The prefix 'U' is used for Russia and all the former Soviet republics except Moldova (LU), Estonia (EE), Latvia (EV) and Lithuania (EY). Each former Soviet republic or group of them is assigned a 2-character (Ux) prefix and Russia has 10 prefixes. The only exception is the prefix UM, which, while used for Belarus airports, is also used for a single airport (UMKK) in Russia (in the Kaliningrad Oblast exclave). For this reason, there is a UM second-level section under Russia as well as the first level section UM – Belarus.
Prior to breakup of the Soviet Union, Latvian SSR and Lithuanian SSR used prefix UM, Estonian SSR used UL and Moldavian SSR used UK.
Format of entries is: ICAO (IATA) – airport name – airport location
U – Russia (Russian Federation)
UE (Yakutia) UEEA (ADH) – Aldan Airport – Aldan UEEE (YKS) – Yakutsk Airport – Yakutsk UELL (NER) – Chulman Neryungri Airport – Chulman UEMM (GYG) – Magan Airport – Magan, Russia, Sakha Republic UENN (NYR) – Nyurba Airport – Nyurba, Sakha Republic UENW (VYI) – Vilyuysk Airport – Vilyuysk, Sakha Republic UERO (ONK) – Olenyok Airport – Olenyok, Sakha Republic UERP (PYJ) – Polyarny Airport – Polyarnyj (near Udachny, not Polyarny, Murmansk Oblast) UERR (MJZ) – Mirny Airport – Mirny UESG (BGN) – Belaya Gora Airport – Belaya Gora, Sakha Republic UESO (CKH) – Chokurdakh Airport – Chokurdakh UESS (CYX) – Chersky Airport – Chersky UEST (IKS) – Tiksi Airport – Tiksi UESU (ZKP) – Zyryanka Airport – Zyryanka, Verkhnekolymsky District, Sakha Republic
UH (Far East) UHBB (BQS) – Ignatyevo Airport – Blagoveschensk UHBI (GDG) – Magdagachi Airport – Magdagachi UHHH (KHV) – Khabarovsk Novy Airport – Khabarovsk UHKK (KXK) – Komsomolsk-on-Amur Airport – Komsomolsk-on-Amur UHMA (DYR) – Ugolny Airport – Anadyr UHMD (PVS) – Provideniya Bay Airport – Provideniya UHMK (KPW) – Keperveyem Airport – Keperveyem, Chukotka Autonomous Okrug UHMM (GDX) – Sokol Airport – Magadan UHMO (KVM) – Markovo Airport – Markovo, Chukotka Autonomous Okrug UHMP (PWE) – Pevek Airport – Pevek UHPP (PKC) – Yelizovo Airport – Petropavlovsk-Kamchatsky UHPX – Nikolskoye Airport – Nikolskoye, Kamchatka Krai UHSH (OHH) – Okha Airport – Okha UHSS (UUS) – Yuzhno-Sakhalinsk Airport – Yuzhno-Sakhalinsk UHWW (VVO) – Vladivostok International Airport – Vladivostok
UI (Eastern Siberia) UIAA (HTA) – Kadala Airport – Chita UIBB (BTK) – Bratsk Airport – Bratsk UIII (IKT) – Irkutsk International Airport – Irkutsk UIKE (ERG) – Erbogachen Airport – Yerbogachen UITT (UKX) – Ust-Kut Airport – Ust-Kut UIUU (UUD) – Mukhino Airport – Ulan-Ude
UL (Northwest) ULAA (ARH) – Talagi Airport – Arkhangelsk ULAH (VKV) – Vaskovo Airport – Arkhangelsk Oblast ULAL (LDG) – Leshukonskoye Airport – Arkhangelsk ULAM (NNM) – Naryan-Mar Airport – Naryan-Mar ULDD (AMV) – Amderma Airport – Amderma ULKK (KSZ) – Kotlas Airport – Kotlas ULLI (LED) – Pulkovo Airport – Saint Petersburg ULMM (MMK) – Murmansk Airport – Murmansk ULOL (VLU) – Velikiye Luki Airport – Velikiye Luki ULOO (PKV) – Pskov Airport – Pskov ULPB (PES) – Besovets Airport – Petrozavodsk ULSS (RVH) – Rzhevka Airport – Saint Petersburg ULWW (VGD) – Vologda Airport – Vologda
UM (Kaliningrad exclave) Also see UM – Belarus section below, for airports in Belarus
UMKK (KGD) – Khrabrovo Airport – Kaliningrad
UN (Western Siberia) UNAA (ABA) – Abakan Airport – Abakan UNBB (BAX) – Barnaul Airport – Barnaul UNCC (in METAR reports UNNN) – Severny Airport – Novosibirsk UNEE (KEJ) – Kemorovo Airport – Kemerovo UNIP (TGP) – Podkamennaya Tunguska Airport – Podkamennaya Tunguska, Krasnoyarsk UNIW – Vanavara Airport – Vanavara UNKL (KJA) – Krasnoyarsk Yemelyanovo Airport – Krasnoyarsk UNKY (KYZ) – Kyzyl Airport – Kyzyl UNNT (OVB) – Novosibirsk Tolmachevo Airport – Novosibirsk UNOO (OMS) – Tsentralny Airport – Omsk UNTT (TOF) – Bogashevo Airport – Tomsk UNWI – Tashtagol Airport – Tashtagol UNWW (NOZ) – Novokuznetsk Spichenkovo Airport – Novokuznetsk
UO (Central Siberia) UODD (DKS) – Dikson Airport – Dikson UOHH (HTG) – Khatanga Airport – Khatanga UOOO (NSK) – Norilsk Airport – Norilsk UOTT (THX) – Turukhansk Airport – Turukhansk
UR (South and Caucasus)