How do I track an AWB number starting with 331?

Enter your full 11-digit AWB number (331-XXXXXXXX) in the tracker at the top of this page. TraceAWB will instantly open Azores Airlines's official cargo tracking page with your shipment pre-loaded.

What if my AWB prefix doesn't match any airline?

If your AWB prefix does not match a known airline, it may be a House AWB (HAWB) issued by a freight forwarder rather than the actual airline. For tracking on the airline's official portal, you need the Master AWB (MAWB), which your freight forwarder can provide.

Prefix Decoded

What is AWB Prefix 331?

Q: What airline has AWB prefix 331?

AWB prefix 331 belongs to Azores Airlines (IATA code S4), based in Portugal. All air waybills issued by Azores Airlines start with 331-XXXXXXXX.

Q: How many digits is an IATA AWB prefix?

An IATA AWB prefix is always exactly 3 digits (000–999). It is the first part of an 11-digit air waybill number in the format XXX-XXXXXXXX. Prefix 331 belongs to Azores Airlines.

Q: Is 331 the only AWB prefix for Azores Airlines?

Yes, 331 is the IATA-assigned AWB prefix exclusively for Azores Airlines. Each IATA member airline has a unique 3-digit prefix. Azores Airlines's prefix is 331, so all their air waybills follow the 331-XXXXXXXX format.

AWB prefix 331 is the IATA-assigned airline identification code for Azores Airlines (S4), based in Portugal. Every air waybill issued by Azores Airlines begins with the digits 331, followed by a hyphen and an 8-digit shipment serial number — giving a total of 11 digits in the format 331-XXXXXXXX.

When you see a cargo AWB beginning with 331, you can be certain it was issued by Azores Airlines or by a freight forwarder acting on their behalf. Azores Airlines operates as a Scheduled Cargo & Passenger Network, with its primary hub at Lisbon Humberto Delgado (LIS). Typical air transit times range from 1 to 3 business days depending on origin and destination.

The IATA prefix system assigns a unique 3-digit code to every member airline, ensuring there is no ambiguity in airway bill identification across the global air freight network. Prefix 331 is exclusively reserved for Azores Airlines and cannot be used by any other carrier. For detailed shipment status, use the tracker above to reach Azores Airlines's official tracking portal instantly.

Prefix 331 — Quick Reference

Prefix Number331

Airline

Azores Airlines

IATA CodeS4

ICAO CodeRZO

CountryPortugal

HubLisbon Humberto Delgado (LIS)

AWB Format331-XXXXXXXX

Cargo TypeScheduled Cargo & Passenger Network

Transit Time1–3 days

Official SiteVisit

Format Guide

How to Read an AWB Starting with 331

The 11-digit IATA airway bill number is split into two parts separated by a hyphen. The first three digits (331) tell you instantly which airline issued it.

331

Airline Prefix
→ Azores Airlines

-

12345678

Shipment Serial
(8 digits)

331 always identifies Azores Airlines as the issuing carrier. The 8-digit serial is unique to each shipment. Together: 331-12345678 is a complete, valid Azores Airlines airway bill.

Prefix Lookup

Look Up Any AWB Prefix

Have a different AWB prefix? Enter any 3-digit IATA prefix below to identify the airline and get instant tracking.

Enter Any AWB Prefix

Type the first 3 digits of your airway bill number

Prefix Range 300–399

AWB Prefixes Near 331

Not sure you have the right prefix? Browse nearby IATA AWB prefixes to find the correct airline for your air waybill.

Prefix	Airline	Country	IATA	Track
328	Norwegian	Global	DY	View
329	Norwegian Air Sweden	Global	D8	View
330	Airline GEO SKY	Georgia	D4	View
331 You are here	Azores Airlines	Portugal	S4	Track
333	Viva Aerobus	Global	VB	View
334	Fastjet Zimbabwe	Zimbabwe	FN	View
336	Express Air Cargo	Global	7A	View
350	Air Premia	Korea, Republic of	YP	View

Browse by Range

All AWB Prefix Ranges

IATA assigns AWB prefixes across the full 000–999 range. Browse all prefixes by range to find any airline.

000–099 100–199 200–299 300–399 400–499 500–599 600–699 700–799 800–899 900–999

← See the full AWB prefix index (all 440+ airlines)

FAQ

Frequently Asked Questions about AWB Prefix 331

What airline has AWB prefix 331? +

AWB prefix 331 belongs to Azores Airlines (IATA code S4, ICAO code RZO), based in Portugal. All air waybills with this prefix follow the format 331-XXXXXXXX and were issued by Azores Airlines or by a freight forwarder on their behalf.

How do I track an AWB starting with 331? +

Enter your full 11-digit AWB number — 331-XXXXXXXX — into the tracker at the top of this page and click "Track". TraceAWB identifies prefix 331 as Azores Airlines and opens their official cargo tracking portal with your shipment pre-loaded.

What does AWB prefix 331 mean? +

In the IATA air cargo numbering system, the first three digits of any air waybill identify the issuing airline. Prefix 331 is exclusively assigned to Azores Airlines. The remaining eight digits (after the hyphen) are the unique shipment serial number assigned to your individual cargo. The two parts together form a globally unique shipment identifier: 331-XXXXXXXX.

How many digits is an IATA AWB prefix? +

An IATA AWB prefix is always exactly 3 digits (ranging from 000 to 999). It forms the first part of an 11-digit air waybill number in the standard format XXX-XXXXXXXX. Prefix 331 identifies Azores Airlines. IATA maintains a registry of all assigned prefixes and each is unique to one airline.

What is the difference between a Master AWB and a House AWB? +

A Master Air Waybill (MAWB) is issued by the airline — in this case Azores Airlines — directly to the freight forwarder. It begins with the airline's prefix: 331. A House Air Waybill (HAWB) is issued by the freight forwarder to the individual shipper and uses the forwarder's own numbering system. For tracking on Azores Airlines's official portal, you need the MAWB starting with 331-. If you only have a HAWB, ask your freight forwarder for the corresponding MAWB.

Is 331 the only AWB prefix for Azores Airlines? +

Yes. 331 is the single IATA-assigned AWB prefix exclusively for Azores Airlines. IATA assigns one unique 3-digit prefix per airline. No other carrier uses prefix 331, so whenever you see an airway bill starting with 331, it is guaranteed to be a Azores Airlines shipment.

What if my 331 AWB shows no tracking status? +

Tracking status for a 331 AWB may not appear immediately after booking. It becomes visible only after the cargo has been physically accepted at a Azores Airlines cargo terminal and the AWB has been activated in their system. This typically takes 2–8 hours after acceptance. If your AWB still shows no status after 12 hours, contact Azores Airlines cargo customer service or your freight forwarder directly.