South Korea head to head
Korean Air vs Asiana Business Class
2 airlines · 13 business cabins scored · best 9.2/10
Korea's two carriers are mid-merger and mid-retrofit at the same time, which makes the seat lottery unusually wide. Both fly modern suites and both still fly cabins that would have looked dated a decade ago.
Side by Side
| Metric | Korean Air | Asiana Airlines |
|---|---|---|
| Best cabin measured | Korean Air Prestige Suites 2.0 | Asiana Airlines Business Smartium |
| Best score | 9.2/10 | 9.0/10 |
| Typical score | 8.5/10 | 7.5/10 |
| Worst cabin measured | Korean Air Prestige Class (Prestige Sleeper) (5.9) | Asiana Airlines Business Class (4.6) |
| Cabins measured | 7 | 6 |
| Aircraft types measured | 4 | 6 |
| Routes tracked | 12 | 10 |
| Seat width (best) | 53 cm | 56 cm |
| Bed length (best) | 201 cm | 193 cm |
| Direct aisle access | Best cabin only | Best cabin only |
| Any measured cabin not lie-flat | None so far — coverage incomplete | Yes — 3 cabins |
| Privacy (best cabin) | 100/100 | 75/100 |
“Typical score” weights each cabin by how often Flightradar24 data shows it flying the routes we track. It is the number that answers “what will I probably get” rather than “what is the best they have”. Every row describes the cabins we have measured on those routes — not each airline's entire fleet, which we don't claim to cover.
The Verdict
On hardware alone, Korean Air wins: its Korean Air Prestige Suites 2.0 scores 9.2/10, the best in this comparison.
It also holds up in practice: Korean Air has the highest typical seat too, at 8.5/10 weighted by what we observe flying.
If you would rather not gamble, Korean Air has the narrowest spread between its best and worst business cabin (5.9 to 9.2), so the downside is the shallowest.
None of these brands are one product. Every carrier here flies the same marketing name over cabins a generation apart, and the deciding variable is which airframe is scheduled on your date. Check the route page or look up the flight number before you decide the brand settled it.
Carrier by Carrier2
Best seat: Korean Air Prestige Suites 2.0 on the 777-300ER, at 9.2/10. Across everything we observe them flying, the typical seat scores 8.5/10 — a 0.7-point drop from the brochure.
By aircraft
- Boeing 777-300ER Prestige Suites 2.0 / Prestige Class (Prestige Suites) / Prestige Class (Prestige Sleeper)5.9–9.2
- Boeing 787-10 Prestige Suite9.1
- Airbus A330-300 Prestige Class (Prestige Suites) / Prestige Class (Prestige Sleeper)6.0–8.4
- Boeing 787-9 Prestige Class (Apex Suite)8.4
Best seat: Asiana Airlines Business Smartium on the A350-900, at 9.0/10. Across everything we observe them flying, the typical seat scores 7.5/10 — a 1.5-point drop from the brochure.
Not every Asiana Airlines business cabin we've measured goes fully flat — Business Class, Business Class, Business Class do not.
By aircraft
- Airbus A350-900 Business Smartium9.0
- Airbus A380-800 Business Smartium9.0
- Boeing 777-200 Business Smartium8.7
- Airbus A330-300 Business Classnot flat5.2
- Airbus A321 Business Classnot flat4.6
- Airbus A321neo Business Classnot flat4.6
Best Cabins in This Comparison8
