Incheon International Airport
Seoul, South KoreaICN / RKSI
International hub · 99 direct destinations · 4 runways · longest runway 13,123 ft
61 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Route
Seoul → Hanoi
ICN
SeoulIncheon International Airport
SeoulIncheon International AirportHAN
HanoiNoi Bai International Airport
HanoiNoi Bai International Airport- Distance
- 1,668 mi
- Estimated flight time
- ~3h 50m
Hanoi is currently 2 hours behind Seoul.
Observed nonstop
How often does this route fly?
Frequency
Throughout the day
On average around 14.5 flights a day, observed from October 2025 to September 2026.
- 14.5
- flights per day
- 15
- busiest month · Aug
- 14
- quietest month · Sep
- 3 hr 50 min
- measured flight time
- 2 / 12
- months seen
Through the year
Per day, month by month
- –Jan2026
- –Feb
- –Mar
- –Apr
- –May
- –Jun
- –Jul
- 15Aug
- 14Sep
- –Oct2025
- –Nov
- –Dec
In October 2025 we saw less traffic at Seoul in general than usual; compare that month with care.
Airlines
Who flies it
Korean Airnow and then
Air Incheonnow and then
Vietnam Airlinesnow and then
Asiana Airlinesnow and then
Vietjetnow and then
Jeju Airnow and then
Through the day
Departure times
Local time in Seoul. Most departures between 23:00 and 02:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 1.3Mon
- 1.6Tue
- 1.9Wed
- 1.8Thu
- 1.9Fri
- 1.5Sat
- 1.8Sun
Fleet
Aircraft observed
- Boeing 747-400B74419%
- Boeing 787-10B78X13%
- Boeing 737-800B73812%
- Airbus A350-900A3598%
- Airbus A321A3217%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | Not seen in this month. | ||
| February 2026 | Not seen in this month. | ||
| March 2026 | Not seen in this month. | ||
| April 2026 | Not seen in this month. | ||
| May 2026 | Not seen in this month. | ||
| June 2026 | Not seen in this month. | ||
| July 2026 | Not seen in this month. | ||
| August 2026 | 15 | 135 |
|
| September 2026 | 14 | 425 |
|
| October 2025 | Not seen in this month. | ||
| November 2025 | Not seen in this month. | ||
| December 2025 | Not seen in this month. | ||
Airlines observed on this route
From observed callsign routes on ICN-HAN - not a booking guarantee.
About this route
- International route: Seoul and Hanoi are in different countries.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Seoul: 99.
- Direct destinations observed from Hanoi: 34.
The airports on this route
Noi Bai International Airport
Hanoi, VietnamHAN / VVNB
Major airport · 34 direct destinations · 2 runways · longest runway 12,467 ft
79 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
About the route from Seoul to Hanoi
The observed direct connection between Incheon International Airport (ICN) and Noi Bai International Airport (HAN) covers approximately 1,668 mi. The estimated flight time is around 3h 50m. Air Incheon, Asiana Airlines, Atlas Air, Jeju Air, Korean Air, Vietjet and Vietnam Airlines have been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Seoul from Hanoi by air?
- The great-circle distance between Incheon International Airport and Noi Bai International Airport is approximately 1,668 mi.
- How long is the flight from Seoul to Hanoi?
- Based on the distance, the estimated flight time is about 3h 50m. This is an estimate, not a schedule.
- Is there a direct connection from Seoul to Hanoi?
- Yes, a direct connection between ICN and HAN has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Air Incheon, Asiana Airlines, Atlas Air, Jeju Air, Korean Air, Vietjet and Vietnam Airlines.
- How often is there a flight from Seoul to Hanoi?
- On average around 14.5 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 560 observed flights. Mainly Korean Air, Air Incheon, Vietnam Airlines. That is an observation, not a timetable.
- What is the current time difference between Seoul and Hanoi?
- Hanoi is currently 2 hours behind Seoul.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.