Your Ultimate Guide to Alaska Airlines’ New Seattle to London Nonstop Flights on the 787 Dreamliner for Global Travelers

Published on December 10, 2025

Alaska Airlines has opened bookings for a brand-new nonstop route between Seattle–Tacoma (SEA) and London Heathrow (LHR). Starting May 21, 2026, the airline will fly daily on Boeing 787-9 Dreamliner jets. This new service gives travellers a direct option from the U.S. Pacific Northwest to London — without long layovers or complicated connections.

What the new route offers

For travelers seeking convenience, this nonstop link is a welcome addition. The Boeing 787-9 Dreamliner is built for long-haul comfort. Passengers can expect modern cabins and amenities designed for overnight comfort on transatlantic flights. The aircraft is configured to offer everything from standard seating to business class suites with more space and comfort.

Flight times are scheduled every day, offering flexibility whether you travel for leisure or business. Early promotions have shown competitive fare prices on certain bookings, making this a potentially economical way to reach Europe for those flying from or through Seattle.

Booking smart for your trip

If you plan to travel on this route, booking early is a smart move. Seats in premium cabins — especially those with lie-flat beds — tend to go fast. For travellers hoping to land in London refreshed and ready for their agenda, consider locking in business-class seats as soon as tickets become available. Even standard economy tickets deserve early booking for better seat selection and lower prices.

Make sure you verify the schedule for your intended travel dates, as availability may vary seasonally. Also consider purchasing flexible tickets if your plans might shift — this route opens up a new transatlantic option, and demand could fluctuate as travelers book ahead.

Entry to the UK — what global tourists must know

Travelers planning to visit the United Kingdom should check entry requirements carefully. Many visitors need to apply for an Electronic Travel Authorisation (ETA) before departure, even if they are allowed entry under short-stay rules. This is especially important if you are visa-exempt but not automatically cleared for unrestricted entry.

Additionally, ensure your passport is valid for the duration of your stay and meets any additional validity requirements imposed by UK authorities for foreign visitors. These rules can change, so always confirm the latest requirements before purchasing tickets or planning your stay.

Preparing for departure from Seattle (SEA)

On the departure end, arriving at Seattle–Tacoma with extra time ahead of an international flight is wise. International check-in counters, passport control, and baggage procedures can take more time than domestic departures. During peak travel seasons, airports can become crowded, so give yourself plenty of buffer time.

For carry-on luggage, remember to comply with standard security rules: liquids must be in containers of 100 ml (or 3.4 oz) or less, placed inside a clear plastic bag. Items such as medicines or essential documents should remain in your carry-on rather than checked baggage. This helps avoid delays at security inspections.

Arrival in London — after landing

Once you land at Heathrow, follow airport signs to passport control and baggage claim. London offers excellent onward transport links via rail, tube (subway), and bus systems. If you plan to continue your journey elsewhere in the UK or Europe, factor in some extra time for customs and possible transit. For travelers new to London, arranging transport from Heathrow to your final destination in advance can smooth your arrival.

Why this route is significant for travellers

For people travelling from western U.S. states or countries with easy access to Seattle, this nonstop route simplifies long-distance travel considerably. Instead of connecting through multiple cities, you can now enjoy a single direct crossing. The convenience is especially attractive to tourists, business travellers, and transit-free holiday planners.

For example, if you live on the U.S. West Coast, or you are combining a Pacific-Northwest trip with a European vacation, this route saves both time and hassle. It might also offer competitive pricing compared with older itineraries involving two or more flights and multiple border crossings.

Travel-friendly tips for a smooth journey

• Book early: Premium seats go quickly on new routes. For optimal comfort, secure your business-class ticket in advance.
• Check entry requirements: Apply for the UK ETA ahead of time if required. Ensure passport validity.
• Arrive early at SEA: International flights need extra check-in time and secure baggage processing.
• Pack smart: Follow carry-on liquids rules; keep essentials with you.
• Plan transport from Heathrow: Pre-book your onward trip, whether by train, tube, or bus — and allow time for customs.

Final thoughts for global travelers

The new nonstop link from Seattle to London offers a smoother, more direct path to one of Europe’s most vibrant capitals. For tourists, business visitors, or travelers combining trips across continents, this announcement is more than just a new route — it’s a gateway to seamless travel.

If you’re planning a trip to London or beyond, this new service deserves a close look. With careful planning around bookings, documentation, and timing, your journey could be easier and more enjoyable than ever before.