Flights from Cardiff to Port Ellen lean towards being more expensive in May. Prices are generally better when you fly from Cardiff to Port Ellen in December, with the cheapest ticket starting at £219.
At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Cardiff and Port Ellen for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Cardiff is roughly less than Port Ellen. You can assume this to be the case over the next 11 days.
You can imagine temperatures to be in the 20 °C range in July. The weather in Port Ellen is generally colder than Cardiff's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.