$271 Cheap Alaska Airlines flights Boise (BOI) to Petersburg (PSG)

View $271 flight on Thu, Sep 18, 2025Opens in a new window

$271 Cheap Alaska Airlines flights Boise (BOI) to Petersburg (PSG)

Prices were available within the past 7 days and start at $271 for one-way flights and $540 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Oct 1 - Tue, Oct 21
BOI
Boise
PSG
Petersburg
$540 Roundtrip, found 5 days ago
$540
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Oct 1 from Boise to Petersburg, returning Tue, Oct 21, priced at $540 found 5 days ago
Alaska Airlines
Wed, Oct 1 - Sat, Oct 18
BOI
Boise
PSG
Petersburg
$541 Roundtrip, found 5 days ago
$541
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Wed, Oct 1 from Boise to Petersburg, returning Sat, Oct 18, priced at $541 found 5 days ago
Alaska Airlines
Fri, Sep 26 - Tue, Oct 7
BOI
Boise
PSG
Petersburg
$579 Roundtrip, found 5 days ago
$579
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Fri, Sep 26 from Boise to Petersburg, returning Tue, Oct 7, priced at $579 found 5 days ago
Alaska Airlines
Sun, Sep 28 - Tue, Oct 14
BOI
Boise
PSG
Petersburg
$580 Roundtrip, found 5 days ago
$580
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sun, Sep 28 from Boise to Petersburg, returning Tue, Oct 14, priced at $580 found 5 days ago
Alaska Airlines
Sat, Oct 4 - Tue, Oct 21
BOI
Boise
PSG
Petersburg
$589 Roundtrip, found 5 days ago
$589
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, Oct 4 from Boise to Petersburg, returning Tue, Oct 21, priced at $589 found 5 days ago
Alaska Airlines
Tue, Oct 7 - Tue, Oct 21
BOI
Boise
PSG
Petersburg
$593 Roundtrip, found 5 days ago
$593
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Tue, Oct 7 from Boise to Petersburg, returning Tue, Oct 21, priced at $593 found 5 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 $540 from BOI to PSG by filtering your results from "Price (lowest to highest)" on Expedia. Or look for bargains from $271 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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*Available to One Key members.