transpacific · 15h 40m · 11,481 km
Atlanta to Seoul
2 airlines · 2 aircraft ranked
In business class, Delta's Delta One Suite (A350-900) dominates the field with a 8.3/10.Delta is the only carrier offering premium economy on this route, scoring 5.5/10.
Quick pick
Fly Delta. It has a wider seat (22" vs 21") and a private suite.
A noticeably better product that justifies the pick.
Fly Delta. It has free Wi-Fi (paid on Korean Air).
If prices are similar, go with this one.
Select two airlines to compare head-to-head
Data verified June 2026
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Airlines on this route
Flying with family
- Most legroom: Korean Air (33"). Least: Delta (31"). That 2" difference matters with kids.
Route insights
- In business class, Delta's Delta One Suite (A350-900) dominates the field with a 8.3/10.
- Delta is the only carrier offering premium economy on this route, scoring 5.5/10.
- In economy, Delta's Main Cabin (A350-900) edges out the field with a 5.1/10.
Frequently asked
Which is better in business: Delta or Korean Air on ATL-ICN?
Delta One Suite (Delta Air Lines, A350-900) dominates Prestige Suite (Korean Air, 777-300ER) in business, scoring 8.3/10 vs 5.2. The deciding factor: a closed suite door vs an open cabin.
Which is better in economy: Delta or Korean Air on ATL-ICN?
Main Cabin (Delta Air Lines, A350-900) and Economy (Korean Air, 777-300ER) score virtually the same in economy: 5.1 vs 4.8/10. The biggest gap is wi-fi — Free Wi-Fi vs No Wi-Fi — but neither carrier pulls ahead overall.
What are the best seats in Delta Delta One Suite on ATL-ICN?
Best: Odd-numbered window seats (1A, 3A, 5A, 7A, 9A and right-side equivalents) are closer to the window and farther from the aisle for maximum privacy. Center pairs with the privacy divider lowered are excellent for couples. Row 1 has the most open space. Avoid: Even-numbered window seats are closer to the aisle with less separation from foot traffic. Rows 8-9 are nearest to the galley between business and premium select. 32 suites with sliding doors and do-not-disturb indicators. 18-inch seatback screens. 4 lavatories for business class, significantly better than the A330-900neo's 2 lavatories. The A350 is considered Delta's flagship long-haul aircraft. Dine-on-demand service on ultra-long-haul routes.
What are the best seats in Delta Delta Premium Select on ATL-ICN?
Best: Row 20 has the most legroom as the bulkhead row with extra separation from the galley. Window doublets (A-B and H-J) are ideal for couples. Row 20 is the clear top pick unless noise sensitivity is a concern. Avoid: Center seats in the 4-abreast middle section (D-E-F-G), especially E and F which have no aisle access. Row 25 may have limited recline near the economy partition. 48 seats across 6 rows in a 2-4-2 layout. Premium amenity kit, adjustable headrest with privacy wings, dedicated flight attendant, and enhanced meal service. The outside doublets avoid the middle-seat problem entirely.
What are the best seats in Delta Main Cabin on ATL-ICN?
Best: Delta Comfort+ rows (approximately 30-35, 36 seats) offer 34 inches of pitch with priority boarding and dedicated bins. Row 30 bulkhead has the most legroom. Avoid: Middle seats in any 3-abreast section on long-haul flights. Last 3 rows near rear galley and lavatories. Seat 55E is consistently rated poorly. 3-3-3 economy layout at 17.4-inch width is the A350's weakest point relative to competitors. 36 seats are Delta Comfort+ with 34-inch pitch. Remaining 190 Main Cabin seats have 31-32 inches of pitch. Complimentary meal service on all international flights. Seatback IFE and USB/AC power throughout. Delta Sync free Wi-Fi.
What are the best seats in Korean Air Prestige Suite on ATL-ICN?
Best: Aisle seats for easier access in the 2-2-2 layout. Avoid: Window seats require climbing over your neighbor. Apex Suite hardware in 2-2-2 layout without direct aisle access. Privacy shields but no doors. 15.4-inch IFE. Most V1 frames lack wifi.