Boston (BOS) to San Francisco (SFO)
Flight time
≈ 6h 12m
Bearing
281° W
Boston (BOS) to San Francisco (SFO) is 2,697 miles (4,341 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies BOS–SFO
Filed traffic dataIn July 2026, JetBlue Airways operated the most departures, one of 4 carriers flying nonstop BOS–SFO; the Boeing 737 MAX 9 was the most common aircraft at 37% of departures; flights ran 90% full.
Departures
983
July 2026
Seats
170,819
both directions
Passengers
153,538
both directions
Load factor
89.9%
seat-miles filled
Who flies BOS–SFO?
JetBlue Airways operated the most nonstop BOS–SFO departures in July 2026 (400), one of 4 carriers on the route.
- B6
400 departures · 63,447 seats
Share of departures40.7%90.1%
Load
- UA
376 departures · 67,304 seats
Share of departures38.3%90.0%
Load
- DL
206 departures · 39,966 seats
Share of departures21.0%89.4%
Load
- AA
1 departures · 102 seats
Share of departures0.1%97.1%
Load
What plane flies BOS–SFO?
In July 2026, the Boeing 737 MAX 9 flew 37% of BOS–SFO departures — more than any other aircraft type.
- Boeing 737 MAX 9
364 departures · 90.1% load
37.0% - Airbus A321
312 departures · 90.2% load
31.7% - Airbus A321neo
294 departures · 89.5% load
29.9% - Boeing 737-900ER
12 departures · 86.8% load
1.2% - Boeing 767-300
1 departures · 96.8% load
0.1%
How has BOS–SFO traffic changed?
Nonstop BOS–SFO departures rose from 861 in August 2025 to 983 in July 2026.
Monthly nonstop BOS–SFO traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
861 departures · 136,482 passengers
91.3%
Load
September 2025
816 departures · 119,584 passengers
84.1%
Load
October 2025
846 departures · 128,590 passengers
87.3%
Load
November 2025
700 departures · 100,794 passengers
82.0%
Load
December 2025
703 departures · 102,472 passengers
83.4%
Load
January 2026
594 departures · 83,270 passengers
81.5%
Load
February 2026
524 departures · 76,170 passengers
83.4%
Load
March 2026
645 departures · 97,610 passengers
85.1%
Load
April 2026
758 departures · 111,624 passengers
84.4%
Load
May 2026
879 departures · 131,340 passengers
85.8%
Load
June 2026
997 departures · 144,881 passengers
83.4%
Load
July 2026
983 departures · 153,538 passengers
89.9%
Load
By direction
Each direction is filed separately — they rarely match.
SFO → BOS
89.3% full
492 departures · 76,310 passengers
BOS → SFO
90.5% full
491 departures · 77,228 passengers
Nonstop BOS–SFO 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). Load factor is RPM ÷ ASM (revenue passenger-miles ÷ available seat-miles).
The airports
Frequently asked
How far is Boston (BOS) from San Francisco (SFO)?
BOS to SFO is 2,697 miles (4,341 km / 2,344 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOS to SFO?
A nonstop covers the 2,697-mile great-circle distance in roughly 6h 12m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOS–SFO?
In July 2026, the Boeing 737 MAX 9 flew the largest share of departures (37.0%), followed by the Airbus A321 (31.7%).
What mileage do I earn flying BOS–SFO?
Distance-based programs credit off the 2,697-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
Trip reports on YouTube
Fliers post trip reports from this route to YouTube. These three were matched automatically from public YouTube listings — The Frequent Flier does not host, review, or endorse them.
Jeb Brooks
Delta Airlines BRAND NEW A321neo First Class from Boston to SFO
11:25 · May 2022
QFS Aviation
TRIP REPORT | United Airlines - 757 200 - Boston (BOS) to San Francisco (SFO) | First Class
38:57 · Aug 2018
Genki's Travels
Delta Airlines | A321neo | First Class | San Francisco (SFO) to Boston (BOS) | Trip Report
22:36 · Jun 2022
Source: YouTube. Titles, thumbnails, and channel names come from YouTube. Playing a video loads the YouTube player, and using it means you agree to the YouTube Terms of Service; the Google Privacy Policy applies.
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