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Cheap flights from Washington Dulles to Bangkok

Compare Washington Dulles to Bangkok flight deals

Find the cheapest month or even day of the year to fly to Bangkok

Book the best Bangkok fare with no extra fees

Flight deals from Washington Dulles to Bangkok

Looking for a cheap last-minute deal or the best return flight from Washington Dulles Airport to Bangkok? If you want to travel next month, return fares start from $1,436. Find the lowest prices on one-way and return tickets right here.
Bangkok.$626 per passenger.Departing Sat, 15 Aug.One-way flight with Etihad Airways.Outbound indirect flight with Etihad Airways, departs from Washington Dulles on Sat, 15 Aug, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $626, select.
Bangkok.$629 per passenger.Departing Wed, 7 Oct.One-way flight with Etihad Airways.Outbound indirect flight with Etihad Airways, departs from Washington Dulles on Wed, 7 Oct, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $629, select.
Bangkok.$630 per passenger.Departing Tue, 14 Jul.One-way flight with Etihad Airways.Outbound indirect flight with Etihad Airways, departs from Washington Dulles on Tue, 14 Jul, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $630, select.
Bangkok.$632 per passenger.Departing Tue, 1 Sep.One-way flight with Etihad Airways.Outbound indirect flight with Etihad Airways, departs from Washington Dulles on Tue, 1 Sep, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $632, select.
Bangkok.$660 per passenger.Departing Tue, 6 Apr.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Tue, 6 Apr, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $660, select.
Bangkok.$661 per passenger.Departing Thu, 7 Jan.One-way flight with KLM.Outbound indirect flight with KLM, departs from Washington Dulles on Thu, 7 Jan, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $661, select.
Bangkok.$665 per passenger.Departing Tue, 1 Dec.One-way flight with Air France.Outbound indirect flight with Air France, departs from Washington Dulles on Tue, 1 Dec, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $665, select.
Bangkok.$681 per passenger.Departing Mon, 2 Nov.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Mon, 2 Nov, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $681, select.
Bangkok.$696 per passenger.Departing Mon, 1 Mar.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Mon, 1 Mar, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $696, select.
Bangkok.$699 per passenger.Departing Wed, 3 Feb.One-way flight with Qatar Airways.Outbound indirect flight with Qatar Airways, departs from Washington Dulles on Wed, 3 Feb, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $699, select.
Bangkok.$738 per passenger.Departing Fri, 15 May.One-way flight with Air Premia.Outbound indirect flight with Air Premia, departs from Washington Dulles on Fri, 15 May, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $738, select.
Bangkok.$879 per passenger.Departing Wed, 10 Jun.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Wed, 10 Jun, arriving in Bangkok Suvarnabhumi.Price includes taxes and charges.From $879, select.

Find the cheapest month to fly from Washington Dulles to Bangkok

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington Dulles to Bangkok flights are currently cheapest in August.
May
from $738
Jun
from $879
Jul
from $630
Aug
from $626
Sep
from $632
Oct
from $629
Nov
from $681
Dec
from $665
Jan
from $661
Feb
from $699
Mar
from $696
Apr
from $660

Alternative Washington Dulles to Bangkok routes

Looking for the cheapest, fastest or easiest route from Washington Dulles to Bangkok? You could fly into the following airports instead.

Don Mueang

21km from central Bangkok
Closest
from $705
Search flights

Bangkok Suvarnabhumi

29km from central Bangkok
Cheapest
from $626
Search flights

Washington D.C. to Bangkok: Flight information

The things to know before you go.
Cheapest flight found$626
Cheapest month to flyAugust

Finding cheap flights from Washington Dulles to Bangkok: Frequently asked questions

There are 2 airports in Bangkok: Don Mueang and Bangkok Suvarnabhumi.
The best price we found for a return flight from Washington Dulles to Bangkok is $1,137. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Washington Dulles to Bangkok. But we found flights with one or more stops from $1,137.
As of May 2026, there are no flights flying from Washington Dulles to Bangkok.
The cheapest month to fly from Washington Dulles to Bangkok is usually October.
If you're flying from Washington Dulles Airport, the cheapest airport near Bangkok is Bangkok Suvarnabhumi – which is 28.5 km away from the centre of Bangkok. We've found flights into this airport from $1,137.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Bangkok on Thursday, 8 October 2026.
No airlines currently offer direct flights between Washington Dulles Airport and Bangkok. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Bangkok but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Bangkok is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 30°C. April is typically the warmest month in Bangkok, when it usually averages around 35°C. You can expect the least rain in December. The coldest month is November, with temperatures averaging 22°C. The rainiest month is September.
Currently, Etihad Airways offers the cheapest flight tickets to Bangkok.

Flying from Washington Dulles International Airport (IAD) to Bangkok: what you need to know

  • Washington Dulles International Airport is located in Washington DC. Following the UTC+7 timezone, Bangkok is 12 hours ahead of Washington DC.

  • For stress-free travel, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to board your IAD to Bangkok flight.

  • Travelling during a popular month like June? School holidays and other popular periods can lead to longer queues and delays at security. Play things extra safe and arrive up to four hours before international flights and two hours before a domestic departure.

  • Think about adding a stopover to potentially find a cheaper plane ticket from IAD to Bangkok. All you need to do is deselect 'Direct flights only' during your search. Break up your trip (and maybe save some cash) by stopping at one of these popular airports:

    • Delhi Indira Gandhi International (DEL)

    • London Heathrow Airport (LHR)

    • Paris Charles de Gaulle Airport (CDG)

  • Located around 40 kilometres from central Washington DC, IAD can be reached in about 45 minutes by car, depending on traffic. The journey on public transport will take roughly 1 hour 10 minutes.

  • Planning to catch an early flight from Washington Dulles International Airport to Bangkok? Avoid the last-minute rush to the terminal (and catch some extra z's) by choosing one of these stays close to IAD:

  • 77% of flights that leave from Washington Dulles International Airport arrive at their destination on schedule.

  • The address for IAD is 1 Saarinen Circle.

How to find the cheapest flights from Washington Dulles International Airport (IAD) to Bangkok

  • The lowest price we've seen for a one-way Washington Dulles International Airport to Bangkok flight is $626. The cheapest price for a return flight is $1,137. Keep in mind fares can change due to demand at the time of booking.

  • To pick up cheap flights from IAD to Bangkok, book as early as you can. Airlines generally offer lower prices when flights first go on sale.

  • If you can be flexible with your travel plans, try using the 'Whole month' search tool. It'll find the cheapest price across each month when looking for your Washington Dulles International Airport to Bangkok ticket.

  • You don't need to check every day to see if fares have dropped when you set up a Price Alert. We'll let you know as soon as there's an even better deal on cheap flights from IAD to Bangkok.

  • Choose your preferred departure and arrival times, number of stops and airlines with our filters. Then, sort the results for your flight from Washington Dulles International Airport to Bangkok by 'Cheapest,' 'Fastest' or 'Best.'

Airports in Bangkok

Bangkok Suvarnabhumi International Airport (BKK)

  • Bangkok Suvarnabhumi International Airport (BKK) to the centre of Bangkok takes around 35 minutes by car. The centre is roughly 31 kilometres away.

  • It takes around 35 minutes to get there using public transport.

  • Consider staying in a hotel close to BKK if you're coming in on a late flight from Washington Dulles International Airport to Bangkok. Pick one of these accommodation options and make your first night all about catching up on rest:

  • Reserving your ride from Bangkok Suvarnabhumi International Airport about four weeks in advance of your flight from IAD to Bangkok can help you lock in the best possible rate.

Bangkok Don Mueang International Airport (DMK)

  • Bangkok Don Mueang International Airport (DMK) is roughly 24 kilometres from the centre of Bangkok. Following your flight from Washington Dulles International Airport to Bangkok, it'll take you around 35 minutes to get to the heart of the city in a taxi or ride-share.

  • If you choose to travel on public transport, the ride to the centre takes 1 hour 5 minutes or so.

  • Following your IAD to Bangkok flight, tuck yourself in at a hotel close to DMK. These are some comfortable options that'll help you switch to relaxation mode:

  • Call dibs on the best options. Reserving your ride from DMK three weeks ahead of time often means lower prices and a greater selection of vehicles.

Best time to go to Bangkok

  • February is the busiest month for flights from Washington Dulles International Airport to Bangkok. To steer clear of the crowds, visit Bangkok in May.

  • Before locking in your Washington Dulles International Airport to Bangkok plane ticket, think about the weather you're most comfortable in. April is the warmest month in Bangkok, with temperatures ranging from 26ºC (79ºF) to 37ºC (99ºF).

  • If you like cooler conditions, search for a cheap ticket from IAD to Bangkok in January when temperatures average between 19ºC (66ºF) and 34ºC (93ºF).

More about Bangkok

  • Once you've booked your flight from Washington Dulles International Airport to Bangkok, find a hotel that keeps you close to what you want to see. Make one of these options your base for exploring Bangkok:

  • Wat Phra Kaew and Grand Palace are a couple of popular attractions to add to your Bangkok must-do list. Keep the adventure rolling by checking out Songkran Festival Silom.

Explore more of Thailand

  • You've visited Bangkok, now it's time to discover more of Thailand. Journey about 467 kilometres northeast to Udon Thani to tick off its top sights. From Thai-Chinese Cultural Centre to Wat Pho Chai and Wat Burapa Wanaram, you've got a jam-packed schedule ahead.

  • If you're eager to discover another major stop in Thailand, consider Nakhon Ratchasima, about 225 kilometres northeast of Bangkok. Night Safari Korat, Wat Chai Mongkol and Wat Na Pha That are highlights.

More travel options

Plan the rest of your trip from Washington D.C. to Bangkok

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.