Why are Heathrow queues worse with EES?

EU entry-exit system (EES) and summer delays

A new EU entry-exit system, known as EES, is increasingly being linked to longer wait times at airports this summer. A UK poll cited in recent travel coverage suggests delays can reach around three hours in some locations, as airlines, border processing and traveller documentation workflows adjust to the new rules.

EES matters for travellers because it changes how border authorities record and process entries for non-EU visitors. In practical terms, that means travellers can’t simply assume “normal” processing times during peak periods. If you’re flying close to checkpoints with tight schedules—especially on long-haul itineraries where you’re transferring or connecting—processing slowdowns can cascade into missed connections.

What to do before you fly

• Build buffer time around border arrival, immigration and document checks.
• Have documents ready before you reach the front of the line.
• Plan connections conservatively if your itinerary includes a same-day transfer.

With summer demand typically peaking, the timing of EES rollout is particularly sensitive: any processing friction can compound at busy airports. Travellers affected by the system are likely to feel it most during high season—when many people are arriving from the same time windows.

Overall, the key travel-planning takeaway is simple: treat border processing as a variable, not a constant, and plan your schedule with additional slack so you can absorb potential delays without derailing the rest of your trip.