Cheap Flights from Seattle to San Juan

Cheapest flights from Seattle to San Juan

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Seattle to San Juan. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$146

American Airlines

1 layover

14h 4m

08/29/2026

The cheapest one-way flight from Seattle to San Juan departs on 08/29/2026, is operated by American Airlines and costs $146

Cheapest round trip flight

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There is no information about the cheapest roundtrip flight from Seattle to San Juan

The fastest flight

14h 4m

Fastest flight from Seattle to San Juan takes 14h 4m

Direct flights

No direct flights

There are no direct flights on this route.

Distance

5991km

Timezone difference

4h

The distance between Seattle and San Juan is 5991km (3714 miles). The time difference between Seattle and San Juan is 4h

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from Seattle to San Juan by month

The minimum one-way ticket price from Seattle to San Juan is $146 (August 2026), while the maximum is $234 (November 2026). On average, a ticket costs $196–$441.

August 2026

Lowest price

on average:

$146

November 2026

Highest price

on average:

$234

Avg Price

Price dynamics

Tickets from Seattle to San Juan are getting more expensive each month. From August 2026 to November 2026, the increase reached 60%, with prices now at $234. It's unlikely to get cheaper than the current level.

Cheaper and more expensive periods

The most significant price increase was from August 2026 to November 2026 — up 60%. The best time to fly is August 2026–September 2026, when the average price is $177. In September 2026–November 2026, tickets cost around $221.

Best time to buy

Given the rising prices, it's best not to delay your purchase. Flying in August 2026–September 2026 can save you up to 20% compared to the most expensive months.

Price predictability

Price variation across months on this route is 18.8%. Your choice of departure month significantly affects the total flight cost.

Airlines operating on route

The route Seattle — San Juan is served by several airlines: American Airlines and Frontier Airlines. This gives passengers more freedom in choosing flights. You can consider not only the price but also schedules, baggage policies, and onboard service. Our service compares all offers so you can find tickets from $146 and choose the most convenient option. Thanks to airline competition, you may also find promotional fares or special offers, helping you save even more. Plan your trip in advance and choose the best flights without overpaying.

American Airlines

starting at $146

Frontier Airlines

starting at $208

Non-stop flights from Seattle to San Juan

A non-stop flight is the most convenient and comfortable way to fly from Seattle to San Juan, despite the fact that sometimes flights with transfers can cost significantly less.

There appear to be no non-stop flights from Seattle to San Juan at this time.... Well, or something went wrong on our side and we couldn't find anything

Schedule of direct flights from Seattle to San Juan

There are most likely no direct flights on the Seattle — San Juan route

Seattle airports overview

Boeing Field International Airport

•

BFI

8km

Seattle-Tacoma International Airport

•

SEA

19km

Primary air hub for the Seattle metropolitan area and Puget Sound, offering extensive domestic and international routes, multiple terminals, light rail and shuttle connections, and convenient access to downtown Seattle.

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San Juan airports overview

Isla Grande

•

SIG

1km

Luis Munoz Marin International Airport

•

SJU

12km

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Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

What is the cheapest price for flights from Seattle to San Juan?

The cheapest flight ticket from Seattle to San Juan according to data for the last 48 hours costs $146

When is the best time to buy air tickets on the route Seattle — San Juan?

Often the best time to buy tickets from Seattle to San Juan is 2 months before departure.

When is the cheapest time of year to fly from Seattle to San Juan?

Based on statistics over the past years, the lowest prices for flights from Seattle to San Juan can be found flying in these months: August, September, November.

How long does it take to fly from Seattle to San Juan?

The fastest flights from Seattle to San Juan start from 14 hours 4 minutes in the air.

Which airline can fly direct from Seattle to San Juan?

The following airlines operate direct flights on the route Seattle — San Juan:

Special offers and sales on air tickets from Seattle to San Juan

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from Seattle to San Juan

Alternative routes

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Cheapest one way flight

$146

American Airlines

1 layover

14h 4m

08/29/2026

The cheapest one-way flight from Seattle to San Juan departs on 08/29/2026, is operated by American Airlines and costs $146

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from Seattle to San Juan

The fastest flight