$120 Cheap Flights from Missoula (MSO) to Houston (IAH)

View $120 flight on Fri, Jun 6, 2025Opens in a new window

Popular airlines from Missoula Intl. Airport (MSO) to George Bush Intercontinental Airport (IAH)

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Find available prices by choosing your travel dates.

Cheap Flights from Missoula to Houston (MSO-IAH)

Prices were available within the past 7 days and start at $120 for one-way flights and $208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, May 30 - Mon, Jun 2
MSO
Missoula
IAH
Houston
$208 Roundtrip, found 9 hours ago
$208
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, May 30 from Missoula to Houston, returning Mon, Jun 2, priced at $208 found 9 hours ago
Frontier Airlines
Fri, May 30 - Fri, Jun 6
MSO
Missoula
IAH
Houston
$228 Roundtrip, found 9 hours ago
$228
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, May 30 from Missoula to Houston, returning Fri, Jun 6, priced at $228 found 9 hours ago
Frontier Airlines
Fri, Jun 13 - Mon, Jun 23
MSO
Missoula
IAH
Houston
$246 Roundtrip, found 9 hours ago
$246
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, Jun 13 from Missoula to Houston, returning Mon, Jun 23, priced at $246 found 9 hours ago
Frontier Airlines
Fri, Aug 1 - Mon, Aug 4
MSO
Missoula
IAH
Houston
$266 Roundtrip, found 8 hours ago
$266
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Missoula to Houston, returning Mon, Aug 4, priced at $266 found 8 hours ago
Frontier Airlines
Fri, May 30 - Thu, Jun 19
MSO
Missoula
IAH
Houston
$268 Roundtrip, found 9 hours ago
$268
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, May 30 from Missoula to Houston, returning Thu, Jun 19, priced at $268 found 9 hours ago
Frontier Airlines
Fri, May 30 - Tue, Jun 3
MSO
Missoula
IAH
Houston
$278 Roundtrip, found 1 day ago
$278
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, May 30 from Missoula to Houston, returning Tue, Jun 3, priced at $278 found 1 day ago
Delta
Mon, May 26 - Mon, Jun 2
MSO
Missoula
IAH
Houston
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, May 26 from Missoula to Houston, returning Mon, Jun 2, priced at $299 found 1 day ago
Alaska Airlines
Sat, Jun 14 - Mon, Jun 16
MSO
Missoula
IAH
Houston
$300 Roundtrip, found 14 hours ago
$300
Roundtrip
found 14 hours ago
Select Alaska Airlines flight, departing Sat, Jun 14 from Missoula to Houston, returning Mon, Jun 16, priced at $300 found 14 hours ago
United
Sat, Jun 14 - Mon, Jun 16
MSO
Missoula
IAH
Houston
$311 Roundtrip, found 14 hours ago
$311
Roundtrip
found 14 hours ago
Select United flight, departing Sat, Jun 14 from Missoula to Houston, returning Mon, Jun 16, priced at $311 found 14 hours ago
American Airlines
Sat, May 24 - Wed, May 28
MSO
Missoula
IAH
Houston
$337 Roundtrip, found 1 day ago
$337
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, May 24 from Missoula to Houston, returning Wed, May 28, priced at $337 found 1 day ago
Flights from Missoula (MSO) to Houston (IAH)
Origin airport
Missoula Intl.
Destination airport
George Bush Intercontinental
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, United
Roundtrip price
$208
Distance
1539 mi

Missoula to Houston Flights

The cheapest times to fly from Missoula to Houston

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

The best time to book a flight from Missoula to Houston

Sunday is one of the best days to book for cheap flights from Missoula to Houston: 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 Houston

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 Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from $120 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 Houston 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 Houston 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 George Bush Intercontinental Airport (IAH) cost?
Discover the latest flight deals from MSO to IAH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from MSO to IAH?
The cheapest flights from MSO to IAH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from MSO to IAH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from MSO to IAH. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Missoula Intl. Airport (MSO) to George Bush Intercontinental Airport (IAH)?
There aren’t any daily nonstop flights departing from Missoula Intl. Airport (MSO) to George Bush Intercontinental Airport (IAH). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you’ll be on your way in no time at all.
What day of the week has the most flights from MSO to IAH?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a number of factors, such as the airline and season.*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 George Bush Intercontinental Airport (IAH)?
To arrive at George Bush Intercontinental Airport (IAH) without delays, book a flight that leaves Missoula Intl. Airport (MSO) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 George Bush Intercontinental Airport (IAH) last-minute?
Booking your plane ticket from MSO to IAH right before your getaway is generally more expensive. However, if you’re flexible with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a MSO to IAH flight and hotel package?
You’ll typically save money by booking a MSO to IAH flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it’s easy to manage everything in one convenient place. After selecting your ideal flights and accommodations, consider adding extras such as tours, car rentals and activities.
Can I cancel or change the date of my flight from Missoula Intl. Airport (MSO) to George Bush Intercontinental Airport (IAH)?
You can usually cancel or reschedule your MSO to IAH flight. However, if it’s been more than 24 hours since booking, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are allowed and if any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.