Cheap flights from Seattle to San Juan from $345

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1 stop
Mon, Jul 28
Seattle SEASan Juan SJU

$345
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2 stops
Wed, Jul 30
Seattle SEASan Juan SJU

$393
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2 stops
Wed, Jul 30
Seattle SEASan Juan SJU

$393
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2 stops
Wed, Jul 30
Seattle SEASan Juan SJU

$393
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1 stop
Wed, Jul 30
Seattle SEASan Juan SJU

$394
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1 stop
Fri, Aug 1
Seattle SEASan Juan SJU

$454
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Prices updated:

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1 stop
Fri, Aug 1 – Wed, Aug 6
Seattle SEASan Juan SJU

$776
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1 stop
Fri, Aug 1 – Wed, Aug 6
Seattle SEASan Juan SJU

$846
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1 stop
Thu, Jul 31 – Mon, Aug 4
Seattle SEASan Juan SJU

$852
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1 stop
Sat, Aug 2 – Wed, Aug 6
Seattle SEASan Juan SJU

$864
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1 stop
Sat, Aug 2 – Wed, Aug 6
Seattle SEASan Juan SJU

$864
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1 stop
Thu, Jul 31 – Mon, Aug 4
Seattle SEASan Juan SJU

$912
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How much do flights to San Juan cost?

Key info about flying to San Juan

Depart from
Seattle–Tacoma International
Arrive to
Luis Muñoz Marín International
Average flights per week
133
Flight distance

Check-in for a flight from Seattle to San Juan

NameCarrier codeIATA CodePassport needed during booking
United AirlinesUALUANo
Alaska AirlinesASAASNo
Hawaiian AirlinesHALHANo

Weather in San Juan

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January27°C22°C
February27°C22°C
March27°C22°C
April28°C23°C
May29°C24°C
June30°C25°C
July30°C25°C
August30°C25°C
September30°C25°C
October29°C25°C
November28°C24°C
December27°C23°C
Hottest Month
30°C
August
Coldest month
22°C
February
Sunny days
251
days per year

14 day forecast

Saturday
5 Jul
31°C27°C
12 Jul
30°C25°C
Sunday
6 Jul
80%
29°C26°C
13 Jul
88%
29°C25°C
Monday
7 Jul
31°C26°C
14 Jul
83%
30°C25°C
Tuesday
8 Jul
88%
30°C25°C
15 Jul
69%
30°C25°C
Wednesday
9 Jul
88%
30°C25°C
16 Jul
87%
30°C24°C
Thursday
10 Jul
80%
30°C25°C
17 Jul
86%
30°C25°C
Friday
11 Jul
86%
30°C25°C
18 Jul
77%
30°C25°C
Travelers usually depart from Seattle–Tacoma International, Boeing Field, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to San Juan. The most popular airlines for this route are United Airlines, Alaska Airlines, and Hawaiian Airlines. Seattle and San Juan have 133 direct flights per week.

Frequently asked questions

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Flights from Seattle

Flights to San Juan

Popular routes

The nearest countries with flights to San Juan

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Other destination countries from Seattle

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