What aircraft does OZ521 use?

Asiana Airlines flight OZ521 operates on a Airbus A350-900 from ICN to LHR.

How long is the OZ521 flight?

The estimated flight time for OZ521 from ICN to LHR is approximately 11h 35m covering 8,861 km (5,506 miles).

How many seats does this Airbus A350-900 have?

This Asiana Airlines Airbus A350-900 has 311 total seats across 2 cabin classes: Business, Economy.

What cabin classes are available on this aircraft?

This Airbus A350-900 offers 2 cabin classes: Business, Economy. Seat distribution: 28 Business seats, 283 Economy seats.

What route does OZ521 fly?

Asiana Airlines flight OZ521 operates from ICN (Incheon International Airport) to LHR (London Heathrow Airport), connecting Seoul and London.

How do I choose the best seat?

The best seat depends on your priorities. For extra legroom, choose seats near emergency exits or bulkhead rows. For quick boarding/deplaning, select seats near the front. Avoid seats near lavatories or galleys if you prefer a quieter flight. Window seats offer views and a wall to lean against, while aisle seats provide easier access to move around.

What do the different seat colors mean?

Green seats are typically available for selection, red seats are occupied or blocked, yellow/orange seats may have restrictions or extra fees, and blue seats often indicate premium or preferred seating with additional charges. Hover over any seat to see specific details and pricing.

Can I change my seat after booking?

Yes, most airlines allow seat changes after booking, though fees may apply depending on your fare type and desired seat. You can typically change seats through the airline's website, mobile app, or by calling customer service. Some seats become available closer to departure as the airline releases blocked inventory.

When is the best time to select seats?

The best time varies by strategy. Book immediately after purchasing your ticket for the widest selection, or wait until 24 hours before departure when airlines often release blocked premium seats. For popular routes, early selection is recommended. Our seat alerts can notify you when preferred seats become available.

Are the seat maps updated in real-time?

Our flight seat maps are updated regularly throughout the day to reflect current availability. However, seat availability can change rapidly, especially close to departure. We recommend checking the airline's official website for the most up-to-date information when making your final selection.

What if my preferred seat isn't available?

You can also check back periodically as seats often open up closer to departure when other passengers make changes or when the airline releases additional inventory.

OZ521 Seat Map

● On time

Asiana Airlines · Airbus A350-900 · Fri, 24 Oct 2025

Depart

ICN · Seoul

11h 35m

5,506 mi

Arrive

LHR · London

+ Seat alert

J · Business

15/28

Y · Economy

214/283

Filter:

First Business Premium Economy Economy Extra legroom / exit Occupied Blocked

View:

Business · Economy · Rows 1–43

100%

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Get seat alerts

Top picks · Economy

Highest-scoring available seats on this aircraft

12C

Score 83 #1

Extra legroom · Easy aisle access

Extra legroom

12A

Score 83 #2

Extra legroom · Window view

Extra legroom

12D

Score 83 #3

Extra legroom · Easy aisle access

Extra legroom

30A

Score 68 #4

Quick exit access · Window view

Exit row

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OZ521 Flight Details

Flight Number: OZ521

Origin:

(Incheon International Airport, Seoul)

Destination:

(London Heathrow Airport, London)

Distance: 8,861 km (5,506 mi)

Est. Duration: 11h 35m

Flight Date: October 24, 2025

Aircraft: Airbus A350-900

Airline Routes: View Asiana Airlines route map

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Flight Route Map

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Aircraft Configuration

Aircraft Details

Seating info & configuration

Airline: Asiana Airlines (OZ)
Aircraft: Airbus A350-900
Seating: Main Deck: 311 seats

Economy: 283

214 26 43

76% Available

Business: 28

15 5 8

54% Available
Legend: Seat Status

Blocked

Occupied

Standard

Cabin Classes

First

Business

Premium Economy

Economy

Extra legroom / exit

Features

Exit door

WC Lavatory

GALLEY Galley

CREW Crew area

Asiana Airlines Airbus A350-900 seat map layout for flight OZ521 from ICN to LHR — Reference layout

This Airbus A350-900 operates Asiana Airlines flight OZ521 from Seoul (ICN) to London (LHR). Browse the interactive seat map above to find the best seats for your journey, view real passenger reviews, and explore detailed cabin configurations to make an informed decision for your flight.

Best Seats on OZ521

Based on legroom, location, and passenger preferences

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Best Window Seats

Seat 12A Economy
Seat 12K Economy
Seat 14A Economy

Best Aisle Seats

Seat 14C Economy
Seat 12H Economy
Seat 12G Economy

Best for Legroom

Seat 12C Economy
Seat 12A Economy
Seat 12D Economy

Exit Row Seats

Seat 30A Economy
Seat 30K Economy
Seat 29B Economy

Quietest Seats

Seat 14A Economy
Seat 12K Economy
Seat 12H Economy

Recommendations based on seat characteristics, cabin position, and proximity to facilities. Availability may vary by date.

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Reviews

Passenger Reviews for OZ521

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Airbus A350-900 Seat Map

Full Asiana Airlines Airbus A350-900 seating chart, cabin layout, and seat reviews.

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Aircraft Configuration

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Best Seats on OZ521

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Best for Legroom

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Passenger Reviews for OZ521

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Airbus A350-900 Seat Map

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