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Cheap flights from Ontario to Bucharest from $354

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.
1 adult
1 adult, Economy, 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
1:34 pm - 6:35 pm
ONT
-
OTP
19h 01m
2 stops
United Airlines Logo
1:50 pm - 10:59 pm
OTP
-
ONT
19h 09m
2 stops
$715United Airlines
ב', אפר' 27 - ג', מאי 5
United Airlines Logo
1:34 pm - 6:35 pm
ONT
-
OTP
19h 01m
2 stops
United Airlines Logo
1:55 pm - 5:52 pm
OTP
-
ONT
37h 57m
2 stops
$741United Airlines
א', אפר' 26 - ש', מאי 2
United Airlines Logo
1:30 pm - 1:10 am
ONT
-
OTP
25h 40m
2 stops
United Airlines Logo
6:05 am - 10:35 pm
OTP
-
ONT
26h 30m
2 stops
$752United Airlines
ו', מאי 8 - ו', מאי 15
United Airlines Logo
1:18 pm - 4:20 pm
ONT
-
OTP
17h 02m
2 stops
United Airlines Logo
12:45 pm - 10:26 pm
OTP
-
ONT
19h 41m
2 stops
$765United Airlines
ג', ספט' 1 - ד', ספט' 30
United Airlines Logo
10:49 am - 6:35 pm
ONT
-
OTP
21h 46m
2 stops
United Airlines Logo
6:05 am - 6:01 pm
OTP
-
ONT
21h 56m
2 stops
$771United Airlines
ש', אפר' 25 - ש', מאי 9
United Airlines Logo
6:59 pm - 6:35 pm
ONT
-
OTP
37h 36m
2 stops
United Airlines Logo
6:55 pm - 10:46 pm
OTP
-
ONT
37h 51m
2 stops
$772United Airlines
ו', מאי 8 - ב', מאי 25
United Airlines Logo
11:05 am - 4:30 pm
ONT
-
OTP
19h 25m
2 stops
United Airlines Logo
2:05 pm - 10:59 pm
OTP
-
ONT
18h 54m
2 stops
$783United Airlines
א', אפר' 26 - א', מאי 10
Turkish Airlines Logo
11:59 pm - 8:15 pm
ONT
-
OTP
34h 16m
2 stops
Turkish Airlines Logo
3:55 pm - 9:29 pm
OTP
-
ONT
39h 34m
2 stops
$790Turkish Airlines
ב', ספט' 7 - ב', ספט' 21
Turkish Airlines Logo
10:56 pm - 12:05 pm
ONT
-
OTP
27h 09m
2 stops
Turkish Airlines Logo
9:35 pm - 9:29 pm
OTP
-
ONT
33h 54m
2 stops
$792Turkish Airlines
ה', ספט' 24 - ה', אוק' 8
British Airways Logo
4:59 pm - 12:20 am
ONT
-
OTP
21h 21m
2 stops
British Airways Logo
8:05 am - 9:59 pm
OTP
-
ONT
23h 54m
2 stops
$800British Airways
ד', ספט' 23 - ד', נוב' 18

Turkish Airlines flights from Ontario to Bucharest Otopeni Intl Airport

Our best Turkish Airlines deals on Ontario to Bucharest Otopeni Intl Airport flight tickets
Turkish Airlines
Sep 7
ONT11:59 pmOntario
34h 16m
2 stops
OTP8:15 pmBucharest Otopeni Intl
Sep 21
OTP3:55 pmBucharest Otopeni Intl
39h 34m
2 stops
ONT9:29 pmOntario
$790
Turkish Airlines
Sep 25
ONT10:56 pmOntario
29h 39m
2 stops
OTP2:35 pmBucharest Otopeni Intl
Oct 9
OTP9:35 pmBucharest Otopeni Intl
33h 54m
2 stops
ONT9:29 pmOntario
$791
Turkish Airlines
Sep 24
ONT10:56 pmOntario
27h 09m
2 stops
OTP12:05 pmBucharest Otopeni Intl
Oct 8
OTP9:35 pmBucharest Otopeni Intl
33h 54m
2 stops
ONT9:29 pmOntario
$792

United Airlines flights from Ontario to Bucharest Otopeni Intl Airport

Our best United Airlines deals on Ontario to Bucharest Otopeni Intl Airport flight tickets
United Airlines
Apr 27
ONT1:34 pmOntario
19h 01m
2 stops
OTP6:35 pmBucharest Otopeni Intl
May 5
OTP1:50 pmBucharest Otopeni Intl
19h 09m
2 stops
ONT10:59 pmOntario
$715
United Airlines
Apr 29
ONT11:05 amOntario
21h 30m
2 stops
OTP6:35 pmBucharest Otopeni Intl
May 13
OTP12:45 pmBucharest Otopeni Intl
20h 14m
2 stops
ONT10:59 pmOntario
$723
United Airlines
May 8
ONT1:30 pmOntario
25h 40m
2 stops
OTP1:10 amBucharest Otopeni Intl
May 15
OTP6:05 amBucharest Otopeni Intl
26h 30m
2 stops
ONT10:35 pmOntario
$752

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Bucharest Otopeni Intl Airport 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 מרץ 29, 2026.
Use the filters below to find and compare flights from Ontario to Bucharest Otopeni Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

ב' 4/27

1:34 pm-6:35 pm

2 stops19h 01m

Bucharest Otopeni Intl

ג' 5/5

1:50 pm-10:59 pm

2 stops19h 09m

$715

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

א' 4/26

1:34 pm-6:35 pm

2 stops19h 01m

Bucharest Otopeni Intl

ש' 5/2

1:55 pm-5:52 pm

2 stops37h 57m

$741

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

ו' 5/8

1:30 pm-1:10 am

2 stops25h 40m

Bucharest Otopeni Intl

ו' 5/15

6:05 am-10:35 pm

2 stops26h 30m

$752
Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

ג' 9/1

1:18 pm-4:20 pm

2 stops17h 02m

Bucharest Otopeni Intl

ד' 9/30

12:45 pm-10:26 pm

2 stops19h 41m

$765

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

ש' 4/25

10:49 am-6:35 pm

2 stops21h 46m

Bucharest Otopeni Intl

ש' 5/9

6:05 am-6:01 pm

2 stops21h 56m

$771

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

ו' 5/8

6:59 pm-6:35 pm

2 stops37h 36m

Bucharest Otopeni Intl

ב' 5/25

6:55 pm-10:46 pm

2 stops37h 51m

$772

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

א' 4/26

11:05 am-4:30 pm

2 stops19h 25m

Bucharest Otopeni Intl

א' 5/10

2:05 pm-10:59 pm

2 stops18h 54m

$783

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

ב' 9/7

11:59 pm-8:15 pm

2 stops34h 16m

Bucharest Otopeni Intl

ב' 9/21

3:55 pm-9:29 pm

2 stops39h 34m

$790

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

ה' 9/24

10:56 pm-12:05 pm

2 stops27h 09m

Bucharest Otopeni Intl

ה' 10/8

9:35 pm-9:29 pm

2 stops33h 54m

$792

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

ד' 9/23

4:59 pm-12:20 am

2 stops21h 21m

Bucharest Otopeni Intl

ד' 11/18

8:05 am-9:59 pm

2 stops23h 54m

$800

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

See travel insights to Bucharest from

How to get the cheapest flight ticket from Ontario to Bucharest Otopeni Intl Airport

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 Otopeni Intl?

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

What airlines fly to Bucharest Otopeni Intl Airport?

Lufthansa, British Airways and Turkish Airlines are the top three most popular airlines that fly to Bucharest Otopeni Intl Airport from Ontario according to our data. Lufthansa is the first choice among our users, with 52% of people opting to fly with this airline when traveling to Bucharest Otopeni Intl Airport. Keep in mind that there are 12 different airlines that fly to Bucharest Otopeni Intl Airport on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Bucharest Otopeni Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Bucharest Otopeni Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Bucharest Otopeni Intl Airport (ONT to OTP) flight deals and tips

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

Fastest flight time

18h 43m

Direct flights

None
The fastest flight from Ontario to Bucharest Otopeni Intl Airport takes 18h 43m
There are no direct flights from Ontario to Bucharest Otopeni Intl Airport. There are no popular flight routes from Ontario to Bucharest Otopeni Intl Airport.
Search flight deals

  • How far is Ontario to Bucharest Otopeni Intl by plane?

    Ontario and Bucharest Otopeni Intl are 6542.2 mi apart from one another. By plane, this route typically takes 18h 43m.

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

    Prices for flights from Ontario Airport to Bucharest Otopeni Intl Airport are updated daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Bucharest Otopeni Intl Airport.

  • What documentation or ID do you need to fly to Bucharest Otopeni Intl Airport?

    The necessary travel and health documents for your Bucharest Otopeni Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Bucharest Otopeni Intl Airport?

Best airlines flying from Ontario to Bucharest Otopeni Intl Airport

Compare and see reviews for airlines that fly from Ontario to Bucharest Otopeni Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $539Free CancellationRating
7.4
9,509 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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Bucharest. momondo saves you time and could save you money on your trip.

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

Flights from Ontario to Bucharest with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Ontario and Bucharest by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Bucharest, momondo offers a useful price alert feature which will track prices for flights to Bucharest from Ontario and alert you when they change.

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1 adult
ג' 4/28
ג' 5/5
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