Lithuania rarely tops the list of American business travelers' destinations, which is precisely why the routing puzzle from Indianapolis intrigues me every time I plan it. There's no nonstop option — that ~9.5 hour flight time quoted is really the long-haul transatlantic segment alone, once you've connected through a major East Coast or European hub. Booking business class from Indianapolis to Vilnius means choosing among Delta, American, or United, each funneling you through their respective gateways: Delta via JFK or Amsterdam-adjacent partners, American via London Heathrow through British Airways codeshares, or United via its Star Alliance partners into Frankfurt or Munich. Delta's Delta One suites, with their sliding privacy doors on A330neo and A350 aircraft, are the most consistent hard-product win on the transatlantic leg, and I'd steer toward routings that put you on that metal rather than a regional partner's older cabin.
My personal preference after flying this corridor repeatedly is connecting through Chicago O'Hare rather than fighting Indianapolis's limited morning departure bank — you gain flexibility on rebooking and better lounge access if United disrupts your onward Star Alliance connection. If American's your carrier, routing through Heathrow gives you a shot at British Airways' Club Suite on the transatlantic hop, a meaningfully better seat than their older Club World cabin still flying some routes. One insider tip: build in a minimum 2-hour connection in Frankfurt or Munich if flying United's partners, since Vilnius-bound flights often depart from remote gates requiring a bus transfer, and tight connections here are where itineraries unravel.
Late spring through early autumn — May through September — brings the most reliable award and premium cash availability into Vilnius, coinciding with Baltic high season and better weather for the return drive through Trakai or up toward Riga. Award space on Delta One in particular tightens fast once Lithuanian diaspora travel picks up around midsummer. Given how thin and volatile premium inventory is on this route, setting up fare alerts rather than checking manually is genuinely the smarter play here.