Super cheap flights from many US cities to Europe from only $69 one-way. Also works in reverse (from €129 one-way).
Cheap flights from San Francisco or Los Angeles to Ponce, Puerto Rico from only $283 roundtrip with JetBlue.
Cheap flights from Los Angeles or San Francisco to Copenhagen, Denmark for only $312 roundtrip with Air Canada.
Cheap flights from Houston to San Francisco for only $106 roundtrip with American Airlines. Also works in reverse.
Open-jaw flights from US cities to Johannesburg, South Africa, returning to Europe from only $449 with Qatar Airways.
Cheap flights from many US cities to Hong Kong for only $483 roundtrip with American Airlines.
Non-stop flights from San Francisco to Puerto Vallarta, Mexico for only $211 roundtrip with United Airlines.
American Airlines have put many USA to Europe routes on sale.
Cheap flights from many US cities to Madrid, Spain for only $412 roundtrip with American Airlines.