Supplier Portal

Become an SIA supplier

OUR POLICIES

Our expectations

At SIA, we are committed to building strong, long-term relationships with our suppliers, grounded in trust, sustainability, quality, and innovation. Together, we ensure excellence across every aspect of our global operations.

To foster strong and transparent partnerships, we have established a framework of policies that guide every aspect of our working relationships. These policies reflect our commitment to ethical business practices, regulatory compliance, and sustainable operations, ensuring mutual success for SIA and its suppliers. 

Below, you’ll find an overview of our key policies, which our suppliers must adhere to. We strongly advise all current and prospective suppliers to familiarize themselves with these guidelines to maintain a robust and compliant relationship with SIA. For more details, please refer to the details in the contract.

Supplier's code of conduct
Supplier's code of conduct

Singapore Airlines expects suppliers to act with integrity, protect information, treat people fairly, deliver safe, environmentally responsible services, manage conflicts transparently, and hold subcontractors accountable.

Anti-bribery & corruption
Anti-bribery & corruption

Our suppliers must comply with all anti-bribery and corruption laws. We strictly prohibit offering payments or gifts to improperly influence any individual or to secure an improper business advantage.

Data protection
Data protection

Suppliers must protect confidential and personal data and comply with applicable data protection laws at all times.

Liability, indemnity and insurance
Liability, indemnity and insurance

We expect suppliers to be fully liable for all claims and losses arising from their products, services, or any breach of agreement. We also expect suppliers to maintain sufficient insurance to cover these liabilities.

Risk management
Risk management

To ensure continued support during operational disruptions, suppliers must implement a Business Continuity Plan. In such an event, suppliers must promptly notify SIA and follow all instructions to restore services.

No PO, no pay
No PO, no pay

Generally, all purchases must be issued with a Purchase Order (PO) in order for us to process the invoice and issue the payment to suppliers.

 

 

 

BECOMING AN SIA SUPPLIER

Here's how you can become an SIA Supplier:
Create an SAP Business Network account
Create an SAP Business Network account

Create an SAP Business Network account via this link.

 

Creating a standard SAP Business Network account is free of charge.

You may consider upgrading to an enterprise SAP Business Network account, which comes with additional fees per SAP’s policies. For more details, please refer to this link.

 

After you have created your account, please refer to this video for a guide on how to set up your account.

If you already have an SAP Business Network account, you may proceed to the next step.

Join SIA's supplier network on Ariba
Join SIA's supplier network on Ariba

Sign up to our Ariba network to join our pool of suppliers via this link. Our supplier management team will review your request and you will be notified of the outcome.

Participate in SIA's sourcing events
Participate in SIA's sourcing events

After our supplier management team has reviewed and approved your request, you may be invited to participate in our sourcing events. Alternatively, SIA may have open sourcing events available on SAP Business Network Discovery which you may be able to participate in.

Contract Award & Registration
Contract awarding & registration

After you have been shortlisted to be awarded a contract by SIA, you will be invited to complete your registration with us to facilitate ordering & invoicing.

Make sure you have completed all of the necessary steps below:

  • Created your SAP Business Network supplier account
  • Accepted SIA's trading relationship request (TRR)
  • Completed set-up for PO & invoice notifications
  • Provided bank details

Transacting
Transacting

Congratulations! You are now a part of Singapore Airlines' esteemed Suppliers and are ready to transact with us via Ariba.

Purchase Orders and invoicing will be exchanged electronically on the network.

FROM PROCURE-TO-PAY

Process flow

Here's a step-by-step guide of the process flow from sourcing, all the way to payment.

SIA will run sourcing events on Ariba. Events may be "Closed" events or "Open" events.

  • "Closed" events are invite-only, in which suppliers on SIA's supplier network will receive an email notification with a link to participate. 
  • "Open" events are published publicly on SAP Business Network Discovery, and suppliers may respond directly to the posting.

 

To be considered for sourcing events, register on SIA's Supplier Network and keep your company profile, categories, and documents up to date..

Before participating, you may be asked to accept confidentiality terms and acknowledge SIA’s policies. During the event, please direct all questions through Ariba's message board system; off‑platform contact/queries are not permitted.

For more details such as the scope, timelines and submission requirements, please refer to the specfic event document.

Use the Ariba event message board for all clarifications; off‑platform contact is not permitted.

We evaluate proposals holistically - considering capability, quality, safety, sustainability, total cost of ownership, risk, innovation, and compliance.

Please refer to this video for a step-by-step guide on how to participate in SIA's sourcing events on Ariba.

Following selection/award, we’ll invite you to connect on SAP Business Network and complete a brief set of registration tasks:

  • Complete a registration questionnaire and provide details such as business registration numbers and most recent financial statements.
  • Acknowledge key policies (Suppliers’ Code of Conduct, anti‑bribery, data protection).
  • Accept our trading relationship request (using the ANID that matches the contracting legal entity).
  • Complete your company profile on SAP Business Network.
  • Provide banking details and complete supplier callback verification process. 

 

Assign your portal users and set notification preferences for POs and invoices. We’ll confirm when onboarding is complete and your vendor record is active. Do not commence work until onboarding is approved, the contract is executed (if applicable), and a valid purchase order has been issued.

Please see this video for a walkthrough of the supplier registration questionnaire.

You’ll receive the draft agreement (with the relevant clauses) through Ariba for review. The contract will set out deliverables, acceptance criteria, pricing and payment terms, timelines, and performance/KPIs where applicable.

Contracts are executed via e‑signature; once countersigned, the final copy will be shared to you.

Please refer to this video for reviewing contracts, and this video for negotiating contracts, for a step-by-step guide on how to navigate Ariba's Contract Workspace.

Singapore Airlines will issue the Purchase Order (PO) which is the formal authorisation to supply. You’ll receive the PO electronically via Ariba, detailing the contract reference, line items, quantities, unit prices, taxes, Incoterms, ship‑to/bill‑to locations, delivery dates, and any specifications or attachments.

Review and acknowledge promptly; raise discrepancies with the listed buyer before acting. Do not start work or ship goods without a valid PO—only the scope on the PO is authorised. Any changes to quantity, price, dates, scope, or delivery instructions must be endorsed and actioned/advised by SIA. Request for an approved PO change order; do not rely on verbal/email instructions.

Please refer to this video for a guide on navigating the PO screens in Ariba.

After you have received the PO, please proceed to fulfill the order in a timely manner, in accordance with the lead time provided in the purchase order and contract.

Follow delivery instructions precisely, including packing, labelling, serial/lot IDs, export/import documents, and advance shipment notices where required. 

Upon arrival, SIA will perform receipt and quality/quantity checks; discrepancies, damage, or non‑conformances will be recorded and managed via repair, replacement, or return (RMA). Partial deliveries must be communicated in advance. Acceptance will be confirmed via the portal through Goods Receipt (GR) for goods or Service‑Entry Sheet (SES) for services.

After acceptance by SIA, you will be able to perform invoicing.

Please refer to this video on how to identify if your PO has been received successfully by SIA.

After fulfillment is confirmed by SIA, you may submit invoices through Ariba by using PO‑flip. Issue one invoice per GR, referencing the PO and line items exactly; you cannot invoice ahead of delivery of goods or without acceptance for services.

Invoices must match the PO; changes require an approved PO amendment, not a price override. We use three‑way matching; payment terms start from receipt of a valid, matchable invoice. Track the status and promptly notify SIA of any invoices that failed to post.

Please refer to this video on how to submit an invoice through Ariba.

Taulia’s early payment programme

SIA has partnered with Taulia, a market-leading provider of invoice, payment, and working capital management solutions, to offer an optional early payment programme for suppliers.

Through the Taulia Platform, eligible suppliers can choose to receive early payment on approved invoices in exchange for a small discount. This programme enables suppliers to better manage their cash flow and select when they would like to be paid early. Participation is entirely voluntary, with no change to suppliers’ existing invoicing process.

For more details, kindly visit: Singapore Airlines Taulia Supplier Platform | Taulia

FAQs

Frequently asked questions

Singapore Airlines partners with qualified, ethical suppliers that can safely, reliably, and competitively deliver the goods and services we need. We welcome suppliers of all sizes, including SMEs. Increase your chances of being selected as an SIA supplier by ensuring that you register on our supplier network, select the appriopriate categories of goods and services your company supplies, and keep your information up-to-date.

SIA procures a broad range of aviation, operational, and corporate categories to support our global operations. Examples include (but aren’t limited to):

  • Aircraft and engineering: airframe/engine spares, components, tools/GSE, MRO and repairs, engineering services, technical data, fuel and lubricants, de‑icing.
  • Airport and ground operations: ground handling, ramp services, lounges, security, cargo handling/warehousing, catering uplift, cabin cleaning, waste and water services.
  • Cabin and inflight: catering (food & beverage), galley equipment and tableware, linens and amenity kits, uniforms, cabin interiors and refurbishment, safety equipment, IFE/IFC hardware, software and content.
  • IT and digital: infrastructure, cloud/SaaS, cybersecurity, networks/telecoms, devices, software development, data/analytics, contact centre and payment solutions.
  • Facilities and logistics: facilities management, utilities, construction/fit‑out, maintenance, cleaning, waste/recycling, vehicles/fleet, warehousing, freight and last‑mile logistics.
  • Corporate and professional services: consulting, legal, audit, HR/recruitment, training, medical/occupational health, travel, marketing/creative/PR, printing and merchandise.
  • Sustainability and compliance: ESG advisory, EHS services, energy efficiency, carbon accounting/offsets, sustainable aviation fuel partnerships.

We highly encourage all suppliers to transact with us via SAP Business Network, as it streamlines ordering and e‑invoicing, provides real‑time status visibility, and can enable faster, more accurate payments. Suppliers who decline to participate in our digitalisation journey may risk losing business with us.

To register as a prospective supplier with SIA:

  • Create an SAP Business Network Account and complete your profile.
  • Register on our supplier network. Ensure to select the appriopriate categories of goods and services your company supplies.
  • Participate in our sourcing events by submitting competitive and quality proposals. Actively keep an eye out for SIA's open events on SAP Business Network Discovery.

Creating a standard SAP Business Network account is free of charge.

You may consider upgrading to an enterprise SAP Business Network account, which comes with additional fees. For more details please refer to this link.

If you choose to subscribe for any fee-based accounts or services from SAP, all costs will be borne by you. We do not cover any costs incurred for any enterprise accounts or other services.

A standard SAP business network account is sufficient and recommended to transact with us.

To participate in our sourcing events, please sign up to SIA's Ariba platform. After your request has been approved by our supplier management team, you may be invited to participate in our sourcing events.

SIA will invite you directly through your registered email for any "Closed" events. Some events may be available publicly on SAP Business Network Discovery as "Open" events.

SIA runs most sourcing events through SAP Business Network. For selected events, we may also use SAP Business Network Discovery. To improve visibility, keep your SAP Business Network and SIA supplier network profiles current with accurate categories, regions, and contacts, and set email alerts.

One SAP Business Network account (ANID) should be used per legal entity, to link to SIA. Use the account that matches the legal entity contracting and invoicing SIA.

If multiple legal entities supply SIA, each may use its own ANID to establish a trading relationship with SIA. If connection invite lands in the wrong account, request us to re‑invite to the correct ANID.

You can create an Ariba account hierarchy (parent/child) for central visibility and user access, but documents can’t be moved between ANIDs.  For assistance, contact SIA supplier support; for platform help, refer to SAP Business Network support.

 

You will only need to register one ANID to transact with both Singapore Airlines and SIA Engineering Company. The trading relationship will be under the name of Singapore Airlines Ltd. Please visit SIAEC's website for their specific supplier information and processes.

 

For more FAQs, please click here.

For any queries related to SAP Ariba, kindly contact SAP Customer Support.

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