Boston (BOS) to Santiago (STI)
Flight time
≈ 3h 58m
Bearing
179° S
Boston (BOS) to Santiago (STI) is 1,586 miles (2,553 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BOS–STI
Filed traffic dataIn May 2026, JetBlue Airways was the only carrier flying nonstop BOS–STI; the Airbus A321 was the most common aircraft at 57% of departures; flights ran 81% full.
Departures
84
May 2026
Seats
15,432
both directions
Passengers
12,515
both directions
Load factor
81.1%
RPM ÷ ASM
Who flies BOS–STI?
JetBlue Airways was the only carrier to fly nonstop BOS–STI in May 2026 (84 departures).
- B6
84 departures · 15,432 seats
Share of departures100.0%81.1%
Load
What plane flies BOS–STI?
In May 2026, the Airbus A321 flew 57% of BOS–STI departures — more than any other aircraft type.
- Airbus A321
48 departures · 84.4% load
57.1% - Airbus A320
36 departures · 75.7% load
42.9%
How has BOS–STI traffic changed?
Nonstop BOS–STI departures fell from 102 in June 2025 to 84 in May 2026.
Monthly nonstop BOS–STI traffic, trailing 12 months through May 2026. Bars scale to the busiest month; months with no filed service show as zero.
June 2025
102 departures · 14,025 passengers
83.7%
Load
July 2025
126 departures · 17,560 passengers
90.4%
Load
August 2025
124 departures · 16,270 passengers
86.6%
Load
September 2025
63 departures · 9,372 passengers
89.1%
Load
October 2025
63 departures · 9,197 passengers
87.5%
Load
November 2025
60 departures · 9,180 passengers
87.6%
Load
December 2025
101 departures · 13,257 passengers
74.0%
Load
January 2026
120 departures · 16,513 passengers
79.3%
Load
February 2026
88 departures · 12,250 passengers
74.1%
Load
March 2026
68 departures · 10,128 passengers
84.5%
Load
April 2026
78 departures · 11,571 passengers
82.3%
Load
May 2026
84 departures · 12,515 passengers
81.1%
Load
By direction
Each direction is filed separately — they rarely match.
BOS → STI
81.5% full
42 departures · 6,287 passengers
STI → BOS
80.7% full
42 departures · 6,228 passengers
Nonstop BOS–STI traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through May 2026; filings from 2025. Public domain (US Government work).
The airports
Santiago
DO
Cibao International Airport
Coordinates
19.40°N, 70.60°W
Hemisphere
N · W
Frequently asked
How far is Boston (BOS) from Santiago (STI)?
BOS to STI is 1,586 miles (2,553 km / 1,379 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOS to STI?
A nonstop covers the 1,586-mile great-circle distance in roughly 3h 58m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOS–STI?
In May 2026, the Airbus A321 flew the largest share of departures (57.1%), followed by the Airbus A320 (42.9%).
What mileage do I earn flying BOS–STI?
Distance-based programs credit off the 1,586-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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