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Find cheap flights from Washington to Thailand from $428

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington to Thailand departing on 8/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Fri 6/14
Fri 6/21

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In the last 7 days travelers have searched 42,393,389 times on KAYAK, and here is why:

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Good to know

Low season

May

High season

January

Cheapest flight

$428
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Seattle to Bangkok Suvarnabhumi Airport

FAQs for booking flights from Washington to Thailand

  • How does KAYAK find such low prices on flights from Washington to Thailand?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Thailand.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Thailand?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Thailand from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to Thailand?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Thailand with an airline and back to Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Thailand?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Thailand from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Book cheap flights from Washington to Thailand

Recent round-trip flight deals

9/9Mon
1 stopChina Airlines
20h 30mSEA-BKK
10/7Mon
1 stopChina Airlines
30h 50mBKK-SEA
$749
10/22Tue
1 stopSingapore Airlines
40h 55mSEA-HKT
10/30Wed
1 stopSingapore Airlines
28h 15mHKT-SEA
$757
10/30Wed
1 stopPhilippine Airlines
22h 30mSEA-BKK
11/6Wed
1 stopPhilippine Airlines
19h 45mBKK-SEA
$786
10/9Wed
1 stopPhilippine Airlines
22h 35mSEA-BKK
10/30Wed
1 stopPhilippine Airlines
19h 45mBKK-SEA
$797
10/6Sun
1 stopAsiana Airlines
20h 20mSEA-BKK
10/27Sun
1 stopAsiana Airlines
26h 05mBKK-SEA
$838
9/2Mon
1 stopAsiana Airlines
18h 50mSEA-BKK
9/29Sun
1 stopAsiana Airlines
25h 35mBKK-SEA
$852
9/8Sun
1 stopEVA Air
19h 35mSEA-BKK
10/10Thu
1 stopEVA Air
22h 20mBKK-SEA
$860
9/8Sun
1 stopSTARLUX Airlines
24h 55mSEA-BKK
9/25Wed
1 stopSTARLUX Airlines
16h 40mBKK-SEA
$861
11/5Tue
1 stopEVA Air
20h 30mSEA-BKK
11/18Mon
1 stopEVA Air
16h 00mBKK-SEA
$862
8/28Wed
1 stopSTARLUX Airlines
24h 30mSEA-BKK
9/15Sun
1 stopSTARLUX Airlines
16h 40mBKK-SEA
$887

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Recent one-way flight deals

8/18Sun
1 stopSingapore Airlines
19h 45mSEA-BKK
$428
9/10Tue
1 stopChina Airlines
18h 05mSEA-BKK
$453
9/6Fri
1 stopSTARLUX Airlines
20h 15mSEA-BKK
$491
9/4Wed
1 stopSTARLUX Airlines
24h 55mSEA-BKK
$514
8/19Mon
1 stopEVA Air
20h 55mSEA-BKK
$515
7/17Wed
2 stops
30h 05mSEA-BKK
$516
10/7Mon
1 stopEVA Air
32h 00mSEA-BKK
$519
9/4Wed
2 stops
30h 15mSEA-BKK
$538
9/30Mon
2 stopsANA
39h 10mPDX-BKK
$558
11/11Mon
2 stopsANA
38h 40mPDX-BKK
$559

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Last minute flights from Washington to Thailand

Last minute flight, train and bus deals

5/18Sat
multi-stopTurkish Airlines
45h 25mSEA-BKK
5/22Wed
multi-stopTurkish Airlines
31h 40mBKK-SEA
$1,247
5/20Mon
multi-stopTurkish Airlines
45h 25mSEA-BKK
6/7Fri
multi-stopTurkish Airlines
31h 40mBKK-SEA
$1,328
5/20Mon
multi-stop
26h 26mSEA-BKK
6/7Fri
multi-stop
26h 15mBKK-SEA
$1,343
5/16Thu
multi-stopANA
31h 10mSEA-BKK
6/1Sat
multi-stopANA
35h 07mBKK-SEA
$1,368
5/17Fri
multi-stop
34h 50mSEA-BKK
5/22Wed
multi-stop
24h 45mBKK-SEA
$1,426
5/16Thu
multi-stopANA
31h 10mSEA-BKK
6/1Sat
multi-stopANA
35h 07mBKK-SEA
$1,428
5/17Fri
multi-stopSingapore Airlines
46h 00mSEA-BKK
5/23Thu
multi-stopSingapore Airlines
37h 20mBKK-SEA
$1,507
5/20Mon
multi-stopAmerican Airlines
50h 14mSEA-BKK
6/6Thu
multi-stopAmerican Airlines
59h 29mBKK-SEA
$1,547
5/19Sun
multi-stopSingapore Airlines
35h 35mSEA-BKK
6/24Mon
multi-stopSingapore Airlines
30h 42mBKK-SEA
$1,625
5/19Sun
multi-stopAmerican Airlines
39h 50mSEA-BKK
6/7Fri
multi-stopAmerican Airlines
52h 14mBKK-SEA
$1,958

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Flights to Thailand

Return flight deals:

Thailand - Washington

Cabin classes: