Find the cheapest flights from London to Buenos Aires in 2026. Compare airlines, prices by month, and booking tips to save on your trip.
Route: London (LHR) → Buenos Aires (EZE)
Distance: Direct flights not available
Flight Duration: 13-17 h with 1 stop
Prices by Month
| Month | Avg Price | Demand |
|---|---|---|
| January | €700 | high |
| February | €580 | medium |
| March | €480 | low |
| April | €420 | low |
| May | €480 | low |
| June | €550 | medium |
| July | €720 | high |
| August | €740 | high |
| September | €450 | low |
| October | €520 | medium |
| November | €460 | low |
| December | €780 | high |
Airlines on This Route
- British Airways (direct): from €550 — Book 10-12 weeks ahead for best direct flight prices. BA often runs sales in January and September. Use their site directly to see reward flight availability.
- Iberia (connecting): from €480 — Madrid is the hub for this route. Tuesday-Wednesday connections often cheapest. Check IB’s website in Spanish for sometimes lower prices than English version.
- LATAM (connecting): from €520 — LATAM often has competitive prices via São Paulo. Their multi-city fares can work out cheaper if you’re flexible with dates.
- KLM/Air France (connecting): from €500 — Check both KLM and Air France websites – prices differ slightly. Use their flexible date search to find cheapest days.
Booking Strategy
For London to Buenos Aires, book 8-12 weeks ahead for the best prices. The sweet spot is typically 10 weeks before departure when airlines release their optimal fare buckets. Direct British Airways flights are most expensive but most convenient; connecting flights via Madrid (Iberia) or Amsterdam (KLM) can save €100-200. Tuesdays and Wednesdays are consistently cheapest for departures, with Thursday being the priciest day. Use Skyscanner or Google Flights to compare, but book directly with the airline to avoid third-party booking fees. Argentine peso fluctuations affect pricing, so EUR-denominated tickets are more stable. Avoid mid-December to mid-January and July-August for peak pricing. Set price alerts for LHR-EZE and consider alternate airports like Gatwick if BA adds seasonal services.
Route Tips
- Book British Airways direct flights at least 10 weeks ahead – they fill up quickly and prices rise sharply within 6 weeks of departure.
- Ezeiza Airport has efficient but slow immigration – budget 45-60 minutes after landing. Have your migration card ready.
- If holding a UK passport, you get 90 days visa-free in Argentina. No advance visa needed – just a valid passport and return ticket.
- Consider arriving at Heathrow Terminal 5 for BA flights – it’s the most efficient terminal with faster security and better lounge options.
- For the best exchange rates on Argentine pesos, bring EUR cash and exchange in the city rather than at the airport. Use reputable casas de cambio in Microcentro.
- If connecting via Madrid (Iberia), book a longer layover (4-6 hours) to explore the airport’s excellent shopping and restaurants – it’s worth breaking up the long journey.
Frequently Asked Questions
How long is the flight from London to Buenos Aires?
Direct flights from London Heathrow to Buenos Aires Ezeiza take approximately 14 hours and 30 minutes. This is one of the longest non-stop routes from the UK. If you opt for connecting flights, expect 13-17 hours total travel time depending on your layover – the shortest indirect routes go via Madrid with Iberia (13h 30m), while connections via São Paulo with LATAM can take 16-17 hours. Early morning departures from London typically result in shorter overall travel times due to better connection bank connections in Europe.
How much does it cost to fly from London to Buenos Aires?
Expect to pay €420-780 depending on season and booking timing. The cheapest economy fares start around €420-480 in low season (April, May, September, November), while peak season (December, January, July, August) sees prices from €700-780. Direct British Airways flights typically cost €100-200 more than connecting options via Madrid, Amsterdam or Paris. Business class runs €2,500-4,500. Booking 10 weeks ahead typically yields the best value, and setting price alerts on Skyscanner helps catch flash sales from carriers like Iberia and British Airways.
Are there direct flights from London to Buenos Aires?
Yes, British Airways operates direct flights from London Heathrow (LHR) to Buenos Aires Ezeiza (EZE). The service runs daily and takes 14h 30m. This is the only direct option from London, operated by Boeing 777-300ER aircraft with business, premium economy, and economy cabins. No other airline offers non-stop service on this route. If you prefer to avoid the long direct flight, connecting options are available through Madrid (Iberia), Amsterdam (KLM), Paris (Air France), Frankfurt (Lufthansa), or São Paulo (LATAM).
What is the cheapest month to fly from London to Buenos Aires?
April and September offer the lowest fares, with average prices around €420-450. These shoulder seasons avoid both the UK and Argentine summer peak periods. May and November also provide good value at €460-480. The most expensive months are December (€780), January (€700), and July-August (€720-740) when demand peaks from both British and Argentine travelers. February and October fall in the middle range at €520-580. If your schedule is flexible, aim for late April or mid-September for the best combination of low prices and decent weather in Buenos Aires.
Which airlines fly from London to Buenos Aires?
British Airways offers the only direct service from London Heathrow. Connecting carriers include Iberia (via Madrid, typically cheapest at €480), LATAM (via São Paulo, good for South American connections), Lufthansa (via Frankfurt), KLM (via Amsterdam), and Air France (via Paris). Aerolíneas Argentinas also operates connecting flights via Madrid. British Airways and Iberia tend to have the most frequency, while LATAM is strong if you want to combine with other South American destinations. Budget carriers don’t serve this route – all flights include at least one checked bag.
What airport do I fly into in Buenos Aires?
You’ll arrive at Ministro Pistarini International Airport (EZE), commonly called Ezeiza, located 22km (14 miles) southwest of central Buenos Aires. This is Argentina’s main international gateway. Aerolíneas Argentinas and some regional flights also use Aeroparque Jorge Newbery (AEP) in the city center, but virtually all London arrivals come through Ezeiza. From EZE to downtown, official taxis cost around €25-30 (ARS 15,000-18,000), rideshares are similar, and the Tienda León bus service runs every 30 minutes for around €5 (ARS 3,000). Allow 30-45 minutes to reach the city depending on traffic.
How far in advance should I book London to Buenos Aires flights?
Book 8-12 weeks ahead for optimal pricing. The sweet spot is typically 10 weeks, when airlines release their best fare classes. Booking too early (6+ months) sometimes results in higher prices as airlines haven’t released discounted inventory yet, while last-minute bookings (under 2 weeks) rarely offer deals on this route due to consistent demand. For peak season travel (Christmas, New Year, July), book 12-14 weeks ahead to secure availability and reasonable prices. Shoulder season trips can sometimes be booked 6-8 weeks ahead with acceptable fares.
Is it cheaper to fly from London to Buenos Aires on weekdays?
Yes, Tuesday and Wednesday departures are typically 10-15% cheaper than weekend flights. Thursday is usually the most expensive day to fly on this route, followed by Friday and Saturday. Sunday falls in the middle. For a €500 return fare, flying Tuesday-Wednesday instead of Thursday-Saturday can save €50-75. However, the bigger price factor is departure date – a Tuesday in April will be far cheaper than a Wednesday in December. Use Skyscanner’s ‘whole month’ view to identify the cheapest date combinations, and consider adjusting your travel dates by a few days to find significant savings.
Data updated: 2026-03
