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$289+ Cheap flights from Greenville to Missoula (GSP - MSO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
GSP — MSO
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from Greenville to Missoula

Discover tips and strategies to find the most affordable flight options for your journey from Greenville (GSP) to Missoula (MSO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 20, 2025.

Round-trip from

$289
(American Airlines)

Popular in

June

Cheapest in

January

Average price

$650
From Greenville to Missoula Johnson-Bell Field
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Highest demand for flights based on searches. 17% potential increase in price ($112 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Greenville to Missoula

Cheapest flights from Greenville to Missoula
Explore the most affordable flight options available from Greenville to Missoula. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This American Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:15 amGSP - MSO
1 stop7h 45mAmerican Airlines
Sat 9/271:51 pmMSO - GSP
1 stop6h 39mAmerican Airlines
Deal found 8/19$289
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/204:30 pmGSP - MSO
1 stop6h 52mUnited Airlines
Sat 9/276:25 amMSO - GSP
2 stops8h 28mUnited Airlines
Deal found 8/18$384
This Delta deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/235:30 amGSP - MSO
2 stops11h 06mDelta
Tue 8/266:24 pmMSO - GSP
2 stops12h 57mDelta
Deal found 8/18$464
This American Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:41 amGSP - MSO
1 stop7h 20mAmerican Airlines
Mon 9/81:51 pmMSO - GSP
1 stop6h 39mAmerican Airlines
Deal found 8/19$473
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/16:08 amGSP - MSO
2 stops14h 07mUnited Airlines
Mon 9/812:30 pmMSO - GSP
1 stop8h 16mUnited Airlines
Deal found 8/19$474

Cheapflights Fare Finder

 
Customize your flight search to find flights from Greenville to Missoula that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Greenville to Missoula that are best for you.

Fly from

Greenville

Fly to

Missoula

Route

Depart

Return

Price

GreenvilleMissoula

GSP - MSO

GSPMSO

Greenville

Sat 9/20

7:15 am-1:00 pm

1 stop7h 45m

Missoula Johnson-Bell Field

Sat 9/27

1:51 pm-10:30 pm

1 stop6h 39m

$289

GreenvilleMissoula

GSP - MSO

GSPMSO

Greenville

Sat 9/20

4:30 pm-9:22 pm

1 stop6h 52m

Missoula Johnson-Bell Field

Sat 9/27

6:25 am-4:53 pm

2 stops8h 28m

$384

GreenvilleMissoula

GSP - MSO

GSPMSO

Greenville

Mon 9/1

7:41 am-1:01 pm

1 stop7h 20m

Missoula Johnson-Bell Field

Mon 9/8

1:51 pm-10:30 pm

1 stop6h 39m

$473

GreenvilleMissoula

GSP - MSO

GSPMSO

Greenville

Mon 9/1

6:08 am-6:15 pm

2 stops14h 07m

Missoula Johnson-Bell Field

Mon 9/8

12:30 pm-10:46 pm

1 stop8h 16m

$474

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Best time to book a flight from Greenville to Missoula

Have a flexible travel schedule? Discover the best time to fly to Missoula from Greenville with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Greenville to Missoula

What is the cheapest month to book a flight from Greenville to Missoula?

Currently, October is the cheapest month in which you can book a flight from Greenville to Missoula (average of $365). Flying from Greenville to Missoula in March is currently the most expensive (average of $506). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GSP to MSO?

Find hourly flight availability from Greenville to Missoula. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

When flying from Greenville to Missoula, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 24% versus a flight in the morning.

Reviews of airlines servicing Missoula

Get insights into the airlines that provide service to Missoula. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missoula. Reviews last updated August 20, 2025.
See what other customers who have flown with United Airlines and American Airlines from Greenville to Missoula have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,928 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,928 reviews
United Airlines
7.4
Good
8,928 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,928 reviews

Crew

8.1

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Greenville to Missoula. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Greenville to Missoula?

    There are many flights that can get you from Greenville to Missoula in 6h 52m. Fly via American Airlines or United Airlines to get the fastest option. The distance between Greenville and Missoula is about 1841 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Greenville to Missoula round-trip?

    According to our current data, United Airlines ($288), and American Airlines ($288) offers the cheapest pricing from Greenville to Missoula. These flights start at 44% lower than the current average price 3 months from now.

  • Can I find deals for flights from Greenville to Missoula that include hotel bookings?

    Yes. In addition to deals on Greenville to Missoula flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Greenville to Missoula?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Greenville to Missoula.

  • Can I find deals for business class flights from Greenville to Missoula?

    Yes. Cheapflights offers flight deals from Greenville to Missoula by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Greenville to Missoula?

    Currently, October is the cheapest month in which you can book a flight from Greenville to Missoula (average of $365). Flying from Greenville to Missoula in March is currently the most expensive (average of $506). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from Greenville to Missoula

Discover the top 2 airlines that operate flights from Greenville to Missoula. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$288Average$561FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$602FlexibilityNo cancel feeOn-time71%

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