Dulles (IAD) to Bangkok (BKK) is 14,160 km in a straight line, the equivalent of about 18h 12m in the air; we have not seen a nonstop fare on this pair. The lowest one-way fare seen recently was $356 with Air Premia (1 stop), departing 6 Dec 2026 — as of 8 Oct 2026.

Check fares, see which airlines fly this route, and sort out airports, visas, and what to do at the destination — all before you book.

Plan your trip

See today's IAD–BKK fares on Trip.com

Opens the Dulles to Bangkok route, ready to pick a date.

When you land in Bangkok

Sort the airport transfer and pick a few things to do so you hit the ground running.

Getting out of Bangkok (BKK)

Skip the taxi rank and lock in your fare before you land.

Pre-book a fixed-price transfer

Our pick

Driver waits at arrivals with your name, tracks your flight, and the price you see is the price you pay. English-speaking, fixed price. No surge, no haggling at 2am.

Check transfer prices Renting a car instead? Compare rentals with free cancellation.

Things to do in Bangkok

Lock in a few experiences before you go — the good ones sell out.

Tours, tickets & day trips

Our pick

GetYourGuide has the deepest catalogue for Bangkok and free cancellation on most experiences — book now, decide later.

Browse Bangkok Just need timed-entry attraction tickets in Bangkok? Try Tiqets.Want a private driver-guide? Trip.com Private Tours in Bangkok.

Flights IAD → BKK

Compare live fares from Dulles to Bangkok across 750+ airlines.

Search flights

Or compare fares on Expedia Bundle flight + hotel on Trip.com

Find hotels in Bangkok

Hotels, hostels & more · Trip.com

Search hotels

Why travelers watch this route

Fares seen

The lowest one-way fare seen was $356 with Air Premia (1 stop), departing 6 Dec 2026. Checked 8 Oct 2026 — fares move daily.

Seasonality

Bangkok demand usually strengthens around November – February, which can push fares higher on this corridor.

Who flies it

We have not confirmed a nonstop carrier on IAD–BKK; most travellers connect through a hub.

Airlines flying Dulles to Bangkok

We have not confirmed which airlines fly IAD–BKK nonstop. Search the route to see every carrier selling it today, including connections.

Best time to fly to Bangkok

Based on weather and travel conditions in Thailand

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Best monthsGoodAvoid if possible

The cool, dry season (November–February) is ideal — sunny skies, low humidity, and comfortable temperatures around 25–30°C. The monsoon (May–October) brings heavy rain especially in the south.

Peak season: November – February

Direct & Connecting Flights

We have not seen a nonstop fare between Dulles (IAD) and Bangkok (BKK), so most itineraries connect through a hub.

Fares & Price Guide

The lowest one-way fare seen on IAD–BKK was $356 USD (1 stop) as of 8 Oct 2026. Set a fare alert to be told when it drops.

About Bangkok, Thailand

Flights arrive at Suvarnabhumi Airport (BKK). Best visited during November – February. See the destination guide for hotels, visa requirements and travel tips.

Plan this route beyond the fare

Use the wider AirConnect network to move from a route check into airports, airlines, visa, and trip planning.

Search IAD → BKK

See current Dulles to Bangkok fares on Trip.com.

Airport Guides

Check terminals, transport and arrival details for IAD and BKK.

Airline Route Maps

Explore the networks of airlines flying from Dulles and Bangkok.

Bangkok Planning

Turn this flight route into a full trip with destination, hotel and activity planning.

Price Alerts

Track fare drops on IAD–BKK and related city pairs.

Visa Guides

Check entry rules before booking flights from Dulles to Thailand.

Explore related route clusters

More routes in this part of the world.

USA routes

Browse more routes from the Dulles side of this corridor.

Thailand routes

See how Bangkok connects into its wider route market.

All routes A–Z

Explore more city-pair corridors across the wider AirConnect network.

Frequently asked questions — Dulles to Bangkok flights

How long is the flight from Dulles to Bangkok?

Dulles (IAD) and Bangkok (BKK) are 14,160 km apart, about 18h 12m of flying time. We have not seen a nonstop fare on this pair, so expect to connect — the cheapest itinerary seen had 1 stop, which adds to the total journey time.

How far is Dulles from Bangkok by air?

The great-circle distance between Washington Dulles International Airport and Suvarnabhumi Airport is 14,160 km (8,799 miles), a ultra long-haul route.

How much does a flight from Dulles to Bangkok cost?

The lowest one-way fare seen recently on IAD–BKK was $356 USD with Air Premia (1 stop), departing 6 Dec 2026, found in fare searches as of 8 Oct 2026. Fares change constantly and depend on the date, so check the current price before booking.

Do I need a visa to travel from Dulles to Thailand?

It depends on your passport. Some nationalities can enter Thailand visa-free or get a visa on arrival; others must apply in advance. Use AirConnect's Visa Checker to see the rules for your passport.

What is the best time to visit Bangkok?

Sources: fares from Travelpayouts flight-search data, seen 8 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.

Ready to book IAD–BKK?

Set a fare alert, check your visa, or search flights now.

🔔 Fare alert for IAD–BKK 🌍 Check visa requirements ⚡ Connection risk checker