Singapore Airlines Flight SQ637 Deals & Information (2025/2026)

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Frequently asked questions

What route does flight number SQ637 take?
SQ637 flies non-stop from Tokyo Narita Airport to SIN. During this journey, you can expect to be in the air for approximately 7 hours and 10 minutes. Consider booking ahead to get your preferred seat.
How often is SQ637 on time?
Singapore Airlines flight number SQ637 between Tokyo Narita Airport and Singapore Airport (SIN-Changi) leaves on time 98% of the time --- so you can relax knowing that you will arrive at your destination ASAP. If this flight happens to be delayed, you'll probably wait 3 hours and 6 minutes. This route has a star rating of 2.5.
What terminal does SQ637 fly out of?
Travelers with a booking on flight number SQ637 from NRT to Changi Airport (SIN) normally take off from Terminal 1.
What kind of plane is on flight number SQ637?
The route for flight number SQ637 is most commonly NRT to Changi Airport, and the Boeing 787 is the type of aircraft you'll probably be traveling on.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your SQ637 flight with Travelocity, please visit our Customer Service Portal.