San Francisco International Airport
San Francisco, United StatesSFO / KSFO
International hub · 130 direct destinations · 4 runways · longest runway 11,870 ft
73 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
San Francisco → Boston
SFO
San FranciscoSan Francisco International Airport
San FranciscoSan Francisco International AirportBOSBostonBoston Logan International Airport
BostonBoston Logan International Airport- Distance
- 2,697 mi
- Estimated flight time
- ~5h 55m
Boston is currently 3 hours ahead of San Francisco.
Observed nonstop
How often does this route fly?
Frequency
Throughout the day
On average around 11 flights a day, observed from October 2025 to September 2026.
- 11
- flights per day
- 14
- busiest month · Jun
- 8
- quietest month · Jan
- 5 hr 3 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 8Jan2026
- 9Feb
- 9Mar
- 11Apr
- 12May
- 14Jun
- 13Jul
- 14Aug
- 11Sep
- 12Oct2025
- 10.5Nov
- 10Dec
Airlines
Who flies it
United Airlinesall year
JetBlueall year
Delta Air Linesall year
Alaska Airlineswinter
Through the day
Departure times
Local time in San Francisco. Most departures between 11:00 and 14:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 11.4Mon
- 10.8Tue
- 10.2Wed
- 10.6Thu
- 11.8Fri
- 10.7Sat
- 10.6Sun
Fleet
Aircraft observed
- Airbus A321neoA21N30%
- Boeing 737 MAX 9B39M28%
- Airbus A321A32125%
- Boeing 757-200B75211%
- Boeing 737-900B7391%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 8 | 246 |
|
| February 2026 | 9 | 231 |
|
| March 2026 | 9 | 263 |
|
| April 2026 | 11 | 315 |
|
| May 2026 | 12 | 341 |
|
| June 2026 | 14 | 427 |
|
| July 2026 | 13 | 398 |
|
| August 2026 | 14 | 407 |
|
| September 2026 | 11 | 341 |
|
| October 2025 | 12 | 360 |
|
| November 2025 | 10.5 | 314 |
|
| December 2025 | 10 | 279 |
|
Airlines observed on this route
From observed callsign routes on SFO-BOS - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from San Francisco: 130.
- Direct destinations observed from Boston: 154.
The airports on this route
Boston Logan International Airport
Boston, United StatesBOS / KBOS
Major airport · 154 direct destinations · 6 runways · longest runway 10,082 ft
68 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from San Francisco to Boston
The observed direct connection between San Francisco International Airport (SFO) and Boston Logan International Airport (BOS) covers approximately 2,697 mi. The estimated flight time is around 5h 55m. Alaska Airlines, Delta Air Lines, JetBlue and United Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is San Francisco from Boston by air?
- The great-circle distance between San Francisco International Airport and Boston Logan International Airport is approximately 2,697 mi.
- How long is the flight from San Francisco to Boston?
- Based on the distance, the estimated flight time is about 5h 55m. This is an estimate, not a schedule.
- Is there a direct connection from San Francisco to Boston?
- Yes, a direct connection between SFO and BOS has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Alaska Airlines, Delta Air Lines, JetBlue and United Airlines.
- How often is there a flight from San Francisco to Boston?
- On average around 11 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 3,922 observed flights. Mainly United Airlines, JetBlue, Delta Air Lines. That is an observation, not a timetable.
- What is the current time difference between San Francisco and Boston?
- Boston is currently 3 hours ahead of San Francisco.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.