Green Coast or Wild Glens
Ireland's west coast is a patchwork of stone walls, small fields and Atlantic headlands. Around Killarney, lakes and oak woods sit below the mountains. The Dingle Peninsula has beehive huts, Irish-speaking villages and views to the Blasket Islands. Connemara adds bog, mountain and coastal villages like Roundstone, while the Burren is a strange limestone plateau above the sea. The scenery is lovely rather than overwhelming, with a town or village never far away.
The Highlands feel vast. Glencoe is a steep, brooding valley where mountains rise straight from the road. Lochs like Ness, Shiel and Linnhe fill long glacial trenches. The North Coast 500 leads to wild beaches with almost nobody on them. Deer cross the road, waterfalls spill from moorland and ruined castles appear on headlands. If you want to feel tucked in, choose Ireland. If you want to feel small in a big landscape, choose the Highlands.
Getting There From the US
Ireland is the easier arrival. Dublin has nonstops from more than a dozen US cities on Aer Lingus, Delta, United, American and JetBlue, about six to seven hours from the East Coast. Shannon, near the west coast, has nonstops from Boston and New York, plus seasonal Newark and Chicago flights. Both airports offer US preclearance on the way home, so you land as a domestic arrival.
The Highlands usually start in Edinburgh (EDI) or Glasgow (GLA), which have nonstops from several US cities, many of them seasonal. From there it is three to four hours by road to Inverness, or about two and a half hours from Glasgow to Glencoe. Inverness Airport (INV) has domestic flights from London. For something more romantic, the Caledonian Sleeper runs overnight from London Euston to Inverness and Fort William, so you wake up to mountains.
Best Months to Go
May, June and September are the sweet spot in both. Long days stretch light past 10 p.m. in late June, roads are quieter than in July and August and the landscape is at its greenest. In Ireland, the Burren's wildflowers peak in late May and rhododendrons bloom in Kerry and Connemara. In the Highlands, May and June bring long light with fewer midges than later summer.
July and August are the warmest and busiest months. Ireland's daytime highs typically reach the mid 60s Fahrenheit, while Highland summers are similar or a touch cooler. August brings Highland Games and heather on the hills, plus the most midges.
September is a favorite in Scotland, as the hills turn russet and stags start roaring in the glens. The Braemar Gathering takes place early in the month. In both places, October to April is quiet, short-dayed and wet, though castle hotels make it cozy.
Castle Nights and Country Inns
Ireland has one of the deepest benches of castle hotels anywhere. Ashford Castle in Cong has falconry and lake cruises. Dromoland Castle near Shannon is an easy first or last night. Ballynahinch Castle in Connemara sits on a salmon river below the Twelve Bens. Adare Manor in Limerick is among the most expensive stays in the country. In Kerry, the Europe Hotel & Resort overlooks Killarney's lakes and the Park Hotel Kenmare and Sheen Falls Lodge are long-standing romantic choices.
The Highlands have fewer big names but some special ones. Inverlochy Castle near Fort William is a Victorian castle hotel with formal dining and views toward Ben Nevis. Glencoe House offers suites with mountain views. In Braemar, The Fife Arms mixes Highland tradition with an extraordinary art collection and Rocpool Reserve in Inverness is a stylish boutique base for Loch Ness.
Budget Expectations
Both are moderately expensive in summer and costs come out fairly similar. In Ireland, a good B&B or guesthouse runs roughly 150 to 250 euros a night, boutique or country house hotels roughly 250 to 500 euros and the famous castles often 600 euros to well over 1,000 a night in summer. Dinner for two with wine is about 100 to 180 euros. Ten days for two runs roughly $6,000 to $10,000 before flights.
In the Highlands, Inverlochy Castle starts at roughly $850 a night and other special hotels are similar. Country inns and B&Bs are more affordable, though they fill fast in summer in small villages. Tasting menus at country hotels and distillery tours add up. All figures are approximate.
In both places, fuel and car rental are significant costs, since a car is close to essential.
What to Do Together
In Ireland, mix walks, drives and pub nights. Visit the Cliffs of Moher early or late in the day, then drive the Burren coast road to Doolin for music. Spend a day at Kylemore Abbey and on the Sky Road near Clifden, or climb Diamond Hill. Drive Slea Head around the Dingle Peninsula, take a jaunting car through the Gap of Dunloe near Killarney and eat oysters a few hundred yards from where they were farmed.
In the Highlands, the days are about scenery and history. Drive through Glencoe on a misty morning and walk into the Lost Valley. Ride the Jacobite steam train from Fort William to Mallaig over the Glenfinnan Viaduct. Visit Urquhart Castle on Loch Ness, Culloden battlefield and the Clava Cairns. Tour a Speyside distillery with a designated driver and photograph Eilean Donan Castle on its island.
Driving, Weather and Midges
Both trips need a car and both put Americans on the left side of the road. Ireland's narrow lanes in Kerry and Connemara are often one car wide between stone walls. The Highlands have many single-track roads with passing places. Pull in to let others pass and never stop in passing places for photos. Rent the smallest automatic that fits your luggage in either.
Rain is possible every day of the year in both. Pack a proper waterproof shell and layers.
The Highlands have one extra challenge: midges. These tiny biting insects are worst from June to August on still evenings near water. Pack repellent and choose breezy spots. Ireland has far fewer problems with them. On the plus side, Highland roads are so empty that a two-hour drive feels like a scenic tour, while Ireland's coast routes can be busy with tour buses in July and August.
Linking Ireland and Scotland
The two are close enough to combine in about two weeks. Flights from Dublin to Edinburgh, Glasgow or Inverness are short and frequent. Car ferries also cross from Belfast to Cairnryan in southwest Scotland, though most couples find flying simpler.
A fourteen-night route could start with a week on Ireland's west coast, landing at Shannon and moving through Clare, Connemara and Kerry. Then fly from Dublin to Inverness or Edinburgh for six or seven nights in the Highlands, with a night on Skye if you can. Fly home from Edinburgh.
With ten days or fewer, choose one. Ireland's west coast fills a week easily. The Highlands need at least four nights, ideally a week, since distances are long and the best experiences happen at a slow pace. Combine the Highlands with a couple of nights in Edinburgh rather than squeezing in another country.
