Heathrow is shaking up its terminal line-up, and one of the biggest changes will affect transatlantic travellers. Five airlines — Delta, Finnair, Japan Airlines, LATAM and China Southern — are set to relocate to different terminals over the next two years, as the airport tries to squeeze more efficiency out of its constrained capacity.
The flashpoint is Delta's move from Terminal 3 to Terminal 4, currently pencilled in for 2028. That matters because Delta has operated side by side with Virgin Atlantic in Terminal 3 for over a decade. The two carriers run a deeply integrated joint venture, coordinating schedules, check-in and connections — Virgin Atlantic also owns 49% of Delta. Splitting them across buildings would end all that: connecting passengers between the two airlines would face a longer, more awkward trek, and the partnership's smooth operations would take a hit.
Virgin Atlantic chief executive Corneel Koster has come out swinging, saying the move would "create friction for customers, weaken competition and reduce choice". His argument is that keeping the partners together underpins fast connections and keeps real competitive pressure on the rival British Airways–American Airlines joint venture, which helps hold fares down. Virgin says it is weighing "all available options" to fight the decision — and legal action is understood to be on the table.
Heathrow sees it differently. A spokesperson said the reshuffle follows consultation with airlines and will unlock more capacity, cut congestion, improve passenger flow and help keep costs down. The airport also notes that carriers representing 81% of its passengers back the plan — so Virgin and Delta are outliers, albeit loud ones.
What does this mean if you're flying to the US via London? For now, nothing changes — Delta stays in Terminal 3 until at least 2028, and any move faces a fight. If it does go ahead, expect connections between Delta and Virgin flights to become slower, since Terminal 4 sits further from Terminal 3 on the airport's southern edge. Travellers with tight same-day connections or codeshare itineraries mixing the two airlines would feel it most.
There's also a broader point for anyone booking long-haul from Heathrow: terminal allocation can genuinely shape your experience, from lounge access to connection times. If Delta's relocation stands, some US-bound itineraries will simply be less convenient than they are today — which is precisely Virgin's complaint. Watch this space; with talk of legal challenges, the 2028 move is far from settled.
