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Ontario

$797+ Cheap flights from Bucharest (BUH) to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
BUH — ONT
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Bucharest to Ontario

Cheapest flights from Bucharest to Ontario
Explore the most affordable flight options available from Bucharest to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This United Airlines deal was found by Cheapflights users on 12/18. 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 12/246:05 amOTP - ONT
2 stops26h 20mUnited Airlines
Wed 3/1111:59 pmONT - OTP
2 stops29h 06mUnited Airlines
Deal found 12/18$950
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/256:00 amOTP - ONT
2 stops21h 08mDelta
Wed 3/111:20 pmONT - OTP
2 stops18h 50mDelta
Deal found 12/17$1,000
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/242:40 pmOTP - ONT
2 stops37h 11mUnited Airlines
Thu 3/196:00 amONT - OTP
2 stops32h 50mUnited Airlines
Deal found 12/17$1,103
This Iberia deal was found by Cheapflights users on 12/18. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:00 amOTP - ONT
2 stops24h 14mMultiple Airlines
Wed 3/1110:56 amONT - OTP
2 stops19h 49mMultiple Airlines
Deal found 12/18$1,172
This oojo deal was found by Cheapflights users on 12/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/214:10 pmOTP - ONT
2 stops38h 48mBritish Airways
Sun 12/2812:45 pmONT - OTP
2 stops25h 00mBritish Airways
Deal found 12/19$1,351
This Iberia deal was found by Cheapflights users on 12/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/298:05 amOTP - ONT
2 stops24h 09mMultiple Airlines
Wed 3/1810:56 amONT - OTP
2 stops19h 49mMultiple Airlines
Deal found 12/20$1,387
This FlightHub deal was found by Cheapflights users on 12/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:00 amOTP - ONT
2 stops24h 14mBritish Airways
Wed 3/1110:56 amONT - OTP
2 stops19h 49mBritish Airways
Deal found 12/18$1,413
This Priceline deal was found by Cheapflights users on 12/20. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:00 amOTP - ONT
2 stops23h 52mBritish Airways
Sat 3/215:02 pmONT - OTP
2 stops21h 43mBritish Airways
Deal found 12/20$1,454
This United Airlines deal was found by Cheapflights users on 12/20. 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 12/295:55 amOTP - ONT
2 stops50h 30mUnited Airlines
Sat 3/2111:59 pmONT - OTP
2 stops38h 51mUnited Airlines
Deal found 12/20$1,480
This Priceline deal was found by Cheapflights users on 12/18. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:50 pmOTP - ONT
2 stops36h 28mBritish Airways
Thu 3/195:02 pmONT - OTP
2 stops21h 43mBritish Airways
Deal found 12/18$1,605
This United Airlines deal was found by Cheapflights users on 12/20. 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 12/285:55 amOTP - ONT
2 stops21h 48mUnited Airlines
Wed 3/186:00 amONT - OTP
2 stops23h 00mUnited Airlines
Deal found 12/20$1,638

Find flight deals from Bucharest to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Bucharest (BUH) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$797
(American Airlines)

Popular in

July

Cheapest in

March

Average price

$933
Provider with most accurate pricing for Bucharest (BUH)-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bucharest (BUH)-Ontario flights.
Search Deals
From Bucharest (BUH) to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Bucharest to Ontario 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 December 21, 2025.
Use the filters below to find and compare flights from Bucharest to Ontario that are best for you.

Fly from

Bucharest

Fly to

Ontario

Route

Depart

Return

Price

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Fri 1/23

8:00 am-10:13 pm

2 stops24h 13m

Ontario

Sun 1/25

3:09 pm-7:35 pm

2 stops18h 26m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sat 1/24

8:05 am-10:48 pm

2 stops24h 43m

Ontario

Fri 2/6

10:58 am-3:10 pm

2 stops18h 12m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 1/22

8:00 am-10:13 pm

2 stops24h 13m

Ontario

Sat 1/24

10:58 am-11:45 pm

2 stops50h 47m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Mon 1/26

8:05 am-10:48 pm

2 stops24h 43m

Ontario

Sun 2/8

10:58 am-7:35 pm

2 stops22h 37m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Mon 1/19

4:00 pm-10:48 pm

2 stops40h 48m

Ontario

Sun 1/25

7:16 am-11:45 pm

2 stops30h 29m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 1/22

4:35 pm-10:13 pm

2 stops39h 38m

Ontario

Tue 1/27

7:16 am-2:45 pm

2 stops21h 29m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Tue 1/20

8:00 am-2:18 pm

2 stops40h 18m

Ontario

Tue 1/27

4:45 pm-10:55 pm

2 stops20h 10m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 1/22

8:00 am-10:13 pm

2 stops24h 13m

Ontario

Mon 1/26

6:00 am-3:30 pm

2 stops23h 30m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 1/22

8:00 am-10:13 pm

2 stops24h 13m

Ontario

Sun 1/25

4:45 pm-11:45 pm

2 stops21h 00m

$800

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Fri 1/23

8:00 am-10:13 pm

2 stops24h 13m

Ontario

Tue 1/27

4:45 pm-10:55 pm

2 stops20h 10m

$800

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/19

Showing 1-10 of 14 results
1
2

Compare providers for flights from Bucharest to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Bucharest to Ontario in December.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Bucharest-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Bucharest-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Bucharest-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bucharest-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bucharest-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Bucharest to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Bucharest 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 Bucharest to Ontario

What is the cheapest month to book a flight from Bucharest to Ontario?

Currently, September is the cheapest month in which you can book a flight from Bucharest to Ontario (average of $485). Flying from Bucharest to Ontario in July is currently the most expensive (average of $844). 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.

Related info for your journey

Find useful and relevant information for your journey from Bucharest to Ontario. 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 into for flights to Ontario from Bucharest?

    If you book a flight to Ontario from Bucharest, you will be flying to Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Bucharest to Ontario per day from 0 different airlines.

  • How long is the flight from Bucharest to Ontario?

    There are many flights that can get you from Bucharest to Ontario in 24h 13m. Fly via British Airways to get the fastest option. There are 6541 mi between Bucharest and Ontario.

  • Can I find deals for flights from Bucharest to Ontario that include hotel bookings?

    Yes. In addition to deals on Bucharest to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bucharest to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Bucharest to Ontario.

  • Can I find deals for business class flights from Bucharest to Ontario?

    Yes. Cheapflights offers flight deals from Bucharest to Ontario 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 Bucharest to Ontario?

    Currently, September is the cheapest month in which you can book a flight from Bucharest to Ontario (average of $485). Flying from Bucharest to Ontario in July is currently the most expensive (average of $844). 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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