Cheap flights from San Francisco to Buenos Aires from $329
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Buenos Aires departing on 8/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from San Francisco to Buenos Aires
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Buenos Aires?
The cheapest month to fly to Buenos Aires from San Francisco is in May. Flight prices, which tend to average around $1,024, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Buenos Aires from San Francisco during October instead. Flights to Buenos Aires in October, while not as cheap as those in May, still average around $1,083.
What is the cheapest day to depart on your flight to Buenos Aires?
On average, the least expensive day to fly to Buenos Aires from San Francisco is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,176. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Saturday is $1,303.
What is the cheapest time of day to depart on your flight to Buenos Aires?
Our most recent data shows that the best time of day to fly to Buenos Aires is in the afternoon. Flights from San Francisco to Buenos Aires during this time can be as low as $1,053. Try not to purchase tickets at noon because they tend to be around $1,341. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to Buenos Aires?
You are more likely to see cheaper flights to Buenos Aires from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,258 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from San Francisco for as low as $1,135 on momondo.
Can stopping save me money on San Francisco to Buenos Aires flights?
You could potentially save up to 4% on your flight if you consider stops on a San Francisco to Buenos Aires flight.
How have San Francisco to Buenos Aires flight prices changed over time?
As of July 2025, prices for San Francisco to Buenos Aires flights are approximately 87% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from San Francisco to Buenos Aires?
Avianca is the most popular carrier operating from San Francisco to Buenos Aires
What airlines fly to Buenos Aires?
American Airlines, United Airlines and Copa Airlines are the top three most popular airlines that fly to Buenos Aires from San Francisco according to our data. American Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 7 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.
When to book flights from San Francisco to Buenos Aires
Cheap San Francisco to Buenos Aires (SFO to BUE) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Buenos Aires
How far is San Francisco to Buenos Aires by plane?
A flight from San Francisco to Buenos Aires will travel around 6464.7 mi. Typically, this will take 17h 40m by plane in normal conditions.
When did momondo last update prices for flights from San Francisco Airport to Buenos Aires?
Prices for flights from San Francisco Airport to Buenos Aires are updated daily.
How many operators does momondo search for flights from San Francisco Airport to Buenos Aires?
As of July 2025, there are 7 operators available to choose from for flights from San Francisco Airport to Buenos Aires.
How old do you have to be to fly from San Francisco Airport to Buenos Aires?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Buenos Aires.
What documentation or ID do you need to fly to Buenos Aires?
The travel and health documents required for your trip to Buenos Aires can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from San Francisco to Buenos Aires?
Based on momondo bookings for flights between San Francisco and Buenos Aires, the leading airline is American Airlines, making up 23% of the total bookings. Other popular airlines include Copa Airlines with 21%, United Airlines with 20%, and LATAM Airlines with 15%.
Best airlines flying from San Francisco to Buenos Aires
Compare and see reviews for airlines that fly from San Francisco to Buenos Aires with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $658 | Free Cancellation | Rating 7.5 1,805 reviews | |||
| PriceFrom $744 | Free Cancellation | Rating 6.7 2,363 reviews | |||
| PriceFrom $991 | Free Cancellation | Rating 7.5 1,467 reviews | |||
| PriceFrom $1,023 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,025 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $1,055 | Free Cancellation | Rating 8.0 7,983 reviews | |||
| PriceFrom $1,120 | Free Cancellation | Rating 7.5 1,718 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Francisco to Buenos Aires?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Francisco to Buenos Aires. momondo saves you time and could save you money on your trip.
Can I find flights from San Francisco to Buenos Aires with flexible booking policies on momondo?
All flight searches from San Francisco to Buenos Aires on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from San Francisco to Buenos Aires?
momondo provides multiple filters to help you find the best flight to Buenos Aires from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from San Francisco to Buenos Aires right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Buenos Aires from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.