The airline industry has been one of the hardest hit by this summer’s run-up in crude oil prices.

British Airways (LON:BAY) CEO Willie Walsh says it’s “the worst trading environment the industry has ever faced.”

But crude oil’s retreat from its early-July peak has led investors back into the industry, says Martin Denholm in The Smart Profits Report.

And Martin’s colleague Marc Lichtenfeld has given potential investors two stocks to watch should the uptrend continue. Here’s more from Martin…

As the dollar continues its historic decline, imported goods will become too costly for many Americans.  In addition, more of those products still made domestically will be exported to wealthier foreign consumers whose appreciated currencies increase their purchasing power.

If you had $53 trillion, what would it look like? Major airline merger…what “the new Delta” means for your money. China and Dubai join forces…how the new partners plan to invest. Retail sales surprise on the upside…but all that glitters is not gold in the latest commerce report. Plus, your tax-day overtime report… four reasons not to raise the capital gains tax.

Delta Air Lines Inc. (DAL) and Northwest Airlines Corp. (NWA) are now officially one company, and together now represent the world’s largest airline carrier.