How long is the flight from Southeast Europe to Ontario?

Departing from Southeast Europe to Ontario will take you 23h 43m. Airlines will cover a distance of 6378 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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.

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).

What are the most popular routes from Southeast Europe to Ontario?

The most popular flight routes from Southeast Europe to Ontario are Athens Eleftherios V. - Ontario, Bucharest Otopeni Intl - Ontario and Belgrade Nikola Tesla - Ontario.

What is the cheapest time of day to fly from YMH to ONT?

When flying from Southeast Europe to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly into for flights to Ontario from Southeast Europe?

Ontario (ONT) is the airport you will fly into if you book a flight from Southeast Europe to Ontario. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

Can I find deals for flights from Southeast Europe to Ontario that include hotel bookings?

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

How can I find direct flights from Southeast Europe to Ontario?

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

Can I find deals for business class flights from Southeast Europe to Ontario?

Yes. Cheapflights offers flight deals from Southeast Europe 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.

$587+ Flights from Southeast Europe to Ontario

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Southeast Europe to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Southeast Europe to Ontario

Cheapest flights from Southeast Europe to Ontario
Explore the most affordable flight options available from Southeast Europe to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

Sun 12/212:25 pmSOF - ONT

2 stops53h 36mUnited Airlines

Sun 1/116:00 amONT - SOF

2 stops30h 45mUnited Airlines

Deal found 12/21

$1,176

Wed 12/246:15 amATH - ONT

2 stops26h 10mUnited Airlines

Tue 12/3011:59 pmONT - ATH

2 stops26h 41mUnited Airlines

Deal found 12/21

$1,188

Wed 12/248:20 pmATH - ONT

2 stops31h 58mAmerican Airlines

Wed 12/3110:47 amONT - ATH

2 stops18h 28mAmerican Airlines

Deal found 12/21

$1,259

Wed 12/243:55 pmATH - ONT

2 stops29h 58mIberia

Thu 1/16:10 amONT - ATH

2 stops32h 25mIberia

Deal found 12/21

$1,458

Fri 12/263:55 pmATH - ONT

2 stops30h 01mIberia

Thu 1/16:10 amONT - ATH

2 stops23h 05mIberia

Deal found 12/21

$1,575

Tue 12/2310:15 amBEG - ONT

2 stops20h 59mMultiple Airlines

Tue 1/2710:58 amONT - BEG

2 stops21h 07mMultiple Airlines

Deal found 12/21

$1,606

Wed 12/313:55 pmATH - ONT

2 stops29h 58mIberia

Wed 1/1410:58 amONT - ATH

2 stops18h 17mIberia

Deal found 12/21

$2,113

Sun 12/2110:15 amBEG - ONT

2 stops20h 59mMultiple Airlines

Thu 1/2910:58 amONT - BEG

2 stops21h 07mMultiple Airlines

Deal found 12/21

$2,697

Best flights from Southeast Europe to Ontario
Discover carefully curated flight deals from Southeast Europe to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 23, 2025.

Sat 1/248:05 amOTP - ONT

2 stops24h 43mAmerican Airlines

Thu 1/2911:59 pmONT - OTP

2 stops29h 11mAmerican Airlines

Deal found 12/21

$796

Fri 1/238:00 amOTP - ONT

2 stops24h 13mBritish Airways

Sun 1/253:09 pmONT - OTP

2 stops18h 26mBritish Airways

Deal found 12/21

$799

Thu 4/306:00 amATH - ONT

2 stops26h 37mDelta

Wed 5/202:00 pmONT - ATH

2 stops22h 55mDelta

Deal found 12/23

$861

Wed 4/229:10 amATH - ONT

1 stop19h 18mKLM

Wed 4/297:00 amONT - ATH

1 stop18h 00mKLM

Deal found 12/22

$875

Wed 2/46:15 amBEG - ONT

2 stops23h 43mUnited Airlines

Wed 2/116:00 amONT - BEG

2 stops21h 50mUnited Airlines

Deal found 12/21

$913

Tue 1/136:25 amATH - ONT

3 stops24h 33mAir Canada

Thu 1/225:05 amONT - ATH

3 stops22h 10mAir Canada

Deal found 12/21

$1,052

Fri 1/1610:15 amBEG - ONT

2 stops20h 58mMultiple Airlines

Wed 9/3012:47 pmONT - BEG

2 stops19h 28mMultiple Airlines

Deal found 12/23

$1,338

Sat 1/248:05 amOTP - ONT

2 stops24h 43mAmerican Airlines

Tue 1/2710:58 amONT - OTP

2 stops25h 57mAmerican Airlines

Deal found 12/21

$796

Thu 1/228:00 amOTP - ONT

2 stops24h 13mBritish Airways

Sat 1/243:09 pmONT - OTP

2 stops46h 36mBritish Airways

Deal found 12/21

$799

Mon 1/194:00 pmOTP - ONT

2 stops40h 48mBritish Airways

Fri 1/306:00 amONT - OTP

2 stops23h 10mBritish Airways

Deal found 12/21

$799

Sat 4/186:20 amSOF - ONT

2 stops21h 27mUnited Airlines

Tue 5/51:40 pmONT - SOF

2 stops23h 30mUnited Airlines

Deal found 12/21

$929

Thu 3/57:50 pmATH - ONT

2 stops32h 49mAmerican Airlines

Mon 3/97:00 amONT - ATH

2 stops23h 50mAmerican Airlines

Deal found 12/20

$851

Mon 1/194:00 pmOTP - ONT

2 stops40h 48mBritish Airways

Sun 1/253:09 pmONT - OTP

2 stops22h 36mBritish Airways

Deal found 12/21

$799

Thu 2/1212:30 pmSOF - ONT

2 stops35h 24mQatar Airways

Wed 2/2512:02 pmONT - SOF

2 stops37h 23mQatar Airways

Deal found 12/21

$2,006

Fri 2/62:35 pmSOF - ONT

2 stops18h 18mUnited Airlines

Thu 2/191:45 pmONT - SOF

2 stops18h 15mUnited Airlines

Deal found 12/22

$930

Tue 1/208:00 amOTP - ONT

2 stops40h 18mBritish Airways

Fri 1/307:16 amONT - OTP

2 stops21h 54mBritish Airways

Deal found 12/21

$799

Mon 4/66:05 amZAG - ONT

2 stops20h 42mUnited Airlines

Sat 4/251:34 pmONT - ZAG

2 stops15h 41mUnited Airlines

Deal found 12/22

$935

Tue 1/208:00 amOTP - ONT

2 stops40h 18mBritish Airways

Tue 1/276:00 amONT - OTP

2 stops22h 45mBritish Airways

Deal found 12/21

$799

Tue 1/132:00 pmSOF - ONT

2 stops18h 53mUnited Airlines

Tue 1/201:53 pmONT - SOF

2 stops22h 52mUnited Airlines

Deal found 12/22

$942

Fri 1/234:45 pmOTP - ONT

2 stops40h 03mBritish Airways

Wed 1/2810:58 amONT - OTP

2 stops23h 02mBritish Airways

Deal found 12/21

$799

Tue 4/75:35 amZAG - ONT

2 stops21h 27mUnited Airlines

Sat 4/251:34 pmONT - ZAG

2 stops15h 41mUnited Airlines

Deal found 12/22

$946

Thu 1/224:35 pmOTP - ONT

2 stops39h 38mBritish Airways

Mon 1/264:45 pmONT - OTP

2 stops20h 15mBritish Airways

Deal found 12/21

$799

Wed 4/85:55 amZAG - ONT

2 stops20h 52mUnited Airlines

Sat 4/251:34 pmONT - ZAG

2 stops15h 41mUnited Airlines

Deal found 12/22

$946

Thu 1/228:00 amOTP - ONT

2 stops24h 13mBritish Airways

Sun 1/2511:59 pmONT - OTP

2 stops29h 31mBritish Airways

Deal found 12/21

$799

Thu 4/1612:35 pmATH - ONT

1 stop19h 51mUnited Airlines

Tue 4/217:00 amONT - ATH

1 stop17h 35mUnited Airlines

Deal found 12/22

$961

Fri 1/238:00 amOTP - ONT

2 stops24h 13mBritish Airways

Thu 1/2911:59 pmONT - OTP

2 stops29h 11mBritish Airways

Deal found 12/21

$799

Mon 1/126:35 amATH - ONT

2 stops21h 08mUnited Airlines

Wed 1/218:00 amONT - ATH

2 stops22h 35mUnited Airlines

Deal found 12/21

$968

Mon 2/27:45 amATH - ONT

2 stops25h 03mBritish Airways

Sun 2/84:45 pmONT - ATH

2 stops22h 35mBritish Airways

Deal found 12/21

$853

Mon 2/27:45 amATH - ONT

2 stops25h 03mBritish Airways

Mon 2/94:45 pmONT - ATH

2 stops20h 25mBritish Airways

Deal found 12/21

$853

Thu 2/512:35 pmSJJ - ONT

2 stops42h 23mUnited Airlines

Thu 2/126:00 amONT - SJJ

2 stops20h 55mUnited Airlines

Deal found 12/22

$1,082

Last-minute flights from Southeast Europe to Ontario
Discover last-minute flight deals from Southeast Europe to Ontario. Data last updated December 23, 2025 and is based on user searches.

Mon 1/126:35 amATH - ONT

2 stops21h 08mUnited Airlines

Wed 1/218:00 amONT - ATH

2 stops22h 35mUnited Airlines

Deal found 12/21

$968

Tue 1/132:00 pmSOF - ONT

2 stops18h 53mUnited Airlines

Tue 1/201:53 pmONT - SOF

2 stops22h 52mUnited Airlines

Deal found 12/22

$942

Tue 1/136:25 amATH - ONT

3 stops24h 33mAir Canada

Thu 1/225:05 amONT - ATH

3 stops22h 10mAir Canada

Deal found 12/21

$1,052

Mon 1/194:00 pmOTP - ONT

2 stops40h 48mBritish Airways

Mon 1/266:00 amONT - OTP

2 stops23h 30mBritish Airways

Deal found 12/21

$799

Tue 1/205:55 amOTP - ONT

3 stops39h 23mUnited Airlines

Thu 1/295:05 amONT - OTP

2 stops23h 00mUnited Airlines

Deal found 12/21

$880

Tue 1/205:55 amOTP - ONT

3 stops39h 23mUnited Airlines

Tue 1/276:00 amONT - OTP

2 stops21h 55mUnited Airlines

Deal found 12/21

$915

Fri 1/236:15 amBEG - ONT

2 stops25h 38mUnited Airlines

Sat 4/251:34 pmONT - BEG

2 stops17h 11mUnited Airlines

Deal found 12/20

$913

Fri 1/236:00 amOTP - ONT

2 stops20h 15mDelta

Sat 1/2410:30 pmONT - OTP

2 stops27h 35mDelta

Deal found 12/21

$928

Fri 1/238:00 amOTP - ONT

2 stops22h 10mBritish Airways

Thu 2/53:09 pmONT - OTP

2 stops18h 21mBritish Airways

Deal found 12/22

$957

Fri 1/238:00 amOTP - ONT

2 stops24h 48mMultiple Airlines

Thu 2/510:58 amONT - OTP

2 stops18h 47mMultiple Airlines

Deal found 12/22

$1,172

Sat 1/248:05 amOTP - ONT

2 stops24h 43mAmerican Airlines

Thu 1/2911:59 pmONT - OTP

2 stops29h 11mAmerican Airlines

Deal found 12/21

$796

Sun 1/257:35 amOTP - ONT

2 stops25h 13mAmerican Airlines

Wed 1/283:09 pmONT - OTP

2 stops18h 51mAmerican Airlines

Deal found 12/21

$1,148

One-way flights from Southeast Europe to Ontario
Search for one-way flight options from Southeast Europe to Ontario. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.

Wed 2/119:00 pmSOF - ONT

2 stops36h 58mMultiple Airlines

Deal found 12/22

$587

Wed 4/221:00 pmATH - ONT

2 stops29h 31mMultiple Airlines

Deal found 12/22

$607

Thu 5/217:40 pmDBV - ONT

2 stops30h 56mBritish Airways

Deal found 12/21

$656

Sat 5/168:35 pmATH - ONT

2 stops31h 11mBritish Airways

Deal found 12/21

$663

Fri 4/179:55 amDBV - ONT

2 stops40h 50mMultiple Airlines

Deal found 12/21

$730

Sun 6/2110:45 amZAG - ONT

2 stops22h 09mBritish Airways

Deal found 12/22

$747

Thu 5/2811:10 amZAG - ONT

2 stops21h 22mIberia

Deal found 12/21

$783

Thu 1/227:30 amATH - ONT

2 stops25h 18mMultiple Airlines

Deal found 12/22

$861

Fri 1/161:50 pmBEG - ONT

2 stops37h 01mUnited Airlines

Deal found 12/23

$863

Sat 5/169:10 amATH - ONT

1 stop19h 05mKLM

Deal found 12/21

$925

Fri 4/36:30 amDBV - ONT

2 stops18h 59mKLM

Deal found 12/22

$940

Tue 1/64:00 pmSOF - ONT

2 stops57h 08mMultiple Airlines

Deal found 12/20

$1,062

Find flight deals from Southeast Europe to Ontario

Round-trip from	$796 (American Airlines)
One-way from	$587 (Iberia)

From Southeast Europe to Ontario

Search Deals

One-way flight from Southeast Europe to Ontario

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southeast Europe to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sat 1/24

8:05 am-10:48 pm

2 stops24h 43m

Ontario

Thu 1/29

11:59 pm-3:10 pm

2 stops29h 11m

$796

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Sat 1/24

8:05 am-10:48 pm

2 stops24h 43m

Ontario

Tue 1/27

10:58 am-10:55 pm

2 stops25h 57m

$796

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Fri 1/23

8:00 am-10:13 pm

2 stops24h 13m

Ontario

Sun 1/25

3:09 pm-7:35 pm

2 stops18h 26m

$799

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 1/22

8:00 am-10:13 pm

2 stops24h 13m

Ontario

Sat 1/24

3:09 pm-11:45 pm

2 stops46h 36m

$799

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Mon 1/19

4:00 pm-10:48 pm

2 stops40h 48m

Ontario

Fri 1/30

6:00 am-3:10 pm

2 stops23h 10m

$799

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Mon 1/19

4:00 pm-10:48 pm

2 stops40h 48m

Ontario

Sun 1/25

3:09 pm-11:45 pm

2 stops22h 36m

$799

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Tue 1/20

8:00 am-2:18 pm

2 stops40h 18m

Ontario

Fri 1/30

7:16 am-3:10 pm

2 stops21h 54m

$799

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Tue 1/20

8:00 am-2:18 pm

2 stops40h 18m

Ontario

Tue 1/27

6:00 am-2:45 pm

2 stops22h 45m

$799

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Fri 1/23

4:45 pm-10:48 pm

2 stops40h 03m

Ontario

Wed 1/28

10:58 am-8:00 pm

2 stops23h 02m

$799

BucharestOntario

OTP - ONT

OTPONT

Bucharest Otopeni Intl

Thu 1/22

4:35 pm-10:13 pm

2 stops39h 38m

Ontario

Mon 1/26

4:45 pm-11:00 pm

2 stops20h 15m

$799

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 53 results

...

Best time to book a flight from Southeast Europe to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Southeast Europe 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 Southeast Europe to Ontario

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

Currently, June is the cheapest month in which you can book a flight from Southeast Europe to Ontario (average of $368). Flying from Southeast Europe to Ontario in May is currently the most expensive (average of $717). 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.

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown United Airlines from Southeast Europe to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,105 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

United Airlines

7.4

Good

9,105 reviews

United Airlines

7.4

Good

9,105 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

What airport do you fly into for flights to Ontario from Southeast Europe?
Ontario (ONT) is the airport you will fly into if you book a flight from Southeast Europe to Ontario. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.
How long is the flight from Southeast Europe to Ontario?
Departing from Southeast Europe to Ontario will take you 23h 43m. Airlines will cover a distance of 6378 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the most popular routes from Southeast Europe to Ontario?
The most popular flight routes from Southeast Europe to Ontario are Athens Eleftherios V. - Ontario, Bucharest Otopeni Intl - Ontario and Belgrade Nikola Tesla - Ontario.
Can I find deals for flights from Southeast Europe to Ontario that include hotel bookings?
Yes. In addition to deals on Southeast Europe to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Southeast Europe to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Southeast Europe to Ontario.
Can I find deals for business class flights from Southeast Europe to Ontario?
Yes. Cheapflights offers flight deals from Southeast Europe 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 Southeast Europe to Ontario?
Currently, June is the cheapest month in which you can book a flight from Southeast Europe to Ontario (average of $368). Flying from Southeast Europe to Ontario in May is currently the most expensive (average of $717). 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Southeast Europe to Ontario

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$913	Average$1,037	FlexibilityNo cancel fee	On-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$587+ Cheap flights from Southeast Europe 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Southeast Europe to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Southeast Europe to Ontario

Cheapest flights from Southeast Europe to OntarioExplore the most affordable flight options available from Southeast Europe to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

Explore the most affordable flight options available from Southeast Europe to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.

Find flight deals from Southeast Europe to Ontario

Keep the following information in mind while searching for Southeast Europe to Ontario flight deals. Data was last updated December 23, 2025.

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Southeast Europe to Ontario that are best for you.

Best time to book a flight from Southeast Europe to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Southeast Europe with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Southeast Europe to Ontario

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

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown United Airlines from Southeast Europe to Ontario. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Southeast Europe 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 Southeast Europe?

How long is the flight from Southeast Europe to Ontario?

What are the most popular routes from Southeast Europe to Ontario?

Can I find deals for flights from Southeast Europe to Ontario that include hotel bookings?

How can I find direct flights from Southeast Europe to Ontario?

Can I find deals for business class flights from Southeast Europe to Ontario?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southeast Europe to Ontario

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

Top airline flying from Southeast Europe to Ontario

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Southeast Europe to Ontario
Explore the most affordable flight options available from Southeast Europe to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 23, 2025.