$316 Cheap Flights from Boston (BOS) to Asuncion (ASU)

View $316 flight on Thu, Sep 18, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) to Asuncion (ASU-Silvio Pettirossi Intl.)

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Cheap Flights from Boston to Asuncion (BOS-ASU)

Prices were available within the past 7 days and start at $316 for one-way flights and $693 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

avianca
Wed, Sep 17 - Wed, Sep 24
BOS
Boston
ASU
Asuncion
$693 Roundtrip, found 3 days ago
$693
Roundtrip
found 3 days ago
Select avianca flight, departing Wed, Sep 17 from Boston to Asuncion, returning Wed, Sep 24, priced at $693 found 3 days ago
avianca
Wed, Aug 27 - Wed, Sep 3
BOS
Boston
ASU
Asuncion
$726 Roundtrip, found 3 days ago
$726
Roundtrip
found 3 days ago
Select avianca flight, departing Wed, Aug 27 from Boston to Asuncion, returning Wed, Sep 3, priced at $726 found 3 days ago
avianca
Mon, Sep 1 - Sun, Sep 14
BOS
Boston
ASU
Asuncion
$737 Roundtrip, found 6 hours ago
$737
Roundtrip
found 6 hours ago
Select avianca flight, departing Mon, Sep 1 from Boston to Asuncion, returning Sun, Sep 14, priced at $737 found 6 hours ago
avianca
Wed, Aug 20 - Wed, Aug 27
BOS
Boston
ASU
Asuncion
$743 Roundtrip, found 3 days ago
$743
Roundtrip
found 3 days ago
Select avianca flight, departing Wed, Aug 20 from Boston to Asuncion, returning Wed, Aug 27, priced at $743 found 3 days ago
avianca
Mon, Sep 1 - Sun, Sep 14
BOS
Boston
ASU
Asuncion
$754 Roundtrip, found 6 hours ago
$754
Roundtrip
found 6 hours ago
Select avianca flight, departing Mon, Sep 1 from Boston to Asuncion, returning Sun, Sep 14, priced at $754 found 6 hours ago
United
Sun, Sep 7 - Sun, Sep 14
BOS
Boston
ASU
Asuncion
$769 Roundtrip, found 3 days ago
$769
Roundtrip
found 3 days ago
Select United flight, departing Sun, Sep 7 from Boston to Asuncion, returning Sun, Sep 14, priced at $769 found 3 days ago
avianca
Mon, Sep 1 - Sun, Sep 14
BOS
Boston
ASU
Asuncion
$803 Roundtrip, found 6 hours ago
$803
Roundtrip
found 6 hours ago
Select avianca flight, departing Mon, Sep 1 from Boston to Asuncion, returning Sun, Sep 14, priced at $803 found 6 hours ago
JetBlue Airways
Mon, Sep 1 - Sun, Sep 14
BOS
Boston
ASU
Asuncion
$846 Roundtrip, found 6 hours ago
$846
Roundtrip
found 6 hours ago
Select JetBlue Airways flight, departing Mon, Sep 1 from Boston to Asuncion, returning Sun, Sep 14, priced at $846 found 6 hours ago
Copa
Wed, Oct 1 - Mon, Nov 3
BOS
Boston
ASU
Asuncion
$873 Roundtrip, found 9 hours ago
$873
Roundtrip
found 9 hours ago
Select Copa flight, departing Wed, Oct 1 from Boston to Asuncion, returning Mon, Nov 3, priced at $873 found 9 hours ago
LATAM Airlines Group
Thu, Nov 27 - Wed, Dec 10
BOS
Boston
ASU
Asuncion
$914 Roundtrip, found 6 days ago
$914
Roundtrip
found 6 days ago
Select LATAM Airlines Group flight, departing Thu, Nov 27 from Boston to Asuncion, returning Wed, Dec 10, priced at $914 found 6 days ago
Flights from Boston (BOS) to Asuncion (ASU)
Origin airport
Logan Intl.
Destination airport
Silvio Pettirossi Intl.
Airlines serving
Aeromexico, Copa, GOL Linhas Aereas S.A., LATAM Airlines Group, United, avianca
Roundtrip price
$692
Distance
4749 mi

Boston to Asuncion Flights

The cheapest times to fly from Boston to Asuncion

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Asuncion are during the month of September. You can find some of the cheapest flights from Boston to Asuncion with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Asuncion

Sunday is one of the best days to book for cheap flights from Boston to Asuncion: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Asuncion

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Asuncion in 2025. You can also book with separate airlines for your outbound and return journeys, from $316 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Asuncion flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Asuncion airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Silvio Pettirossi Intl. Airport (ASU) cost?
Discover the latest flight deals from BOS to ASU by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BOS to ASU?
The cheapest flights from BOS to ASU are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BOS to ASU?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BOS to ASU. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Logan Intl. Airport (BOS) to Silvio Pettirossi Intl. Airport (ASU)?
Direct flights from Logan Intl. Airport (BOS) to Silvio Pettirossi Intl. Airport (ASU) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BOS to ASU?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Silvio Pettirossi Intl. Airport (ASU)?
To avoid potential delays on the Logan Intl. Airport (BOS) to Silvio Pettirossi Intl. Airport (ASU) route, aim to fly before 3 PM. Later flights are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Silvio Pettirossi Intl. Airport (ASU) last-minute?
Last-minute fares from BOS to ASU are usually more expensive. To secure the lowest prices, start looking for flights ahead of time. That said, if your travel plans are flexible, it's possible to score a cheap ticket right before your trip.
Is it cheaper to book a BOS to ASU flight and hotel package?
Compared with arranging hotels and flights separately, booking a BOS to ASU flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place takes the hassle out of planning your trip. Simply pick your flights and select from our extensive range of stays, then customize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Silvio Pettirossi Intl. Airport (ASU)?
If you reserved your BOS to ASU flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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*Available to One Key members.