Can Foreigners Be Denied Entry into Singapore?

Singapore is one of the world’s most open and well-connected countries, welcoming millions of visitors, students, and business travellers annually – in January 2026 alone, the city-state recorded 1.5 million international visitor arrivals.

But while travelling to Singapore might seem straightforward with a valid passport and visa, entry is not a legal right, and foreigners can – and have – indeed been denied entry under Singapore law.

This article outlines the laws and policies governing entry into Singapore, why and how authorities can refuse admission, and what travellers should keep in mind prior to arriving in Singapore. It will cover:

• Whether there is guaranteed entry into Singapore for foreign visitors
• What is the new ‘No-Boarding Directive’?
• Under what grounds might someone be denied entry into Singapore?
• What should travellers take note of before travelling to Singapore?

Is There Guaranteed Entry into Singapore for Foreign Visitors?

Being a foreigner with a passport and visa does not guarantee entry into the country. The Immigration Act empowers the Immigration & Checkpoints Authority (ICA) to control Singapore’s borders for the purposes of national security, public order, public health, and immigration management.

When a foreigner arrives in Singapore, whether by air, sea, or land, ICA officers have the discretion to assess their eligibility for entry. Entry can be conditional: travellers may be interviewed, asked for additional proof of purpose or funds, and assessed on whether they meet all requirements. ICA has stressed on previous occasions that “a foreigner’s entry into Singapore is neither a right nor automatic”, and “each visitor’s entry is considered on its own merits.”

In addition, Singapore’s border security regime includes provisions that allow authorities to refuse boarding or entry to certain travellers not only at the checkpoint but also before departure, as part of the new ‘No-Boarding Directive’ introduced in January 2026 (discussed in the next section).

What is the New ‘No-Boarding Directive’?

From 30 January 2026, ICA began issuing No-Boarding Directives (NBDs) to airline operators at Changi and Seletar Airports to prevent “undesirable or prohibited immigrants, and those who do not meet Singapore’s entry requirements” from boarding flights bound for Singapore. For a more detailed discussion on this directive, you can refer to our article on Singapore’s new laws under the Immigration Act.

Prior to the introduction of NBDs, ICA would identify what it deems as high-risk travellers, i.e. those who pose a health, security or immigration threat – before they arrive at our checkpoints by referring to traveller information provided in the SG Arrival Card, flight manifests and other sources of data. These travellers would be flagged for more stringent screening checks when they clear immigration.

Now, ICA will issue NBD notices to airlines against identified prohibited or undesirable travellers (i.e. individuals with previous criminal records, immigration offences such as overstaying or who are deemed a security risk). Airlines that receive an NBD notice must deny boarding to the affected traveller before the flight departs.

Notices can also be issued against travellers who do not meet entry requirements. Travellers subject to an NBD, but who still wish to enter Singapore, must seek approval from ICA (e.g. via the ICA Feedback Channel) before arranging a new flight.

Notably, airline operators that fail to comply with the rules can be fined up to S$10,000, while related individuals (e.g. an employee of the airline operator) are liable to a fine of up to S$10,000 and/or a jail term of up to 6 months.

Under What Grounds Might Someone be Denied Entry into Singapore?

Even when a foreigner successfully boards a flight and lands at Singapore’s checkpoints, ICA still retains the authority to refuse entry. For example, entry can be refused for a failure to meet public health requirements (e.g. a valid yellow fever vaccination certificate for travellers with recent travel to countries with risk of yellow fever transmission) and refusal of any tests and/or quarantine.

These basic checks are conducted at the relevant immigration counters, and failure to satisfy the entry requirements into the country can lead to refusal of entry.

Security, public order, or immigration history concerns

ICA has broad discretion to refuse entry if a person’s presence is judged to pose a threat to Singapore’s security and public order.

Some instances where foreigners were denied entry into Singapore include:

• Hong Kong political activist Nathan Law, who was denied entry to Singapore in 2025 as his presence was deemed to be against “Singapore’s national interests”. He had arrived at Changi Airport from San Francisco and was referred for questioning, immigration and security assessment. He was subsequently denied entry and placed on the earliest available flight back to San Francisco. Law had fled Hong Kong in 2020, and had a warrant of arrest issued against him by the Hong Kong Police. Despite being a visa holder, the authorities highlighted that they are still subject to further checks at the point of entry.
• In late January 2026, a Chinese influencer alleged that she was stopped and detained at Changi Airport for two days before being deported to China. She had been referred for further checks during immigration clearance, including an interview and search of her belongings. According to ICA, she was unable to provide a clear itinerary for her visit to Singapore and did not have an onward ticket. She was also evasive about her claims that she was in the country to visit her sister, and her phone showed messages of her being coached to address potential questions from immigration officers.
• Similarly, a Taiwanese influencer reported being refused entry allegedly over suggestive content found on her mobile phone. While ICA does not publicly disclose the specific reasons for individual refusals beyond general criteria, it stressed that entry into Singapore “is neither a right nor automatic” for foreign visitors, and that each visitor’s entry is assessed on its own merits at the checkpoints upon arrival.

What Should Travellers Take Note of Before Travelling to Singapore? 

Prospective visitors and foreign nationals who are planning to enter Singapore should keep in mind the following:

• Check the visa and travel document requirements for your country carefully before booking your trip to Singapore.
• Ensure your passport is valid for at least six months beyond your intended duration of stay.
• Be prepared to clearly articulate your purpose of visit, accommodation, and onward travel plans.
• Recognise that even with a valid visa, entry can be refused at the border if officers determine you do not meet requirements.

Finally, do keep in mind that under the new NBD regime, airlines may refuse boarding if ICA flags you as ineligible even before departure.

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Foreign visitors should keep in mind that there is no automatic right of entry into Singapore, with visitors subject to entry requirements as well as additional interviews or checks before being allowed into the country.

Visitors are strongly advised to visit ICA’s website or contact ICA for further information on entry requirements prior to their travels.