Boeing 787-9 Dreamliner
Best seat quick answer
Best rows: 20, 30, 31, 32, 33, 34, 42, 44. Watch rows: 1, 9, 20, 30, 34, 35, 42, 44, 56, 57 because of lavatories, missing or misaligned windows, galleys, no under-seat storage, and door intrusion.
- 20 — Premium Plus bulkhead row: extra legroom; bassinet positions; tray/screen in armrest
- 30 — Economy Plus bulkhead row: extra legroom; bassinet positions; no underseat storage
- 31, 32, 33 — Economy Plus (side sections): extra legroom
- 34 — Economy Plus (left section only): extra legroom
United Airlines's Boeing 787-9 Dreamliner seats 257 passengers across 3 cabin classes. Business class offers 78 inches of pitch, economy comes in at 31 inches.
United Airlines flies the Boeing 787-9 Dreamliner in 3 layouts — pick yours
Seat map
United Polaris
Premium Plus
Economy
Good seat
Watch out
Avoid
Verified layout · 257 seats · 48J / 21W / 188Y · Verified 2026-06-11
Cabin
257 seats total| Class | Pitch | Width | Seats |
|---|---|---|---|
| United Polaris | 78" | 20" | 48 |
| Premium Plus | 38" | 18.7" | 21 |
| Economy | 31" | 17.1" | 188 |
Cabin guide
- United Polaris: 48 seats in a 1-2-1 layout (rows 1-12), polaris, staggered layout — window seats alternate between hugging the window (most private) and sitting beside the aisle, 78" pitch, 20" wide.
- Premium Plus: 21 seats in a 2-3-2 layout (rows 20-22), 38" pitch, 18.7" wide.
- Economy: 188 seats in a 3-3-3 layout (rows 30-57), 31" pitch, 17.1" wide.
Best seats
- 20 — Premium Plus bulkhead row: extra legroom; bassinet positions; tray/screen in armrest
- 30 — Economy Plus bulkhead row: extra legroom; bassinet positions; no underseat storage
- 31, 32, 33 — Economy Plus (side sections): extra legroom
- 34 — Economy Plus (left section only): extra legroom
- 42 — Economy Plus exit row behind door 3: extra legroom; A and L have door intrusion
- 44 — Economy Plus center bulkhead row: extra legroom; bassinet position; no underseat storage
Seats to avoid
- 1 — Forward galley and lavatory ahead: queuing traffic and noise
- 9 — Mid-cabin lavatory ahead: traffic and noise
- 34, 35 — Immediately adjacent to lavatory bank behind
- 42 — Exit door L3/R3 protrudes into 80-85% of seat width ahead; no window
- 56 — Tapered rear cabin; galley behind
- 57 — Last row: rear galley directly behind (rear lavatories are mid-cabin, rows 35-42)
Exit rows, lavatories & galleys
- Cabin, before row 1: 2 lavatories and galley - nearby rows can see queueing, door noise, and foot traffic and nearby rows can get meal-service noise and light.
- Cabin, between rows 8 and 9: 1 lavatory, galley, and exit door area - nearby rows can see queueing, door noise, and foot traffic, nearby rows can get meal-service noise and light, and adjacent seats may have extra legroom or door-slide intrusion.
- Cabin, between rows 35 and 42: 4 lavatories, galley, and exit door area - nearby rows can see queueing, door noise, and foot traffic, nearby rows can get meal-service noise and light, and adjacent seats may have extra legroom or door-slide intrusion.
- Cabin, behind row 57: galley and exit door area - nearby rows can get meal-service noise and light and adjacent seats may have extra legroom or door-slide intrusion.
Photos and reviews
United Airlines Boeing 787-9 Dreamliner seat photos and reviews
Licensed seat photos and published cabin reviews for this verified United Airlines Boeing 787-9 Dreamliner layout, grouped by cabin. Confidence labels show whether each source matches an exact seat, exact position, same product, or similar cabin.
United Airlines Boeing 787-9 Dreamliner United Polaris reviews
48 seats · Polaris · 78" pitch · 20" width
Cabin reviews
- United 787-9 Polaris Business Class review
The Aircraft King · Same product match
787-9 Polaris review; shown for selected Polaris seats on the 78P layout.
United Airlines Boeing 787-9 Dreamliner Premium Economy photos and reviews
21 seats · 38" pitch · 18.7" width
Seat photos
Cabin reviews
- United 787-9 Premium Plus review
SANspotter · Same product match
United Premium Plus review; shown for selected Premium Economy seats on United 787 layouts.
Variant identity
United Airlines uses this Boeing 787-9 page for 48J / 21W / 188Y. The seat counts below are taken from the verified layout, not a generic aircraft template.
- 48J / 21W / 188Y
- 257 seats as drawn
- 48 United Polaris, 21 Premium Plus, 188 Economy
Seat-by-seat notes
Every annotated seat on this verified layout, rated and explained: no window, near a galley or lavatory, limited recline, exit-row legroom, bulkhead or bassinet positions, misaligned windows, and tray-table or under-seat-storage quirks.
| Row / seat | Cabin | Rating | Reason |
|---|---|---|---|
| 12A, 12D, 12F | United Polaris | Avoid | near a bassinet position (possible infant noise) |
| 20A, 20E | Premium Plus | Mixed | bulkhead ahead, no under-seat storage for take-off and landing, extra legroom, tray table in the armrest, so narrower usable width, bassinet can be fitted here, and near a bassinet position (possible infant noise) |
| 20C | Premium Plus | Mixed | bulkhead ahead, no under-seat storage for take-off and landing, extra legroom, tray table in the armrest, so narrower usable width, and near a bassinet position (possible infant noise) |
| 20D, 20F, 20J | Premium Plus | Mixed | bulkhead ahead, no under-seat storage for take-off and landing, extra legroom, tray table in the armrest, so narrower usable width, partial bulkhead with extra legroom, and near a bassinet position (possible infant noise) |
| 22A, 22C, 22D, 22E, 22F, 22J | Premium Plus | Avoid | near a bassinet position (possible infant noise) |
| 30A, 30D, 30F | Economy | Mixed | bulkhead ahead, no under-seat storage for take-off and landing, extra legroom, tray table in the armrest, so narrower usable width, and near a bassinet position (possible infant noise) |
| 30B, 30E, 30K | Economy | Mixed | bulkhead ahead, no under-seat storage for take-off and landing, extra legroom, tray table in the armrest, so narrower usable width, bassinet can be fitted here, and near a bassinet position (possible infant noise) |
| 30C, 30J | Economy | Mixed | bulkhead ahead, no under-seat storage for take-off and landing, extra legroom, tray table in the armrest, so narrower usable width, partial bulkhead with extra legroom, and near a bassinet position (possible infant noise) |
| 31B, 31K | Economy | Avoid | near a bassinet position (possible infant noise) |
| 33K | Economy | Avoid | near a lavatory (queuing and noise) |
| 34A, 34B, 34C, 34D, 34F, 34J, 34K | Economy | Avoid | right beside a lavatory |
| 34E | Economy | Avoid | near a lavatory (queuing and noise) |
| 35A, 35B, 35C, 35D, 35E, 35F, 35J, 35K | Economy | Avoid | right beside a lavatory |
| 42A | Economy | Mixed | no window, solid wall alongside, extra legroom, tray table in the armrest, so narrower usable width, exit door intrudes into the seat, and near a lavatory (queuing and noise) |
| 42B, 42C, 42J, 42K | Economy | Mixed | extra legroom, tray table in the armrest, so narrower usable width, and near a lavatory (queuing and noise) |
| 43C, 43J | Economy | Avoid | near a bassinet position (possible infant noise) |
| 44D, 44F | Economy | Mixed | bulkhead ahead, no under-seat storage for take-off and landing, extra legroom, tray table in the armrest, so narrower usable width, and near a bassinet position (possible infant noise) |
| 44E | Economy | Mixed | bulkhead ahead, no under-seat storage for take-off and landing, extra legroom, tray table in the armrest, so narrower usable width, and bassinet can be fitted here |
Source & verification
Verified 2026-06-11. Seat count is validated against the published cabin totals before this map can render. Per-seat notes are extracted from the source data and rewritten into plain-language warnings for row selection.
- Source
- Coordinate-verified cabin layout
- Verification tier
- Tier A
- Validated seats
- 257
Frequently asked questions
- How many seats does the United Airlines Boeing 787-9 have?
- This United Airlines Boeing 787-9 configuration (48J / 21W / 188Y) has 257 seats: 48 United Polaris, 21 Premium Plus, 188 Economy.
- What are the best seats on the United Airlines Boeing 787-9?
- Rows with extra room on this aircraft: 20 (premium plus bulkhead row); 30 (economy plus bulkhead row); 31, 32, 33 (economy plus (side sections)); 34 (economy plus (left section only)); 42 (economy plus exit row behind door 3); 44 (economy plus center bulkhead row).
- Which seats should you avoid on the United Airlines Boeing 787-9?
- Seats worth double-checking before you pick: rows 1; 9; 34, 35; 42; 56; 57 — mostly due to lavatory and galley proximity, limited recline, or missing windows. Click any seat on the map for the specific reason.
- What type of business class seat does the United Airlines Boeing 787-9 have?
- Polaris — a staggered layout — single seats alternate between hugging the window (most private) and sitting beside the aisle, and the centre pair alternates between together (good for couples) and apart (good for solo travellers).
- What is the seat pitch on the United Airlines Boeing 787-9?
- Seat pitch and width by cabin: United Polaris 78" pitch, 20" wide; Premium Plus 38" pitch, 18.7" wide; Economy 31" pitch, 17.1" wide.
- Which seats have no window on the United Airlines Boeing 787-9?
- Window seats are missing or misaligned around rows 42. Tap any seat on the map for the exact note.
- Does the United Airlines Boeing 787-9 have premium economy?
- Yes - 21 Premium Plus seats in a 2-3-2 layout.
- How accurate is this United Airlines Boeing 787-9 seat map?
- This layout is verified seat-by-seat: every cabin count is checked against the airline's published configuration, and the full seat grid is validated before the map is shown. Last verified 2026-06-11.
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