HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$605+ Cheap flights from Bucharest (BUH) to Ontario (ONT)

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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
BUH — ONT
Mar 13 — Mar 201
Fri 3/13
Fri 3/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Bucharest to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 February 11, 2026.

This United Airlines deal was found by Cheapflights users on 2/10. 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.
Sat 3/72:50 pm
OTP
-
ONT
2 stops18h 07m
United Airlines
Sun 3/156:15 am
ONT
-
OTP
2 stops22h 50m
United Airlines
Deal found 2/10$964
This BusinessClass deal was found by Cheapflights users on 2/10. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:05 am
OTP
-
ONT
2 stops24h 44m
British Airways
Sun 3/1511:58 pm
ONT
-
OTP
2 stops38h 02m
British Airways
Deal found 2/10$1,051
This United Airlines deal was found by Cheapflights users on 2/8. 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 2/92:50 pm
OTP
-
ONT
2 stops18h 03m
United Airlines
Mon 2/166:00 am
ONT
-
OTP
2 stops22h 05m
United Airlines
Deal found 2/8$1,113
This British Airways deal was found by Cheapflights users on 2/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/198:00 am
OTP
-
ONT
2 stops25h 59m
British Airways
Mon 2/2311:58 pm
ONT
-
OTP
2 stops36h 57m
British Airways
Deal found 2/7$1,203
This Priceline deal was found by Cheapflights users on 2/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:15 am
OTP
-
ONT
2 stops23h 44m
British Airways
Mon 5/184:52 pm
ONT
-
OTP
2 stops22h 28m
British Airways
Deal found 2/11$1,252
This Iberia deal was found by Cheapflights users on 2/10. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/78:05 am
OTP
-
ONT
2 stops24h 44m
Multiple Airlines
Sun 3/1510:56 am
ONT
-
OTP
2 stops18h 59m
Multiple Airlines
Deal found 2/10$1,485
This Turkish Airlines deal was found by Cheapflights users on 2/11. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2812:55 pm
OTP
-
ONT
2 stops43h 14m
Turkish Airlines
Sat 5/3011:25 pm
ONT
-
OTP
2 stops22h 45m
Turkish Airlines
Deal found 2/11$1,802
This Iberia deal was found by Cheapflights users on 2/8. 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.
Sat 4/48:15 am
OTP
-
ONT
2 stops24h 15m
Multiple Airlines
Mon 4/2010:59 am
ONT
-
OTP
2 stops20h 21m
Multiple Airlines
Deal found 2/8$1,862
This Qatar Airways deal was found by Cheapflights users on 2/8. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/214:20 pm
OTP
-
ONT
2 stops34h 53m
Qatar Airways
Sun 4/52:39 pm
ONT
-
OTP
2 stops31h 06m
Qatar Airways
Deal found 2/8$1,904

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 February 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$964
(United Airlines)

One-way from

$605
(Iberia)

Popular in

July

Cheapest in

May

Average price

$870
Provider with most accurate pricing for Bucharest (BUH)-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bucharest (BUH)-Los Angeles flights.
Search Deals
From Bucharest (BUH) to Ontario
Search Deals
One-way flight 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 February 2026
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 February 11, 2026.
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

Sat 3/7

2:50 pm-10:57 pm

2 stops18h 07m

Ontario

Sun 3/15

6:15 am-2:05 pm

2 stops22h 50m

$964

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sat 3/7

8:05 am-10:49 pm

2 stops24h 44m

Ontario

Sun 3/15

11:58 pm-11:00 pm

2 stops38h 02m

$1,051

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Mon 5/4

8:15 am-9:59 pm

2 stops23h 44m

Ontario

Mon 5/18

4:52 pm-1:20 am

2 stops22h 28m

$1,252

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sat 3/7

8:05 am-10:49 pm

2 stops24h 44m

Ontario

Sun 3/15

10:56 am-2:55 pm

2 stops18h 59m

$1,485

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 5/28

12:55 pm-10:09 pm

2 stops43h 14m

Ontario

Sat 5/30

11:25 pm-8:10 am

2 stops22h 45m

$1,802

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sat 4/4

8:15 am-10:30 pm

2 stops24h 15m

Ontario

Mon 4/20

10:59 am-5:20 pm

2 stops20h 21m

$1,862

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sat 3/21

4:20 pm-6:13 pm

2 stops34h 53m

Ontario

Sun 4/5

2:39 pm-7:45 am

2 stops31h 06m

$1,904

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Mon 2/23

4:20 pm-1:49 pm

2 stops31h 29m

Ontario

Sun 3/8

2:39 pm-6:40 am

2 stops31h 01m

$2,656

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Fri 3/13

8:00 am-10:30 pm

2 stops23h 30m

Ontario

Sat 3/28

7:00 am-1:00 pm

2 stops21h 00m

$2,798

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Wed 4/1

8:15 am-11:59 pm

2 stops25h 44m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 20 results
1
2

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 $483). Flying from Bucharest to Ontario in July is currently the most expensive (average of $874). 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 18h 07m. Fly via United Airlines or British Airways to get the fastest option. There are 6541 mi between Bucharest and Ontario. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $483). Flying from Bucharest to Ontario in July is currently the most expensive (average of $874). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.