
As of 26 January 2021, the US Centers for Disease Control and Prevention (CDC) requires all passengers arriving in the US from international locations to take a pre-departure COVID-19 test. Passengers must be tested within three days of their departure and must provide proof of a negative result or documentation of recovery from COVID-19. This rule applies to all aircraft operators, including non-commercial operators. The CDC has stated that testing, when combined with staying at home, wearing masks, and social distancing, can make travel safer and healthier by reducing the spread of COVID-19 in planes, airports, and destinations. However, the US government does not currently require negative COVID-19 tests for domestic travellers, although a CDC director has stated that the agency is actively looking at implementing such a requirement.
US Airports and COVID Testing Requirements
| Characteristics | Values |
|---|---|
| Who needs to be tested? | All passengers aged 2 and above, regardless of vaccination status or citizenship. |
| When to take the test? | No more than 1 day before flying into the US. |
| Type of test | A negative COVID-19 viral test result. Nucleic acid amplification tests (NAATs), including PCR tests, are more likely to detect the virus than antigen tests. |
| Test validity | The test must be taken no more than 1 day before flying into the US. For travel to the US Virgin Islands, the test must be taken within 5 days of travel. |
| Proof of recovery | If you have recently recovered from COVID-19, you can travel with COVID recovery documentation. The positive test result date should be no more than 90 days before departure. |
| Additional requirements | LAX requires all non-US citizens and non-US immigrants to provide proof of full vaccination. Face masks and social distancing are also mandatory at the airport. |
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What You'll Learn

Testing requirements for travellers to the US from China
As of March 2023, the US has planned to lift the COVID-19 testing requirements for travellers from China. This decision comes after the US joined other countries in implementing COVID-19 testing requirements for travellers from China, Hong Kong, or Macao in early January 2023. The initial requirement stated that travellers aged 2 and above flying from China must present a pre-departure negative COVID-19 test, taken no more than two days before departure.
Previously, the US Centers for Disease Control and Prevention (CDC) required all air travellers who were not US citizens or lawful permanent residents to be fully vaccinated before entering the country. Additionally, travellers to the US, regardless of vaccination status or citizenship, were mandated to provide a negative COVID-19 viral test result. The test must be taken no earlier than one day before travelling to the US, and the negative test result must be submitted to the airline before boarding. Alternatively, individuals could provide documentation of recovery from COVID-19, with the positive test result dated no more than 90 days before departure.
It is important to note that individual US airports may have varying protocols in place. For example, Los Angeles International Airport (LAX) requires all non-US citizens and non-US immigrants travelling to Los Angeles to provide proof of full vaccination against COVID-19. Additionally, travellers must wear high-quality masks, carry hand sanitizers, and maintain social distancing within the airport.
While the US has announced its plan to lift the COVID-19 testing requirement for travellers from China, it is important for travellers to stay updated and informed as the situation may change. Travellers should refer to official government sources and the websites of the specific US airport they are travelling to for the most up-to-date information on testing and vaccination requirements.
Additionally, China has issued a travel warning for its citizens travelling to the US, citing the deterioration of China-US economic and trade relations, as well as concerns related to the domestic security situation in the US. Chinese tourists are advised to carefully assess the risks and exercise caution when considering travel to the US.
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Testing requirements for travellers to the US Virgin Islands
The US Virgin Islands have established health protocols to control the spread of COVID-19. Travellers to the US Virgin Islands must complete an online application known as Travel Screening, and take a coronavirus test before arrival. The test must be a negative COVID-19 test within 5 days of travel. The test must be a Nucleic Acid Amplification Test (NAAT), including a PCR test, which is more likely to detect the virus than an antigen test. The date of the sample for the COVID-19 test result must be no more than 90 days before departure from a foreign country.
Upon arrival, the US Virgin Islands authorities will conduct medical checks at the airport. Travellers must be healthy when they arrive on the islands. The CDC has also advised that travellers delay their journey until they are up to date with their COVID-19 vaccines, including any booster doses.
Travellers from eligible countries landing at LAX will need to present proof of COVID-19 vaccination and a negative COVID-19 test no later than three days before departure. Before boarding a flight to LAX, travellers must show proof of vaccination or a COVID-19 test. Masks must be worn at the airport, and hand sanitiser/wipes should be carried. Social distancing must also be maintained at the airport and on airport shuttles.
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Testing requirements for travellers to LAX
As of June 2022, the Biden administration has lifted the requirement for international air travellers to the US to present a negative COVID-19 test within one day of boarding their flight. However, the CDC still recommends COVID-19 testing prior to air travel of any kind as a safety precaution.
Previously, travellers to LAX from eligible countries had to present proof of COVID-19 vaccination and a negative COVID-19 test (PCR or viral antigen) taken no later than three days before departure. Those who were unvaccinated had to present a test taken within one day of travel.
Currently, all non-US citizens and non-US immigrants travelling to LAX must provide proof of full vaccination against COVID-19. The CDC advises that you delay travel until you are up to date with your COVID-19 vaccines, including any booster doses. Before flying to LAX, check with your airline to see if they require any specific testing, vaccination, or other documents. You will need to comply with their requirements.
If you are travelling to or via LAX, you must wear a high-quality mask (a surgical mask or a KN95) while at the airport and on airport shuttles. It is recommended that you carry hand sanitiser/wipes and maintain social distancing at the airport.
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Testing requirements for travellers to the US from other countries
As of March 2023, the US Centers for Disease Control and Prevention (CDC) has ended mandatory COVID-19 tests for travellers from China, joining other countries in dropping the requirement. However, the CDC's Traveller-based Genomic Surveillance Program (TGS) will continue to monitor flights from China and regional transportation hubs, as well as flights from more than 30 other countries.
Previously, travellers to the US, regardless of vaccination or antibody status, needed to present a negative COVID-19 viral test result. The test must not be taken more than one day before travelling to the US by air. Children under two years of age were exempt from this requirement. Alternatively, travellers could provide documentation of recovery from COVID-19. This included proof of a positive test result from no more than 90 days before departure and a signed letter from a licensed healthcare provider clearing the individual for travel.
In addition to the above testing requirements, non-US citizens and non-US immigrants travelling to Los Angeles (LAX) must provide proof of full vaccination against COVID-19. They must also present a negative COVID-19 test taken no later than three days before departure. Masks are mandatory inside terminals at LAX, and travellers are encouraged to carry hand sanitiser and maintain social distancing at the airport and on airport shuttles.
It is important to note that testing requirements may change, and travellers are advised to check the latest guidelines before their trip. The test results must be verified before travelling, and it is recommended to use a test approved by US travel authorities.
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Types of COVID-19 tests
For travel to the USA, all travellers aged two and above need to provide a negative COVID-19 test result, regardless of vaccination or antibody status. The test must be taken no more than one day before travelling. Travellers can also submit documentation of recovery.
There are various types of COVID-19 tests that can be used to find out if someone is infected with the virus. Here are some of the most common types:
Molecular Tests
Molecular tests, also known as nucleic acid, RNA, or PCR tests, are considered the "gold standard" for COVID-19 testing. They are highly sensitive and specific, making them more accurate than antigen tests. Molecular tests look for the virus' RNA in a patient's sample, which is collected by inserting a nasopharyngeal swab into the nostril and taking cells from the back of the nose. Some lab tests also allow patients to spit into a tube to provide a saliva sample. Results from molecular tests typically take around 24 hours but may take longer if sent to an outside laboratory.
Antigen Tests
Antigen tests are rapid tests that usually produce results within 15-30 minutes. They are less sensitive than molecular tests and may give false-negative results, especially if the test is taken a week or longer after symptoms start. Antigen tests are considered less accurate for those without symptoms, and the FDA recommends two or three negative antigen tests, performed 48 hours apart, to confirm a negative result.
Antibody Tests
Antibody tests look for antibodies created by the body to combat the virus. While they can confirm if someone had the virus in the past, they cannot detect current infections. Antibody tests also face issues related to accuracy, varying antibody levels, and the usefulness of results for general patients.
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Frequently asked questions
No, as of June 10, 2022, the CDC has lifted the requirement for air travellers arriving in the US to present a negative COVID-19 test.
Yes, the CDC introduced a requirement for proof of a negative COVID-19 test for all passengers arriving in the US from international locations on January 26, 2021.
Yes, the CDC required proof of vaccination from all non-citizen non-immigrant passengers before they could travel to the US.
No, US citizens and permanent residents were not required to provide proof of vaccination before arrival in the US, although the CDC strongly recommended all travellers be fully vaccinated.
Testing is a critical layer to slow the introduction and spread of COVID-19, and when combined with other precautions like wearing masks and social distancing, it can make travel safer.

































