Cheap flights from Washington, D.C. Dulles Intl Airport to Singapore from S$ 548
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1-3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SIN
6 Dec — 13 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Singapore Changi are usually found in November or March, booked 25 days in advance, depart on a Monday or Tuesday and return on a Friday
Find flight deals from Dulles Intl to Singapore
Enter your travel dates to find the best prices.
Cheapest flights from Dulles Intl to Singapore
Explore the most affordable flight options available from Dulles Intl to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 November 2025.
Fri 14-1110:40IAD - SIN
1 stop21h 35mQatar Airways
Sun 16-1120:15SIN - IAD
1 stop32h 40mQatar Airways
Deal found 4-11S$ 1,473
Thu 27-1112:55IAD - SIN
2 stops30h 05mUnited Airlines
Tue 2-1222:20SIN - IAD
1 stop22h 10mUnited Airlines
Deal found 5-11S$ 1,476
Thu 27-1121:10IAD - SIN
1 stop23h 25mMultiple Airlines
Mon 1-1220:25SIN - IAD
2 stops35h 05mMultiple Airlines
Deal found 4-11S$ 1,484
Mon 1-1220:05IAD - SIN
1 stop23h 40mQatar Airways
Wed 17-1217:25SIN - IAD
2 stops35h 30mQatar Airways
Deal found 4-11S$ 1,501
Wed 5-1113:30IAD - SIN
1 stop31h 30mMultiple Airlines
Sun 9-1121:15SIN - IAD
2 stops31h 15mMultiple Airlines
Deal found 4-11S$ 1,503
Sun 30-1121:15IAD - SIN
2 stops48h 00mIndiGo
Sat 6-1211:15SIN - IAD
2 stops45h 05mIndiGo
Deal found 5-11S$ 1,511
Wed 3-1221:15IAD - SIN
2 stops31h 05mIndiGo
Wed 10-1211:15SIN - IAD
2 stops45h 05mIndiGo
Deal found 4-11S$ 1,515
Thu 13-1107:43IAD - SIN
2 stops28h 07mMultiple Airlines
Fri 21-1119:25SIN - IAD
1 stop33h 05mMultiple Airlines
Deal found 5-11S$ 1,516
Wed 5-1113:30IAD - SIN
1 stop31h 30mTurkish Airlines
Sun 9-1110:25SIN - IAD
1 stop45h 55mTurkish Airlines
Deal found 4-11S$ 1,520
Sat 6-1221:15IAD - SIN
2 stops48h 00mIndiGo
Sun 21-1211:15SIN - IAD
2 stops45h 05mIndiGo
Deal found 5-11S$ 1,524
Sat 8-1113:30IAD - SIN
2 stops38h 50mIndiGo
Tue 18-1119:40SIN - IAD
2 stops36h 40mIndiGo
Deal found 4-11S$ 1,531
Best flights from Dulles Intl to Singapore
Discover carefully curated flight deals from Dulles Intl to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 November 2025.
Mon 4-515:35IAD - SIN
3 stops28h 55mMultiple Airlines
Mon 11-510:30SIN - IAD
2 stops35h 15mMultiple Airlines
Deal found 5-11S$ 1,571
Wed 25-311:40IAD - SIN
1 stop21h 35mQatar Airways
Wed 8-403:10SIN - IAD
1 stop24h 30mQatar Airways
Deal found 5-11S$ 1,589
Fri 5-1221:15IAD - SIN
2 stops48h 00mIndiGo
Fri 12-1211:15SIN - IAD
2 stops45h 05mIndiGo
Deal found 5-11S$ 1,639
Mon 9-312:50IAD - SIN
1 stop28h 10mKorean Air
Wed 11-301:35SIN - IAD
2 stops29h 37mKorean Air
Deal found 5-11S$ 1,759
Mon 9-321:05IAD - SIN
2 stops31h 35mMalaysia Airlines
Thu 12-321:20SIN - IAD
2 stops31h 35mMalaysia Airlines
Deal found 4-11S$ 1,834
Wed 25-321:05IAD - SIN
1 stop23h 40mAmerican Airlines
Thu 2-403:10SIN - IAD
1 stop24h 30mAmerican Airlines
Deal found 5-11S$ 1,869
Mon 22-1206:10IAD - SIN
2 stops29h 45mUnited Airlines
Fri 2-122:20SIN - IAD
2 stops26h 31mUnited Airlines
Deal found 5-11S$ 1,949
Wed 25-321:05IAD - SIN
2 stops39h 25mMultiple Airlines
Thu 2-403:10SIN - IAD
1 stop24h 30mMultiple Airlines
Deal found 5-11S$ 1,759
Fri 5-1218:10IAD - SIN
3 stops35h 20mMultiple Airlines
Fri 12-1217:00SIN - IAD
2 stops35h 30mMultiple Airlines
Deal found 5-11S$ 1,839
Last-minute flights from Dulles Intl to Singapore
Discover last-minute flight deals from Dulles Intl to Singapore. Data last updated 6 November 2025 and is based on user searches.
Wed 5-1113:30IAD - SIN
1 stop31h 30mMultiple Airlines
Sun 9-1121:15SIN - IAD
2 stops31h 15mMultiple Airlines
Deal found 4-11S$ 1,503
Wed 5-1113:30IAD - SIN
1 stop31h 30mTurkish Airlines
Sun 9-1110:25SIN - IAD
1 stop45h 55mTurkish Airlines
Deal found 4-11S$ 1,520
Sat 8-1113:30IAD - SIN
2 stops38h 50mIndiGo
Tue 18-1119:40SIN - IAD
2 stops36h 40mIndiGo
Deal found 4-11S$ 1,531
Thu 13-1107:43IAD - SIN
2 stops28h 07mMultiple Airlines
Fri 21-1119:25SIN - IAD
1 stop33h 05mMultiple Airlines
Deal found 5-11S$ 1,516
Fri 14-1110:40IAD - SIN
1 stop21h 35mQatar Airways
Sun 16-1120:15SIN - IAD
1 stop32h 40mQatar Airways
Deal found 4-11S$ 1,473
Thu 27-1112:55IAD - SIN
2 stops30h 05mUnited Airlines
Tue 2-1222:20SIN - IAD
1 stop22h 10mUnited Airlines
Deal found 5-11S$ 1,476
Thu 27-1121:10IAD - SIN
1 stop23h 25mMultiple Airlines
Mon 1-1220:25SIN - IAD
2 stops35h 05mMultiple Airlines
Deal found 4-11S$ 1,484
Sun 30-1121:15IAD - SIN
2 stops48h 00mIndiGo
Sat 6-1211:15SIN - IAD
2 stops45h 05mIndiGo
Deal found 5-11S$ 1,511
Mon 1-1220:05IAD - SIN
1 stop23h 40mQatar Airways
Wed 17-1217:25SIN - IAD
2 stops35h 30mQatar Airways
Deal found 4-11S$ 1,501
Wed 3-1221:15IAD - SIN
2 stops31h 05mIndiGo
Wed 10-1211:15SIN - IAD
2 stops45h 05mIndiGo
Deal found 4-11S$ 1,515
Sat 6-1221:15IAD - SIN
2 stops48h 00mIndiGo
Sun 21-1211:15SIN - IAD
2 stops45h 05mIndiGo
Deal found 5-11S$ 1,524
One-way flights from Dulles Intl to Singapore
Search for one-way flight options from Dulles Intl to Singapore. Find affordable one-way fares based on user searches. Data last updated 6 November 2025.
Sun 1-321:15IAD - SIN
2 stops31h 05mIndiGo
Deal found 4-11S$ 548
Sun 1-314:35IAD - SIN
3 stops34h 05mMultiple Airlines
Deal found 4-11S$ 572
Wed 11-322:15IAD - SIN
2 stops31h 05mIndiGo
Deal found 4-11S$ 575
Tue 10-214:35IAD - SIN
1 stop30h 00mEtihad Airways
Deal found 5-11S$ 606
Wed 11-315:35IAD - SIN
1 stop30h 00mEtihad Airways
Deal found 4-11S$ 608
Sun 8-315:35IAD - SIN
3 stops30h 45mMultiple Airlines
Deal found 4-11S$ 617
Tue 10-221:15IAD - SIN
2 stops48h 00mIndiGo
Deal found 5-11S$ 621
Wed 7-107:05IAD - SIN
3 stops52h 20mMultiple Airlines
Deal found 5-11S$ 623
Sat 7-218:04IAD - SIN
1 stop34h 41mMultiple Airlines
Deal found 5-11S$ 631
Tue 10-315:35IAD - SIN
3 stops30h 45mMultiple Airlines
Deal found 4-11S$ 634
Cheap flight deals from Dulles Intl to Singapore
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 6 November 2025.
Customise your flight search to find flights from Dulles Intl to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 200,618 searches. Data last updated 6 November 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Singapore that are best for you.
Fly from
Dulles Intl
Fly to
Singapore
Route
Depart
Return
Price
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Mon 4-5
15:35-08:30
3 stops28h 55m
Singapore Changi
Mon 11-5
10:30-09:45
2 stops35h 15m
S$ 1,571
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Wed 25-3
11:40-21:15
1 stop21h 35m
Singapore Changi
Wed 8-4
03:10-15:40
1 stop24h 30m
S$ 1,589
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Fri 5-12
21:15-10:15
2 stops48h 00m
Singapore Changi
Fri 12-12
11:15-19:20
2 stops45h 05m
S$ 1,639
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Mon 9-3
12:50-05:00
1 stop28h 10m
Singapore Changi
Wed 11-3
01:35-19:12
2 stops29h 37m
S$ 1,759
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Wed 25-3
21:05-00:30
2 stops39h 25m
Singapore Changi
Thu 2-4
03:10-15:40
1 stop24h 30m
S$ 1,759
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Mon 9-3
21:05-16:40
2 stops31h 35m
Singapore Changi
Thu 12-3
21:20-16:55
2 stops31h 35m
S$ 1,834
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Fri 5-12
18:10-18:30
3 stops35h 20m
Singapore Changi
Fri 12-12
17:00-15:30
2 stops35h 30m
S$ 1,839
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Wed 25-3
21:05-08:45
1 stop23h 40m
Singapore Changi
Thu 2-4
03:10-15:40
1 stop24h 30m
S$ 1,869
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Mon 22-12
06:10-00:55
2 stops29h 45m
Singapore Changi
Fri 2-1
22:20-11:51
2 stops26h 31m
S$ 1,949
Washington, D.C.Singapore
IAD - SIN
IADSIN
Washington, D.C. Dulles Intl
Sun 1-3
14:35-09:35
1 stop30h 00m
S$ 606
Flights are sorted by cheapest return flights first.
Deals found on 5-11
Showing 1-10 of 21 results
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Best time to book a flight from Dulles Intl to Singapore
Have a flexible travel schedule? Discover the best time to fly to Singapore from Dulles Intl with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Singapore
Prices
More
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Singapore?
Use this chart to determine the optimal time to book a return flight from Dulles Intl to Singapore. Price data was last updated on 31 October 2025.
Booking 25 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Singapore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Singapore?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of S$ 1,027). Flying from Washington, D.C. Dulles Intl Airport to Singapore in June is currently the most expensive (average of S$ 1,497). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What’s the top stopover airport for flights from Washington, D.C. Dulles Intl Airport to Singapore?
Share of one-stop return flights from Washington, D.C. Dulles Intl Airport to Singapore chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Doha (DOH) – chosen by Cheapflights users on 75% of one-stop itineraries from Washington, D.C. Dulles Intl Airport to Singapore on Cheapflights.
What’s the fastest stopover option from Washington, D.C. Dulles Intl Airport to Singapore?
Shortest average travel time for one-stop one-way flights from Washington, D.C. Dulles Intl Airport to Singapore, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Doha (DOH) have the shortest average one-way travel time for one-stop routes: 21h 35m.
What’s the fastest stopover option from Washington, D.C. Dulles Intl Airport to Singapore?
Shortest average travel time for one-stop one-way flights from Washington, D.C. Dulles Intl Airport to Singapore, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Doha (DOH) have the shortest average one-way travel time for one-stop routes: 21h 35m.
Which airport typically offers the quickest stopover for flights from Washington, D.C. Dulles Intl Airport to Singapore?
Average stopover duration for one-stop one-way flights from Washington, D.C. Dulles Intl Airport to Singapore, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Istanbul (IST) offer the fastest connection on this route, with an average stopover time of 2h 10m.
Reviews of airlines servicing Singapore
Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated 6 November 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Singapore, such as Qatar Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Too crammed for the amount you have to pay. That was very uncomfortable
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to Singapore from Washington, D.C. Dulles Intl?
Located just 16.9 km from the city centre, Singapore Changi is the airport most travellers will use when flying to Singapore from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Changi (SIN) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 1 airline.
How long is the flight from Washington, D.C. Dulles Intl Airport to Singapore?
There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Singapore in 21h 35m. Fly via United Airlines, Qatar Airways, or IndiGo to get the fastest option. There are 15521 km between Washington, D.C. Dulles Intl Airport and Singapore. This flight may include one or multiple stops.
What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Singapore round-trip?
Qatar Airways, at S$ 1,386, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Singapore.. Qatar Airways is priced at 12% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for business class flights from Dulles Intl to Singapore?
Yes. Cheapflights offers flight deals from Dulles Intl to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Singapore?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Singapore (average of S$ 1,027). Flying from Washington, D.C. Dulles Intl Airport to Singapore in June is currently the most expensive (average of S$ 1,497). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Singapore departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 6 November 2025.
Discover the top airline that operate flights from Dulles Intl to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 200,618 searches. Data last updated 6 November 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Dulles Intl to Singapore?
Cheapflights makes it easy to find Dulles Intl to Singapore flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Singapore?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dulles Intl to Singapore for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Dulles Intl to Singapore with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Dulles Intl to Singapore flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Dulles Intl to Singapore become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!
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