SFO - ASU

$453 Find Cheap Flights from San Francisco to Asuncion

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Asuncion departing on 5/20. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Asuncion

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Asuncion, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Asuncion, as well as popular online travel agencies
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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$950
Avianca
Wed 5/13Wed 5/27
SFO - ASU • 2 stops
Cheapest one-way
$453
Typical prices: $447-$481
Avianca
Wed 5/20
SFO - ASU • 2 stops
Top airlines
Cheapest • from $950 (round-trip)
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Francisco and Asuncion. You'll need at least 1 connection.
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Asuncion!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Francisco to Asuncion (SFO-ASU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco 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 San Francisco to Asuncion

Wed, May 13 - Wed, May 27
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
24h 45m
2 stops
Avianca Logo
8:25 am - 10:35 pm
ASU
-
SFO
42h 10m
2 stops
$950Avianca
Fri, Apr 24 - Sun, May 3
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
24h 45m
2 stops
Avianca Logo
8:25 am - 12:50 pm
ASU
-
SFO
32h 25m
2 stops
$978Avianca
Sun, May 10 - Wed, May 27
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
48h 45m
2 stops
Avianca Logo
8:25 am - 10:35 pm
ASU
-
SFO
42h 10m
2 stops
$979Avianca
Tue, Mar 31 - Tue, Apr 7
Copa Airlines Logo
1:23 am - 12:05 am
SFO
-
ASU
18h 42m
1 stop
Copa Airlines Logo
6:33 am - 11:40 pm
ASU
-
SFO
21h 07m
1 stop
$989Copa Airlines
Mon, May 11 - Wed, May 27
Avianca Logo
2:15 pm - 4:40 am
SFO
-
ASU
34h 25m
2 stops
Avianca Logo
8:25 am - 10:35 pm
ASU
-
SFO
18h 10m
2 stops
$991Avianca
Tue, May 12 - Wed, May 27
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
48h 45m
2 stops
Avianca Logo
8:25 am - 10:35 pm
ASU
-
SFO
18h 10m
2 stops
$998Avianca
Thu, May 14 - Wed, May 27
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
48h 45m
2 stops
Avianca Logo
8:25 am - 11:55 pm
ASU
-
SFO
43h 30m
2 stops
$1,008Avianca
Sat, May 9 - Tue, May 26
Copa Airlines Logo
1:12 am - 5:24 am
SFO
-
ASU
24h 12m
1 stop
Copa Airlines Logo
1:47 am - 11:40 pm
ASU
-
SFO
25h 53m
1 stop
$1,009Copa Airlines
Thu, May 14 - Tue, May 26
LATAM Airlines Logo
11:55 am - 5:40 pm
SFO
-
ASU
25h 45m
2 stops
LATAM Airlines Logo
11:10 am - 1:36 pm
ASU
-
SFO
30h 26m
2 stops
$1,015LATAM Airlines
Wed, Apr 1 - Tue, Apr 7
LATAM Airlines Logo
6:00 am - 5:40 pm
SFO
-
ASU
31h 40m
2 stops
LATAM Airlines Logo
8:10 am - 10:52 am
ASU
-
SFO
30h 42m
2 stops
$1,023LATAM Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to Asuncion flights

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

Which airlines provide the cheapest flights from San Francisco to Asuncion?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from San Francisco to Asuncion were found on Avianca ($950) and Copa Airlines ($989).

Good to know

Low seasonAugust
Cheapest flight$453
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 45% lower on average.
Flight from San Francisco to Asuncion

When to book flights from San Francisco to Asuncion

Are your dates flexible? Find out the best times to travel from San Francisco 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 San Francisco to Asuncion

  • What is the cheapest flight from San Francisco to Asuncion?

    In the last 3 days, the lowest price for a flight from San Francisco to Asuncion was $453 for a one-way ticket and $950 for a round-trip.

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

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

  • Which aircraft models fly most regularly from San Francisco to Asuncion?

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

  • Which airline alliances offer flights from San Francisco to Asuncion?

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

  • Which is the best airline for flights from San Francisco to Asuncion, Copa Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Francisco to Asuncion are Copa Airlines and United Airlines. With an average price for the route of $986 and an overall rating of 7.5, Copa Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $867 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Francisco 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 San Francisco to Asuncion.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Asuncion from San Francisco 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 San Francisco 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 San Francisco with another airline. Booking your flights between San Francisco 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 San Francisco 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 San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from San Francisco to Asuncion

 
See real verified KAYAK customer reviews for airlines flying from San Francisco 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 San Francisco 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.
7.5
Copa AirlinesOverall score based on 1573 reviews
7.8Boarding
6.8Food
7.4Comfort
6.8Entertainment
8.1Crew
Airline reviews

The food is terrible I ask for water never got transport my mother we’re late and my sister from Lima was the worst waiting to long for wheelchair

2.0 MediocreEdwin, Mar 2026
LIM - PTY
Read more Copa Airlines reviews

The food is terrible I ask for water never got transport my mother we’re late and my sister from Lima was the worst waiting to long for wheelchair

Seats were awful. Media should have been included for such a long flight.

A lot things happened in this trip.The fly should be less stress.

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.

The flight was good overall. Everything went smoothly, although the landing was a bit rough. Still, it was a pleasant experience

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

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

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.

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Apart of Sky miles delta. And they go everywhere in Brazil

There was a mechanical issue with the plane that they had to work on before we could take off. That's fine, by all means, PLEASE make sure the mechanics are functioning properly. What was a problem was the fact that we sat on the tarmac for 4.5 hours without moving, without letting us off the plane, and without climate control and air running through the plane. There was no explanation as to what was going on; they just kept promising that it would be "15 minutes, then we are on our way." At one point, they even switched the entire crew out and told everyone we just needed to wait for new employees to show up. Then, as the 4 hours were not moving, an hour before the full refund, they made a big show about "the flight starting and the doors are locked, so you have to sit down." We didn't move for another 40 minutes; they were just trying to skirt around legalities that entitled us to restitution. When the flight finally was underway, the plane was gigantic but cramped in design, my entertainment screen kept freezing and glitching, and subtitles didn't work, and the crew was passive-aggressive. Terrible flight.

Comfort in exit seat was excellent. FLight crew and flight were excellent. However exit seat tray table was broken so could not use it. Entertainment monitor did not work at all despite attempts to reset it.

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

I like this airline a lot no problems at all, except being forced to check a carry-on bag ., Overall very good airline

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

The plane broke down at the Lima stopover and they offered to put me on a flight the be t day but I had to be back in LA that morning and so I had to buy another ticket from Avianca and United for $2k I asked LATAM for compensation and received none. Very bad experience

Poor handling of carry on luggage. We had a 8 hour stop in Santiago, are over 70 and, in spite of paying full fare they wanted to send carry on to luggage hold. No empathy. We had to show that several group 4/5 passengers were not sending their carry ons before they finally let Is keep them. Very poor .

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

it was a very short flight so my expectations were low.

Entertainment kept turning itself off. Gave up on watching a movie.

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

The flight crew where really good. Better then the crew from BNE to SFO

Everything you need to know for your flight from San Francisco to Asuncion

Information on your arrival and departure airports