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 May 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.

$349 Cheap Flights from Ontario to Bucharest in 2026

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Find the cheapest flights from Ontario to Bucharest

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:18 pm - 4:20 pm

ONT

OTP

17h 02m

2 stops

6:15 am - 8:01 pm

OTP

ONT

23h 46m

2 stops

$737United Airlines

Tue, Aug 11 - Tue, Aug 25

5:45 am - 6:35 pm

ONT

OTP

26h 50m

2 stops

1:45 pm - 9:59 pm

OTP

ONT

42h 14m

2 stops

$743United Airlines

Wed, Aug 5 - Wed, Aug 19

4:20 pm - 6:35 pm

ONT

OTP

40h 15m

2 stops

6:15 am - 6:16 pm

OTP

ONT

22h 01m

2 stops

$774United Airlines

Sat, Aug 8 - Sat, Aug 22

10:47 am - 11:45 pm

ONT

OTP

26h 58m

2 stops

8:05 am - 10:23 pm

OTP

ONT

24h 18m

2 stops

$775Multiple Airlines

Sun, Nov 1 - Sat, Nov 14

1:18 pm - 4:20 pm

ONT

OTP

17h 02m

2 stops

1:50 pm - 10:59 pm

OTP

ONT

19h 09m

2 stops

$797United Airlines

Tue, Oct 6 - Tue, Oct 20

7:00 am - 12:00 pm

ONT

OTP

19h 00m

2 stops

12:45 pm - 10:59 pm

OTP

ONT

20h 14m

2 stops

$819United Airlines

Sun, Aug 30 - Thu, Sep 3

6:10 am - 2:55 pm

ONT

OTP

22h 45m

2 stops

8:05 am - 11:57 pm

OTP

ONT

25h 52m

2 stops

$821American Airlines

Sun, Nov 1 - Sat, Nov 14

12:55 pm - 11:45 pm

ONT

OTP

24h 50m

2 stops

8:05 am - 10:23 pm

OTP

ONT

24h 18m

2 stops

$823British Airways

Sun, Nov 1 - Sat, Nov 14

2:59 pm - 11:45 pm

ONT

OTP

22h 46m

2 stops

8:05 am - 11:57 pm

OTP

ONT

25h 52m

2 stops

$824British Airways

Sun, Nov 1 - Sat, Nov 14

10:47 am - 3:45 pm

ONT

OTP

18h 58m

2 stops

8:05 am - 10:23 pm

OTP

ONT

24h 18m

2 stops

$825Multiple Airlines

Wed, Nov 4 - Wed, Nov 18

United Airlines flights from Ontario to Bucharest

Our best United Airlines deals on Ontario to Bucharest flight tickets

United Airlines

Aug 11

ONT1:18 pmOntario

17h 02m

2 stops

OTP4:20 pmBucharest Otopeni Intl

Aug 25

OTP6:15 amBucharest Otopeni Intl

23h 46m

2 stops

ONT8:01 pmOntario

$737

United Airlines

Aug 5

ONT5:45 amOntario

26h 50m

2 stops

OTP6:35 pmBucharest Otopeni Intl

Aug 19

OTP1:45 pmBucharest Otopeni Intl

42h 14m

2 stops

ONT9:59 pmOntario

$743

United Airlines

Aug 8

ONT4:20 pmOntario

40h 15m

2 stops

OTP6:35 pmBucharest Otopeni Intl

Aug 22

OTP6:15 amBucharest Otopeni Intl

22h 01m

2 stops

ONT6:16 pmOntario

$774

British Airways flights from Ontario to Bucharest

Our best British Airways deals on Ontario to Bucharest flight tickets

British Airways

Nov 1

ONT12:55 pmOntario

24h 50m

2 stops

OTP11:45 pmBucharest Otopeni Intl

Nov 14

OTP8:05 amBucharest Otopeni Intl

24h 18m

2 stops

ONT10:23 pmOntario

$823

British Airways

Nov 1

ONT2:59 pmOntario

22h 46m

2 stops

OTP11:45 pmBucharest Otopeni Intl

Nov 14

OTP8:05 amBucharest Otopeni Intl

25h 52m

2 stops

ONT11:57 pmOntario

$824

British Airways

Oct 7

ONT12:35 pmOntario

25h 45m

2 stops

OTP12:20 amBucharest Otopeni Intl

Oct 21

OTP8:15 amBucharest Otopeni Intl

22h 53m

2 stops

ONT9:08 pmOntario

$857

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 8/11

1:18 pm-4:20 pm

2 stops17h 02m

Bucharest Otopeni Intl

Tue 8/25

6:15 am-8:01 pm

2 stops23h 46m

$737

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 8/5

5:45 am-6:35 pm

2 stops26h 50m

Bucharest Otopeni Intl

Wed 8/19

1:45 pm-9:59 pm

2 stops42h 14m

$743

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sat 8/8

4:20 pm-6:35 pm

2 stops40h 15m

Bucharest Otopeni Intl

Sat 8/22

6:15 am-6:16 pm

2 stops22h 01m

$774

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 11/1

10:47 am-11:45 pm

2 stops26h 58m

Bucharest Otopeni Intl

Sat 11/14

8:05 am-10:23 pm

2 stops24h 18m

$775

Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 10/6

1:18 pm-4:20 pm

2 stops17h 02m

Bucharest Otopeni Intl

Tue 10/20

1:50 pm-10:59 pm

2 stops19h 09m

$797

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 8/30

7:00 am-12:00 pm

2 stops19h 00m

Bucharest Otopeni Intl

Thu 9/3

12:45 pm-10:59 pm

2 stops20h 14m

$819

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 11/1

6:10 am-2:55 pm

2 stops22h 45m

Bucharest Otopeni Intl

Sat 11/14

8:05 am-11:57 pm

2 stops25h 52m

$821

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 11/1

12:55 pm-11:45 pm

2 stops24h 50m

Bucharest Otopeni Intl

Sat 11/14

8:05 am-10:23 pm

2 stops24h 18m

$823

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 11/1

2:59 pm-11:45 pm

2 stops22h 46m

Bucharest Otopeni Intl

Sat 11/14

8:05 am-11:57 pm

2 stops25h 52m

$824

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 11/4

10:47 am-3:45 pm

2 stops18h 58m

Bucharest Otopeni Intl

Wed 11/18

8:05 am-10:23 pm

2 stops24h 18m

$825

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

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

Delta and United Airlines are the most popular carriers operating from Ontario to Bucharest

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 50% of people opting to fly with this airline when traveling to Bucharest. Keep in mind that there are 11 different airlines that fly to Bucharest on a routine basis, so you have a few additional options to choose from.

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

Fastest flight time	18h 08m
Direct flights	None

The fastest flight from Ontario to Bucharest takes 18h 08m

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 18h 08m.
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 May 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 9,692 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

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.

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Cheap flights from Ontario to Bucharest from $349

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 9/14. 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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How to get the cheapest flight ticket from Ontario 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

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

Fastest flight time

Direct flights

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

Fly your favorite airline to Bucharest

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.

Popular cities in Romania

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Ontario

According to popular flight searches on momondo this year

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