Prince Harry travelled to Heathrow Airport immediately after King Charles’ coronation.
The 38-year-old Duke of Sussex was picked up by a car from Westminster Abbey after the service on Saturday and went straight to Heathrow to return to California.
According to U.K.’s The Sun, Harry’s car was seen being escorted by a police motorcade in the direction of the airport.
He was then taken into the VIP Windsor Suite at Terminal 5.
Earlier, Harry had arrived at the church along with Princess Beatrice’s husband Edo Mapelli Mozzi.
He then took a seat next to Princess Eugenie’s husband Jack Brooksbank, a few rows behind his brother Prince William.
A source said: “There were discussions that the seating could be arranged on line of succession.
“But that would have put fifth-in-line Harry front and centre, and with William and Kate.
“Instead the decision was working royals only at the front and work back from there.”
The royal was widely expected to leave London as soon as possible after the ceremony, in order to celebrate his son Archie’s fourth birthday with his wife Duchess Meghan and their daughter Lillibet in California.
According to a lipreader consulted by HELLO! magazine, Harry told Brooksbank: “I will be straight to the airport.”
Following the service, Harry did not travel to Buckingham Palace with other members of the Royal Family, and he missed out on standing on the balcony for the flypast, as the coronation procession drew to a close.
Meanwhile, his wife Meghan has reportedly planned a “low-key party at home” for Archie at their Montecito home in California.
A source told PEOPLE: “They’ll have friends around them and Meghan’s mom, Doria (Ragland). Meghan will definitely have support that weekend.”
Archie is big brother to sister Princess Lilibet, 23, months, and the insider said: “They are so sweet together. Archie loves Lili. He’s such a sweet boy. When she’s not around, he asks, ‘Where’s Lili?’”
Meghan, 41, decided not to travel to the U.K. with Harry for his father’s big day and insiders have explained that their relationship with the royals is still complicated.
The source said: “Things are strained.
“Meghan wants to be there to support her father-in-law, but at the same time, the scrutiny she receives outweighs the support. There’s always going to be that other side challenging their reasoning, and who wants to put themselves in that position?”
Following Queen Elizabeth’s death last year and Charles becoming King, Archie and Lili were afforded the titles of prince and princess.
A spokesperson for the Duke and Duchess of Sussex said: “The children’s titles have been a birthright since their grandfather became monarch. This matter has been settled for some time in alignment with Buckingham Palace.”