Skip to main content

Route

Dulles → Louisville

IADDullesWashington Dulles International Airport
SDFLouisvilleLouisville Muhammad Ali International Airport
Distance
450 mi
Estimated flight time
~1h 25m

Same local time in Dulles and Louisville.

Observed nonstop

View the reverse route

How often does this route fly?

Frequency

A couple of times a day

On average around 3.25 flights a day, observed from October 2025 to September 2026.

3.3
flights per day
4
busiest month · May
3
quietest month · Oct
1 hr 17 min
measured flight time
12 / 12
months seen

Through the year

Per day, month by month

  1. 3Jan2026
  2. 3Feb
  3. 3Mar
  4. 3.5Apr
  5. 4May
  6. 4Jun
  7. 4Jul
  8. 4Aug
  9. 4Sep
  10. 3Oct2025
  11. 3Nov
  12. 3Dec

Airlines

Who flies it

Mesa Airlinesall year
UPS Airlinesall year
Republic Airwayssummer

Through the day

Departure times

Local time in Dulles. Most departures between 12:00 and 15:00.

  1. 00:00
  2. 01:00
  3. 02:00
  4. 03:00
  5. 04:00
  6. 05:00
  7. 06:00
  8. 07:00
  9. 08:00
  10. 09:00
  11. 10:00
  12. 11:00
  13. 12:00
  14. 13:00
  15. 14:00
  16. 15:00
  17. 16:00
  18. 17:00
  19. 18:00
  20. 19:00
  21. 20:00
  22. 21:00
  23. 22:00
  24. 23:00

Through the week

By weekday

  1. 2.6Mon
  2. 3.7Tue
  3. 3.9Wed
  4. 4.1Thu
  5. 3.8Fri
  6. 3.3Sat
  7. 2.5Sun

Fleet

Aircraft observed

  1. Embraer 175E75L65%
  2. Boeing 767-300B76318%
  3. Boeing 757-200B7526%
  4. Dassault Falcon 2000F2TH4%
  5. McDonnell Douglas MD-11MD112%
All the numbers in a table
MonthPer daySeenAirlines
January 2026381
  • Mesa Airlines55×
  • UPS Airlines20×
  • Republic Airways1×
February 2026381
  • Mesa Airlines51×
  • UPS Airlines20×
March 2026395
  • Mesa Airlines60×
  • UPS Airlines21×
April 20263.5103
  • Mesa Airlines56×
  • UPS Airlines37×
  • Republic Airways1×
May 20264130
  • Mesa Airlines46×
  • Republic Airways39×
  • UPS Airlines29×
June 20264119
  • Republic Airways58×
  • UPS Airlines29×
  • Mesa Airlines27×
July 20264127
  • Republic Airways58×
  • Mesa Airlines30×
  • UPS Airlines29×
August 20264125
  • Republic Airways53×
  • UPS Airlines30×
  • Mesa Airlines28×
September 20264122
  • Mesa Airlines40×
  • Republic Airways38×
  • UPS Airlines28×
October 2025385
  • Mesa Airlines56×
  • UPS Airlines24×
November 2025385
  • Mesa Airlines56×
  • UPS Airlines20×
December 2025381
  • Mesa Airlines48×
  • UPS Airlines18×

Airlines observed on this route

From observed callsign routes on IAD-SDF - not a booking guarantee.

Mesa Airlines

YV · ASH

Hub: IAH Houston

73 departure airportsView airline →

Republic Airways

YX · RPA

Hub: ORD Chicago

107 departure airportsView airline →

UPS Airlines

5X · UPS

Hub: SDF Louisville

154 departure airportsView airline →

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 Dulles: 171.
  • Direct destinations observed from Louisville: 142.

The airports on this route

Washington Dulles International Airport

Dulles, United StatesIAD / KIAD

International hub · 171 direct destinations · 4 runways · longest runway 11,499 ft

75 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Louisville Muhammad Ali International Airport

Louisville, United StatesSDF / KSDF

Regional airport · 142 direct destinations · 3 runways · longest runway 11,886 ft

55 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center

Airport pageAll direct destinations

Alternative airports for this journey

Same journey, a different airport nearby - with an observed direct connection.

DCA SDFRonald Reagan Washington National AirportWashington is about 24 mi from Dulles.View route →BWI SDFBaltimore/Washington International Thurgood Marshall AirportBaltimore is about 45 mi from Dulles.View route →IAD CVGCincinnati Northern Kentucky International AirportHebron is about 84 mi from Louisville.View route →

About the route from Dulles to Louisville

The observed direct connection between Washington Dulles International Airport (IAD) and Louisville Muhammad Ali International Airport (SDF) covers approximately 450 mi. The estimated flight time is around 1h 25m. Mesa Airlines, Republic Airways and UPS Airlines have been observed on this connection in the available route data.

Frequently asked questions about this route

How far is Dulles from Louisville by air?
The great-circle distance between Washington Dulles International Airport and Louisville Muhammad Ali International Airport is approximately 450 mi.
How long is the flight from Dulles to Louisville?
Based on the distance, the estimated flight time is about 1h 25m. This is an estimate, not a schedule.
Is there a direct connection from Dulles to Louisville?
Yes, a direct connection between IAD and SDF has been observed in our route data.
Which airlines have been observed on this route?
In the available route data: Mesa Airlines, Republic Airways and UPS Airlines.
How often is there a flight from Dulles to Louisville?
On average around 3.25 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 1,234 observed flights. Mainly Mesa Airlines, UPS Airlines, Republic Airways. That is an observation, not a timetable.
What is the current time difference between Dulles and Louisville?
Same local time in Dulles and 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.