How does KAYAK find such low prices on flights from Southeast Asia to Washington, D.C.?

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 Southeast Asia to Washington, D.C.. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Southeast Asia to Washington, D.C.?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Southeast Asia is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Southeast Asia to Washington, D.C.?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington, D.C. with an airline and back to Southeast Asia with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Southeast Asia to Washington, D.C.?

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 Washington, D.C. from Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

S$ 573 CHEAP FLIGHTS from Southeast Asia to Washington, D.C.

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Cheap Flights from Southeast Asia to Washington, D.C.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent return flight deals from Southeast Asia to Washington, D.C.

Mon, 8 Jun - Tue, 23 Jun

17:55 - 19:30

SIN

IAD

37h 35m

1 stop

23:00 - 21:55

IAD

SIN

34h 55m

1 stop

S$ 1,285Air China

Mon, 2 Nov - Tue, 8 Dec

23:55 - 18:30

SIN

IAD

31h 35m

1 stop

22:00 - 06:50

IAD

SIN

43h 50m

1 stop

S$ 1,331Air China

Sat, 29 Aug - Sat, 31 Oct

15:45 - 11:52

BKK

IAD

31h 07m

3 stops

22:10 - 11:25

IAD

BKK

50h 15m

2 stops

S$ 1,419United Airlines

Sun, 6 Sep - Sun, 4 Oct

02:30 - 15:40

BKK

IAD

24h 10m

1 stop

21:00 - 06:20

IAD

BKK

22h 20m

1 stop

S$ 1,428Qatar Airways

Sat, 10 Oct - Thu, 22 Oct

09:35 - 05:30

BKK

IAD

30h 55m

2 stops

08:30 - 23:55

IAD

BKK

28h 25m

2 stops

S$ 1,447United Airlines

Mon, 25 May - Tue, 30 Jun

01:00 - 18:20

BKK

IAD

28h 20m

1 stop

11:05 - 19:25

IAD

BKK

21h 20m

1 stop

S$ 1,457Multiple Airlines

Sat, 24 Oct - Sat, 14 Nov

03:00 - 16:55

BKK

IAD

24h 55m

1 stop

20:05 - 06:15

IAD

BKK

22h 10m

1 stop

S$ 1,459Qatar Airways

Wed, 27 May - Thu, 2 Jul

01:00 - 18:20

BKK

IAD

28h 20m

1 stop

11:05 - 07:15

IAD

BKK

33h 10m

1 stop

S$ 1,461Multiple Airlines

Mon, 14 Sep - Sat, 19 Sep

01:50 - 15:40

BKK

IAD

24h 50m

1 stop

18:50 - 13:40

IAD

BKK

31h 50m

1 stop

S$ 1,462SAUDIA

Mon, 14 Sep - Sat, 19 Sep

01:50 - 15:40

BKK

IAD

24h 50m

1 stop

18:50 - 13:40

IAD

BKK

31h 50m

1 stop

S$ 1,463SAUDIA

Useful Info

Low season	February
High season	December
Cheapest flight	S$ 573

Best time to beat the crowds (1% less expensive on average)

Flight from Singapore to Washington Dulles Airport

How does KAYAK find such low prices on flights from Southeast Asia to Washington, D.C.?
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 Southeast Asia to Washington, D.C..
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Southeast Asia to Washington, D.C.?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Southeast Asia 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 Southeast Asia to Washington, D.C.?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington, D.C. with an airline and back to Southeast Asia with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Southeast Asia to Washington, D.C.?
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 Washington, D.C. from Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

7.4

United AirlinesOverall score based on 9711 reviews

7.7Boarding

7.1Entertainment

7.3Comfort

8.1Crew

6.6Food

Airline reviews

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

10.0 ExcellentAnonymous, May 2026

TPA - IAD

Read more United Airlines reviews

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Terrific in every way. On time, professional staff, multiple movie options to select, great food and drink.

My bags were misplaced!!! Im in a foreign country with no bags

I liked that it was on time, however, the food was not good.

Offered to check carry on to final destination. This is the most absurd thing in the world. I'm carrying on because I need what is in the carry-on. I'm okay with picking up at next stop but then I will be on much larger plane that can accommodate it. Also, if there is ever a change to your flight. Go to the airport and have the people there fix your ticket. Don't do it over the phone or online with United they screwed us up and ended up with flights for our last leg that took off before our first leg.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

It was okay, the food was good, but after the landing there was not enough time for luggage and security to catch a connection. It was crowded on board.

When I went to check in at the United counter in Barcelona, Spain I had 2 different menat 2 different times in United uniforms (standing around with a couple other employees) ask me if I was traveling alone. The one man asked me 3 different ways if I was traveling alone. I am, 68 yeaers old and have all my faculties. I thought it was weird and it made me feel very uncomfortable. What difference does it make if I was traveling alone or with someone? What if I was a recent widow? That would have been horrible. They never gave me a reason why they needed to know who I was traveling with. I was hesitant to question them because I needed to be on that flight.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Oxon Hill

Arlington

Tysons

Linthicum Heights

Herndon

Bethesda

Chesapeake Beach

Reston

Silver Spring

Alexandria

Rockville

McLean

National Harbor

Everything you need to know for your flight to Washington, D.C.

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Cabin class types available on flights to Southeast Asia

First Class Flights to Washington, D.C.from S$ 2,036

Business Class Flights to Washington, D.C.from S$ 1,270

Premium Economy Class Flights to Washington, D.C.from S$ 1,824

Economy class Flights to Washington, D.C.from S$ 78

S$ 573 Find Cheap Flights from Southeast Asia to Washington, D.C.

KAYAK searches hundreds of travel sites at once for deals on flights to Washington, D.C.

Cheap Flights from Southeast Asia to Washington, D.C.

Recent return flight deals from Southeast Asia to Washington, D.C.

Recent one-way flight deals from Southeast Asia to Washington, D.C.

Recent last minute flight deals from Southeast Asia to Washington, D.C.

Good to know

FAQs for booking flights from Southeast Asia to Washington, D.C.

How does KAYAK find such low prices on flights from Southeast Asia to Washington, D.C.?

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 Southeast Asia to Washington, D.C..

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Southeast Asia to Washington, D.C.?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington, D.C. from Southeast Asia 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 Southeast Asia to Washington, D.C.?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Washington, D.C. with an airline and back to Southeast Asia with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Southeast Asia to Washington, D.C.?

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 Washington, D.C. from Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Southeast Asia to Washington, D.C.

Travelling to a place near Washington, D.C.?

Everything you need to know for your flight to Washington, D.C.

Cabin class types available on flights to Southeast Asia

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