In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Augustine to Seattle as you normally would.

Most accurate provider : When it comes to deals on St. Augustine-Seattle flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on St. Augustine-Seattle flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from St. Augustine-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Augustine-Seattle flights, Cheapflights users trust Expedia the most. Expedia 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 St. Augustine-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from St. Augustine to Seattle that include hotel bookings?

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

How can I find direct flights from St. Augustine to Seattle?

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

Can I find deals for business class flights from St. Augustine to Seattle?

Yes. Cheapflights offers flight deals from St. Augustine to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Cheap Flights from St. Augustine to Seattle

Q: E

Most trusted provider : When it comes to deals on St. Augustine-Seattle flights, Cheapflights users trust Expedia the most. Expedia 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 St. Augustine-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Q: Can I find deals for flights from St. Augustine to Seattle that include hotel bookings?

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

Q: How can I find direct flights from St. Augustine to Seattle?

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

Q: Can I find deals for business class flights from St. Augustine to Seattle?

Yes. Cheapflights offers flight deals from St. Augustine to Seattle 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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Find flight deals from St. Augustine to Seattle

Most accurate provider	Expedia 1 star
Most trusted provider	Expedia 3 stars

Provider with most accurate pricing for St. Augustine Northeast Florida Regional-Seattle/Tacoma Intl flight deals.

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Provider most trusted by Cheapflights users for St. Augustine Northeast Florida Regional-Seattle/Tacoma Intl flights.

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Most accurate provider: When it comes to deals on St. Augustine-Seattle flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on St. Augustine-Seattle flight deals on Cheapflights vs. Expedia <90% of the time. Price accuracy is based on data collected from St. Augustine-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Augustine-Seattle flights, Cheapflights users trust Expedia the most. Expedia 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 St. Augustine-Seattle 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 St. Augustine to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from St. Augustine with our price prediction graph.

UST-SEA

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.

Related info for your journey

Can I find deals for flights from St. Augustine to Seattle that include hotel bookings?
Yes. In addition to deals on St. Augustine to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Augustine to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Augustine to Seattle.
Can I find deals for business class flights from St. Augustine to Seattle?
Yes. Cheapflights offers flight deals from St. Augustine to Seattle 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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Find cheap flights from St. Augustine to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from St. Augustine to Seattle

Most accurate provider

Most trusted provider

Best time to book a flight from St. Augustine to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from St. Augustine with our price prediction graph.

Related info for your journey

Can I find deals for flights from St. Augustine to Seattle that include hotel bookings?

How can I find direct flights from St. Augustine to Seattle?

Can I find deals for business class flights from St. Augustine to Seattle?

Traveling to a place near Seattle?

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 St. Augustine to Seattle

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Complete your trip

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Augustine to Seattle by cabin class

Find flights from St. Augustine to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Augustine and Seattle flights

Browse other St. Augustine and Seattle flight options. Last updated on September 19, 2026.

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Cheap flights from St. Augustine to Seattle (UST - SEA)

Find cheap flights from St. Augustine to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from St. Augustine to Seattle

Most accurate provider

Most trusted provider

Best time to book a flight from St. Augustine to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from St. Augustine with our price prediction graph.

Related info for your journey

Can I find deals for flights from St. Augustine to Seattle that include hotel bookings?

How can I find direct flights from St. Augustine to Seattle?

Can I find deals for business class flights from St. Augustine to Seattle?

Traveling to a place near Seattle?

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 St. Augustine to Seattle

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

Complete your trip

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from St. Augustine to Seattle by cabin class

Find flights from St. Augustine to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Augustine and Seattle flights

Browse other St. Augustine and Seattle flight options. Last updated on September 19, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Seattle

Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 19, 2026.

100% Free

Book with Flexibility

Travel Smart