We're tentatively thinking about a trip to Ireland this summer coincident with other relatives' visit to their mother in Sligo in the northwest of Ireland. We'd probably want to fly to Dublin and stay overnight (or not, depending on Dublin arrival time), and travel by rail to Sligo which appears to be approximately a 3-hour journey, for a three-night, two-day stay, then back to Dublin for either four or five full days there, and then on to London for perhaps eight nights and seven full days.
Given that we've enjoyed four previous trips to and lodging in London, we fairly likely will rent a flat there from the firm from which we rented on the previous three of those four visits. We hope to take an "inside the Circle one-hour tour" of Stonehenge and we understand and hope at least one of these tours will depart from London as a day trip (we'd already earlier spent a nice few days in Bath). Portsmouth and some currently unplanned destination might be added as day trips from London as well.
Now the questions: Has anyone reading this forum ever been to Sligo? Other than museums, etc, dedicated to the Yeats brothers, are there any other don't-miss Sligo sights?
Because our outbound flight would be from our home base, Seattle, and our return from London, we might well use BA for the trip. I'm not sure that Air Lingus (I've not checked to see if AL even flies from Seattle to Ireland), but, because we'll be returning from London, I'm not particularly attracted to "backtracking" to Dublin for our home-bound flight. BA is probably much more pricey than almost any other airline (well, maybe Delta is in the same pricey category). My question relates to the Dublin-London leg: It's about 40% less expensive to "ferry" by sea from Dublin to Wales on the Big Island (for you frequent Hawaiin travelers), thence by rail to London, making a fairly long day, than it would be to simply add a Dublin-London leg to the BA flight set. Recommendations, anyone?