IAD - SIN

S$ 416 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 16-4. 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
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Everything you should know

Cheapest return fare
S$ 1,262
Typical prices: S$ 1,359-S$ 1,727
Multiple Airlines
Tue 14-4Tue 21-4
IAD - SIN • 2 stops
Cheapest one-way flight
S$ 371
Typical prices: S$ 617-S$ 779
Multiple Airlines
Thu 16-4
IAD - SIN • 3 stops
Top airlines
Air Canada
Cheapest • from S$ 1,282 (return)
Qatar Airways
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
Abu Dhabi (AUH)
Cheapest • Avg S$ 891 (return)
Abu Dhabi (AUH)
Shortest trip • 22h 55m (one-way)
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 33% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 21% price drop
December
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

Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
15:10 - 06:50
IAD
-
SIN
27h 40m
2 stops
Multiple Airlines Logo
09:45 - 09:45
SIN
-
IAD
36h 00m
2 stops
S$ 1,262Multiple Airlines
Mon, 27 Apr - Wed, 6 May
Multiple Airlines Logo
13:20 - 06:00
IAD
-
SIN
28h 40m
2 stops
Multiple Airlines Logo
09:45 - 09:45
SIN
-
IAD
36h 00m
2 stops
S$ 1,271Multiple Airlines
Fri, 24 Apr - Fri, 1 May
Multiple Airlines Logo
13:20 - 06:00
IAD
-
SIN
28h 40m
2 stops
Multiple Airlines Logo
09:45 - 09:45
SIN
-
IAD
36h 00m
2 stops
S$ 1,273Multiple Airlines
Tue, 14 Apr - Tue, 21 Apr
Multiple Airlines Logo
06:10 - 05:30
IAD
-
SIN
35h 20m
2 stops
Multiple Airlines Logo
07:20 - 05:40
SIN
-
IAD
34h 20m
2 stops
S$ 1,274Multiple Airlines
Sun, 22 Mar - Thu, 26 Mar
Turkish Airlines Logo
22:15 - 08:35
IAD
-
SIN
22h 20m
1 stop
Turkish Airlines Logo
10:15 - 12:45
SIN
-
IAD
38h 30m
1 stop
S$ 1,275Turkish Airlines
Sun, 12 Apr - Tue, 5 May
Air Canada Logo
09:55 - 05:15
IAD
-
SIN
31h 20m
2 stops
Air Canada Logo
07:00 - 20:29
SIN
-
IAD
25h 29m
2 stops
S$ 1,282Air Canada
Sat, 21 Mar - Mon, 30 Mar
Multiple Airlines Logo
14:30 - 17:20
IAD
-
SIN
38h 50m
2 stops
Multiple Airlines Logo
23:25 - 19:30
SIN
-
IAD
32h 05m
1 stop
S$ 1,284Multiple Airlines
Fri, 10 Apr - Mon, 20 Apr
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$ 1,287Etihad Airways
Tue, 17 Mar - Tue, 7 Apr
Etihad Airways Logo
15:35 - 09:35
IAD
-
SIN
30h 00m
1 stop
Etihad Airways Logo
21:00 - 09:45
SIN
-
IAD
24h 45m
1 stop
S$ 1,290Etihad Airways
Sun, 23 Aug - Thu, 3 Sep
Turkish Airlines Logo
21:45 - 17:55
IAD
-
SIN
32h 10m
1 stop
Turkish Airlines Logo
05:25 - 11:35
SIN
-
IAD
42h 10m
1 stop
S$ 1,293Turkish 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 April.

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 October, where tickets cost S$ 1,278 (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$ 2,427 and S$ 1,890 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 3 weeks before departure, which saves you about 33% 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$ 371
Most popular time to fly (50% 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$ 371 for a one-way ticket and S$ 1,262 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$ 2,206 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$ 2,516 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 3745 reviews
7.4Comfort
7.3Food
7.5Boarding
7.9Crew
7.4Entertainment
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

I have to congratulate Kayak (and Dylan the Chatdeal agent) because because when we decided extended our trip in Florida by two days, there were many direct flights oprions back to Boston available on the Friday we wanted to fly on the JetBlue website, but once I canceled the original JetBlue flight on their website, those direct return options disappeared immediatley! I think it's a game JetBlue plays. . Luckily, I checked Kayak and they had a direct flight that wasn't appearing on JetBlue's website and so I booked it, and we were able to fly home direct through the Kayak booking when JetBlue was offering nothing (even though I have been a True Blue member for 20 years, and also am a Mosaic member). So much for loyalty- their algorithm for booking is like a shell game. JetBlue used to be a good company but now they're worse than anyone. Also I was originally booked this trip to Florida, two months before the departure date, I booked the trip on JetBlue's website and then after the payment part, they said there was a problem and that I needed to do the booking again, so when I immediately went to rebook , the price had gone up 30%! I called them and it sounded like they had heard this so many times before and the guy told me to check back in 10 minutes and the price would be back to where it was when I was booking- it but it never was. How could the price go up 30% in one minute two months before the flight???? They're playing a game with their customers. Anyways, I booked a cheaper flight then at a less convenient time. So fast forward two months the night before the 7 AM flight, they sent me an email at midnight when I was sleeping to let me know that my flight at 7 AM had been canceled. The only thing they offered was a flight that night from from a different airport (Providence) to a different airport in Florida (West Palm Beach) or a flight two days later. No compensation, nothing. They couldn't of tried to get another plane to the Boston airport? They had all night to do it. I passed on their ridiculous options and flew with Delta and it was a great experience. Of course, I had to pay a lot more booking on the same day, but JetBlue doesn't care. I put in a lengthy complaint with the agent who assured me someone would get back to me by email within three days and I haven't heard a thing. JetBlue used to be a good company but now they're among the worst. The only thing they still have is decent legroom, but the corporate bean counters will probably start taking that away too.

We were made to wait in the airport for six hours for a flight that was ultimately canceled.

Both flights were significantly delayed. The flight experience itself was great.

My flight got delayed and eventually canceled, then rescheduled. I and several others had a connection from Boston to Paris and asked several times if we would make it. They assured us we would and then rebooked us mid flight without our consent and closed doors early even though they said they communicated we were a bit delayed. We got stranded in Boston and I opted with being rebooked for a different connection to France since they refused to pay for a Hotel. I've now been in Europe for 5 days and still haven't recieved my bags. There was absolutely no urgency for the fact that I'm in a foreign country with absolutely no change of clothes or any of my medication. Such an overwhelming and frustrating experience.

Automated scanning was slow and somewhat haphazard. Too many people were unfamiliar with the tech and were forced to learn on the fly. The hands off approach of the gate staff made it more uncomfortable. This needs work. Overall the flight and cabin crew were excellent.

The crew for the flight was A+ top notch. They were friendly and professional and made the flight a very relaxing and enjoable.

Rude crew member. She seemed annoyed at me without me saying a single word. Also loudly admonished me for having my bag next to my seat instead of tucked away before landing. Just telling me to put it away and guiding me without giving me a lecture would have been enough.

No included food for a 5 hour flight and the entertainment was only accessible if you had wired headphones (not provided). Otherwise though, great and smooth flying and customer service.

Crew were fantastic and so catering and wonderful! Full score for the entire crew!

Because of weather and mechanical issues our flight was 4 hours late. The only compensation offered to us was a meal voucher to be used only at Boston Airport and only on the day issued. But by the time it was offered to us all the restaurants were closed, so there was no way to use that offer.

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

Information on your arrival and departure airports