SIN - IAD

S$ 684 Find Cheap Flights from Singapore to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Singapore to Dulles Intl departing on 25-11. 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 Washington, D.C. Dulles Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to Washington, D.C., 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 Singapore to Washington, D.C., as well as popular online travel agencies
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Singapore to Dulles Intl 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 Singapore to Dulles Intl

Wed, 11 Mar - Sun, 15 Mar
Etihad Airways Logo
19:25 - 10:05SIN-IAD
26h 40m1 stop
Etihad Airways Logo
15:35 - 09:35IAD-SIN
30h 00m1 stop
S$ 1,275Etihad Airways
Find Deal
Wed, 11 Mar - Sun, 15 Mar
Etihad Airways Logo
19:25 - 10:05SIN-IAD
26h 40m1 stop
Etihad Airways Logo
15:35 - 09:35IAD-SIN
30h 00m1 stop
S$ 1,276Etihad Airways
Find Deal
Sun, 1 Mar - Thu, 30 Apr
Etihad Airways Logo
19:25 - 09:05SIN-IAD
26h 40m1 stop
Etihad Airways Logo
15:35 - 09:15IAD-SIN
29h 40m1 stop
S$ 1,286Etihad Airways
Find Deal
Thu, 15 Jan - Sun, 1 Feb
Turkish Airlines Logo
10:25 - 19:20SIN-IAD
45h 55m1 stop
Turkish Airlines Logo
13:30 - 08:45IAD-SIN
30h 15m1 stop
S$ 1,359Turkish Airlines
Find Deal
Thu, 15 Jan - Sun, 1 Feb
United Airlines Logo
10:45 - 15:40SIN-IAD
41h 55m1 stop
United Airlines Logo
08:20 - 08:00IAD-SIN
34h 40m2 stops
S$ 1,453United Airlines
Find Deal
Sat, 15 Nov - Tue, 18 Nov
Turkish Airlines Logo
10:25 - 11:45SIN-IAD
38h 20m1 stop
Turkish Airlines Logo
13:30 - 08:45IAD-SIN
30h 15m1 stop
S$ 1,540Turkish Airlines
Find Deal
Sat, 28 Feb - Thu, 30 Apr
Qatar Airways Logo
03:15 - 15:55SIN-IAD
25h 40m1 stop
Qatar Airways Logo
21:00 - 21:00IAD-SIN
36h 00m1 stop
S$ 1,847Qatar Airways
Find Deal
Sat, 28 Feb - Thu, 30 Apr
Qatar Airways Logo
03:15 - 15:55SIN-IAD
25h 40m1 stop
Qatar Airways Logo
21:00 - 11:25IAD-SIN
26h 25m2 stops
S$ 1,982Qatar Airways
Find Deal
Wed, 17 Dec - Wed, 24 Dec
United Airlines Logo
10:10 - 23:21SIN-IAD
26h 11m2 stops
United Airlines Logo
16:10 - 20:15IAD-SIN
39h 05m1 stop
S$ 2,030United Airlines
Find Deal
Tue, 10 Mar - Sun, 15 Mar
Korean Air Logo
01:35 - 19:12SIN-IAD
29h 37m2 stops
Korean Air Logo
07:00 - 00:10IAD-SIN
29h 10m2 stops
S$ 2,213Korean Air
Find Deal

Everything you should know

Top airlines
Etihad Airways
Cheapest • from S$ 1,274 (return)
Korean Air
Best reviews • 8.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 29% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest return fare
S$ 1,275
Typical prices: S$ 1,282-S$ 1,519
Etihad Airways
Wed 11-3Sun 15-3
SIN - IAD • 1 stop
Cheapest one-way flight
S$ 684
Typical prices: S$ 828-S$ 1,070
Multiple Airlines
Tue 25-11
SIN - IAD • 3 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Dulles Intl!
Booking Insights

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

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

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

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

What’s the cheapest day of the week to fly from Singapore to Washington Dulles Airport?

The average price of all round-trip flights from Singapore to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Washington Dulles Airport on a Friday and more expensive on a Tuesday. On your return trip to Singapore, you should consider flying back on a Tuesday, and avoid Fridays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Singapore to Washington, D.C. Dulles Intl Airport, 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 Singapore to Washington, D.C. Dulles Intl Airport is March, where tickets cost S$ 1,342 (return) on average. On the other hand, the most expensive months are November and July, where the average cost of round-trip tickets is S$ 4,064 and S$ 2,000 respectively.

Good to know

Low seasonJuly
Cheapest flightS$ 684
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Singapore to Washington Dulles Airport

When to book flights from Singapore to Dulles Intl

Are your dates flexible? Find out the best times to travel from Singapore to Dulles Intl 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 Singapore to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Singapore to Washington, D.C. Dulles Intl Airport was S$ 684 for a one-way ticket and S$ 1,274 for a return.

  • Which airports will I be using when flying from Singapore to Washington Dulles Airport?

    When flying out of Singapore you will be using Singapore Changi. You will be landing at Washington Dulles Airport, also known as Washington, D.C. Dulles Intl.

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

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

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

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Singapore and Washington Dulles Airport, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Singapore to Washington, D.C., Korean Air or United Airlines?

    The two airlines most popular with KAYAK users for flights from Singapore to Washington, D.C. are Korean Air and United Airlines. With an average price for the route of S$ 2,220 and an overall rating of 8.4, Korean Air is the most popular choice. United Airlines is also a great choice for the route, with an average price of S$ 1,593 and an overall rating of 7.4.

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

    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 Singapore to Washington Dulles Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Singapore 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 Singapore to Washington Dulles Airport?

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

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

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

Reviews of the top 5 airlines flying from Singapore to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Singapore to Washington, D.C.. 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 Singapore to Dulles Intl? 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.
8.4
Korean AirOverall score based on 1157 reviews
8.5Boarding
8.1Food
8.3Comfort
8.7Crew
8.2Entertainment
Airline reviews

It’s great, long flight and arrive safe at destination

10.0 ExcellentAye, Oct 2025ICN - MSP
Read more Korean Air reviews

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

One of the flight attendants stepped on my foot. I was on the aisle seat. A lady inside needed to get out. So Instood. Just then, a flight attentendant came wuicklybtheoughbthe aisle and stepprd on my sock covered toes. I let out a small sound. She stopped momentarily, but didn’t ask how I was just took off of the aisle. Never came back to see how I was. Fortunately, I was not really hurt other than a slight soreness in my toes. But I found that to be very negligent.

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Korean Air is unlike any other major airline I have flown with. The grace and respect that the staff has from check in to de-boarding is unmatched. The flight attendants this time were especially wonderful to my five little children. They helped us rearrange to more suitable seating, brought our children’s meals, and patiently waited for them in the aisles when they had to use the bathroom. We felt so welcome and comfortable. I really appreciate the meal voucher when our flight was delayed. I am grateful to have had such an stress-free experience.

It's good overall. Flight was packed. Inflight entertainment choices were lacking.

They were very accommodating of a dietary issue. Nice movie & tv selections. Non-stop helped get through a very long (15 hr) flight

Great except for the delay in Korea. Korean Air did a great job setting up a hotel for the night. I also needed assistance with a wheelchair and they were outstanding.

Paid $10 for wifi for full flight duration and the wifi wasn’t available after initial 2 hours

My baggage is lost. Flight cancelled, Rebooked ticket through long routes. Mental stress, emotional hurt

The flight overall was good. The attendants did a good job except that 1 female had too much fragrance on. The other things that made the flight unpleasant were out of the airlines control.

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

I would love the entertainment center to be updated with more content. The flight to Doha had more options than the one to Miami

Overall the experience was neat with crew being nice and caring especially to parent with kids. The free snacks option was okay. The kiosk at Philly airport didn’t work.

First keep the airline as you promise. Reason for travelling from Orlando to Tampa is to go with Qatar Airline. We end up with American Airline. As expected the service was horrible.

Not sure how we end up with American Airlines instead of Qatar Airways. From Philadelphia to Qatar they boarded us then they asked us to unload. After 30 minutes later they board us again. The inside the plane it was burning hot and we were sweating like crazy. Crew members are absolute rude. The way they served the passengers were horrible. One of the crew members hit my knee with food cart and kept going. I was holding an ice pack for almost 2 hours. I am still with the pain.

I felt that when I was rerouted it should have been to business class.

The flight was smooth Thank God but the delays and changing gates for 3-4 times made me so tired of walking back and forth with heavy bags I thought I was going to pass out with heavy headaches but Thank God finally found the final gate and home safe. These delays happen anytime for important reasons so just be patient when you come across these situations.

Crew was dismissive. Snacks and refills not offered. Poor business class experience. Bed not comfortable compared to Emirates or BA.

Flight was delayed for 5 hours because crew didn’t have enough time to rest - this seems like it could have been avoided with better scheduling. Food was not good.

IAD with the archaic people movers is just a place to be avoided.

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

This is the best united airlines flight that I took. The crew was very friendly and the food was tasty!

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

Had one staff that was not pleasant. Seems they are stressed with too many people to care for.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

We had a very long diversion and our food voucher didn’t work because the restaurants were closed

They can my date of travel and let me standard in Istanbul for three days stop over and only pay for one day in a hotel with only one breakfast for three days.

the flight was cancelled and I was rebooked twice, once 26 hours later, then another 24 hours later. In total the flight was delayed for 40 hours. Never again will I use kayak or Turkish Airlines for my travel.

Worst experience with boarding once we left the wheel chair even traveling business we had to wait with all the crowd for the bus to take us to the plane then climb the stairs with our bags When you pay extra for comfort and convenience and you don’t get any is disappointing

Food is very turkish. No regard for other natinalities taste and preference. The entertainment can be improved- it was the same menu on 10/8/25 and 10/25/25. The boarding is the worst in the airline industry- I suggest you ask your staff to and watch how other airlines do it.

The best airline for international travel in terms of value you get in business class (service/cost)

I liked the overall flight experience. However, Turkish officials could do a better job at guiding non-Turkish speakers to their connecting flight gates in such a huge & vast airport.

Very small and cramped aisles and seats. Food was poor but the fresh hot roll and hummus was good. No cans of soda given but they had small bottles of water. Crew was nice and pleasant and kept bathroom clean.

We couldn’t fly to Chicago on our booked flight. The flight was overbooked.

Small seat space for 13 hours flight, they charged for baggage , very bad quality of food,

I was sitting almost in the back, the seats are very tight and there’s no legroom, it’s uncomfortable for a long distance

Food is good, staff is good... Wi-fi quality is poor, disembarkment after landing is atrocious.

Flight crew was lovely. Bathrooms should have been cleaner. The handsets in business class for watching the entertainment are horrible. Very difficult to figure out which buttons are for what. I managed to get the flight maps on my screen but it wasn't easy. Never got anything else up.

Uneventful trip. Good flight crew. Food could have been better and a bit more of it. Cabin cleanliness was ok.

Inflight Services are poor compared to other airlines. They do not offer even water during 15 hr flight. Food is little in portion and I had food poisoning after last meal ( rajma chawal)

Boarding at Mumbai airport was terrible, the staff had no idea how to handle it. It was chaos - and led to a delay

My seats that I paid for were changed last minute and I had to sit in uncomfortable chairs

This was a bery good experience as it was a newer plane . AI older plane bussiness class is bad .

What a pathetic plane it was. Entertainment system didn’t work. USB port was broken. There was a hole on top of folding serving table. Broken restrooms in the middle of flight.

Our seat monitor did not Not work either way going to Vietnam. I had a bulkhead seat with plenty of room, but with No monitor, it was a long flight with no movies. Fun was good, staff was Excellent.

I will never ever book air india in the future. I was with my family and at delhi airport I had to go through too with horrible experience. My 12 years daughter saud that she will never come bqck to india the way people treated us. There was no line for bags drop off since we checked online and print tag at their Kiosk as per email instruction. People working at the counter were so careless and rude. They were keep talking to each other than taking care the customers. I will not recommend anyone to fly via air india. I had horrible experience. Especially, the staff at checking counters was very very rude and careless. I have feeling if air india won't change the way they doing their operations they will out of business in a few years. Air hostes were not happy . I did not see a smile on anyone in the plane. I called twice for the assistance and no one showed up. I hope you will sene this to the Hire authority. I left a video with an another employee of air india who asked me about my experiences. I hope they will make some changes ASAP. Regars, Mohinder Kumar

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