Cheap flights from Ontario to Bucharest from $495
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 11/11. 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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Not ready to book? to track prices.Delta flights from Ontario to Bucharest Otopeni Intl Airport
Our best Delta deals on Ontario to Bucharest Otopeni Intl Airport flight tickets
United Airlines flights from Ontario to Bucharest Otopeni Intl Airport
Our best United Airlines deals on Ontario to Bucharest Otopeni Intl Airport flight tickets
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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
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Tue 11/3
6:20 am-2:10 pm
2 stops45h 50m
Bucharest Otopeni Intl
Wed 11/11
2:00 pm-12:17 pm
2 stops56h 17m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Tue 11/3
6:20 am-2:10 pm
2 stops45h 50m
Bucharest Otopeni Intl
Tue 11/17
2:00 pm-11:49 pm
2 stops43h 49m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Tue 11/3
6:20 am-2:10 pm
2 stops45h 50m
Bucharest Otopeni Intl
Thu 11/12
2:00 pm-12:17 pm
2 stops56h 17m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Tue 11/3
6:20 am-2:10 pm
2 stops45h 50m
Bucharest Otopeni Intl
Fri 11/13
6:00 am-12:17 pm
2 stops40h 17m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Wed 11/4
6:20 am-11:15 pm
2 stops30h 55m
Bucharest Otopeni Intl
Wed 11/11
2:00 pm-4:24 pm
2 stops36h 24m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Wed 11/4
6:20 am-11:15 pm
2 stops30h 55m
Bucharest Otopeni Intl
Fri 11/13
6:00 am-11:49 pm
2 stops27h 49m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Tue 11/3
6:00 pm-11:15 pm
2 stops43h 15m
Bucharest Otopeni Intl
Fri 11/13
6:00 am-12:17 pm
2 stops40h 17m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Tue 11/3
6:00 pm-11:15 pm
2 stops43h 15m
Bucharest Otopeni Intl
Thu 11/12
6:00 am-4:24 pm
2 stops20h 24m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Wed 11/4
5:00 am-11:55 pm
2 stops32h 55m
Bucharest Otopeni Intl
Tue 11/17
2:40 pm-12:29 pm
2 stops31h 49m
OntarioBucharest
ONT Ontario - OTP Bucharest Otopeni Intl
ONTOTP
Ontario
Wed 11/4
1:29 pm-11:55 pm
2 stops24h 26m
Bucharest Otopeni Intl
Fri 11/13
2:40 pm-12:29 pm
2 stops31h 49m
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 is the most popular carrier operating from Ontario to Bucharest Otopeni Intl
What airlines fly to Bucharest Otopeni Intl Airport?
Lufthansa, Turkish Airlines and British Airways 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 51% of people opting to fly with this airline when traveling to Bucharest Otopeni Intl Airport. Keep in mind that there are 10 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
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
Frequently asked questions about flying from Ontario to Bucharest Otopeni Intl Airport
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 21h 15m.
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?
As of October 2026, there is 1 operator available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Bucharest Otopeni Intl Airport is United Airlines (100% of total bookings).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $539 | Free Cancellation | Rating 7.4 10,324 reviews |
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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.