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Driving distance from Houston, TX to New Orleans, LA. The total driving distance from Houston, TX to New Orleans, LA is 347 miles or 558 kilometers. Your trip begins in Houston, Texas. It ends in New Orleans, Louisiana. If you are planning a road trip, you might also want to calculate the total driving time from Houston, TX to New Orleans, LA so you can see when you'll arrive at your destination.
Gas cost estimates for this New Orleans to Dallas trip. If you were travelling in a vehicle that averaged 35 MPG and were paying $3.09 per gallon for your gas then the cost for a trip based upon an estimated distance of 537.6 drive miles from New Orleans to Dallas * in gas would be in the region of $47.46 USD.