Korean Air's Boeing 777-300ER is the flagship of the long-haul fleet, operating premium routes from Seoul Incheon to New York JFK, Los Angeles, San Francisco, London, Paris, Frankfurt, Sydney and across the transpacific network. The 777-300ER fleet has three distinct configurations with dramatically different Business Class products - including one layout with middle seats in Business Class that many passengers actively avoid.
Understanding which configuration you're booking is critical. This guide explains how to:
- Identify each Korean Air 777-300ER seat map
- Avoid the worst layouts (especially 2-3-2 Prestige Sleeper)
- Pick the best seats in First, Business, Premium Economy and Economy
Korean Air 777-300ER Cabin Layout Overview
Cabin Layout Summary
| Cabin |
Layout |
Key Features |
| First Class (Kosmo Suites 2.0) | 1-2-1 | 8 seats in rows 1-2 - Available on Type 1 and Type 2 only - Enclosed suites with sliding doors |
| Business (Type 1 Apex) | 2-2-2 staggered | 42 seats in rows 7-13 - Collins Apex - All seats have direct aisle access |
| Business (Type 2 Prestige Sleeper) | 2-3-2 | 56 seats in rows 7-14 - Middle seats in Business - Avoid if possible |
| Business (Type 3 Prestige Suites 2.0) | 1-2-1 | 40 seats in rows 6-15 - Newest product - Suites with doors |
| Premium Economy (Type 3 only) | 2-4-2 | 40 seats in rows 17-21 - Only available on Type 3 aircraft |
| Economy Class | 3-4-3 | 227-303 seats depending on variant - 32-34 inch pitch |
Configurations:
- Type 1: 8F / 42J / 227Y
- Type 2: 8F / 56J / 227Y
- Type 3: 40J / 40W / 248Y
How to Identify Your Korean Air 777-300ER Configuration
Check the seat map before you choose a seat:
| Version |
Clues on Seat Map |
Typical Routes |
| Type 1 (Apex 2-2-2) | Business shows 42 seats with staggered pairs; First Class present | Premium long-haul; North America, Europe |
| Type 2 (Prestige Sleeper 2-3-2) | Business shows 56 seats with middle seats (D-E-F visible); First Class present | Being phased out; check carefully |
| Type 3 (Prestige Suites 2.0 1-2-1) | Business shows 40 seats in 1-2-1; Premium Economy visible; no First Class | Newest aircraft; expanding routes |
Priority order for Korean Air 777-300ER:
Type 3 > Type 1 > Type 2
Actively avoid Type 2 if possible due to 2-3-2 Business Class with middle seats.
Best Seats in Korean Air First Class (Kosmo Suites 2.0)
First Class Overview
- 8 enclosed Kosmo Suites 2.0 in rows 1-2 in a 1-2-1 configuration
- Available on Type 1 and Type 2 aircraft only (not Type 3)
- Sliding doors for near-complete privacy
- Approx. 23 inch wide seats converting to fully-flat beds
- Large 4K screens; noise-cancelling headphones provided
- Excellent soft product with Korean and Western cuisine, caviar on some routes and premium champagne
Best First Class Seats
| Category |
Recommended Seats |
Why |
| Most private | 1A, 2A | Left-side window suites furthest from galley traffic; quietest corner of First cabin. |
| Good alternatives | 1K, 2K | Right-side window suites; slightly more galley activity but still excellent. |
| Best for couples | 1D-G, 2D-G | Centre suites with divider that can be lowered; still have sliding doors for privacy. |
First Class Seats to Avoid
| Category |
Seats |
Why |
| None critical | All seats | First cabin is small and all seats are premium; 1A/2A are just marginally quieter. |
Best Seats in Korean Air 777-300ER Business Class (Prestige Class)
Business Class Overview - Type 1 (Collins Apex 2-2-2)
- 42 seats in rows 7-13 in a staggered 2-2-2 configuration
- All seats have direct aisle access via the Apex stagger design - similar to Oman Air's Apex Suite
- Approx. 22 inch width with ~77 inch fully-flat bed
- Window seats offer three-window views and extra shell privacy
- This is the better of the two older Business products
Best Business Seats - Type 1 (Apex)
| Category |
Recommended Seats |
Why |
| Most private solo | 8A, 10A, 12A, 8K, 10K, 12K | Even-row window seats positioned closest to window with maximum separation from aisle. |
| Best for couples | 9D-G, 11D-G | Odd-row centre pairs positioned closest together; partition can be lowered. |
| Quietest | 9A, 9K, 10A, 10K, 11A, 11K | Mid-cabin rows away from row 7 (behind First) and row 13 (before Economy galley). |
| Mini-cabin feel | 12A, 12K, 13A, 13K | Rear rows have fewer passengers ahead; quieter during boarding and service. |
Business Seats to Avoid - Type 1 (Apex)
| Category |
Seats |
Why |
| Front row | 7A, 7C, 7D-G, 7H, 7K | Row 7 directly behind First Class galley with crew movement and light. |
| Last row centre | 13D-G | Row 13 centre closest to rear galley before Economy; more noise and foot traffic. |
Business Class Overview - Type 2 (Prestige Sleeper 2-3-2)
- 56 seats in rows 7-14 in a 2-3-2 configuration
- Genuine middle seats in Business Class (seats D, E, F) - this layout is widely regarded as uncompetitive
- No direct aisle access for window passengers (A, B) or inner-middle passengers (E)
- Approx. 20 inch width with angled-flat beds (not fully flat on some frames)
- Avoid this configuration if possible, especially on long-haul overnight flights
Best Business Seats - Type 2 (Prestige Sleeper) - If Unavoidable
| Category |
Recommended Seats |
Why |
| Least bad window | 9C, 10C, 11C, 9H, 10H, 11H | Aisle seats in middle rows; direct aisle access; avoid climbing over neighbour. |
| If window required | 9A, 10A, 11A, 9K, 10K, 11K | Mid-cabin windows; accept that you will climb over the aisle passenger. |
| Couples if necessary | 9D-F, 10D-F | Middle seats D-F let couples sit together, but middle passenger (E) is trapped. |
Business Seats to Avoid - Type 2 (Prestige Sleeper)
| Category |
Seats |
Why |
| All middle seats | Any E seat (8E, 9E, 10E, 11E, 12E, 13E, 14E) | Middle of 2-3-2 - no window, no aisle, trapped between two passengers. |
| Front row | 7A-K all seats | Behind galley with crew activity and light. |
| Last row | 14A-K all seats | Directly in front of Economy galley; limited recline possible and more galley noise. |
Business Class Overview - Type 3 (Prestige Suites 2.0 1-2-1)
- 40 seats in rows 6-15 in a 1-2-1 all-aisle-access configuration
- Suites with sliding privacy doors
- Approx. 21-22 inch width with ~75 inch fully-flat bed
- 23-24 inch 4K screens, wireless charging and USB-C power at every seat
- This is Korean Air's newest and best 777-300ER Business Class product
Best Business Seats - Type 3 (Prestige Suites 2.0)
| Category |
Recommended Seats |
Why |
| Most private solo | 7A, 9A, 11A, 13A, 7L, 9L, 11L, 13L | Odd-row window suites with maximum privacy; doors close for near-complete seclusion. |
| Best for couples | 8D-G, 10D-G, 12D-G | Even-row centre suites positioned closer together; doors and divider for flexible privacy. |
| Quietest | 9A, 9L, 10A, 10L, 11A, 11L | Mid-cabin rows away from forward galley and rear galley. |
| Mini-cabin | 14A, 14L, 15A, 15L | Rear rows feel more intimate with fewer passengers nearby. |
Business Seats to Avoid - Type 3 (Prestige Suites 2.0)
| Category |
Seats |
Why |
| Front row | 6A, 6D, 6G, 6L | Row 6 adjacent to forward galley with crew activity and curtain movement. |
| Last row centre | 15D, 15G | Row 15 centre suites closest to rear galley before Premium Economy. |
| Bassinet positions | 8D, 8G | Bulkhead-adjacent centre suites may have bassinets installed; higher chance of infants. |
Best Seats in Korean Air Premium Economy (Type 3 Only)
Premium Economy Overview
- 40 seats in rows 17-21 in a 2-4-2 configuration
- Available only on Type 3 aircraft (no Premium Economy on Type 1 or Type 2)
- Approx. 19 inch width with 38-41 inch pitch; significant upgrade from Economy
- Leg-rests and footrests; larger IFE screens than Economy
- Priority boarding, extra baggage on some fares and a dedicated cabin crew
Best Premium Economy Seats
| Category |
Recommended Seats |
Why |
| Best for couples | 17A-C, 17H-K | Bulkhead window pairs with extra legroom; only one seat between you. |
| Best for solo | 18A, 19A, 18K, 19K | Window in two-seat section for maximum privacy with only one neighbour. |
| Quietest | 18A-C, 19A-C, 18H-K, 19H-K | Mid-cabin window pairs away from bulkhead activity and last-row noise. |
Premium Economy Seats to Avoid
| Category |
Seats |
Why |
| Centre block middle | 17E, 17F, 18E, 18F, 19E, 19F, 20E, 20F, 21E, 21F | Middle of 2-4-2 centre block - trapped with no window or aisle. |
| Last row | 21A-K all seats | Limited recline; proximity to Economy cabin behind. |
| Bassinet bulkhead | 17D, 17E, 17F, 17G | Centre bulkhead seats may have bassinets; higher infant likelihood. |
Best Seats in Korean Air 777-300ER Economy Class
Economy Overview
- 227-303 seats in 3-4-3 configuration depending on variant
- Seat width: approx. 17.5 inches
- Seat pitch: 32-34 inches (varies by row and configuration)
- IFE: ~10.6 inch screens at every seat
- Power: USB at every seat; AC at some seats
- Split into forward and rear cabins separated by lavatories and galley
Best Economy Seats - All Configurations
| Category |
Recommended Seats |
Why |
| Exit row legroom | Check specific configuration | Exit rows vary; significantly more pitch; fixed armrests; may not recline. |
| Bulkhead legroom | First row of each Economy section | Extra knee room; tray table in armrest; bassinet positions at centre seats. |
| Forward cabin quiet | First 5 rows of Economy | Less foot traffic; served earlier; faster deplaning. |
| Window views | Any A or L seat mid-cabin | Window seats away from wing for best views and photos. |
Economy Seats to Avoid - All Configurations
| Category |
Seats |
Why |
| Last rows | Final 3 rows of each section | Limited or no recline; constant lavatory queue; odours. |
| Middle of middle | Any E or F seat | No window, no aisle - worst position in 3-4-3. |
| Centre block generally | D-E-F-G in any row | Four seats across; middle passengers are trapped. |
| Misaligned windows | Check specific seat reviews | Some rows have windows between seats, reducing views. |
Known Quirks and Cabin Notes
| Quirk / Note |
Details |
| Type 2 middle seats | The 2-3-2 Prestige Sleeper layout has genuine middle seats in Business Class. Actively avoid if possible by checking seat map before booking. |
| Asiana merger | Korean Air's merger with Asiana is creating equipment confusion. Verify aircraft type closer to departure as schedules and configurations may change. |
| Type 3 expansion | Prestige Suites 2.0 aircraft are expanding to more routes through 2025. Look for a 1-2-1 layout with Premium Economy to identify the newest product. |
| Wi-Fi availability | Type 3 aircraft have faster, more reliable Wi-Fi. Type 1 and Type 2 Wi-Fi varies by route and frame. |
| Kosmo Suites 2.0 | First Class is excellent but only available on Type 1 and Type 2. Type 3 has no First but offers better Business with doors. |
Configuration Comparison Summary
| Feature |
Type 1 (Apex) |
Type 2 (Prestige Sleeper) |
Type 3 (Prestige Suites 2.0) |
| Business layout | 2-2-2 staggered | 2-3-2 | 1-2-1 |
| Direct aisle access | Yes (all seats) | No (window/middle trapped) | Yes (all seats) |
| Business doors | No | No | Yes |
| First Class | Yes (8 seats) | Yes (8 seats) | No |
| Premium Economy | No | No | Yes (40 seats) |
| Desirability | Good | Avoid | Best |
Summary - Best Seats Overall (Korean Air 777-300ER)
| Cabin |
Best Seats |
| First Class | 1A, 2A for maximum privacy; 1D-G, 2D-G for couples. |
| Business (Type 1 Apex) | 8A, 10A, 12A, 8K, 10K, 12K for solo travellers; 9D-G, 11D-G for couples. |
| Business (Type 2 - avoid) | 9C, 10C, 11C, 9H, 10H, 11H aisle seats if unavoidable; avoid all E seats. |
| Business (Type 3 Suites) | 7A, 9A, 11A, 13A, 7L, 9L, 11L, 13L for solo; 8D-G, 10D-G for couples. |
| Premium Economy (Type 3) | 17A-C, 17H-K for bulkhead legroom; 18A, 19A for solo privacy in two-seat sections. |
| Economy | Exit rows for legroom; first 5 rows of Economy for quiet and quick service; avoid centre block and last rows. |
Korean Air 777-300ER - Frequently Asked Questions
How do I know which Korean Air 777-300ER configuration I am on?
Check the seat map when booking or in Manage My Booking:
- Type 1: 42 Business seats in staggered pairs plus 8 First Class.
- Type 2: 56 Business seats in 2-3-2 with visible middle seats (D-E-F) plus 8 First Class.
- Type 3: 40 Business suites in 1-2-1, no First Class, and a 40-seat Premium Economy cabin behind Business.
Should I actively avoid the 2-3-2 Business layout?
Yes. Type 2 (Prestige Sleeper 2-3-2) has genuine middle seats in Business Class where passengers are trapped between two others with no direct aisle access. If you are booking Business Class, verify your seat map and try to avoid Type 2 on overnight flights.
Is Korean Air First Class worth it over Business?
Kosmo Suites 2.0 First Class is excellent with enclosed suites, upgraded catering and very personalised service. However, Type 3's Prestige Suites 2.0 Business also has doors and a very modern hard product. First is worth it if you value extra space, exclusivity and top-tier soft product; Type 3 Business is a strong alternative.
Does Type 3 have Wi-Fi?
Yes. Type 3 aircraft with Prestige Suites 2.0 and Premium Class have Korean Air's newest and most reliable Wi-Fi systems. Type 1 and Type 2 have older systems with more variable performance.
How will the Asiana merger affect seating?
The merger with Asiana may lead to aircraft swaps and schedule changes, especially during the integration period. Always re-check your aircraft type and seat map closer to departure, as a change from Type 1/3 to Type 2 (or vice versa) can significantly affect your Business Class experience.
Which is better - Type 1 or Type 3?
- Type 3 is the best overall, with 1-2-1 suites with doors and a proper Premium Economy cabin.
- Type 1's Apex 2-2-2 is also excellent, with direct aisle access at all seats and very private window seats.
- Both are significantly better than Type 2. If you can, book Type 3 first, then Type 1, and avoid Type 2.
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