Cambridge to London trains: 55 minutes, £5,952 a year

Most commuter towns have one line to London. Cambridge has two, running to three different terminals, and which one you use decides both how long you sit on the train and how much your season ticket costs. The fastest service reaches King’s Cross in 55 minutes. The cheapest annual season is £5,952, and it will not let you on that train.

This page sets out the actual times from the timetable, the fares as they stand in August 2026, and what the new Cambridge South station changed when it opened in June.

The fast train, and the ones that are not

Four London trains an hour leave Cambridge in the morning peak. They are not interchangeable. These are real departures from a weekday timetable:

The pattern repeats every hour. The fast King’s Cross service leaves at roughly twelve and forty-two minutes past and takes 55 to 57 minutes. The stopping King’s Cross train, at about twenty-five and fifty-five past, takes 1h 8m to 1h 10m for the same journey. The St Pancras trains are Thameslink services running through central London, useful if you work near Farringdon or Blackfriars and want to avoid a change. The Liverpool Street trains run down the other line through Bishop’s Stortford and take 1h 15m at best.

If you turn up on the wrong side of a fifteen-minute window in the morning, you can add half an hour to your day without noticing.

What a season ticket costs, and the £544 trap

Cambridge season tickets are sold with route restrictions, and this is where people lose money. The cheapest annual ticket on the list is £5,952, but it is marked valid only on Greater Anglia services, which means the Liverpool Street line and the 1h 15m journey. It will not get you on the 55-minute King’s Cross train.

The practical decision is the first two rows. £544 a year, about £10.50 a week, is what the fast line costs. Over 220 working days it buys back roughly 20 minutes a day, or something like 70 hours a year. Whether that is worth it depends entirely on whether you would rather have the money or the time, but it should be a decision rather than an accident at the ticket machine.

If you commute to the City rather than the West End, look hard at the Greater Anglia ticket before dismissing it. Liverpool Street is on the doorstep of the Square Mile, and the extra 20 minutes on the train may be less than the tube leg you avoid.

Buying a single ticket

For occasional trips the walk-up fares are the same in both directions and vary a lot by time of day.

The line worth remembering is the third one. A Super Off-Peak Day Return restricted to Greater Anglia is £18.90, against £25.30 for the equivalent any-route ticket. For a day out with no fixed timings, going via Liverpool Street saves £6.40 a head and costs 20 minutes.

The Travelcard rows also matter. If your day involves more than two tube journeys, the £35.70 Super Off-Peak Day Travelcard usually beats a £25.30 return plus pay-as-you-go.

Cambridge South changed the map in June

The city’s third station, Cambridge South, opened on Sunday 28 June 2026 after a £250 million government investment. It sits on the Cambridge Biomedical Campus, which means Addenbrooke’s, Royal Papworth and the research institutes now have their own station rather than a bus ride from the city centre.

What it actually offers:

• Four platforms and up to 20 services in the peak hours, run by Greater Anglia, Great Northern, Thameslink and CrossCountry.
• Direct trains to London, Birmingham, Stansted Airport, Gatwick Airport and St Pancras, with a London journey time Network Rail puts at 45 minutes.
• Six lifts, step-free access to every platform, accessible toilets, baby change and a Changing Places facility.
• 1,000 cycle parking spaces.
• No general car park. There are blue badge bays, and that is it. If you were planning to drive and park, this is not the station for it.

Getting to and from the station

Cambridge station has the largest cycle park in the country. The CyclePoint holds over 2,850 bikes across three floors, is covered by CCTV, open 24 hours and free to use. In a city where a third of people cycle to work, that is the default answer to how you reach the train.

If you are driving in from outside, the sensible move is usually not to drive to the station at all but to use a park and ride site, where parking is free for up to 18 hours and the bus into town is £4.50 return.

For live departures, National Rail Enquiries is the authority. Times on this page were read from the published timetable in August 2026 and will change at each timetable revision.

Frequently asked questions

How long does the train take from Cambridge to London?

The fastest service reaches London King’s Cross in 55 minutes, running at around twelve and forty-two minutes past each hour in the morning peak. Stopping King’s Cross services take 1h 8m to 1h 10m, Thameslink to St Pancras takes 1h 8m, and Greater Anglia to Liverpool Street takes 1h 15m.

How much is an annual season ticket from Cambridge to London?

£5,952 for the cheapest, which is valid only on Greater Anglia services to Liverpool Street. An any-permitted-route London Terminals season, which covers the fast King’s Cross trains, is £6,496. Adding a zones 1 to 6 Travelcard takes the cheapest option to £7,108.

Which London stations do Cambridge trains go to?

Three: King’s Cross and St Pancras International on the line south west through Royston, and Liverpool Street on the line south east through Bishop’s Stortford.

Is there parking at Cambridge South station?

No general car park. Cambridge South has blue badge bays and 1,000 cycle spaces, but it was built for the Biomedical Campus rather than for park-and-ride commuting.

What is the cheapest day return from Cambridge to London?

The Super Off-Peak Day Return restricted to Greater Anglia services is £18.90, against £25.30 for the any-route equivalent. It commits you to the Liverpool Street line and the slower journey.

Sources

• traintimes.org.uk, Cambridge to London for the weekday timetable examples and the walk-up fares, drawn from National Rail Enquiries.
• Trainline season tickets, Cambridge to London for the weekly, monthly and annual season prices and their route restrictions.
• Network Rail, Cambridge South station for the 28 June 2026 opening, the £250 million cost, the four platforms, six lifts, 1,000 cycle spaces, operators and peak service count.
• Greater Anglia, Cambridge CyclePoint for the 2,850-space cycle park.
• National Rail Enquiries for live departures and current fares.

Checked 9 August 2026. Fares and timetables change, and season ticket route restrictions are set by the ticket rather than the operator, so confirm the restriction on any season before you buy. What the roads look like instead is on Cambridge roadworks and travel; what living here costs is on Cambridge house prices.