BOS - ASU

$462 Find Cheap Flights from Boston to Asuncion - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Asuncion departing on 8/12. 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.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$723
Typical prices: $926-$1,149
Avianca
Sat 9/26Fri 10/9
BOS - ASU • 1 stop
Cheapest one-way
$462
Typical prices: $1,198-$1,694
LATAM Airlines
Wed 8/12
BOS - ASU • 1 stop
Top airlines
Avianca
Cheapest • from $723 (round-trip)
Copa Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and Asuncion. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Sao Paulo (GRU)
Cheapest • Avg $906 (round-trip)
Sao Paulo (GRU)
Shortest trip • 13h 00m (one-way)
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 100% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Asuncion!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Asuncion (BOS-ASU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Asuncion that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Asuncion

Sat, Sep 26 - Fri, Oct 9
Avianca Logo
8:45 am - 4:40 am
BOS
-
ASU
18h 55m
1 stop
Avianca Logo
8:25 am - 6:50 am
ASU
-
BOS
23h 25m
1 stop
$723Avianca
Sat, Sep 26 - Sun, Oct 11
Avianca Logo
8:45 am - 4:40 am
BOS
-
ASU
18h 55m
1 stop
Avianca Logo
8:25 am - 2:50 pm
ASU
-
BOS
31h 25m
2 stops
$730Avianca
Mon, Sep 28 - Fri, Oct 9
Avianca Logo
4:50 pm - 4:40 am
BOS
-
ASU
34h 50m
2 stops
Avianca Logo
8:25 am - 6:50 am
ASU
-
BOS
23h 25m
1 stop
$730Avianca
Mon, Sep 28 - Sun, Oct 11
Avianca Logo
4:50 pm - 4:40 am
BOS
-
ASU
34h 50m
2 stops
Avianca Logo
8:25 am - 2:50 pm
ASU
-
BOS
31h 25m
2 stops
$738Avianca
Sat, Sep 26 - Fri, Oct 9
Avianca Logo
8:45 am - 4:40 am
BOS
-
ASU
18h 55m
1 stop
Avianca Logo
8:25 am - 2:50 pm
ASU
-
BOS
55h 25m
2 stops
$747Avianca
Sat, Sep 26 - Wed, Oct 7
Avianca Logo
8:45 am - 4:40 am
BOS
-
ASU
18h 55m
1 stop
Avianca Logo
8:25 am - 7:10 am
ASU
-
BOS
23h 45m
1 stop
$748Avianca
Mon, Sep 28 - Fri, Oct 9
Avianca Logo
4:50 pm - 4:40 am
BOS
-
ASU
34h 50m
2 stops
Avianca Logo
8:25 am - 2:50 pm
ASU
-
BOS
55h 25m
2 stops
$755Avianca
Fri, Sep 25 - Wed, Oct 7
Avianca Logo
4:50 pm - 4:40 am
BOS
-
ASU
34h 50m
2 stops
Avianca Logo
8:25 am - 7:10 am
ASU
-
BOS
23h 45m
1 stop
$762Avianca
Wed, Nov 4 - Wed, Nov 18
Copa Airlines Logo
2:50 pm - 5:25 am
BOS
-
ASU
12h 35m
1 stop
Copa Airlines Logo
6:31 am - 10:01 pm
ASU
-
BOS
17h 30m
1 stop
$849Copa Airlines
Thu, Oct 1 - Sat, Oct 10
Copa Airlines Logo
8:47 am - 12:18 am
BOS
-
ASU
14h 31m
1 stop
Copa Airlines Logo
6:33 am - 11:02 pm
ASU
-
BOS
17h 29m
1 stop
$849Copa Airlines
Booking Insights

KAYAK's insights & trends for Boston to Asuncion flights

Get data-powered insights and trends into flights from Boston to Asuncion to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boston to Asuncion?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Asuncion departing in September.

Flight prices are below average for this route right now.

Flights to Asuncion from Boston usually cost between $901 and $1,245 in September.
The lowest price found in the past 5 days was $723 on Avianca (Sep 26-Oct 9).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Asuncion, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Asuncion is June, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and February, where the average cost of round-trip tickets is $1,318 and $1,160 respectively.

Find deals

Good to know

Cheapest flight

$462
Most popular time to fly and prices are also 4% lower on average.
Flight from Boston to Asuncion

When to book flights from Boston to Asuncion

Are your dates flexible? Find out the best times to travel from Boston to Asuncion based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Asuncion

  • What is the cheapest flight from Boston to Asuncion?

    In the last 5 days, the lowest price for a flight from Boston to Asuncion was $462 for a one-way ticket and $723 for a round-trip.

  • Do I need a passport to fly between Boston and Asuncion?

    Yes, you’ll need a passport to travel to Asuncion from Boston.

  • Which airports will I be using when flying from Boston to Asuncion?

    Boston and Asuncion are both served by 1 main airport. You will leave Boston from Boston Logan Intl and will be arriving at Asuncion Silvio Pettirossi.

  • Which aircraft models fly most regularly from Boston to Asuncion?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Asuncion?

    Star Alliance is the only airline alliance operating flights between Boston and Asuncion.

  • How does KAYAK find such low prices on flights from Boston to Asuncion?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Asuncion.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Asuncion?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Asuncion from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Asuncion?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Asuncion with an airline and back to Boston with another airline. Booking your flights between Boston and ASU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Asuncion?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Asuncion from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Boston to Asuncion

 
See real verified KAYAK customer reviews for airlines flying from Boston to Asuncion. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Asuncion? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Copa AirlinesOverall score based on 1562 reviews
6.9Food
7.8Boarding
7.4Comfort
6.8Entertainment
8.1Crew
Airline reviews

We where skipped for this flight will not head to Panama until tonight..

2.0 MediocreRussell, Jul 2026
LAX - PTY
Read more Copa Airlines reviews

We where skipped for this flight will not head to Panama until tonight..

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

the planes are not modern there are no phone chargers

As usual, the flight with normal legroom was not very comfortable, but the second flight was much better because we had paid for extra legroom. It was very nice to check our bags without an extra fee.

Everything you need to know for your flight from Boston to Asuncion

Information on your arrival and departure airports

Boston (BOS)
Asuncion (ASU)