Cheap flights from Seattle (SEA) to San Juan (SJU)

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The best prices from Seattle to San Juan are usually found in September or August, booked 55 days in advance, depart on a Tuesday or Monday and return on a Saturday

How to find the cheapest flight from
Seattle (SEA) to San Juan (SJU)

All the information you need to plan the best SEA to SJU flight in 2021: compare Seattle to San Juan flight prices with the expected peak season, weather and rainfall in San Juan.
SEA - PR1
Price
$390 - $822
PR1
Temperature
82.4 - 89.6 °F
PR1
Rainfall
1.3 - 5.8 inches

Popular in

December

High demand for flights, 42% potential price rise

Cheapest in

September

Best time to find cheap flights, 18% potential price drop

Round-trip from

$390

From Seattle to San Juan

One-way from

$174

One-way flight from Seattle to San Juan

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Seattle to San Juan?

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to San Juan. Check prices with Cheapflights to find a great deal for your trip.

How far in advance should I book a flight from Seattle to San Juan?

Travelers have found it’s best to book a flight 19 days in advance to save up to 7% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 19 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to San Juan 1-2 weeks in advance for as low as $262, or $281 for flights within the next 24 hours.

What is the cheapest month to fly from Seattle to San Juan?

Our data shows that August tends to be the cheapest month to fly to San Juan from Seattle. Users have commonly found prices around $313 for the month, but tickets can be as low as $121. Due to multiple factors, prepare for potentially higher prices in December.

When is the cheapest time to fly from Seattle to San Juan (SEA - PR1)?

It’s typically best to fly out from Seattle to San Juan at noon. Doing so could potentially save you 35% on the flight price compared to flying in the morning, which is usually more expensive.

Cheap flights from Seattle to San Juan in May, June 2021

The best prices found for SEA to SJU flights for May, June
11 May - 18 May
$234pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
7 May - 15 May
$256pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
8 May - 11 May
$266pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
   
2 STOPS
SEA
Seattle/Tacoma Intl

Seattle to San Juan 2021 flight deals

Cheap flights to San Juan from Seattle found for this year
11 May - 18 May
$234pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
7 May - 15 May
$256pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
8 May - 11 May
$266pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
   
2 STOPS
SEA
Seattle/Tacoma Intl

Last minute flights from Seattle to San Juan

Late deals on round-trip flights to San Juan from Seattle, departing today and this week
11 May - 18 May
$234pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Multiple Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
15 May - 22 May
$285pp
SEA
Seattle/Tacoma Intl
Frontier
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
   
2 STOPS
SEA
Seattle/Tacoma Intl
11 May - 14 May
$288pp
SEA
Seattle/Tacoma Intl
Multiple Airlines
   
2 STOPS
SJU
San Juan Luis Munoz Marin Intl
SJU
San Juan Luis Munoz Marin Intl
Frontier
   
2 STOPS
SEA
Seattle/Tacoma Intl

One-way flights to San Juan from Seattle

The cheapest one-way flights from Seattle to San Juan
9:00 am - 4:54 pm
United Airlines
1 Stop
28h 54m
SEA - SJU
United Airlines
$174
United
9:32 am - 11:45 pm
JetBlue
1 Stop
11h 13m
SEA - SJU
JetBlue
3:15 pm - 11:05 am
Sun Country Air
1 Stop
16h 50m
SEA - SJU
Sun Country Air

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Seattle</span> to <span class="emphasized">San Juan</span> flights.

Flight FAQs

From Seattle to San Juan

Are flight prices decreasing from Seattle to San Juan due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and San Juan for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Seattle/Tacoma Intl to San Juan to control the spread of COVID-19?

Alaska Airlines and Delta are some of the many airlines that have implemented additional safety measures to control the spread of COVID-19. Some of the new policies that have been implemented to accommodate travelers flying from Seattle/Tacoma Intl to San Juan are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

Which airlines flying from Seattle/Tacoma Intl to San Juan have flexible cancellations due to COVID-19?

Some of our airline partners flying from Seattle/Tacoma Intl to San Juan have new flexible policies in place due to COVID-19. American Airlines, United Airlines, and Delta are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

What airport do you fly from for flights from Seattle to San Juan?

Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to San Juan from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to San Juan should be relatively easy as there are 0 daily outbound flights to San Juan from 8 different airlines.

Can I find flights from Seattle to San Juan for under $300 on Cheapflights?

Yes, there are multiple flights from Seattle to San Juan for under $300. The cheapest flight booked recently is on Multiple Airlines for just $234, but on average you can expect to pay $287.

Are there nonstop flights from Seattle to San Juan for under $200 on Cheapflights?

There are no nonstop flights from Seattle to San Juan, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Seattle to San Juan for under $300?

There are currently 20+ open flights from Seattle to San Juan within the next 7 days for less than $300.

Is Seattle weather warmer or cooler than San Juan?

We forecast the temperature to be around the 90 °F's in June, on average. The temperature in San Juan is generally hotter than in Seattle. Book flights in a timely manner in correlation to your departure date.

How long is the flight from Seattle to San Juan?

For as low as $349, United Airlines can have you in San Juan from Seattle in 10h 11m. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Seattle to San Juan round-trip?

Flying on Frontier is currently your cheapest option to San Juan, with prices starting at $279. Additional round-trip tickets that might be worth considering are offered by American Airlines and Spirit Airlines, with the lowest prices starting at $319 and $326, respectively. Frontier is currently priced 41% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Seattle to San Juan one-way?

To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $153. United Airlines flights start at $158 while deals on Spirit Airlines start at $175 one-way.

Destination information for San Juan

Things to know before you go - useful duration and weather info for your trip from Seattle to San Juan.
Today's exchange rate
$1 = $1.00
Average temperature for May in San Juan
87.8 °F
Avg rainfall for May in San Juan
3.6 ″

Airports servicing Seattle

Airports servicing San Juan

San Juan Isla Grande (SIG)

Top 7 airlines flying from Seattle to San Juan

The chart below displays the airlines Cheapflights users traveling from Seattle to San Juan choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
JetBlue
$158 $320 No cancel fee 62%
Spirit Airlines
$248 $488 No cancel fee 65%
Sun Country Air
$226 $491 No cancel fee 83%
United Airlines
$203 $530 No cancel fee 69%
American Airlines
$212 $534 No cancel fee 71%
Delta
$181 $649 No cancel fee N/A
Alaska Airlines
$284 $1,463 No cancel fee 75%
Home Caribbean Puerto Rico San Juan Cheap flights from Seattle to San Juan