The flight time from Boston to San Francisco is 6 hours, 33 minutes. See Data as Tables
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Average Timeline

Leaves BOS Boston, MA 2 minutes early.
18 minutes taxiing out
6 hours, 4 minutes in the air
8 minutes taxiing in
Arrives SFO San Francisco, CA 7 minutes early.

Flight Reliability By Airline ?


Flight Summary

The flight time from Boston to San Francisco is 6 hours, 33 minutes. The time spent in the air is 6 hours, 4 minutes.

The flight distance from Boston to San Francisco is 2704 Miles.

Reverse Journey

San Francisco to Boston
5 hours, 31 minutes

Flight Time By Airline ?

6h 28m
6h 36m
6h 39m
6h 40m
Taxiing Out
Air Time
Taxiing In

Flight Time by Time of Day ?

Taxiing Out
Air Time
Taxiing In

Flights By Time of Day ?


Flights Per Week



2704 Miles

Flights By Month ?


Flights By Day of Week ?


Flights By Airline ?
(Per Week)


Frequently Asked Questions

How far is Boston from San Francisco by plane?

The distance from Boston to San Francisco by plane is 2704 Miles. This is the air distance on the most direct route taken by the vast majority of flights.

How long is the flight from Boston to San Francisco?

The flight time from Boston to San Francisco is 6 hours, 33 minutes. The time spent in the air is 6 hours, 4 minutes. These numbers are averages. In reality, it varies by airline with United being the fastest taking 6 hours, 28 minutes, and Delta the slowest taking 6 hours, 40 minutes.

What airlines fly from Boston to San Francisco?

United, Alaska, Delta, and JetBlue are the airlines with direct flights from Boston to San Francisco.

Does Southwest fly from Boston to San Francisco?

Southwest does not fly from Boston (BOS) to San Francisco (SFO). Keep in mind that Southwest may fly to other nearby airports, as they will often fly into smaller airpors instead of larger ones. This is because the costs are often lower to fly into smaller airports, and they pass the savings on to you.

Tables and Explanations

Data Source

Our information is computed from the latest available data from the US Department of Transportation.

Average Timeline Timeline Chart

The average timeline contains the median time a flight spends in 3 stages. The first of these three stages is taxiing out which includes the time from the flight leaving the gate to taking off. The second stage is in the air, which includes the time spent from the flight leaving the ground to touching back down at the end of it's journey. The last stage is taxiing in, which is from when the flight touches down to the flight arriving at it's gate.

The average timeline also estimates on average of when the flight will leave and arrive relative to it's stated departure time.

Leaves Boston 2 minutes early
Taxi Out Time 18 minutes
In the Air 364 minutes
Taxiing In 8 minutes
Arrives San Francisco 7 minutes early

Flight Reliability Reliability Chart

The reliability of an airline measures how often the airline's flights on this route are cancelled or delayed more than 20 minutes. For example, from Boston to San Francisco, Alaska is 78% reliable, which means that Alaska flights are on time 78% of the time, and cancelled or delayed the remaining time.

Airline Normal Flights Arrival Delayed* Flight Cancelled
Delta 81% 19% 0%
United 80% 19% 1%
Alaska 78% 20% 2%
JetBlue 78% 22% 0%

Flight Time By Airline Flight Time By Airline Chart

Each airline takes a different amount of time to fly between Boston and San Francisco, this is due to different operational factors on the ground, as well as scheduling of planes. Each airline's flight time is split into three stages which are described above in the "Average Timeline" section. There are also miscellaneous operational issues which are included in the below total but are not accounted for in one of the three stages.

Airline Taxiing Out
In the Air
Taxiing In
United 16 361 7 388
JetBlue 19 365 9 396
Alaska 22 365 6 399
Delta 22 365 8 400

Flights By Time of Day Flight Time By Day Chart

This one is pretty self explanatory, it represents the number of flights that leave the gate in a given hour of the day. The tricky thing here is that this is normally not a whole number since it is an average over 52 weeks. Partial numbers may indicate that a flight may be seasonal or may take off at different times due to different operational factors.

Time Count
3pm 1.85
6am 1.95
1pm 0
1am 0
9am 1.19
8am 1.53
10am 0.58
7pm 0.18
6pm 2.16
11am 0.69
8pm 0.47
4pm 0.1
5pm 1.02
9pm 0.9
7am 1.07

Flights By Month Flights By Month Chart

The quantity of flights from Boston to San Francisco that take off in a given month of the year. This number changes because some flights are seasonal, and almost all flights have uneven demand througout the year.

Month Count
January 387
February 340
March 402
April 430
May 428
June 427
July 466
August 500
September 416
October 456
November 398
December 379

Flights By Day Of Week Flights By Day of Week Chart

The quantity of flights from Boston to San Francisco that take off on a given day of the week. Some routes only have enough demand to sustain a few trips a week, while others have many flights a day. This number is also an average across the year, and hence may not be a whole number.

Day Count
Monday 14.29
Tuesday 13.88
Wednesday 14.21
Thursday 14.63
Friday 14.48
Saturday 11.58
Sunday 13.63

Flight per Airline (per Week) Flights By Airline Chart

How many times an airline flies this route in a week. Different factors play into how often a carrier chooses to fly a given route including it's need to connect disparate routes, and demand.

Airline Flights per Week
United 1
JetBlue 1
Alaska 0
Delta 0

Flight Time By Time of Day Flight Time by Time of Day Chart

The total flight time varies by each hour of the day due to factors such as airport traffic. More flights leaving an airport may cause higher taxi in or taxi out times. See the description of the average timeline above for a deeper discussion of each of these times.

Time Taxi Out
In the Air
Taxi In
3pm 17 365 8 393
6am 18 365 8 393
1pm 11 372 7 390
1am 13 355 2 370
9am 17 361 9 391
8am 19 364 8 394
10am 17 363 10 394
7pm 19 365 8 395
6pm 21 364 9 397
11am 15 363 7 387
8pm 16 356 7 382
4pm 16 370 6 394
5pm 21 367 7 402
9pm 17 362 8 390
7am 22 363 7 396
* Delayed more than 20 minutes.
All data above is a median or mean as appropriate.