Two major U.S. airlines have raised checked baggage fees this week.United Airlines said it will increase fees for first and second checked bags by $10 for tickets purchased starting Friday, April 3. The higher prices apply to tr avel within the U.S., as well as routes to Mexico, Canada and Latin America.RELATED STORY | Airlines warn fare increases likely as Iran war drives fuel price surgeUnder the new pricing, customers who prepay will pay $45 for a first checked bag and $55 for a second, up from $35 and $45. Those who pay within 24 hours of travel will now pay $50 for a first bag and $60 for a second. Fees for a third checked bag or more will rise to $200.RELATED STORY | United Airlines introducing new lie-flat Relax Row seats for long-haul flightsMeanwhile, JetBlue has also raised its checked bag fees, with changes taking effect earlier this week. For most domestic economy passengers, the first checked bag now costs $39, up from $35. During peak travel periods, that fee increases to $49.The increases come as the Strait of Hormuz remains blocked amid the U.S. military campaign in Iran, disrupting a key global oil route. About 20% of the worlds oil supply moves through the strait, and the disruption has pushed fuel prices, including jet fuel, higher. ...read more read less