Korean Air Flight SQ644 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Korean Air Flight 644 Route Deals From $241

The cheapest prices found with in the last 7 days for return flights were $394 and $241 for one-way flights to Incheon Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jun 26 - Thu, Jul 3
SIN
Changi
ICN
Incheon Intl.
$394 Roundtrip, found 1 hour ago
$394
Roundtrip
found 1 hour ago
Select Korean Air flight, departing Thu, Jun 26 from Changi to Incheon Intl., returning Thu, Jul 3, priced at $394 found 1 hour ago

Frequently asked questions

What route does flight number KE644 take?
Flight number KE644 operates direct from Changi Airport (SIN) to ICN. During this trip, you’ll be in the air for 6 hours and 25 minutes. Consider booking ahead to lock in your favorite seat.
What terminal does KE644 fly out of?
KE644 runs between SIN and ICN, and those taking this flight usually board the aircraft from Terminal 1.
What kind of plane is on flight number KE644?
The Boeing 777-300ER is the type of plane most commonly used for flight number KE644. This flight typically jets off from Singapore Airport (SIN-Changi) and lands at Seoul–Incheon Intl. Airport.
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 KE644 flight with Travelocity, please visit our Customer Service Portal.