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Cheap flights from San José to Buenos Aires from $172

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 José to Buenos Aires departing on 12/28. 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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Cheap round-trip flights

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Avianca Logo
4:45 pm - 5:10 amSJO-EZE
9h 25m1 stop
Avianca Logo
5:55 am - 12:35 pmEZE-SJO
9h 40m1 stop
$362Avianca
Find Deal
mié., abr. 22 - vie., may. 1
Avianca Logo
4:15 pm - 5:50 amSJO-EZE
10h 35m1 stop
Avianca Logo
7:30 am - 3:20 pmEZE-SJO
10h 50m1 stop
$364Avianca
Find Deal
lun., nov. 17 - lun., nov. 24
LATAM Airlines Logo
5:00 pm - 6:20 amSJO-EZE
10h 20m1 stop
LATAM Airlines Logo
3:55 am - 3:35 pmEZE-SJO
14h 40m1 stop
$372LATAM Airlines
Find Deal
mié., mar. 18 - lun., mar. 30
Copa Airlines Logo
4:08 am - 10:31 pmSJO-EZE
15h 23m1 stop
Copa Airlines Logo
5:16 am - 1:53 pmEZE-SJO
11h 37m1 stop
$374Copa Airlines
Find Deal
mié., dic. 3 - lun., dic. 8
Copa Airlines Logo
8:10 am - 10:31 pmSJO-EZE
11h 21m1 stop
Copa Airlines Logo
12:07 am - 7:10 amEZE-SJO
10h 03m1 stop
$395Copa Airlines
Find Deal
mar., dic. 2 - jue., dic. 11
LATAM Airlines Logo
5:00 pm - 6:13 pmSJO-EZE
22h 13m2 stops
LATAM Airlines Logo
7:40 am - 3:35 pmEZE-SJO
10h 55m1 stop
$397LATAM Airlines
Find Deal
mié., abr. 22 - sáb., may. 9
Multiple Airlines Logo
4:45 pm - 5:10 amSJO-EZE
9h 25m1 stop
Multiple Airlines Logo
4:05 am - 3:35 pmEZE-SJO
14h 30m1 stop
$421Multiple Airlines
Find Deal
lun., nov. 24 - mié., dic. 3
Multiple Airlines Logo
5:00 pm - 7:55 amSJO-AEP
11h 55m1 stop
Multiple Airlines Logo
9:00 am - 7:40 pmAEP-SJO
13h 40m1 stop
$441Multiple Airlines
Find Deal
mar., nov. 18 - mar., nov. 25
GOL Logo
8:55 pm - 5:20 pmSJO-AEP
17h 25m1 stop
GOL Logo
6:20 pm - 7:40 pmAEP-SJO
28h 20m1 stop
$502GOL
Find Deal
mar., nov. 18 - vie., nov. 21
GOL Logo
8:55 pm - 5:20 pmSJO-AEP
17h 25m1 stop
GOL Logo
6:20 pm - 7:40 pmAEP-SJO
28h 20m1 stop
$541GOL
Find Deal
jue., nov. 13 - vie., nov. 21

Avianca flights from San José to Buenos Aires

Our best Avianca deals on San José to Buenos Aires flight tickets
Avianca
Apr 22
SJO4:45 pmSan José Juan Santamaria Intl
9h 25m
1 stop
EZE5:10 amBuenos Aires Ministro Pistarini
May 1
EZE5:55 amBuenos Aires Ministro Pistarini
9h 40m
1 stop
SJO12:35 pmSan José Juan Santamaria Intl
$362
Find similar
Avianca
Nov 17
SJO4:15 pmSan José Juan Santamaria Intl
10h 35m
1 stop
EZE5:50 amBuenos Aires Ministro Pistarini
Nov 24
EZE7:30 amBuenos Aires Ministro Pistarini
10h 50m
1 stop
SJO3:20 pmSan José Juan Santamaria Intl
$364
Find similar
Avianca
Apr 20
SJO6:53 amSan José Juan Santamaria Intl
15h 32m
1 stop
EZE1:25 amBuenos Aires Ministro Pistarini
Apr 26
EZE6:15 amBuenos Aires Ministro Pistarini
9h 40m
SJO12:55 pmSan José Juan Santamaria Intl
$366
Find similar

LATAM Airlines flights from San José to Buenos Aires

Our best LATAM Airlines deals on San José to Buenos Aires flight tickets
LATAM Airlines
Mar 18
SJO5:00 pmSan José Juan Santamaria Intl
10h 20m
1 stop
EZE6:20 amBuenos Aires Ministro Pistarini
Mar 30
EZE3:55 amBuenos Aires Ministro Pistarini
14h 40m
1 stop
SJO3:35 pmSan José Juan Santamaria Intl
$372
Find similar
LATAM Airlines
Apr 22
SJO5:00 pmSan José Juan Santamaria Intl
22h 13m
2 stops
EZE6:13 pmBuenos Aires Ministro Pistarini
May 9
EZE7:40 amBuenos Aires Ministro Pistarini
10h 55m
1 stop
SJO3:35 pmSan José Juan Santamaria Intl
$397
Find similar
LATAM Airlines
Mar 17
SJO5:00 pmSan José Juan Santamaria Intl
24h 55m
2 stops
EZE8:55 pmBuenos Aires Ministro Pistarini
Mar 31
EZE3:55 amBuenos Aires Ministro Pistarini
14h 40m
1 stop
SJO3:35 pmSan José Juan Santamaria Intl
$404
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San José to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated noviembre 4, 2025.
Use the filters below to find and compare flights from San José to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoséBuenos Aires

SJO - EZE

SJOEZE

San José Juan Santamaria Intl

mié. 4/22

4:45 pm-5:10 am

1 stop9h 25m

Buenos Aires Ministro Pistarini

vie. 5/1

5:55 am-12:35 pm

1 stop9h 40m

$362

San JoséBuenos Aires

SJO - EZE

SJOEZE

San José Juan Santamaria Intl

lun. 11/17

4:15 pm-5:50 am

1 stop10h 35m

Buenos Aires Ministro Pistarini

lun. 11/24

7:30 am-3:20 pm

1 stop10h 50m

$364

San JoséBuenos Aires

SJO - EZE

SJOEZE

San José Juan Santamaria Intl

mié. 3/18

5:00 pm-6:20 am

1 stop10h 20m

Buenos Aires Ministro Pistarini

lun. 3/30

3:55 am-3:35 pm

1 stop14h 40m

$372

San JoséBuenos Aires

SJO - EZE

SJOEZE

San José Juan Santamaria Intl

mié. 12/3

4:08 am-10:31 pm

1 stop15h 23m

Buenos Aires Ministro Pistarini

lun. 12/8

5:16 am-1:53 pm

1 stop11h 37m

$374

San JoséBuenos Aires

SJO - EZE

SJOEZE

San José Juan Santamaria Intl

mar. 12/2

8:10 am-10:31 pm

1 stop11h 21m

Buenos Aires Ministro Pistarini

jue. 12/11

12:07 am-7:10 am

1 stop10h 03m

$395

San JoséBuenos Aires

SJO - EZE

SJOEZE

San José Juan Santamaria Intl

mié. 4/22

5:00 pm-6:13 pm

2 stops22h 13m

Buenos Aires Ministro Pistarini

sáb. 5/9

7:40 am-3:35 pm

1 stop10h 55m

$397

San JoséBuenos Aires

SJO - EZE

SJOEZE

San José Juan Santamaria Intl

lun. 11/24

4:45 pm-5:10 am

1 stop9h 25m

Buenos Aires Ministro Pistarini

mié. 12/3

4:05 am-3:35 pm

1 stop14h 30m

$421

San JoséBuenos Aires

SJO - AEP

SJOAEP

San José Juan Santamaria Intl

mar. 11/18

5:00 pm-7:55 am

1 stop11h 55m

Buenos Aires Jorge Newbery

mar. 11/25

9:00 am-7:40 pm

1 stop13h 40m

$441

San JoséBuenos Aires

SJO - AEP

SJOAEP

San José Juan Santamaria Intl

mar. 11/18

8:55 pm-5:20 pm

1 stop17h 25m

Buenos Aires Jorge Newbery

vie. 11/21

6:20 pm-7:40 pm

1 stop28h 20m

$502

San JoséBuenos Aires

SJO - AEP

SJOAEP

San José Juan Santamaria Intl

jue. 11/13

8:55 pm-5:20 pm

1 stop17h 25m

Buenos Aires Jorge Newbery

vie. 11/21

6:20 pm-7:40 pm

1 stop28h 20m

$541

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from San José 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 typical price of a round-trip flight between San José and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from San José is in May. Flight prices, which tend to average around $535, 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 José during June instead. Flights to Buenos Aires in June, while not as cheap as those in May, still average around $538.

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 José is on a Sunday. momondo users have found tickets for Sunday departures for as low as $561. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Wednesday is $1,001.

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 at noon. Flights from San José to Buenos Aires during this time can be as low as $545. Try not to purchase tickets in the evening because they tend to be around $596. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest San José Juan Santamaria Intl to Buenos Aires flight route?

Fly from San José Juan Santamaria Intl to Buenos Aires Ministro Pistarini for the best San José Juan Santamaria Intl - Buenos Aires flight prices

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 José when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $589 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 José for as low as $553 on momondo.

What cabin class options are available on San José Juan Santamaria Intl to Buenos Aires flights?

There are 2 cabin classes available to choose from on San José Juan Santamaria Intl to Buenos Aires flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have San José to Buenos Aires flight prices changed over time?

As of November 2025, prices for San José to Buenos Aires flights are approximately 6% more expensive when compared to flights at the same time last year.

When to book flights from San José to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from San José to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San José to Buenos Aires (SJO to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San José to Buenos Aires

Best Price Found

$157

Fastest flight time

9h 05m

Direct flights

Mon, Tue, Wed, Fri, Sat and Sun

Airports in Buenos Aires

1 airport
The best one-way flight to Buenos Aires from San José in the past 72 hours is $157. The best round-trip flight deal from San José to Buenos Aires found on momondo in the last 72 hours is $357.
The fastest flight from San José to Buenos Aires takes 9h 05m
Direct flights go from San José to Buenos Aires on Monday, Tuesday, Wednesday, Friday, Saturday and Sunday. The only airline offering direct flights is Avianca.
There is 1 airport near Buenos Aires: Buenos Aires Ministro Pistarini (EZE)
Search flight deals

  • How far is San José Juan Santamaria Intl to Buenos Aires by plane?

    The straight-line distance from San José Juan Santamaria Intl to Buenos Aires is 3505.7 mi. Flights usually cover this in 9h 05m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from San José Juan Santamaria Intl Airport to Buenos Aires?

    Prices for flights from San José Juan Santamaria Intl Airport to Buenos Aires are refreshed on a daily basis.

  • How many operators does momondo search for flights from San José Juan Santamaria Intl Airport to Buenos Aires?

  • How old do you have to be to fly from San José Juan Santamaria Intl Airport to Buenos Aires?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San José Juan Santamaria Intl Airport to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San José to Buenos Aires?

  • What is the most popular airline from San José to Buenos Aires?

Best airlines flying from San José to Buenos Aires

Compare and see reviews for airlines that fly from San José to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
AviancaPriceFrom $352Free CancellationRating
6.6
2,470 reviews
Search Avianca flights
GOLPriceFrom $399Free CancellationRating
7.3
1,122 reviews
Search GOL flights
Copa AirlinesPriceFrom $415Free CancellationRating
7.6
1,561 reviews
Search Copa Airlines flights
LATAM AirlinesPriceFrom $467Free CancellationRating
7.5
1,873 reviews
Search LATAM Airlines flights

  • Avianca Flights From San José to Buenos Aires

    Avianca flies from San José to Buenos Aires around 4 times per week, with 2,470 momondo users rating the airline 6.6/10. The cheapest Avianca deal from San José to Buenos Aires in the last 72 hours was $352 (round-trip), much lower than the average airfare cost of $598 for Avianca flights on this route.

Why use momondo?

Why should I use momondo to find a flight deal from San José to Buenos Aires?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San José to Buenos Aires for you.

Can I find flights from San José to Buenos Aires with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buenos Aires from San José with this policy.

How can momondo help me find flights from San José to Buenos Aires?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Buenos Aires from San José.

I’m not ready to book a flight from San José to Buenos Aires right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San José to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport