Riga rarely tops the list of European business class trophy routes, which is precisely why frequent flyers who know better keep quietly booking it. There's no nonstop option — no carrier flies SFO to RIX direct — so business class from San Francisco to Riga inevitably routes through a European or transatlantic hub, and the connection you choose defines the entire journey. Lufthansa via Frankfurt or Munich is the strongest play for hard product: their Boeing 777 and A340 business seats offer proper lie-flat comfort on the long transatlantic leg, and depending on aircraft rotation, you may catch early Allegris cabins on select frankfurt-bound configurations. Delta, partnered through its transatlantic joint venture, routes through Amsterdam or Paris with A330neo or A350 business suites featuring direct aisle access — a meaningful upgrade over older Delta One configurations, so it's worth checking equipment before booking. airBaltic, the Latvian flag carrier, operates the final short hop into Riga on regional jets without a true long-haul business cabin, so treat BT as your connector, not your headline carrier.
My strong preference after flying this corridor repeatedly: connect through Frankfurt rather than Amsterdam in winter months, since FRA's transfer times and lounge access (particularly the Lufthansa First Class Lounge, bookable by some business passengers on specific fare classes) are more forgiving during snow delays that plague Riga's smaller airport in January and February. An insider tip few mention — Riga Airport's arrivals process is fast enough that a 60-minute connection from a Baltic regional flight is genuinely workable, unlike most European hubs.
Late spring through early autumn — May through September — consistently brings the best business class fares on this corridor, as Baltic tourism demand pushes airlines to add capacity and compete harder on premium pricing. Given the routing complexity and multiple carrier options, setting up fare alerts is the smartest way to catch Lufthansa or Delta business class pricing dips before they disappear.