Dow jumps 600 points, S&P 500, Nasdaq rise as oil falls as countdown to Nvidia earnings & more related news here

Travel stocks are soaring as oil falls on optimism over U.S.-Iran talks, with the strongest rally in names most exposed to fuel costs.

Airlines and cruise lines are doing the heavy lifting. Alaska Air (ALK), Frontier Group (ULCC), United Airlines (UAL), Carnival (CCL), Delta Air Lines (DAL), and Norwegian Cruise Line (NCLH) are all up around 10% intraday.

Meanwhile, American Airlines (AAL), JetBlue (JBLU), Southwest Airlines (LUV), and Hyatt (H) rose more than 5%.

United is on track to have its best day in nine months, as is the US Global Jets ETF (JETS). Delta is approaching its first record closing in three months.

Lower fuel costs are the biggest catalyst.

Oil is falling on hopes of progress in U.S.-Iran talks, and the same move that pressures energy stocks is boosting airlines, cruise operators and other travel names.

The rally is also off a weak base, with several travel stocks still down year-to-date or negative since the March 30 market low.

If oil continues to fall, travel bulls finally have a catalyst that could last beyond a one-day bounce.