IAD - SIN

$411 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 3/7. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Singapore.
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Everything you should know

Cheapest round-trip
$1,182
Typical prices: $974-$1,289
Multiple Airlines
Tue 1/13Wed 1/28
IAD - SIN • 2 stops
Cheapest one-way
$411
Typical prices: $521-$602
IndiGo
Sat 3/7
IAD - SIN • 2 stops
Top airlines
Korean Air
Cheapest • from $1,183 (round-trip)
Qatar Airways
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 20% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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 round-trip 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 round-trip flight deals from Dulles Intl to Singapore

Tue, Jan 13 - Wed, Jan 28
Multiple Airlines Logo
8:20 am - 12:55 am
IAD
-
SIN
27h 35m2 stops
Multiple Airlines Logo
6:35 am - 7:35 pm
SIN
-
IAD
26h 00m2 stops
$1,182Multiple Airlines
Sun, Apr 5 - Tue, Apr 21
Korean Air Logo
7:20 am - 5:00 am
IAD
-
SIN
33h 40m2 stops
Korean Air Logo
7:30 am - 11:15 am
SIN
-
IAD
39h 45m1 stop
$1,183Korean Air
Thu, Jan 15 - Sun, Jan 25
ANA Logo
8:20 am - 12:55 am
IAD
-
SIN
27h 35m2 stops
ANA Logo
10:20 pm - 9:17 pm
SIN
-
IAD
35h 57m2 stops
$1,184ANA
Thu, Jan 8 - Fri, Jan 23
IndiGo Logo
9:15 pm - 10:15 am
IAD
-
SIN
48h 00m2 stops
IndiGo Logo
11:15 am - 7:20 pm
SIN
-
IAD
45h 05m2 stops
$1,186IndiGo
Fri, Jan 9 - Thu, Jan 15
United Airlines Logo
10:20 pm - 8:15 pm
IAD
-
SIN
32h 55m1 stop
United Airlines Logo
6:35 am - 9:13 pm
SIN
-
IAD
27h 38m2 stops
$1,187United Airlines
Fri, Apr 10 - Tue, Apr 21
Delta Logo
7:20 am - 5:00 am
IAD
-
SIN
33h 40m2 stops
Delta Logo
7:30 am - 9:16 pm
SIN
-
IAD
25h 46m2 stops
$1,188Delta
Wed, Jan 14 - Thu, Jan 29
Multiple Airlines Logo
10:40 am - 3:15 am
IAD
-
SIN
27h 35m3 stops
Multiple Airlines Logo
2:20 pm - 9:05 am
SIN
-
IAD
31h 45m2 stops
$1,190Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Multiple Airlines Logo
2:35 pm - 12:25 pm
IAD
-
SIN
32h 50m3 stops
Multiple Airlines Logo
1:35 pm - 9:05 am
SIN
-
IAD
32h 30m3 stops
$1,191Multiple Airlines
Thu, Jan 8 - Wed, Jan 14
Turkish Airlines Logo
1:30 pm - 5:35 pm
IAD
-
SIN
39h 05m1 stop
Turkish Airlines Logo
11:40 am - 11:45 am
SIN
-
IAD
37h 05m1 stop
$1,193Turkish Airlines
Thu, Mar 26 - Wed, Apr 1
SAUDIA Logo
7:10 pm - 9:55 pm
IAD
-
SIN
38h 45m2 stops
SAUDIA Logo
3:45 am - 3:45 pm
SIN
-
IAD
24h 00m1 stop
$1,194SAUDIA
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 round-trip flight from Washington, D.C. Dulles Intl Airport to Singapore?

This analysis is based on the cheapest round-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 January.

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

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

For Washington Dulles Airport to Singapore, Friday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Singapore back to Washington Dulles Airport, the best deals are generally found on Saturday, with Monday being the most expensive.

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 $990 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,911 and $1,472 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 1 week before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know

Low seasonOctober
Cheapest flight$411
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 53% increase in price.
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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $411 for a one-way ticket and $1,183 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Singapore?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Singapore.

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

    Washington Dulles Airport and Singapore are both served by 1 main airport. You will leave Washington Dulles Airport from Washington, D.C. Dulles Intl and will be arriving at Singapore Changi.

  • 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?

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

  • What is the most popular layover when flying to Singapore from Washington Dulles Airport?

    Istanbul is the most popular layover city among KAYAK users traveling from Washington Dulles Airport to Singapore.

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Singapore are Korean Air and ANA. With an average price for the route of $1,199 and an overall rating of 8.4, Korean Air is the most popular choice. ANA is also a great choice for the route, with an average price of $2,103 and an overall rating of 8.4.

  • 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 travelers 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 round-trip ticket. You could then fly to Singapore with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and SIN can sometimes prove cheaper using this method.

  • 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 5 airlines serving 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 3686 reviews
7.3Food
7.4Comfort
7.5Boarding
7.4Entertainment
7.9Crew
Airline reviews

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

8.0 ExcellentAnonymous, Oct 2025
DFW - YYC
Read more Qatar Airways reviews

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 was travelling 3.5 years after. Agree Economy is no business class but the food was mediocre. Ordered a Hindu meal, the salads were bitter . The food was really below quality and had no tast from what I had in the past. Indian Railways probably have a better quality food when compared. However the kids meal was really nice and really appreciate how they were taken care of. The restrooms were dirty .

My flight was with American Airlines 120. The flight was delayed 3 hours and I missed my connection. When I arrived in Doha, the AA staff told me to call an 800 number to rebook a different flight, which was unacceptable. Eventually a Qatar Air staff member helped rebook me on a flight to Manila, that was 12 hours later. They offered me a hotel and meal voucher which I declined, because I didn’t want to leave the airport. Long story short, I spent 12 hours in the Doha airport waiting for my next flight.

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.

Reason for travelling Tampa to Orlando is to fly Qatar Airline. we end up with American Airline. This was the miserable experience I ever had in my entire travel history. Flight attendants were rude. They hit my knee with the food cart and I was holding ice pack for 2 hours. I still have the pain after a week. WE boarded the flight twice because of the temperature inside the plan.

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.

I missed my flight ,staff unhelpful, they sat and watched me wait ,gangway door closed, English was a problem no announcement I was on time now I missed my month vacation ,lost 1400 bucks no refund I'm sick to my stomach

It’s a business class ticket but they didn’t give a lounge access

Crew was amazing as usual. Very comfortable for a 13hour flight. Check in at ATL was terrible. Ticket counter charged me $200 for a small bag. Apparently Kayak sold me a zero luggage ticket. No carry on no checked. So the check in desk charged me a bullshit $200 dollar fee for a small gym bag weighing less than 20lbs. In true 3rd party ticket buying. This will turn into a finger pointing process between Kayak and Etihad. Now I'm going to have to ship my bag back in the mail a day ahead of my return flight.

The flight from Abu Dabhi to Bangalore was terrible. The plane was an order model with no onboard entertainment. The beverage selection were very limited.

excellent, the staff was kind and the boarding process was with no issues or hassle

My baggage was not boarded and is still missing. I was only carring one piece of luggage and that is misplaced now I am stuck at mumbai without luggage. I had an onward journey from here

We booked a business class ticket via Underpricer. Somehow they screwed up our ticket from Abu Dhabi to Ahmedabad. We will be hesitant to book again with them.

One of your male flight attendant was pushy and a bit of a martinette. Completely unnecessary.

It was worst flight ever of 26h. Poor service and seating. Flight from Abu Dhabi to Islamabad service and seating was worst ever. No tv extra.

i was not allowed to use lounge, although i had business class ticket, and nobody told me my ticket was not eligible to use lounge

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Short flight but an "eager to help" crew made the journey more enjoyable!

During booking, I kept trying submitting my payment from the Mexican website and it didn't work. After I had the idea to change it to the Canadian website, it worked but I had to be charged the equivalent of 50 CAD more. I received the clear instruction that I would only be able to check-in at the airport and that it was impossible to select a seat 24 hours before departure, that I had to pay 144 CAD to do so, although not only was I able to check-in 24 hours before departure, but I could have selected my seats for free then. All in all, I almost threw $200 out the window due to misleading information. Besides, the app kept crashing, the information to get to the gate on the app was inaccurate, my gate was switched and I was only informed once in the air (luckily I had noticed the departure pannel), I was not addressed in my language beforehand and even if I tried I was immediately answered in English (which meant the crew understood but didn't want to answer accordingly), there was only one snack & beverage service on my medium haul flight and no beverage service on my short haul flight. To be fair, the planes were comfortable, the crew apart from the language issue was helpful, dynamic and engaging, the plane was clean and the directions were clear and direct. United has a lot of potential to be one of my favourite airlines, but the devil is in the details and a lot of them missed the target.

Better WiFi. I cannot understand that in 2025, United is so behind on a technology that is now a necessity and still painfully unreliable, slow and keeps disconnecting.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Very small cramped plane for an international flight. Everything else was good, but it was maybe the smallest comfort-wise I've ever been on for longer than 3-4 hours and the trip was 7.5

Flight was delayed 3 hours. No food and drink vouchers was provided. They offered a mini pretzel bag and water .

Staff was rude. Didn’t give water for 2 hours. Worst service

it was like a banya -so hot... They did provide a great experience with special food. one toilet broke midflight In general it was a peaceful and relaxing flight - for business class it was good.

Chicago to Istanbul was a much better experience than I expected since I’m more accustomed to Qatar Airways business class. The business lounge in the Istanbul airport was amazing - loved the lockers and phone charging stations, and the bathroom was a spa experience in itself. The onward leg from Istanbul to Karachi was utterly disappointing. Terrible plane, and I felt like I was in economy - the seats don’t come near to lying flat and the food was mediocre. What a sad downgrade - it isn’t as though the ticket on that leg was cheaper. So, on that front, there’s no contest with Qatar airways.

Second leg of Turkish Airline with Indigo is disaster for following reason. 1) You have to carry your cabin bags through ladder to boeing 777 because it was parked somewhere in parking lot and was not given a gate to board passengers and this seems to be people traveling to and fro from those flights and is not issue with flight itself. 2) I choose non vegetarian food on Turkish portal way ahead of checkin to entire trip, However the Indigo flight gave me random veg food saying they code veg food code from Turkish. 3) Indigo did not served any alcoholic beverages stating some weird reason which is non nonsensical. 4)Indigo have TV screens in front of you but it displays nothing except "Welcome Onboard" with annoying white black ground in dark flight. This is the most stupidest and annoying part because you are held hostage for 7 hours and only thing you could do is stare back at white screen which does not have entertainment package or even flight tracker. Such a shame.

nice and clean plane but the seats and the comfort was not what i expected. i expected more based on all the ads and reviews that i've read. I guess you get what you pay for in economy.

Overall it was good. Food was bad. I ordered gluten free vegetarian meal. But I got gluten free chicken for my long flight from Seattle to Istanbul. I don’t eat any kind of meat. Second meal I got eggplant with meat which I couldn’t eat. I don’t understand why we can’t get gluten free vegetarian meal for a 12 hour flight. I eat the bread and that was it.

Worse worse worse, i would not recommend this airline to anyone. Istanbul airport maybe State of the Art facility but staff is rude, only works if they get tips, and they push you to give tips even though my family had spent $50 in tips. Airline staff doesn't speak english so you really can't understand them. It was a nightmare travelling with Turkish. Never again.

As a big guy the seats are way too small for me. Would prefer more comfortable seats on these long haul flights.

My flight was canceled 1 minute before boarding. The customer service was owful, no one could tell us what was going happened. I spent 30hrs instead of 15 from Washington DC to Brussels. No apologie or help

Boeing 777 is a bad choice for a such a long flight.

The staff at IST airport could have been more helpful. Too much wasted time and the plane from IST to KHI was just horrible. The plane was not clean and smelled bad!

The ride share experience in JFK is terrible. After traveling on a flight, then you need to take a subway to the last stop to get an uber or lyft. Unacceptable. Bad job JetBlue for permitting JFK and Port Authority to do this to your passengers.

Checking In on JetBlue site was impossible. It hung up on REAL ID. Even my Global Entry did not help. Luckily, on Kayak site it was a breeze. Entire flight the temperature was COLD! Otherwise the crew was great!

The flight was two hours late due to a computer fault and resulting maintenance. Nothing was offered as compensation beyond bottles of water during the time we were deplaned and waiting in the terminal.

Very pleasant flight attendants. Gate crew rather loud chatting with each other.

Four plus hour flight delay in New York caused us to take off after 11:30pm. We didn’t arrive at our hotel until five hours after check in. Started the trip off feeling exhausted.

Plane was in bad shape. TV’s and WiFi didn’t work. Plane need a refresh. Not enough room for bags.

There was a fowl odour coming from the lavatory the entire flight

Everything was great. I liked the text updates so that I never miss a gate change & I have all the latest info.

I don’t usually fly budget airlines or airlines in the United States. It was as good as any other airline. The seats are comfortable and the airline attendants are not rude & surly. Very nice flight (s).

No internet on a flight over three hours in this age is criminal. Staff inattentive and dismissive

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

Information on your arrival and departure airports