The flight time from Boise to Seattle is 1 hour, 35 minutes. See Data as Tables

Average Timeline

Leaves BOI Boise, ID 4 minutes early.
11 minutes taxiing out
1 hour, 15 minutes in the air
7 minutes taxiing in
Arrives SEA Seattle, WA 9 minutes early.

Flight Reliability By Airline ?


Flight Summary

The flight time from Boise to Seattle is 1 hour, 35 minutes. The time spent in the air is 1 hour, 15 minutes.

The flight distance from Boise to Seattle is 399 Miles.

Reverse Journey

Seattle to Boise
1 hour, 21 minutes

Flight Time By Airline ?

1h 31m
1h 37m
Taxiing Out
Air Time
Taxiing In

Flight Time by Time of Day ?

12AM06AM12PM06PM 30m1h1h 30m
Taxiing Out
Air Time
Taxiing In

Flights By Time of Day ?


Flights Per Week



399 Miles

Flights By Month ?


Flights By Day of Week ?


Flights By Airline ?
(Per Week)


Frequently Asked Questions

How far is Boise from Seattle by plane?

The distance from Boise to Seattle by plane is 399 Miles. This is the air distance on the most direct route taken by the vast majority of flights.

How long is the flight from Boise to Seattle?

The flight time from Boise to Seattle is 1 hour, 35 minutes. The time spent in the air is 1 hour, 15 minutes. These numbers are averages. In reality, it varies by airline with Delta being the fastest taking 1 hour, 31 minutes, and Alaska the slowest taking 1 hour, 37 minutes.

What airlines fly from Boise to Seattle?

Delta and Alaska are the airlines with direct flights from Boise to Seattle.

Does Southwest fly from Boise to Seattle?

Southwest does not fly from Boise (BOI) to Seattle (SEA). 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 Boise 4 minutes early
Taxi Out Time 11 minutes
In the Air 75 minutes
Taxiing In 7 minutes
Arrives Seattle 9 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 Boise to Seattle, Alaska is 87% reliable, which means that Alaska flights are on time 87% of the time, and cancelled or delayed the remaining time.

Airline Normal Flights Arrival Delayed* Flight Cancelled
Delta 91% 8% 1%
Alaska 87% 10% 3%

Flight Time By Airline Flight Time By Airline Chart

Each airline takes a different amount of time to fly between Boise and Seattle, 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
Delta 12 70 7 91
Alaska 10 78 7 97

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
6am 1.38
5pm 0.91
11am 0.58
12pm 0.89
10am 0.99
1pm 1.27
4pm 1.02
9pm 0.31
10pm 0.01
8am 1.24
7am 0.68
3pm 1.06
6pm 0.44
2pm 0.31
9am 0.7
8pm 0.27
7pm 0.72

Flights By Month Flights By Month Chart

The quantity of flights from Boise to Seattle 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 501
February 497
March 511
April 200
May 203
June 253
July 372
August 424
September 409
October 450
November 474
December 505

Flights By Day Of Week Flights By Day of Week Chart

The quantity of flights from Boise to Seattle 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 13.48
Tuesday 12.98
Wednesday 12.88
Thursday 13.37
Friday 13.67
Saturday 12.69
Sunday 13.21

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
Alaska 1
Delta 1

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
6am 12 73 7 95
5pm 10 71 6 90
11am 10 77 7 95
12pm 10 76 6 93
10am 10 81 8 103
1pm 10 75 6 92
4pm 9 79 7 96
9pm 13 86 7 107
10pm 12 67 6 86
8am 15 73 8 99
7am 10 74 6 92
3pm 12 72 7 92
6pm 10 76 6 93
2pm 9 74 6 92
9am 10 78 6 94
8pm 14 84 9 111
7pm 12 77 6 98
* Delayed more than 20 minutes.
All data above is a median or mean as appropriate.