Prices last checked: Oct 27, 2026
Cheapest US departure cities for London right now
Every route into LHR we checked in the last week, cheapest first. Each fare is for the month and sample dates shown.
| From | Round trip | Checked | |
|---|---|---|---|
| ORDChicagoCHEAPEST | $853 | Oct 27 | Set a free alert |
| PDXPortland | $1,021 | Oct 27 | Set a free alert |
| SLCSalt Lake City | $1,141 | Oct 27 | Set a free alert |
Observed fares from Wildly's daily check, snapshot Oct 27. Round trip, economy, for the sample dates shown; not an estimate and not a bookable offer. How we check fares
Origin guides: flights from Chicago, flights from Portland, flights from Salt Lake City
When to go to London and what it costs
The next twelve months. Weather and crowds are from our destination research; the fare is the lowest round trip we observed for that month on any US route we check.
- October 2026no observation yet
- Weather
- 58°F high, 46°F low, 13 rain days
- Crowds
- medium
Autumn colors in the Royal Parks are spectacular, and the city returns to a normal working rhythm after summer. Bring layers — mornings and evenings get genuinely chilly by mid-month. - November 2026Worst month per research$854from SLC, checked Oct 25
- Weather
- 51°F high, 42°F low, 15 rain days
- Crowds
- low
Grey and wet, but pre-Christmas London starts lighting up in late November with markets and decorations. Low season prices and thin crowds make up for the gloomy skies. - December 2026$1,141from SLC, checked Oct 27
- Weather
- 46°F high, 38°F low, 15 rain days
- Crowds
- medium
Cold and dark but festive — the Christmas markets, ice rinks at Somerset House and Natural History Museum, and Oxford Street lights make December genuinely magical, though expensive. - January 2027Worst month per research$1,036from SLC, checked Oct 25
- Weather
- 46°F high, 38°F low, 15 rain days
- Crowds
- low
Cold, grey, and damp — London in January is the city at its most atmospheric and least photogenic. Daylight runs only about 8 hours, but indoor attractions are blissfully uncrowded. - February 2027Worst month per research$839from SLC, checked Oct 25
- Weather
- 48°F high, 38°F low, 13 rain days
- Crowds
- low
Nearly identical to January but with a few more clear days and slightly longer evenings. Valentine's Day sees restaurant prices spike; otherwise this is the cheapest month to visit. - March 2027$896from SLC, checked Oct 25
- Weather
- 52°F high, 41°F low, 12 rain days
- Crowds
- medium
Spring begins to announce itself — daffodils in the Royal Parks, longer days, and occasional sunny stretches. Still pack a waterproof jacket; cold snaps are common through mid-month. - April 2027$993from SLC, checked Oct 25
- Weather
- 57°F high, 44°F low, 12 rain days
- Crowds
- medium
Unpredictable but often lovely — London can serve up 65°F sunshine one day and sideways rain the next. The parks are stunning, and Easter brings crowds to the major museums. - May 2027Best month per researchno observation yet
- Weather
- 64°F high, 49°F low, 10 rain days
- Crowds
- high
One of the best months — long days, blooming Hyde Park, outdoor pub gardens filling up, and temperatures warm enough to ditch the heavy coat. Crowds are building but haven't peaked. - June 2027Best month per researchno observation yet
- Weather
- 70°F high, 54°F low, 10 rain days
- Crowds
- very high
Genuinely warm and bright, with daylight until nearly 10pm. Wimbledon queues, Trooping the Colour, and the first wave of summer tourists all collide — book everything early. - July 2027Best month per researchno observation yet
- Weather
- 75°F high, 58°F low, 9 rain days
- Crowds
- very high
The warmest month, with occasional heat waves pushing into the 90s°F. Londoners go feral in the parks at any hint of sun; hotel prices are at their annual peak. Worth it if you can swing it. - August 2027no observation yet
- Weather
- 74°F high, 57°F low, 10 rain days
- Crowds
- very high
Still warm, still expensive, and school holidays mean extra crowds. Notting Hill Carnival on the August Bank Holiday weekend is genuinely unmissable if you plan around it. - September 2027Best month per researchno observation yet
- Weather
- 67°F high, 52°F low, 11 rain days
- Crowds
- high
Arguably the best month to visit — crowds thin out after Labor Day, prices drop slightly, and September often delivers long warm spells ('London's Indian summer') with brilliant light.
Observed fares from Wildly's daily check, snapshot Oct 27. Round trip, economy, for the sample dates shown; not an estimate and not a bookable offer. How we check fares
Weather, crowds and best months: Wildly destination research.
Routes we watch into LHR
Each route page has the daily fare, a fare-by-month calendar and price history where we have it.
US departure cities for London
Origin guides for the cities with a tracked route to LHR. Each lists the cheapest live fares from that airport.
Estimate: modelled from route distance and region, not an observed fare. Observed fares, where we have them, are in the sections above.
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Estimated prices from all US cities (estimate)
Estimate: modelled from route distance and region, not an observed fare. Observed fares, where we have them, are in the sections above.
| From | Airport | Est. Price | Flight Time | |
|---|---|---|---|---|
LOWEST EST.Boston | BOS | $274 | ~8h | View → |
New York | LGA | $289 | ~8h | View → |
New York | JFK | $290 | ~8h | View → |
Newark | EWR | $291 | ~8h | View → |
Philadelphia | PHL | $297 | ~8h | View → |
Baltimore | BWI | $305 | ~8h | View → |
Washington D.C. | DCA | $307 | ~8h | View → |
Detroit | DTW | $316 | ~9h | View → |
Chicago | ORD | $332 | ~9h | View → |
Charlotte | CLT | $335 | ~9h | View → |
Minneapolis | MSP | $336 | ~9h | View → |
Nashville | BNA | $351 | ~9h | View → |
San Juan | SJU | $351 | ~9h | View → |
St. Louis | STL | $352 | ~9h | View → |
Atlanta | ATL | $353 | ~9h | View → |
Orlando | MCO | $364 | ~10h | View → |
Fort Lauderdale | FLL | $370 | ~10h | View → |
Tampa | TPA | $370 | ~10h | View → |
Miami | MIA | $371 | ~10h | View → |
Denver | DEN | $392 | ~10h | View → |
Dallas | DFW | $398 | ~10h | View → |
Seattle | SEA | $402 | ~11h | View → |
Houston | IAH | $405 | ~11h | View → |
Salt Lake City | SLC | $408 | ~11h | View → |
Portland | PDX | $412 | ~11h | View → |
Austin | AUS | $412 | ~11h | View → |
Las Vegas | LAS | $438 | ~11h | View → |
Phoenix | PHX | $442 | ~12h | View → |
San Francisco | SFO | $450 | ~12h | View → |
Los Angeles | LAX | $458 | ~12h | View → |
San Diego | SAN | $460 | ~12h | View → |
About London
London is the kind of city that makes every other city feel slightly inadequate. It's expensive, yes — brutally so compared to most of Europe — but it delivers on a scale that justifies the spend. The British Museum alone could absorb three days, and it's free. So are the National Gallery, the Tate Modern, the V&A, the Natural History Museum, and most of the best collections in town. The real cost of London isn't admission fees; it's the pints at £7 each, the Tube fares that add up fast, and the restaurants where a mid-range dinner for two easily hits £100. Budget accordingly or you'll spend your whole trip feeling nickel-and-dimed.
For Americans, London has an obvious appeal: no language barrier, cultural familiarity, and a sense of history that makes even Boston feel like a new development. But don't mistake familiarity for sameness. The neighborhoods feel genuinely distinct — Shoreditch's post-industrial creative scene, Notting Hill's pastel townhouses and Caribbean food culture, Brixton's Afro-Caribbean energy, the City's glass towers next to Roman ruins. London rewards lateral movement. Get out of the tourist core around Westminster and Covent Garden and you'll find a city that feels alive, not curated.
Flight prices from the US to Heathrow are fiercely competitive — British Airways, Virgin Atlantic, Delta, American, and United all run nonstop routes from multiple US hubs, which keeps fares honest. The sweet spot for cheap transatlantic tickets to London is typically January through early March (post-holiday slump) and late October through November. Summer is expensive because demand is real: London in June and July is genuinely excellent. The shoulder seasons of April-May and September-October are the savvy traveler's move — good weather, manageable crowds, better hotel rates.
One logistical note that trips up first-timers: Heathrow is massive and far west of the city. Budget at least an hour to get to central London even on the Tube. Also consider Gatwick (LGW) or Stansted (STN) if your fare options look better there — budget carriers like Norwegian and easyJet sometimes offer meaningfully cheaper transatlantic or intra-Europe connections through those airports. But for direct US service, LHR is where almost everything lands.
Best Time to Fly to London
Click any month for the destination guide's weather, crowd, and festival notes.
Airport to City: How to Get There
The Heathrow Express is the fastest option — 15 minutes nonstop to Paddington Station, runs every 15 minutes, costs £25 one-way (£37 round-trip if booked in advance online, cheaper than walk-up). From Paddington you can Tube or taxi anywhere. The Piccadilly Line on the London Underground is the budget option at £6.70 with an Oyster card — takes 45-55 minutes to central London stops like Green Park, Covent Garden, or King's Cross, with multiple stops. It's crowded at peak times but perfectly functional for travelers without massive luggage. Black cab to central London runs £55-£85 depending on traffic and destination; Uber is typically £40-£65 and picks up from the rideshare zone. Skip the National Express bus — it's cheap but takes 1.5 hours minimum and isn't worth the savings over the Tube.
Neighborhoods & Where to Stay
East London's creative heartland — street art, rooftop bars, vintage markets, and some of the city's best restaurants without the tourist markup. The area around Brick Lane and Spitalfields is walkable, lively until late, and home to a genuinely good hostel and boutique hotel scene. Stay here if you want to feel like a Londoner rather than a tourist.
Walking distance from Tate Modern, Borough Market, Shakespeare's Globe, and the river path east to Tower Bridge — this is arguably the most rewarding neighborhood for first-timers who still want to feel some local energy. Good mid-range hotels, excellent food options, and you can cross into the City or Clerkenwell easily on foot.
Portobello Road Market on Saturdays, Caribbean food on Golborne Road, and excellent Tube access via Central and Circle lines. Hotels here tend to be better value than in Mayfair or Knightsbridge for similar quality. Avoid the tourist-trap restaurants immediately around Notting Hill Gate station — walk two blocks and prices drop.
The Connaught, Claridge's, The Dorchester — if you're going luxury, this is where London does it properly. Everything within walking distance: Buckingham Palace, the National Gallery, Hyde Park, Bond Street shopping. Dinner at Scott's on Mount Street or lunch at The Wolseley nearby is a quintessential London experience worth the splurge.
The area around King's Cross has transformed completely since the St. Pancras redevelopment — it's now home to the Coal Drops Yard shopping and dining complex, great coffee shops, and some of the best-value accommodation in central London. Superb Tube connections (6 lines) and Eurostar access make it ideal for travelers planning side trips.
Victoria line, 15 minutes from Victoria station — Brixton punches above its weight for food, music, and nightlife. The covered market has incredible Caribbean, West African, and international street food. Stay here if budget is a real constraint and you want authentic London neighborhood energy instead of tourist-zone generic.
Daily Budget: What to Expect
£18 dorm bed at Generator Hostel or YHA London Central, £12 grocery-store meals (Pret A Manger breakfast + Sainsbury's lunch + market dinner), £8 Oyster card daily travel cap for zones 1-2, £8 one paid attraction or pub pint — lean on free museums hard
£100-130 Travelodge/Premier Inn or Airbnb private room, £40 food (full English breakfast at a café, lunch at Borough Market, dinner at a proper gastropub like The Anchor & Hope), £15 Oyster travel, £25 one museum/experience like the Tower of London or a theater matinee
£300+ boutique hotel in Marylebone or Fitzrovia, £150 food (dinner at a Michelin-recommended restaurant like Brat or Kiln, plus drinks), £30 black cab/Uber travel, £50-100 on West End theater tickets or guided private tour, shopping and extras separate
What to Eat in London
A proper full English breakfast at E. Pellicci in Bethnal Green (cash only, Formica tables, family-run since 1900, a Grade II listed café) — eggs, bacon, sausage, black pudding, beans, toast, for about £12. This is the real thing, not a hotel buffet imitation.
Beef brisket and bone marrow pie at Benny's Pie & Mash or a pie from the Pieminister stall at Borough Market — a London working-class staple that most tourists completely miss while queuing for the paella stand.
Sri Lankan street food at Hoppers on Frith Street in Soho — the lamb kothu roti and egg hopper with sambol are extraordinary, prices are reasonable, and no reservations means it's democratic. Get there at 11:45am when they open or expect a queue.
Salt beef bagel at Beigel Bake on Brick Lane (open 24 hours, £5, cash only) — hot salt beef, yellow mustard, pickled gherkin on a fresh bagel. This is the best thing you'll eat in London at any price point. No debate.
Afternoon tea at Bettys-equivalent quality but actually in London: try The Wolseley on Piccadilly (£36 per person) or Fortnum & Mason's Diamond Jubilee Tea Salon (£75) if you want the full ceremony with proper finger sandwiches, scones with clotted cream, and a calm room — book 2-3 weeks in advance.
Flying from the US to London
Airlines & Routes
- →British Airways nonstop from JFK, EWR, BOS, MIA, ORD, LAX, SFO, SEA, PHX, DFW, CLT, PHL
- →Virgin Atlantic nonstop from JFK, EWR, BOS, MIA, ORD, LAX, SFO, SEA, ATL, DFW, DTW, MCO
- →Delta nonstop from JFK, BOS, ATL, LAX, SEA, DTW, MSP, SLC
- →American Airlines nonstop from JFK, MIA, PHL, ORD, DFW, LAX, PHX
- →United nonstop from EWR, IAD, ORD, SFO, LAX, DEN, IAH
- →Norse Atlantic nonstop from JFK, LAX, FLL, BOS (budget carrier, basic fares)
- →Level nonstop from BOS (low-cost, check baggage fees carefully)
- →Aer Lingus via Dublin from BOS, JFK, ORD, LAX, MIA, SFO, ATL, DFW (pre-clears US customs in Dublin)
Flight Duration
Safety Tips
London is very safe by major world-city standards, but pickpocketing is real and targeted at tourists. Keep your phone in your front pocket or bag and don't hold it out on busy streets or Tube platforms — phone snatching is the fastest-growing petty crime in central London. Borough Market, Oxford Street, and Camden Market are the three highest-risk areas. The Tube is safe at nearly all hours, though avoid the last Central Line trains on weekends when they fill with heavily drunk people after 1am. Night buses are fine and cheap if you miss the last Tube (which ends around midnight, 12:30am weekends). Avoid unlicensed minicabs — only use the Uber app or official black cabs hailed on the street. There's a small but active ticket-tout scene outside West End theaters; buy only from official box offices or TodayTix app.
Buy an Oyster card at any Tube station immediately on arrival and use contactless pay (your US Mastercard/Visa works perfectly on Tube gates and buses) — but check whether your card charges foreign transaction fees first. If it does, top up the Oyster card instead. The real money saver: London's free museums are genuinely world-class, so structure your trip to spend most of your activity budget on one big paid experience per day (Tower of London, Kew Gardens, a West End show via TodayTix's 'Rush' feature for same-day discounted tickets at £20-30) and fill the rest with free museums. The National Portrait Gallery just completed a major renovation and is currently excellent with zero admission charge.
Frequently Asked Questions
Which US city has the cheapest flights to London right now?
Chicago (ORD): $853 round trip for December on Icelandair, checked Oct 27. That was the lowest of 3 US routes into LHR in our daily check.
What is the cheapest month to fly to London?
February 2027 had the lowest observed fare: $839 round trip from SLC, checked 2026-10-25. Months without an observation are marked as such in the grid above; we do not estimate them.
What is the best time to visit London?
May, June, July, September per Wildly destination research, based on weather and crowd levels rather than airfare. The months it rates worst are January, February, November.
Do US citizens need a visa to visit London?
US passport holders get automatic entry to the UK for up to 6 months as a visitor — no visa required. However, since January 2024 the UK has introduced a new Electronic Travel Authorisation (ETA) requirement for Americans. You must apply online before travel (via the UK ETA app or GOV.UK website) — it costs £10 and is typically approved within minutes to 72 hours. It's valid for 2 years with multiple entries. Don't skip this step; airlines are checking at check-in. Your passport must be valid for the duration of your stay — no 6-month buffer rule applies here unlike some countries. Source: Wildly destination research; verify with the destination's official immigration authority before booking.
How long is the flight from the US to London?
East Coast: 6.5-7.5 hours nonstop from JFK/BOS/MIA; 8-10 hours with one connection. Midwest: 8-9 hours nonstop from ORD/DTW; 9-11 hours with connection from smaller hubs. West Coast: 9.5-11 hours nonstop from LAX/SFO/SEA; 12-14 hours with connection. Source: Wildly destination research.
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