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$248+ Cheap flights from Seattle to Petersburg, AK (SEA - PSG)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PSG
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
1 adult, Economy
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Cheap flight deals from Seattle to Petersburg

Cheapest flights from Seattle to Petersburg
Explore the most affordable flight options available from Seattle to Petersburg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 19, 2026.

This Alaska Airlines deal was found by Cheapflights users on 2/16. 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.
Mon 3/166:23 pm
SEA
-
PSG
1 stop17h 31m
Alaska Airlines
Mon 3/233:10 pm
PSG
-
SEA
Nonstop4h 29m
Alaska Airlines
Deal found 2/16$490
This Alaska Airlines deal was found by Cheapflights users on 2/16. 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.
Mon 3/910:30 pm
SEA
-
PSG
1 stop17h 03m
Alaska Airlines
Sun 3/153:18 pm
PSG
-
SEA
Nonstop4h 29m
Alaska Airlines
Deal found 2/16$498
This Alaska Airlines deal was found by Cheapflights users on 2/16. 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 5/207:00 am
SEA
-
PSG
2 stops4h 41m
Alaska Airlines
Wed 5/203:26 pm
PSG
-
SEA
2 stops4h 30m
Alaska Airlines
Deal found 2/16$536
This Alaska Airlines deal was found by Cheapflights users on 2/15. 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.
Sun 8/167:00 am
SEA
-
PSG
2 stops4h 43m
Alaska Airlines
Sat 8/222:52 pm
PSG
-
SEA
2 stops23h 05m
Alaska Airlines
Deal found 2/15$594
This Alaska Airlines deal was found by Cheapflights users on 2/15. 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 3/37:00 am
SEA
-
PSG
2 stops4h 54m
Alaska Airlines
Sat 3/73:09 pm
PSG
-
SEA
2 stops4h 28m
Alaska Airlines
Deal found 2/15$640

Find flight deals from Seattle to Petersburg

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) 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 February 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$490
(Alaska Airlines)

One-way from

$248
(Alaska Airlines)
Provider with most accurate pricing for Seattle/Tacoma Intl-Petersburg flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Petersburg flights.
Search Deals
From Seattle/Tacoma Intl to Petersburg
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One-way flight from Seattle/Tacoma Intl to Petersburg
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 February 19, 2026.
Use the filters below to find and compare flights from Seattle to Petersburg that are best for you.

Fly from

Seattle

Fly to

Petersburg

Route

Depart

Return

Price

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Mon 3/16

6:23 pm-10:54 am

1 stop17h 31m

Petersburg

Mon 3/23

3:10 pm-8:39 pm

Nonstop4h 29m

$490

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Mon 3/9

10:30 pm-2:33 pm

1 stop17h 03m

Petersburg

Sun 3/15

3:18 pm-8:47 pm

Nonstop4h 29m

$498

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Wed 5/20

7:00 am-10:41 am

2 stops4h 41m

Petersburg

Wed 5/20

3:26 pm-8:56 pm

2 stops4h 30m

$536

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Tue 3/3

7:00 am-10:54 am

Nonstop4h 54m

Petersburg

Sat 3/7

3:09 pm-8:37 pm

Nonstop4h 28m

$640

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Wed 4/29

7:00 am-10:45 am

Nonstop4h 45m

$248

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Thu 4/30

6:24 pm-10:45 am

2 stops17h 21m

$253

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/16

Compare providers for flights from Seattle to Petersburg

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Petersburg in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Petersburg, Alaska flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Petersburg, Alaska flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Petersburg, Alaska flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-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 Seattle-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 Seattle to Petersburg

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

What is the cheapest time of day to fly from SEA to PSG?

Find hourly flight availability from Seattle 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 February 19, 2026.

When flying from Seattle to Petersburg, Alaska, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Petersburg

Get insights into the airlines that provide service to Petersburg. 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 Petersburg. Reviews last updated February 19, 2026.
Read through reviews of airlines operating flights from Seattle to Petersburg, such as Alaska Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,904 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
8.0
Very good
11,904 reviews
Alaska Airlines
8.0
Very good
11,904 reviews

Comfort

7.8

Food

7.1

Crew

8.5

Overall

8.0

Boarding

8.1

Entertainment

7.0

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

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

    Alaska Airlines can get you from Seattle to Petersburg, Alaska in just under 17h 31m. Your travel time can differ by up to . There are 786 mi between Seattle and Petersburg, Alaska.

  • What is the cheapest airline to fly from Seattle to Petersburg, Alaska round-trip?

    Alaska Airlines, at $463, was found to be the cheapest airline from Seattle to Petersburg, Alaska..

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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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Top airline flying from Seattle to Petersburg

Discover the top airline that operate flights from Seattle to Petersburg. 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 February 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$463Average$607FlexibilityNo cancel feeOn-time75%

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