British Airways is adding an extra flight on its Heathrow-Mexico City route from October.
The service will operate four times weekly during the upcoming winter season, starting on October 27.
Flight BA243 will continue to depart Heathrow on Mondays, Wednesdays and Fridays at 12.40, arriving in Mexico City at 18.20. The additional fourth service will depart Heathrow on Sundays at the same time, but will arrive five minutes later at 18.25.
The return BA242 service will leave Mexico City on Mondays, Wednesdays, Fridays and Sundays at 21.00 and arrive in London the following day at 13.00.
Aeromexico is also changing its Heathrow to Mexico City flight schedule from October 27.
That new itinerary will see flight AM 008 depart Heathrow at 22.30 on Mondays, Thursdays and Sundays and arrive in Mexico City at 05.20 the next day, arriving in time for onward connections.
This service currently departs LHR at 17.25 and lands in Mexico City at 00.35.
The outward leg, flight AM 007, departs Mexico City at 22.35 on Wednesdays and Sundays and arrives in London at 15.15 the following day. On Saturdays, AM 007 departs at 23.15 and lands at Heathrow at 15.55.
Aeromexico launched its thrice-weekly service from London last December.