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Cheap Flights from Seattle to Koh Samui, TH, Thailand - SEA to USM

Popular flights from Seattle to Koh Samui

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Thai Airways
Departure Date Return Date Lowest Price
Aug 16, 2016 Aug 30, 2016 $2,814
United Airlines
Departure Date Return Date Lowest Price
Jul 7, 2016 Jul 11, 2016 $2,096

How Much Does it Cost to Fly from Seattle to Koh Samui (SEA to USM)?

We have collected flight cost data from across the web for travel from Seattle to Koh Samui, and have found the average flight price for this trip to be $3,587.

When Can I Buy the Cheapest Flight from Seattle to Koh Samui (SEA to USM)?

Airlines can adjust prices for plane tickets from Seattle to Koh Samui based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

Airports for Your Route

These pages contain information about the major airports in Seattle and Koh Samui, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap International Flights from Seattle - SEA

FlightsAirlineLowest Price
Seattle to Bangkok American, Alaska, Hawaiian, Bangkok, Thai, United $833
Seattle to Phuket American, Alaska, Hawaiian, Bangkok, Thai, United $1,459
Seattle to Singapore American, Alaska, JetBlue, Hawaiian, Singapore, United $791
Seattle to Ho Chi Minh City American, Alaska, Hawaiian, United, Vietnam $695
Seattle to Kuala Lumpur American, Alaska, Hawaiian, Malaysia, United $755
Seattle to Hong Kong American, Alaska, JetBlue, Cathay, Hawaiian, Hong Kong, United $688
Seattle to Phnom Penh American, Alaska, Hawaiian, United $911
Seattle to Manila American, Alaska, Hawaiian, Philippine, United $761
Seattle to Delhi Jet Airways, American, Air India, Alaska, Hawaiian, United, KLM*, Great Lakes $953
Seattle to Tokyo American, Alaska, Hawaiian, JAL, All Nippon, United, Island Air $875
Seattle to Beijing Sichuan, American, Alaska, Air China, China Southern, Hawaiian, Hainan, China Eastern, United $507
Seattle to Shanghai Sichuan, American, Alaska, Air China, China Southern, Hawaiian, Hainan, Xiamen, China Eastern, United, Shenzhen $489

Cheap International Flights to Koh Samui - USM

FlightsAirlineLowest Price
Vancouver to Koh Samui Air Canada, Bangkok, Thai $2,261
Vancouver to Bangkok Air Canada, Bangkok, Thai $938
Portland to Bangkok American, Alaska, Hawaiian, Bangkok, Thai, United $835
Vancouver to Phuket Air Canada, Bangkok, Thai $1,060
Vancouver to Kuala Lumpur Air Canada, Malaysia $924
Vancouver to Singapore Air Canada, Singapore $931
Portland to Phuket American, Alaska, Hawaiian, Bangkok, Thai, United $1,388
Vancouver to Shanghai Sichuan, Air Canada, Air China, China Southern, Hainan, Xiamen, China Eastern, WestJet $456
Victoria to Bangkok Air Canada, Thai $1,265
Vancouver to Krabi Air Canada, Bangkok, Thai Check Dates
Vancouver to Ho Chi Minh City Air Canada, Vietnam, WestJet $653
Vancouver to Hong Kong Air Canada, Cathay, Hong Kong, Dragonair, WestJet $565
Portland to Ho Chi Minh City American, Alaska, Hawaiian, United, Vietnam $861
Vancouver to Beijing Sichuan, Air Canada, Air China, China Southern, Hainan, Xiamen, China Eastern, WestJet, Shenzhen $456
Portland to Singapore American, Alaska, JetBlue, Hawaiian, Singapore, United $891
Vancouver to Phnom Penh Air Canada $1,063
Vancouver to Penang Air Canada, Malaysia $1,350
Vancouver to Jakarta Air Canada, Garuda $920
Cheap Flights from Seattle to Koh Samui, TH, Thailand, from $2,096 Round trip from SEA to USM