Louisville Muhammad Ali International Airport
Louisville, United StatesSDF / KSDF
Regional airport · 142 direct destinations · 3 runways · longest runway 11,886 ft
52 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Louisville → Seattle
SDF
LouisvilleLouisville Muhammad Ali International Airport
LouisvilleLouisville Muhammad Ali International AirportBFISeattleKing County International Airport - Boeing Field
SeattleKing County International Airport - Boeing Field- Distance
- 1,941 mi
- Estimated flight time
- ~4h 25m
Seattle is currently 3 hours behind Louisville.
Observed nonstop
How often does this route fly?
Frequency
A couple of times a day
On average around 2 flights a day, observed from October 2025 to September 2026.
- 2
- flights per day
- 3
- busiest month · Dec
- 2
- quietest month · Oct
- 4 hr 16 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 2Jan2026
- 2Feb
- 2Mar
- 2Apr
- 2May
- 2Jun
- 2Jul
- 2Aug
- 2Sep
- 2Oct2025
- 2Nov
- 3Dec
Airlines
Who flies it
UPS Airlinesall year
Through the day
Departure times
Local time in Louisville. Most departures between 15:00 and 18:00.
- 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
- 0.1Mon
- 1.9Tue
- 2Wed
- 1.9Thu
- 2.2Fri
- 2.4Sat
- 1.8Sun
Fleet
Aircraft observed
- Boeing 767-300B76388%
- Airbus A300-600A3064%
- Boeing 757-200B7523%
- McDonnell Douglas MD-11MD113%
- Cessna Citation LatitudeC68A0%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 2 | 42 |
|
| February 2026 | 2 | 46 |
|
| March 2026 | 2 | 49 |
|
| April 2026 | 2 | 48 |
|
| May 2026 | 2 | 48 |
|
| June 2026 | 2 | 48 |
|
| July 2026 | 2 | 53 |
|
| August 2026 | 2 | 52 |
|
| September 2026 | 2 | 55 |
|
| October 2025 | 2 | 55 |
|
| November 2025 | 2 | 53 |
|
| December 2025 | 3 | 83 |
|
Airlines observed on this route
From observed callsign routes on SDF-BFI - 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 Louisville: 142.
- Direct destinations observed from Seattle: 63.
The airports on this route
King County International Airport - Boeing Field
Seattle, United StatesBFI / KBFI
Regional airport · 63 direct destinations · 2 runways · longest runway 10,007 ft
69 °F · Partly cloudySource: METAR observation via the NOAA Aviation Weather Center
About the route from Louisville to Seattle
The observed direct connection between Louisville Muhammad Ali International Airport (SDF) and King County International Airport - Boeing Field (BFI) covers approximately 1,941 mi. The estimated flight time is around 4h 25m. UPS Airlines has been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Louisville from Seattle by air?
- The great-circle distance between Louisville Muhammad Ali International Airport and King County International Airport - Boeing Field is approximately 1,941 mi.
- How long is the flight from Louisville to Seattle?
- Based on the distance, the estimated flight time is about 4h 25m. This is an estimate, not a schedule.
- Is there a direct connection from Louisville to Seattle?
- Yes, a direct connection between SDF and BFI has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: UPS Airlines.
- How often is there a flight from Louisville to Seattle?
- On average around 2 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 632 observed flights. Mainly UPS Airlines. That is an observation, not a timetable.
- What is the current time difference between Louisville and Seattle?
- Seattle is currently 3 hours behind Louisville.
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.