SFO - ASU

$428 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 11/9. 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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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, Apr 6 - Wed, Apr 8
LATAM Airlines Logo
11:55 pm - 6:10 amSFO-ASU
26h 15m2 stops
LATAM Airlines Logo
6:55 pm - 9:54 pmASU-SFO
30h 59m2 stops
$921LATAM Airlines
Find Deal
Sun, Apr 5 - Wed, Apr 8
Copa Airlines Logo
1:42 am - 5:37 amSFO-ASU
23h 55m1 stop
Copa Airlines Logo
6:42 am - 11:40 pmASU-SFO
20h 58m1 stop
$1,046Copa Airlines
Find Deal
Sun, Apr 5 - Wed, Apr 8
Avianca Logo
12:05 am - 4:40 amSFO-ASU
48h 35m2 stops
Avianca Logo
8:10 am - 12:35 pmASU-SFO
32h 25m2 stops
$1,149Avianca
Find Deal
Sun, Apr 5 - Tue, Apr 7
Copa Airlines Logo
1:42 am - 5:37 amSFO-ASU
23h 55m1 stop
Copa Airlines Logo
1:59 am - 6:25 pmASU-SFO
20h 26m1 stop
$1,181Copa Airlines
Find Deal
Sat, Nov 22 - Sat, Dec 6
LATAM Airlines Logo
12:25 pm - 6:15 amSFO-ASU
36h 50m2 stops
LATAM Airlines Logo
8:25 am - 10:14 pmASU-SFO
18h 49m2 stops
$1,372LATAM Airlines
Find Deal
Sun, Apr 5 - Wed, Apr 8
United Airlines Logo
12:45 am - 12:14 amSFO-ASU
19h 29m2 stops
United Airlines Logo
6:42 am - 11:40 pmASU-SFO
20h 58m1 stop
$1,433United Airlines
Find Deal
Sat, Nov 22 - Sat, Dec 6
United Airlines Logo
11:59 pm - 5:30 amSFO-ASU
24h 31m2 stops
United Airlines Logo
6:33 am - 8:29 pmASU-SFO
18h 56m1 stop
$1,478United Airlines
Find Deal
Mon, Apr 6 - Wed, Apr 8
United Airlines Logo
5:00 am - 5:37 amSFO-ASU
20h 37m2 stops
United Airlines Logo
6:42 am - 11:40 pmASU-SFO
20h 58m1 stop
$1,517United Airlines
Find Deal
Sat, Dec 27 - Thu, Jan 8
United Airlines Logo
7:11 pm - 12:11 amSFO-ASU
24h 00m2 stops
United Airlines Logo
6:42 am - 5:19 pmASU-SFO
39h 37m2 stops
$1,638United Airlines
Find Deal
Tue, Dec 23 - Sat, Jan 3
Avianca Logo
1:35 am - 5:15 amSFO-ASU
22h 40m2 stops
Avianca Logo
8:20 am - 9:50 pmASU-SFO
18h 30m2 stops
$1,746Avianca
Find Deal

Everything you should know

Top airlines
LATAM Airlines
Cheapest • from $921 (round-trip)
Copa Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
May
Cheapest • 46% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$921
Overall average: $931
LATAM Airlines
Mon 4/6Wed 4/8
SFO - ASU • 2 stops
Cheapest one-way
$425
Typical prices: $424-$431
Copa Airlines
Sun 11/9
SFO - ASU • 1 stop
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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.

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 May, where tickets cost $578 (return) on average. On the other hand, the most expensive months are February and January, where the average cost of round-trip tickets is $1,555 and $1,520 respectively.

Good to know

Low seasonOctober
Cheapest flight$425
Best time to beat the crowds but there is an average 29% increase in price.
Most popular time to fly and prices are also 41% 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 $921 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 $996 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 $1,049 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.
7.6
Copa AirlinesOverall score based on 1561 reviews
8.1Crew
7.4Comfort
7.8Boarding
6.9Food
6.8Entertainment
Airline reviews

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

6.0 GoodZach, Oct 2025DEN - PTY
Read more Copa Airlines reviews

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.

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.

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.

Check in -- in business took over 30 mins as there was only one attendant. Boarding was also a mess. The seat was too narrow and was not working properly. Food was very bad and the entertainment very poor. Crew was very polite and helpful, in fairness.

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 .

Just to drop my already labeled bag it took 50 minutes inline. Completely disappointed with Latam operation at GRU

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.

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.

Same as last comment. Food sucks. Quality. Not surprising most people have no clue about nourishment Clearly

We were in business class. the angled seats in that class do not have a real window view & the placement of the controls are bad. But we knew that. But the food options were mediocre. The taste was fine, but the size was for a child. It’s just really feels like United is skimping on everything. Even when we were in the Polaris lounge they did not have diet sodas. They said they were out no Coke zero no Diet Coke, etc. I do not think the portion of nuts they serve on the plane could get any smaller. Really a minimal service and offer for what you’re paying for in business.

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.

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

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