SFO - ASU

$436 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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Everything you should know

Cheapest round-trip
$954
Typical prices: $982-$729
Avianca
Mon 5/18Sun 6/28
SFO - ASU • 2 stops
Cheapest one-way
$436
Typical prices: $447-$485
Avianca
Wed 5/20
SFO - ASU • 2 stops
Top airlines
Cheapest • from $954 (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.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
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

Mon, May 18 - Sun, Jun 28
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
$954Avianca
Thu, Sep 24 - Tue, Oct 27
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
48h 45m
2 stops
Avianca Logo
8:20 am - 11:40 pm
ASU
-
SFO
19h 20m
2 stops
$971Avianca
Tue, Jun 2 - Wed, Jun 10
Avianca Logo
2:30 am - 4:40 am
SFO
-
ASU
46h 10m
2 stops
Avianca Logo
8:25 am - 11:55 pm
ASU
-
SFO
43h 30m
2 stops
$981Avianca
Mon, Sep 21 - Sat, Oct 31
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
24h 45m
2 stops
Avianca Logo
8:20 am - 11:40 pm
ASU
-
SFO
19h 20m
2 stops
$991Avianca
Fri, May 15 - Sun, Jun 28
Avianca Logo
2:15 pm - 4:40 am
SFO
-
ASU
34h 25m
2 stops
Avianca Logo
8:25 am - 12:50 pm
ASU
-
SFO
32h 25m
2 stops
$1,001Avianca
Sun, Sep 20 - Sat, Oct 31
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
48h 45m
2 stops
Avianca Logo
8:20 am - 10:50 pm
ASU
-
SFO
18h 30m
2 stops
$1,008Avianca
Wed, Sep 23 - Tue, Oct 27
Aeromexico Logo
2:31 pm - 12:15 pm
SFO
-
ASU
41h 44m
2 stops
Aeromexico Logo
8:10 am - 12:51 pm
ASU
-
SFO
32h 41m
2 stops
$1,009Aeromexico
Mon, May 18 - Fri, Jun 26
Avianca Logo
11:55 pm - 4:40 am
SFO
-
ASU
24h 45m
2 stops
Avianca Logo
8:25 am - 11:55 pm
ASU
-
SFO
43h 30m
2 stops
$1,012Avianca
Mon, Aug 17 - Mon, Sep 21
Aeromexico Logo
2:31 pm - 12:15 pm
SFO
-
ASU
41h 44m
2 stops
Aeromexico Logo
2:55 am - 12:42 pm
ASU
-
SFO
37h 47m
2 stops
$1,017Aeromexico
Tue, Jun 2 - Sun, Jun 7
Avianca Logo
2:30 am - 4:40 am
SFO
-
ASU
46h 10m
2 stops
Avianca Logo
8:25 am - 10:35 pm
ASU
-
SFO
42h 10m
2 stops
$1,018Avianca
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.

What is the cheapest month to fly from San Francisco to Asuncion?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco 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 San Francisco to Asuncion is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are February and April, where the average cost of round-trip tickets is $1,861 and $1,717 respectively.

Good to know

Low seasonAugust
Cheapest flight$436
Best time to beat the crowds with an average 59% drop in price.
Most popular time to fly and prices are also 59% 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 $436 for a one-way ticket and $954 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 $1,006 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 1577 reviews
8.1Crew
6.8Entertainment
6.8Food
7.8Boarding
7.4Comfort
Airline reviews

I was flying business class, and the French fellow passengers were super noisy. It was not a comfortable flight. And the crew was not helpful.

2.0 MediocreFiruz, Apr 2026
MEX - PTY
Read more Copa Airlines reviews

I was flying business class, and the French fellow passengers were super noisy. It was not a comfortable flight. And the crew was not helpful.

Boarding was a mess, they call all priority members without distinction so gold, platinum, silver were all mixed together in a long line which defeats the purpose

Entire experience from check in to landing was amazing the flight crew was excellent and friendly. Seats were comfortable.

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.

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

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.

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 .

Some crew were unfriendly or in some cases just straight up rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

It was perfect! I've never flown with United before, but I definitely will in the future

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

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

Information on your arrival and departure airports