Cross the Atlantic in Style: Seattle-London Flights Launching May 2026 with Enhanced Comfort

Published on December 9, 2025

The transatlantic travel landscape is evolving. Alaska Airlines is dramatically expanding its international network. The carrier is positioning Seattle-Tacoma International Airport (SEA) as a significant global hub. This expansion is excellent news for global travelers.

A New Daily Link to the UK Capital

Alaska Airlines has confirmed new daily, year-round service. The non-stop flights will connect Seattle (SEA) with London Heathrow (LHR). This exciting new route launches on May 21, 2026.

The flight, AS100, will depart Seattle late in the evening. It arrives in London the following afternoon. Flight AS101 returns from London in the late afternoon. It touches down in Seattle in the early evening. The eastbound journey is scheduled for about nine hours and twenty-five minutes. The westbound flight is blocked at nine hours and forty-five minutes.

Experience the Boeing 787 Dreamliner

Travelers will fly aboard the modern Boeing 787-9 aircraft. This twin-aisle jet offers an upgraded international travel experience. The plane will feature a new global livery design.

The Dreamliner offers 34 business class seats. These are expected to be lie-flat suites with privacy doors. There are also 266 economy class seats available. For ultimate comfort, Business Class guests can expect lie-flat seats and multi-course dining. The airline is also planning for ultra-fast Starlink Wi-Fi.

Booking Your London Adventure

Tickets are now available for purchase. Travelers can secure roundtrip economy fares starting from $699. This makes planning a European summer trip simple.

The airline’s Atmos Rewards members can also earn significant points. Later in 2026, the loyalty program will offer more flexible earning options. The new long-haul routes are designed to reward global travelers generously.

Seattle’s Growing Global Hub

The launch is part of a broader corporate strategy. Alaska Air Group recently acquired Hawaiian Airlines. This move accelerates its transformation into a global carrier. The company is actively working to launch a dozen long-haul routes by 2030.

Seattle-Tacoma is solidifying its role as a global gateway. It already offers flights to Tokyo and Seoul. New Europe destinations like Rome and Keflavik are also on sale for 2026. The airport itself has undergone significant modernization.

The new International Arrivals Facility (IAF) is a highlight. It features a stunning, record-setting aerial walkway. This allows arriving passengers panoramic views of Mount Rainier. This new facility significantly enhances the passenger experience.

Enhanced Connectivity for Global Tourists

The Seattle to London route enhances connectivity worldwide. Alaska Airlines is a member of the oneworld alliance. This partnership is a huge benefit for global tourists.

This alliance ensures seamless one-stop connections. Travelers from the Pacific Northwest can easily reach London. From Heathrow, travelers gain access to hundreds of destinations across the globe. This expanded network simplifies complicated international itineraries.

While the London market is competitive, this new route meets demand. Approximately 400 people travel between the two cities daily. This shows a significant appetite for direct service. Alaska Airlines’ strong base in the Pacific Northwest will help fill seats. The airline has also confirmed it is leasing an airport slot pair from partner American Airlines. This strategic move makes the new London service possible.

🇬🇧 Travel Guide: Arriving in London

London Heathrow (LHR) is one of the world’s busiest airports. Travelers should be ready for its fast pace.

• Public Transport is Best: Avoid renting a car in London. The UK capital has an extensive and efficient public transport system. The Tube (Underground) is the fastest way into the city center. Contactless payment cards are accepted at all gates.
• Security and Safety: Tourists should be mindful of their surroundings, particularly in crowded areas. The U.S. State Department advises using only licensed black taxis or pre-ordered car services. It is best to avoid leaving bags unattended in public places. The UK government strongly encourages tourists to secure travel insurance. This coverage should include necessary health benefits.
• Must-See Attractions: London is a treasure trove of history and culture. Must-see sights include the Tower of London, Buckingham Palace, and Westminster Abbey. The National Gallery and the British Museum offer world-class collections. Consider booking popular attractions like the London Eye in advance.

This new route is an open invitation for global tourists. It offers a fresh, comfortable way to start a grand European tour. Book your flight and prepare to discover the wonders of London.