Cheap flights from Boston to Japan from $435

The month of January is, on average, the cheapest month to fly to Japan from Boston, with most prices found around $996. If you aren’t able to travel to Japan during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $1,190.

On average, the least expensive day to fly to Japan from Boston is on a Monday. momondo users have found tickets for Monday departures for as low as $1,369. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Boston to Japan on a Saturday will generally be more expensive and average around $1,936. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Flying to Japan from Boston in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,388 when looking at flights departing in the morning. At noon is when there is more demand to fly to Japan, so prices are often more expensive at around $1,698 per ticket.

Fly from Boston Logan Intl to Tokyo Narita for the best Boston Logan Intl - Japan flight prices

You are more likely to see cheaper flights to Japan from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Japan for around $1,452 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Japan from Boston for as low as $1,152 on momondo.

There are 3 cabin classes available to choose from on Boston to Japan flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Delta, Korean Air, and Alaska Airlines are the most popular carriers operating from Boston Logan Intl to Japan

Japan Airlines, Air Canada and ANA are the top three most popular airlines that fly to Japan from Boston according to our data. Japan Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Japan. Keep in mind that there are 10 different airlines that fly to Japan on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% of flights between Boston and Japan have experienced a delay on any given week. The average delay length over the past 12 months has been 142 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Sunday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, Japan Airlines have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

4 flights are operational daily from Boston to Japan as of October 2026. The most popular departure time for this route is 1:00PM, with 100% of flights per day taking off in the afternoon.

As of October 2026, 28 flights take off from Boston and land in Japan each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.