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The route from Minneapolis (MSP) to Las Vegas (LAS) is a very popular route between one of America's largest metropolitan areas and America's entertainment city. No matter whether you have planned your stay in Vegas for a weekend, a bachelor/bachelorette party, or a conference, there will be a great number of direct flights available every day, as there are over 15 direct flights on weekdays. There is a distance of about 1,300 air miles between the cities, and the flight takes from 2h 45m to 3h 10m, making it much faster than a 21+ hour drive. If timed correctly, cheap flights can be found for MSP to LAS travel.

The leisure nature of this route means that fares will be much more volatile than on normal business travel routes, which means that there are ways to benefit for the shrewd ticket buyer.

The seasonal fares on this all-year route are largely determined by the demand on weekends, conventions, and events in Las Vegas.
Prices drop significantly post-New Year's Day period. Mid to late January tends to be fairly cheap except during major conventions such as CES (Consumer Electronics Show).
Prices will be increasing during the March Madness period and NCAA events. Demand for spring break increases towards the latter part of March. Weekend prices will increase faster compared to weekdays during this period.
Fairly inexpensive time with spring break demand subsiding. Summer season hasn't really taken effect in driving tourists away. Prices will be relatively inexpensive during May.
Summer months are fairly busy with the hot climate. July and August prices tend to be high due to school break season. Saving big bucks can be made on flights by booking mid-week flights.
One of the best times to book this flight. Summer travelers have already reduced in number. More comfortable temperatures mean lower prices for flights and hotels.
Fares increase around Thanksgiving and the major conventions of the season. The increase is not as great as that of the routes that have a family holiday aspect to them. Weekend departures continue to fetch a hefty premium.
Prices go up sharply around the Christmas weekend. This is among the busiest weekends of the year in Las Vegas. Bookings 6-8 weeks ahead of time are advised.