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Otopeni Intl

$374+ Cheap flights from Ontario (ONT) to Otopeni Intl (OTP)

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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Ontario to Otopeni Intl

Cheapest flights from Ontario to Otopeni Intl
Explore the most affordable flight options available from Ontario to Otopeni Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This United Airlines deal was found by Cheapflights users on 12/10. 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 12/106:00 amONT - OTP
2 stops22h 00mUnited Airlines
Wed 12/172:40 pmOTP - ONT
2 stops29h 21mUnited Airlines
Deal found 12/10$712
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/271:40 pmONT - OTP
2 stops48h 10mUnited Airlines
Fri 1/95:55 amOTP - ONT
3 stops40h 22mUnited Airlines
Deal found 12/11$848
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/266:00 amONT - OTP
2 stops31h 50mUnited Airlines
Fri 1/95:55 amOTP - ONT
2 stops25h 03mUnited Airlines
Deal found 12/11$1,145
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/241:40 pmONT - OTP
2 stops48h 10mUnited Airlines
Wed 12/312:40 pmOTP - ONT
2 stops41h 45mUnited Airlines
Deal found 12/10$1,150
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/3010:42 amONT - OTP
2 stops17h 13mUnited Airlines
Mon 1/52:50 pmOTP - ONT
2 stops42h 03mUnited Airlines
Deal found 12/11$1,308
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/316:00 amONT - OTP
2 stops31h 55mUnited Airlines
Sun 1/42:50 pmOTP - ONT
2 stops40h 18mUnited Airlines
Deal found 12/11$1,558
This United Airlines deal was found by Cheapflights users on 12/11. 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 12/146:41 pmONT - OTP
2 stops43h 14mUnited Airlines
Tue 1/65:55 amOTP - ONT
2 stops26h 58mUnited Airlines
Deal found 12/11$1,575
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/1310:47 amONT - OTP
2 stops18h 18mBritish Airways
Tue 12/308:00 amOTP - ONT
2 stops24h 14mBritish Airways
Deal found 12/10$1,673

Find flight deals from Ontario to Otopeni Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Otopeni Intl (OTP). 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 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$463
(Iberia)

One-way from

$374
(oojo)

Popular in

June

Cheapest in

October

Average price

$812
Provider with most accurate pricing for Ontario-Bucharest Otopeni Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Bucharest Otopeni Intl flights.
Search Deals
From Ontario to Bucharest Otopeni Intl
Search Deals
One-way flight from Ontario to Bucharest Otopeni Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($66 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 December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Otopeni Intl 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 12, 2025.
Use the filters below to find and compare flights from Ontario to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Ontario

Fly to

Otopeni Intl

Route

Depart

Return

Price

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 1/12

10:58 am-3:30 pm

2 stops18h 32m

Bucharest Otopeni Intl

Wed 1/28

8:05 am-10:48 pm

2 stops24h 43m

$464

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 1/11

4:45 pm-11:45 pm

2 stops21h 00m

Bucharest Otopeni Intl

Sun 1/25

7:35 am-10:48 pm

2 stops25h 13m

$492

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 3/29

5:02 pm-12:45 am

2 stops21h 43m

Bucharest Otopeni Intl

Sun 4/5

8:20 am-11:59 pm

2 stops25h 39m

$497

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 2/10

5:05 am-1:55 pm

2 stops22h 50m

Bucharest Otopeni Intl

Wed 4/8

1:50 pm-11:06 pm

2 stops19h 16m

$513

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 2/8

1:53 pm-11:50 pm

2 stops23h 57m

Bucharest Otopeni Intl

Tue 4/7

1:50 pm-11:06 pm

2 stops19h 16m

$513

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 4/9

11:01 am-2:30 pm

2 stops17h 29m

Bucharest Otopeni Intl

Thu 5/7

8:25 am-9:56 pm

2 stops23h 31m

$513

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 1/11

1:53 pm-11:50 pm

2 stops23h 57m

Bucharest Otopeni Intl

Tue 3/24

5:55 am-10:25 pm

2 stops25h 30m

$513

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 4/14

11:01 am-3:25 pm

2 stops18h 24m

Bucharest Otopeni Intl

Mon 4/27

8:25 am-9:56 pm

2 stops23h 31m

$513

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 1/11

1:53 pm-11:50 pm

2 stops23h 57m

Bucharest Otopeni Intl

Wed 3/25

6:05 am-10:25 pm

2 stops25h 20m

$513

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 1/19

6:00 am-2:05 pm

2 stops22h 05m

Bucharest Otopeni Intl

Fri 2/6

2:50 pm-10:53 pm

2 stops18h 03m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 23 results
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Compare providers for flights from Ontario to Otopeni Intl

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 Ontario to Otopeni Intl 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 Ontario-Bucharest Otopeni Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Bucharest Otopeni Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Bucharest Otopeni Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Bucharest Otopeni Intl Airport 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 Ontario-Bucharest Otopeni Intl Airport 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 Ontario to Otopeni Intl

Have a flexible travel schedule? Discover the best time to fly to Otopeni Intl 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 Bucharest Otopeni Intl Airport

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

Currently, September is the cheapest month in which you can book a flight from Ontario to Bucharest Otopeni Intl Airport (average of $441). Flying from Ontario to Bucharest Otopeni Intl Airport in June is currently the most expensive (average of $687). 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.

What is the cheapest time of day to fly from ONT to OTP?

Find hourly flight availability from Ontario to Otopeni Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Bucharest Otopeni Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Otopeni Intl. 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 Bucharest Otopeni Intl?

    If you book a flight to Bucharest Otopeni Intl from Ontario, you will be flying from 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 Ontario to Bucharest Otopeni Intl per day from 0 different airlines.

  • How long is the flight from Ontario to Bucharest Otopeni Intl Airport?

    For as low as $492, British Airways can have you in Bucharest Otopeni Intl Airport from Ontario in 21h. The distance between Ontario and Bucharest Otopeni Intl Airport is about 6541 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

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

  • How can I find direct flights from Ontario to Otopeni Intl?

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

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

    Yes. Cheapflights offers flight deals from Ontario to Otopeni Intl 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 Bucharest Otopeni Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Bucharest Otopeni Intl Airport (average of $441). Flying from Ontario to Bucharest Otopeni Intl Airport in June is currently the most expensive (average of $687). 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

Traveling to a place near Bucharest Otopeni Intl Airport?

Book flights to Bucharest Otopeni Intl Airport if you plan to visit one of these locations
Otopeni

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