$45 Cheap Flights from Las Vegas (LAS) to Boise (BOI)

View $45 flight on Fri, Jun 13, 2025Opens in a new window

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Find available prices by choosing your travel dates.

Cheap Flights from Las Vegas to Boise (LAS-BOI)

Prices were available within the past 7 days and start at $45 for one-way flights and $90 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Fri, May 16 - Mon, May 19
LAS
Las Vegas
BOI
Boise
$90 Roundtrip, found 3 hours ago
$90
Roundtrip
found 3 hours ago
Select Spirit Airlines flight, departing Fri, May 16 from Las Vegas to Boise, returning Mon, May 19, priced at $90 found 3 hours ago
Spirit Airlines
Fri, Jul 18 - Mon, Jul 21
LAS
Las Vegas
BOI
Boise
$112 Roundtrip, found 4 hours ago
$112
Roundtrip
found 4 hours ago
Select Spirit Airlines flight, departing Fri, Jul 18 from Las Vegas to Boise, returning Mon, Jul 21, priced at $112 found 4 hours ago
Spirit Airlines
Fri, May 16 - Sun, May 18
LAS
Las Vegas
BOI
Boise
$114 Roundtrip, found 1 hour ago
$114
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Fri, May 16 from Las Vegas to Boise, returning Sun, May 18, priced at $114 found 1 hour ago
Spirit Airlines
Mon, May 12 - Mon, Jun 2
LAS
Las Vegas
BOI
Boise
$117 Roundtrip, found 4 hours ago
$117
Roundtrip
found 4 hours ago
Select Spirit Airlines flight, departing Mon, May 12 from Las Vegas to Boise, returning Mon, Jun 2, priced at $117 found 4 hours ago
Alaska Airlines
Fri, May 16 - Mon, May 19
LAS
Las Vegas
BOI
Boise
$123 Roundtrip, found 3 hours ago
$123
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Fri, May 16 from Las Vegas to Boise, returning Mon, May 19, priced at $123 found 3 hours ago
Spirit Airlines
Fri, Jun 20 - Wed, Jun 25
LAS
Las Vegas
BOI
Boise
$125 Roundtrip, found 1 hour ago
$125
Roundtrip
found 1 hour ago
Select Spirit Airlines flight, departing Fri, Jun 20 from Las Vegas to Boise, returning Wed, Jun 25, priced at $125 found 1 hour ago
Spirit Airlines
Thu, Oct 23 - Sat, Oct 25
LAS
Las Vegas
BOI
Boise
$128 Roundtrip, found 4 hours ago
$128
Roundtrip
found 4 hours ago
Select Spirit Airlines flight, departing Thu, Oct 23 from Las Vegas to Boise, returning Sat, Oct 25, priced at $128 found 4 hours ago
Southwest Airlines
Fri, May 16 - Mon, May 19
LAS
Las Vegas
BOI
Boise
$129 Roundtrip, found 3 hours ago
$129
Roundtrip
found 3 hours ago
Select Southwest Airlines flight, departing Fri, May 16 from Las Vegas to Boise, returning Mon, May 19, priced at $129 found 3 hours ago
Hawaiian Airlines
Tue, May 20 - Wed, May 28
LAS
Las Vegas
BOI
Boise
$137 Roundtrip, found 11 hours ago
$137
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Tue, May 20 from Las Vegas to Boise, returning Wed, May 28, priced at $137 found 11 hours ago
United
Wed, May 21 - Mon, May 26
LAS
Las Vegas
BOI
Boise
$142 Roundtrip, found 3 hours ago
$142
Roundtrip
found 3 hours ago
Select United flight, departing Wed, May 21 from Las Vegas to Boise, returning Mon, May 26, priced at $142 found 3 hours ago
Flights from Las Vegas (LAS) to Boise (BOI)
Origin airport
Harry Reid Intl.
Destination airport
Boise
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, Spirit Airlines, United
Roundtrip price
$90
Distance
520 mi

Las Vegas to Boise Flights

The cheapest times to fly from Las Vegas to Boise

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Las Vegas to Boise are during the month of May. You can find some of the cheapest flights from Las Vegas to Boise with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Las Vegas to Boise

Sunday is one of the best days to book for cheap flights from Las Vegas to Boise: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Las Vegas to Boise

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Las Vegas to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $45 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Las Vegas to Boise flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Las Vegas to Boise airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI) cost?
You can pick up cheap return flights starting at $90 from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI). This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Spirit Airlines flight leaving LAS on May 16 2025 and touching down at BOI. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from LAS to BOI?
The cheapest flights from LAS to BOI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI)?
Fly straight to Boise Airport (BOI). 3 airlines operate direct flights from Harry Reid Intl. Airport (LAS), including:

  • Southwest Airlines
  • Spirit Airlines
  • Alaska Airlines

What is the cheapest airline that flies from LAS to BOI?
With tickets starting at $45 for a one-way flight from LAS to BOI, Spirit Airlines is currently the cheapest airline on this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from LAS on June 20 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI)?
When flying out of Harry Reid Intl. Airport (LAS), you’ll have your pick from an average of 4 daily nonstop flights to Boise Airport (BOI).
What are the most popular departure times for flights from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI)?
Flights between LAS and BOI are busiest at 3 PM. If you want a quieter trip and potentially cheaper fares, choose a departure outside the usual busy windows.
What day of the week has the most flights from LAS to BOI?
Jet off on a Sunday if you’re looking for the biggest selection of flights from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI).
What is the earliest flight from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI)?
Catch the earliest flight at around 6:45AM UTC-8, heading out of Harry Reid Intl. Airport (LAS). You’ll be in the air for roughly 2h 4m, reaching Boise Airport (BOI) at approximately 9:49AM UTC-7.
How long does it take to fly from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI)?
It takes about 1 hour and 54 minutes to travel the 520 mi from LAS to BOI.
What is the best time to fly from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI)?
Select a flight from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI) that takes off before 3 PM to reduce the risk of cancellations. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Boise from Harry Reid Intl. Airport (LAS)?
Boise Airport (BOI) is the only airport in Boise with direct flights from Harry Reid Intl. Airport (LAS). Check out your options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI) last-minute?
Holding off until just before your departure to book a ticket from LAS to BOI generally means paying more. While it’s possible to find some last-minute discounts, they’re not always guaranteed. Keep your travel plans flexible to boost your chances of getting a bargain.
Is it cheaper to book a LAS to BOI flight and hotel package?
Booking a LAS to BOI flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Choose from our extensive range of accommodations and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Harry Reid Intl. Airport (LAS) to Boise Airport (BOI)?
In most cases, you can cancel or modify your LAS to BOI flight. However, additional fees may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline’s fees and policies on flight changes, or if you need more information, head to our Customer Service portal.

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*Available to One Key members.