Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Ontario to Bucharest from $383

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 1/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Bucharest

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:05 am - 2:00 pm
ONT
-
OTP
22h 55m2 stops
United Airlines Logo
6:05 am - 8:58 pm
OTP
-
ONT
24h 53m2 stops
$514United Airlines
Wed, Jan 21 - Wed, Feb 4
British Airways Logo
5:02 pm - 2:30 pm
ONT
-
OTP
35h 28m2 stops
British Airways Logo
8:25 am - 9:56 pm
OTP
-
ONT
23h 31m2 stops
$523British Airways
Wed, Apr 1 - Thu, Apr 30
British Airways Logo
5:02 pm - 2:45 pm
ONT
-
OTP
36h 43m2 stops
British Airways Logo
3:30 pm - 5:46 pm
OTP
-
ONT
60h 16m2 stops
$528British Airways
Mon, Mar 23 - Mon, Apr 6
United Airlines Logo
1:53 pm - 11:50 pm
ONT
-
OTP
23h 57m2 stops
United Airlines Logo
2:50 pm - 10:53 pm
OTP
-
ONT
18h 03m2 stops
$539United Airlines
Fri, Jan 23 - Fri, Feb 6
Multiple Airlines Logo
6:00 am - 8:10 pm
ONT
-
OTP
28h 10m2 stops
Multiple Airlines Logo
6:00 am - 9:05 pm
OTP
-
ONT
25h 05m2 stops
$549Multiple Airlines
Thu, Feb 5 - Mon, Feb 9
United Airlines Logo
6:00 am - 2:05 pm
ONT
-
OTP
22h 05m3 stops
United Airlines Logo
5:55 am - 5:43 pm
OTP
-
ONT
21h 48m2 stops
$563United Airlines
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
5:02 pm - 1:25 am
ONT
-
OTP
22h 23m2 stops
British Airways Logo
8:25 am - 9:56 pm
OTP
-
ONT
23h 31m2 stops
$573British Airways
Thu, Apr 23 - Thu, May 7
British Airways Logo
4:45 pm - 10:55 pm
ONT
-
OTP
20h 10m2 stops
British Airways Logo
8:00 am - 10:48 pm
OTP
-
ONT
24h 48m2 stops
$583British Airways
Tue, Jan 20 - Tue, Feb 3
United Airlines Logo
6:00 am - 2:05 pm
ONT
-
OTP
22h 05m3 stops
United Airlines Logo
5:55 am - 5:43 pm
OTP
-
ONT
21h 48m3 stops
$598United Airlines
Thu, Feb 5 - Mon, Feb 9
British Airways Logo
12:55 pm - 12:45 am
ONT
-
OTP
25h 50m2 stops
British Airways Logo
8:20 am - 5:46 pm
OTP
-
ONT
43h 26m2 stops
$608British Airways
Sun, Apr 19 - Sun, May 3

United Airlines flights from Ontario to Bucharest

Our best United Airlines deals on Ontario to Bucharest flight tickets
United Airlines
Jan 21
ONT5:05 amOntario
22h 55m
2 stops
OTP2:00 pmBucharest Otopeni Intl
Feb 4
OTP6:05 amBucharest Otopeni Intl
24h 53m
2 stops
ONT8:58 pmOntario
$514
Find similar
United Airlines
Jan 23
ONT1:53 pmOntario
23h 57m
2 stops
OTP11:50 pmBucharest Otopeni Intl
Feb 6
OTP2:50 pmBucharest Otopeni Intl
18h 03m
2 stops
ONT10:53 pmOntario
$539
Find similar
United Airlines
Feb 5
ONT6:00 amOntario
22h 05m
3 stops
OTP2:05 pmBucharest Otopeni Intl
Feb 9
OTP5:55 amBucharest Otopeni Intl
21h 48m
2 stops
ONT5:43 pmOntario
$563
Find similar

British Airways flights from Ontario to Bucharest

Our best British Airways deals on Ontario to Bucharest flight tickets
British Airways
Apr 1
ONT5:02 pmOntario
35h 28m
2 stops
OTP2:30 pmBucharest Otopeni Intl
Apr 30
OTP8:25 amBucharest Otopeni Intl
23h 31m
2 stops
ONT9:56 pmOntario
$523
Find similar
British Airways
Mar 23
ONT5:02 pmOntario
36h 43m
2 stops
OTP2:45 pmBucharest Otopeni Intl
Apr 6
OTP3:30 pmBucharest Otopeni Intl
60h 16m
2 stops
ONT5:46 pmOntario
$528
Find similar
British Airways
Apr 23
ONT5:02 pmOntario
22h 23m
2 stops
OTP1:25 amBucharest Otopeni Intl
May 7
OTP8:25 amBucharest Otopeni Intl
23h 31m
2 stops
ONT9:56 pmOntario
$573
Find similar

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 December 20, 2025.
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

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 1/21

5:05 am-2:00 pm

2 stops22h 55m

Bucharest Otopeni Intl

Wed 2/4

6:05 am-8:58 pm

2 stops24h 53m

$514

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 4/1

5:02 pm-2:30 pm

2 stops35h 28m

Bucharest Otopeni Intl

Thu 4/30

8:25 am-9:56 pm

2 stops23h 31m

$523

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 3/23

5:02 pm-2:45 pm

2 stops36h 43m

Bucharest Otopeni Intl

Mon 4/6

3:30 pm-5:46 pm

2 stops60h 16m

$528

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Fri 1/23

1:53 pm-11:50 pm

2 stops23h 57m

Bucharest Otopeni Intl

Fri 2/6

2:50 pm-10:53 pm

2 stops18h 03m

$539

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 2/5

6:00 am-8:10 pm

2 stops28h 10m

Bucharest Otopeni Intl

Mon 2/9

6:00 am-9:05 pm

2 stops25h 05m

$549

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 2/5

6:00 am-2:05 pm

3 stops22h 05m

Bucharest Otopeni Intl

Mon 2/9

5:55 am-5:43 pm

2 stops21h 48m

$563

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 4/23

5:02 pm-1:25 am

2 stops22h 23m

Bucharest Otopeni Intl

Thu 5/7

8:25 am-9:56 pm

2 stops23h 31m

$573

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 1/20

4:45 pm-10:55 pm

2 stops20h 10m

Bucharest Otopeni Intl

Tue 2/3

8:00 am-10:48 pm

2 stops24h 48m

$583

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Thu 2/5

6:00 am-2:05 pm

3 stops22h 05m

Bucharest Otopeni Intl

Mon 2/9

5:55 am-5:43 pm

3 stops21h 48m

$598

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 4/19

12:55 pm-12:45 am

2 stops25h 50m

Bucharest Otopeni Intl

Sun 5/3

8:20 am-5:46 pm

2 stops43h 26m

$608

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 day to depart on your flight to Bucharest?

Our data shows that Sunday is the least expensive day to fly to Bucharest. Tickets to fly out on this day can be as low as $682. The most expensive day to fly to Bucharest is Saturday, with ticket prices averaging around $821.

What is the cheapest time of day to depart on your flight to Bucharest?

According to our data, the cheapest time of day to fly to Bucharest is in the morning. momondo users have found flights departing from Ontario to Bucharest in the morning for as low as $689. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Bucharest is in the afternoon when prices are around $771.

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 31m

Direct flights

None
The fastest flight from Ontario to Bucharest takes 18h 31m
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 18h 31m.

  • 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 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.

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

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 1/19
Mon 1/26
By creating a price alert you accept our terms of use and privacy policy.

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