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$546+ Cheap flights from Missoula to Petersburg, AK (MSO - PSG)

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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
MSO — PSG
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
1 adult, Economy
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Cheap flight deals from Missoula to Petersburg

Cheapest flights from Missoula to Petersburg
Explore the most affordable flight options available from Missoula to Petersburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 27, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/317:00 am
MSO
-
PSG
3 stops29h 44m
Alaska Airlines
Sat 4/43:10 pm
PSG
-
MSO
3 stops30h 47m
Alaska Airlines
Deal found 1/25$546

Find flight deals from Missoula to Petersburg

Discover tips and strategies to find the most affordable flight options for your journey from Missoula (MSO) to Petersburg (PSG). 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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$546
(Alaska Airlines)
Provider with most accurate pricing for Missoula Johnson-Bell Field-Petersburg flight deals.
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Provider most trusted by Cheapflights users for Missoula Johnson-Bell Field-Petersburg flights.
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From Missoula Johnson-Bell Field to Petersburg
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Missoula to Petersburg 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 January 27, 2026.
Use the filters below to find and compare flights from Missoula to Petersburg that are best for you.

Fly from

Missoula

Fly to

Petersburg

Route

Depart

Return

Price

MissoulaPetersburg

MSO - PSG

MSOPSG

Missoula Johnson-Bell Field

Tue 3/31

7:00 am-10:44 am

3 stops29h 44m

Petersburg

Sat 4/4

3:10 pm-11:57 pm

3 stops30h 47m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

  • Most accurate provider: When it comes to deals on Missoula-Petersburg, Alaska flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Missoula-Petersburg, Alaska flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Missoula-Petersburg, Alaska flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Missoula-Petersburg, Alaska flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Missoula-Petersburg, Alaska flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Missoula to Petersburg

Have a flexible travel schedule? Discover the best time to fly to Petersburg from Missoula 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.

Related info for your journey

Find useful and relevant information for your journey from Missoula to Petersburg. 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 Missoula to Petersburg, Alaska?

    Departing from Missoula to Petersburg, Alaska will take you 29h 44m. Missoula and Petersburg, Alaska are separated by a distance of 1048 mi.

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

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

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

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

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

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

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