RouteRankingCompare every flight from Shannon (SNN) to London Heathrow (LHR) ranked by on-time arrival performance. We track real historical data across all flights on this route so you can pick the most reliable option — not just the cheapest. Updated daily.
💡 Tip: Use the departure time as your guide — flight numbers can change day to day, the time slot is the biggest determining factor of punctuality. Check your airline's website to confirm your flight before booking.
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