Most people spend hours comparing flight prices. Very few spend more than a minute booking the car that takes them to the terminal. On some journeys, that car costs more than the seat on the plane.
Part of the reason is that airport transfer prices are hard to see. Fares are quoted one journey at a time. There is no published table to check them against, in the way there is for rail fares. So travellers fall back on assumptions: Heathrow is expensive, smaller airports are cheap, and the nearest airport must be the cheapest one.
New analysis of published airport taxi fares suggests all three assumptions are wrong.
The research looked at 2,160 published fares covering 360 pickup areas across London and the South East, priced to all six London airports. It found that Heathrow is one of the cheapest airports to reach, that Southend is by far the most expensive, and that the single biggest factor in what you pay is not distance at all.
The study analysed the published fare table of a single national airport transfer operator, Britannia Airport Cars. Every fare in the table is publicly listed on the company's website.
The analysis was published by Gatwick Taxi Transfer, which tracks fares across all six London airports. The two companies are related businesses under common ownership. This is a single-operator study rather than a survey of the whole market, and the findings should be read that way.
The scope was as follows:
All averages are straightforward means of the published prices. One figure that many readers might expect is missing. The operator lists fares by area name, not by distance, so there is no mileage data. Cost per mile could not be calculated and was left out rather than estimated.
The sample also leans heavily towards London and the Home Counties, because that is where the operator's coverage sits. There is no data for the Midlands, the North or the West Country.
Across all 2,160 fares, the average was £107 and the median £106. The cheapest fare in the study was £60. The most expensive was £214. Around 44% of fares came in under £100, and only 6% went above £150.
Three findings stand out.
Heathrow is the second cheapest London airport to reach, at £89 on average. Southend is the most expensive, at £150. And Southend was not the cheapest option from a single one of the 360 areas studied.
Airport
Average fare
Cheapest fare
Most expensive fare
London City
£88.56
£64
£137
Heathrow
£89.03
£60
£141
Gatwick
£100.21
£69
£144
Stansted
£107.62
£81
£152
Luton
£107.88
£61
£160
Southend
£149.93
£116
£214
Heathrow's position is the surprise. Its reputation for high prices comes largely from metered black cab journeys and long-distance trips. It does not hold up against fixed-fare pricing for the area the airport actually serves.
Heathrow sits on the western edge of London, close to the M4 and the M25. From Slough, Windsor, Iver, Maidenhead and Ascot the published fare is £60. From Southall, Hayes, Uxbridge and Greenford it is £61. From Acton, Ealing, Chiswick and Hammersmith it is £64. Roughly a quarter of all areas in the table can reach Heathrow for under £70.
Southend sits at the other end. Its cheapest published fare, £116, is higher than the typical fare to four of the other five airports. It is a long way east of the M25, so most journeys involve either the Dartford Crossing or a slow run through east London. It is also a small airport with limited transfer demand, which gives drivers fewer opportunities to pick up a return fare.
The answer depends entirely on where you start.
Heathrow is the cheapest option from Berkshire and Buckinghamshire, at £60 on average, and from west London at £67. Luton takes Hertfordshire at £72. Gatwick is cheapest from Surrey at £79 and Sussex at £94. London City wins almost everywhere else: east London at £74, central London at £82, north and south London at £83, Kent at £84 and Essex at £91.
London City is the cheapest airport from 183 areas, or roughly half the total. That figure comes with an obvious caveat. London City is a small airport with a limited route network. Being cheap to reach counts for nothing if it does not fly where you are going.
Gatwick's strength is narrower but clearer. As well as leading in Surrey and Sussex, it is the second cheapest option across south London at £86. Its lowest published fares, £69, cover Redhill, Reigate, Dorking, Betchworth, Capel, Godstone, Lingfield, Oxted and the area around the airport itself. Travellers in those areas can check the full Gatwick airport taxi prices for their own postcode.
There are some awkward results too. The most expensive airport to reach from Kent is not Southend but Luton, at £141 on average. Anyone in Kent booking a cheap Luton flight should check the transfer cost first.
Distance matters less than most travellers assume. Road type matters more. A mile of motorway costs a driver far less in time and fuel than a mile of congested urban road. That is why Berkshire reaches Heathrow for £60 while central London pays £88 for a much shorter journey.
Several other costs sit behind the fares.
Drop-off charges rose sharply in 2026. Gatwick raised its fee from £7 to £10 in January. Stansted also moved to £10 in March. Heathrow went from £6 to £7 and introduced a 10-minute limit. London City brought in its first ever charge, at £8.
Central London journeys can also attract the Congestion Charge, which rose from £15 to £18 in January 2026. ULEZ remains at £12.50 a day and is charged separately.
The empty return leg matters as well. Every fare has to cover the driver getting back. Routes into areas with little return demand carry a hidden premium, which helps explain why Southend fares start so high.
The clearest practical finding is the gap between the dearest and cheapest airport from the same address.
Take the Thames Valley. From Slough, Windsor, Maidenhead and the surrounding areas, Heathrow costs £60. Luton is £102, Gatwick £109, London City £117 and Stansted £123. Southend is £214. The same group of postcodes produces both the cheapest fare in the entire study and the most expensive, a gap of £154.
Across all 360 areas, the average gap between the most and least expensive airport was £75. The typical gap was £58 each way, or £116 on a return trip. A traveller who saves £40 on a Southend flight and then pays £154 more for the taxi has lost money.
At the other extreme, areas near the eastern side of the M25, such as Grays, Tilbury and Purfleet, showed a gap of only £22. Location determines how much the choice matters.
Airport transfer costs follow road geography rather than distance. Which motorway you live near, whether your journey crosses the Thames, and whether a driver can find work on the way back all matter more than how many miles you travel.
This was one operator's price list, not the whole market, and other firms may price differently. But the pattern it reveals is worth knowing. The airport with the worst reputation for cost turned out to be among the cheapest, and the small regional airport that sounds like a bargain was the most expensive by a wide margin.
The advice that follows is simple. Check the transfer cost before booking the flight, and check it for more than one airport. On this evidence, that comparison is worth around £116 on a return trip, and sometimes a good deal more.
