$71 Cheap Spirit Airlines flights Boston (BOS) to Las Vegas (LAS)

Scoring cheap one-way Spirit Airlines flights from BOS to LAS from $71 on Expedia is a breeze — just filter by “Price (lowest to highest).” Or check out our budget-friendly return fares from $176 for your next exciting vacation.**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.

Look for round-trip or one-way flights to Las Vegas in January or June. You could find lower fares with Spirit Airlines during these off-peak months.

For cheap Spirit Airlines fares from Logan Intl. Airport (BOS) to Harry Reid Intl. Airport (LAS), start searching one to three months before your intended departure. Reserving domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**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.

To see if there’s a direct trip from BOS to LAS with Spirit Airlines or another airline, check the “Nonstop” box when searching for flights.

Browse Spirit Airlines’s earliest flights from BOS to LAS by selecting the “Early Morning” and “Morning” filters. Not only will you get to your destination sooner, early departures also experience 20% fewer cancellations.**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.

Spirit Airlines flights from Logan Intl. Airport (BOS) to Las Vegas come in to land at Harry Reid Intl. Airport (LAS). This is the main entry point to this city.

A rewarding loyalty program and the ability to rack up points through Free Spirit are the start of the reasons to fly from BOS to LAS with Spirit Airlines. Plus, when you sign up to Expedia’s free One Key™ program, you can earn OneKeyCash™* on top of any airline loyalty program earnings. It’s yours to spend on your next adventure.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee may apply if you change or cancel your booking more than 24 hours after it has been confirmed. To find tickets with more flexibility, select our “Changes included” or “No cancel fee” filter when you search for flights. For more details on canceling or changing your reservation, head to “Trips,” select your flight and click on “Manage Booking.”