Cheap flight tickets from London to Chennai

Select preferred month for the cheapest flights

• OctOctober2025

  ‐

  Average monthly temperature & precipitation

  Temperature 28°C

  Precipitation 64%

  Check available flights
  Select October

• NovNovember2025

  £382

  Average monthly temperature & precipitation

  Temperature 28°C

  Precipitation 66%

  Average price £382
  Select November

• DecDecember2025

  Best for exploring

  £430

  Average monthly temperature & precipitation

  Temperature 25°C

  Precipitation 48%

  Average price £430
  Select December

• JanJanuary2026

  Best for exploring

  £413

  Average monthly temperature & precipitation

  Temperature 25°C

  Precipitation 25%

  Average price £413
  Select January

• FebFebruary2026

  Cheapest

  £269

  Average monthly temperature & precipitation

  Temperature 26°C

  Precipitation 3%

  Average price £269
  Select February

• MarMarch2026

  ‐

  Average monthly temperature & precipitation

  Temperature 27°C

  Precipitation 12%

  Check available flights
  Select March

• AprApril2026

  ‐

  Average monthly temperature & precipitation

  Temperature 29°C

  Precipitation 16%

  Check available flights
  Select April

• MayMay2026

  Warmest

  ‐

  Average monthly temperature & precipitation

  Temperature 31°C

  Precipitation 22%

  Check available flights
  Select May

• JunJune2026

  ‐

  Average monthly temperature & precipitation

  Temperature 30°C

  Precipitation 40%

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  Select June

• JulJuly2026

  ‐

  Average monthly temperature & precipitation

  Temperature 30°C

  Precipitation 54%

  Check available flights
  Select July

• AugAugust2026

  ‐

  Average monthly temperature & precipitation

  Temperature 29°C

  Precipitation 61%

  Check available flights
  Select August

• SepSeptember2026

  ‐

  Average monthly temperature & precipitation

  Temperature 29°C

  Precipitation 63%

  Check available flights
  Select September

Average monthly temperature & precipitation