American’s Seattle – London Service Is Open For Bookings

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Back in February, when most of us still had no idea that we were just a few weeks away from seeing the travel world start to implode, American Airlines and Alaska Airlines announced that they were going back to being the best of friends. The announcement included news that Alaska Airlines plans to join the oneworld alliance and that, amongst other things, American Airlines would start up service between Seattle and London.

American Airlines will be starting service between Seattle and London from the end of March 2021 and the plan was to have the service bookable from early May of this year. The crisis that unfolded since the original route announcement saw American Airlines delay the opening of reservations for its newest route but, following a recent schedule update, tickets are now on sale.

From 27 March 2021 American Airlines plans to offer a daily service between Seattle and London on the following schedule:

AA156 SEA 18:40 – 12:10+1 day LHR
AA155 LHR 13:50 – 15:50 SEA

The route will be operated by an American Airlines Boeing 777-200 which offers the following seating options:

  • 37 Business Class seats
  • 24 Premium Economy seats
  • 66 Main Cabin Extra seats
  • 146 Regular Economy Class seats

The service will run alongside the twice-daily service that British Airways offers using a Boeing 777 and it’s brand Boeing 787-10 aircraft which comes complete with the airline’s new Business Class Club suite.

For some reason, American Airlines doesn’t appear to be selling Basic Economy fares on its own flights this route (at the time of writing), but with American’s regular Economy Class faces costing pretty much the same as Basic Economy fares on British Airways, this shouldn’t be an issue right now.

Bottom Line

With American Airlines partnering with Alsaka, scheduling more international services out of Seattle, and with British Airways now offering its best Business Class product out of Seattle, the attack on Delta’s dominance in the area is truly on…let’s hope the next step is a big fare war 🙂

Featured image courtesy of Jonathan Miske via Flickr


  1. It’s about time Delta gets taken down. No need to be held captive to their stranglehold on fares

  2. AA announced recently their international capacity would be down 25% summer, 2021 vs. 2019. However, they also said London would be 100% of 2019. Not only is SEA now bookable. A whopping 23 daily flights from the US to LHR in 2021 are bookable including the new route from BOS. This is more than 100% of 2019 and includes JFK(4), BOS(1), ORD(4), PHL(2), CLT(2), MIA(1), RDU(1), DFW(4(, PHX(1), LAX(2) and SEA(1). All flights are 777’s. This is a huge amount of capacity! Let’s see if it happens!

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