$251 Cheap Alaska Airlines flights Boise (BOI) to Petersburg (PSG)

View $251 flight on Thu, Aug 21, 2025Opens in a new window

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$251 Cheap Alaska Airlines flights Boise (BOI) to Petersburg (PSG)

Prices were available within the past 7 days and start at $251 for one-way flights and $570 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Sep 17 - Wed, Sep 24
BOI
Boise
PSG
Petersburg
$570 Roundtrip, found 3 days ago
$570
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Sep 17 from Boise to Petersburg, returning Wed, Sep 24, priced at $570 found 3 days ago
Alaska Airlines
Sat, Aug 30 - Tue, Sep 9
BOI
Boise
PSG
Petersburg
$575 Roundtrip, found 5 days ago
$575
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Boise to Petersburg, returning Tue, Sep 9, priced at $575 found 5 days ago
Alaska Airlines
Wed, Aug 27 - Mon, Sep 8
BOI
Boise
PSG
Petersburg
$578 Roundtrip, found 3 days ago
$578
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Aug 27 from Boise to Petersburg, returning Mon, Sep 8, priced at $578 found 3 days ago
Alaska Airlines
Wed, Aug 27 - Sat, Sep 6
BOI
Boise
PSG
Petersburg
$579 Roundtrip, found 3 days ago
$579
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Aug 27 from Boise to Petersburg, returning Sat, Sep 6, priced at $579 found 3 days ago
Alaska Airlines
Sat, Aug 30 - Tue, Sep 9
BOI
Boise
PSG
Petersburg
$619 Roundtrip, found 4 days ago
$619
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Boise to Petersburg, returning Tue, Sep 9, priced at $619 found 4 days ago
Alaska Airlines
Sat, Aug 30 - Mon, Sep 8
BOI
Boise
PSG
Petersburg
$620 Roundtrip, found 3 days ago
$620
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Aug 30 from Boise to Petersburg, returning Mon, Sep 8, priced at $620 found 3 days ago
Flights from Boise (BOI) to Petersburg (PSG)
Origin airport
Boise
Destination airport
Petersburg
Airlines serving
Alaska Airlines
Popular airline
Alaska Airlines
Distance
1169 mi

Frequently asked questions

How much is an Alaska Airlines flight from Boise Airport (BOI) to Petersburg Airport (PSG)?
You can discover affordable return Alaska Airlines flights from $570 from BOI to PSG by filtering your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $251 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BOI to PSG with Alaska Airlines?
Book your BOI to PSG flights with Alaska Airlines during the low season if you want to get a good price on your fare. Try to avoid traveling during peak periods such as public holidays or major events.
What is the cheapest time to book flights from Boise Airport (BOI) to Petersburg Airport (PSG) with Alaska Airlines?
Look for affordable Alaska Airlines flights from Boise Airport (BOI) to Petersburg Airport (PSG) one to three months ahead of your departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and itinerary, the best day of the week to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from Boise Airport (BOI) to Petersburg Airport (PSG)?
To find out if there's a direct trip from BOI to PSG with Alaska Airlines or another carrier, check the "Nonstop" box when looking for flights.
What is the earliest Alaska Airlines flight from BOI to PSG?
Sort your results by "Morning" and "Early Morning" to browse the earliest departures from BOI to PSG. Leaving early means you're 20% less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in Petersburg?
Petersburg Airport (PSG) is the primary Petersburg hub for Alaska Airlines flights from Boise Airport (BOI).
Why fly with Alaska Airlines from BOI to PSG?
Offering top-tier customer service and an excellent in-flight experience, Alaska Airlines is a popular option for many passengers heading from BOI to PSG. Also, if you're a Mileage Plan and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Alaska Airlines flight from Boise Airport (BOI) to Petersburg Airport (PSG)?
Changes are generally free within 24 hours of making a booking, but your airline may charge you after that. For further information about modifying your flights, check out your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to adjust your plans without additional costs, check the "No cancel fee" or "Changes included" filter when organizing your next getaway.

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