SFO - ASU

$425 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 4/19. 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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Everything you should know

Cheapest round-trip
$838
Typical prices: $496-$727
Avianca
Fri 5/8Wed 5/13
SFO - ASU • 2 stops
Cheapest one-way
$425
Typical prices: $391-$445
United Airlines
Sun 4/19
SFO - ASU • 2 stops
Top airlines
Avianca
Cheapest • from $838 (round-trip)
LATAM Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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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

Fri, May 8 - Wed, May 13
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
24h 45m
2 stops
Avianca Logo
8:10 am - 10:35 pm
ASU
-
SFO
18h 25m
2 stops
$838Avianca
Mon, Mar 9 - Thu, Mar 12
LATAM Airlines Logo
6:00 am - 6:15 am
SFO
-
ASU
20h 15m
2 stops
LATAM Airlines Logo
8:25 am - 12:35 am
ASU
-
SFO
20h 10m
2 stops
$871LATAM Airlines
Tue, Mar 17 - Tue, Mar 24
Avianca Logo
2:20 pm - 5:15 am
SFO
-
ASU
34h 55m
2 stops
Avianca Logo
8:20 am - 11:40 pm
ASU
-
SFO
19h 20m
2 stops
$879Avianca
Mon, Mar 9 - Thu, Mar 12
LATAM Airlines Logo
6:00 am - 6:15 am
SFO
-
ASU
20h 15m
2 stops
LATAM Airlines Logo
11:20 am - 12:07 pm
ASU
-
SFO
28h 47m
2 stops
$881LATAM Airlines
Wed, Apr 1 - Tue, Apr 7
United Airlines Logo
5:00 am - 5:33 am
SFO
-
ASU
20h 33m
2 stops
United Airlines Logo
6:33 am - 7:16 am
ASU
-
SFO
28h 43m
2 stops
$884United Airlines
Fri, May 8 - Wed, May 13
Multiple Airlines Logo
11:55 pm - 4:40 am
SFO
-
ASU
24h 45m
2 stops
Multiple Airlines Logo
11:05 am - 12:50 pm
ASU
-
SFO
29h 45m
3 stops
$885Multiple Airlines
Mon, Mar 16 - Tue, Mar 24
Copa Airlines Logo
1:54 am - 12:15 am
SFO
-
ASU
18h 21m
1 stop
Copa Airlines Logo
6:42 am - 11:40 pm
ASU
-
SFO
20h 58m
1 stop
$909Copa Airlines
Wed, Apr 1 - Tue, Apr 7
Copa Airlines Logo
8:35 pm - 12:05 am
SFO
-
ASU
23h 30m
1 stop
Copa Airlines Logo
6:33 am - 11:40 pm
ASU
-
SFO
21h 07m
1 stop
$929Copa Airlines
Thu, May 7 - Wed, May 13
Copa Airlines Logo
1:12 am - 12:08 am
SFO
-
ASU
18h 56m
1 stop
Copa Airlines Logo
6:33 am - 6:14 pm
ASU
-
SFO
15h 41m
1 stop
$949Copa Airlines
Fri, May 8 - Wed, May 13
Multiple Airlines Logo
2:15 pm - 4:40 am
SFO
-
ASU
34h 25m
3 stops
Multiple Airlines Logo
11:05 am - 12:50 pm
ASU
-
SFO
29h 45m
3 stops
$952Multiple 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.

How much is a round-trip flight from San Francisco 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 San Francisco to Asuncion departing in May.

Good to know

Low seasonMay
Cheapest flight$425
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 40% 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 $425 for a one-way ticket and $838 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 LATAM Airlines?

    The two airlines most popular with KAYAK users for flights from San Francisco to Asuncion are Copa Airlines and LATAM Airlines. With an average price for the route of $962 and an overall rating of 7.5, Copa Airlines is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,049 and an overall rating of 7.5.

  • 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
LATAM AirlinesOverall score based on 1917 reviews
7.5Boarding
7.3Comfort
7.0Entertainment
8.0Crew
6.7Food
Airline reviews

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.

2.0 MediocreJess, Jan 2026
BSB - GRU
Read more LATAM Airlines reviews

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 flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

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.

Great experience with a crew always thinking in the passenger

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

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

left on time, reasonable boarding process arrived early luggage came out quickly

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

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

Information on your arrival and departure airports