What airlines fly to Bucharest?

Lufthansa, Turkish Airlines and British Airways are the top three most popular airlines that fly to Bucharest from Ontario according to our data. Lufthansa is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Bucharest. Keep in mind that there are 10 different airlines that fly to Bucharest on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Bucharest?

United Airlines is the most popular carrier operating from Ontario to Bucharest

When did momondo last update prices for flights from Ontario Airport to Bucharest?

Prices for flights from Ontario Airport to Bucharest are refreshed on a daily basis.

How many operators does momondo search for flights from Ontario Airport to Bucharest?

As of October 2026, there is 1 operator available to choose from for flights from Ontario Airport to Bucharest.

How old do you have to be to fly from Ontario Airport to Bucharest?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Bucharest.

What documentation or ID do you need to fly to Bucharest?

The required travel and health documents for your Bucharest trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bucharest. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$324 Cheap Flights from Ontario to Bucharest in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Bucharest

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:22 pm - 12:05 amONT Ontario-OTP Bucharest Otopeni Intl

23h 43m2 stops Dallas/Fort Worth London Heathrow

8:15 am - 11:45 pmOTP Bucharest Otopeni Intl-ONT Ontario

25h 30m2 stops London Heathrow Dallas/Fort Worth

$704British Airways

Wed, Dec 2 - Thu, Feb 25

1:24 pm - 12:05 amONT Ontario-OTP Bucharest Otopeni Intl

24h 41m2 stops Phoenix Sky Harbor Intl London Heathrow

4:00 pm - 10:08 pmOTP Bucharest Otopeni Intl-ONT Ontario

40h 08m2 stops London Heathrow Phoenix Sky Harbor Intl

$713British Airways

Mon, Feb 1 - Mon, Feb 15

4:59 pm - 12:05 amONT Ontario-OTP Bucharest Otopeni Intl

21h 06m2 stops Phoenix Sky Harbor Intl London Heathrow

4:00 pm - 10:07 pmOTP Bucharest Otopeni Intl-ONT Ontario

39h 07m2 stops London Heathrow Phoenix Sky Harbor Intl

$713British Airways

Mon, Mar 1 - Mon, Mar 15

12:26 pm - 12:05 amONT Ontario-OTP Bucharest Otopeni Intl

25h 39m2 stops Phoenix Sky Harbor Intl London Heathrow

4:25 pm - 10:07 pmOTP Bucharest Otopeni Intl-ONT Ontario

38h 42m2 stops London Heathrow Phoenix Sky Harbor Intl

$713British Airways

Tue, Mar 2 - Tue, Mar 16

4:59 pm - 12:05 amONT Ontario-OTP Bucharest Otopeni Intl

21h 06m2 stops Phoenix Sky Harbor Intl London Heathrow

8:25 am - 10:07 pmOTP Bucharest Otopeni Intl-ONT Ontario

22h 42m2 stops London Heathrow Phoenix Sky Harbor Intl

$713British Airways

Wed, Mar 3 - Wed, Mar 17

4:17 pm - 1:00 amONT Ontario-OTP Bucharest Otopeni Intl

22h 43m2 stops San Francisco Munich Franz Josef Strauss

6:00 am - 8:15 pmOTP Bucharest Otopeni Intl-ONT Ontario

24h 15m2 stops Frankfurt am Main San Francisco

$720United Airlines

Tue, Nov 17 - Tue, Nov 24

1:29 pm - 6:30 pmONT Ontario-OTP Bucharest Otopeni Intl

19h 01m2 stops Denver Intl Munich Franz Josef Strauss

6:00 am - 9:11 pmOTP Bucharest Otopeni Intl-ONT Ontario

25h 11m2 stops Frankfurt am Main Denver Intl

$720United Airlines

Tue, Nov 24 - Tue, Dec 8

12:18 pm - 3:50 pmONT Ontario-OTP Bucharest Otopeni Intl

17h 32m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

5:55 am - 4:22 pmOTP Bucharest Otopeni Intl-ONT Ontario

20h 27m2 stops Paris Charles de Gaulle Salt Lake City

$725Air France

Wed, Nov 25 - Wed, Dec 9

11:20 am - 6:35 pmONT Ontario-OTP Bucharest Otopeni Intl

21h 15m2 stops San Francisco Munich Franz Josef Strauss

1:45 pm - 11:06 pmOTP Bucharest Otopeni Intl-ONT Ontario

19h 21m2 stops Frankfurt am Main San Francisco

$725United Airlines

Tue, Mar 30 - Tue, Apr 13

5:00 am - 1:55 pmONT Ontario-OTP Bucharest Otopeni Intl

22h 55m2 stops Denver Intl Frankfurt am Main

6:00 am - 8:20 pmOTP Bucharest Otopeni Intl-ONT Ontario

24h 20m3 stops Frankfurt am Main Newark Denver Intl

$731United Airlines

Wed, Dec 2 - Thu, Feb 25

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United Airlines flights from Ontario to Bucharest

Our best United Airlines deals on Ontario to Bucharest flight tickets

United Airlines

Nov 17

ONT4:17 pmOntario

22h 43m

2 stops

OTP1:00 amBucharest Otopeni Intl

Nov 24

OTP6:00 amBucharest Otopeni Intl

24h 15m

2 stops

ONT8:15 pmOntario

$720

United Airlines

Dec 30

ONT5:00 amOntario

22h 55m

2 stops

OTP1:55 pmBucharest Otopeni Intl

Jan 13

OTP6:00 amBucharest Otopeni Intl

24h 20m

3 stops

ONT8:20 pmOntario

$731

United Airlines

Dec 29

ONT5:00 amOntario

22h 55m

2 stops

OTP1:55 pmBucharest Otopeni Intl

Jan 12

OTP6:00 amBucharest Otopeni Intl

24h 20m

2 stops

ONT8:20 pmOntario

$732

British Airways flights from Ontario to Bucharest

Our best British Airways deals on Ontario to Bucharest flight tickets

British Airways

Dec 2

ONT2:22 pmOntario

23h 43m

2 stops

OTP12:05 amBucharest Otopeni Intl

Feb 25

OTP8:15 amBucharest Otopeni Intl

25h 30m

2 stops

ONT11:45 pmOntario

$704

British Airways

Feb 1

ONT1:24 pmOntario

24h 41m

2 stops

OTP12:05 amBucharest Otopeni Intl

Feb 15

OTP4:00 pmBucharest Otopeni Intl

40h 08m

2 stops

ONT10:08 pmOntario

$713

British Airways

Mar 2

ONT4:59 pmOntario

21h 06m

2 stops

OTP12:05 amBucharest Otopeni Intl

Mar 16

OTP8:20 amBucharest Otopeni Intl

22h 47m

2 stops

ONT10:07 pmOntario

$733

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Wed 12/2

2:22 pm-12:05 am

2 stops23h 43m

Bucharest Otopeni Intl

Thu 2/25

8:15 am-11:45 pm

2 stops25h 30m

$704

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Mon 2/1

1:24 pm-12:05 am

2 stops24h 41m

Bucharest Otopeni Intl

Mon 2/15

4:00 pm-10:08 pm

2 stops40h 08m

$713

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Mon 3/1

4:59 pm-12:05 am

2 stops21h 06m

Bucharest Otopeni Intl

Mon 3/15

4:00 pm-10:07 pm

2 stops39h 07m

$713

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Tue 3/2

12:26 pm-12:05 am

2 stops25h 39m

Bucharest Otopeni Intl

Tue 3/16

4:25 pm-10:07 pm

2 stops38h 42m

$713

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Wed 3/3

4:59 pm-12:05 am

2 stops21h 06m

Bucharest Otopeni Intl

Wed 3/17

8:25 am-10:07 pm

2 stops22h 42m

$713

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Tue 11/17

4:17 pm-1:00 am

2 stops22h 43m

Bucharest Otopeni Intl

Tue 11/24

6:00 am-8:15 pm

2 stops24h 15m

$720

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Tue 11/24

1:29 pm-6:30 pm

2 stops19h 01m

Bucharest Otopeni Intl

Tue 12/8

6:00 am-9:11 pm

2 stops25h 11m

$720

Quickest round-trip

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Wed 11/25

12:18 pm-3:50 pm

2 stops17h 32m

Bucharest Otopeni Intl

Wed 12/9

5:55 am-4:22 pm

2 stops20h 27m

$725

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Tue 3/30

11:20 am-6:35 pm

2 stops21h 15m

Bucharest Otopeni Intl

Tue 4/13

1:45 pm-11:06 pm

2 stops19h 21m

$725

OntarioBucharest

ONT Ontario - OTP Bucharest Otopeni Intl

ONTOTP

Ontario

Wed 12/2

5:00 am-1:55 pm

2 stops22h 55m

Bucharest Otopeni Intl

Thu 2/25

6:00 am-8:20 pm

3 stops24h 20m

$731

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Bucharest

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest month to fly to Bucharest?

In general, February is the cheapest month to fly from Ontario to Bucharest. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel to Bucharest during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $0.

When to book flights from Ontario to Bucharest

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Bucharest according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Bucharest (ONT to BUH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Bucharest

Best Price Found	$324
Fastest flight time	19h 13m
Direct flights	None

The best one-way flight to Bucharest from Ontario in the past 72 hours is $324. The best round-trip flight deal from Ontario to Bucharest found on momondo in the last 72 hours is $704.

The fastest flight from Ontario to Bucharest takes 19h 13m

There are no direct flights from Ontario to Bucharest. There are no popular flight routes from Ontario to Bucharest.

Search flight deals

Frequently asked questions about flying from Ontario to Bucharest

How far is Ontario to Bucharest by plane?
A flight from Ontario to Bucharest will travel around 6550.5 mi. A reasonable flight in good conditions will take 19h 13m.
When did momondo last update prices for flights from Ontario Airport to Bucharest?
Prices for flights from Ontario Airport to Bucharest are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario Airport to Bucharest?
As of October 2026, there is 1 operator available to choose from for flights from Ontario Airport to Bucharest.
How old do you have to be to fly from Ontario Airport to Bucharest?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Bucharest.
What documentation or ID do you need to fly to Bucharest?
The required travel and health documents for your Bucharest trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Bucharest. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Ontario to Bucharest

Compare and see reviews for airlines that fly from Ontario to Bucharest with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $539	Free Cancellation	Rating 7.4 10,283 reviews		Search United Airlines flights

Otopeni

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Bucharest?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ontario to Bucharest for you.

Can I find flights from Ontario to Bucharest with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Bucharest from Ontario with this policy.

How can momondo help me find flights from Ontario to Bucharest?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Bucharest from Ontario.

I’m not ready to book a flight from Ontario to Bucharest right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Bucharest now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Bucharest and let you know when they change.

An easier way to manage your Bucharest trip

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Cheap flights from Ontario to Bucharest from $324

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Bucharest departing on 2/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from Ontario to Bucharest

Our best United Airlines deals on Ontario to Bucharest flight tickets

British Airways flights from Ontario to Bucharest

Our best British Airways deals on Ontario to Bucharest flight tickets

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How to get the cheapest flight ticket from Ontario to Bucharest

What is the cheapest month to fly to Bucharest?

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What airlines fly to Bucharest?

When to book flights from Ontario to Bucharest

Cheap Ontario to Bucharest (ONT to BUH) flight deals and tips

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Frequently asked questions about flying from Ontario to Bucharest

Best airlines flying from Ontario to Bucharest

Compare and see reviews for airlines that fly from Ontario to Bucharest with momondo

Traveling to a place near Bucharest?

Why use momondo?

An easier way to manage your Bucharest trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Romania

Fly into one of these airports located in Bucharest

Airports listed have a maximum distance of 9.6 mi from Bucharest

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Bucharest

List of cabin classes available on flights landing in Bucharest. Availability may vary depending on flight origin and airline.

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