Find the Cheapest Flights from Boston to Japan

Unlock the cheapest flights and the best airfares from Boston to Japan. Make your dream trip both memorable and affordable!

Fri, May 15BOS-OSA
Etihad Airways

oneway$584

Fri, Apr 17BOS-TYO
Spirit Airlines

oneway$590

Sun, Oct 4BOS-TYO
American Airlines

$1,136

Boston to Japan: Flight information

Cheapest flight found$584

Cheapest month to flyMay

Most popular airlineEtihad Airways

Average flight duration1d 6h 25m

Cheapest flight found

Apr 2026

$590

May 2026

$605

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