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 July 2026, JetBlue Airways operated the most departures, one of 2 carriers flying nonstop BOS–STI; the Airbus A321 was the most common aircraft at 96% of departures; flights ran 88% full.
Departures
121
July 2026
Seats
24,065
both directions
Passengers
21,113
both directions
Load factor
87.7%
RPM ÷ ASM
Who flies BOS–STI?
JetBlue Airways operated the most nonstop BOS–STI departures in July 2026 (120), one of 2 carriers on the route.
- B6
120 departures · 23,886 seats
Share of departures99.2%87.7%
Load
- UA
1 departures · 179 seats
Share of departures0.8%92.2%
Load
What plane flies BOS–STI?
In July 2026, the Airbus A321 flew 96% of BOS–STI departures — more than any other aircraft type.
- Airbus A321
116 departures · 87.7% load
95.9% - Airbus A320
3 departures · 81.9% load
2.5% - Airbus A321neo
1 departures · 98.0% load
0.8% - Boeing 737 MAX 9
1 departures · 92.2% load
0.8%
How has BOS–STI traffic changed?
Nonstop BOS–STI departures fell from 124 in August 2025 to 121 in July 2026.
Monthly nonstop BOS–STI traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
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
June 2026
116 departures · 16,830 passengers
77.2%
Load
July 2026
121 departures · 21,113 passengers
87.7%
Load
By direction
Each direction is filed separately — they rarely match.
STI → BOS
81.2% full
62 departures · 9,995 passengers
BOS → STI
94.5% full
59 departures · 11,118 passengers
Nonstop BOS–STI traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 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 July 2026, the Airbus A321 flew the largest share of departures (95.9%), followed by the Airbus A320 (2.5%).
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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