Cheap flight tickets from London to Hanoi

Select preferred month for the cheapest flights

• OctOctober2025

  £451

  Average monthly temperature & precipitation

  Temperature 25°C

  Precipitation 45%

  Average price £451
  Select October

• NovNovember2025

  £377

  Average monthly temperature & precipitation

  Temperature 26°C

  Precipitation 40%

  Average price £377
  Select November

• DecDecember2025

  Best for exploring

  Cheapest

  £350

  Average monthly temperature & precipitation

  Temperature 17°C

  Precipitation 25%

  Average price £350
  Select December

• JanJanuary2026

  £422

  Average monthly temperature & precipitation

  Temperature 17°C

  Precipitation 38%

  Average price £422
  Select January

• FebFebruary2026

  Best for exploring

  £510

  Average monthly temperature & precipitation

  Temperature 19°C

  Precipitation 32%

  Average price £510
  Select February

• MarMarch2026

  £350

  Average monthly temperature & precipitation

  Temperature 21°C

  Precipitation 45%

  Average price £350
  Select March

• AprApril2026

  £621

  Average monthly temperature & precipitation

  Temperature 26°C

  Precipitation 43%

  Average price £621
  Select April

• MayMay2026

  £491

  Average monthly temperature & precipitation

  Temperature 26°C

  Precipitation 58%

  Average price £491
  Select May

• JunJune2026

  £626

  Average monthly temperature & precipitation

  Temperature 27°C

  Precipitation 60%

  Average price £626
  Select June

• JulJuly2026

  Warmest

  £571

  Average monthly temperature & precipitation

  Temperature 28°C

  Precipitation 67%

  Average price £571
  Select July

• AugAugust2026

  Warmest

  £495

  Average monthly temperature & precipitation

  Temperature 28°C

  Precipitation 70%

  Average price £495
  Select August

• SepSeptember2026

  Warmest

  £660

  Average monthly temperature & precipitation

  Temperature 28°C

  Precipitation 73%

  Average price £660
  Select September

Average monthly temperature & precipitation