ABBEVILLE, LA — BNZ

ABBOTSFORD, CANADA — XX

ABERDEEN, MD — APG

ABERDEEN, SD — ABR

ABILENE, TX — ABI

ABRAHAM, IL — AAA

ACADI, LA — AR

ACCOM, VA — BDB

ACORE, IL — CP

ACTIVE PASS, CANADA — AP

ADA, OK — ADH

ADAMS, BARBADOS — BGI

ADDERS, IL — AXC

ADDMO, OK — AI

ADRIAN, MI — ADG

AIKEN, SC — AIK

AINSWORTH, NE — ANW

AIRBE, KY — FK

AIRBO, OH — IL

AIRLI, NC — IL

AITKIN, MN — AIT

AKRON, CO — AKO

AKRON, OH — ACO

AKRON, OH — AK

AKRON/CANTON REGIONAL, OH — CAK

ALAMM, NC — HB

ALAMO, TX — AN

ALAMOSA, CO — ALS

ALBANY, NY — ALB

ALBERT LEA, MN — AEL

ALBUQUERQUE, NM — ABQ

ALCOT, SC — FL

ALCOVY, GA — VOF

ALEXANDRIA, LA — AEX

ALEXANDRIA, MN — AXN

ALGOA, MO — JE

ALIBI, TX — CX

ALICE, TX — ALI

ALLEGHENY, PA — AGC

ALLEN, MS — JA

ALLENDALE, SC — ALD

ALLENTOWN, PA — FJC

ALLER, NC — VU

ALLIANCE, NE — AIA

ALMA, GA — AMG

ALMND, AR — BV

ALPENA, MI — APN

ALPINE, NY — ALP

ALPOS, IL — AL

ALTOONA, PA — AOO

ALTUS, OK — LTS

ALWOOD, NC — AQE

AMASON, TX — CZJ

AMAZON, MO — AZN

AMBASSADOR, TX — ABG

AMBLER, AK — AMF

AMBLER, PA — ING

AMEDEE, CA — AHC

ANAKTUVUK PASS, AK — AKP

ANCHORAGE, AK — ANC

ANCHORAGE, AK — MRI

ANCHORAGE, AK — TED

ANDERSEN, GU — UAM

ANDREWS AFB, MD — ADW

ANDREWS, MD — ADW

ANDREWS, SC — PHH

ANGER, LA — HP

ANIAK, AK — ANI

ANNETTE ISLAND, AK — ANN

ANOKE, NE — EA

ANTHONY, KS — ANY

ANTON CHICO, NM — ACH

ANVIK, AK — ANV

APALACHICOLA, FL — AAF

APPLETON, MN — AQP

APPLETON, OH — APE

ARBOR VITAE, WI — ARV

ARCATA, CA — ACV

ARDMORE, OK — ADM

ARMEL, VA — AML

ARMIN, RI — AR

ARSHA, WI — RH

ARTESIA, NM — ATS

ARVILLA, TX — MJF

ASHEE, NC — JUH

ASHLY, SC — CH

ASTORIA, OR — AST

ATHENS, GA — AHN

ATHENS, TX — AHX

ATIKOKAN, CANADA — IB

ATLANTA, GA — ATL

ATLANTA, TX — ATA

ATLANTIC CITY, NJ — ACY

ATQASUK, AK — ATK

AU SABLE, MI — ASP

AUGUSTA, ME — AUG

AUSTIN, MN — JAY

AUSTN, MI — AZ

AVENAL, CA — AVE

AYLMER, CANADA — YQO