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Cheap flights from Ontario (ONT) to Asuncion (ASU) from $343

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — ASU
May 9 — May 161
From?
To?
Thu 5/9
Thu 5/16
1 adult, Economy
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How far in advance should I book a flight from Ontario to Asuncion?

Travelers have found it’s best to book a flight 9 days in advance to save up to 145% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 9 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Ontario to Asuncion 1-2 weeks in advance for as low as $434, or $1,123 for flights within the next 24 hours.

What is the cheapest month to fly from Ontario to Asuncion?

September is one of the best times of the year to fly to Asuncion from Ontario. Prices for September average $938 per person but you can even find prices for as low as $617. The most expensive prices can be found in the month of December. Opting for a September flight can save you 40% on your journey compared to booking in December

When is the cheapest time to fly from Ontario to Asuncion (ONT - ASU)?

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

Cheap American Airlines flights from Ontario to Asuncion

Explore cheap flight options specifically provided by American Airlines for the route between Ontario and Asuncion. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 4, 2024.
Peruse some of the lowest-priced American Airlines flights we've found from Ontario to Asuncion. Be sure to come back soon if the deals available don't appeal to you at this time.
Sun 10/138:41 amONT - ASU
2 stops22h 54mAmerican Airlines
Sat 11/25:45 pmASU - ONT
3 stops29h 07mAmerican Airlines
Deal found 5/3$1,653
Sun 10/1310:50 amONT - ASU
2 stops20h 45mAmerican Airlines
Sat 11/25:45 pmASU - ONT
2 stops29h 03mAmerican Airlines
Deal found 5/3$1,698
Sun 10/139:50 amONT - ASU
3 stops21h 45mAmerican Airlines
Sat 11/25:45 pmASU - ONT
3 stops22h 52mAmerican Airlines
Deal found 5/3$1,803
Sat 8/316:10 amONT - ASU
2 stops25h 25mAmerican Airlines
Sat 9/144:40 pmASU - ONT
2 stops19h 56mAmerican Airlines
Deal found 5/3$2,062
Sat 6/112:50 pmONT - ASU
2 stops18h 45mAmerican Airlines
Sat 6/84:50 pmASU - ONT
2 stops20h 13mAmerican Airlines
Deal found 5/2$3,489

Cheap United Airlines flights from Ontario to Asuncion

Explore cheap flight options specifically provided by United Airlines for the route between Ontario and Asuncion. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 4, 2024.
Some of the best deals we've found on United Airlines flights traveling from Ontario to Asuncion. Make sure to examine the flight information before completing your reservation.
Sun 10/137:18 amONT - ASU
3 stops42h 21mUnited Airlines
Fri 11/11:50 amASU - ONT
2 stops23h 31mUnited Airlines
Deal found 5/3$1,727
Sun 10/137:18 amONT - ASU
3 stops42h 21mUnited Airlines
Fri 11/11:50 amASU - ONT
3 stops48h 31mUnited Airlines
Deal found 5/3$4,770

Cheap Ontario to Asuncion flights in May & June 2024

Find cheap flight options from Ontario to Asuncion specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Prices were last updated on May 4, 2024.
The lowest fares we've come across on flights traveling from Ontario to Asuncion in May and June 2024. Check back regularly for other flight deals.
Sat 6/111:30 pmONT - ASU
3 stops32h 05mMultiple Airlines
Sat 6/85:40 amASU - ONT
2 stops19h 20mMultiple Airlines
Deal found 5/2$1,652
Sat 6/112:50 pmONT - ASU
2 stops18h 45mAmerican Airlines
Sat 6/84:50 pmASU - ONT
2 stops20h 13mAmerican Airlines
Deal found 5/2$3,489

Ontario to Asuncion 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Asuncion in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 4, 2024.
The lowest fares we've come across on flights traveling from Ontario to Asuncion in May and June 2024. Check back regularly for other flight deals.
Sun 10/136:02 amONT - ASU
2 stops43h 33mMultiple Airlines
Fri 11/11:50 amASU - ONT
2 stops23h 31mMultiple Airlines
Deal found 5/3$1,342
Sun 10/1311:30 pmONT - ASU
2 stops26h 09mMultiple Airlines
Sat 11/26:42 amASU - ONT
2 stops19h 58mMultiple Airlines
Deal found 5/3$1,511
Sat 6/111:30 pmONT - ASU
3 stops32h 05mMultiple Airlines
Sat 6/85:40 amASU - ONT
2 stops19h 20mMultiple Airlines
Deal found 5/2$1,652
Sun 10/138:41 amONT - ASU
2 stops22h 54mAmerican Airlines
Sat 11/25:45 pmASU - ONT
3 stops29h 07mAmerican Airlines
Deal found 5/3$1,653
Sun 10/1310:50 amONT - ASU
2 stops20h 45mAmerican Airlines
Sat 11/25:45 pmASU - ONT
2 stops29h 03mAmerican Airlines
Deal found 5/3$1,698
Sun 10/137:18 amONT - ASU
3 stops42h 21mUnited Airlines
Fri 11/11:50 amASU - ONT
2 stops23h 31mUnited Airlines
Deal found 5/3$1,727
Sun 10/139:50 amONT - ASU
3 stops21h 45mAmerican Airlines
Sat 11/25:45 pmASU - ONT
3 stops22h 52mAmerican Airlines
Deal found 5/3$1,803
Sat 8/316:10 amONT - ASU
2 stops25h 25mAmerican Airlines
Sat 9/144:40 pmASU - ONT
2 stops19h 56mAmerican Airlines
Deal found 5/3$2,062
Sat 6/112:50 pmONT - ASU
2 stops18h 45mAmerican Airlines
Sat 6/84:50 pmASU - ONT
2 stops20h 13mAmerican Airlines
Deal found 5/2$3,489

One-way flights to Asuncion from Ontario

Search for one-way flight options from Ontario to Asuncion. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 4, 2024.
Take a look at some of the best available options we've come across on one-way flights from Ontario to Asuncion. Users needing a return flight from Ontario to Asuncion should utilize the search form above.
Sun 9/811:30 pmONT - ASU
2 stops26h 05mAvianca
Deal found 5/3$343
Mon 7/2911:30 pmONT - ASU
2 stops26h 05mAvianca
Deal found 5/3$552
Fri 5/2412:58 amONT - ASU
3 stops42h 57mMultiple Airlines
Deal found 5/3$655
Mon 9/96:00 amONT - ASU
2 stops20h 12mUnited Airlines
Deal found 5/3$699
Mon 7/291:30 pmONT - ASU
3 stops31h 22mUnited Airlines
Deal found 5/3$964
Sat 9/712:45 pmONT - ASU
2 stops18h 50mAmerican Airlines
Deal found 5/3$1,217
Fri 9/611:59 pmONT - ASU
2 stops31h 36mAmerican Airlines
Deal found 5/3$1,243
Thu 9/58:41 amONT - ASU
2 stops22h 54mAmerican Airlines
Deal found 5/3$1,327
Sat 5/256:00 amONT - ASU
2 stops25h 35mAmerican Airlines
Deal found 5/3$1,500

Find flights from Ontario to Asuncion within your budget

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 2,864,334 searches. Data last updated May 4, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$1,342 - $3,489

Route

Depart

Return

Price

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sun 10/13

2 stops43h 33m

Asuncion Silvio Pettirossi

Fri 11/1

2 stops23h 31m

$1,342

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sun 10/13

2 stops26h 09m

Asuncion Silvio Pettirossi

Sat 11/2

2 stops19h 58m

$1,511

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sat 6/1

3 stops32h 05m

Asuncion Silvio Pettirossi

Sat 6/8

2 stops19h 20m

$1,652

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sun 10/13

2 stops22h 54m

Asuncion Silvio Pettirossi

Sat 11/2

3 stops29h 07m

$1,653

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sun 10/13

2 stops20h 45m

Asuncion Silvio Pettirossi

Sat 11/2

2 stops29h 03m

$1,698

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sun 10/13

3 stops42h 21m

Asuncion Silvio Pettirossi

Fri 11/1

2 stops23h 31m

$1,727

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sun 10/13

3 stops21h 45m

Asuncion Silvio Pettirossi

Sat 11/2

3 stops22h 52m

$1,803

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sat 8/31

2 stops25h 25m

Asuncion Silvio Pettirossi

Sat 9/14

2 stops19h 56m

$2,062

OntarioAsuncion Silvio Pettirossi

ONT - ASU

ONTASU

Ontario

Sat 6/1

2 stops18h 45m

Asuncion Silvio Pettirossi

Sat 6/8

2 stops20h 13m

$3,489

Flights are sorted by cheapest first

Deals found on 5/3

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Asuncion

Get insights into the airlines that provide service to Asuncion. 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 Asuncion. Reviews last updated May 4, 2024.
Peruse reviews from past customers who have flown with American Airlines and United Airlines from Ontario to Asuncion to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Avianca
7.5
Good
3,867 reviews
Check prices

Food

6.4

Boarding

7.7

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

7.9

Reviews

1 / 10

Although I was assured twice by United that Avianca was their travel partner and that I would not be charged for my bags at LAX and even though my bags were checked through to San Salvador, we were charged $275 for our bags before being allowed to board. We have had a family tragedy while here and haven't had the time to call United yet. The gate attendant and her supervisor were completely unsympathetic and told me they didn't care what United said refused to at least charge us the online fee instead of the airport fee. Worst experience I have ever had with an airline.

Avianca
7.5
Good
3,867 reviews
Avianca
7.5
Good
3,867 reviews
Check prices

Food

6.4

Boarding

7.7

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

7.9

Reviews

1 / 10

Although I was assured twice by United that Avianca was their travel partner and that I would not be charged for my bags at LAX and even though my bags were checked through to San Salvador, we were charged $275 for our bags before being allowed to board. We have had a family tragedy while here and haven't had the time to call United yet. The gate attendant and her supervisor were completely unsympathetic and told me they didn't care what United said refused to at least charge us the online fee instead of the airport fee. Worst experience I have ever had with an airline.

United Airlines
7.4
Good
11,134 reviews
Avianca
7.5
Good
3,867 reviews
Check prices

Food

6.4

Boarding

7.7

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

7.9

Reviews

1 / 10

Although I was assured twice by United that Avianca was their travel partner and that I would not be charged for my bags at LAX and even though my bags were checked through to San Salvador, we were charged $275 for our bags before being allowed to board. We have had a family tragedy while here and haven't had the time to call United yet. The gate attendant and her supervisor were completely unsympathetic and told me they didn't care what United said refused to at least charge us the online fee instead of the airport fee. Worst experience I have ever had with an airline.

American Airlines
7.3
Good
14,755 reviews
Avianca
7.5
Good
3,867 reviews
Check prices

Food

6.4

Boarding

7.7

Entertainment

6.8

Overall

7.5

Comfort

7.4

Crew

7.9

Reviews

1 / 10

Although I was assured twice by United that Avianca was their travel partner and that I would not be charged for my bags at LAX and even though my bags were checked through to San Salvador, we were charged $275 for our bags before being allowed to board. We have had a family tragedy while here and haven't had the time to call United yet. The gate attendant and her supervisor were completely unsympathetic and told me they didn't care what United said refused to at least charge us the online fee instead of the airport fee. Worst experience I have ever had with an airline.

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 flights from Ontario to Asuncion for under $1,400 on Cheapflights?

    Yes, there are multiple flights from Ontario to Asuncion for under $1,400. The cheapest flight booked recently is on Multiple Airlines for just $1,342, but on average you can expect to pay $2,170.

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

    The cheapest airline one-way is Avianca, with whom users have recently found tickets for as low as $343. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Ontario to Asuncion for a low price.

  • What does ONT to ASU mean?

    ONT stands for Ontario Airport, while ASU stands for Asuncion Silvio Pettirossi Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from Ontario to Asuncion that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Asuncion flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Asuncion with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Asuncion flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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.

  • Can I find deals for flights from Ontario to Asuncion that allow pets onboard?

    Many airlines flying from Ontario to Asuncion offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Asuncion?

    Yes, you can often find last-minute deals on Ontario to Asuncion flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Asuncion flight deals updated?

    The Ontario to Asuncion flight deals you see on this page were last updated on 5/3.

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Search flights from Ontario to Asuncion by cabin class

Find flights from Ontario to Asuncion, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Asuncion?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario to Asuncion. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Asuncion?

Cheapflights simply makes it quick and affordable to book flights from Ontario to Asuncion by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ontario to Asuncion with no change fees?

Need flexible booking options for your flight to Asuncion from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Ontario to Asuncion become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Asuncion from Ontario today and book when prices fit your budget.

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