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Seats Frog guide

United Airlines Boeing 777-300ER seat map

United's own seat map for this Boeing 777-300ER shows 350 seats: 60 Polaris, 24 Premium Plus and 266 Economy.

350 seats✓ Checked against United Airlines's seat map · October 2026

Cabins at a glance

Seat map

Green seats are good, amber are a trade-off, red are best avoided. Hover over or tap a seat to see why.

Front of aircraft

×2
GalleyCloset

United Polaris business class

1-2-1 · Lie-flat bed · 22" wide

1
Bulkhead
2
3
4
5
6
Galley
Galley
7
8
Lav
Midflight hospitality area
9
Exit
10
11
12
15
16
17
18

United Premium Plus

2-4-2 · Recliner · 38" pitch · 18.5" wide

20
Bulkhead
21
22
Lav
Lavatory

United Economy

3-4-3 · Recliner · 31" pitch · 17.05" wide

30
Exit
31
32
33
34
35
36
37
38
39
40
41
42
43
Galley
Lavatory
Galley
Lavatory
45
Exit
46
Bassinet
47
48
49
50
51
52
53
54
55
56
57
Lav
Lavatory
Lavatory
58
Galley
Galley

Back of aircraft

Seat map updated October 2026. Rows and seats are as United Airlines's own seat map shows them. Airlines change layouts and swap aircraft, so check the seat map in your booking too.

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Cabins

CabinSeatsRowsLayoutSeatPitchWidthReclineBedWi-Fi
United Polaris business class
601–181-2-1Lie-flat bed—22 in—78 inYes
United Premium Plus
2420–222-4-2Recliner38 in18.5 in6 in—Yes
United Economy
26630–583-4-3Recliner31 in17.05 in3 in—Yes

Best and worst seats

Best seats

  • Rows 2–7, 10–12 and 15–18, seats A and L · United Polaris business class

    Set back from the aisle, so it is more private

  • Row 9, seats D and G · United Polaris business class

    Exit row with extra legroom

  • Rows 31–33, seats A, B, C, D, E, F, G, J, K and L · United Economy

    United Economy Plus: about 34" of pitch, against 31" in Economy

  • Rows 34–35, seats A, B, C, J, K and L · United Economy

    United Economy Plus: about 34" of pitch, against 31" in Economy

  • Row 46, seats D, E, F and G · United Economy

    United Economy Plus: about 34" of pitch, against 31" in Economy

Trade-offs

  • Row 1, seats A, D, G and L · United Polaris business class

    Bulkhead row, so nobody reclines into you

  • Row 8, seats A and L · United Polaris business class

    Set back from the aisle, so it is more private

  • Row 9, seats A and L · United Polaris business class

    Exit row with extra legroom

  • Row 20, seats A, B, D, E, F, G, K and L · United Premium Plus

    Bulkhead row, so nobody reclines into you

  • Row 30, seats A, B, C, D, E, F, G, J, K and L · United Economy

    Bulkhead row, so nobody reclines into you

  • Row 45, seats A, B, C, J, K and L · United Economy

    Exit row with extra legroom

Seats to avoid

  • Row 6, seats D and G · United Polaris business class

    Next to a galley, with light and noise during service

  • Row 22, seats D, E, F and G · United Premium Plus

    Next to a lavatory, with queues, noise and flushing

  • Row 43, seats A, B, C, J, K and L · United Economy

    Next to a lavatory, with queues, noise and flushing

  • Rows 43 and 58, seats D, E, F and G · United Economy

    Next to a galley, with light and noise during service

  • Row 57, seats A, B, K and L · United Economy

    Next to a lavatory, with queues, noise and flushing

Quick answers

How many seats does United Airlines's Boeing 777-300ER (350 seats) have?

United Airlines's Boeing 777-300ER (350 seats) has 350 seats: 60 in United Polaris business class, 24 in United Premium Plus and 266 in United Economy.

What are the best Economy seats on United Airlines's Boeing 777-300ER (350 seats)?

On United Airlines's Boeing 777-300ER (350 seats), the best Economy seats are rows 31–33, seats A, B, C, D, E, F, G, J, K and L (united Economy Plus: about 34" of pitch, against 31" in Economy), rows 34–35, seats A, B, C, J, K and L (united Economy Plus: about 34" of pitch, against 31" in Economy) and row 46, seats D, E, F and G (united Economy Plus: about 34" of pitch, against 31" in Economy).

Which seats should I avoid on United Airlines's Boeing 777-300ER (350 seats)?

On United Airlines's Boeing 777-300ER (350 seats), avoid row 6, seats D and G (next to a galley, with light and noise during service), row 22, seats D, E, F and G (next to a lavatory, with queues, noise and flushing) and row 43, seats A, B, C, J, K and L (next to a lavatory, with queues, noise and flushing).

What is United Polaris business class like on United Airlines's Boeing 777-300ER (350 seats)?

United Polaris business class on United Airlines's Boeing 777-300ER (350 seats) has 60 seats, rows 1 to 18, in a 1-2-1 layout, 22-inch-wide seats (lie-flat bed). The pick: rows 2–7, 10–12 and 15–18, seats A and L (set back from the aisle, so it is more private).

What is United Premium Plus like on United Airlines's Boeing 777-300ER (350 seats)?

United Premium Plus on United Airlines's Boeing 777-300ER (350 seats) has 24 seats, rows 20 to 22, in a 2-4-2 layout, 38-inch pitch, 18.5-inch-wide seats (recliner).

How much legroom is there in Economy on United Airlines's Boeing 777-300ER (350 seats)?

Economy on United Airlines's Boeing 777-300ER (350 seats) has about 31 inches of seat pitch and seats about 17.05 inches wide, in a 3-4-3 layout. Exit rows and bulkheads have more legroom.

Read on

Seats Frog compiles seat maps from what airlines publish about their cabins and rates the seats with the same rules on every aircraft. Spotted a wrong row? Tell us and we'll correct it.