What aircraft does AY143 use?

Finnair flight AY143 operates on a Airbus A350-900 from HEL to BKK.

How long is the AY143 flight?

The estimated flight time for AY143 from HEL to BKK is approximately 10h 23m covering 7,908 km (4,914 miles).

How many seats does this Airbus A350-900 have?

This Finnair Airbus A350-900 has 278 total seats across 3 cabin classes: Business, Premium Economy, Economy.

What cabin classes are available on this aircraft?

This Airbus A350-900 offers 3 cabin classes: Business, Premium Economy, Economy. Seat distribution: 43 Business seats, 24 Premium Economy seats, 211 Economy seats.

What route does AY143 fly?

Finnair flight AY143 operates from HEL (Helsinki Vantaa Airport) to BKK (Suvarnabhumi Airport), connecting Helsinki (Vantaa) and Bangkok.

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.

AY143 Seat Map

● On time

Finnair · Airbus A350-900 · Thu, 30 Oct 2025

Depart

HEL · Helsinki (Vantaa)

10h 23m

4,914 mi

Arrive

BKK · Bangkok

+ Seat alert

J · Business

14/43

W · Premium Economy

3/24

Y · Economy

21/211

Filter:

First Business Premium Economy Economy Extra legroom / exit Occupied Blocked

View:

Business · Premium · Economy · Rows 1–66

100%

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Get seat alerts

Top picks · Business

Highest-scoring available seats on this aircraft

10H

Score 68 #1

Easy aisle access · Near wings (smoother ride)

Aisle Business

11D

Score 68 #2

Easy aisle access · Near wings (smoother ride)

Aisle Business

11H

Score 68 #3

Easy aisle access · Near wings (smoother ride)

Aisle Business

21A

Score 68 #4

Window view · Near wings (smoother ride)

Window Premium Economy

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AY143 Flight Details

Flight Number: AY143

Origin:

(Helsinki Vantaa Airport, Helsinki (Vantaa))

Destination:

(Suvarnabhumi Airport, Bangkok)

Distance: 7,908 km (4,914 mi)

Est. Duration: 10h 23m

Flight Date: October 30, 2025

Aircraft: Airbus A350-900

Airline Routes: View Finnair route map

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Flight Route Map

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Aircraft Configuration

Aircraft Details

Seating info & configuration

Airline: Finnair (AY)
Aircraft: Airbus A350-900
Seating: Main Deck: 278 seats

Economy: 211

21 190 0

10% Available

Premium Economy: 24

3 21 0

13% Available

Business: 43

14 29 0

33% 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

This Airbus A350-900 operates Finnair flight AY143 from Helsinki (Vantaa) (HEL) to Bangkok (BKK). 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 AY143

Based on legroom, location, and passenger preferences

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Best Window Seats

Seat 21A Premium Economy
Seat 36L Economy
Seat 55L Economy

Best Aisle Seats

Seat 10H Business
Seat 11D Business
Seat 11H Business

Quietest Seats

Seat 10H Business
Seat 11D Business
Seat 11H Business

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

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Seat Selection Assistance

Seat Alerts Require Payment

Seat alerts are available to users with a paid plan or credits. This feature monitors seat availability and notifies you when your preferred seats become available.

Reviews

Passenger Reviews for AY143

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Airbus A350-900 Seat Map

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

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AY143 Seat Map

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AY143 Flight Details

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Seat Configuration Statistics

Aircraft Configuration

Aircraft Details

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Best Seats on AY143

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Quietest Seats

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Seat Alerts Require Payment

Passenger Reviews for AY143

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