In November, the National Football League moved the Chiefs' game against the Rams from Mexico City to the Los Angeles Memorial Coliseum because of poor field conditions at Estadio Azteca.
The NFL has played annually in London since 2007 - 21 games at Wembley, three at Twickenham.
The dates, kickoff times and venues for each of the four scheduled games in the United Kingdom will be announced in the spring with the full National Football League schedule.
Last week, several reports circulated connecting the Steelers to a 2019 matchup vs. the Chargers in Mexico City.
According to the Texans public relations department, the team will visit the United Kingdom for the first time in franchise history to play in London, England.