Cheap flight tickets from London to Cardiff

Select preferred month for the cheapest flights

• NovNovember2025

  Cheapest

  £74

  Average monthly temperature & precipitation

  Temperature 11°C

  Precipitation 56%

  Average price £74
  Select November

• DecDecember2025

  £246

  Average monthly temperature & precipitation

  Temperature 8°C

  Precipitation 54%

  Average price £246
  Select December

• JanJanuary2026

  ‐

  Average monthly temperature & precipitation

  Temperature 5°C

  Precipitation 54%

  Check available flights
  Select January

• FebFebruary2026

  ‐

  Average monthly temperature & precipitation

  Temperature 7°C

  Precipitation 50%

  Check available flights
  Select February

• MarMarch2026

  £290

  Average monthly temperature & precipitation

  Temperature 7°C

  Precipitation 51%

  Average price £290
  Select March

• AprApril2026

  £227

  Average monthly temperature & precipitation

  Temperature 8°C

  Precipitation 40%

  Average price £227
  Select April

• MayMay2026

  ‐

  Average monthly temperature & precipitation

  Temperature 12°C

  Precipitation 48%

  Check available flights
  Select May

• JunJune2026

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  Average monthly temperature & precipitation

  Temperature 13°C

  Precipitation 46%

  Check available flights
  Select June

• JulJuly2026

  £277

  Average monthly temperature & precipitation

  Temperature 15°C

  Precipitation 45%

  Average price £277
  Select July

• AugAugust2026

  Best for exploring

  £351

  Average monthly temperature & precipitation

  Temperature 16°C

  Precipitation 45%

  Average price £351
  Select August

• SepSeptember2026

  Best for exploring

  Warmest

  ‐

  Average monthly temperature & precipitation

  Temperature 18°C

  Precipitation 46%

  Check available flights
  Select September

• OctOctober2026

  ‐

  Average monthly temperature & precipitation

  Temperature 11°C

  Precipitation 48%

  Check available flights
  Select October

Average monthly temperature & precipitation