Cheap flights from Seattle, WA to Vientiane, Laos

Flights starting at £502. Choose between Alaska Airlines, Thai AirAsia, or Lao Airlines to find the best price.

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Travelers usually depart from Seattle–Tacoma International, or Kenmore Air Harbor Seaplane Base when they travel from Seattle to Vientiane. The most popular airlines for this route are Alaska Airlines, Thai AirAsia, Lao Airlines, Thai Airways, and Asiana Airlines. Seattle and Vientiane have 323 direct flights per week.

Check-in for a flight from Seattle to Vientiane

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Alaska AirlinesASAASNoOpens 24 days before flight
Closes 1 hours before flight
Thai AirAsiaAIQFDNo0
0
Lao AirlinesLAOQVYes0
0
Thai AirwaysTHATGNo0
0
Asiana AirlinesAAROZYes0
0

Weather in Vientiane

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January28°C17°C
February32°C20°C
March35°C23°C
April35°C25°C
May34°C25°C
June31°C25°C
July30°C24°C
August30°C24°C
September30°C23°C
October30°C22°C
November30°C20°C
December28°C17°C
Hottest Month
35°C
April
Coldest month
17°C
January
Sunny days
237
days per year

14 day forecast

Saturday
6 Apr
43°C30°C
13 Apr
39°C26°C
Sunday
7 Apr
43°C31°C
14 Apr
40°C28°C
Monday
8 Apr
58%
42°C29°C
15 Apr
40°C29°C
Tuesday
9 Apr
86%
40°C24°C
16 Apr
42°C30°C
Wednesday
10 Apr
86%
33°C24°C
17 Apr
85%
43°C31°C
Thursday
11 Apr
88%
35°C25°C
18 Apr
61%
42°C29°C
Friday
12 Apr
70%
38°C25°C
19 Apr
42°C27°C

Frequently asked questions

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What time do nonstop (direct) flights between Seattle and Vientiane arrive?
What time do flights between Seattle and Vientiane depart?
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