$657 Cheap Flights from Seattle (SEA) to Iguassu Falls (IGU)

View $657 flight on Wed, Dec 31, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Iguassu Falls (IGU-Foz do Iguacu Intl.)

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Cheap Flights from Seattle to Iguassu Falls (SEA-IGU)

Prices were available within the past 7 days and start at $657 for one-way flights and $563 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 9 - Fri, Sep 26
SEA
Seattle
IGU
Foz do Iguaçu
$563 Roundtrip, found 3 hours ago
$563
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Sep 9 from Seattle to Foz do Iguaçu, returning Fri, Sep 26, priced at $563 found 3 hours ago
United
Mon, Apr 6 - Mon, Apr 20
SEA
Seattle
IGU
Foz do Iguaçu
$666 Roundtrip, found 3 hours ago
$666
Roundtrip
found 3 hours ago
Select United flight, departing Mon, Apr 6 from Seattle to Foz do Iguaçu, returning Mon, Apr 20, priced at $666 found 3 hours ago
United
Mon, Apr 6 - Mon, Apr 20
SEA
Seattle
IGU
Foz do Iguaçu
$679 Roundtrip, found 3 hours ago
$679
Roundtrip
found 3 hours ago
Select United flight, departing Mon, Apr 6 from Seattle to Foz do Iguaçu, returning Mon, Apr 20, priced at $679 found 3 hours ago
United
Tue, Apr 7 - Tue, Apr 21
SEA
Seattle
IGU
Foz do Iguaçu
$769 Roundtrip, found 3 hours ago
$769
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Apr 7 from Seattle to Foz do Iguaçu, returning Tue, Apr 21, priced at $769 found 3 hours ago
United
Tue, Apr 7 - Tue, Apr 21
SEA
Seattle
IGU
Foz do Iguaçu
$769 Roundtrip, found 3 hours ago
$769
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Apr 7 from Seattle to Foz do Iguaçu, returning Tue, Apr 21, priced at $769 found 3 hours ago
United
Fri, May 8 - Fri, May 22
SEA
Seattle
IGU
Foz do Iguaçu
$813 Roundtrip, found 3 hours ago
$813
Roundtrip
found 3 hours ago
Select United flight, departing Fri, May 8 from Seattle to Foz do Iguaçu, returning Fri, May 22, priced at $813 found 3 hours ago
Delta
Tue, Apr 7 - Tue, Apr 21
SEA
Seattle
IGU
Foz do Iguaçu
$933 Roundtrip, found 3 hours ago
$933
Roundtrip
found 3 hours ago
Select Delta flight, departing Tue, Apr 7 from Seattle to Foz do Iguaçu, returning Tue, Apr 21, priced at $933 found 3 hours ago
Alaska Airlines
Fri, Apr 10 - Fri, Apr 24
SEA
Seattle
IGU
Foz do Iguaçu
$997 Roundtrip, found 3 hours ago
$997
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Fri, Apr 10 from Seattle to Foz do Iguaçu, returning Fri, Apr 24, priced at $997 found 3 hours ago
LATAM Airlines Group
Tue, Apr 7 - Tue, Apr 21
SEA
Seattle
IGU
Foz do Iguaçu
$1,013 Roundtrip, found 3 hours ago
$1,013
Roundtrip
found 3 hours ago
Select LATAM Airlines Group flight, departing Tue, Apr 7 from Seattle to Foz do Iguaçu, returning Tue, Apr 21, priced at $1,013 found 3 hours ago
Air Canada
Tue, Sep 16 - Wed, Sep 24
SEA
Seattle
IGU
Foz do Iguaçu
$1,019 Roundtrip, found 6 days ago
$1,019
Roundtrip
found 6 days ago
Select Air Canada flight, departing Tue, Sep 16 from Seattle to Foz do Iguaçu, returning Wed, Sep 24, priced at $1,019 found 6 days ago
Flights from Seattle (SEA) to Iguassu Falls (IGU)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Foz do Iguacu Intl.
Roundtrip price
$563
Distance
6566 mi

Seattle to Iguassu Falls Flights

The cheapest times to fly from Seattle to Iguassu Falls

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 Seattle to Iguassu Falls are during the month of September. You can find some of the cheapest flights from Seattle to Iguassu Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Iguassu Falls

Sunday is one of the best days to book for cheap flights from Seattle to Iguassu Falls: 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 Seattle to Iguassu Falls

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 Seattle to Iguassu Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $657 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 Seattle to Iguassu Falls 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 Seattle to Iguassu Falls 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 Seattle - Tacoma Intl. Airport (SEA) to Foz do Iguacu Intl. Airport (IGU) cost?
Discover the latest flight deals from SEA to IGU by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from SEA to IGU?
The cheapest flights from SEA to IGU are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from SEA to IGU?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from SEA to IGU. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Foz do Iguacu Intl. Airport (IGU)?
Direct flights from Seattle - Tacoma Intl. Airport (SEA) to Foz do Iguacu Intl. Airport (IGU) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to IGU?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on various factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Foz do Iguacu Intl. Airport (IGU)?
Choose a flight from Seattle - Tacoma Intl. Airport (SEA) to Foz do Iguacu Intl. Airport (IGU) that takes off before 3 PM to reduce the risk of cancellations. Later departures are on average 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 Seattle - Tacoma Intl. Airport (SEA) to Foz do Iguacu Intl. Airport (IGU) last-minute?
Waiting until just before your departure to book a flight from SEA to IGU generally means paying more. While you might find some last-minute deals, they're not always guaranteed. Allow some flexibility in your schedule to boost your chances of landing a bargain.
Is it cheaper to book a SEA to IGU flight and hotel package?
Compared with arranging flights and hotels separately, booking a SEA to IGU flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place takes the hassle out of travel planning. Simply secure your flights and select from our extensive range of stays, then customize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Foz do Iguacu Intl. Airport (IGU)?
You can usually cancel or reschedule your SEA to IGU flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.