IAD - SIN

S$ 617 Find Cheap Flights from Washington Dulles Airport to Singapore

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Singapore departing on 23-9. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Singapore

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Singapore, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Singapore, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest return fare
S$ 1,438
Typical prices: S$ 1,762-S$ 1,479
Qatar Airways
Fri 8-5Sat 23-5
IAD - SIN • 1 stop
Cheapest one-way flight
S$ 332
Typical prices: S$ 894-S$ 1,001
Multiple Airlines
Wed 23-9
IAD - SIN • 2 stops
Top airlines
Cheapest • from S$ 1,438 (return)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Dulles Intl and Singapore. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Cheapest • Avg S$ 888 (return)
Shortest trip • 22h 55m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 26% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 20% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Singapore!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Singapore (IAD-SIN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dulles Intl to Singapore that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Dulles Intl to Singapore

Fri, 8 May - Sat, 23 May
Qatar Airways Logo
21:00 - 09:20
IAD
-
SIN
24h 20m
1 stop
Qatar Airways Logo
01:05 - 18:10
SIN
-
IAD
29h 05m
1 stop
S$ 1,438Qatar Airways
Tue, 2 Jun - Thu, 18 Jun
Etihad Airways Logo
15:10 - 09:40
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
21:00 - 09:45
SIN
-
IAD
24h 45m
1 stop
S$ 1,440Etihad Airways
Wed, 22 Jul - Sun, 2 Aug
Etihad Airways Logo
15:10 - 09:40
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
21:00 - 09:45
SIN
-
IAD
24h 45m
1 stop
S$ 1,442Etihad Airways
Thu, 10 Sep - Wed, 23 Sep
Qatar Airways Logo
21:00 - 10:15
IAD
-
SIN
25h 15m
2 stops
Qatar Airways Logo
03:15 - 15:40
SIN
-
IAD
24h 25m
1 stop
S$ 1,449Qatar Airways
Tue, 8 Sep - Thu, 17 Sep
Air Canada Logo
08:15 - 05:15
IAD
-
SIN
33h 00m
2 stops
Air Canada Logo
07:00 - 07:43
SIN
-
IAD
36h 43m
2 stops
S$ 1,451Air Canada
Tue, 5 May - Sat, 23 May
Qatar Airways Logo
21:00 - 20:25
IAD
-
SIN
35h 25m
2 stops
Qatar Airways Logo
19:40 - 18:20
SIN
-
IAD
34h 40m
1 stop
S$ 1,454Qatar Airways
Sat, 9 May - Fri, 22 May
Multiple Airlines Logo
21:00 - 00:10
IAD
-
SIN
39h 10m
2 stops
Multiple Airlines Logo
19:40 - 18:10
SIN
-
IAD
34h 30m
1 stop
S$ 1,458Multiple Airlines
Tue, 28 Apr - Tue, 19 May
Qatar Airways Logo
21:00 - 18:15
IAD
-
SIN
33h 15m
2 stops
Qatar Airways Logo
21:15 - 18:10
SIN
-
IAD
32h 55m
2 stops
S$ 1,459Qatar Airways
Fri, 1 May - Fri, 8 May
Qatar Airways Logo
21:00 - 10:15
IAD
-
SIN
49h 15m
2 stops
Qatar Airways Logo
13:40 - 18:10
SIN
-
IAD
40h 30m
2 stops
S$ 1,463Qatar Airways
Tue, 29 Sep - Sun, 4 Oct
Turkish Airlines Logo
13:20 - 17:55
IAD
-
SIN
40h 35m
1 stop
Turkish Airlines Logo
23:05 - 11:35
SIN
-
IAD
24h 30m
1 stop
S$ 1,465Turkish Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Singapore flights

Get data-powered insights and trends into flights from Dulles Intl to Singapore to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Washington, D.C. Dulles Intl Airport to Singapore?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Singapore departing in May.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Singapore?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Singapore, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Singapore is April, where tickets cost S$ 1,284 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is S$ 2,466 and S$ 1,871 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Singapore?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Singapore, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Singapore, you should book around 2 weeks before departure, which saves you about 26% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flightS$ 332
Best time to beat the crowds (2% less expensive on average)
Most popular time to fly (52% more expensive on average)
Flight from Washington Dulles Airport to Singapore

When to book flights from Dulles Intl to Singapore

Are your dates flexible? Find out the best times to travel from Dulles Intl to Singapore based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Singapore flights

  • What flight options do I have from Washington Dulles Airport to Singapore?

    You will have at least one layover when flying from Washington Dulles Airport to Singapore. Singapore Airlines, United Airlines, Virgin Atlantic, and British Airways offer flights between the two destinations with a layover in London. Korean Air, Turkish Airlines, Emirates, and Qatar Airways offer connecting flights to Singapore through hub cities such as Seoul, Istanbul, Dubai, and Doha.

  • Which airline flying from Washington Dulles Airport to Singapore is ideal for families traveling with young kids?

    Korean Air offers priority boarding for families with young kids to settle in before other passengers. On long-haul flights, the airline provides baby bassinets for babies under a certain weight and height limit. In addition, Korean Air offers child-friendly meal options and extensive in-flight entertainment, such as movies for kids and TV shows.

  • Which airline is suitable for passengers traveling in a wheelchair?

    When flying with Turkish Airlines, you will be allowed to bring your wheelchair onboard, regardless of whether it is manual or battery-operated. Also, this airline offers wheelchairs on board for ease of moving around if you have limited mobility. Turkish Airlines ensure the comfort of passengers traveling in a wheelchair by assisting at the terminal, during boarding, inside the aircraft cabin, during layovers, and during deplaning.

  • Which airline is ideal to fly with from Washington Dulles Airport to Singapore?

    Virgin Atlantic offers top-notch services to its customers and will be the ideal airline for you to fly from Washington Dulles Airport to Singapore. This airline features comfortable seating, delicious meals, and a wide selection of entertainment options onboard. You are guaranteed a safe, comfortable, and enjoyable trip when you choose this airline.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Singapore?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Singapore was S$ 539 for a one-way ticket and S$ 1,438 for a return.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Singapore?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Singapore?

    oneworld is the only airline alliance operating flights between Washington Dulles Airport and Singapore.

  • Which is the best airline for flights from Washington, D.C. to Singapore, Qatar Airways or JetBlue?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Singapore are Qatar Airways and JetBlue. With an average price for the route of S$ 2,197 and an overall rating of 7.4, Qatar Airways is the most popular choice. JetBlue is also a great choice for the route, with an average price of S$ 2,506 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Singapore?

    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 Dulles Airport to Singapore.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Singapore?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Singapore from Washington Dulles Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Singapore?

    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 Singapore with an airline and back to Washington Dulles Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Singapore?

    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 Singapore from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Singapore

  • Washington Dulles International Airport (IAD) is located approximately 26 miles from Downtown Washington, D.C. and will be the departure airport for your trip to Singapore. Convenient transportation options include taxis, Uber, and Lyft, as well as public transit via Metrorail or Metrobus, connecting downtown to the airport terminal operated by the Washington Metropolitan Area Transit Authority.
  • Hotels near Washington Dulles International Airport that offer complimentary airport shuttle services will be an ideal choice of accommodation if you have an early morning flight from Washington Dulles International Airport to Singapore. We recommend staying at hotels such as Holiday Inn Washington Dulles International Airport, Hyatt Regency Dulles, or Hilton Washington Dulles Airport.
  • Singapore Changi Airport (SIN) will be your arrival airport from Washington Dulles Airport. This airport is about 10 miles from the city center. Taxis are readily available outside the airport, a convenient way to get downtown. Alternatively, the east-west and downtown lines of the metro system offer convenient access to downtown areas like Bugis, Chinatown, and Marina Bay.
  • If you land late at night, booking accommodation at a hotel near Singapore Changi Airport will be ideal. Crowne Plaza Changi Airport, Aerotel Singapore, Village Hotel Changi, Ambassador Transit Hotel, and Capri by Fraser Changi City, Singapore are conveniently close to the airport, and offer complimentary airport shuttle services to guests.
  • Singapore Airlines is focused on achieving zero carbon emissions by 2050 and reducing waste. This airline takes part in programs and initiatives that help promote environmental sustainability by being an active Sustainable Aviation Fuel Users Group member since 2011, and participating in the ICAO Carbon Offsetting and Reduction Scheme for International Aviation.

Reviews of the top airlines flying from Dulles Intl to Singapore

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Singapore. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Singapore? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
Qatar AirwaysOverall score based on 3730 reviews
7.5Boarding
7.3Entertainment
7.3Comfort
7.3Food
7.9Crew
Airline reviews

Extremely uncomfortable seats with very little cushioning, unable to recline enough to sleep comfortably on this 13 hour overnight flight. My body was in pain by the end.

4.0 OkayAnonymous, Feb 2026
MIA - DOH
Read more Qatar Airways reviews

Extremely uncomfortable seats with very little cushioning, unable to recline enough to sleep comfortably on this 13 hour overnight flight. My body was in pain by the end.

When we checked in at the Siem Reap Airport in Cambodia, we were only given three boarding passes and told that we would have to check in with American when we arrived in Boston. This was a source of stress for us. After we landed in Boston, we had a long passage from Terminal E to Terminal B (American Airline ticketing counter). Because the electronic ticketing kiosks for check-in would not recognize our Confirmation Code, we had to wait for an hour in a long line where only two AA reps were taking care of Special Services passengers. In many years of both business and recreational travel, I have never had this experience. I would expect more from AA being in partnership with other airlines to do a better job with this.

Our experience on the Doha to Hyderabad segment was extremely stressful due to prolonged delays and a lack of clear communication from the airline. We were traveling as a family, including children, and the uncertainty around timing and next steps caused significant distress. There was very little proactive information provided during the delay, and we were not given clear written explanations about what was happening or how long it might take. This made it difficult to manage the situation, especially while caring for children in a transit environment. In addition, one member of our party was ultimately unable to continue travel, which added to the emotional strain and disruption of the trip. Overall, the experience highlighted gaps in communication, customer care, and handling of unexpected situations. We are sharing this feedback so that future passengers, especially families, are supported with clearer communication and better assistance during irregular operations.

The seat cushions are absolutely lacking, not sure if they know the passengers are traveling for 14 hours straight, but the padding made our back and butt ache like crazy. The entertainment console had its own problems, either the headphone jack wasn't working or the power outlet via usb or ac outlet was not working. Not to mention the seat handles were not adjustable in some planes in the middle or on the aisle. Qatar/Indigo may be operating a very old fleet of planes to make as much profit as possible, but passengers may not be following them for long, should this treatment of its customers continue. Qatar/Indigo, wake up and do it right by your customers, or they may not be your customers anymore.

It would help id flight crew were not rude and showed some courtesy. They were shouting at passengers and yelling instructions as if we were school children at lunch cafeteria!!

All good. Over four hours flight if provided snacks like Qatar Airways would be better

Lobster starter in business class was not good, tough, served cold, and without butter. Movie selection was missing latest releases, did not offer older classic, high quality movies

Food was absolutely pathetic. I wasted so much food which I thought was inedible. I also loathe the inflight entertainment system which has very little content

My entire row did not have power for the full duration of a 14.5 hour flight. Could not charge any devices such as laptop or phones for the entirety of the long flight. The flight attendants tried to remedy the issue by resetting the power, but were not successful. The only other solution provided was to move me to another seat on the plane which was in the middle row. I had paid for a “preferred” seat that was a window seat. This was a downgrade being offered due to the power issue.

Nothing to complain. The staff and flight was good especially the seats which was better compared than the cloth ones on Qatar airways

Entertainment and wifi were very sub-par - audio issues and no wifi

We were delayed and had to circle due to weather and had to divert for fuel. While I understand that you can’t control the weather I would have appreciated knowing that the crew wasn’t going to run out of hours and then having to spend the night in the Raleigh airport.

Messy plane that was falling apart Small screens that didn't work

I was traveling with two small kids and our TV s were the only ones not working. Informed the flight attendant who did nothing about them.

They forced me to check my hand luggage at the gate.

I specifically choose not to check bags to ensure I can proceed directly to ground transportation upon arrival. However, due to a recurring lack of cabin space, I was again forced to gate-check my rolling luggage after going through my luggage to take out electronics and batteries. This practice unilaterally changes the service agreement made at the time of purchase. JetBlue needs to find a better way to manage overhead space that honors the carry-on baggage allowance.

Still hasn’t left. Why are you asking how it was?

Flight was good wish there were more snacks options for such a long flight but stewardesses were very pleasant as was flight crew.

I was denied a plastic fork to eat my food and was told plastic forks are for paying customers who buy Jet Blue’s food. So I had to make a utensil out of a cup so nourish my body. Like a refugee. Because decency is dead.

I was especially impressed without efficiently the crew got passengers on and off. One of the stewards was slightly gruff, I thought. No big deal but that's what I noticed.

Everything you need to know for your flight from Dulles Intl to Singapore

Information on your arrival and departure airports