$748 Cheap Flights from Seattle (SEA) to Iguazu (IGR)

View $748 flight on Tue, Dec 9, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Iguazu (IGR-Cataratas del Iguazu Intl.)

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Cheap Flights from Seattle to Iguazu (SEA-IGR)

Prices were available within the past 7 days and start at $748 for one-way flights and $1,154 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 23 - Thu, Oct 9
SEA
Seattle
IGR
Puerto Iguazú
$1,154 Roundtrip, found 5 days ago
$1,154
Roundtrip
found 5 days ago
Select United flight, departing Tue, Sep 23 from Seattle to Puerto Iguazú, returning Thu, Oct 9, priced at $1,154 found 5 days ago
United
Mon, Sep 22 - Thu, Oct 9
SEA
Seattle
IGR
Puerto Iguazú
$1,168 Roundtrip, found 5 days ago
$1,168
Roundtrip
found 5 days ago
Select United flight, departing Mon, Sep 22 from Seattle to Puerto Iguazú, returning Thu, Oct 9, priced at $1,168 found 5 days ago
United
Sun, Sep 28 - Wed, Oct 15
SEA
Seattle
IGR
Puerto Iguazú
$1,179 Roundtrip, found 5 days ago
$1,179
Roundtrip
found 5 days ago
Select United flight, departing Sun, Sep 28 from Seattle to Puerto Iguazú, returning Wed, Oct 15, priced at $1,179 found 5 days ago
United
Mon, Sep 22 - Sat, Oct 4
SEA
Seattle
IGR
Puerto Iguazú
$1,193 Roundtrip, found 5 days ago
$1,193
Roundtrip
found 5 days ago
Select United flight, departing Mon, Sep 22 from Seattle to Puerto Iguazú, returning Sat, Oct 4, priced at $1,193 found 5 days ago
United
Mon, Sep 1 - Thu, Sep 18
SEA
Seattle
IGR
Puerto Iguazú
$1,304 Roundtrip, found 5 days ago
$1,304
Roundtrip
found 5 days ago
Select United flight, departing Mon, Sep 1 from Seattle to Puerto Iguazú, returning Thu, Sep 18, priced at $1,304 found 5 days ago
United
Sun, Aug 31 - Thu, Sep 18
SEA
Seattle
IGR
Puerto Iguazú
$1,320 Roundtrip, found 5 days ago
$1,320
Roundtrip
found 5 days ago
Select United flight, departing Sun, Aug 31 from Seattle to Puerto Iguazú, returning Thu, Sep 18, priced at $1,320 found 5 days ago
United
Mon, Sep 29 - Wed, Oct 15
SEA
Seattle
IGR
Puerto Iguazú
$1,334 Roundtrip, found 5 days ago
$1,334
Roundtrip
found 5 days ago
Select United flight, departing Mon, Sep 29 from Seattle to Puerto Iguazú, returning Wed, Oct 15, priced at $1,334 found 5 days ago
United
Thu, Sep 4 - Thu, Sep 18
SEA
Seattle
IGR
Puerto Iguazú
$1,345 Roundtrip, found 5 days ago
$1,345
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 4 from Seattle to Puerto Iguazú, returning Thu, Sep 18, priced at $1,345 found 5 days ago
United
Mon, Sep 22 - Tue, Oct 7
SEA
Seattle
IGR
Puerto Iguazú
$1,348 Roundtrip, found 5 days ago
$1,348
Roundtrip
found 5 days ago
Select United flight, departing Mon, Sep 22 from Seattle to Puerto Iguazú, returning Tue, Oct 7, priced at $1,348 found 5 days ago
United
Sun, Sep 21 - Thu, Oct 9
SEA
Seattle
IGR
Puerto Iguazú
$1,352 Roundtrip, found 5 days ago
$1,352
Roundtrip
found 5 days ago
Select United flight, departing Sun, Sep 21 from Seattle to Puerto Iguazú, returning Thu, Oct 9, priced at $1,352 found 5 days ago

Alternative airports near Puerto Iguazú

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Foz do Iguacu Intl. IGU. Cheapest and Closest option available. Average driving time to city center is 15 minutes. Flights from $934
IGU
Foz do Iguacu Intl.
CheapestClosest
Average driving time to city center15 min
Flights from $934
Flights from Seattle (SEA) to Iguazu (IGR)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Cataratas del Iguazu Intl.
Roundtrip price
$1,153
Distance
6574 mi

Seattle to Iguazu Flights

The cheapest times to fly from Seattle to Iguazu

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

 

The best time to book a flight from Seattle to Iguazu

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

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 Iguazu in 2025. You can also book with separate airlines for your outbound and return journeys, from $748 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 Iguazu 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 Iguazu 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 Cataratas del Iguazu Intl. Airport (IGR) cost?
Get a cheap one-way flight from $748 or cheap return flight from $1,154 from Seattle - Tacoma Intl. Airport (SEA) to Cataratas del Iguazu Intl. Airport (IGR) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Cataratas del Iguazu Intl. Airport (IGR)?
September is the least expensive month to fly from SEA to IGR. Traveling during quieter months is often the key to finding better deals on flights.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Cataratas del Iguazu Intl. Airport (IGR)?
To find the cheapest airline that'll fly you from SEA to IGR, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Cataratas del Iguazu Intl. Airport (IGR)?
You'll need to take a flight with a layover if you're traveling from Seattle - Tacoma Intl. Airport (SEA) to Cataratas del Iguazu Intl. Airport (IGR). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from SEA to IGR?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*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 Cataratas del Iguazu Intl. Airport (IGR)?
To reach Cataratas del Iguazu Intl. Airport (IGR) on time, book a flight that leaves Seattle - Tacoma Intl. Airport (SEA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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 Cataratas del Iguazu Intl. Airport (IGR) last-minute?
Last-minute bookings from SEA to IGR are generally more expensive. To lock in the best prices, start looking for flights as soon as possible. That being said, if you can play around with your travel dates, you may land a cheap ticket just before your departure.
Is it cheaper to book a SEA to IGR flight and hotel package?
You'll generally save money by booking a SEA to IGR flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After choosing your ideal accommodations and flights, consider adding extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Cataratas del Iguazu Intl. Airport (IGR)?
Typically, you can modify or cancel your SEA to IGR flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further information, go to our Customer Service portal.

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*Available to One Key members.