Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Ontario to Bucharest from $391

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 11/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Bucharest

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:00 pm - 1:40 pm
ONT
-
OTP
29h 40m
2 stops
Delta Logo
2:00 pm - 5:21 pm
OTP
-
ONT
37h 21m
2 stops
$711Delta
Sun, Aug 16 - Tue, Aug 25
Delta Logo
6:20 am - 1:40 pm
ONT
-
OTP
21h 20m
2 stops
Delta Logo
7:05 am - 5:21 pm
OTP
-
ONT
20h 16m
2 stops
$718Delta
Tue, Aug 11 - Tue, Aug 25
United Airlines Logo
1:18 pm - 6:35 pm
ONT
-
OTP
19h 17m
2 stops
United Airlines Logo
6:15 am - 6:11 pm
OTP
-
ONT
21h 56m
2 stops
$722United Airlines
Mon, Aug 17 - Tue, Aug 25
United Airlines Logo
9:01 am - 4:30 pm
ONT
-
OTP
21h 29m
2 stops
United Airlines Logo
6:15 am - 8:53 pm
OTP
-
ONT
24h 38m
2 stops
$734United Airlines
Sun, Aug 16 - Tue, Aug 25
United Airlines Logo
9:01 am - 6:35 pm
ONT
-
OTP
23h 34m
2 stops
United Airlines Logo
1:50 pm - 8:01 pm
OTP
-
ONT
40h 11m
3 stops
$740United Airlines
Mon, Aug 17 - Mon, Aug 24
United Airlines Logo
1:18 pm - 6:35 pm
ONT
-
OTP
19h 17m
2 stops
United Airlines Logo
6:05 am - 5:41 pm
OTP
-
ONT
21h 36m
2 stops
$751United Airlines
Mon, Aug 17 - Tue, Oct 20
United Airlines Logo
6:46 am - 12:30 pm
ONT
-
OTP
19h 44m
2 stops
United Airlines Logo
7:10 pm - 6:29 pm
OTP
-
ONT
33h 19m
2 stops
$755United Airlines
Wed, Nov 4 - Wed, Nov 18
Multiple Airlines Logo
10:47 am - 2:45 pm
ONT
-
OTP
17h 58m
2 stops
Multiple Airlines Logo
8:20 am - 10:19 pm
OTP
-
ONT
23h 59m
2 stops
$758Multiple Airlines
Tue, Dec 1 - Tue, Dec 15
Multiple Airlines Logo
10:47 am - 3:45 pm
ONT
-
OTP
18h 58m
2 stops
Multiple Airlines Logo
8:25 am - 10:19 pm
OTP
-
ONT
23h 54m
2 stops
$759Multiple Airlines
Wed, Dec 2 - Wed, Dec 16
KLM Logo
1:06 pm - 3:25 pm
ONT
-
OTP
16h 19m
2 stops
KLM Logo
7:05 am - 5:21 pm
OTP
-
ONT
20h 16m
2 stops
$762KLM
Mon, Aug 3 - Wed, Aug 19

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

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 16
ONT9:10 pmOntario
25h 00m
2 stops
OTP8:10 amBucharest Otopeni Intl
Sep 29
OTP3:55 pmBucharest Otopeni Intl
38h 18m
2 stops
ONT8:13 pmOntario
$1,098
Turkish Airlines
Jul 20
ONT11:51 pmOntario
34h 24m
2 stops
OTP8:15 pmBucharest Otopeni Intl
Aug 4
OTP3:55 pmBucharest Otopeni Intl
40h 53m
2 stops
ONT10:48 pmOntario
$1,258
Turkish Airlines
Jul 20
ONT11:51 pmOntario
34h 24m
2 stops
OTP8:15 pmBucharest Otopeni Intl
Aug 3
OTP9:35 pmBucharest Otopeni Intl
59h 13m
2 stops
ONT10:48 pmOntario
$1,272

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
Aug 17
ONT1:18 pmOntario
19h 17m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Aug 25
OTP6:15 amBucharest Otopeni Intl
21h 56m
2 stops
ONT6:11 pmOntario
$722
United Airlines
Aug 16
ONT9:01 amOntario
21h 29m
2 stops
OTP4:30 pmBucharest Otopeni Intl
Aug 25
OTP6:15 amBucharest Otopeni Intl
24h 38m
2 stops
ONT8:53 pmOntario
$734
United Airlines
Aug 17
ONT9:01 amOntario
23h 34m
2 stops
OTP6:35 pmBucharest Otopeni Intl
Aug 24
OTP1:50 pmBucharest Otopeni Intl
40h 11m
3 stops
ONT8:01 pmOntario
$740

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 July 6, 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

Sun 8/16

10:00 pm-1:40 pm

2 stops29h 40m

Bucharest Otopeni Intl

Tue 8/25

2:00 pm-5:21 pm

2 stops37h 21m

$711

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 8/11

6:20 am-1:40 pm

2 stops21h 20m

Bucharest Otopeni Intl

Tue 8/25

7:05 am-5:21 pm

2 stops20h 16m

$718

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/17

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Tue 8/25

6:15 am-6:11 pm

2 stops21h 56m

$722

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Sun 8/16

9:01 am-4:30 pm

2 stops21h 29m

Bucharest Otopeni Intl

Tue 8/25

6:15 am-8:53 pm

2 stops24h 38m

$734

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/17

9:01 am-6:35 pm

2 stops23h 34m

Bucharest Otopeni Intl

Mon 8/24

1:50 pm-8:01 pm

3 stops40h 11m

$740

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/17

1:18 pm-6:35 pm

2 stops19h 17m

Bucharest Otopeni Intl

Tue 10/20

6:05 am-5:41 pm

2 stops21h 36m

$751

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 11/4

6:46 am-12:30 pm

2 stops19h 44m

Bucharest Otopeni Intl

Wed 11/18

7:10 pm-6:29 pm

2 stops33h 19m

$755

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Tue 12/1

10:47 am-2:45 pm

2 stops17h 58m

Bucharest Otopeni Intl

Tue 12/15

8:20 am-10:19 pm

2 stops23h 59m

$758

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Wed 12/2

10:47 am-3:45 pm

2 stops18h 58m

Bucharest Otopeni Intl

Wed 12/16

8:25 am-10:19 pm

2 stops23h 54m

$759
Quickest round-trip

OntarioBucharest

ONT - OTP

ONTOTP

Ontario

Mon 8/3

1:06 pm-3:25 pm

2 stops16h 19m

Bucharest Otopeni Intl

Wed 8/19

7:05 am-5:21 pm

2 stops20h 16m

$762

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
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?

British Airways and United Airlines are the most popular carriers 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 49% 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

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

17h 58m

Direct flights

None
The fastest flight from Ontario to Bucharest Otopeni Intl Airport takes 17h 58m
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

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 17h 58m.

  • 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 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.

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.

An easier way to manage your Bucharest Otopeni Intl Airport 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
Wed 8/5
Wed 8/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Bucharest