Seoul to Vientiane Flight Distance
Incheon International Airport (ICN) to Wattay International Airport (VTE)
Primary sources · 6
- [1] Vincenty (1975) — Direct and Inverse Solutions of Geodesics on the Ellipsoid — the iterative formula used for distance · Survey Review XXIII (176), pp. 88–93 · April 1975 https://www.ngs.noaa.gov/PUBS_LIB/inverse.pdf
- [2] NGA.STND.0036_1.0.0_WGS84 — WGS-84 reference ellipsoid (a = 6,378,137 m, 1/f = 298.257223563) · NGA Standard · July 2014 https://earth-info.nga.mil/index.php?dir=wgs84&action=wgs84
- [3] DESNZ 2024 conversion factors — Per-km kg CO₂e factors for the three distance bands and four cabin classes · UK Department for Energy Security and Net Zero · June 2024 https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2024
- [4] Lee et al. (2021) — Effective radiative forcing of aviation — the science behind the 1.9 × CO₂ → CO₂e uplift · Atmospheric Environment 244, 117834 · January 2021 https://doi.org/10.1016/j.atmosenv.2020.117834
- [5] OpenFlights — Airport coordinates and IATA codes · openflights.org/data.php · Community-maintained https://openflights.org/data.php
- [6] Sack (2010) — Jet-lag review — clinical chronobiology and asymmetric recovery rates · New England Journal of Medicine 362:440 · February 2010 https://www.nejm.org/doi/full/10.1056/NEJMcp0909838
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Your Route Summary
What This Means For Your Trip
Flight Duration: At 1,974 miles, this medium-haul flight will take approximately 4h 24m. Consider bringing a book or downloading entertainment for the journey.
Time Adjustment: Vientiane is 2 hours behind Seoul. You should experience minimal jet lag.
Environmental Impact: An economy class seat produces approximately 496 kg of CO2. Consider carbon offset programs if environmental impact is a concern.
Flight Options: 2 airlines serve this route, giving you options for schedule and price comparison.
Complete Flight Analysis
| Metric | Value | Category / Reference |
|---|---|---|
| Distance (Miles) | 1,974 mi | Primary frequent flyer unit |
| Distance (Kilometers) | 3,177 km | International standard |
| Distance (Nautical Miles) | 1,715 nm | Aviation standard |
| Flight Time | 4h 24m | Based on 850 km/h cruise + ground time |
| Route Classification | MEDIUM HAUL | Medium-haul flight (1,500 - 4,000 km) |
| Flight Direction | 234° SW | Southwest |
| Cruising Altitude | 37,000 ft | FL370 (11,278 m) |
| Time Difference | -2h | Jet lag: none |
| CO2 (Economy) | 496 kg | DEFRA 2024 factors |
| CO2 (Business) | 1437 kg | 2.9x economy |
| CO2 (First Class) | 1982 kg | 4x economy |
| Trees to Offset | 45 | Economy class, per passenger |
| Fuel per Passenger | 95 L | ~17,100 L total (180 pax) |
| Operating Airlines | 2 | Direct flights available |
Tips for This Route
Incheon International Airport
Seoul, South Korea
Wattay International Airport
Vientiane, Laos
Airlines Flying This Route
2 airlines operate flights between Seoul and Vientiane.
Flight Details
Flight Midpoint
The geographic midpoint of this flight is located at:
Carbon Emissions by Cabin Class
CO2 emissions vary by cabin class due to seat space allocation. Based on DEFRA 2024 emission factors.
Jet Lag & Travel Tips
- Minimal time difference - jet lag unlikely
Seat Recommendations
Distance in Perspective
Distance & Speed Reference
| Measurement | Value |
|---|---|
| Statute Miles | 1,974 mi |
| Kilometers | 3,177 km |
| Nautical Miles | 1,715 nm |
| Meters | 3,177,000 m |
| Feet | 10,422,720 ft |
| Flight Time (850 km/h) | 4h 24m |
Travel Speed Comparison
How long would it take to cover the 3,177 km between Seoul and Vientiane at different speeds?
| Mode | Speed | Time |
|---|---|---|
| Commercial Jet | 850 km/h | 4h 24m |
| Turboprop Aircraft | 500 km/h | 6h 21m |
| Bullet Train | 320 km/h | 9h 56m |
| Car (highway) | 100 km/h | 31h 46m |
| Walking | 5 km/h | 635h (26 days) |
| Speed of Sound | 1,235 km/h | 2h 34m |
Round Trip Summary
Quick Facts
Routes from ICN
View all routesFrequently Asked Questions
How far is Seoul from Vientiane?
The flight distance from Incheon International Airport (ICN) to Wattay International Airport (VTE) is 1,974 miles (3,177 km). This is the great circle distance calculated using the Vincenty formula.
How long is the flight?
A direct flight takes approximately 4h 24m. This is a medium-haul flight typically cruising at 37,000 feet (FL370).
What is the time difference?
Vientiane is 2 hours behind Seoul.
What airlines fly this route?
2 airlines operate this route: Jin Air, Lao Airlines.
What is the carbon footprint?
Economy class: 496 kg CO2 per passenger. Business class: 1437 kg. First class: 1982 kg. Offset with ~45 trees.
Which seat side is best?
For this Southwest flight, the right side offers the best views away from sun glare.
Can I drive from Seoul to Vientiane instead of flying?
Driving is not practical for this 3,177 km distance, especially across international borders. It would theoretically take over 40 hours of driving. Flying at 4h 24m is the recommended option.
What aircraft typically fly this route?
This medium-haul route is typically served by Airbus A321, Boeing 737 MAX, Airbus A320neo aircraft. A mix of narrow-body and wide-body aircraft may operate this route depending on demand.
How can I offset the carbon from this flight?
An economy class seat on this route produces 496 kg CO2. You can offset this by planting approximately 45 trees, purchasing verified carbon credits through programs like Gold Standard or Verra, or supporting renewable energy projects. Many airlines also offer built-in carbon offset options during booking.
External Resources & References
Learn more about the airports, aviation data, and carbon emissions methodology used in this calculation.