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Cheap flights from Ontario to Bucharest from $341

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 9/2. 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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0 bags

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Find the cheapest flights from Ontario to Bucharest

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:05 am - 6:35 pm
ONT
-
OTP
21h 30m
2 stops
United Airlines Logo
1:50 pm - 10:59 pm
OTP
-
ONT
19h 09m
2 stops
$671United Airlines
Tue, Apr 21 - Tue, May 5
United Airlines Logo
1:34 pm - 6:35 pm
ONT
-
OTP
19h 01m
2 stops
United Airlines Logo
6:05 am - 5:56 pm
OTP
-
ONT
21h 51m
2 stops
$701United Airlines
Tue, Apr 14 - Tue, Jun 9
United Airlines Logo
1:18 pm - 4:20 pm
ONT
-
OTP
17h 02m
2 stops
United Airlines Logo
6:05 am - 6:11 pm
OTP
-
ONT
22h 06m
2 stops
$733United Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
9:50 am - 3:50 pm
ONT
-
OTP
20h 00m
2 stops
Multiple Airlines Logo
8:35 am - 10:34 pm
OTP
-
ONT
23h 59m
2 stops
$749Multiple Airlines
Mon, May 11 - Thu, May 21
United Airlines Logo
10:37 am - 6:35 pm
ONT
-
OTP
21h 58m
2 stops
United Airlines Logo
1:45 pm - 10:59 pm
OTP
-
ONT
19h 14m
2 stops
$751United Airlines
Thu, May 7 - Thu, May 14
United Airlines Logo
6:30 am - 12:00 pm
ONT
-
OTP
19h 30m
2 stops
United Airlines Logo
6:05 am - 6:19 pm
OTP
-
ONT
22h 14m
2 stops
$752United Airlines
Thu, Aug 6 - Thu, Sep 10
United Airlines Logo
1:18 pm - 4:20 pm
ONT
-
OTP
17h 02m
2 stops
United Airlines Logo
6:05 am - 6:11 pm
OTP
-
ONT
22h 06m
2 stops
$756United Airlines
Wed, Sep 9 - Fri, Sep 18
United Airlines Logo
11:05 am - 6:35 pm
ONT
-
OTP
21h 30m
2 stops
United Airlines Logo
12:45 pm - 10:45 pm
OTP
-
ONT
20h 00m
2 stops
$771United Airlines
Sun, Apr 19 - Sun, Apr 26
United Airlines Logo
10:37 am - 4:30 pm
ONT
-
OTP
19h 53m
2 stops
United Airlines Logo
6:05 am - 8:04 pm
OTP
-
ONT
23h 59m
2 stops
$773United Airlines
Sun, May 10 - Sun, May 24
United Airlines Logo
1:18 pm - 4:20 pm
ONT
-
OTP
17h 02m
2 stops
United Airlines Logo
1:50 pm - 10:58 pm
OTP
-
ONT
19h 08m
2 stops
$774United Airlines
Mon, Aug 17 - Mon, Aug 31

United Airlines flights from Ontario to Bucharest

Our best United Airlines deals on Ontario to Bucharest flight tickets
United Airlines
Apr 21
ONT11:05 amOntario
21h 30m
2 stops
OTP6:35 pmBucharest Otopeni Intl
May 5
OTP1:50 pmBucharest Otopeni Intl
19h 09m
2 stops
ONT10:59 pmOntario
$671
United Airlines
Apr 14
ONT1:34 pmOntario
19h 01m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Jun 9
OTP6:05 amBucharest Otopeni Intl
21h 51m
2 stops
ONT5:56 pmOntario
$701
United Airlines
Aug 17
ONT1:18 pmOntario
17h 02m
2 stops
OTP4:20 pmBucharest Otopeni Intl
Aug 24
OTP6:05 amBucharest Otopeni Intl
22h 06m
2 stops
ONT6:11 pmOntario
$733

British Airways flights from Ontario to Bucharest

Our best British Airways deals on Ontario to Bucharest flight tickets
British Airways
May 1
ONT12:19 pmOntario
25h 31m
2 stops
OTP11:50 pmBucharest Otopeni Intl
May 6
OTP8:15 amBucharest Otopeni Intl
24h 21m
2 stops
ONT10:36 pmOntario
$799
British Airways
Apr 22
ONT4:52 pmOntario
21h 28m
2 stops
OTP12:20 amBucharest Otopeni Intl
May 6
OTP8:15 amBucharest Otopeni Intl
24h 21m
2 stops
ONT10:36 pmOntario
$800
British Airways
Sep 12
ONT4:59 pmOntario
35h 06m
2 stops
OTP2:05 pmBucharest Otopeni Intl
Sep 23
OTP4:15 pmBucharest Otopeni Intl
59h 33m
2 stops
ONT5:48 pmOntario
$825

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Bucharest 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, momondo users made 832,500 searches. Data last updated March 22, 2026.
Use the filters below to find and compare flights from Ontario to Bucharest that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 4/21

11:05 am-6:35 pm

2 stops21h 30m

Bucharest Otopeni Intl

Tue 5/5

1:50 pm-10:59 pm

2 stops19h 09m

$671

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 4/14

1:34 pm-6:35 pm

2 stops19h 01m

Bucharest Otopeni Intl

Tue 6/9

6:05 am-5:56 pm

2 stops21h 51m

$701

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/17

1:18 pm-4:20 pm

2 stops17h 02m

Bucharest Otopeni Intl

Mon 8/24

6:05 am-6:11 pm

2 stops22h 06m

$733

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 5/11

9:50 am-3:50 pm

2 stops20h 00m

Bucharest Otopeni Intl

Thu 5/21

8:35 am-10:34 pm

2 stops23h 59m

$749

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 5/7

10:37 am-6:35 pm

2 stops21h 58m

Bucharest Otopeni Intl

Thu 5/14

1:45 pm-10:59 pm

2 stops19h 14m

$751

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 8/6

6:30 am-12:00 pm

2 stops19h 30m

Bucharest Otopeni Intl

Thu 9/10

6:05 am-6:19 pm

2 stops22h 14m

$752

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 9/9

1:18 pm-4:20 pm

2 stops17h 02m

Bucharest Otopeni Intl

Fri 9/18

6:05 am-6:11 pm

2 stops22h 06m

$756

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 4/19

11:05 am-6:35 pm

2 stops21h 30m

Bucharest Otopeni Intl

Sun 4/26

12:45 pm-10:45 pm

2 stops20h 00m

$771

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 5/10

10:37 am-4:30 pm

2 stops19h 53m

Bucharest Otopeni Intl

Sun 5/24

6:05 am-8:04 pm

2 stops23h 59m

$773
Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/17

1:18 pm-4:20 pm

2 stops17h 02m

Bucharest Otopeni Intl

Mon 8/31

1:50 pm-10:58 pm

2 stops19h 08m

$774

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Bucharest from

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?

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

What airlines fly to Bucharest?

Lufthansa, British Airways and Turkish Airlines 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 12 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

17h 02m

Direct flights

None
The fastest flight from Ontario to Bucharest takes 17h 02m
There are no direct flights from Ontario to Bucharest. There are no popular flight routes from Ontario to Bucharest.
Search flight deals

  • 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 17h 02m.

  • 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?

  • 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 AirlinesPriceFrom $539Free CancellationRating
7.4
9,455 reviews
Search United Airlines flights

Traveling to a place near Bucharest?

Book flights to Bucharest if you plan to visit one of these locations
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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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
Bucharest Otopeni Intl Airport