Airlines price routes independently. Sometimes flying A → London → B costs less than A → B direct. The difference is your savings — and London is your free city.
Every intercontinental carrier competes through Heathrow — that competition is the discount. In three hours: Borough Market on a weekday morning, the Tate Modern walk-in free, and the Thames between them. The savings are structural. So is the Elizabeth line back.
If you do one thing in London
Walk Sir John Soane's Museum in Lincoln's Inn Fields — bizarre and brilliant.
The Shadow Price — what the savings actually buy
$440
avg saving on route
$150
per day in London
+$290
net after 24h stop
Still $140 ahead after 48h — the stopover pays for itself.
→DoWalk Sir John Soane's Museum in Lincoln's Inn Fields — bizarre and brilliant.
◆EatChicken tikka masala — London invented it, London does it best.
✕SkipMadame Tussauds — an hour in a queue to see wax.
London — Airport to City Centre
Elizabeth Line
40 min · £13
Stopover Prep Checklist+
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Check visa requirements for London
Visa-free for some passports — verify yours
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Plan airport → city route
Elizabeth Line — 40 min, £13
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Get eSIM or local SIM
Download eSIM app before departure (Airalo, Holafly)
🧳
Luggage storage if needed
Airport lockers or city-center storage (Bounce, LuggageHero)
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Buffer 6+ hours minimum
40 min each way + security/immigration buffer
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Budget ~$150/day
Covers food, transit, and one activity
$440 saved. That's 2+ days here.
$440saved on this route
$440 covers two Zone 2 hotel nights, three free museum visits (British Museum, National Gallery, Tate Modern all free), and Borough Market breakfast every morning. London costs $150 a day — but the culture here costs nothing.
$440 → 2+ days in London. Go spend it.
$150/day average · each block = 1 day the fare gap covers
London Visa Requirements
10 of 15 passports visa-free
Visa-free (10)
🇺🇸US
🇬🇧UK
🇨🇦CA
🇦🇺AU
🇪🇺EU
🇯🇵JP
🇰🇷KR
🇧🇷BR
🇸🇬SG
🇲🇽MX
Visa required (5)
🇮🇳IN
🇨🇳CN
🇿🇦ZA
🇳🇬NG
🇵🇭PH
Is London Safe to Visit?
✓ Safe✓ English-friendly
Best monthsMar, May, Jul, Aug…
◎ Weather
MayBest month — 14–18°C, long evenings, parks buzzing.
AprUnpredictable — 10–15°C. Could be perfect, could be monsoon.
JunWimbledon season — 17–21°C. Tourist peak begins.
◎
Base yourself here
South Bank / Waterloo — free Tate Modern, Borough Market, Southwark Cathedral, and the Thames path all walkable. Elizabeth line 15 minutes to Heathrow.
Walk Sir John Soane's Museum in Lincoln's Inn Fields — get notified the moment this route drops.
$150/day in London. The $440 route saving already covers the stop — you just need the price to hold. Founding members get the badge permanently — not available after the first 500.
Members saved an avg of $440 on London stopovers last month
9 members watching London routes
◆ Founding Member badge · permanently on your Detour Passport · never available again after 500
Free during beta — no credit card required
$440
avg savings on London stopovers
Find routes where a stopover in London saves you money.
Most passport holders can enter London visa-free — 10 of 15 nationalities we track. Check your specific passport requirements before travel as rules change.
QHow do I get from London airport to the city center?
The main transit option is Elizabeth Line — approximately 40 minutes to the city center, costing £13. Check operating hours if arriving late at night. Best area to base yourself: South Bank / Waterloo — free Tate Modern, Borough Market, Southwark Cathedral, and the Thames path all walkable. Elizabeth line 15 minutes to Heathrow..
QIs 6 hours enough for a London stopover?
Yes — 6 hours is the minimum we recommend. Piccadilly to Trafalgar Square on foot, free entry to the National Gallery. For a fuller experience, 12–24 hours lets you borough market for breakfast, tate modern, thames walk to tower bridge.. Don't miss: Walk Sir John Soane's Museum in Lincoln's Inn Fields — bizarre and brilliant..
QIs London worth a stopover?
Yes — London is one of the stronger stopover picks. Average route savings of $440, daily costs around $150. English-friendly and low-stress transit makes it easy.
QWhat's the cheapest way to visit London?
Book a flight with a London stopover instead of flying direct. Routes through London can save $440 on average — the city visit is essentially free. Budget ~$150/day once you're there.
QWhen is the best time to visit London?
Best months for a London stopover: March, May, July, August. Avoid January and November if possible. Check the weather section above for month-by-month conditions.
QIs London safe for solo travelers?
London is rated safe for solo travelers. English is widely spoken, making navigation easy. Plan transport for late-night arrivals. Standard precautions apply — keep valuables secure and stay aware of your surroundings.