was found by Cheapflights users on 4/29. 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 stops24h 18m
American Airlines
Deal found 4/29$773
This Delta deal was found by Cheapflights users on 4/27. 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 stops26h 43m
Delta
Deal found 4/27$775
This United Airlines deal was found by Cheapflights users on 4/27. 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 9/75:00 am
ONT
-
CLJ
2 stops26h 25m
United Airlines
Thu 9/106:00 am
CLJ
-
ONT
2 stops26h 58m
United Airlines
Deal found 4/27$783
This United Airlines deal was found by Cheapflights users on 5/1. 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 11/11:33 pm
ONT
-
OTP
2 stops43h 02m
United Airlines
Sun 11/157:10 pm
OTP
-
ONT
2 stops37h 16m
United Airlines
Deal found 5/1$787
This United Airlines deal was found by Cheapflights users on 4/29. 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 9/301:18 pm
ONT
-
OTP
2 stops17h 02m
United Airlines
Wed 10/1412:45 pm
OTP
-
ONT
2 stops19h 41m
United Airlines
Deal found 4/29$797
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 10/291:00 pm
ONT
-
OTP
2 stops20h 40m
United Airlines
Thu 11/127:10 pm
OTP
-
ONT
2 stops37h 16m
United Airlines
Deal found 4/28$800
This United Airlines deal was found by Cheapflights users on 4/30. 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 11/206:53 pm
ONT
-
CLJ
2 stops32h 47m
United Airlines
Thu 12/176:00 am
CLJ
-
ONT
2 stops26h 26m
United Airlines
Deal found 4/30$814
This United Airlines deal was found by Cheapflights users on 4/30. 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
Mon 8/246:00 am
CLJ
-
ONT
2 stops24h 52m
United Airlines
Deal found 4/30$816
This United Airlines deal was found by Cheapflights users on 4/27. 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 4/2911:05 am
ONT
-
OTP
2 stops21h 30m
United Airlines
Wed 5/1312:45 pm
OTP
-
ONT
2 stops19h 50m
United Airlines
Deal found 4/27$824
This Iberia deal was found by Cheapflights users on 4/29. 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 10/2710:25 am
ONT
-
OTP
2 stops19h 20m
Multiple Airlines
Tue 11/108:00 am
OTP
-
ONT
2 stops24h 23m
Multiple Airlines
Deal found 4/29$825
This United Airlines deal was found by Cheapflights users on 4/29. 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 10/307:00 am
ONT
-
OTP
2 stops26h 35m
United Airlines
Fri 11/137:10 pm
OTP
-
ONT
2 stops37h 16m
United Airlines
Deal found 4/29$838

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 May 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$783
(United Airlines)

One-way from

$336
(oojo)

Popular in

June

Cheapest in

March

Average price

$733
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. 15% potential increase in price ($125 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 1, 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 9/7

9:01 am-5:25 pm

2 stops22h 24m

Cluj Napoca

Thu 9/10

6:00 am-10:58 pm

2 stops26h 58m

$783

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 5/11

1:30 pm-1:10 am

2 stops25h 40m

Bucharest Otopeni Intl

Sun 5/17

6:15 am-10:59 pm

2 stops26h 44m

$914

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Wed 7/29

5:00 am-5:25 pm

2 stops26h 25m

Cluj Napoca

Sun 8/16

6:00 am-6:19 pm

2 stops22h 19m

$1,067

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 9/28

4:03 pm-11:50 pm

2 stops21h 47m

Bucharest Otopeni Intl

Mon 10/12

1:50 pm-10:59 pm

2 stops19h 09m

$1,104

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 9/1

11:50 pm-3:20 pm

2 stops29h 30m

Bucharest Otopeni Intl

Mon 9/14

4:30 am-8:13 pm

2 stops25h 43m

$1,188

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 6/20

5:45 am-6:35 pm

2 stops26h 50m

Bucharest Otopeni Intl

Sat 7/4

6:05 am-9:57 pm

2 stops25h 52m

$1,217
Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Fri 9/25

1:31 pm-7:05 pm

2 stops19h 34m

Bucharest Otopeni Intl

Fri 10/9

8:15 am-6:57 pm

2 stops20h 42m

$1,238

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 5/26

10:41 pm-2:35 pm

2 stops29h 54m

Bucharest Otopeni Intl

Tue 6/2

3:55 pm-8:47 pm

2 stops38h 52m

$1,294

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 5/31

10:41 pm-4:25 pm

2 stops31h 44m

Bucharest Otopeni Intl

Tue 6/9

4:05 pm-8:47 pm

2 stops38h 42m

$1,380

OntarioCluj Napoca

ONT - CLJ

ONTCLJ

Ontario

Sat 7/18

5:45 am-5:25 pm

2 stops25h 40m

Cluj Napoca

Sat 8/8

6:00 am-10:51 pm

2 stops26h 51m

$1,423

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 40 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.

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 May 1, 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
9,675 reviews

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

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
9,675 reviews
United Airlines
7.4
Good
9,675 reviews

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

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 22h 24m. 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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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 May 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$539Average$614FlexibilityNo cancel feeOn-time69%

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