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Heathrow's £49BN Third Runway Plan
ESTIMATED66% CONFIDENCEin 9.3 yearsA target, per the source[1]: consent is only aimed for "before 2030", after which "a third runway would then open by 2035".Heathrow Airport has set out a £49BN expansion plan, including a long-sought third runway and a new terminal complex, and has approved work on a planning application after decades of UK government indecision.£49B0.69Construction Begins on Frankfurt Airport's €4 Billion Terminal 3
CONFIRMED90% CONFIDENCE11.0 years agoFraport's[2] own Terminal 3 press kit states 'the groundbreaking ceremony for Terminal 3 took place on October 5, 2015.'Fraport broke ground on Terminal 3, a roughly €4 billion expansion of Frankfurt Airport that would add three passenger piers and a 69-meter control tower.0.68Portland International Airport Opens New Main Terminal
Portland International Airport, 7000 NE Airport Way, Portland, OR 97218, United States
DELAYED4 months late44% CONFIDENCE2.1 years agoHappened as dated, per the source[1]: "The opening was delayed from the originally scheduled spring opening by four months due to workplace safety issues in April."After a four-year, $2 billion rebuild, Portland International Airport opened its overhauled main terminal, built around a nine-acre mass-timber roof sourced entirely from within 300 miles of the airport.$2.000.67Frankfurt Airport Terminal 3 Opens
CONFIRMED91% CONFIDENCE153 days agoHappened as dated, per the source[1]: "the first travellers to arrive at Frankfurt's brand-new... Terminal 3", on April 23, 2026.Frankfurt Airport's new Terminal 3 opened after more than a decade of construction, giving Germany's biggest airport its first major expansion since the troubled Berlin Brandenburg saga.0.67Hong Kong Airport's Three-Runway System Reaches Full Operation
CONFIRMED89% CONFIDENCE1.8 years agoHappened as dated, per the source[1]: "all three runways will be operating under the system starting November 28."Hong Kong International Airport's HK$141.5BN Three-Runway System expansion reached full three-runway operation, capping an eight-year project to add capacity on reclaimed land.HK$141.5B0.67SFO's Terminal 3 West Expansion Opens
Terminal 3, San Francisco International Airport, San Francisco, CA 94128San Francisco International Airport
ESTIMATED50% CONFIDENCEin 343 daysThe builder's announcement says the expansion "is scheduled to open in the fall of 2027", a season rather than a day.[1]Turner broke ground on 5 September 2024 on the $2.6 billion modernization of SFO's Terminal 3: a 200,000-square-foot expansion, 650,000 square feet of renovation and a new six-story building holding airline lounges and operational offices. The eastern addition follows in 2029.0.67Changi Airport Breaks Ground on Terminal 5
CONFIRMED90% CONFIDENCE1.4 years agoThe Prime Minister's Office dates the speech to the groundbreaking ceremony 14 May 2025, and PM Wong opens by marking the ground being broken on T5 that day.[1]Prime Minister Lawrence Wong officiated the groundbreaking of Terminal 5 on the Changi East site, launching the airport's largest expansion. PM Wong said T5 will be as big in land area as all of Changi's current terminals combined and will expand the airport's capacity by more than 50 per cent, serving about 50 million more passengers a year.0.67Miami International Airport's New Concourse K Is Due to Open
ESTIMATED50% CONFIDENCEin 2.5 yearsThe airport's own project page says the concourse is "scheduled for completion by Spring 2029" - a season, not a fixed day, so the pin uses the start of that spring.[1]MIA is building a three-level Concourse K with six domestic gates, new baggage handling, a ground support equipment maintenance facility and airfield work, the first new concourse of its $9 billion modernisation programme. Construction broke ground in mid-2025.$600.6M0.66Shanghai East Railway Station Opens Next to Pudong Airport
ESTIMATED52% CONFIDENCEin 311 daysThe Shanghai[1][2] municipal government's own English news page (19 March 2025) says "the project is scheduled to be operational in July 2027, offering seamless connections to high-speed rail, urban railway, metro lines, buses and the airport" - a month rather than a day, so the pin takes the last day of July 2027 instead of the end of the year.Shanghai's second-largest station after Hongqiao is being built in the bonded area beside Pudong International Airport, its high-speed station building given 15 platforms and 30 tracks. Passengers will walk roughly 250 metres between the trains and the airport.0.66SEA Gateway Project Completes at Seattle-Tacoma's Main Terminal
CONFIRMED90% CONFIDENCE238 days agoThe Port of Seattle's 28 January 2026 release is headlined "SEA Airport and Alaska Airlines Celebrate Completion of SEA Gateway Project".[1]The rebuild of the north end of SEA's main terminal added the airport's first at-scale automated bag drops, a redesigned Checkpoint 6, a new Bridge Level check-in, upgraded baggage claim devices and eight major public art installations. The Port of Seattle and Alaska Airlines marked the finish of major construction, the first of a run of Upgrade SEA projects due to complete before the summer's international soccer tournament.$546M0.66Melbourne Airport Rail Link
Melbourne Airport, Victoria, Australia
DELAYED4 years late67% CONFIDENCEin 7.3 yearsDate has moved, per the source[1]: originally due by 2029, "that deadline is now looking a lot more like 2033"; Victoria’s own project page confirms the later date.A AU$12BN rail line to finally connect Melbourne Airport to the city, alongside a AU$4.5BN airport overhaul that adds a third runway and expands the international terminal.A$12B0.65Phoenix Sky Harbor Starts Building Its Third Terminal
ESTIMATED50% CONFIDENCEin 2.3 yearsThe airport's own schedule lists "Construction 2029 - 2033" with no start date, so the pin uses the start of 2029.[1]Sky Harbor's West Terminal, the airport's first new terminal since Terminal 4 opened in 1990, is scheduled to go into construction in 2029 and open in 2033, with the number of concourses and gates still to be decided. The airport puts the likely cost at around $4.5 billion, paid for with passenger facility charges, bonds and airport funding rather than tax dollars.0.65
