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 is the cheapest day to fly from Seattle to Petersburg, Alaska?

Travelers seeking maximum savings on their Seattle to Petersburg, Alaska flight should consider departing on Sunday mornings when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Petersburg, Alaska ranges from 5.1 - 16.3 inches per month. October is typically the wettest month, when rainfall can reach 16.3 in. June is typically the driest time to visit Petersburg, Alaska when rainfall is around 5.1 in.

If weather is an important factor for your trip to Petersburg, Alaska, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 55.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

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 $645.

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

Flights from Seattle to Petersburg, Alaska are found to be more expensive on Tuesday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets 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.

$319+ Flights from Seattle to Petersburg, AK

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Cheap flight deals from Seattle to Petersburg

Round-trip from	$419 (Alaska Airlines)
One-way from	$319 (TeaFlight)
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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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 July 30, 2025.

Tue 9/26:54 amSEA - PSG

Nonstop4h 47mAlaska Airlines

Tue 9/232:52 pmPSG - SEA

Nonstop4h 43mAlaska Airlines

Deal found 7/30

$419

Best flights from Seattle to Petersburg
Discover carefully curated flight deals from Seattle to Petersburg that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Tue 9/26:54 amSEA - PSG

Nonstop4h 47mAlaska Airlines

Tue 9/232:52 pmPSG - SEA

Nonstop4h 43mAlaska Airlines

Deal found 7/30

$419

Last-minute flights from Seattle to Petersburg
Discover last-minute flight deals from Seattle to Petersburg. Data last updated July 30, 2025 and is based on user searches.

Sun 8/176:35 pmSEA - PSG

1 stop17h 09mAlaska Airlines

Mon 8/2511:26 amPSG - SEA

1 stop5h 11mAlaska Airlines

Deal found 7/29

$656

One-way flights from Seattle to Petersburg
Search for one-way flight options from Seattle to Petersburg. Find affordable one-way fares based on user searches. Data last updated July 30, 2025.

Mon 8/47:00 amSEA - PSG

Nonstop4h 44mAlaska Airlines

Deal found 7/30

$319

Sun 8/1010:55 pmSEA - PSG

1 stop16h 12mMultiple Airlines

Deal found 7/29

$519

Fly from

Fly to

Route

Depart

Return

Price

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Tue 9/2

6:54 am-10:41 am

Nonstop4h 47m

Petersburg

Tue 9/23

2:52 pm-8:35 pm

Nonstop4h 43m

$419

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Mon 8/4

7:00 am-10:44 am

Nonstop4h 44m

$319

SeattlePetersburg

SEA - PSG

SEAPSG

Seattle/Tacoma Intl

Sun 8/10

10:55 pm-2:07 pm

1 stop16h 12m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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?

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

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

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

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

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 $645.
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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Seattle to Petersburg

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$468	Average$610	FlexibilityNo cancel fee	On-time75%

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$319+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Seattle to Petersburg

Round-trip from

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Find flight deals from Seattle to Petersburg

Cheapest flights from Seattle to PetersburgExplore 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 July 30, 2025.

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 July 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Petersburg that are best for you.

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.

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 July 30, 2025.

Reviews of airlines servicing Petersburg

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.

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?

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

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

How can I find direct flights from Seattle to Petersburg?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Petersburg

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Seattle to Petersburg

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Book with Flexibility

Travel Smart

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 July 30, 2025.