Flights Boston → Santiago
As of October 2026, economy flights from Boston to Santiago have a typical range USD 253–1393, median USD 707. Full range across all 160 offers: USD 253–9987. We analyzed 160 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: Boston → Santiago
Based on 160 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Boston → Santiago
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Delta | Included | USD 70 | — |
| LATAM Airlines | Included | USD 70 | — |
| United Airlines | Included | USD 70 | — |
| American Airlines | Included | USD 35 | — |
| JetBlue | Included | USD 90 | — |
| Copa | Included | USD 40 | — |
| Air Canada | Included | USD 30 | — |
| Avianca | Included | USD 30 | — |
| 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 Boston to Santiago cost?
Based on 160 offers · October 2026
Boston to Santiago flights ranged from USD 253 to USD 9987 across 160 offers analyzed in October 2026. The chart below shows how prices distributed across all 160 offers.
These 160 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 359 and USD 853
What hidden fees do Boston to Santiago flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Boston to Santiago routes. The breakdown below is based on 160 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| DL | 65 | 12% |
| LA | 66 | 8% |
| UA | 51 | 5% |
| AA | 57 | 11% |
| B6 | 55 | 5% |
| CM | 45 | 7% |
| AC | 35 | 2% |
| AV | 19 | 1% |
| TK | 10 | 0% |
LATAM Airlines: base ~USD 676 + fees USD 66 = ~USD 742 total. Turkish Airlines: base ~USD 4014 + fees USD 10 = ~USD 4024 total.
LATAM Airlines's USD 66 ancillary fees narrow the gap with Turkish Airlines's lower-fee model — the USD 3338 base difference shrinks to USD 3282 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 6.6x 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 Boston to Santiago?
10 airlines flew Boston to Santiago 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.
Even on the cheapest airline (American), fares ranged USD 259–274 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 American | 8 | 259–274 | 259 | n/a |
 Delta Air Lines | 27 | 253–955 | 475 | 65 (14%) |
 American Airlines | 18 | 475–588 | 475 | 57 (12%) |
 Copa Airlines | 4 | — | 662 | 45 (7%) |
 United Airlines | 11 | 305–1617 | 726 | 51 (7%) |
 LATAM Airlines | 71 | 253–1276 | 742 | 66 (9%) |
 B6 | 4 | 475–2071 | 770 | 55 (7%) |
 Air Canada | 8 | 826–2736 | 1070 | 35 (3%) |
 Avianca | 7 | 826–2509 | 1241 | 19 (1%) |
 Turkish Airlines | 2 | 2563–5485 | 4024 | 10 (0%) |
Where do the best Boston → Santiago prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from travel agency 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: Boston to Santiago flights
- Full-service carriers on Boston–Santiago cost 1.4x more than budget airlines (USD 1075 vs USD 770 median; overall median USD 707).
- LA charges 6.6x more in ancillary fees than TK — USD 66 vs USD 10 avg per booking.
- The same route priced USD 598 apart depending on where it was booked — the lowest median was USD 259. 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 Boston to Santiago cost?
- Based on 160 offers analyzed, Boston to Santiago flights range from USD 253 to USD 9987, with a median price of USD 707. Search for your specific dates →
- What hidden fees should I expect on Boston to Santiago flights?
- On average, ancillary fees (bags, seat selection) add USD 58 to the base fare on Boston to Santiago flights. See itemized fees for your itinerary →
- Which airline is cheapest on Boston to Santiago including all fees?
- American has the lowest median fare on Boston to Santiago at USD 259 (median across 8 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Boston–Santiago 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 259. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Boston to Santiago routes?
- Boston to Santiago has 10 airlines competing, creating a price range from USD 253 to USD 9987 across 160 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
10 airlines compete on this route — we check every one
Find flights for my datesNew route — be among the first to track this itinerary
Building with flight data? Power your app or agent with LetsFG
The same multi-source search behind this page — every airline and the major booking sites, deduplicated and ranked — is available to your app or AI agent. Natural-language or structured queries, live prices, zero price bias.
Try the free sandbox — no card →Free sandbox, instant fake results · email for a key · Bearer-token auth · MCP, Python & JS SDKs · letsfg.co/developers