HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Vienna

$519+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — VIE
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Vienna 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 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 January 27, 2026.

This oojo deal was found by Cheapflights users on 1/26. 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.
Sat 6/61:10 pm
ONT
-
VIE
2 stops35h 55m
British Airways
Wed 6/244:50 pm
VIE
-
ONT
2 stops38h 01m
British Airways
Deal found 1/26$743
This oojo deal was found by Cheapflights users on 1/26. 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 3/182:39 pm
ONT
-
VIE
2 stops17h 31m
British Airways
Wed 4/111:35 am
VIE
-
ONT
2 stops43h 55m
British Airways
Deal found 1/26$892
This oojo deal was found by Cheapflights users on 1/27. 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.
Tue 3/2410:56 am
ONT
-
VIE
2 stops18h 54m
British Airways
Mon 3/3011:35 am
VIE
-
ONT
2 stops40h 07m
British Airways
Deal found 1/27$893
This oojo deal was found by Cheapflights users on 1/27. 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.
Mon 3/235:02 pm
ONT
-
VIE
2 stops21h 33m
British Airways
Mon 3/309:15 pm
VIE
-
ONT
2 stops31h 30m
British Airways
Deal found 1/27$903
This oojo deal was found by Cheapflights users on 1/27. 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.
Tue 4/2812:19 pm
ONT
-
VIE
2 stops18h 41m
British Airways
Tue 5/127:30 am
VIE
-
ONT
2 stops19h 54m
British Airways
Deal found 1/27$905
This United Airlines deal was found by Cheapflights users on 1/26. 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 4/305:00 am
ONT
-
VIE
2 stops21h 55m
United Airlines
Thu 5/1410:30 am
VIE
-
ONT
1 stop21h 00m
United Airlines
Deal found 1/26$953
This oojo deal was found by Cheapflights users on 1/27. 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.
Thu 3/195:02 pm
ONT
-
VIE
2 stops17h 28m
British Airways
Thu 4/27:40 am
VIE
-
ONT
2 stops22h 44m
British Airways
Deal found 1/27$955
This British Airways deal was found by Cheapflights users on 1/26. 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.
Sat 6/69:12 am
ONT
-
VIE
2 stops39h 53m
British Airways
Thu 6/257:40 am
VIE
-
ONT
2 stops23h 11m
British Airways
Deal found 1/26$960
This oojo deal was found by Cheapflights users on 1/26. 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 4/292:08 pm
ONT
-
VIE
2 stops20h 22m
British Airways
Wed 5/1311:35 am
VIE
-
ONT
2 stops40h 02m
British Airways
Deal found 1/26$967
This United Airlines deal was found by Cheapflights users on 1/27. 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 4/165:10 am
ONT
-
VIE
2 stops21h 45m
United Airlines
Sat 4/2510:30 am
VIE
-
ONT
1 stop20h 56m
United Airlines
Deal found 1/27$1,003
This Air Canada deal was found by Cheapflights users on 1/27. 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 4/167:00 am
ONT
-
VIE
2 stops16h 20m
Multiple Airlines
Sat 4/2510:30 am
VIE
-
ONT
2 stops19h 06m
Multiple Airlines
Deal found 1/27$1,020

Find 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$743
(oojo)

One-way from

$519
(KAYAK)

Popular in

June

Cheapest in

November

Average price

$734
Provider with most accurate pricing for Ontario-Vienna Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Vienna Intl flights.
Search Deals
From Ontario to Vienna Intl
Search Deals
One-way flight from Ontario to Vienna Intl
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($207 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 27, 2026.
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

Mon 3/23

5:02 pm-10:35 pm

2 stops21h 33m

Vienna Intl

Mon 3/30

11:35 am-6:42 pm

2 stops40h 07m

$892

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Tue 3/24

10:56 am-1:50 pm

2 stops18h 54m

Vienna Intl

Mon 3/30

11:35 am-6:42 pm

2 stops40h 07m

$893

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Sat 6/6

9:12 am-10:05 am

2 stops39h 53m

Vienna Intl

Thu 6/25

7:40 am-9:51 pm

2 stops23h 11m

$960

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Sat 6/6

1:10 pm-10:05 am

2 stops35h 55m

Vienna Intl

Thu 6/18

7:40 am-9:51 pm

2 stops23h 11m

$960

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Thu 4/30

5:00 am-11:55 am

2 stops21h 55m

Vienna Intl

Thu 5/14

10:30 am-10:30 pm

2 stops21h 00m

$961

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Thu 4/16

7:00 am-8:15 am

1 stop16h 15m

Vienna Intl

Sat 4/25

10:30 am-10:26 pm

1 stop20h 56m

$1,003

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Wed 4/29

5:10 am-8:20 am

2 stops18h 10m

Vienna Intl

Tue 9/29

10:30 am-12:20 pm

2 stops34h 50m

$1,041

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Mon 3/2

5:02 pm-10:35 pm

2 stops20h 33m

Vienna Intl

Mon 3/9

9:15 pm-10:07 pm

2 stops32h 52m

$1,153

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Sat 3/21

10:56 am-3:45 pm

2 stops20h 49m

Vienna Intl

Sat 4/4

6:55 am-10:07 pm

2 stops24h 12m

$1,158

OntarioVienna

ONT - VIE

ONTVIE

Ontario

Fri 2/27

10:56 am-1:25 pm

2 stops17h 29m

Vienna Intl

Fri 3/13

11:30 am-11:59 pm

2 stops20h 29m

$1,203

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 24 results
1
2
3
  • Most accurate provider: When it comes to deals on Ontario-Vienna flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Vienna flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Vienna flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Vienna flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Vienna flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 $407). Flying from Ontario to Vienna in June is currently the most expensive (average of $806). 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.

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.

  • How long is the flight from Ontario to Vienna?

    British Airways and United Airlines can get you from Ontario to Vienna in just under 21h 33m. Your travel time can differ by up to 22m. Ontario and Vienna are separated by a distance of 6089 mi. This flight may include one or multiple stops.

  • 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 $407). Flying from Ontario to Vienna in June is currently the most expensive (average of $806). 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

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 Ontario to Vienna

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Vienna flights
San Francisco to Vienna flights
San Jose to Vienna flights
Santa Ana to Vienna flights
Las Vegas to Vienna flights
San Diego to Vienna flights
San Francisco to Salzburg flights
San Diego to Salzburg flights
Los Angeles to Salzburg flights
Oakland to Vienna flights
Los Angeles to Innsbruck flights
Reno to Vienna flights
Sacramento to Vienna flights
Burbank to Vienna flights
San Francisco to Innsbruck flights
San Francisco to Graz flights
Santa Barbara to Vienna flights
Medford to Vienna flights
Los Angeles to Graz flights
Monterey to Vienna flights
San Jose to Innsbruck flights
Santa Ana to Innsbruck flights
San Jose to Graz flights
Sacramento to Salzburg flights
Santa Ana to Salzburg flights
Santa Rosa to Vienna flights
Las Vegas to Innsbruck flights
Sacramento to Innsbruck flights
Los Angeles to Linz flights
Los Angeles to Klagenfurt flights
Oakland to Innsbruck flights
San Francisco to Linz flights
Oakland to Salzburg flights
San Luis Obispo to Vienna flights
San Luis Obispo to Salzburg flights
Las Vegas to Graz flights
San Jose to Salzburg flights
Monterey to Innsbruck flights

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.