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Petersburg

$419+ Cheap flights from Seattle to Petersburg, AK (SEA - 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PSG
Aug 12 — Aug 191
Tue 8/12
Tue 8/19
1 adult, Economy
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Cheap 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 August 7, 2025.

Round-trip from

$771
(Alaska Airlines)

One-way from

$506
(Alaska Airlines)

Good round-trip deal

$578 or less
From Seattle/Tacoma Intl to Petersburg
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One-way flight from Seattle/Tacoma Intl to Petersburg
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Petersburg.
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Find 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 August 7, 2025.

This Alaska Airlines deal was found by Cheapflights users on 8/7. 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 9/96:54 amSEA - PSG
2 stops4h 47mAlaska Airlines
Tue 9/162:52 pmPSG - SEA
2 stops4h 43mAlaska Airlines
Deal found 8/7$419
This Alaska Airlines deal was found by Cheapflights users on 8/7. 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.
Fri 8/226:54 amSEA - PSG
2 stops4h 47mAlaska Airlines
Tue 8/2611:26 amPSG - SEA
1 stop5h 11mAlaska Airlines
Deal found 8/7$739
This Alaska Airlines deal was found by Cheapflights users on 8/5. 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 8/1710:55 pmSEA - PSG
3 stops12h 49mAlaska Airlines
Mon 8/252:55 pmPSG - SEA
3 stops30h 20mAlaska Airlines
Deal found 8/5$771
This Alaska Airlines deal was found by Cheapflights users on 8/6. 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.
Fri 8/226:54 amSEA - PSG
Nonstop4h 47mAlaska Airlines
Thu 8/2811:26 amPSG - SEA
1 stop5h 11mAlaska Airlines
Deal found 8/6$778

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 August 7, 2025.
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

Tue 9/9

6:54 am-10:41 am

2 stops4h 47m

Petersburg

Tue 9/16

2:52 pm-8:35 pm

2 stops4h 43m

$419

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Fri 8/22

6:54 am-10:41 am

2 stops4h 47m

Petersburg

Tue 8/26

11:26 am-5:37 pm

1 stop5h 11m

$739

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Sun 8/17

10:55 pm-10:44 am

3 stops12h 49m

Petersburg

Mon 8/25

2:55 pm-10:15 pm

3 stops30h 20m

$771

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Fri 8/22

6:54 am-10:41 am

Nonstop4h 47m

Petersburg

Thu 8/28

11:26 am-5:37 pm

1 stop5h 11m

$778

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Sun 8/10

7:00 am-2:07 pm

1 stop8h 07m

$506

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Sun 8/10

10:55 pm-2:07 pm

1 stop16h 12m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

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 August 7, 2025.

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 August 7, 2025.
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
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Food

7.1

Crew

8.5

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    Alaska Airlines, at $419, was found to be the cheapest airline from Seattle to Petersburg, Alaska..

  • What are the cheapest flights from Seattle to Petersburg, Alaska?

    The cheapest flight price from Seattle to Petersburg, Alaska is $468. On average you can expect to pay $578. The most popular route, (Seattle/Tacoma Intl - Petersburg), can usually be booked for $778.

  • 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 August 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$468Average$610FlexibilityNo cancel feeOn-time75%

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