$751 Cheap Flights from Kumamoto (KMJ) to San Diego (SAN)

View $751 flight on Sun, Nov 16, 2025Opens in a new window

Popular airlines from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN)

Cheap Flights from Kumamoto to San Diego (KMJ-SAN)

Prices were available within the past 7 days and start at $751 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN) cost?
Grab a cheap one-way flight from $751 or cheap return flight from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN)?
The cheapest month to fly from KMJ to SAN is , when demand is low. Off-peak season is usually when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest KMJ to SAN flight.
How many flights per day from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN)?
You'll have to book a flight with a layover when traveling from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from KMJ to SAN?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN)?
To touch down at San Diego Intl. Airport (SAN) without delays, pick a flight that leaves Kumamoto Airport (KMJ) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN) last-minute?
Last-minute bookings from KMJ to SAN are usually more expensive. For the lowest rates, start searching for flights well ahead of time. That said, if you're flexible with your travel plans, it's possible to find a cheap ticket right before you leave.
Is it cheaper to book a KMJ to SAN flight and hotel package?
Compared with arranging hotels and flights separately, booking a KMJ to SAN flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place takes the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Kumamoto Airport (KMJ) to San Diego Intl. Airport (SAN)?
If you booked your KMJ to SAN flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

Travel information

Travel information

Origin airport
Kumamoto
Destination airport
San Diego Intl.
Distance
6103 mi

Book with confidence

Book with confidence

Kumamoto to San Diego Flights

The cheapest times to fly from Kumamoto to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Kumamoto to San Diego are during the month of . You can find some of the cheapest flights from Kumamoto to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Kumamoto to San Diego

Sunday is one of the best days to book for cheap flights from Kumamoto to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Kumamoto to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Kumamoto to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $751 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Kumamoto to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Kumamoto to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Kumamoto to San Diego Flights

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*Available to One Key members.