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Find cheap flights from Washington to Thailand from $505

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 8/27. 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
Tue 7/2
Tue 7/9

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In the last 7 days travelers have searched 42,335,261 times on KAYAK, and here is why:

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Good to know

Low season

May

High season

January

Cheapest flight

$505
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly and prices are also 17% lower on average.
Flight from Portland 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

11/17Sun
1 stopPhilippine Airlines
22h 30mSEA-BKK
12/10Tue
1 stopPhilippine Airlines
34h 25mBKK-SEA
$745
11/1Fri
1 stopPhilippine Airlines
22h 30mSEA-BKK
11/23Sat
1 stopPhilippine Airlines
34h 25mBKK-SEA
$773
10/28Mon
1 stopChina Airlines
18h 40mSEA-BKK
11/25Mon
1 stopChina Airlines
30h 30mBKK-SEA
$795
9/9Mon
1 stopChina Airlines
20h 30mSEA-BKK
10/7Mon
1 stopChina Airlines
30h 50mBKK-SEA
$806
11/19Tue
1 stopSingapore Airlines
20h 15mSEA-BKK
1/15Wed
1 stopSingapore Airlines
25h 05mBKK-SEA
$833
10/14Mon
1 stopAsiana Airlines
20h 20mSEA-BKK
11/27Wed
1 stopAsiana Airlines
26h 05mBKK-SEA
$852
11/14Thu
1 stopSingapore Airlines
38h 50mSEA-BKK
11/27Wed
1 stopSingapore Airlines
30h 35mBKK-SEA
$860
10/15Tue
1 stopAsiana Airlines
20h 20mSEA-BKK
11/29Fri
1 stopAsiana Airlines
26h 05mBKK-SEA
$868
9/3Tue
1 stopEVA Air
20h 35mSEA-BKK
10/10Thu
1 stopEVA Air
16h 45mBKK-SEA
$872
8/27Tue
1 stopEVA Air
21h 55mSEA-BKK
11/20Wed
1 stopEVA Air
17h 20mBKK-SEA
$884

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Recent one-way flight deals

8/27Tue
3 stops
34h 30mPDX-BKK
$505
8/27Tue
2 stops
29h 55mPDX-BKK
$507
8/12Mon
1 stopChina Airlines
24h 40mSEA-BKK
$535
8/15Thu
1 stopDelta
20h 50mSEA-BKK
$537
7/30Tue
1 stopJapan Airlines
19h 30mSEA-BKK
$541
8/15Thu
2 stopsDelta
24h 23mSEA-BKK
$542
7/15Mon
2 stopsAmerican Airlines
24h 30mSEA-BKK
$546
7/29Mon
1 stopJapan Airlines
19h 30mSEA-BKK
$549
10/8Tue
2 stopsAmerican Airlines
33h 50mPDX-BKK
$569
7/27Sat
1 stopChina Airlines
18h 05mSEA-BKK
$658

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Last minute flights from Washington to Thailand

Last minute flight, train and bus deals

6/6Thu
multi-stopTurkish Airlines
45h 25mSEA-BKK
6/20Thu
multi-stopTurkish Airlines
31h 55mBKK-SEA
$1,225
6/5Wed
multi-stopTurkish Airlines
30h 45mSEA-BKK
6/7Fri
multi-stopTurkish Airlines
31h 40mBKK-SEA
$1,377
6/5Wed
multi-stop
23h 10mSEA-BKK
6/12Wed
multi-stop
34h 44mBKK-SEA
$1,378
6/4Tue
multi-stop
23h 30mPDX-BKK
6/6Thu
multi-stop
32h 24mBKK-PDX
$1,416
6/6Thu
multi-stopAmerican Airlines
30h 15mSEA-BKK
6/20Thu
multi-stopAmerican Airlines
52h 54mBKK-SEA
$1,531
6/5Wed
multi-stopAmerican Airlines
50h 01mSEA-BKK
6/11Tue
multi-stopAmerican Airlines
59h 29mBKK-SEA
$1,547
6/4Tue
multi-stopSingapore Airlines
19h 45mSEA-BKK
6/6Thu
multi-stopSingapore Airlines
31h 27mBKK-SEA
$1,597
6/5Wed
multi-stopUnited Airlines
27h 25mSEA-BKK
6/15Sat
multi-stopUnited Airlines
29h 11mBKK-SEA
$1,668
6/6Thu
multi-stopUnited Airlines
51h 40mSEA-BKK
6/20Thu
multi-stopUnited Airlines
29h 11mBKK-SEA
$1,688
6/5Wed
multi-stopSingapore Airlines
36h 35mPDX-BKK
6/19Wed
multi-stopSingapore Airlines
41h 42mBKK-PDX
$2,576

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Flights to Thailand

Return flight deals:

Thailand - Washington

Cabin classes: