I’ve created vector art silhouettes of the terminals and concourses of airports I’ve visited.
In each full-size image (SVG at default scale, or PNG), one pixel equals one meter. (The thumbnails each show a square 1.33 km or 0.83 miles on each side.) True north is always up.
Gallery

ABI

AEY

ABQ

AMA

ANC

ATL

AKL

AUS

BFL

BWI

TXL

BHM

BOS

BUR

CHS

CLT

MDW

ORD

CHC

CVG

CLE

COS

CMH

DAL

DFW

DAY

DEN

DSM

VPS

DTW

DUD

FAY

FLG

FLL

FRA

BDL

HEL

ITO

HNL

IAH

HSV

IND

JAX

OAJ

MCI

GRK

LAS

LAW

LIT

LGW

LHR

LAX

LBB

MHT

MEL

MIA

MKE

MSP

MUC

MYR

OKA

BNA

MSY

JFK

LGA

EWR

PHF

ORF

XNA

NUE

OKC

ONT

SNA

MCO

CDG

PNS

PIA

PER

PHL

PHX

PIT

PWM

PDX

PVD

RDU

RAP

RKV

KEF

RIC

SLC

SAT

SAN

SFO

SJC

SJU

SAV

SEA

STL

ARN

STR

SYD

TLH

TPA

HND

NRT

TOL

YYZ

TUS

TUL

VLD

YVR

IAD

DCA

ICT

SPS

AVP

ILM

ZRH
I’ve also drawn silhouettes of some other buildings.
Technical Details
I draw these silhouettes as SVG vector images with Inkscape, an open source vector graphics editor.
My primary references are Google Earth and Bing Maps satellite imagery, supplemented by other satellite imagery, terminal maps on airport websites, airport photos and videos, and my own memory of each airport.
Paul Bogard created these terminal silhouette illustrations, and has made them available for use under a CC BY-SA 4.0 License.