London to New York: Flight Safety, FIRs Crossed and Airline Routing
LHR · EGLL → JFK · KJFK / EWR · KEWR · ~3,450 mi · ~7h–8h · Last updated: May 2026
LHR–JFK and LHR–EWR together form the most-flown international long-haul corridor on the planet. Routing departs London ACC (EGTT), crosses Shannon (EISN), enters Shanwick Oceanic (EGGX), exits the ocean through Gander (CZQX) and arrives via Boston ACC (KZBW) and New York ACC (KZNY). The North Atlantic Track system organises daily flows, and CPDLC plus space-based ADS-B surveillance have progressively reduced procedural-separation minima since 2020. ETOPS certification is mandatory; standard alternates include Keflavik, Shannon and Gander.
FIRs crossed
Typical eastern-half NAT track sequence. Daily track allocation determines the precise oceanic segment.
| Segment | FIR | Type | Notes |
|---|---|---|---|
| Departure | EGTT | Continental | London ACC, full radar |
| Transit | EISN | Continental | Shannon ACC handoff |
| Oceanic | EGGX | Oceanic | Shanwick Oceanic, NAT tracks |
| Oceanic | CZQX | Oceanic | Gander Oceanic, NAT tracks |
| Continental | CZUL | Continental | Montreal ACC sector |
| Arrival | KZBW / KZNY | Continental | Boston / New York ACC |
Source: NAV CANADA, NATS and FAA published NAT documentation.
Pre-2022 vs current routing
NAT track system with twice-daily westbound and eastbound flow. Shanwick and Gander oceanic control. ETOPS-180/240 standard for widebody twins.
Same NAT-based corridor. Since 2020, space-based ADS-B surveillance has progressively enabled reduced lateral separation, increasing capacity without adding new tracks.
Operating carriers
| Carrier | JFK / EWR | Typical aircraft |
|---|---|---|
| British Airways (BA) | JFK · EWR | A380 / 777 / 787-9 |
| American Airlines (AA) | JFK | 777-300ER / 777-200 |
| Delta Air Lines (DL) | JFK | A330 / A350-900 |
| United Airlines (UA) | EWR | 767-300ER / 777-200 |
| Virgin Atlantic (VS) | JFK | A330-300 / A350-1000 |
Multiple daily departures by each operator under standard schedule conditions.
Current airspace conditions
- ›No EASA CZIB coverage. Atlantic transit between Shanwick and Gander is not subject to any active EASA Conflict Zone Information Bulletin.
- ›North Atlantic Track system. Westbound tracks are published for daytime crossings, eastbound tracks for the overnight wave. Operators file preferred tracks; Shanwick and Gander allocate based on traffic demand.
- ›Space-based ADS-B. Operational since 2020, this has enabled reduced lateral separation on NAT tracks and supports better deviation handling during weather avoidance.
- ›ETOPS requirements. Widebody twins on the NAT operate under ETOPS-180 or ETOPS-240 with diversion airports including Keflavik (BIKF), Shannon (EINN) and various Canadian fields.
- ›Volcanic ash watch (Iceland). Active Icelandic seismic and eruption activity is continuously monitored by the London VAAC. Historical reference: the 2010 Eyjafjallajokull event closed European airspace for six days.
- ›Space weather context. 2026 remains near the Solar Cycle 25 peak. Northern NAT tracks can be sensitive to HF degradation and high-altitude radiation events; operators carry contingency plans.
Block time and fuel impact
Westbound LHR→JFK/EWR typically blocks 7h 30m–8h 15m against headwinds. Eastbound JFK/EWR→LHR averages 6h 15m–7h with the prevailing tailwind. Block-time variability is driven primarily by jet-stream position and selected track.
No structural detour applies. The corridor is among the most fuel-optimised long-hauls in the world thanks to NAT track flexibility.
Diversion options
Operator dispatch determines final ETOPS alternate set per crossing.
Sources
- NAV CANADA / NATS NAT track publications
- FAA NAT documentation and Oceanic Information Manual
- OPSGROUP Atlantic briefings
- Cirium schedule database
- British Airways, American, Delta, United and Virgin Atlantic timetables
- Flightradar24 historic NAT track data
- ICAO Space Weather Advisory framework
Related
FlySafe publishes numerical airspace indices computed from public data — usable in travel-aggregator UI, insurance underwriting context, charter operator dashboards and airline OCC briefings.
Explore the API →FlySafe provides automated computation of numerical indices from publicly available data. Routing information on this page is reference context; it does not constitute flight-planning advice. Operational routing is determined by the operator and ATC. See Terms of Service.