Flights from Seattle to San Juan
CaribbeanYear-round

Cheap Flights from Seattle to San Juan

Track economy fares on the SEA → SJU route and get alerts when prices drop.

From
Seattle
SEA
To
San Juan
SJU

Route Intelligence: Seattle → San Juan

Flight Duration

8 hr 12 min (Direct)

Price Guidance

A good deal is under $250 roundtrip. Standard fare is $350–$500+.

Peak Season

Nov-Mar

Top Airlines

Delta Air Lines, Alaska Airlines

Booking Tip

Book 1-3 months in advance for the best domestic fares.

Track Seattle → San Juan Fares

Set your target price and FlightKitten will scan this route twice daily. The instant economy fares drop below your budget, you'll get an email with the price, airline, and a direct booking link.

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Route Summary: Seattle → San Juan

From
Seattle (SEA)
To
San Juan (SJU)
Duration
8 hr 12 min (Direct)
Airlines
Delta Air Lines, Alaska Airlines
Price Guide
A good deal is under $250 roundtrip. Standard fare is $350–$500+.
Tracking
FlightKitten scans 220+ airlines 2× daily

Airport Ground Transit: Arriving in San Juan

Getting from SJU airport to the city center

Luis Muñoz Marín International Airport (SJU) is approximately 8 miles from downtown San Juan; taxis take about 20-30 minutes

Local Currency
US Dollar (USD)
Transit Tip
Public airport trains & express buses save up to 70% over standard airport taxis.
Fare Savings
Buy contactless transit cards at airport arrival kiosks for discounted multi-day travel.

Economy Baggage & Budget Carrier Guide

Maximize savings on Seattle to San Juan economy airfare

Low-Cost Carriers Serving San Juan

Airlines offering competitive budget fares include Spirit Airlines, JetBlue. Compare their base rates against full-service carriers once baggage fees are factored in.

Carry-On vs. Personal Item Rules

Basic economy fares on transatlantic and domestic routes often restrict free baggage to one small under-seat personal item. Add carry-on bags during initial booking to avoid steep gate-check surcharges.

Seasonality & Fare Calendar: Seattle → San Juan

Historical pricing cycles and best times to book economy seats

Lowest Fares (Off-Peak)
December to April

Off-peak months offer typical fare discounts of 25–40% compared to summer highs.

Peak Season Warning
Nov-Mar

High demand drives fares up. Set your FlightKitten alert 4–6 months in advance for peak travel.

Optimal Booking Window
6 to 12 Weeks Ahead

Airlines typically release promotional inventory 45–90 days before departure on this corridor.

220+
Airlines Monitored
2×
Daily Scanning
AI
Deal Briefings
7-Day
Free Trial
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Prefer business class on this route?

CEOFLIGHTSon board with your vision

Everyone deserves comfort at an affordable price. CEOFLIGHTS Personal Travel Managers find you the best business class fares and handle every detail of your journey.

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Also available: BestBusinessClass.com

Other Routes to San Juan

New York→San JuanLos Angeles→San JuanChicago→San JuanMiami→San JuanSan Francisco→San JuanBoston→San Juan

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Havana
Havana

Route Briefing: Seattle to San Juan

Escaping Seattle for the Caribbean takes 8 hours and 15 minutes across 3,600 miles. Delta, United, and American connect Seattle with Luis Muñoz Marín International Airport (SJU), offering easy flights to Puerto Rico with no passport required for U.S. citizens.

San Juan charms with 500 years of colonial history, vibrant street life, and golden beaches. Explore the massive stone ramparts of El Morro in Old San Juan, stroll along blue cobblestone streets lined with pastel buildings, and savor traditional mofongo with garlic shrimp. Relax on the sands of Condado Beach or take a day trip to hike through the lush rainforest trails and waterfalls of El Yunque National Forest.

Roundtrip economy fares under $240 are a great bargain, with standard fares sitting between $350 to $520. Peak season runs from November through March when winter travelers escape rain and snow. Book 6 to 10 weeks in advance for the best economy pricing.

How much are flights from Seattle to San Juan in 2026?

Flight prices from Seattle (SEA) to San Juan (SJU) vary significantly depending on the season, day of the week, and how far in advance you book. A good deal is under $250 roundtrip. Standard fare is $350–$500+. Popular carriers on this route include Delta Air Lines, Alaska Airlines. FlightKitten eliminates the guesswork by monitoring 220+ airlines twice daily and alerting you the moment economy fares hit your target price.

How does FlightKitten track Seattle to San Juan fares?

FlightKitten is an economy flight price monitoring platform that scans 220+ airlines twice every day for economy fares on the SEA to SJU route. When you set a target price, FlightKitten continuously monitors this route and sends an email alert the moment fares drop below your budget. Each alert includes the exact fare, airline, dates, and an AI-powered briefing that explains whether the deal is genuinely good compared to historical pricing on this route. No more obsessive price checking — set your budget and let FlightKitten do the watching. Learn more about how FlightKitten tracking works.

See our full San Juan destination guide for all available routes. Also popular: Seattle to Aruba.

Pro tip: Book 1-3 months in advance for the best domestic fares.

Looking for business class on this route? CEOFLIGHTS pairs you with a Personal Travel Manager who finds affordable business class fares and handles every detail of your journey. Alternatively, BestBusinessClass.com offers free expert quotes with real savings.