Option A (Most reliable): Private Transfer (Pre-book)
If you have an early flight, the biggest enemy is uncertainty.
A private transfer is door-to-door and does not depend on limited early-morning schedules.
Tip: when traveling as a group, the cost per person can be competitive.
Option B (Good value): Airport Limousine Bus (Early Morning)
If your departure time lines up, the Limousine Bus is a comfortable option with space for luggage.
For early flights, always confirm the timetable for your date.
Fare & line reference (official): Shinjuku ⇔ Haneda line .
[Source](https://www.limousinebus.co.jp/en/line/detail/Haneda-Shinjuku/)
Early-flight checklist (recommended)
Work backwards: check-in/bag drop deadlines → leave extra buffer for traffic.
Confirm early services: use official pages for early-morning details.
[Source](https://www.limousinebus.co.jp/en/timetable/detail/Haneda-Shinjuku/?dir=2)
If you can’t risk it: choose a private transfer.
General notes for late night/early morning travelers (official): Haneda Airport Access (late night/early morning) .
[Source](https://www.haneda-tokyo-access.com/en/haneda-airport/nightandmorning.html)
FAQ
Is the early-morning airport bus always available?
Services can vary by date and are limited at very early hours, so check the official timetable for your date.
[Source](https://www.limousinebus.co.jp/en/timetable/detail/Haneda-Shinjuku/?dir=2)
What is the safest option if I’m worried about delays?
A private transfer is usually the safest because it’s not dependent on limited early schedules.
Disclosure: This page contains affiliate links. Schedules and fares can change—please confirm on official websites before traveling.
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