The rail link to a London airport fails more often than people plan for. Strikes, weekend engineering works, signal failures and planned closures all produce the same situation: the train you were relying on is not running, and your flight has not moved.
This guide is airport by airport — what actually serves each one, what happens when the primary link goes down, and where the fallback quietly fails too.
All prices are estimates and may vary. We provide the journey directly with our own licensed drivers.
The thing that catches people out
Most airport journeys are two legs, not one: get to the terminus, then take the express. The express is usually the reliable half. The first leg — crossing London to reach Paddington, Liverpool Street, Victoria or St Pancras — is the half that breaks.
So "the Gatwick Express is running fine" can be true and useless at the same time, if the Tube journey to Victoria is not. When you assess disruption, assess the leg you were not worrying about.
A door-to-door car collapses two legs into one. That is the actual argument for it during disruption — not comfort, but removing a connection that can fail.
Heathrow
Three rail options, and they fail independently:
- Piccadilly line — the cheap one, and the first to go in a Tube strike.
- Elizabeth line — separately operated, and has historically kept running through Underground strikes, though shared stations and staff can still affect it.
- Heathrow Express — from Paddington, unaffected by Tube action, but you still have to reach Paddington.
During a Tube strike the Elizabeth line and Heathrow Express absorb everyone displaced from the Piccadilly, so "still running" means "running, and extremely full, with luggage". Our Heathrow taxi guide covers terminal-by-terminal pickup arrangements, and Heathrow to central London covers the road route.
The early-morning case is the one to watch: Tube strikes typically mean no service before 8am, which removes the entire pre-dawn airport run.
Gatwick
Served by National Rail — Gatwick Express, Southern and Thameslink — which is a different dispute and different staff from the Underground. A Tube strike does not stop Gatwick trains.
What it does stop is you getting to Victoria or London Bridge. Thameslink helps here, because it runs through the centre rather than terminating, so you may be able to join it without crossing London on the Tube.
Rail strikes and weekend engineering works are the real Gatwick risk, and those hit the airport link itself. Our Gatwick page and the London to Gatwick route cover the alternatives.
Stansted and Luton
The same pattern, with a sharper edge.
- Stansted — Stansted Express from Liverpool Street. The express is fine during a Tube strike; reaching Liverpool Street is the problem.
- Luton — Thameslink to Luton Airport Parkway, then the DART shuttle. Two connections, each of which can fail independently, and the DART has its own maintenance closures.
Both airports serve a lot of very early departures, which is exactly when replacement options are thinnest.
London City
The DLR is the primary link, and the DLR is frequently included in Underground industrial action — it was, for instance, scheduled to close on two days of the September 2026 strike.
There is no comparable rail alternative. When the DLR goes, road transport is essentially the only option, and everyone works that out at the same time.
Weekend engineering works
Strikes get the headlines; planned closures cause more missed flights, because people do not check for them. Engineering work concentrates on exactly the weekends people fly, and rail replacement buses add unpredictable time to a journey that had none.
Two habits worth forming:
- Check the specific line, for your specific date, not just "is there a strike".
- Treat a rail replacement bus leg as a reason to reconsider the whole journey, not as a minor substitution. A bus leg into a fixed check-in time is where the risk sits.
When a car is genuinely the better answer
Not always — an uninterrupted Elizabeth line run to Heathrow is hard to beat on price. The case for a car is strongest when:
- You are travelling before 6am or after 11pm, when rail options thin out anyway.
- Your journey needs two or more connections, each of which can fail.
- You are travelling with luggage, a group, or children — a crowded replacement bus with three suitcases is a bad hour.
- The disruption is on the day you fly, with no slack in your schedule.
- You are heading to London City during DLR action, where there is no real alternative.
Best airport transfers in the UK compares the options on ordinary days, which is the fairer comparison when nothing is broken.
Booking during disruption
Availability is the scarce thing, not price. When a strike is announced, the early slots go within days — and the people who booked first are the ones who checked the announcement rather than waiting to see if it would be called off.
Book as though it is happening. See how to book an airport taxi in advance for what to have ready, and give a flight number for arrivals so the pickup tracks the aircraft.
Frequently asked questions
Q: How do I get to Heathrow if the Tube is not running? A: The Elizabeth line and Heathrow Express are separately operated and usually keep running during Underground strikes, but both get very busy as displaced passengers switch. A door-to-door car avoids the connection entirely, which matters most for departures before 8am, when Tube services do not run at all on strike days.
Q: Do Tube strikes affect Gatwick trains? A: No. Gatwick is served by National Rail — Gatwick Express, Southern and Thameslink — which is a separate dispute with separate staff. The difficulty is reaching Victoria or London Bridge across a city with no Underground.
Q: Is the DLR affected by Tube strikes? A: Often, yes. The DLR is frequently included in London Underground industrial action, which is the main risk for London City Airport, since there is no comparable rail alternative to it.
Q: What happens to airport trains during engineering works? A: Planned closures usually mean a rail replacement bus for part of the route, which adds unpredictable time. These fall disproportionately on weekends, and they cause more missed flights than strikes because fewer people check for them.
Q: Should I book a taxi in advance if a strike might be called off? A: Generally yes. Early-morning slots sell out in the days after an announcement, well before anyone knows whether action will go ahead. A booking you no longer need is a smaller problem than a flight you cannot reach.
Q: Is a taxi to the airport worth it if trains are still running? A: On a normal day, often not — a direct express is cheaper and quicker. It becomes worth it when your journey needs multiple connections, when you are travelling very early or late, or when you have luggage or a group and the alternative is a crowded replacement bus.
In short
Check the leg you were not worrying about. The express to the airport is rarely the part that fails — crossing London to reach it is. When that leg is unreliable and your flight is not, a single door-to-door journey is the one that removes the risk.
Get a fare estimate for your airport journey, or start from taxis in London. We provide the journey directly with our own licensed drivers — no third parties, no forwarding.