American Airlines is partnering with the U.S. Transportation Security Administration (TSA) and the UK Department for Transport (DfT) to streamline travel experiences through the new ‘One Stop Security’ (OSS) programme.

Initially, the OSS initiative will be available only to passengers travelling from Dallas-Fort Worth International Airport (DFW) who connect through London Heathrow Airport (LHR) to international destinations beyond the UK. It remains unclear how long this pilot programme will run or if it will be extended permanently upon successful evaluation.

“American Airlines is thrilled to be working with the U.S. and U.K. governments to roll out a first-of-its-kind security agreement that will provide our customers a more seamless and secure flying experience,” said Nate Gatten, Chief Government Affairs Officer for American Airlines. “This partnership simplifies international air travel for our customers, and we look forward to opportunities to expand it to more airports, including from LHR to DFW, in the future.”

Under this new scheme, travellers connecting through Heathrow’s Terminals 3 or 5 will no longer have to go through a second security screening before proceeding to their departure gates. Given that London Heathrow is one of the world’s busiest airports, where repeated security screenings and luggage checks often result in significant delays, the programme will greatly improve convenience for American Airlines passengers.

Wonderful @britishairways flight from #NYC to #London but while @HeathrowAirport #T5 might look beautiful we are now an hour after landing and still waiting on our bags? Why can @JFKairport which is a building site have our bags on the carousel waiting for us after immigration? pic.twitter.com/aq2TxNaJkx

— Gareth Wallace (@garethrwallace) February 25, 2025

“What this means for our customers — and our team’s ability to care for our customers — cannot be overstated,” said David Seymour, American’s Chief Operating Officer. “We’re creating a more convenient and significantly less rushed connection experience — one that our customers won’t just see, they’ll feel.”

However, as the measure currently applies to only selected flights and routes, American Airlines advises passengers to verify their eligibility for the OSS programme before travelling. As a member of the Oneworld Alliance, which includes British Airways, Cathay Pacific, Japan Airlines, Iberia, and Qantas, the airline has confirmed that passengers connecting from Dallas to London would not be required to clear security again if their onward flight is operated by a Oneworld airline departing from Terminal 3 or 5.

This OSS initiative follows another recent innovation introduced by American Airlines at the end of last year: a new boarding technology designed to automatically detect and prevent queue jumping. Initially tested at selected airports, the airline is assessing whether to expand its implementation across its global network.