$653 Cheap Flights from Sinop (OPS) to Seattle (SEA)

View $653 flight on Thu, Feb 12, 2026Opens in a new window

Popular airlines from Sinop (OPS-Presidente Joao Figueiredo) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Sinop to Seattle (OPS-SEA)

Prices were available within the past 7 days and start at $653 for one-way flights and $1,532 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LATAM Airlines Group
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,532 Roundtrip, found 1 day ago
$1,532
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,532 found 1 day ago
LATAM Airlines Group
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,536 Roundtrip, found 1 day ago
$1,536
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,536 found 1 day ago
LATAM Airlines Group
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,537 Roundtrip, found 1 day ago
$1,537
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,537 found 1 day ago
LATAM Airlines Group
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,540 Roundtrip, found 1 day ago
$1,540
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,540 found 1 day ago
LATAM Airlines Group
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,541 Roundtrip, found 1 day ago
$1,541
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,541 found 1 day ago
LATAM Airlines Group
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,545 Roundtrip, found 1 day ago
$1,545
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,545 found 1 day ago
LATAM Airlines Group
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,546 Roundtrip, found 1 day ago
$1,546
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,546 found 1 day ago
LATAM Airlines Group
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,579 Roundtrip, found 1 day ago
$1,579
Roundtrip
found 1 day ago
Select LATAM Airlines Group flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,579 found 1 day ago
GOL Linhas Aereas S.A.
Thu, Feb 12 - Tue, Feb 17
OPS
Sinop
SEA
Seattle
$1,809 Roundtrip, found 1 day ago
$1,809
Roundtrip
found 1 day ago
Select GOL Linhas Aereas S.A. flight, departing Thu, Feb 12 from Sinop to Seattle, returning Tue, Feb 17, priced at $1,809 found 1 day ago
Flights from Sinop (OPS) to Seattle (SEA)
Origin airport
Presidente Joao Figueiredo
Destination airport
Seattle - Tacoma Intl.
Roundtrip price
$1,532
Distance
5781 mi

Sinop to Seattle Flights

The cheapest times to fly from Sinop to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Sinop to Seattle are during the month of February. You can find some of the cheapest flights from Sinop to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Sinop to Seattle

Sunday is one of the best days to book for cheap flights from Sinop to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Sinop to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Sinop to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $653 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Sinop to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Sinop to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA) cost?
Lock in a cheap one-way flight from $653 or cheap return flight from $1,532 from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA)?
February is the cheapest month to fly from OPS to SEA. Traveling during an off-peak travel window is often the key to finding better fares.
What is the cheapest airline that flies from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest OPS to SEA flight.
How many flights per day from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA)?
There are no daily nonstop flights available from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from OPS to SEA?
Generally you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid potential delays on the Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA) route, travel before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until just before your departure to book a flight from OPS to SEA generally means paying more. Although you may find some last-minute deals, they're not always guaranteed. Keep your travel schedule open to boost your chances of snagging a bargain.
Is it cheaper to book an OPS to SEA flight and hotel package?
You'll typically save money by securing an OPS to SEA flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. After selecting your preferred accommodations and flights, you can add extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Presidente Joao Figueiredo Airport (OPS) to Seattle - Tacoma Intl. Airport (SEA)?
If you reserved your OPS to SEA flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.