$150 Cheap Delta flights Helena (HLN) to Las Vegas (LAS)

Scoring cheap one-way Delta Air Lines flights from HLN to LAS from $150 on Expedia is simple — just filter by “Price (lowest to highest).” Alternatively, check out our affordable return fares from $294 for your next break.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the least expensive months to get away to Las Vegas with Delta Air Lines. You could also find fantastic deals on return and one-way fares in June.

Search for cheap Delta Air Lines flights from Helena Regional Airport (HLN) to Harry Reid Intl. Airport (LAS) one to three months ahead of your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the ideal day to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Enter your dates, press search and select “Nonstop” on Expedia to find any direct flights from HLN to LAS with Delta Air Lines or other carriers.

To find the earliest departure from HLN to LAS with Delta Air Lines, sort your results by “Morning” and “Early Morning.” Booking an early flight usually means cancellations are less likely.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Harry Reid Intl. Airport (LAS) is the main Las Vegas gateway for Delta Air Lines flights from Helena Regional Airport (HLN).

Flying from HLN to LAS with Delta Air Lines means enjoying a range of perks, such as a rewarding loyalty program and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can collect OneKeyCash™* to redeem on select future travel purchases. That’s in addition to the Delta SkyMiles points you can earn with Delta Air Lines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of fare you purchased, a fee will generally apply if you change or cancel your booking more than 24 hours after confirmation. To find flexible plane tickets, select our “No cancel fee” or “Changes included” filter when you search for flights. For more details on canceling or changing your reservation, head to “Trips,” select your flight and tick “Manage Booking.”