$515 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to Singapore departing on 5/11. 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

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Book Cheap Washington, D.C. to Singapore Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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 Washington, D.C. to Singapore

Thu, Jun 4 - Fri, Jun 12
Qatar Airways Logo
9:00 pm - 9:20 am
IAD
-
SIN
24h 20m
1 stop
Qatar Airways Logo
1:30 am - 6:20 pm
SIN
-
IAD
28h 50m
1 stop
$1,214Qatar Airways
Sat, May 9 - Sat, May 23
Multiple Airlines Logo
9:00 pm - 3:35 pm
IAD
-
SIN
30h 35m
2 stops
Multiple Airlines Logo
1:30 am - 6:20 pm
SIN
-
IAD
28h 50m
1 stop
$1,215Multiple Airlines
Tue, Aug 4 - Wed, Sep 2
Qatar Airways Logo
11:05 am - 9:15 pm
IAD
-
SIN
22h 10m
1 stop
Qatar Airways Logo
7:40 pm - 8:45 am
SIN
-
IAD
25h 05m
1 stop
$1,217Qatar Airways
Sat, Jul 25 - Mon, Aug 31
Etihad Airways Logo
3:10 pm - 9:40 am
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
9:00 pm - 9:45 am
SIN
-
IAD
24h 45m
1 stop
$1,221Etihad Airways
Tue, Jun 9 - Tue, Jun 16
Etihad Airways Logo
3:10 pm - 9:40 am
IAD
-
SIN
30h 30m
1 stop
Etihad Airways Logo
9:00 pm - 9:45 am
SIN
-
IAD
24h 45m
1 stop
$1,223Etihad Airways
Sat, Sep 5 - Sat, Sep 12
Air Canada Logo
12:40 pm - 5:15 am
DCA
-
SIN
52h 35m
2 stops
Air Canada Logo
10:50 pm - 10:20 am
SIN
-
DCA
47h 30m
2 stops
$1,233Air Canada
Wed, Oct 14 - Wed, Nov 11
Singapore Airlines Logo
5:04 pm - 5:35 pm
DCA
-
SIN
36h 31m
1 stop
Singapore Airlines Logo
8:45 pm - 8:00 pm
SIN
-
DCA
36h 15m
1 stop
$1,248Singapore Airlines
Mon, Oct 5 - Mon, Oct 19
Singapore Airlines Logo
5:04 pm - 5:35 pm
DCA
-
SIN
36h 31m
1 stop
Singapore Airlines Logo
8:45 pm - 8:00 pm
SIN
-
DCA
35h 15m
1 stop
$1,251Singapore Airlines
Thu, Oct 22 - Sun, Nov 1
Air Canada Logo
12:40 pm - 5:15 am
DCA
-
SIN
52h 35m
2 stops
Air Canada Logo
8:50 am - 1:19 pm
SIN
-
DCA
40h 29m
2 stops
$1,287Air Canada
Thu, Jul 16 - Mon, Aug 3
EVA Air Logo
6:07 pm - 11:55 am
BWI
-
SIN
29h 48m
2 stops
EVA Air Logo
1:10 pm - 6:27 am
SIN
-
BWI
29h 17m
2 stops
$1,750EVA Air
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Singapore flights

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

What is the cheapest month to fly from Washington, D.C. 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. 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. to Singapore is September, when tickets cost $343 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is $1,073 and $884 respectively.

How far in advance should I book a flight from Washington, D.C. 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. 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. to Singapore, you should book around 2 weeks before departure, which saves you about 22% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$515
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly with an average 63% increase in price.
Flight from Washington Dulles Airport to Singapore

FAQs - booking Singapore flights

  • Do I need to get a visa before I fly to Singapore?

    While you will need a passport that is valid for at least six months beyond the date of your intended duration of stay in Singapore, there is no need to get a visa so long as you plan on traveling as a tourist one business purposes for visits that last no more than 90 days. If you were traveling for any other purpose or you plan on staying in the country for longer than 90 days, you should visit the website at the Embassy of Singapore to get the most up-to-date visa information.

  • What are some things I should know about car child seat laws in Singapore before I depart from my arrival airport in Singapore?

    When transporting a child in a vehicle in Singapore, those under nine months old must use a rear-facing car seat, transitioning to a forward-facing seat until the age of four. Children up to six years old should travel in a booster seat, and those up to eight years old require a booster cushion for safe travel.

  • What are the primary differences between the three major airports in the Washington, D.C., area?

    Ronald Reagan Washington National Airport is the smallest and primarily handles domestic and short-haul international flights. Washington Dulles International Airport is a major international hub, offering a diverse range of domestic and international flights. Baltimore/Washington International Thurgood Marshall Airport is known for its mix of domestic and international flights, particularly with a focus on low-cost carriers.

  • What are reasons to upgrade to business class on United Airlines?

    Upgrading to Business Class on United Airlines elevates your travel experience with benefits such as spacious seating, enhanced comfort with lie-flat beds, gourmet dining options, and priority boarding. Enjoy exclusive lounges, attentive service from dedicated staff, increased baggage allowance, and superior in-flight entertainment, making your journey more luxurious and seamless.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to Singapore.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington, D.C. to Singapore 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, D.C. 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 from Washington, D.C. to Singapore with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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 from Washington, D.C. to Singapore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Singapore

  • One of the most popular airport destinations in Singapore is Singapore Changi Airport (SIN). One way to get there from Washington, D.C., is to travel on a one-stop flight aboard ANA from Washington Dulles International Airport (IAD) with a layover at Haneda Airport (HND). Emirates Airlines also provide a one-stop flight with layover at Dubai.
  • If you are going to be departing from Baltimore Washington International Airport (BWI), a great way to get to the Singapore Changi Airport is to take a one-stop flight utilizing Condor and Lufthansa with a layover at Frankfurt Am Main International Airport (FRA).
  • If you plan on traveling early in the morning from Washington Dulles International Airport, you might consider staying at the Washington Dulles Airport Marriott, which sits right on the airport property and offers a shuttle to the terminal.
  • If your departure flight is from Ronald Reagan Washington National Airport (DCA) aboard American Airlines, you will be happy to know that this airline offers three of their lounge locations inside of Terminals C, D, and E.
  • For those that want to travel from the Ronald Reagan Washington National Airport to Singapore, there is a one-stop flight utilizing United Airlines in Singapore airlines that has a layover at Newark International Airport before arriving at Singapore Changi Airport.

Reviews of the top 5 airlines serving from Washington, D.C. to Singapore

 
Need help choosing which airline to fly with from Washington, D.C. 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 3724 reviews
7.9Crew
7.5Boarding
7.3Food
7.3Entertainment
7.3Comfort
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

The ground crew members at check in counter were courteous. The boarding was seamless. Flight departed as scheduled. Service on board was great

Very comfortable in business class. Excellent service. Good food. Smooth trip.

The seats seems abit small and the reclining is too much, the seat in front of me came back too much and made it uncomfortable for me.

As a first time flyer with Turkish Airlines. My experience was very good due to the factor that there were to many passengers on the my first flight compared to my connecting flight. However, I know that nothing is perfect and all companies are trying to accommodate their passengers to the best way possible. I will always say, a FEW INCHES will go LONG WAY. That's something all airliners should consider, and not only the money aspect!!! A long time commitment is better than one time service! Thank you

Flight was delayed. While standing at the gate, a note appeared on the sign saying the gate had changed to a gate far away. No member of the Turkish airlines team got on the microphone to instruct passengers to go to the other gate, to ignore the chiron, etc. Finally, the message disappeared. Eventually, the flight began to board. Very slowly. More slowly than I experience with other airlines. Though Istanbul may just be slow . . . In all other ways, great flight, great entertainment (top notch movies), great service, excellent food, comfortable lie-flat seat, dimmed lights, etc.

Staff at the airport wasn't helpful or friendly. Probably the worst airport experience I have ever had, going and coming. The staff on the plane was better. Still not super friendly or personable. However, they were not rude like airport staff. They ran out of certain menu items. Maybe could have been prepared better? Overall just ok.

It was a pleasant experience. In flight entertainment could have been better

The desk crew at the LAX crew could do better. A girl named Mahesi was very abrasive and unfriendly. She needs a better customer service uproar.

It was peaceful excited We enjoyed it always Turkish peaceful excited

Istanbul to Lahore flight was less than standard for international business class cabins. Seat did not were not flat and it did not operate easily. I had to push buttons hard repeatedly to operate the seat. I was in 5A seat

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Dear Team, I purchased a full travel package that included 2 checked bags through you and JustFly. However, when I arrived at the airport, my ticket showed 0 checked bags. Since I was traveling internationally to India with 2 bags, It was a $200 per bag at the counter, which was extremely disappointing. For an international trip, why would I ever choose a no‑bag option for only $20–$30 less? This seems like an error in the booking process, and I am requesting clarification and a resolution. I have called JustFly and on phone for 1 hr :53 min and they couldn't help till I show some kind of proof etc which isn't possible but besides that love your service and using it for years !

Awful the whole airline arrived to check baggage and board our flight and the airline desk was closed where none of the passengers could check in baggage, asked for a supervisor and was refused a supervisor, called the airlines from the airport and they refused to refund the flights for their actions in the airport, Etihad and Garuda Airlines absolutely horrible customer service all the way around.

Good one but just notice that you have to ask several time to get water or coffee .

Good service. But on flight to Kochi no entertainment except in app. And no working outlets to charge phone.

Kayak and Aran grant issuing business class tickets without lounge access and sometimes 1 or 2 connections in economy class. It’s very disappointing to find out that after buying the ticket. Never buy tickets on kayak and Aran grant again

It was fantastic. The flight from Chicago to Abu Dahbi was fantastic. The crew, food and service were amazing. Everything was handled by the crew member assigned to us , Nicholas, was usually done before we asked for it. Highly recommend Etihad!

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.

Purchased through 3rd party vendor which made everything difficult. Unable to check in online. Unable to get flight updates easily, tsa precheck information didn’t carry through, longer time to check in in person. Entertainment looked good but had to purchase conventional headphones to view.

Boarding was fast, easy, and we landed early. The entertainment system was very buggy and kept resetting throughout the flight.

Not having an assigned seat until boarding and then having to check my bag.

Flight emergency landed in Chicago due to “Odor” in back of plane . Had to buy ANOTHER TICKET to get to Boston cash out of my own pocket . Then they would notchange my return flight time without a 400. Charge!!!! Insulting.

I purchased ticket so our daughter ( a minor) can sit next to her mother. No help at gate after kayak insisted that this could be done. She ended sitting by herself

Flight was as expected. But it was delayed an hour. Also, my luggage got damaged. So that sucked especially since the damage made navigating the airport difficult. Walking to get ground transportation is sooo far away now and my checked bag was difficult to carry.

we were an hour delayed after boarding and given no reason. Headsets cost money. Also there were openrows with no one setting in them but we were told we were not allowed to swtich.

Crew was very friendly. Did not like being jammed in the back middle seat. Don’t understand why I can not select an aisle for free based on first come first serve. Also first time I’ve been on a flight which attempted land then circled Detroit airport multiple times.

Terrible. There was a lot of misleading information regarding ticketing, seat upgrades, & boarding group. I also expect my seat will recline. I have back problems & it is very painful for me of the seat doesn’t recline. In addition, when I choose a fare that allows me a carry-on bag, I expect to be able to carry it on. Not be forced to check it. Thos happened on my flight to MCO & back to Boston. Not sure I will ever fly JetBlue again. Further I bought the ticket through hat deal. I will NEVER do that again. They were incapable of providing an accurate record locator # for either leg of the trip. I had to call them before each flight with me VERY stressed about whether I would actually be able to get on my flight. Who does that? Who books flight & then FAILS to give an accurate record locator? Twice!

The flight was delayed 4 hours and the JetBlue people at the counter kept lying to us and telling us it was due to weather however all other flights were going in and out of NY and FL. Then they lied that the plane had to stop to refuel. Then they lied and said the plane needed a tire change. JetBlue is the worst. Then they gave a lot of people meal vouchers however I didn’t know they did that and they didn’t offer anything to me.

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

Cabin class types available on flights to Singapore

Cabin classes available on flights to Singapore. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.