Flights Santiago → Buenos Aires
As of October 2026, economy flights from Santiago to Buenos Aires have a typical range USD 355–1235, median USD 835. Full range across all 254 offers: USD 226–1693. We analyzed 254 offers from 10 airlines in a single price check.
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Santiago → Buenos Aires
Based on 254 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Santiago → Buenos Aires
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Aerolíneas Argentinas | Included | Included | — |
| JetSmart | USD 10 | USD 25 | — |
| KLM | Included | USD 35 | — |
| Sky Airline | USD 10 | USD 22 | — |
| LATAM Airlines | Included | USD 40 | — |
| Turkish Airlines | Included | Included | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Santiago to Buenos Aires cost?
Based on 254 offers · October 2026
Santiago to Buenos Aires flights ranged from USD 226 to USD 1693 across 254 offers analyzed in October 2026. The chart below shows how prices distributed across all 254 offers.
These 254 offers (October 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 533 and USD 1144
What hidden fees do Santiago to Buenos Aires flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Santiago to Buenos Aires routes. The breakdown below is based on 254 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| AR | 10 | 2% |
| JA | 43 | 10% |
| KL | 47 | 7% |
| H2 | 37 | 6% |
| LA | 55 | 6% |
| TK | 10 | 2% |
KLM: base ~USD 336 + fees USD 47 = ~USD 383 total. Turkish Airlines: base ~USD 613 + fees USD 10 = ~USD 623 total.
KLM's USD 47 ancillary fees narrow the gap with Turkish Airlines's lower-fee model — the USD 277 base difference shrinks to USD 240 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.LA charges 5.5x more in ancillary fees than TK on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Santiago to Buenos Aires?
10 airlines flew Santiago to Buenos Aires in this dataset. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 KLM | 1 | — | 259 | n/a |
 JetSMART | 6 | 237–309 | 268 | n/a |
 WJ | 1 | — | 307 | n/a |
 Aerolíneas Argentinas | 18 | 295–1313 | 369 | 10 (3%) |
 KLM | 5 | 323–1181 | 383 | 47 (12%) |
 JetSMART | 19 | 297–618 | 458 | 43 (9%) |
 Sky Airline | 8 | 331–1015 | 581 | 37 (6%) |
 Turkish Airlines | 4 | 608–644 | 623 | 10 (2%) |
 LATAM | 7 | 536–730 | 692 | n/a |
 LATAM Airlines | 185 | 518–1276 | 1067 | 55 (5%) |
Where do the best Santiago → Buenos Aires prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Santiago to Buenos Aires flights
- Santiago–Buenos Aires had 254 offers analyzed. Median price: USD 835.
- LA charges 5.5x more in ancillary fees than TK — USD 55 vs USD 10 avg per booking.
- The same route priced USD 549 apart depending on where it was booked — the lowest median was USD 318. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Santiago to Buenos Aires cost?
- Based on 254 offers analyzed, Santiago to Buenos Aires flights range from USD 226 to USD 1693, with a median price of USD 835. Search for your specific dates →
- What hidden fees should I expect on Santiago to Buenos Aires flights?
- On average, ancillary fees (bags, seat selection) add USD 49 to the base fare on Santiago to Buenos Aires flights. See itemized fees for your itinerary →
- Which airline is cheapest on Santiago to Buenos Aires including all fees?
- KLM has the lowest median fare on Santiago to Buenos Aires at USD 259 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Santiago–Buenos Aires flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 318. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Santiago to Buenos Aires routes?
- Santiago to Buenos Aires has 10 airlines competing, creating a price range from USD 226 to USD 1693 across 254 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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