Cheapest€920.54
- Delta Air Lines DA579206:0817h 19m23:27Atlanta ATLSeoul GMP
Door to door 20h 29mCO2 1745.1 kgChanges 0Fixed, no changes
Atlanta to Seoul flight
Flights from Atlanta to Seoul start at €1,066.86 and take 18h 35m at their fastest.
The Flights from Atlanta to Seoul starts at €1,066.86 and takes 18h 35m door to door, run by 2 operators over 11,791 km, with around 10 departures a day. Fares bottom out about 45 days before departure.
- 18h 35mDoor to door
- 15h 25mMoving
- €1,066.86From
- 1745.1 kgCO2
The cheapest and the fastest on September 28, 2026
Two journeys we can sell today, with the service number each operator files them under.
Fastest€1,163.03
- Korean Air KA878117:3115h 25m08:56Atlanta ATLSeoul ICN
Door to door 18h 35mCO2 1745.1 kgChanges 0Fixed, no changes
Airlines
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From | Fastest |
|---|---|---|
 Delta Air Lines | €920.54 | 18h 22m |
 Korean Air | €964.79 | 18h 21m |
That is the traveling done. What happens after you walk out into Seoul is not something we sell.
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When to book Atlanta to Seoul
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €1,135.3090 days
- €895.7660 days
- €794.2845 days
- €801.3630 days
- €996.6521 days
- €1,180.7314 days
- €1,367.767 days
- €1,465.113 days
- €1,724.711 days
- Cheapest lead time
- Fares bottom out around 45 days ahead, at €794.28.
- How much it moves
- The gap between the cheapest and most expensive lead time is 117 percent. The most expensive point is €1,724.71, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 45 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €1,180.73Sun
- €1,144.15Mon
- €1,066.86Tue
- €1,202.56Wed
- €1,471.01Thu
- €1,369.53Fri
- €1,603.76Sat
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Atlanta
Air
- ATL
Seoul
Air
- ICN
- GMP
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- Direct or connecting
- 60% of the services we sell on this corridor run through without a change. The remaining 40% involve one connection.
- How far it really runs
- The route covers 11,791 km against 11,447 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Columbus, Cincinnati, Chicago, Anchorage. The gap between arriving and leaving is 47 minutes, of which about 5 is walking.
- If the connection is missed
- The tightest connection we sell here has a 20 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
- First and last departure
- The first service of the day leaves Atlanta at 06:08 and the last at 17:31, across 10 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Atlanta to Seoul
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from Atlanta to Seoul take?
The Flight from Atlanta to Seoul takes 18h 35m door to door, of which 15h 25m is spent moving. The route runs 11,791 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from Atlanta to Seoul cost?
The Flight from Atlanta to Seoul starts at €1,066.86 for one passenger, checked on September 13, 2026. A typical fare is €1,107.57. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from Atlanta to Seoul?
2 operators run the Flight from Atlanta to Seoul: Delta Air Lines, Korean Air. Between them they file around 10 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from Atlanta to Seoul use?
The Flight from Atlanta to Seoul leaves from Atlanta ATL and arrives at Seoul ICN. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from Atlanta to Seoul?
Fares for the Flight from Atlanta to Seoul bottom out around 45 days ahead, at €794.28. The gap between the cheapest and most expensive lead time across the window is 117 percent, measured on September 13, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Atlanta to Seoul produce?
The Flight from Atlanta to Seoul produces about 1745.1 kg of CO2 per passenger over 11791 km, which works out at roughly 148 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Atlanta to Seoul on September 13, 2026: 11791 km of route against 11447 km in a straight line, 10 services a day, 2 operators, a cheapest fare of €1,066.86, and 18h 35m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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