King County International Airport - Boeing Field
Seattle, United StatesBFI / KBFI
Regional airport · 63 direct destinations · 2 runways · longest runway 10,007 ft
48 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Seattle → Phoenix
BFI
SeattleKing County International Airport - Boeing Field
SeattleKing County International Airport - Boeing FieldPHXPhoenixPhoenix Sky Harbor International Airport
PhoenixPhoenix Sky Harbor International Airport- Distance
- 1,112 mi
- Estimated flight time
- ~2h 45m
Same local time in Seattle and Phoenix.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
- 1
- flights per day
- 2
- busiest month · Apr
- 1
- quietest month · Oct
- 2 hr 23 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 1Jan2026
- 1Feb
- 1Mar
- 2Apr
- 1May
- 1Jun
- 1Jul
- 1Aug
- 1Sep
- 1Oct2025
- 1Nov
- 1Dec
In December 2025 we saw less traffic at Seattle in general than usual; compare that month with care.
Airlines
Who flies it
Southwest Airlinesall year
UPS Airlineswinter
Through the day
Departure times
Local time in Seattle. Most departures between 09:00 and 12:00.
- 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
- 0.2Mon
- 0.4Tue
- 0.5Wed
- 0.6Thu
- 0.6Fri
- 0.2Sat
- 0.2Sun
Fleet
Aircraft observed
- Boeing 737 MAX 8B38M17%
- C5607%
- Cessna Citation LatitudeC68A4%
- Boeing 767-300B7633%
- Dassault Falcon 7XFA7X3%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1 | 10 |
|
| February 2026 | 1 | 13 |
|
| March 2026 | 1 | 14 |
|
| April 2026 | 2 | 5 |
|
| May 2026 | 1 | 15 |
|
| June 2026 | 1 | 10 |
|
| July 2026 | 1 | 9 |
|
| August 2026 | 1 | 17 |
|
| September 2026 | 1 | 16 |
|
| October 2025 | 1 | 10 |
|
| November 2025 | 1 | 10 |
|
| December 2025 | 1 | 11 |
|
Airlines observed on this route
From observed callsign routes on BFI-PHX - 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 Seattle: 63.
- Direct destinations observed from Phoenix: 145.
The airports on this route
Phoenix Sky Harbor International Airport
Phoenix, United StatesPHX / KPHX
International hub · 145 direct destinations · 3 runways · longest runway 11,490 ft
80 °F · ClearSource: 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 Seattle to Phoenix
The observed direct connection between King County International Airport - Boeing Field (BFI) and Phoenix Sky Harbor International Airport (PHX) covers approximately 1,112 mi. The estimated flight time is around 2h 45m. Southwest Airlines and UPS Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Seattle from Phoenix by air?
- The great-circle distance between King County International Airport - Boeing Field and Phoenix Sky Harbor International Airport is approximately 1,112 mi.
- How long is the flight from Seattle to Phoenix?
- Based on the distance, the estimated flight time is about 2h 45m. This is an estimate, not a schedule.
- Is there a direct connection from Seattle to Phoenix?
- Yes, a direct connection between BFI and PHX has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Southwest Airlines and UPS Airlines.
- How often is there a flight from Seattle to Phoenix?
- On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 140 observed flights. Mainly Southwest Airlines, UPS Airlines. That is an observation, not a timetable.
- What is the current time difference between Seattle and Phoenix?
- Same local time in Seattle and Phoenix.
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.