What aircraft does KL621 use?

KLM Royal Dutch Airlines flight KL621 operates on a Boeing 777-200 from AMS to ATL.

How long is the KL621 flight?

The estimated flight time for KL621 from AMS to ATL is approximately 9h 20m covering 7,066 km (4,390 miles).

How many seats does this Boeing 777-200 have?

This KLM Royal Dutch Airlines Boeing 777-200 has 288 total seats across 3 cabin classes: Business, Premium Economy, Economy.

What cabin classes are available on this aircraft?

This Boeing 777-200 offers 3 cabin classes: Business, Premium Economy, Economy. Seat distribution: 35 Business seats, 24 Premium Economy seats, 229 Economy seats.

What route does KL621 fly?

KLM Royal Dutch Airlines flight KL621 operates from AMS (Amsterdam Airport Schiphol) to ATL (Hartsfield Jackson Atlanta International Airport), connecting Amsterdam and Atlanta.

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.

KL621 Seat Map

● On time

KLM Royal Dutch Airlines · Boeing 777-200 · Fri, 24 Oct 2025

Depart

AMS · Amsterdam

9h 20m

4,390 mi

Arrive

ATL · Atlanta

+ Seat alert

J · Business

26/35

W · Premium Economy

18/24

Y · Economy

154/229

Filter:

First Business Premium Economy Economy Extra legroom / exit Occupied Blocked

View:

Business · Premium · Economy · Rows 1–43

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Get seat alerts

Top picks · Economy

Highest-scoring available seats on this aircraft

30A

Score 80 #1

Extra legroom · Quick exit access

Extra legroom

18D

Score 68 #2

Easy aisle access · Premium seat

Aisle

17H

Score 68 #3

Easy aisle access · Premium seat

Aisle

17G

Score 68 #4

Easy aisle access · Premium seat

Aisle

Get Seat Alerts

KL621 Flight Details

Flight Number: KL621

Origin:

(Amsterdam Airport Schiphol, Amsterdam)

Destination:

(Hartsfield Jackson Atlanta International Airport, Atlanta)

Distance: 7,066 km (4,390 mi)

Est. Duration: 9h 20m

Flight Date: October 24, 2025

Aircraft: Boeing 777-200

Airline Routes: View KLM Royal Dutch Airlines route map

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Flight Route Map

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View flights from AMS View flights to ATL View KLM Royal Dutch Airlines route map

Aircraft Configuration

Aircraft Details

Seating info & configuration

Airline: KLM Royal Dutch Airlines (KL)
Aircraft: Boeing 777-200
Seating: Main Deck: 288 seats

Economy: 229

154 67 8

67% Available

Premium Economy: 24

18 6 0

75% Available

Business: 35

26 9 0

74% 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

KLM Royal Dutch Airlines Boeing 777-200 seat map layout for flight KL621 from AMS to ATL — Reference layout

This Boeing 777-200 operates KLM Royal Dutch Airlines flight KL621 from Amsterdam (AMS) to Atlanta (ATL). 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 KL621

Based on legroom, location, and passenger preferences

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Best Window Seats

Seat 30A Economy
Seat 23K Economy
Seat 23A Economy

Best Aisle Seats

Seat 18D Economy
Seat 17H Economy
Seat 17G Economy

Best for Legroom

Seat 30A Economy

Exit Row Seats

Seat 30A Economy

Quietest Seats

Seat 7G Business
Seat 11D Premium Economy
Seat 11A Premium Economy

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

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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.

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