SFO - ASU

$420 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 12/28. 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

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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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, Oct 13 - Sun, Oct 19
Copa Airlines Logo
1:31 am - 12:01 amSFO-ASU
18h 30m1 stop
Copa Airlines Logo
1:45 am - 11:39 pmASU-SFO
25h 54m1 stop
$868Copa Airlines
Find Deal
Sun, Oct 12 - Mon, Oct 20
Copa Airlines Logo
1:31 am - 5:25 amSFO-ASU
23h 54m1 stop
Copa Airlines Logo
6:32 am - 11:39 pmASU-SFO
21h 07m1 stop
$888Copa Airlines
Find Deal
Tue, Oct 14 - Mon, Oct 20
LATAM Airlines Logo
11:58 am - 5:40 pmSFO-ASU
25h 42m2 stops
LATAM Airlines Logo
8:25 am - 11:40 amASU-SFO
31h 15m2 stops
$955LATAM Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
LATAM Airlines Logo
8:20 am - 6:10 amSFO-ASU
17h 50m2 stops
LATAM Airlines Logo
8:25 am - 9:58 amASU-SFO
29h 33m2 stops
$1,006LATAM Airlines
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Mon, Oct 13 - Mon, Oct 20
Multiple Airlines Logo
2:20 pm - 4:40 amSFO-ASU
34h 20m2 stops
Multiple Airlines Logo
12:30 pm - 12:35 pmASU-SFO
28h 05m3 stops
$1,031Multiple Airlines
Find Deal
Mon, Oct 13 - Mon, Oct 20
Multiple Airlines Logo
12:05 am - 4:40 amSFO-ASU
24h 35m2 stops
Multiple Airlines Logo
12:30 pm - 12:35 pmASU-SFO
28h 05m3 stops
$1,033Multiple Airlines
Find Deal
Sat, Feb 14 - Sat, Feb 21
Avianca Logo
11:10 pm - 5:15 amSFO-ASU
49h 05m2 stops
Avianca Logo
8:20 am - 12:00 pmASU-SFO
56h 40m2 stops
$1,038Avianca
Find Deal
Wed, Oct 15 - Sat, Nov 15
Avianca Logo
2:20 pm - 4:40 amSFO-ASU
34h 20m2 stops
Avianca Logo
8:20 am - 9:50 pmASU-SFO
18h 30m2 stops
$1,061Avianca
Find Deal
Tue, Feb 17 - Thu, Feb 19
United Airlines Logo
8:45 am - 5:32 amSFO-ASU
15h 47m1 stop
United Airlines Logo
1:59 am - 5:54 pmASU-SFO
20h 55m2 stops
$1,148United Airlines
Find Deal
Mon, Feb 16 - Mon, Feb 23
United Airlines Logo
12:43 am - 5:32 amSFO-ASU
23h 49m2 stops
United Airlines Logo
1:59 am - 8:29 pmASU-SFO
23h 30m1 stop
$1,152United Airlines
Find Deal

Everything you should know

Top airlines
Copa Airlines
Cheapest • from $868 (round-trip)
Copa Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$868
Copa Airlines
Mon 10/13Sun 10/19
SFO - ASU • 1 stop
Cheapest one-way
$420
Typical prices: $221-438
Avianca
Sun 12/28
SFO - ASU • 2 stops
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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!
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.

What’s the cheapest day of the week to fly from San Francisco to Asuncion?

The average price of all round-trip flights from San Francisco to Asuncion clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Asuncion on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from San Francisco to Asuncion. For your return ticket, we recommend flying on a Wednesday and avoiding Saturdays for the best deals.

Good to know

Low seasonMay
Cheapest flight$420
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 39% 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 $420 for a one-way ticket and $868 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, and oneworld are the airline alliances operating flights between San Francisco and Asuncion, with Star Alliance being the most commonly used for this route.

  • 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 $1,024 and an overall rating of 7.6, Copa Airlines is the most popular choice. LATAM Airlines is also a great choice for the route, with an average price of $1,016 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.
7.6
Copa AirlinesOverall score based on 1531 reviews
6.8Entertainment
8.1Crew
7.8Boarding
6.8Food
7.4Comfort
Airline reviews

Great experience with a crew always thinking in the passenger

10.0 ExcellentJuan Carlos, Jul 2025PTY - IAD
Read more Copa Airlines reviews

Great experience with a crew always thinking in the passenger

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

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

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

Had to go through security at the gate again. Had to take off shoes and go through the whole thing again even though we have global entry. They asked us to check in items bought at duty free during our layover and since we checked our luggage at the original departure airport, they forced us to check in a small backpack. None of this ever happened with other airlines. In addition, no vegetarian food option and no snacks during a 7 hr flight. Luggage limits are unusually small. This is unacceptable. Will NEVER fly Copa again and will tell friends and family to avoid this airline.

We paid extra with copa for seats near one another The plane was changed and we lost our seats We were all Separated. We have not received a refund for our seats despite emailing and calling.

Tell people to remain in their seats during the meal/beverage distribution. Enforce boarding by group numbers. No one was checking. Tell people to turn their electronics speakers off. Bigger cups for drinks.

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.

There was no individual at the front check in when I arrived. I waited for at least 15 minutes and walked around asking security/janitors if they could help and they did not have a solution. So I had to take my checked bag through security and they threw away some of my items. I ended up making it to the gate only a few minutes before it closed due to my waiting for an agent at check in.

It would have been better if they don't separate families in seating. We were seated in the aile row in the middle of a family of four. It would have been better if they they seat the family of four together than separated.

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.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Bought a ticket that included a bag and they still charged me to check it in, latam is the worst airline.

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

Boarding was done by woman who insisted on strict standing in line policy; food was ok; entertainment minimal

entertainment was not good; the shoulder strap on Business class seat did not sit well across the body (more like across the neck); the food was not hot and the special meal promoted by insert in the menu was not available to us

Wider seats, better seat cushions, (I felt like there was a board I was sitting on). I had the chicken to eat but It neither tasted nor looked like chicken. The fruit was good.

I was in the last row and they sent me to check in my luggage last minute after boarding. I had to go through the crowd.

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Horrific. They missed my connecting flight to San Diego. I didn’t get there until Monday at 9am when I had a mandatory court settlement conference scheduled at 6am since we had parties on the east coast. This caused many issues. All because United apparently forgot to hold the doors open until my flight landed that only had a 10 minute delay. This was the last flight to Southern California. So I couldn’t even rent a car to finish the trip. United cannot be trusted when traveling on specific days and times since weather didn’t have anything to do with the delays.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

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

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