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Ontario

$686+ Cheap flights from Romania to Ontario (ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
OTP — ONT
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheap flight deals from Romania to Ontario

Keep the following information in mind while searching for Romania to Ontario flight deals. Data was last updated June 18, 2025.

Round-trip from

$807
(Delta)

One-way from

$686
(Air Serbia)

Popular in

July

Cheapest in

March

Average price

$827
From Romania to Ontario
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One-way flight from Romania to Ontario
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Highest demand for flights based on searches. 5% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Romania to Ontario

Cheapest flights from Romania to Ontario
Explore the most affordable flight options available from Romania to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.

This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:00 amOTP - ONT
2 stops26h 41mDelta
Tue 12/912:00 pmONT - OTP
2 stops23h 20mDelta
Deal found 6/18$807
This American Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/233:55 pmOTP - ONT
2 stops38h 16mAmerican Airlines
Wed 12/1010:57 amONT - OTP
2 stops23h 13mAmerican Airlines
Deal found 6/18$818
This KLM deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:00 amOTP - ONT
2 stops22h 06mKLM
Tue 12/911:29 amONT - OTP
2 stops17h 56mKLM
Deal found 6/18$824
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/275:55 amOTP - ONT
3 stops26h 50mUnited Airlines
Wed 12/106:42 pmONT - OTP
2 stops20h 23mUnited Airlines
Deal found 6/18$888
This Air Serbia deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Serbia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1512:50 pmOTP - ONT
2 stops42h 39mAir Serbia
Mon 9/2210:56 pmONT - OTP
2 stops31h 29mAir Serbia
Deal found 6/17$1,133
This Gotogate deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/88:25 amOTP - ONT
2 stops18h 11mBritish Airways
Mon 10/1312:51 pmONT - OTP
2 stops18h 34mBritish Airways
Deal found 6/17$1,426
This Qatar Airways deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:10 pmOTP - ONT
2 stops30h 09mQatar Airways
Thu 9/182:30 pmONT - OTP
2 stops31h 15mQatar Airways
Deal found 6/18$1,838
This Iberia deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/198:25 amOTP - ONT
2 stops24h 09mMultiple Airlines
Fri 8/12:40 pmONT - OTP
2 stops18h 25mMultiple Airlines
Deal found 6/17$4,440

Cheapflights Fare Finder

Customize your flight search to find flights from Romania to Ontario 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, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2025.
Use the filters below to find and compare flights from Romania to Ontario that are best for you.

Fly from

Romania

Fly to

Ontario

Route

Depart

Return

Price

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Tue 11/25

6:00 am-10:41 pm

2 stops26h 41m

Ontario

Tue 12/9

12:00 pm-9:20 pm

2 stops23h 20m

$807

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sun 11/23

3:55 pm-8:11 pm

2 stops38h 16m

Ontario

Wed 12/10

10:57 am-8:10 pm

2 stops23h 13m

$818

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 11/27

6:00 am-6:06 pm

2 stops22h 06m

Ontario

Tue 12/9

11:29 am-3:25 pm

2 stops17h 56m

$824

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 11/27

5:55 am-12:33 pm

2 stops40h 38m

Ontario

Thu 12/11

6:42 pm-1:05 am

2 stops20h 23m

$888

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Mon 9/15

12:50 pm-9:29 pm

2 stops42h 39m

Ontario

Mon 9/22

10:56 pm-4:25 pm

2 stops31h 29m

$1,133

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Wed 10/8

8:25 am-4:36 pm

2 stops18h 11m

Ontario

Mon 10/13

12:51 pm-5:25 pm

2 stops18h 34m

$1,426

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Wed 9/10

5:10 pm-1:19 pm

2 stops30h 09m

Ontario

Thu 9/18

2:30 pm-7:45 am

2 stops31h 15m

$1,838

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sat 7/19

8:25 am-10:34 pm

2 stops24h 09m

Ontario

Fri 8/1

2:40 pm-7:05 pm

2 stops18h 25m

$4,440

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Mon 10/6

12:50 pm-9:29 pm

2 stops42h 39m

$686

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Wed 7/16

9:30 am-4:19 pm

2 stops40h 49m

$743

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/18

Showing 1-10 of 13 results
1
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Best time to book a flight from Romania to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Romania with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Romania to Ontario

What is the cheapest month to book a flight from Romania to Ontario?

Currently, August is the cheapest month in which you can book a flight from Romania to Ontario (average of $246). Flying from Romania to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated June 18, 2025.
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,363 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Qatar Airways
7.4
Good
3,590 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,810 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,964 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Romania to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from Romania?

    For a flight from Romania to Ontario, you will be flying into Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • What are the cheapest airlines to fly from Romania to Ontario one-way?

    One-way options have recently been found by users for as low as $686 on Air Serbia. Other airlines that offer cheap prices include American Airlines from $814 and United Airlines from $909 one-way.

  • Can I find deals for flights from Romania to Ontario that include hotel bookings?

    Yes. In addition to deals on Romania to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Romania to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Romania to Ontario.

  • Can I find deals for business class flights from Romania to Ontario?

    Yes. Cheapflights offers flight deals from Romania to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Romania to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Romania to Ontario (average of $246). Flying from Romania to Ontario in March is currently the most expensive (average of $328). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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See prices for flight routes from nearby airports that may be better suited for you.
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