$623+ Cheap flights from Montana to Petersburg, AK (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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — PSG
Oct 16 — Oct 231
1 adult, Economy
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1. Tell us where you want to go
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Montana to Petersburg
Keep the following information in mind while searching for Montana to Petersburg flight deals. Data was last updated September 16, 2025.
Round-trip from | $623 (Alaska Airlines) |
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Find flight deals from Montana to Petersburg
Cheapest flights from Montana to PetersburgExplore the most affordable flight options available from Montana to Petersburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.
Explore the most affordable flight options available from Montana to Petersburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 10/14:14 pmMSO - PSG
3 stops20h 27mAlaska Airlines
Sun 10/52:50 pmPSG - MSO
3 stops19h 28mAlaska Airlines
Deal found 9/16![Alaska Airlines logo]()
$623
Cheapflights Fare Finder
Customize your flight search to find flights from Montana 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 September 16, 2025.
Use the filters below to find and compare flights from Montana to Petersburg that are best for you.
Fly from
Montana
Fly to
Petersburg
Route
Depart
Return
Price
MissoulaPetersburg
MSO - PSG
MSOPSG
Missoula Johnson-Bell Field
Wed 10/1
4:14 pm-10:41 am
3 stops20h 27m
Petersburg
Sun 10/5
2:50 pm-12:18 pm
3 stops19h 28m
$623
Best time to book a flight from Montana to Petersburg
Have a flexible travel schedule? Discover the best time to fly to Petersburg from Montana 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 Montana to Petersburg
What is the cheapest time of day to fly from MT to PSG?
Find hourly flight availability from Montana to Petersburg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Montana to Petersburg, Alaska as you normally would.