On the airline side, United's Polaris product is the most familiar choice for US flyers, with a proper lie-flat pod in 1-2-1 configuration and Polaris lounge access at Newark before you even board — useful given the early evening departure banks common on this route. Lufthansa's newer Allegris suites, flying on select A350s, are the most private option here, closer to a mini first-class experience, though availability at consolidator pricing can be tighter since it's a newer cabin. Turkish Airlines is worth serious consideration if your routing allows an Istanbul connection — their DO&CO catering is consistently one of the better dining experiences in business class, and their lounge is an attraction in itself. TAP Air Portugal, connecting through Lisbon, tends to offer some of the most competitive fares on this route while still delivering a solid 1-2-1 lie-flat seat, and it pairs naturally with a Biarritz trip given the short hop from Lisbon into southwest France. SAS and Austrian round out the field with clean Scandinavian and Viennese cabin styles respectively — Austrian's 2-2-2 layout is the one exception to lie-flat 1-2-1 seating on this route, so it's worth confirming aircraft type if a window or aisle without a seatmate matters to you.