$185 Cheap Flights from St. George (SGU) to Boise (BOI)

View $185 flight on Tue, Jan 6, 2026Opens in a new window

Popular airlines from St. George Regional Airport (SGU) to Boise Airport (BOI)

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Cheap Flights from St. George to Boise (SGU-BOI)

Prices were available within the past 7 days and start at $185 for one-way flights and $218 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Jan 6 - Sat, Jan 10
SGU
St. George
BOI
Boise
$218 Roundtrip, found 12 hours ago
$218
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Tue, Jan 6 from St. George to Boise, returning Sat, Jan 10, priced at $218 found 12 hours ago
United
Tue, Jan 6 - Sat, Jan 10
SGU
St. George
BOI
Boise
$218 Roundtrip, found 12 hours ago
$218
Roundtrip
found 12 hours ago
Select United flight, departing Tue, Jan 6 from St. George to Boise, returning Sat, Jan 10, priced at $218 found 12 hours ago
United
Thu, Nov 13 - Sun, Nov 16
SGU
St. George
BOI
Boise
$223 Roundtrip, found 1 day ago
$223
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 13 from St. George to Boise, returning Sun, Nov 16, priced at $223 found 1 day ago
United
Fri, Nov 7 - Tue, Nov 11
SGU
St. George
BOI
Boise
$228 Roundtrip, found 5 days ago
$228
Roundtrip
found 5 days ago
Select United flight, departing Fri, Nov 7 from St. George to Boise, returning Tue, Nov 11, priced at $228 found 5 days ago
Delta
Sat, Dec 20 - Thu, Jan 1
SGU
St. George
BOI
Boise
$243 Roundtrip, found 15 hours ago
$243
Roundtrip
found 15 hours ago
Select Delta flight, departing Sat, Dec 20 from St. George to Boise, returning Thu, Jan 1, priced at $243 found 15 hours ago
American Airlines
Mon, Nov 3 - Mon, Nov 10
SGU
St. George
BOI
Boise
$248 Roundtrip, found 11 hours ago
$248
Roundtrip
found 11 hours ago
Select American Airlines flight, departing Mon, Nov 3 from St. George to Boise, returning Mon, Nov 10, priced at $248 found 11 hours ago
United
Mon, Jan 5 - Sun, Jan 11
SGU
St. George
BOI
Boise
$253 Roundtrip, found 19 hours ago
$253
Roundtrip
found 19 hours ago
Select United flight, departing Mon, Jan 5 from St. George to Boise, returning Sun, Jan 11, priced at $253 found 19 hours ago
Delta
Tue, Feb 10 - Sun, Feb 22
SGU
St. George
BOI
Boise
$257 Roundtrip, found 6 days ago
$257
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Feb 10 from St. George to Boise, returning Sun, Feb 22, priced at $257 found 6 days ago
Delta
Fri, Oct 31 - Mon, Nov 10
SGU
St. George
BOI
Boise
$258 Roundtrip, found 1 day ago
$258
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Oct 31 from St. George to Boise, returning Mon, Nov 10, priced at $258 found 1 day ago
United
Fri, Apr 10 - Tue, Apr 14
SGU
St. George
BOI
Boise
$261 Roundtrip, found 3 days ago
$261
Roundtrip
found 3 days ago
Select United flight, departing Fri, Apr 10 from St. George to Boise, returning Tue, Apr 14, priced at $261 found 3 days ago

Alternative airports near Boise

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Boise Airport BOI. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $333
BOI
Boise Airport
CheapestClosest
Average driving time to city center8 min
Flights from $333

Frequently asked questions

How much does a flight from St. George Airport (SGU) to Boise Airport (BOI) cost?
Lock in a cheap one-way flight from $185 or cheap return flight from $218 from St. George Airport (SGU) to Boise Airport (BOI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from St. George Airport (SGU) to Boise Airport (BOI)?
Traveling in January can help you save, as it's the cheapest month for flights between SGU and BOI. You'll often find the lowest prices during the off-season.
What is the cheapest airline that flies from St. George Airport (SGU) to Boise Airport (BOI)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll take you from SGU to BOI. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from St. George Airport (SGU) to Boise Airport (BOI)?
There aren't any daily nonstop flights from St. George Airport (SGU) to Boise Airport (BOI). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from SGU to BOI?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from St. George Airport (SGU) to Boise Airport (BOI)?
To avoid potential delays on the St. George Airport (SGU) to Boise Airport (BOI) route, aim to fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**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.
Is it cheaper to buy a plane ticket from St. George Airport (SGU) to Boise Airport (BOI) last-minute?
Last-minute bookings from SGU to BOI are generally more expensive. To secure the lowest prices, start looking for flights as early as possible. That being said, if you're flexible with your travel plans, you may land a cheap fare right before you leave.
Is it cheaper to book a SGU to BOI flight and hotel package?
You can save money by securing a SGU to BOI flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've selected your ideal accommodations and flights, consider adding extras including tours, car rentals and activities.
Can I cancel or change the date of my flight from St. George Airport (SGU) to Boise Airport (BOI)?
If you booked your SGU to BOI flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
St. George
Destination airport
Boise
Airlines serving
American Airlines, Delta, United
Roundtrip price
$218
Distance
473 mi

Book with confidence

St. George to Boise Flights

The cheapest times to fly from St. George 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 St. George to Boise are during the month of January. You can find some of the cheapest flights from St. George to Boise with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. George to Boise

Sunday is one of the best days to book for cheap flights from St. George 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 St. George 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 St. George to Boise in 2025. You can also book with separate airlines for your outbound and return journeys, from $185 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 St. George 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 St. George 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.

 

St. George to Boise Flights

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*Available to One Key members.