The cheapest times to fly from KMJ to STX are

  • April 30th to May 13th
  • June 25th to August 26th (except the week of August 6th)
  • October 1st to December 31st (except the week of November 19th)

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 KMJ to STX is mid October. Prices can be as high as $18600 for Saturday flights during early to mid January, or as low as $1380 for Wednesday flights around mid October.


When to Fly to Saint Croix

Flying from Kumamoto (KMJ) to Christiansted, VI (STX) will usually cost between $1518 to $17700 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid October with an average ticket price of $1520. Due to high demand the most expensive time to fly is early to mid January, with an average price of $16708. Planning your trip to low-cost times can easily save you $15188 on economy flights and even more on first-class flights. Generally, any price below $12900 can be considered a good price for a round-trip KMJ to STX flight.

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

KMJ to STX Flight Prices

Compared to other flights, the KMJ to STX flight is more expensive than the average and costs more than the average flight leaving from Kumamoto. The average price per mile (for a direct flight) is $0.91, which is above average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to STX, and Saturday the cheapest day to fly back into KMJ. Saturdays are the most expensive days to fly to Saint Croix, and Tuesdays are the most expensive days to return to Kumamoto. Selecting flights on the least expensive days could save you up to $2777 (23%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $7723. Return trip prices are from the STX to KMJ 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 KMJ to STX can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 16 hour 49 minutes may be realistic.


Flight Hacking KMJ to STX

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 KMJ to STX — but Champion Traveler does!

Hack #1: Tokyo (KMJ > NRT > STX)

  • Price for both tickets: $1477
  • Average savings: $11424 (88.55%)

See KMJ to KIX flights

Hack #2: Osaka (KMJ > KIX > STX)

  • Price for both tickets: $1514
  • Average savings: $11387 (88.27%)

See KMJ to NRT flights

Hack #3: Nagoya (KMJ > NGO > STX)

  • Price for both tickets: $1644
  • Average savings: $11256 (87.26%)

See KMJ to NGO flights


Flight Questions Answered

Still have questions about flying from KMJ to STX? We’ve got answers.

Which airlines fly this route?

You can find 4 major airlines flying this route most often: American, ANA, JAL, United, and potentially more during busy seasons.

How far away is it from Henry E. Rohlsen Airport to Kumamoto Airport?

The distance between the two airports is roughly 8793 miles or 14151 kilometers.

How long does it take to fly from KMJ to STX?

The real-world flight time for a nonstop KMJ to STX flight is about 16 hour 49 minutes.

How many flights go between Kumamoto and Christiansted, VI?

It depends on the day of the week and the date, but a typical day might have around 6 available flights from KMJ to STX.


Airport Location Info


Departing Airport

Origination code KMJ
Origination airport name Kumamoto Airport
City Kumamoto
Country Japan
Latitude 32.8
Longitude 130.9

Return Airport

Destination code STX
Destination airport name Henry E. Rohlsen Airport
City Christiansted, VI
Country the United States
Latitude 17.7
Longitude -64.8


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.