Are direct flights from Seattle to Buenos Aires always the best option?

Direct flights offer convenience and save time by avoiding layovers. However, they are not always the cheapest option. Flights with one or more connections can sometimes be more affordable, especially for longer routes. Consider your priorities for cost versus travel time.

Can flexible travel dates help on Seattle to Buenos Aires flights?

Yes, being flexible with your travel dates can often lead to finding better flight deals. Prices can vary significantly depending on the day of the week, time of year, or specific holidays. Shifting your travel by just a few days may result in noticeable savings.

What extra costs should I check before booking Seattle to Buenos Aires flights?

Before booking, always check for potential extra costs such as baggage fees, seat selection charges, and in-flight services. Some airlines may also charge for printing boarding passes at the airport. Factor these into your total travel budget to avoid surprises.

Flights From Seattle

To Buenos Aires

Cheap Flights from Seattle to Buenos Aires

Browse current best options from Seattle. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Seattle

RatePunk searches hundreds of travel sites at once for deals on flights to Buenos Aires

Prices updated 7 days ago

483 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated Oct 26, 2026.)

Today’s best flight deals from Seattle to Buenos Aires

Explore current cheapest deals departing from Seattle to Buenos Aires

2026-11-23 – 2026-12-01
SEA - Buenos Aires
79% AI deal score
$1,094
$958
Round trip
2026-11-23 – 2026-12-03
SEA - Buenos Aires
78% AI deal score
$1,085
$981
Round trip
2026-12-05 – 2026-12-10
SEA - Buenos Aires
81% AI deal score
$1,222
$1,002
Round trip
2026-11-24 – 2026-12-01
SEA - Buenos Aires
79% AI deal score
$1,118
$1,009
Round trip
2026-11-23 – 2026-12-07
SEA - Buenos Aires
77% AI deal score
$1,079
$1,009
Round trip
2026-12-02 – 2026-12-07
SEA - Buenos Aires
86% AI deal score
$1,304
$1,009
Round trip
2026-11-23 – 2026-12-10
SEA - Buenos Aires
77% AI deal score
$1,071
$1,015
Round trip
2026-12-02 – 2026-12-10
SEA - Buenos Aires
81% AI deal score
$1,233
$1,015
Round trip
2026-12-04 – 2026-12-10
SEA - Buenos Aires
79% AI deal score
$1,190
$1,032
Round trip
2027-01-04 – 2027-01-20
SEA - Buenos Aires
74% AI deal score
$1,044
$1,104
Round trip

Seattle to Buenos Aires: Overview

Insights for flights from Seattle to Buenos Aires

For travelers looking for cheap flights from Seattle to Buenos Aires, the most affordable month to fly is August, with a median fare of $1253. Following closely, September offers a median fare of $1396, and October presents options around $1399, making these months generally more economical for this route.

Fares for flights from Seattle to Buenos Aires typically range from $1291–$1647, with a median price of $1448. Right now, current fares are above the typical level for this route. Currently, 0% of recent fares are classified as a good price, indicating that finding exceptional value may require careful timing and monitoring.

When flying from Seattle to Buenos Aires, most itineraries connect at least once, as 0% of recent fares were for non-stop flights. For connecting itineraries, the typical number of connections is 3, which is important to consider when planning your journey.

A typical journey from Seattle to Buenos Aires, including connections, takes approximately 25h 25m. This duration reflects the long-haul nature of the route and the necessity of multiple stopovers.

The distance between Seattle and Buenos Aires is approximately 11,130 kilometers, classifying this as a long-haul international journey. This significant distance contributes to the extended flight times and the common requirement for connecting flights.

How much is a round trip from Seattle to Buenos Aires

Regular price: $969 - $1,665

Prices for flights from Seattle to Buenos Aires are currently below the regular range.

The regular price range for flights from Seattle to Buenos Aires is typically between $969 and $1665. The current lowest deal is $959 with Frontier Airlines for travel from Nov 23 to Dec 1.

now $959

Low $969

High $1,665

The cheapest time to fly from Seattle to Buenos Aires

The cheapest month to fly from Seattle to Buenos Aires is August, with a median price of $1221. The most expensive month is January, with a median price of $1683. Prices are generally lower from August to November.

August

Cheapest

Flights from $1,221

January

Most Expensive

Flights from $1,683

Jan

Feb

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Buenos Aires

Alaska Airlines, Inc.

LATAM Chile

Frontier Airlines

Aerolíneas Argentinas

Last-minute flights going from Seattle to Buenos Aires

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc.

$1,079

$1,118

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,067

$1,218

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,073

$1,239

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,094

$1,240

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,091

$1,240

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,074

$1,248

One-way

Biggest price drops on these dates for flights from Seattle to Buenos Aires

7 nights

Dec 10 - Dec 17

$1,264 → $1,211

2 nights

Dec 8 - Dec 10

$1,333 → $1,314

2 nights

Dec 2 - Dec 4

$1,337 → $1,327

3 nights

Dec 8 - Dec 11

$1,322 → $1,314

Popular Airports to fly from Seattle to Buenos Aires

Seattle - Buenos Aires route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Seattle to Buenos Aires are above the typical level for this route.

📅 Best time to fly

August is historically cheapest at $1253

Historically, August is the cheapest month to fly from Seattle to Buenos Aires, with a median price of $1253.

⏱️ Flight duration

Connecting flights typically take 25h 25m

Connecting flights from Seattle to Buenos Aires typically have a median duration of 25h 25m.

✈️ Airlines & availability

Connecting flights are dominant for this route

This route is dominated by connecting flights, with a median of 3 stopovers when connecting.

🏆 Airline highlight

Frontier Airlines offers deals from $959

Frontier Airlines has offered deals for this route, with prices starting from $959.

🎯 Booking tip

Deals appear regularly

Deals for flights from Seattle to Buenos Aires appear regularly, typically within a 30-day window.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International is a major airport for flights from Seattle to Buenos Aires.

📍 ~18 km from Seattle city center (reachable by car or train).

💸 Flights from ~$1,035

Buenos Aires main airports to arrive at

Aeroparque Jorge Newbery (AEP)

Cheapest

Aeroparque Jorge Newbery is a convenient arrival airport for flights from Seattle to Buenos Aires.

📍 ~6 km from city center (reachable by car)

💸 Flights from ~$1,008

Airports nearby Buenos Aires used as alternative

Carrasco International (MVD)

Carrasco International (MVD) is a major international hub, offering high connectivity for your arrival.

📍 ~205 km from Buenos Aires (reachable by ferry, which adds significant travel time and requires an international border crossing)

💸 Flights from ~$1,058

Business & First Class Flight Deals to Buenos Aires

Discover luxury on the budget with premium cabin class on flights from Seattle to Buenos Aires.

Elite

Best Elite deals to Buenos Aires

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From SEA

Elite

Dec 29

Buenos Aires, Argentina

91% AI deal score

$5,367

$3,763

Save $1,604

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 08

Buenos Aires, Argentina

91% AI deal score

$5,407

$3,910

Save $1,497

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 08

Buenos Aires, Argentina

91% AI deal score

$5,557

$3,990

Save $1,567

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 07

Buenos Aires, Argentina

90% AI deal score

$5,391

$3,910

Save $1,481

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 08

Buenos Aires, Argentina

90% AI deal score

$5,218

$3,931

Save $1,287

Alaska Airlines, Inc., +1

Business Class

From SEA

Elite

Dec 29

Buenos Aires, Argentina

90% AI deal score

$5,367

$3,954

Save $1,413

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 08

Buenos Aires, Argentina

90% AI deal score

$5,398

$3,965

Save $1,433

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 29

Buenos Aires, Argentina

90% AI deal score

$5,367

$3,970

Save $1,397

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 30

Buenos Aires, Argentina

90% AI deal score

$5,367

$3,973

Save $1,394

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 08

Buenos Aires, Argentina

90% AI deal score

$5,287

$3,993

Save $1,294

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 08

Buenos Aires, Argentina

90% AI deal score

$5,397

$4,001

Save $1,396

Aeroméxico, +1

Business Class

From SEA

Elite

Dec 02

Buenos Aires, Argentina

90% AI deal score

$5,398

$4,045

Save $1,353

Alaska Airlines, Inc., +1

Business Class

Frequently Asked Questions About Flights to Buenos Aires

To find more affordable flights, consider being flexible with your travel dates and times. Using flight comparison sites can help you compare options across various airlines and online travel agencies. Setting up price alerts may also notify you of potential fare drops.

Booking flights in advance, often several months ahead, may help you secure better prices. However, prices can fluctuate, so monitoring trends is usually beneficial. Mid-week bookings are sometimes associated with lower fares than weekend bookings.

Comparing nearby airports at both your origin and destination can sometimes reveal more economical flight options. While it may add to your travel time, the potential savings could be significant. Always factor in ground transportation costs and convenience when considering this approach.

Related routes

More routes from Seattle

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Flights to Buenos Aires from other cities

Flights from Salta to Buenos Aires Flights from Salto to Buenos Aires Flights from Salvador to Buenos Aires Flights from San Juan to Buenos Aires Flights from San Miguel de Tucumán to Buenos Aires Flights from Santa Fe to Buenos Aires Flights from Seoul to Buenos Aires Flights from Singapore to Buenos Aires Flights from Sydney to Buenos Aires Flights from Uyuni to Buenos Aires Flights from Venice to Buenos Aires Flights from Vitória, Espírito Santo to Buenos Aires

Seattle to Buenos Aires: Overview

Insights for flights from Seattle to Buenos Aires

How much is a round trip from Seattle to Buenos Aires

Regular price: $969 - $1,665

Prices for flights from Seattle to Buenos Aires are currently below the regular range.

The regular price range for flights from Seattle to Buenos Aires is typically between $969 and $1665. The current lowest deal is $959 with Frontier Airlines for travel from Nov 23 to Dec 1.

now $959

Low $969

High $1,665

The cheapest time to fly from Seattle to Buenos Aires

August

Cheapest

Flights from $1,221

January

Most Expensive

Flights from $1,683

Jan

Feb

Aug

Sep

Oct

Nov

Dec

Direct flights from Seattle to Buenos Aires

Alaska Airlines, Inc.

LATAM Chile

Frontier Airlines

Aerolíneas Argentinas

Last-minute flights going from Seattle to Buenos Aires

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc.

$1,079

$1,118

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,067

$1,218

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,073

$1,239

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,094

$1,240

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,091

$1,240

One-way

Mon, Nov 16

⌛ Last-Minute

SEA - Buenos Aires

Seattle (SEA) - Buenos Aires (EZE)

Alaska Airlines, Inc., Maersk Air

$1,074

$1,248

One-way

Biggest price drops on these dates for flights from Seattle to Buenos Aires

7 nights

Dec 10 - Dec 17

$1,264 → $1,211

2 nights

Dec 8 - Dec 10

$1,333 → $1,314

2 nights

Dec 2 - Dec 4

$1,337 → $1,327

3 nights

Dec 8 - Dec 11

$1,322 → $1,314

Popular Airports to fly from Seattle to Buenos Aires

Seattle - Buenos Aires route insights

💸 Price insights

Recent fares are above the typical level

Recent fares for Seattle to Buenos Aires are above the typical level for this route.

📅 Best time to fly

August is historically cheapest at $1253

Historically, August is the cheapest month to fly from Seattle to Buenos Aires, with a median price of $1253.

⏱️ Flight duration

Connecting flights typically take 25h 25m

Connecting flights from Seattle to Buenos Aires typically have a median duration of 25h 25m.

✈️ Airlines & availability

Connecting flights are dominant for this route

This route is dominated by connecting flights, with a median of 3 stopovers when connecting.

🏆 Airline highlight

Frontier Airlines offers deals from $959

Frontier Airlines has offered deals for this route, with prices starting from $959.

🎯 Booking tip

Deals appear regularly

Deals for flights from Seattle to Buenos Aires appear regularly, typically within a 30-day window.

Seattle main airports to depart from

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International is a major airport for flights from Seattle to Buenos Aires.

📍 ~18 km from Seattle city center (reachable by car or train).

💸 Flights from ~$1,035

Buenos Aires main airports to arrive at

Aeroparque Jorge Newbery (AEP)

Cheapest

Aeroparque Jorge Newbery is a convenient arrival airport for flights from Seattle to Buenos Aires.

📍 ~6 km from city center (reachable by car)

💸 Flights from ~$1,008

Airports nearby Buenos Aires used as alternative

Carrasco International (MVD)

Carrasco International (MVD) is a major international hub, offering high connectivity for your arrival.

Buenos Aires, Argentina

90% AI deal score

$5,398

$4,045

Save $1,353

Alaska Airlines, Inc., +1

Business Class

Frequently Asked Questions About Flights to Buenos Aires

Cheap Flights from Seattle to Buenos Aires

Today’s best flight deals from Seattle to Buenos Aires

Seattle to Buenos Aires: Overview

Insights for flights from Seattle to Buenos Aires

How much is a round trip from Seattle to Buenos Aires

The cheapest time to fly from Seattle to Buenos Aires

Direct flights from Seattle to Buenos Aires

Last-minute flights going from Seattle to Buenos Aires

Biggest price drops on these dates for flights from Seattle to Buenos Aires

Popular Airports to fly from Seattle to Buenos Aires

Seattle - Buenos Aires route insights

Recent fares are above the typical level

August is historically cheapest at $1253

Connecting flights typically take 25h 25m

Connecting flights are dominant for this route

Frontier Airlines offers deals from $959

Deals appear regularly

Seattle main airports to depart from

Buenos Aires main airports to arrive at

Airports nearby Buenos Aires used as alternative

Business & First Class Flight Deals to Buenos Aires

Best Elite deals to Buenos Aires

Dec 29

Dec 08

Dec 08

Dec 07

Dec 08

Dec 29

Dec 08

Dec 29

Dec 30

Dec 08

Dec 08

Dec 02

Frequently Asked Questions About Flights to Buenos Aires

How can I find cheap flights from Seattle to Buenos Aires?

When should I book flights from Seattle to Buenos Aires?

Should I compare nearby airports for flights from Seattle to Buenos Aires?

Are direct flights from Seattle to Buenos Aires always the best option?

Can flexible travel dates help on Seattle to Buenos Aires flights?

What extra costs should I check before booking Seattle to Buenos Aires flights?

Related routes

More routes from Seattle

Flights to Buenos Aires from other cities

Seattle to Buenos Aires: Overview

Insights for flights from Seattle to Buenos Aires

How much is a round trip from Seattle to Buenos Aires

The cheapest time to fly from Seattle to Buenos Aires

Direct flights from Seattle to Buenos Aires

Last-minute flights going from Seattle to Buenos Aires

Biggest price drops on these dates for flights from Seattle to Buenos Aires

Popular Airports to fly from Seattle to Buenos Aires

Seattle - Buenos Aires route insights

Recent fares are above the typical level

August is historically cheapest at $1253

Connecting flights typically take 25h 25m

Connecting flights are dominant for this route

Frontier Airlines offers deals from $959

Deals appear regularly

Seattle main airports to depart from

Buenos Aires main airports to arrive at

Airports nearby Buenos Aires used as alternative

Business & First Class Flight Deals to Buenos Aires

Best Elite deals to Buenos Aires

Dec 29

Dec 08

Dec 08

Dec 07

Dec 08

Dec 29

Dec 08

Dec 29

Dec 30

Dec 08

Dec 08

Dec 02

Frequently Asked Questions About Flights to Buenos Aires

How can I find cheap flights from Seattle to Buenos Aires?

When should I book flights from Seattle to Buenos Aires?

Should I compare nearby airports for flights from Seattle to Buenos Aires?