2 airlines go head-to-head on the DTW–ICN route. Compare seats, lounges, and fares from $2,500.
2 airlines fly business class from Detroit (DTW) to Seoul (ICN), with round-trip fares ranging from $2,500 to $6,500. The average flight time is 13.5 hours. Delta Air Lines and Korean Air are the primary competitors on this route. The most affordable fares typically appear in March, April, September.
Detroit's gateway to Seoul is a surprisingly competitive business class corridor, and travelers considering the roughly 13.5-hour journey from DTW to Incheon have two genuinely strong options to evaluate: Delta Air Lines and Korean Air. To state it plainly, business class from Detroit to Seoul means choosing between Delta's domestic-connecting hub strength and Korean Air's superior onboard product refinement — a distinction that matters enormously over a flight of this length.
Korean Air's Prestige Suite on the 787-10 is, frankly, the more polished product of the two. The sliding privacy door feels more substantial than Delta One's version, the seat itself reclines into a genuinely flat and wide bed, and the cabin crew service carries a formality and attentiveness that Korean Air has spent decades cultivating. The in-flight dining is where Korean Air truly separates itself — the bibimbap and multi-course Korean meal service are not afterthoughts but carefully executed expressions of the carrier's national culinary identity. At Incheon, Korean Air's lounge access is exceptional, though on the departure end from Detroit, you'll be using Delta's Sky Club, which is adequate but unremarkable. Delta One's suite, meanwhile, offers a competitive door-equipped product and pairs well with Delta's strong domestic feed from across the Midwest — a meaningful practical advantage if you're connecting from smaller cities.
For suite seekers prioritizing the overnight sleep experience and arrival condition, Korean Air wins this comparison without much debate. For foodies who care as much about the meal as the mattress, Korean Air again earns the edge. Delta, however, is the smarter choice for value hunters and those who prize seamless SkyMiles redemption or elite status benefits across a domestic-heavy travel schedule. Korean Air tends to price this route more aggressively during shoulder seasons, and March, April, September, and October consistently surface the most competitive fares — Korean Air in particular uses these windows to stimulate premium cabin demand before and after peak summer travel.
The insider tip worth acting on: Korean Air frequently releases Prestige Suite award space on this route closer to departure, making it worth checking availability within the 30-day window if you're flexible. Given how quickly premium inventory shifts on a route with this level of corporate and leisure demand, setting up automated fare alerts through a dedicated monitoring service is the most reliable way to catch the windows when they open.
| Airline | Product | Seat Type | Lounge | Alliance | Typical Fare |
|---|---|---|---|---|---|
Delta Air Lines DL | Delta One Suite | 1-2-1 suite with door | Delta One Lounge / Sky Club | SkyTeam | From $2,500 |
Korean Air KE | Prestige Suite | 1-2-1 suite with sliding door | Korean Air Prestige Class Lounge | SkyTeam | From $2,500 |
Delta One Suite
1-2-1 suite with privacy door on A350 and 767-400
Prestige Suite
1-2-1 suite with sliding privacy door on 787-10
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Start Tracking — It's Free →2 airlines operate Business Class on this route: Delta Air Lines, Korean Air. The "best" depends on your priorities — some offer enclosed suites, others prioritize food and lounge access. Our comparison table above breaks down each airline's seat type, lounge, and typical fare so you can decide what matters most.
Business Class fares on this route typically range from $2,500 to $6,500 round-trip. Pricing varies significantly by airline, season, and advance purchase. The best months to find competitive fares are March, April, September.
Set up a free fare watchlist on BusinessClassSignal. We monitor Business Class fares across all 2 airlines on this route 24/7 and alert you the moment prices drop to your target budget. Most travelers save $1,500–$3,000+ per ticket by catching short-lived price drops.
The average flight time is approximately 13.5 hours. Business Class makes long-haul flights significantly more comfortable with lie-flat seats, premium dining, and priority services. The experience varies considerably between airlines — see our comparison above.