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$548+ Cheap flights from Austria to Ontario (ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
VIE — ONT
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Austria to Ontario

Keep the following information in mind while searching for Austria to Ontario flight deals. Data was last updated July 31, 2025.

Round-trip from

$548
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$901
From Austria to Ontario
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Austria to Ontario

Cheapest flights from Austria to Ontario
Explore the most affordable flight options available from Austria to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

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.
Tue 8/127:35 amVIE - ONT
2 stops35h 23mAmerican Airlines
Thu 9/41:10 pmONT - VIE
2 stops36h 40mAmerican Airlines
Deal found 7/30$548
This British Airways deal was found by Cheapflights users on 7/31. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:55 amVIE - ONT
2 stops18h 54mBritish Airways
Sun 11/24:47 pmONT - VIE
2 stops20h 43mBritish Airways
Deal found 7/31$577
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 9/1410:30 amVIE - ONT
2 stops34h 43mUnited Airlines
Sun 9/216:50 pmONT - VIE
2 stops28h 30mUnited Airlines
Deal found 7/31$682
This Air Canada deal was found by Cheapflights users on 7/31. 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 11/2010:35 amVIE - ONT
2 stops19h 09mMultiple Airlines
Thu 11/277:00 amONT - VIE
2 stops16h 45mMultiple Airlines
Deal found 7/31$695
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.
Fri 8/157:05 amVIE - ONT
2 stops18h 03mDelta
Wed 9/37:05 amONT - VIE
2 stops16h 30mDelta
Deal found 7/30$775
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.
Fri 8/1510:30 amVIE - ONT
2 stops35h 02mAir Canada
Thu 9/41:15 pmONT - VIE
2 stops34h 05mAir Canada
Deal found 7/30$963
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/510:35 amGRZ - ONT
2 stops19h 08mMultiple Airlines
Fri 9/127:00 amONT - GRZ
2 stops21h 55mMultiple Airlines
Deal found 7/30$1,021
This Iberia deal was found by Cheapflights users on 7/31. 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.
Mon 9/227:00 amVIE - ONT
2 stops20h 54mIberia
Mon 10/202:46 pmONT - VIE
2 stops19h 14mIberia
Deal found 7/31$1,027

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austria 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 July 31, 2025.
Use the filters below to find and compare flights from Austria to Ontario that are best for you.

Fly from

Austria

Fly to

Ontario

Route

Depart

Return

Price

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Tue 8/12

7:35 am-9:58 am

2 stops35h 23m

Ontario

Fri 9/5

1:10 pm-10:40 pm

2 stops24h 30m

$548

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Sun 10/26

10:55 am-9:49 pm

2 stops18h 54m

Ontario

Sun 11/2

4:47 pm-10:30 pm

2 stops20h 43m

$577

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Sun 9/14

10:30 am-12:13 pm

2 stops34h 43m

Ontario

Sun 9/21

6:50 pm-8:20 am

2 stops28h 30m

$682

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Thu 11/20

10:35 am-8:44 pm

2 stops19h 09m

Ontario

Thu 11/27

7:00 am-8:45 am

2 stops16h 45m

$695

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Fri 8/15

7:05 am-4:08 pm

2 stops18h 03m

Ontario

Wed 9/3

7:05 am-8:35 am

2 stops16h 30m

$775

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Fri 8/15

10:30 am-12:32 pm

2 stops35h 02m

Ontario

Thu 9/4

1:15 pm-8:20 am

2 stops34h 05m

$963

GrazOntario

GRZ - ONT

GRZONT

Graz Thalerhof

Fri 9/5

10:35 am-8:43 pm

2 stops19h 08m

Ontario

Fri 9/12

7:00 am-1:55 pm

2 stops21h 55m

$1,021

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Mon 9/22

7:00 am-6:54 pm

2 stops20h 54m

Ontario

Mon 10/20

2:46 pm-7:00 pm

2 stops19h 14m

$1,027

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Fri 9/12

7:45 am-10:33 pm

2 stops23h 48m

$759

ViennaOntario

VIE - ONT

VIEONT

Vienna Intl

Fri 9/5

7:45 am-6:16 pm

2 stops19h 31m

$760

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 17 results
1
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Best time to book a flight from Austria to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Austria to Ontario (average of $246). Flying from Austria 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.

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 July 31, 2025.
Peruse reviews from past customers who have flown with China Airlines, Delta, and United Airlines from Austria to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
754 reviews

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

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

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

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
7,981 reviews
China Airlines
8.3
Very good
754 reviews

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

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
8,900 reviews
China Airlines
8.3
Very good
754 reviews

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

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

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

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
9,851 reviews
China Airlines
8.3
Very good
754 reviews

Overall

8.3

Crew

8.5

Boarding

8.3

Entertainment

8.0

Comfort

8.0

Food

7.8

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 Austria 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 Austria?

    Ontario (ONT), located 3.1 mi from the city center, is the airport you fly into when you book flights from Austria to Ontario.

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

    The cheapest airlines for a one-way flight from Austria to Ontario are American Airlines ($759), British Airways ($760), and Iberia ($855).

  • What are the most popular routes from Austria to Ontario?

    The most popular flight routes from Austria to Ontario are Vienna Intl - Ontario, Graz Thalerhof - Ontario and Linz Hoersching - Ontario.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Austria to Ontario (average of $246). Flying from Austria 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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