British Airways, Finnair, and United have round-trip flights from Seattle (SEA) to Basel, Switzerland (BSL) for $499-$512 with a connection. Flights October to March. Departures on Monday, Tuesday, Wednesday, and Sunday. 7-day minimum stay required.
Category: <span>Basel</span>
American Airlines, British Airways, and Finnair have round-trip flights from Chicago (ORD) to Basel (BSL) for $537 with a connection. Flights March, April, October, November, December, and January. Departures on Monday, Tuesday, Wednesday, and Sunday. 7-day minimum stay required. Holiday blackouts.
British Airways, Iberia, and Finnair have round-trip flights from Atlanta (ATL) to Basel (BSL) for $545-$550 with a connection. Flights October to March. Departures on Monday, Tuesday, Wednesday, and Sunday. 7-day minimum stay required.