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Asuncion

$597+ Cheap flights from Ontario (ONT) to Asuncion (ASU)

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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — ASU
May 28 — Jun 41
Thu 5/28
Thu 6/4
1 adult, Economy
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Cheap flight deals from Ontario to Asuncion

Cheapest flights from Ontario to Asuncion
Explore the most affordable flight options available from Ontario to Asuncion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2026.

This Mytrip deal was found by Cheapflights users on 4/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:36 pm
ONT
-
ASU
3 stops27h 04m
Multiple Airlines
Fri 5/88:25 am
ASU
-
ONT
2 stops41h 20m
Multiple Airlines
Deal found 4/26$1,040
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/129:36 pm
ONT
-
ASU
2 stops27h 04m
Multiple Airlines
Sat 10/318:20 am
ASU
-
ONT
2 stops17h 35m
Multiple Airlines
Deal found 4/24$1,304
This Mytrip deal was found by Cheapflights users on 4/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2111:35 pm
ONT
-
ASU
2 stops49h 05m
Multiple Airlines
Wed 5/272:50 am
ASU
-
ONT
3 stops22h 55m
Multiple Airlines
Deal found 4/22$1,364
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/119:36 pm
ONT
-
ASU
3 stops28h 29m
Multiple Airlines
Mon 5/2510:25 pm
ASU
-
ONT
3 stops27h 20m
Multiple Airlines
Deal found 4/24$1,528
This Mytrip deal was found by Cheapflights users on 4/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/199:36 pm
ONT
-
ASU
3 stops28h 29m
Multiple Airlines
Fri 7/34:05 pm
ASU
-
ONT
3 stops33h 40m
Multiple Airlines
Deal found 4/25$1,622
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/79:36 pm
ONT
-
ASU
3 stops32h 59m
Multiple Airlines
Mon 7/132:50 am
ASU
-
ONT
3 stops24h 15m
Multiple Airlines
Deal found 4/24$1,652
This United Airlines deal was found by Cheapflights users on 4/26. 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 10/16:00 am
ONT
-
ASU
2 stops19h 31m
United Airlines
Mon 10/56:33 am
ASU
-
ONT
2 stops43h 25m
United Airlines
Deal found 4/26$1,781

Find flight deals from Ontario to Asuncion

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Asuncion (ASU). 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 April 28, 2026.

Most accurate provider

Expedia
1 star

Most trusted provider

Expedia
3 stars

Round-trip from

$1,153
(Mytrip)

One-way from

$597
(Avianca)

Popular in

December

Cheapest in

January

Average price

$905
Provider with most accurate pricing for Ontario-Asuncion Silvio Pettirossi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Asuncion Silvio Pettirossi flights.
Search Deals
From Ontario to Asuncion Silvio Pettirossi
Search Deals
One-way flight from Ontario to Asuncion Silvio Pettirossi
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Asuncion 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 April 28, 2026.
Use the filters below to find and compare flights from Ontario to Asuncion that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Mon 10/12

9:36 pm-4:40 am

2 stops27h 04m

Asuncion Silvio Pettirossi

Sat 10/31

8:20 am-9:55 pm

2 stops17h 35m

$1,304

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Thu 5/21

11:35 pm-4:40 am

2 stops49h 05m

Asuncion Silvio Pettirossi

Wed 5/27

2:50 am-9:45 pm

3 stops22h 55m

$1,364

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Mon 5/11

9:36 pm-6:05 am

3 stops28h 29m

Asuncion Silvio Pettirossi

Mon 5/25

10:25 pm-9:45 pm

3 stops27h 20m

$1,528

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Fri 6/19

9:36 pm-6:05 am

3 stops28h 29m

Asuncion Silvio Pettirossi

Fri 7/3

4:05 pm-9:45 pm

3 stops33h 40m

$1,622

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Tue 7/7

9:36 pm-10:35 am

3 stops32h 59m

Asuncion Silvio Pettirossi

Mon 7/13

2:50 am-11:05 pm

3 stops24h 15m

$1,652

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Thu 10/1

6:00 am-5:31 am

2 stops19h 31m

Asuncion Silvio Pettirossi

Mon 10/5

6:33 am-9:58 pm

2 stops43h 25m

$1,781
Cheapest one-way

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Tue 6/30

11:35 pm-4:40 am

2 stops49h 05m

$597

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Mon 6/22

9:36 pm-6:05 am

3 stops28h 29m

$660

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Mon 6/22

1:18 pm-5:24 am

2 stops36h 06m

$920

OntarioAsuncion

ONT - ASU

ONTASU

Ontario

Sun 6/28

9:36 pm-10:35 am

3 stops32h 59m

$932

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 16 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Ontario-Asuncion flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Ontario-Asuncion flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from Ontario-Asuncion flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Asuncion flights, Cheapflights users trust Expedia the most. Expedia 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-Asuncion 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 Asuncion

Have a flexible travel schedule? Discover the best time to fly to Asuncion 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.

Related info for your journey

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

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

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

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

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

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

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

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