San Juan to Buenos Aires flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for San Juan to Buenos Aires is €250 (checked on 31 Oct 2026).
Your next trip, last seen at €250
Lowest observedWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €250, departing 30 Dec 2026 (Last checked: 31 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 155Check live prices for this route
- Airlines seen
- American Airlines, Arajet, Avianca, Copa Airlines, Frontier Airlines, United Airlines
- Typical journey time
- 10h 06m
About this route
Explore the fares we observed from San Juan to Buenos Aires. Prices move often, so pick your dates to see the latest options.
- Route distance
- 5,958 km
- Typical journey time
- 10h 06m
- Seen on fares with a connection
- American Airlines, Avianca, Copa Airlines, Arajet
- Alternative airports
- SIG, AEP
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- Fernando Luis Ribas Dominicci Airport (SIG) → San Juan, city gazetteer reference point (18.4663, -66.1057): ≈ 1 km.
- Luis Munoz Marin International Airport (SJU) → San Juan, city gazetteer reference point (18.4663, -66.1057): ≈ 11 km.
- Aeroparque Jorge Newbery (AEP) → Buenos Aires, city gazetteer reference point (-34.6084, -58.3732): ≈ 7 km.
- Ezeiza International Airport - Ministro Pistarini (EZE) → Buenos Aires, city gazetteer reference point (-34.6084, -58.3732): ≈ 28 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from San Juan to Buenos Aires: December 2026, from €250 (checked 31 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| November 2026 | €334 | 10 |
| December 2026 | €250 | 31 |
| January 2027 | €370 | 31 |
| February 2027 | €334 | 28 |
| March 2027 | €298 | 31 |
| April 2027 | €250 | 24 |
Lowest fare by day of the week
Cheapest day of the week from San Juan to Buenos Aires: Monday, from €250 (checked 31 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €250 | 22 |
| Tuesday | €334 | 22 |
| Wednesday | €250 | 22 |
| Thursday | €274 | 22 |
| Friday | €381 | 22 |
| Saturday | €381 | 23 |
| Sunday | €334 | 22 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from San Juan to Buenos Aires by days until departure (31 to 60 days): €250 (checked 31 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 8 to 30 days | €334 | 15 |
| 31 to 60 days | €250 | 30 |
| 61 days or more | €250 | 110 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from San Juan to Buenos Aires: Arajet, from €250 (checked 31 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Arajet | €250Apr 21, 2027 | 3 |
| Avianca | €381Dec 24, 2026 | 3 |
| Copa Airlines | €382Dec 24, 2026 | 3 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from San Juan to Buenos Aires?
The lowest fare Routavio has observed is €250, found on 31 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from San Juan to Buenos Aires?
Cheapest month from San Juan to Buenos Aires: December 2026, from €250 (checked 31 Oct 2026).
Are there direct flights from San Juan to Buenos Aires?
Our data holds no non-stop flight from San Juan to Buenos Aires. The fares on this page include at least one stop.
Which airlines fly from San Juan to Buenos Aires?
Routavio has seen these carriers on the route: American Airlines, Arajet, Avianca, Copa Airlines, Frontier Airlines, United Airlines.
Which day of the week is cheapest from San Juan to Buenos Aires?
Cheapest day of the week from San Juan to Buenos Aires: Monday, from €250 (checked 31 Oct 2026).
Which airline has the lowest fare from San Juan to Buenos Aires?
Cheapest airline from San Juan to Buenos Aires: Arajet, from €250 (checked 31 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.