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

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Flight deals from Washington Dulles to Bangkok

Looking for a cheap last-minute deal or the best return flight from Washington Dulles to Bangkok? Find the lowest prices on one-way and return tickets right here.

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 February.

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.

Washington D.C. to Bangkok: Flight information

The things to know before you go.
Cheapest flight foundR 6,102
Cheapest month to flyFebruary

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 R 12,802. 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 R 12,802.
As of February 2026, there are no flights flying from Washington Dulles to Bangkok.
The cheapest month to fly from Washington Dulles to Bangkok is usually April.
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 R 12,802.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Washington Dulles Airport to Bangkok on Wednesday, 1 April 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 February, the average temperature is usually around 29°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.

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

  • The timezone in Bangkok is UTC+7. The city is 11 hours ahead of Washington DC, where Washington Dulles International Airport is located.

  • Allow plenty of time to get on your IAD to Bangkok flight. As a rule of thumb, arrive two hours before international departures and an hour ahead for domestic flights.

  • Longer lines at check-in and security are more likely if you're flying during high season, so allow some extra breathing space. A good rule of thumb for peak periods? Get there up to four hours ahead for international flights and two hours for domestic departures.

  • We make it a breeze to book flight tickets from IAD to Bangkok with a stopover. To see your options, deselect 'Direct flights only.' Next, select a flight that has a stop long enough to explore your chosen city. Well-traveled stopover hubs include:

    • London Heathrow Airport (LHR)

    • Indira Gandhi International Airport (DEL)

    • Charles de Gaulle Airport (CDG)

  • IAD is about 40 kilometres from central Washington DC. If you're driving, catching a cab or ride-sharing from the centre, it'll take you 50 minutes or so to get there, depending on traffic conditions. If you're taking public transport, expect the travel time to be around 1 hour 10 minutes.

  • Searching for a hotel close to IAD? If you've booked an early flight from Washington Dulles International Airport to Bangkok, these accommodation options will put you moments from your departure lounge:

  • When it comes to the on-time performance of Washington Dulles International Airport, data shows 74.39% of flights stick to their scheduled arrival time.

  • The address for IAD is 1 Saarinen Circle.

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

  • The best price we've seen for a one-way Washington Dulles International Airport to Bangkok flight is R 6,102. The cheapest price for a return flight is R 12,802. Remember fares can change due to availability at the time of booking.

  • To find cheap flights from IAD to Bangkok, book ahead. Airlines tend to offer lower fares when flights first go on sale.

  • If you're flexible with your trip dates, try using the 'Whole month' tool. It'll show you the lowest price across every month when searching for a Washington Dulles International Airport to Bangkok ticket.

  • You don't need to keep looking every day to find out if fares have dropped when you create a Price Alert. We'll update you when there's an even better deal on cheap flights from IAD to Bangkok.

  • Tailor your trip with filters. Pick your ideal departure and arrival times, total journey duration and airlines. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Washington Dulles International Airport to Bangkok.

Airports in Bangkok

Suvarnabhumi Airport (BKK)

  • Suvarnabhumi Airport (BKK) is around 32 kilometres from the centre of Bangkok. If you're getting a cab or a ride-share, the drive will take roughly 35 minutes.

  • It typically takes 1 hour 5 minutes if you're using public transport.

  • If you're arriving on a late flight from Washington Dulles International Airport to Bangkok, few things beat the convenience of staying close to the terminal. Grab your bags from the carousel and then be showered and snoozing soon after at one of these hotels near BKK:

  • Hit the road running by picking up a Suvarnabhumi Airport rental car. Grab your wheels from Chic Car Rent, asap car hire or Hertz and explore beyond Bangkok's main sights.

  • Lock in the lowest price by reserving your ride from Suvarnabhumi Airport around four weeks before your flight from IAD to Bangkok.

Don Mueang International Airport (DMK)

  • After your flight from Washington Dulles International Airport to Bangkok has hit the tarmac, you can reach the city centre in about 30 minutes by car. Central Bangkok is roughly 27 kilometres from Don Mueang International Airport (DMK).

  • You can expect the journey to take roughly 1 hour 5 minutes on public transport.

  • Hang up the 'Do not disturb' sign and unwind at a hotel near DMK. Here are a few options where you can tuck yourself in after your IAD to Bangkok flight:

  • Forget about inconvenient public transport schedules or waiting in a long cab line. Pick up a Don Mueang International Airport rental car and blaze your own trail. Check out the availability and rates from Chic Car Rent, asap car hire and Hertz.

  • Secure your first choice, not your last resort. Booking your ride from DMK three weeks in advance often means better deals and a bigger choice of vehicles.

Best time to go to Bangkok

  • Before locking in your flights from Washington Dulles International Airport to Bangkok, consider which time of year is best for you. High season in Bangkok offers a lively atmosphere and plenty of activities, while the off-season means you'll get cheaper hotel deals and smaller crowds.

  • Book a Washington Dulles International Airport to Bangkok flight ticket with a departure in April to experience the city during its warmest month. You can expect temperatures to range from 26ºC (79ºF) to 37ºC (99ºF).

  • December sees average temperatures of between 19ºC (66ºF) and 33ºC (91ºF). Look for a cheap ticket from IAD to Bangkok around that time if you'd rather travel in cooler conditions.

More about Bangkok

Explore more of Thailand

  • Udon Thani is just one of the many places in Thailand waiting to be discovered once you've seen Bangkok. Around 467 kilometres away to the north-east, its top attractions include Nong Prajak Public Park, Krom Luang Prachaksinlapakhom Monument and Chinesisches Tor.

  • If you want to check out another major stop in Thailand, consider Nakhon Ratchasima, about 225 kilometres north-east of Bangkok. Art and Culture Centre, Vongchavalitkul University, Wat Pa Salwan (Burapha Chan Chedi) and บ้านสวนเกษตรอินทรีย์ (บ้านสวนในซอย) are among the biggest draws.

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