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Otopeni Intl

$384+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OTP
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$469
(Travelocity)

One-way from

$384
(British Airways)

Popular in

December

Cheapest in

October

Average price

$688
From Ontario to Bucharest Otopeni Intl
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One-way flight from Ontario to Bucharest Otopeni Intl
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Highest demand for flights based on searches. 9% potential increase in price ($73 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 11, 2025.

This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/254:49 pmONT - OTP
2 stops57h 16mDelta
Wed 12/106:05 amOTP - ONT
2 stops27h 54mDelta
Deal found 9/10$487
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/251:20 pmONT - OTP
2 stops60h 45mDelta
Mon 12/81:55 pmOTP - ONT
2 stops36h 14mDelta
Deal found 9/10$489
This KLM deal was found by Cheapflights users on 9/9. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:00 amONT - OTP
2 stops23h 25mMultiple Airlines
Wed 12/108:40 amOTP - ONT
2 stops24h 23mMultiple Airlines
Deal found 9/9$490
This Delta deal was found by Cheapflights users on 9/9. 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 11/236:00 amONT - OTP
2 stops25h 10mDelta
Tue 12/96:05 amOTP - ONT
2 stops21h 02mDelta
Deal found 9/9$491
This Delta deal was found by Cheapflights users on 9/9. 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 11/236:00 amONT - OTP
2 stops25h 10mDelta
Mon 12/81:55 pmOTP - ONT
2 stops42h 52mDelta
Deal found 9/9$492
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/235:49 pmONT - OTP
2 stops57h 11mDelta
Wed 12/106:05 amOTP - ONT
2 stops26h 58mDelta
Deal found 9/10$499
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/245:05 amONT - OTP
2 stops27h 30mUnited Airlines
Wed 12/106:05 amOTP - ONT
3 stops26h 44mUnited Airlines
Deal found 9/9$513
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/299:35 pmONT - OTP
2 stops40h 15mUnited Airlines
Wed 12/106:05 amOTP - ONT
3 stops26h 44mUnited Airlines
Deal found 9/9$518
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/241:29 pmONT - OTP
2 stops19h 06mUnited Airlines
Fri 12/122:50 pmOTP - ONT
2 stops36h 47mUnited Airlines
Deal found 9/9$521
This United Airlines deal was found by Cheapflights users on 9/10. 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 11/267:00 amONT - OTP
2 stops22h 50mMultiple Airlines
Wed 12/106:05 amOTP - ONT
3 stops21h 32mMultiple Airlines
Deal found 9/10$524
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/299:35 pmONT - OTP
2 stops40h 15mUnited Airlines
Tue 12/92:50 pmOTP - ONT
2 stops31h 27mUnited Airlines
Deal found 9/9$526

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 September 11, 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

Tue 11/25

4:49 pm-12:05 pm

2 stops57h 16m

Bucharest Otopeni Intl

Tue 12/9

6:05 am-11:03 pm

2 stops26h 58m

$487

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 11/25

4:49 pm-12:05 pm

2 stops57h 16m

Bucharest Otopeni Intl

Wed 12/10

6:05 am-11:59 pm

2 stops27h 54m

$487

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 11/26

6:00 am-12:05 pm

2 stops44h 05m

Bucharest Otopeni Intl

Tue 12/9

6:05 am-11:03 pm

2 stops26h 58m

$487

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/24

11:45 am-1:00 pm

2 stops39h 15m

Bucharest Otopeni Intl

Wed 12/10

6:05 am-11:03 pm

2 stops26h 58m

$491

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 11/23

6:00 am-5:10 pm

2 stops25h 10m

Bucharest Otopeni Intl

Tue 12/9

6:05 am-5:07 pm

2 stops21h 02m

$491

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 11/23

6:00 am-5:10 pm

2 stops25h 10m

Bucharest Otopeni Intl

Mon 12/8

1:55 pm-10:47 pm

2 stops42h 52m

$492

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/24

6:45 am-1:00 pm

2 stops44h 15m

Bucharest Otopeni Intl

Tue 12/9

6:05 am-11:03 pm

2 stops26h 58m

$499

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/24

6:45 am-1:00 pm

2 stops44h 15m

Bucharest Otopeni Intl

Mon 12/8

1:55 pm-4:09 pm

2 stops36h 14m

$500

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/24

5:05 am-6:35 pm

2 stops27h 30m

Bucharest Otopeni Intl

Wed 12/10

6:05 am-10:49 pm

3 stops26h 44m

$513

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 11/24

5:05 am-6:35 pm

2 stops27h 30m

Bucharest Otopeni Intl

Fri 12/12

2:50 pm-10:49 pm

3 stops41h 59m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 23 results
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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, November is the cheapest month in which you can book a flight from Ontario to Bucharest Otopeni Intl Airport (average of $604). Flying from Ontario to Bucharest Otopeni Intl Airport in June is currently the most expensive (average of $1,130). 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 September 11, 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 morning. If you’re flexible enough to do this you can expect to save up to 38% on your trip compared to booking a flight at noon.

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 $487, Delta can have you in Bucharest Otopeni Intl Airport from Ontario in 57h 16m. 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, November is the cheapest month in which you can book a flight from Ontario to Bucharest Otopeni Intl Airport (average of $604). Flying from Ontario to Bucharest Otopeni Intl Airport in June is currently the most expensive (average of $1,130). 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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