Stockholm Arlanda Airport

• 1. Introduction

  ›

  Stockholm Arlanda Airport sits 37 kilometres north of the Swedish capital, and it is one of those places that tells you more about a country than almost anywhere else. Nearly 27 million passengers moved through it in 2017 alone. That figure makes it the largest airport in Sweden and the third-largest in all of the Nordic countries. But the numbers are only part of the story. Arlanda has been closed due to snow exactly zero times in its operational history. It has hosted a U.S. president, a Russian head of government, and a Japanese emperor. It runs a heating and cooling system fed by an underground aquifer. It once served as a setting for a wedding in its control tower. How did an airport built on flat ground north of Stockholm become the main gateway to and from one of the world's most connected regions? And what has kept it running through recessions, pandemics, and an ice storm that once swallowed two aircraft engines whole?

• 2. A Terminal for Every Era

  ›

  Terminal 4 was the first of Arlanda's current passenger buildings to open, inaugurated in 1983 by King Carl XVI Gustaf and Queen Silvia. At that point it was simply called Inrikes 1, meaning Domestic 1, and it handled the domestic traffic that Linjeflyg had been operating from Stockholm Bromma Airport. Terminal 5 had actually come earlier, opening as Arlanda International in 1976, also under King Carl XVI Gustaf, and it carried both scheduled and charter international flights from the start. The two buildings anchored opposite ends of what would become a constantly reshuffled system of terminals, each renaming tracking a shift in the airport's priorities. Terminal 2 was inaugurated on the 12th of December 1990, by Prince Bertil, and at that opening it had no security checks at all. Passengers with only hand luggage could arrive just ten minutes before departure. The design was built around double walk bridges sized for MD-80 aircraft, and the whole philosophy was speed and minimal walking. Within two years the model was already under strain. The 1990-1994 Swedish financial crisis pushed SAS back into Terminal 4 just as that terminal's expansion into Terminal 2 was supposed to ease congestion. Inrikes 1 was renamed Terminal 4 in 1992, the same year Terminal 2 began absorbing other airlines including Transwede Airways. A terminal number that started as a geographic convenience became an administrative record of the crises the airport had lived through.

• 3. The Third Runway

  ›

  Construction on Arlanda's third runway ran from 1998 to 2002, but a recession that year pushed the opening back to 2003. Residents living under the new flight path in Upplands Väsby raised protests at the time. The runway itself is 2,500 metres long, the same length as Runway 2, and both fall short of Runway 1's 3,301 metres. Only Runway 1 can handle take-offs and landings by the heaviest aircraft in current service. The third runway opened alongside a new air traffic control tower and a major expansion of Terminal 5, with those expanded facilities inaugurated on the 17th of December 2003, by Infrastructure Minister Ulrika Messing. Because the third runway sits at a distance from the terminals, a deicing pad was built close to it specifically to reduce the wait between deicing and take-off in winter conditions. Environmental considerations placed a limit on its day-to-day use. The runway now operates only during peak hours, a policy decision made to reduce the airport's noise footprint. In September 2010, Arlanda received the first Airbus A380 superjumbo to land there, and by 2014 Swedavia was already drawing up plans for a new pier to accommodate the A380 and the Boeing 747-8. The Environmental Court of Appeals approved those plans in December 2014.

• 4. The Pandemic and the Tunnel

  ›

  April 2020 recorded passenger figures 97.7 percent lower than April 2019. SAS cut its Arlanda schedule to four domestic departures and four domestic arrivals after the 6th of April 2020, plus a limited number of international services. Norwegian cancelled everything from Arlanda except flights to Oslo. Terminals 2, 3, and 4 closed entirely. For the period stretching from March 2020 to October 2021, Terminal 5 alone handled every passenger who moved through the airport. When travel recovered in spring 2022, the airport found itself without enough staff to run security screening. Most of its security workforce had been let go during the recession, and the process of finding, vetting, and training replacements takes considerable time. Terminal 4 could not reopen because any transfer between it and Terminal 5 required passing through security, and that checkpoint was already overwhelmed. Swedavia's solution was to build a pedestrian tunnel beneath Sky City, connecting the two terminals on the airside so that passengers could move between them without re-entering the security zone. The tunnel opened alongside Terminal 4 at the end of June 2022. In October 2025, Swedavia went further, closing all check-in, baggage handling, and security facilities in Terminal 4 and moving those functions to Terminal 5. As of 2026, Terminal 4 carries no check-in or customs infrastructure of its own.

• 5. Never Closes for Snow

  ›

  Arlanda's policy of never closing due to snowfall is not simply a motto. It is an operational commitment backed by a workforce that swells to 100 people during the colder months, including around 65 seasonally hired snow removal staff. The airport has 250,000 square metres of surface to clear while aircraft continue taking off and landing. Sweeping teams follow pre-planned routes timed to clear each section every 35 to 45 minutes, directed by radio from the air traffic control tower. After each runway is cleared, a friction vehicle measures the surface grip. That friction value is then published, and each pilot makes an individual decision about whether the reading is sufficient for a landing. The airport's particular exposure comes from lake-effect snow, where cold air arriving from the northeast passes over open water in the Baltic Sea before dumping heavy snow on the airport grounds. Three runways help. When one runway is being cleared, the other two can remain open. Arlanda delivers jet fuel by a route that has nothing to do with trucks through the city: since around 2006, fuel has arrived by boat to Gävle, then by train to Brista near Märsta, and then through a pipeline to the airport. Previously it came by ship to Värtahamnen in Stockholm and then by road through the city.

• 6. SAS Flight 751

  ›

  On the 27th of December 1991, Scandinavian Airlines Flight 751 departed Stockholm Arlanda Airport bound for Warsaw with a stopover planned at Copenhagen. The aircraft was a McDonnell Douglas MD-81 registered as OY-KHO, carrying 129 passengers and crew. Shortly after take-off, both engines failed. Clear ice had formed on the aircraft during the night, and when deicing was performed it was not properly removed. The ice broke off after take-off and was ingested into the engines. Every person on board survived. The aircraft was written off. That incident stands as one of the most serious accidents in the airport's recorded history, but it is also a reminder that the airport's climate places ice management at the centre of safe operations. The 1987 incident on a Transwede Caravelle headed for Alicante told a similar story: the aircraft hit the runway hard after take-off, apparently because of ice, the landing gear failed, and the aircraft slid off the runway and caught fire. None of the 27 passengers and crew was killed, and the wreck was later handed to the airport's fire and rescue service as a training aircraft. The airport's investment in deicing pads and winter operations reflects a consistent lesson drawn across decades of incidents.

• 7. Ground Below, Sky Above

  ›

  The Arlanda Line opened in 1999 and runs through a tunnel beneath the airport itself, with three stations: Arlanda South, Arlanda North, and Arlanda Central. The line is privately operated by A-Train AB, the owner of the Arlanda Express, which runs non-stop between Stockholm Central Station and the two airport stations. Arlanda South serves Terminals 2, 3, and 4; Arlanda North serves Terminal 5. The Stockholm commuter rail connects to Arlanda Central, with a travel time of approximately 38 minutes to Stockholm Central and 18 minutes to Uppsala Central. Because the Arlanda Line charges an exit fare on top of the standard SL fares, commuter rail tickets from Arlanda are more expensive than typical regional journeys. Long-distance trains from SJ and Mälartåg also call at Arlanda Central, connecting the airport to cities including Uppsala, Gävle, Sundsvall, Umeå, Östersund, Eskilstuna, and Linköping. The E4 motorway passes alongside the airport, linking it to central Stockholm, Uppsala, and routes north. Sky City, the retail and dining concourse situated landside between Terminals 4 and 5 above Arlanda Central Station, functions for non-travelling visitors as well as departing passengers. Future plans include Pier G by 2040, which is designed to lift the airport's capacity from around 25 million passengers annually in 2019 to 40 million.