What should I check before buying a BA itinerary that changes London airports?

Check the airport codes on both flights and plan the surface gap before buying. A connection through “London” may involve different airports rather than a transfer within one airport. Your purchase decision must account for the ground journey and the entry-document question, not just the time printed between flights.

What this answer depends on

  • Pre-purchase BA London cross-airport routing choice; no immigration determination, airport operation or live surface schedule.
  • BA identifies Heathrow, Gatwick and London City as separate London airports used by its services.
  • Its inter-airport connection guidance tells travelers to check the documents required to enter the UK.
  • For Heathrow–Gatwick travel, BA describes a separately ticketed National Express coach option rather than an airport-internal transfer.
  • A fare through London can look attractive until the traveler realizes that the next flight leaves from another airport. The relevant comparison is not merely two airline prices: it is two whole journeys, one of which requires additional ground travel. Someone unable to satisfy the entry requirements may need a different routing altogether.
  • Whether BA or an agency sells the flights, ask the seller to identify the airport change explicitly. Check what the quote includes rather than assuming a ground ticket accompanies the airline ticket. Do not infer connection protection from the airline names alone.

Important exceptions

  • No current coach frequency, ground fare, transfer-time guarantee, terminal assignment or boarding cutoff is given. This is a pre-purchase itinerary-choice guide, not an airport transfer procedure or immigration decision. Operational details require a fresh check before travel.

What to do next

  1. Compare the arrival airport of the first flight with the departure airport of the next. Treat different codes as a change in journey structure.

  2. Check applicable official UK entry requirements for your own documents before committing to a routing that requires entry. This guide does not determine your eligibility.

  3. Investigate a feasible ground connection for the actual dates and hours, including its booking conditions and full cost. Do not use this article as a current timetable.

  4. Compare the complete plan with an itinerary avoiding that airport change. Ask the ticket seller to explain any unclear connection conditions before payment.

  5. Have the arrival and departure airport codes, scheduled local dates and times, ticket seller, intended ground connection and the travel documents relevant to your separate eligibility check ready.

  6. Human assistance is useful when the booking display compresses the route into a single city label. Request the full journey and clear inclusion/exclusion terms before authorizing payment.

More booking questions

Is changing Heathrow to Gatwick just changing terminals?

No. BA treats them as separate airports with an inter-airport journey.

Checked againstFlight connections

Does this article confirm that I may enter the UK?

No. Entry eligibility must be checked using the applicable official requirements for your circumstances.

Checked againstFlight connections

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