$233 Cheap Flights from Missoula (MSO) to St. George (SGU)

View $233 flight on Wed, Sep 24, 2025Opens in a new window

Popular airlines from Missoula Intl. Airport (MSO) to St. George Regional Airport (SGU)

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Cheap Flights from Missoula to St. George (MSO-SGU)

Prices were available within the past 7 days and start at $233 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Aug 30 - Sun, Aug 31
MSO
Missoula
SGU
St. George
$238 Roundtrip, found 11 hours ago
$238
Roundtrip
found 11 hours ago
Select Delta flight, departing Sat, Aug 30 from Missoula to St. George, returning Sun, Aug 31, priced at $238 found 11 hours ago
Delta
Tue, Aug 26 - Sun, Aug 31
MSO
Missoula
SGU
St. George
$243 Roundtrip, found 11 hours ago
$243
Roundtrip
found 11 hours ago
Select Delta flight, departing Tue, Aug 26 from Missoula to St. George, returning Sun, Aug 31, priced at $243 found 11 hours ago
Delta
Sat, Sep 20 - Tue, Oct 7
MSO
Missoula
SGU
St. George
$268 Roundtrip, found 3 days ago
$268
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 20 from Missoula to St. George, returning Tue, Oct 7, priced at $268 found 3 days ago
Delta
Tue, Dec 16 - Thu, Jan 1
MSO
Missoula
SGU
St. George
$287 Roundtrip, found 6 days ago
$287
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Dec 16 from Missoula to St. George, returning Thu, Jan 1, priced at $287 found 6 days ago
Delta
Sun, Dec 28 - Sat, Jan 17
MSO
Missoula
SGU
St. George
$297 Roundtrip, found 6 days ago
$297
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Dec 28 from Missoula to St. George, returning Sat, Jan 17, priced at $297 found 6 days ago
Delta
Sat, Sep 20 - Mon, Oct 6
MSO
Missoula
SGU
St. George
$298 Roundtrip, found 3 days ago
$298
Roundtrip
found 3 days ago
Select Delta flight, departing Sat, Sep 20 from Missoula to St. George, returning Mon, Oct 6, priced at $298 found 3 days ago
United
Thu, Sep 18 - Wed, Oct 8
MSO
Missoula
SGU
St. George
$308 Roundtrip, found 3 days ago
$308
Roundtrip
found 3 days ago
Select United flight, departing Thu, Sep 18 from Missoula to St. George, returning Wed, Oct 8, priced at $308 found 3 days ago
United
Tue, Aug 26 - Sat, Aug 30
MSO
Missoula
SGU
St. George
$313 Roundtrip, found 11 hours ago
$313
Roundtrip
found 11 hours ago
Select United flight, departing Tue, Aug 26 from Missoula to St. George, returning Sat, Aug 30, priced at $313 found 11 hours ago
Delta
Fri, Nov 28 - Tue, Dec 9
MSO
Missoula
SGU
St. George
$317 Roundtrip, found 6 days ago
$317
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Nov 28 from Missoula to St. George, returning Tue, Dec 9, priced at $317 found 6 days ago
American Airlines
Thu, Jan 15 - Sun, Jan 18
MSO
Missoula
SGU
St. George
$1,001 Roundtrip, found 3 days ago
$1,001
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Jan 15 from Missoula to St. George, returning Sun, Jan 18, priced at $1,001 found 3 days ago
Flights from Missoula (MSO) to St. George (SGU)
Origin airport
Missoula Intl.
Destination airport
St. George
Airlines serving
American Airlines, Delta, United
Roundtrip price
$238
Distance
683 mi

Missoula to St. George Flights

The cheapest times to fly from Missoula to St. George

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 Missoula to St. George are during the month of August. You can find some of the cheapest flights from Missoula to St. George with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Missoula to St. George: 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 Missoula to St. George

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 Missoula to St. George in 2025. You can also book with separate airlines for your outbound and return journeys, from $233 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 Missoula to St. George 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 Missoula to St. George 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 Missoula Intl. Airport (MSO) to St. George Airport (SGU) cost?
Snag a cheap one-way flight from $233 or cheap return flight from $238 from Missoula Intl. Airport (MSO) to St. George Airport (SGU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Missoula Intl. Airport (MSO) to St. George Airport (SGU)?
August is the cheapest month to fly from MSO to SGU. Traveling during an off-peak travel window is often the key to scoring lower fares.
What is the cheapest airline that flies from Missoula Intl. Airport (MSO) to St. George Airport (SGU)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest MSO to SGU flight.
How many flights per day from Missoula Intl. Airport (MSO) to St. George Airport (SGU)?
There are no daily direct flights from Missoula Intl. Airport (MSO) to St. George Airport (SGU). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from MSO to SGU?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Missoula Intl. Airport (MSO) to St. George Airport (SGU)?
Choose a flight from Missoula Intl. Airport (MSO) to St. George Airport (SGU) that leaves before 3 PM to reduce the likelihood of delays. Later departures 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.
Is it cheaper to buy a plane ticket from Missoula Intl. Airport (MSO) to St. George Airport (SGU) last-minute?
Last-minute bookings from MSO to SGU are generally more expensive. For the lowest rates, start looking for flights well ahead of time. That being said, if you can play around with your travel dates, it's possible to score a cheap ticket right before you leave.
Is it cheaper to book a MSO to SGU flight and hotel package?
Compared with arranging hotels and flights separately, booking a MSO to SGU flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the stress out of travel planning. Just pick your flights and select from our extensive range of stays, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Missoula Intl. Airport (MSO) to St. George Airport (SGU)?
If you booked your MSO to SGU flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.