London King's Cross → Letchworth
Live train times from London King's Cross to Letchworth, with around 54 direct services per day and a fastest typical journey of 27m. Operated by Great Northern and Thameslink. Currently 72.7% of services are running on time today.
Based on the last 32 days of timetable data
Today's performance
30-day performance
Typical calling pattern
Trains from London King's Cross to Letchworth are non-stop on the fastest services, taking 00:27. Most services call at one or two of Doncaster, Peterborough, Stevenage. Slow services (00:57 typical) stop at up to 20 intermediate stations.
Which operator is most reliable on this route?
Great Northern runs the majority of direct services from London King's Cross to Letchworth. Over the last 30 days, 44.5% of Great Northern's services on this route ran on time, with an average delay of 3.8 minutes and a cancellation rate of 5.8%. Thameslink sees lower on-time performance (44.5%) but runs fewer services.
Why take the train?
The straight-line distance from London King's Cross to Letchworth is around 31 miles. By train the journey takes 00:27; the equivalent drive is typically 1h 33m to 1h 58m depending on traffic, plus 30 minutes of city-centre parking. National Rail publishes average CO₂ emissions of ~35g per passenger-km for electric intercity trains — for this route that's roughly 1.8 kg CO₂ per passenger. The same trip in a petrol car with one occupant emits around 8.6 kg. Two passengers by train equals the per-person footprint of one passenger by car.
Delay Repay
Delay Repay for this route
All operators on this route participate in the National Rail Delay Repay scheme. Great Northern (GTR) operates the DR15 scheme (15–29 min: 25%, 30–59 min: 50%, 60+ min: 100%). Claims can be made within 28 days of travel. Use Railly's Delay Repay calculator to check eligibility and pre-fill the operator's claim form.
Travel tips for this route
Great Northern and Thameslink services from London King's Cross to Letchworth can be busy around 00:00, 10:00–12:00, 22:00. Avoid the 00:00, 10:00–12:00, 22:00 peak if you can — the 01:00–05:00 services are typically 28% less crowded. Off-peak return tickets are valid on any train after 09:30 on weekdays, all day weekends. The first train is at 00:01 and the last at 23:54. If your train is delayed by 15 minutes or more, you can claim Delay Repay compensation directly from the operator.