The cheapest times to fly from SDF to NRT are

  • January 1st to March 4th
  • March 26th to April 15th
  • August 27th to December 9th (except the week of October 8th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SDF to NRT is late November to early December. Prices can be as high as $1841 for Saturday flights during early August, or as low as $1154 for Tuesday flights around late November to early December.


When to Fly to Tokyo

Flying from Louisville, KY (SDF) to Tokyo (NRT) will usually cost between $1184 to $1656 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late November to early December with an average ticket price of $1243. Due to high demand the most expensive time to fly is early August, with an average price of $1721. Planning your trip to low-cost times can easily save you $478 on economy flights and even more on first-class flights. Generally, any price below $1318 can be considered a good price for a round-trip SDF to NRT flight.

See below for a graph of average weekly prices for the SDF to NRT route. All prices are for round-trip tickets in USD.

SDF to NRT Flight Prices

Compared to other flights, the SDF to NRT flight is slightly more expensive than the average and costs more than the average flight leaving from Louisville. The average price per mile (for a direct flight) is $0.13, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $177 (12%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $1292. Return trip prices are from the NRT to SDF flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SDF to NRT can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 12 hour 45 minutes may not be realistic.


Flight Hacking SDF to NRT

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SDF to NRT — but Champion Traveler does!

Hack #1: Scranton/Wilkes-Barre, PA (SDF > AVP > NRT)

  • Price for both tickets: $965
  • Average savings: $353 (26.76%)

See SDF to AVP flights

Hack #2: Las Vegas, NV (SDF > LAS > NRT)

  • Price for both tickets: $984
  • Average savings: $334 (25.31%)

See SDF to LAS flights

Hack #3: Pittsburgh, PA (SDF > PIT > NRT)

  • Price for both tickets: $989
  • Average savings: $329 (24.93%)

See SDF to PIT flights


Flight Questions Answered

Still have questions about flying from SDF to NRT? We’ve got answers.

Which airlines fly this route?

You can find 15 major airlines flying this route most often: Aeromexico, Air Canada, American, ANA, Asiana, British Airways, Cathay Pacific, Delta, Etihad, Finnair, JAL, KLM, Korean Air, Turkish Airlines, United, and potentially more during busy seasons.

How far away is it from Narita International Airport to Louisville International-Standiford Field Airport?

The distance between the two airports is roughly 6537 miles or 10520 kilometers.

How long does it take to fly from SDF to NRT?

The real-world flight time for a nonstop SDF to NRT flight is about 12 hour 45 minutes.

How many flights go between Louisville, KY and Tokyo?

It depends on the day of the week and the date, but a typical day might have around 76 available flights from SDF to NRT.


Airport Location Info


Departing Airport

Origination code SDF
Origination airport name Louisville International-Standiford Field Airport
City Louisville, KY
Country the United States
Latitude 38.2
Longitude -85.7

Return Airport

Destination code NRT
Destination airport name Narita International Airport
City Tokyo
Country Japan
Latitude 35.8
Longitude 140.4


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.