London has six airports — so which London airport should you fly into? The right choice depends on your budget, where you are staying, and which airlines serve your US departure city. This guide compares every London airport so American travelers can make the best decision.
Remember: regardless of which London airport you use, you need a UK ETA to enter the United Kingdom.
| UK ETA factor | Detail | Cost / Time 2026 | For US travelers |
|---|---|---|---|
| Application fee | UK Home Office | £20 | ≈ $20 |
| Processing time | Standard online | 3 business days | Apply 5-7 days ahead |
| Validity | Multiple entry | 2 years or passport expiry | Whichever comes first |
| Maximum stay | Per entry | 6 months | Unlimited entries |
| Passport requirements | Biometric US passport | Min. 3 months valid | Check expiry |
London Airports at a Glance: Which London Airport to Fly Into
| Airport | Code | Distance to Central London | Transfer Time | Best For |
|---|---|---|---|---|
| Heathrow | LHR | 15 miles west | 15-60 min | Most US flights, business travelers |
| Gatwick | LGW | 30 miles south | 30-60 min | Budget US airlines, south England trips |
| London City | LCY | 6 miles east | 20-30 min | Business trips to Canary Wharf/City |
| Stansted | STN | 40 miles northeast | 50-90 min | European budget connections |
| Luton | LTN | 35 miles north | 40-60 min | European budget airlines |
| Southend | SEN | 40 miles east | 55-75 min | Very limited routes |
Heathrow Airport (LHR) — Best for Most American Travelers
Heathrow is the obvious choice when deciding which London airport to fly into from the US. Here is why:
- Handles 95%+ of nonstop US flights — British Airways, American Airlines, United, Delta, and Virgin Atlantic all fly here from multiple US cities
- 5 terminals — Terminal 5 (British Airways) and Terminal 2 (Star Alliance) are the most modern
- Best transport links:
- Elizabeth Line (Crossrail): £12.80 to central London, approximately 40 minutes to Paddington or Liverpool Street. Best value option
- Heathrow Express: £25, just 15 minutes to Paddington station. Fastest but priciest
- Piccadilly Line (Tube): £5.50 with Oyster/contactless, approximately 60 minutes to central London. Cheapest option
Verdict: If you have a nonstop flight from the US, it almost certainly lands at Heathrow. Choose it for convenience, transport options, and the widest range of US flights.
Gatwick Airport (LGW) — Budget Alternative
Gatwick is London’s second-largest airport and an increasingly popular option for budget-conscious American travelers:
- JetBlue flies nonstop from JFK to Gatwick — often significantly cheaper than Heathrow routes
- Norse Atlantic offers budget nonstop flights from several US cities to Gatwick
- Transport to London:
- Gatwick Express: £19.90, 30 minutes to Victoria station
- Thameslink/Southern trains: £12-15, 30-45 minutes to various London stations including London Bridge and St Pancras
- Great for: Travelers heading to south London, Brighton, or the south coast
Verdict: If you find a significantly cheaper fare to Gatwick (especially on JetBlue or Norse), it is worth considering. The rail link to central London is fast and reliable.
London City Airport (LCY) — Business Traveler’s Choice
London City is the smallest major London airport but has one unique advantage — it is just 6 miles from the City of London financial district:
- Limited US routes — primarily short-haul European flights and some domestic routes
- DLR (Docklands Light Railway): Quick connection to Bank station and Canary Wharf
- Best for: Business travelers with meetings in the City or Canary Wharf
- Note: Very few (if any) nonstop US flights. You would typically connect through a European hub
Stansted and Luton — Not for US Arrivals
Stansted (Ryanair hub) and Luton (easyJet/Wizz Air) primarily serve European budget airlines. They have no nonstop US flights and are further from central London. You would only use these if:
- You are connecting from a European city on a budget airline
- You are taking a side trip to Europe during your UK visit
Transport from both airports is slower and less convenient than Heathrow or Gatwick.
Which London Airport to Fly Into: Decision Guide
| Your Priority | Best Airport | Why |
|---|---|---|
| Most flight options from US | Heathrow | 95%+ of US nonstop flights |
| Cheapest fares from US | Gatwick | JetBlue and Norse budget fares |
| Fastest to central London | Heathrow | 15 min on Heathrow Express |
| Closest to City/Canary Wharf | London City | 6 miles, DLR direct |
| Heading to south England | Gatwick | Closer to Brighton, coast |
| Continuing to Europe | Stansted/Luton | Budget European connections |
Getting From Any London Airport to Your Hotel
Regardless of which London airport you fly into, here are your transport options:
- Oyster card or contactless: Works on all trains and the Tube from every airport except Southend. See Oyster vs Travelcard comparison
- Your US contactless card: Tap directly on the Tube and trains — no Oyster needed. See contactless payments guide
- Black cabs and Uber: Available at all airports but expensive (£50-100+ to central London)
- National Express coaches: Budget option from all airports. See coach comparison
For a complete guide to London transport, see our London Underground guide for Americans and UK transport prices guide.
FAQ: Which London Airport to Fly Into
Which London airport do most US flights land at?
Heathrow (LHR) handles the vast majority of nonstop transatlantic flights from the US. British Airways, American Airlines, United Airlines, Delta, and Virgin Atlantic all operate extensive US routes to Heathrow.
Is Gatwick or Heathrow better for Americans?
Heathrow offers more US flight options and faster transport to central London. Gatwick is better if you find a significantly cheaper fare (JetBlue, Norse Atlantic) or if you are heading to south England.
Do I need a UK ETA regardless of which airport I use?
Yes. The UK ETA is required at every UK airport and port of entry, no exceptions.
What is the cheapest way from Heathrow to central London?
The Piccadilly Line (Tube) costs £5.50 with Oyster/contactless and takes about 60 minutes. The Elizabeth Line costs £12.80 and takes 40 minutes — the best balance of speed and value.
Can I take the Tube from Gatwick?
No. Gatwick is not on the Tube network. You need the Gatwick Express train (£19.90, 30 min to Victoria) or a Thameslink train (£12-15, 30-45 min).
Which airport is closest to central London?
London City Airport (LCY) at just 6 miles, but it has very few US flights. Among airports with US service, Heathrow is closest at 15 miles.
Cheap flights to the UK | Plan your trip | UK ETA guide
Practical UK travel preparation guide for US visitors
For American travelers heading to the United Kingdom, good planning is essential. Direct flights from major US hubs to London Heathrow take 7-9 hours (NYC: 7h, LAX: 11h, ORD: 8h). British Airways, American Airlines, Delta, United, and Virgin Atlantic offer daily direct service from JFK, Newark, LAX, ORD, ATL, IAD, BOS, MIA. Prices vary widely: economy advance booking 2-4 months ahead offers $400-800 round-trip, last-minute can reach $1,500+. Premium economy adds $500-800 for more comfort on long flights. Direct flights to Manchester, Edinburgh, Glasgow are also available from major hubs.
UK ETA is mandatory for all US citizens since April 2, 2025 — regardless of stay duration. Apply via gov.uk or the official UK ETA app, pay £20 (≈$25), and expect approval within 24-48 hours in 95% of cases. Ensure your passport is valid at least 3 months beyond your planned return date — UK ETA is linked to the passport number and becomes automatically invalid if you renew your passport. Keep approval email digital and on paper as backup.
For local transport in the UK, use contactless payment with a Visa/Mastercard (no foreign transaction fees if your card supports it). London Underground, buses, DLR, and suburban trains accept all these methods with daily price capping (£8.50 for zones 1-2). For longer journeys, the Trainline app is the best platform — Advanced fares booked 12 weeks ahead are 50-70% cheaper than walk-up tickets. Britain has a privatized rail system, so prices vary between operators (Avanti West Coast, GWR, LNER).
British culture and etiquette for American visitors
British politeness is legendary and may differ from American directness. “Sorry”, “Please” and “Thank you” are used constantly — even without obvious reason. Expect “How are you?” to be a politeness phrase, not a serious question — answer simply with “Fine thanks, you?” British humor is dry and ironic, often self-deprecating. Tipping is appreciated but not at US levels — 10-12.5% in restaurants is standard (often included as “service charge” automatically). At pubs, you order at the bar and pay immediately — no tipping needed. Queues are sacred — pushing past someone is the worst social faux pas in UK.
For American families visiting UK, there are abundant cultural experiences. London offers British Museum, National Gallery, and Tate Modern — all free. Tower of London costs £33.60 per adult (children 5-15 years £16.80). Buckingham Palace opens for visits August-September for £30. Harry Potter Studio Tour in Watford is wildly popular ($65/adult); book 8-10 weeks ahead. For West End musicals, book through TodayTix app for the best last-minute prices. Pub culture is central to British social life — traditional pubs serve food 12:00-14:00 and 18:00-21:00.
FAQ for American UK travelers
How long does the UK ETA application take?
Standard processing time is 3 business days online. In 95% of cases American applicants receive approval within 24-48 hours. Apply at least 5-7 days before departure — Home Office may in rare cases request additional documentation, extending the process to 5-10 business days. Filling out the form itself takes only 10 minutes when you have your passport, credit card, and travel info ready.
What does UK ETA cost in 2026?
UK ETA costs £20 (approximately $25) per person from April 8, 2026. There are no extra fees if you apply directly via gov.uk or the official UK ETA app. Beware of third-party websites that charge “service fees” up to £80 — these are not necessary and explicitly discouraged by UK Home Office. Use Visa or Mastercard for payment.
How does UK ETA differ from US ESTA?
UK ETA and US ESTA are similar concepts — both are electronic pre-screening for visa-exempt travel. UK ETA costs £20 vs US ESTA at $21. UK ETA is valid for 2 years vs ESTA 2 years (recently changed from 2). Both authorize multiple entries with stay limits — UK 6 months per entry, ESTA 90 days per entry. Apply directly via official government portal — never third-party services.
How much should I budget for a week in UK?
For a week-long UK trip from US: flight $400-800 round-trip (advance booking), hotel $100-200 per night, food $50-80 per day, local transport $20-40 per day, attractions $30-60 per day. Daily budget: $200-380 per person plus one-time UK ETA $20. London is most expensive — Manchester, Edinburgh, Liverpool 25-35% cheaper. Total realistic week-long budget: $1,500-2,800 per person.
How many times can I travel with the same ETA?
UK ETA is a multiple-entry permission valid for 2 years (or until your passport expires, whichever comes first). You can travel in and out as often as you wish during the validity period, with up to 6 months stay per entry. This means you can use the same ETA for weekend trips, summer vacations, and business travel without applying again.
Do I need ETIAS too if visiting Europe after UK?
Yes, if you plan to visit any of 30 European countries (EU + Schengen-associated states), you will need ETIAS as well, launching late 2026. ETIAS costs €7 and is valid 3 years. UK ETA only covers UK (England, Scotland, Wales, Northern Ireland). Both pre-screening systems are required for Americans crossing both jurisdictions — neither replaces the other.