Heathrow vs Gatwick vs Stansted: London's Airport Math Actually Matters

The £70 fare that isn't really £70

You are flying from London to Barcelona in June. Ryanair shows £42 one way out of Stansted. British Airways from Heathrow is £128. easyJet from Gatwick is £86.

Stansted looks like the obvious answer until you remember that Stansted is roughly 40 miles from central London, you are staying in Bloomsbury, and the only sane way to get there is the Stansted Express at around £20-25 each way depending on booking window, plus a 48-minute train ride on top of the walk to the platform.

Run the real math and that £42 Ryanair fare is not actually the cheapest flight. It might still be the right flight for your trip. But not for the reason you think.

London's airport geography is unique among major world cities: five airports arranged in a rough ring around the M25, with wildly different transport costs and travel times into the centre. If you pick wrong you lose 90 minutes and £60 on a single trip. Get it right and you capture genuine savings that a US-style "just pick the cheapest fare" approach will miss entirely.

The three airports, briefly

Heathrow (LHR)

The default international hub, 15 miles west of central London in Hounslow. Heathrow Express runs to Paddington in 15 minutes for £26 one way as a walk-up (cheaper if booked in advance — Advance singles start from around £10 when booked 30+ days out). The Elizabeth line takes 30 to 40 minutes from around £13.90 and drops you at Tottenham Court Road or Liverpool Street. The Piccadilly line is the budget option at £5.90 with a contactless tap, but it takes 50 to 60 minutes and stops at every station through West London.

Gatwick (LGW)

Twenty-eight miles south of London in West Sussex. Gatwick Express to Victoria runs every 15 minutes and takes around 30 minutes for roughly £21-24 one way (varies by booking method — contactless walk-up tends to be at the higher end). Thameslink is cheaper at around £14 to £15 standard single depending on destination, runs to St Pancras and Blackfriars in roughly 45 minutes, and works better if you are staying in North or East London. Rideshare to central London is typically £70 to £110 depending on traffic.

Stansted (STN)

Thirty-eight miles northeast of London in Essex. This is the long one. Stansted Express to Liverpool Street takes around 48 minutes; standard walk-up singles run around £25, while Advance fares can drop to roughly £10 when booked ahead. The Airport Bus A9 is much cheaper (typically £10 to £20) but takes 75 to 90 minutes. A pre-booked minicab is typically £75-100 fixed to central London; metered black cabs and late-night surge fares can push that significantly higher in evening traffic.

Hidden costs that do not appear on Skyscanner

• Booking in advance matters for airport trains. Walk-up fares on Heathrow Express and Gatwick Express are painful. Booked 7 days ahead they often drop 30 to 50 percent.
• Ryanair and Wizz charges stack. Stansted is dominated by carriers that charge separately for bags, seat selection, priority boarding, and printed boarding passes. That headline £42 can become £78 before you reach the gate.
• Airport arrival time. Stansted requires you to arrive roughly 2 hours before a short-haul flight, same as Heathrow, but the transit time to get there is longer. You need to leave central London 3.5 hours before departure to be safe.
• Return trip surcharges. If you are landing at Stansted at 11:30 PM on a Ryanair flight from somewhere in Eastern Europe, the Stansted Express runs less frequently and the taxi fare doubles.
• Ticket flexibility. BA and Virgin from Heathrow are vastly more forgiving on changes than Ryanair from Stansted. If your trip has any risk of shifting, the "cheap" fare locks you in.

The real math: Bloomsbury to Barcelona, one week in June

One traveler, one 10kg cabin bag (checked bag not required), valuing time at £30 per hour.

Stansted still wins this one, but the margin over Gatwick is around £30, not £88. If you value your time higher than £30 an hour, or if you add a checked bag (Ryanair typically charges £35-60 depending on route and weight), Gatwick overtakes Stansted. If anything goes wrong and you need to change the flight, Ryanair's change fee alone will wipe out the entire savings.

Now run it: Canary Wharf to Amsterdam, Tuesday morning business trip

Same format, but this time the traveler values time at £60 per hour and needs to be at a meeting by 11 AM local time.

Heathrow wins cleanly. The Elizabeth line runs direct from Canary Wharf, the BA fare includes the basics, and the shorter transit home is worth real money when your time is valuable. This is exactly the business-traveler scenario where Stansted's headline fare is misleading.

When each airport actually wins

When Heathrow wins

• You are on a business trip where time is expensive and the boarding pass needs to be predictable.
• You are flying long-haul (transatlantic, Asia, Middle East). Stansted and Gatwick simply do not compete on those routes.
• You live near the Elizabeth line corridor (Canary Wharf, Liverpool Street, Tottenham Court Road, Paddington, Ealing) where access is trivial.
• You have status on a Oneworld or Star Alliance carrier and the upgrades actually matter.

When Gatwick wins

• You are going somewhere in Southern Europe (Spain, Portugal, Italy, Greece) on easyJet, where Gatwick has the most competitive short-haul network.
• You are staying or living in South London (Clapham, Brixton, Croydon, Wimbledon). Gatwick is a 20 to 30 minute direct train away.
• You want the short-haul fare savings without the Stansted time penalty.
• You need Thameslink access to St Pancras, Blackfriars, or Farringdon.

When Stansted wins

• The fare difference after ancillaries is at least £60 per person and you are a group or family (shared train costs, multiplied savings).
• You are going to Dublin, Eastern Europe, or a small European city where Ryanair or Wizz genuinely owns the route.
• You are travelling with hand luggage only and you are confident about the flight not changing.
• You do not mind the arrival time and you are staying in East London (Stratford, Shoreditch, Liverpool Street, Dalston). The Express drops you at Liverpool Street, which is perfect for that half of the city.

The Heathrow Express vs Elizabeth line question

If you are going to Heathrow, the rail decision alone can swing the real cost of your trip by £20.

Heathrow Express is the premium option at £26 on the day, 15 minutes to Paddington, runs every 15 minutes. It is fast and comfortable and worth it if you are on a tight schedule or carrying a lot. Advance singles can drop to roughly £10 when booked 30+ days out.

The Elizabeth line opened up a third option between Heathrow Express (fast and expensive) and the Piccadilly line (slow and cheap). It runs to central London in 30 to 40 minutes from around £13.90 with contactless tapping, direct to Tottenham Court Road, Farringdon, Liverpool Street, and Canary Wharf. For most leisure travelers the Elizabeth line is the correct answer, no question.

The Piccadilly line is £5.90 and still the cheapest option but it takes nearly an hour and you are often standing with luggage.

Stansted's arrival problem

One more thing specifically about Stansted. If your flight lands at 11 PM or later (common on budget carriers coming back from the continent), Stansted Express frequencies thin out late at night, and the last train leaves around 00:30. Miss it and your options collapse to a late-night taxi (typically £100+ once surge or metered fares kick in) or the overnight bus. Inbound Ryanair delays of even 45 minutes can be enough to turn a planned £20 train ride into a three-figure cab home.

If your booked itinerary has any late-night arrivals, Gatwick and Heathrow both have better off-hours transit coverage (Heathrow especially, thanks to the Piccadilly line running until 1 AM and the N9 night bus).

Run it for your specific trip

We built the True Cost Airport Calculator for exactly this kind of three-way comparison. Drop in the fare you found on each, your neighborhood, and how much your time is worth, and it produces a verdict specific to your trip.

If you want the framework, When Cheaper Flights Aren't Actually Cheaper is the original piece. For the New York equivalent of this decision, see JFK vs Newark vs LaGuardia. For travelers going the opposite direction from London to Asia, Narita vs Haneda handles the same question on the Tokyo side.

The bottom line

Stansted is cheaper. Heathrow is faster. Gatwick is usually the best compromise. Which of those three actually saves you money depends on your neighborhood, your bags, your schedule, and how much your time is worth. Run the numbers before you book, because a £40 headline fare difference can completely flip once you add train tickets, ancillary fees, and the 90 extra minutes you are giving up.

Once you know which airport is right, make sure you are taking the right days off to fly on. Leavewise builds a plan that turns your UK bank holidays into long weekends aligned with the cheapest fares in the calendar, so the whole trip (not just the airport) is optimized.

A Note on Prices

Prices and transit times in this article reflect typical 2026 ranges based on official carrier and airport sources at time of writing. Train fares, taxi quotes, and parking rates change — Heathrow Express in particular adjusts pricing seasonally and by booking window. Verify with the carrier directly before booking. Use the figures as directional, not exact.