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The flight time from San Juan to Boston is 4 hours, 6 minutes. See Data as Tables

Average Timeline

Leaves SJU San Juan, PR 1 minute early.
13 minutes taxiing out
3 hours, 40 minutes in the air
9 minutes taxiing in
Arrives BOS Boston, MA 5 minutes early.

Flight Reliability By Airline ?

Delta
84%
Spirit
80%
Frontier
78%
JetBlue
73%
Cancelled
Delayed*
Normal

Flight Summary

The flight time from San Juan to Boston is 4 hours, 6 minutes. The time spent in the air is 3 hours, 40 minutes.

The flight distance from San Juan to Boston is 1674 Miles.

Reverse Journey

Boston to San Juan
3 hours, 56 minutes

Flight Time By Airline ?

JetBlue
4h 3m
Spirit
4h 8m
Delta
4h 9m
Frontier
4h 20m
Taxiing Out
Air Time
Taxiing In

Flight Time by Time of Day ?

12AM06AM12PM06PM1h2h3h4h
Taxiing Out
Air Time
Taxiing In

Flights By Time of Day ?
(Average)

12AM06AM12PM06PM0.00.20.40.60.81.0

Flights Per Week

42

Distance

1674 Miles

Flights By Month ?

JFMAMJJASOND050100150200

Flights By Day of Week ?
(Average)

MonTueWedThuFriSatSun0246

Flights By Airline ?
(Per Week)

JetBlue
27
Delta
7
Spirit
4
Frontier
3

Frequently Asked Questions

How far is San Juan from Boston by plane?

The distance from San Juan to Boston by plane is 1674 Miles. This is the air distance on the most direct route taken by the vast majority of flights.

How long is the flight from San Juan to Boston?

The flight time from San Juan to Boston is 4 hours, 6 minutes. The time spent in the air is 3 hours, 40 minutes. These numbers are averages. In reality, it varies by airline with JetBlue being the fastest taking 4 hours, 3 minutes, and Frontier the slowest taking 4 hours, 20 minutes.

What airlines fly from San Juan to Boston?

Delta, Frontier, Spirit, and JetBlue are the airlines with direct flights from San Juan to Boston.

Does Southwest fly from San Juan to Boston?

Southwest does not fly from San Juan (SJU) to Boston (BOS). 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 San Juan 1 minute early
Taxi Out Time 13 minutes
In the Air 220 minutes
Taxiing In 9 minutes
Arrives Boston 5 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 San Juan to Boston, Frontier is 78% reliable, which means that Frontier flights are on time 78% of the time, and cancelled or delayed the remaining time.

Airline Normal Flights Arrival Delayed* Flight Cancelled
Delta 84% 15% 1%
Spirit 80% 17% 3%
Frontier 78% 21% 1%
JetBlue 73% 26% 1%

Flight Time By Airline Flight Time By Airline Chart

Each airline takes a different amount of time to fly between San Juan and Boston, 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
(minutes)
In the Air
(minutes)
Taxiing In
(minutes)
Total
(minutes)
JetBlue 12 220 8 243
Spirit 12 225 7 248
Delta 18 217 11 249
Frontier 17 224 13 260

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
11pm 0.03
6pm 0.15
3am 0.02
3pm 0.41
1pm 0.98
10pm 0.16
11am 0
7am 0.4
1am 0.14
7pm 0.33
2pm 0.6
10am 0.28
6am 0.39
12pm 0.31
8am 0.12
4am 0.01
4pm 0.16
5pm 0.21
8pm 0.23
9pm 0.17
2am 0.05
9am 0.12
5am 0.72

Flights By Month Flights By Month Chart

The quantity of flights from San Juan to Boston 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 196
February 203
March 173
April 179
May 171
June 218
July 238
August 229
September 119
October 121
November 163
December 206

Flights By Day Of Week Flights By Day of Week Chart

The quantity of flights from San Juan to Boston 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 5.85
Tuesday 5.88
Wednesday 6.02
Thursday 6.21
Friday 5.92
Saturday 6.63
Sunday 6.1

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
JetBlue 1
Delta 0
Spirit 0
Frontier 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
(minutes)
In the Air
(minutes)
Taxi In
(minutes)
Total
(minutes)
11pm 13 216 6 236
6pm 12 221 8 246
3am 11 220 6 238
3pm 12 219 9 245
1pm 16 216 11 245
10pm 11 214 6 233
11am 31 217 6 254
7am 15 223 11 252
1am 10 219 8 238
7pm 11 220 7 239
2pm 17 224 9 253
10am 11 219 8 241
6am 13 226 8 249
12pm 12 218 9 241
8am 13 231 6 251
4am 10 219 17 249
4pm 13 226 9 252
5pm 14 226 9 255
8pm 11 219 6 240
9pm 12 218 6 238
2am 10 219 6 241
9am 11 220 8 242
5am 12 222 7 244
* Delayed more than 20 minutes.
All data above is a median or mean as appropriate.