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Otopeni Intl

$402+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/106:15 am
ONT
-
OTP
2 stops22h 40m
United Airlines
Tue 3/175:55 am
OTP
-
ONT
2 stops20h 46m
United Airlines
Deal found 1/24$515
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Thu 2/266:10 am
ONT
-
OTP
2 stops21h 55m
United Airlines
Thu 3/125:50 am
OTP
-
ONT
2 stops24h 00m
United Airlines
Deal found 1/26$540
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Tue 4/1411:05 am
ONT
-
OTP
2 stops19h 15m
United Airlines
Thu 5/141:45 pm
OTP
-
ONT
2 stops19h 14m
United Airlines
Deal found 1/25$545
This United Airlines deal was found by Cheapflights users on 1/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:00 am
ONT
-
OTP
2 stops19h 00m
United Airlines
Thu 10/297:10 pm
OTP
-
ONT
2 stops36h 16m
United Airlines
Deal found 1/24$547
This oojo deal was found by Cheapflights users on 1/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/212:47 pm
ONT
-
OTP
2 stops25h 33m
British Airways
Fri 10/308:00 am
OTP
-
ONT
2 stops22h 35m
British Airways
Deal found 1/24$553
This United Airlines deal was found by Cheapflights users on 1/26. 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 4/2711:05 am
ONT
-
OTP
2 stops19h 15m
United Airlines
Mon 5/111:50 pm
OTP
-
ONT
2 stops19h 09m
United Airlines
Deal found 1/26$565
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Thu 4/211:05 am
ONT
-
OTP
2 stops19h 25m
United Airlines
Fri 4/1712:45 pm
OTP
-
ONT
2 stops19h 41m
United Airlines
Deal found 1/25$566
This oojo deal was found by Cheapflights users on 1/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/221:31 pm
ONT
-
OTP
2 stops25h 54m
British Airways
Mon 10/53:30 pm
OTP
-
ONT
2 stops40h 21m
British Airways
Deal found 1/26$583
This Booking.com deal was found by Cheapflights users on 1/23. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:54 pm
ONT
-
OTP
2 stops21h 56m
British Airways
Tue 10/68:25 am
OTP
-
ONT
2 stops23h 26m
British Airways
Deal found 1/23$598
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 2/276:10 am
ONT
-
OTP
2 stops22h 00m
United Airlines
Fri 3/135:55 am
OTP
-
ONT
2 stops20h 46m
United Airlines
Deal found 1/26$613
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Tue 2/108:00 am
ONT
-
OTP
2 stops19h 55m
United Airlines
Wed 3/256:05 am
OTP
-
ONT
2 stops25h 13m
United Airlines
Deal found 1/25$615
This oojo deal was found by Cheapflights users on 1/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/112:46 pm
ONT
-
OTP
2 stops25h 34m
British Airways
Sat 11/78:05 am
OTP
-
ONT
2 stops24h 18m
British Airways
Deal found 1/24$623

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$515
(United Airlines)

One-way from

$402
(Delta)

Popular in

June

Cheapest in

October

Average price

$596
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. 9% potential increase in price ($74 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 January 2026
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 January 26, 2026.
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

Wed 3/18

6:15 am-2:00 pm

2 stops22h 45m

Bucharest Otopeni Intl

Wed 4/1

6:05 am-9:50 pm

2 stops25h 45m

$515

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 3/10

6:15 am-1:55 pm

2 stops22h 40m

Bucharest Otopeni Intl

Tue 3/17

5:55 am-5:41 pm

2 stops20h 46m

$515

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 4/7

1:34 pm-4:20 pm

2 stops16h 46m

Bucharest Otopeni Intl

Wed 4/15

6:05 am-5:47 pm

2 stops21h 42m

$515

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 2/26

6:10 am-2:05 pm

2 stops21h 55m

Bucharest Otopeni Intl

Thu 3/12

5:50 am-8:50 pm

2 stops24h 00m

$540

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Fri 3/20

6:00 am-11:50 pm

2 stops32h 50m

Bucharest Otopeni Intl

Fri 4/3

1:45 pm-10:08 am

2 stops30h 23m

$540

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 3/1

5:00 am-2:05 pm

2 stops23h 05m

Bucharest Otopeni Intl

Sun 3/8

5:55 am-9:36 pm

2 stops25h 41m

$540

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 4/14

11:05 am-4:20 pm

2 stops19h 15m

Bucharest Otopeni Intl

Thu 5/14

1:45 pm-10:59 pm

2 stops19h 14m

$545

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 4/27

11:05 am-4:20 pm

2 stops19h 15m

Bucharest Otopeni Intl

Mon 5/11

1:50 pm-10:59 pm

2 stops19h 09m

$565

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 4/2

11:05 am-4:30 pm

2 stops19h 25m

Bucharest Otopeni Intl

Fri 4/17

12:45 pm-10:26 pm

2 stops19h 41m

$566

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 3/21

11:59 pm-2:05 pm

2 stops29h 06m

Bucharest Otopeni Intl

Sat 4/4

6:05 am-9:50 pm

2 stops25h 45m

$613

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 24 results
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2
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  • Most accurate provider: When it comes to deals on Ontario-Bucharest Otopeni Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Bucharest Otopeni Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 $690). 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 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 $515, United Airlines can have you in Bucharest Otopeni Intl Airport from Ontario in 22h 45m. The distance between Ontario and Bucharest Otopeni Intl Airport is about 6541 mi.

  • 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 $690). 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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