Update: Some offers mentioned below are no longer available. View the current offers here.It appears that United and Delta are trying to outdo one another on their pricing to Dubai for departures this May - November. Thanks to a tip from our friends at Stealth Trips, we found several great deals from United and Delta hubs to Dubai for flights as low as $640 roundtrip.Here are some details about these fares:- Destination: Dubai- Departure: NYC, Boston, Houston, Dallas, Chicago, others.- Dates: as early as May 4th, through this Fall.- Where to Buy: Orbitz has all of these deals, as do Delta.com and United.comHere are some sample round-trip flights we found:New York- Dubai:United Price: $640 RTMileage: 14,596 PQMsSign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Chicago- Dubai:United Price: $690 RTMileage: 15,316 PQMsHouston to Dubai:United Price: $690 RTMileage: 16,518 PQMsDallas-Ft. Worth- DubaiDelta Price: $690 RTMileage: 16,654 MQMsNew York (LGA)- DubaiDelta Price: $640 RTMileage: 16,716 MQMsBoston-DubaiDelta Price: $640 RTMileage: 17,086 MQMsWhen booking these, be sure to use a credit card that maximizes airfare purchases, like 3x on airfare with the American Express Premier Rewards Gold or 2x on the Chase Sapphire Preferred. Check out this post for more on maximizing airfare purchases.Consider checking out the Park Hyatt DubaiAlso check out our Dubai posts including the Destination of the Week: Dubai and the Etihad Mistake-Fare Guide to Dubai including some of the best sights, dining, and hotels while in Dubai.If you’re able to score these cheap flights to Dubai, we’d love to hear, so feel free to comment below with your successes!