One Day in Reykjavík: 3 Icelandair Stopover Itineraries

Every Icelandair flight between North America and Europe connects through Keflavík, and the airline has spent years reminding passengers that they don't have to stay in the terminal. The Icelandair Stopover lets you break the trip in Iceland for up to seven nights at no extra airfare — you just toggle it on when booking and pay for your own hotel. Most people who use it add one night, and that is where the question starts: what can you actually do with roughly 24 hours in Iceland?

More than you'd think. Eastbound flights from North America typically land between 6 and 7 a.m., and the European connections leave the following morning, so a one-night stopover gives you a full day plus an evening. Below are three itineraries built around that window, each with a different trade-off: stay car-free in the city, drive the classic Golden Circle, or never stray far from the airport on the Reykjanes Peninsula.

Before you land: logistics that save hours. Keflavík International Airport sits 50 km from downtown Reykjavík. Flybus, the official airport transfer, meets every arriving flight and takes about 45 minutes to the BSÍ bus terminal, with hotel drop-off available. For the Golden Circle or Reykjanes plans you'll want a rental car, which you pick up right at KEF Airport. Book a hotel that allows early bag drop (most in the city center do), pack a swimsuit in your carry-on, and check SafeTravel and the Icelandic Road Administration the night before — weather and road conditions change fast, and the Reykjanes Peninsula has had repeated volcanic eruptions since 2021. None of them has disrupted flights, but they do close roads and sites near Grindavík.

Itinerary 1: Reykjavík on foot (no car needed). This is the right choice if you're jet-lagged, traveling in winter, or simply want to see the capital properly. Take Flybus into town, drop your bags, and go swimming. That sounds strange at 9 a.m., but a morning soak is how Reykjavík starts its day, and it's the best cure for a red-eye. Skip the tourist spas and walk to Sundhöll Reykjavíkur on Barónsstígur, the city's oldest public pool. It opened in 1937, was designed by Guðjón Samúelsson — the same architect behind the church up the hill — and a 2017 extension added outdoor hot tubs, a cold plunge, and a sun terrace. It's where locals swim laps before work, and entry costs a fraction of a lagoon ticket.

From the pool it's a five-minute walk to Hallgrímskirkja, whose tower elevator gives you the view of colorful rooftops that ends up on every postcard. Walk down rainbow-painted Skólavörðustígur toward Laugavegur, the main shopping street, and eat lunch wherever the queue looks local — our self-guided Reykjavík food tour covers the bakeries, the famous hot dog stand, and the harbor soup shacks in detail. In the afternoon, follow the waterfront path past Harpa, the glass-honeycomb concert hall, to the Sun Voyager sculpture, with Mount Esja across the bay. History buffs can duck into the National Museum of Iceland for 1,200 years of the country in two floors.

End the day where locals go for sunset rather than where the tour buses stop. Grótta, on the tip of the Seltjarnarnes peninsula about an hour's walk (or a short cab ride) west of downtown, is a tiny island with an 1897 lighthouse that you can reach across a causeway at low tide. It's a nature reserve closed from May 1 to July 15 for nesting Arctic terns, but the shoreline stays open, and on the rocks nearby sits Kvika, a small geothermal foot bath carved into the stone where you can soak your feet and watch the sun drop behind the sea. On clear winter nights it's also one of the darkest northern-lights spots within city limits. If you'd rather have a full soak, Sky Lagoon in Kópavogur is 15 minutes from downtown and open late, with an infinity edge facing the North Atlantic.

Itinerary 2: The Golden Circle by rental car. If you only leave the city once, this is the loop to do: about 300 km from the airport and back to Reykjavík, with three headline sights and very easy driving outside winter. Pick up the car at KEF and head straight for Þingvellir National Park (about 75 minutes). Walk down the Almannagjá gorge, where the North American and Eurasian plates are visibly pulling apart, continue to the Öxarárfoss waterfall, and stand at the Law Rock, where Iceland's parliament met for the first time in 930. Arriving by 9 a.m. means you'll have it largely to yourself.

From there, drive east past Laugarvatn to Efstidalur II, a family dairy farm that has been in the same valley since the 1750s. Its ice cream bar looks through a window straight into the cow barn, and the restaurant serves farm-to-table meals — a far better stop than the cafeterias at the big sights. Fifteen minutes on is Geysir, where the original geyser rarely erupts but neighboring Strokkur blows every five to ten minutes, and ten minutes beyond that is Gullfoss, the two-tiered waterfall dropping into a canyon of the Hvítá river.

On the way back, swap the crowded tourist favorites for one of two alternatives. Friðheimar in Reykholt serves bottomless tomato soup and fresh bread inside a working greenhouse — reserve ahead, because it fills with tour groups at midday. Then soak at the Secret Lagoon in Flúðir, a natural hot spring pool from 1891 with a little geyser bubbling at its edge, or at Laugarvatn Fontana, whose lakeside steam baths sit on top of a hot spring and whose bakery pulls rye bread baked in the ground. Drive the last hour into Reykjavík for dinner, sleep, and catch Flybus or return the car at KEF in the morning. In winter, with only four or five hours of daylight, drop the soak and start the loop at first light.

Itinerary 3: Reykjanes — stay close to the airport. This plan suits travelers who want wild scenery without long drives, or who have a tight connection the next morning. Book a hotel near Keflavík and spend the day on the Reykjanes Peninsula, a UNESCO Global Geopark of lava fields and steaming ground. Start at the Blue Lagoon, just 20 minutes from the terminal — go at opening time and pre-book, since it's timed-entry only. Then drive southwest to the Bridge Between Continents, a footbridge spanning a fissure between the two tectonic plates, and on to Gunnuhver, the country's largest mud pool, roaring with steam. The Reykjanes Lighthouse stands on a hill nearby, looking over the wild cliffs at the end of the peninsula.

In the afternoon, check SafeTravel for closures around Grindavík, then take Road 42 across the peninsula to Kleifarvatn, a dark, eerie lake ringed by black lava hills. Just south is the one stop on this route that most visitors skip: Seltún, in the Krýsuvík geothermal area. A boardwalk winds up a hillside of bubbling mud pots and hissing fumaroles, streaked orange, yellow, and green with minerals. It's every bit as colorful as the famous geothermal fields in the north, with a fraction of the visitors and only about 40 minutes from Reykjavík. Finish with dinner in the old harbor town of Hafnarfjörður or back in the capital, then it's a short drive to the airport in the morning.

Which one to pick? First visit in summer: the Golden Circle. Winter or no car: Reykjavík on foot, ending with a lagoon. Early connection or a deep love of volcanoes: Reykjanes. And if one day leaves you wanting more, that's the point of the stopover — next time, add three nights and drive the South Coast.