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$494+ Cheap flights from Ontario (ONT) to Vienna (VIE)

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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — VIE
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Ontario to Vienna

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Vienna (VIE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 30, 2025.

Round-trip from

$648
(United Airlines)

One-way from

$494
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$952
From Ontario to Vienna Intl
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One-way flight from Ontario to Vienna Intl
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Highest demand for flights based on searches. 2% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Ontario to Vienna

Cheapest flights from Ontario to Vienna
Explore the most affordable flight options available from Ontario to Vienna. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This United Airlines deal was found by Cheapflights users on 7/29. 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.
Wed 11/197:00 amONT - VIE
1 stop16h 05mUnited Airlines
Tue 11/2510:35 amVIE - ONT
2 stops34h 58mUnited Airlines
Deal found 7/29$648
This Iberia deal was found by Cheapflights users on 7/30. 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.
Fri 12/1210:57 amONT - VIE
2 stops26h 58mIberia
Wed 3/187:05 amVIE - ONT
2 stops22h 57mIberia
Deal found 7/30$849
This Ovago deal was found by Cheapflights users on 7/30. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/232:59 pmONT - VIE
2 stops22h 31mBritish Airways
Sat 11/297:25 pmVIE - ONT
2 stops35h 34mBritish Airways
Deal found 7/30$880
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Mon 12/155:09 pmONT - VIE
2 stops20h 26mAmerican Airlines
Mon 3/97:45 pmVIE - ONT
2 stops21h 44mAmerican Airlines
Deal found 7/30$898
This oojo deal was found by Cheapflights users on 7/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:00 amONT - VIE
2 stops25h 05mCondor
Wed 10/227:40 amVIE - ONT
2 stops25h 23mCondor
Deal found 7/30$931
This Air Canada deal was found by Cheapflights users on 7/30. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:00 amONT - VIE
2 stops17h 35mMultiple Airlines
Thu 12/1110:35 amVIE - ONT
2 stops19h 07mMultiple Airlines
Deal found 7/30$940
This Delta deal was found by Cheapflights users on 7/30. 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.
Mon 12/2211:56 amONT - VIE
2 stops19h 19mDelta
Thu 1/16:50 amVIE - ONT
2 stops21h 48mDelta
Deal found 7/30$1,142

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Vienna 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 July 30, 2025.
Use the filters below to find and compare flights from Ontario to Vienna that are best for you.

Fly from

Ontario

Fly to

Vienna

Route

Depart

Return

Price

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Wed 11/19

7:00 am-8:05 am

1 stop16h 05m

Vienna Intl

Tue 11/25

10:35 am-12:33 pm

2 stops34h 58m

$648

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Wed 1/14

5:40 am-8:35 am

2 stops17h 55m

Vienna Intl

Thu 1/22

10:35 am-8:17 pm

2 stops18h 42m

$656

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Fri 12/12

10:57 am-10:55 pm

2 stops26h 58m

Vienna Intl

Wed 3/18

7:05 am-10:02 pm

2 stops22h 57m

$849

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Sun 11/23

2:59 pm-10:30 pm

2 stops22h 31m

Vienna Intl

Sat 11/29

7:25 pm-9:59 pm

2 stops35h 34m

$880

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Mon 12/15

5:09 pm-10:35 pm

2 stops20h 26m

Vienna Intl

Mon 3/9

7:45 pm-9:29 am

2 stops21h 44m

$898

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Thu 1/15

7:00 am-8:45 am

2 stops16h 45m

Vienna Intl

Thu 1/22

10:35 am-8:17 pm

2 stops18h 42m

$930

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Wed 10/15

6:00 am-4:05 pm

2 stops25h 05m

Vienna Intl

Wed 10/22

7:40 am-12:03 am

2 stops25h 23m

$931

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Mon 12/22

11:56 am-4:15 pm

2 stops19h 19m

Vienna Intl

Thu 1/1

6:50 am-7:38 pm

2 stops21h 48m

$1,142

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Sun 8/24

7:00 am-8:20 am

1 stop16h 20m

$494

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Mon 1/5

11:00 am-6:30 pm

2 stops22h 30m

$503

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 13 results
1
2

Best time to book a flight from Ontario to Vienna

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

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

Currently, October is the cheapest month in which you can book a flight from Ontario to Vienna (average of $737). Flying from Ontario to Vienna in June is currently the most expensive (average of $1,232). 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 Vienna

Get insights into the airlines that provide service to Vienna. 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 Vienna. Reviews last updated July 30, 2025.
Get a feel of what it's like to fly with China Airlines, Delta, and United Airlines from Ontario to Vienna by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
754 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
China Airlines
8.3
Very good
754 reviews
China Airlines
8.3
Very good
754 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Delta
8.0
Very good
7,980 reviews
China Airlines
8.3
Very good
754 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
United Airlines
7.4
Good
8,896 reviews
China Airlines
8.3
Very good
754 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
American Airlines
7.2
Good
10,000 reviews
China Airlines
8.3
Very good
754 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.
Air Canada
7.1
Good
9,837 reviews
China Airlines
8.3
Very good
754 reviews

Boarding

8.3

Entertainment

8.0

Food

7.8

Comfort

8.0

Crew

8.5

Overall

8.3

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

SFO - TPE

Bad News - The flight was delayed and it was due to ground crew issues but the staff were moving things along. The seat size was cramp and i am a lean person. The attendant kept asking me in Chinese when i already stated i don’t speak the language. The food was bad. The taste, aroma, consistent of mush. Even a cafeteria lady can cook better food. Kudos - the pilot made up for lost time to the best of his ability. He made sure that the flight was smooth even though there was occasional turbulence. The landing was great.

Related info for your journey

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

  • What are the cheapest airlines flying from Ontario to Vienna round-trip?

    Cheapflights users have booked flights from Ontario to Vienna round-trip from $648. Other airlines that can offer you cheap pricing are Air Canada, from $656, and Iberia, from $849.

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

    The cheapest airlines for a one-way flight from Ontario to Vienna are United Airlines ($494), British Airways ($577), and Iberia ($592).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Vienna 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 Ontario to Vienna?

    Currently, October is the cheapest month in which you can book a flight from Ontario to Vienna (average of $737). Flying from Ontario to Vienna in June is currently the most expensive (average of $1,232). 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

Traveling to a place near Vienna?

Book flights to Vienna if you plan to visit one of these locations
Amstetten
Melk

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