What are the best seats on the United Airlines Boeing 787-9?

The best seats are 3A (10/10), 3L (10/10), 5A (10/10). Polaris Business lie-flat window — 78 inches legroom.

Which seats should I avoid on the United Airlines Boeing 787-9?

Seats to avoid: 57B (1/10), 57C (1/10), 57D (1/10). Main Cabin middle — 31 inches legroom.

What is the seat layout on the United Airlines Boeing 787-9?

The United Airlines Boeing 787-9 seats 257 passengers in a 1-2-1 / 2-3-2 / 3-3-3 layout across 3 cabin classes: Polaris Business (48), Premium Plus (21), Economy (188).

Which seats don't recline on the United Airlines Boeing 787-9?

Rows 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 56, 57 do not recline and are not exit rows. These are typically last-row seats near the lavatory or galley.

How many cabin classes does the United Airlines Boeing 787-9 have?

The Boeing 787-9 has 3 cabin classes: Polaris Business (48 seats), Premium Plus (21 seats), Economy (188 seats).

Does the United Airlines Boeing 787-9 have power outlets?

Yes, all seats have ac+usb-a power outlets. Seatback screens are available.

UA·United Airlines

Boeing 787-9· Polaris

257 SEATS1-2-1 / 2-3-2 / 3-3-357 ROWS

257 seats1-2-1 / 2-3-2 / 3-3-3 layoutPolaris✓ Wi-Fi

Last verified: April 2026

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Seat map

Rows 1–57 · 257 seats rated

Pick a green. Skip the reds. Whites are fine, yellows have trade-offs.

7-10 — Recommended

5-6 — Standard seat

4 — Trade-offs

1-3 — Avoid

Not rated yet

KeyPick a green. Skip reds. Whites fine, yellows trade-offs.

Pick a green. Skip the reds. Whites are fine, yellows have trade-offs.

7-10 — Recommended

5-6 — Standard seat

4 — Trade-offs

1-3 — Avoid

Not rated yet

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Best seats on this plane

Economy

1
31A7/10Window
Economy Plus window — 34 inches legroom.
2
31L7/10Window
Economy Plus window — 34 inches legroom.
3
32A7/10Window
Economy Plus window — 34 inches legroom.

Premium Plus

1
21A7/10Window
Premium Plus window — 38 inches legroom, 6 inches recline. Seatback screen (13 inches).
2
21L7/10Window
Premium Plus window — 38 inches legroom, 6 inches recline. Seatback screen (13 inches).
3
22A7/10Window
Premium Plus window — 38 inches legroom. Last Premium Plus row.

Polaris Business

1
3A10/10Window
Polaris Business lie-flat window — 78 inches legroom. Closer to sidewall — more private.
2
3L10/10Window
Polaris Business lie-flat window — 78 inches legroom. Closer to sidewall — more private.
3
5A10/10Window
Polaris Business lie-flat window — 78 inches legroom. Closer to sidewall — more private.

Seats to avoid

Economy

1
57B1/10Middle
Main Cabin middle — 31 inches legroom. Last row. Limited recline.
2
57D1/10Middle
Main Cabin middle — 31 inches legroom. Last row. Limited recline.
3
57E1/10Middle
Main Cabin middle — 31 inches legroom. Last row. Limited recline.

Premium Plus

1
20D3/10Middle
Premium Plus bulkhead middle — 38 inches legroom. No underseat storage. Armrest tray table.
2
20E3/10Middle
Premium Plus bulkhead middle — 38 inches legroom. No underseat storage. Armrest tray table.
3
20F3/10Middle
Premium Plus bulkhead middle — 38 inches legroom. No underseat storage. Armrest tray table.

Polaris Business

1
9D6/10Aisle
Polaris Business lie-flat aisle — 78 inches legroom.
2
9F6/10Aisle
Polaris Business lie-flat aisle — 78 inches legroom.
3
1D6/10Aisle
Polaris Business lie-flat aisle — 78 inches legroom.

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SECTION · WHAT YOU NEED TO KNOW

What you need to know

→Row 57 is the last row. No recline, constant lavatory traffic, and odor from the galley.
→All seats have AC + USB-A power.

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SECTION · RELATED GUIDES

Related guides

Trap row seats to avoid

Pre-exit rows, cabin boundaries, and last rows to skip

Bulkhead seats explained

The trade-offs of sitting behind a wall

Extra legroom seats compared

Economy Plus vs Comfort+ vs MCE across all airlines

No-recline seats: the master list

Every seat that won't go back, verified by source