Hello. We're flying from Seattle to Edinburgh in September and spending 3 days there before renting a car and driving to the Highlands where we will visit friends. I'm driving myself crazy researching which airline is best to fly from Seattle to Edinburgh: Delta, British Airways, KLM, Virgin Atlantic, or Air France. British Airways has an amazing deal on First Class tickets right now via LHR. KLM goes through AMS and Air France through CDG. We haven't flown to Europe in 28 years and will be treating ourselves to First Class to celebrate my 60th. I need to be able to sleep and be comfortable on a flight due to chronic illness.
Thank you! Melody
(UPDATE: 3/14/18. We booked First Class on British Airways from Seattle to Edinburgh for $6200 per passenger. The other airlines had longer layovers in Edinburgh or Heathrow. I was looking for true First Class and not Business lie-flat; although that would be a good backup as mentioned by one commentator. In fact, Business was all that was offered on several airlines. Thank you everyone for the input. What a friendly bunch of travelers on this forum.)