How to find the cheapest flight from San Francisco (SFO) to Donegal (CFN)
All the information you need to plan the best SFO to CFN flight in 2021: compare San Francisco to Donegal flight prices with the expected peak season, weather and rainfall in Donegal.
Related info for your journey
Useful info, stats and facts about <span class="emphasized">San Francisco</span> to <span class="emphasized">Donegal</span> flights.
From San Francisco to Donegal
Are flight prices decreasing from San Francisco to Donegal due to COVID-19 (coronavirus)?
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 San Francisco and Donegal 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.
Does it rain more in San Francisco or Donegal?
Expected rainfall in San Francisco is more than in Donegal. You can expect this to be the case over the next 10 days.
Is San Francisco weather warmer or cooler than Donegal?
Expect the weather to be around 77 °F on average in September. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in Donegal is generally colder than in San Francisco.