S$ 572+ Cheap flights to Dulles Intl
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 23-10. Fares are subject to change and may not be available on all flights or dates of travel.
Flights to Dulles Intl in 2025
Find the latest flights to Dulles Intl in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 200,618 searches and data was last updated on 11 July 2025.
Find flight deals to Dulles Intl Airport
Cheapest flights to Dulles Intl AirportExplore the most affordable flight options available to Dulles Intl Airport. Find the lowest fares based on data from user searches, with prices last updated on 11 July 2025.
Explore the most affordable flight options available to Dulles Intl Airport. Find the lowest fares based on data from user searches, with prices last updated on 11 July 2025.
Cheapflights Fare Finder
Locate flights to Dulles Intl that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 200,618 searches and data was last updated on 11 July 2025.
Use the filters below to find and compare flights to Washington, D.C. Dulles Intl Airport that are best for you.
Fly from
Route
Depart
Return
Price
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Thu 25-9
09:10-11:55
2 stops38h 45m
Washington, D.C. Dulles Intl
Mon 29-9
12:41-00:45
2 stops48h 04m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Thu 25-9
23:25-19:30
1 stop32h 05m
Washington, D.C. Dulles Intl
Sat 27-9
13:30-17:20
2 stops39h 50m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Sun 5-10
22:10-10:05
1 stop23h 55m
Washington, D.C. Dulles Intl
Sun 19-10
08:20-00:45
2 stops28h 25m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Sun 12-10
10:15-11:45
1 stop37h 30m
Washington, D.C. Dulles Intl
Mon 27-10
14:30-17:35
1 stop39h 05m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Fri 8-8
20:40-11:55
2 stops27h 15m
Washington, D.C. Dulles Intl
Sat 16-8
12:20-06:40
1 stop30h 20m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Mon 29-12
00:05-15:30
1 stop28h 25m
Washington, D.C. Dulles Intl
Mon 2-2
17:45-06:55
1 stop24h 10m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Mon 1-12
20:30-06:50
1 stop23h 20m
Washington, D.C. Dulles Intl
Fri 12-12
11:00-07:00
1 stop31h 00m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Mon 29-9
02:00-11:57
2 stops45h 57m
Washington, D.C. Dulles Intl
Sat 15-11
17:10-00:40
2 stops42h 30m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Tue 30-12
23:45-15:35
1 stop28h 50m
Washington, D.C. Dulles Intl
Mon 2-2
17:45-06:55
1 stop24h 10m
SingaporeWashington, D.C.
SIN - IAD
SINIAD
Singapore Changi
Thu 23-10
23:25-19:30
1 stop32h 05m
Best time to book a flight to Dulles Intl
Have a flexible travel schedule? Discover the best time to fly to Dulles Intl with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight to Washington, D.C. Dulles Intl Airport
When is the best time to book a flight to Dulles Intl?
Use this chart to determine the optimal time to book a return flight from Singapore to Dulles Intl. Price data was last updated on 27 June 2025.
The price you pay for your flight to Dulles Intl may vary depending on when you book. For the best chance of a lower fare, look to book 78 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
How long is the flight to Dulles Intl?
On average, a flight from Singapore to Dulles Intl takes 32 hours 5 minutes. Flights to Dulles Intl from other popular cities in Singapore will vary in length. Below are a few examples of popular routes and their flight times.
What are the most popular airlines that fly to Dulles Intl?
The most popular airlines flying from Singapore to Dulles Intl are United Airlines, Qatar Airways and Turkish Airlines.
What are the cheapest airlines that fly to Dulles Intl?
The cheapest airlines flying from Singapore to Dulles Intl are Turkish Airlines, United Airlines and Air India.
Rainfall in Dulles Intl by month
Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Dulles Intl ranges from 66.0 - 102.0 mm per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Dulles Intl when rainfall is around 66.0 mm.
Temperature in Dulles Intl by month
Plan your trip to Dulles Intl by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Dulles Intl, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).
Reviews of airlines servicing Dulles Intl
Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 11 July 2025.
Read reviews from past customers who have flown ANA, China Airlines, andSWISS to the United States. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Boarding
Overall
Food
Comfort
Entertainment
Reviews
Kenneth,Jul 2025
SFO - HND
Crew
Boarding
Overall
Food
Comfort
Entertainment
Reviews
Kenneth,Jul 2025
SFO - HND
Crew
Boarding
Overall
Food
Comfort
Entertainment
Reviews
Kenneth,Jul 2025
SFO - HND
Crew
Boarding
Overall
Food
Comfort
Entertainment
Reviews
Kenneth,Jul 2025
SFO - HND
Crew
Boarding
Overall
Food
Comfort
Entertainment
Reviews
Kenneth,Jul 2025
SFO - HND
Crew
Boarding
Overall
Food
Comfort
Entertainment
Reviews
Kenneth,Jul 2025
SFO - HND
FAQs about flying to Dulles Intl
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Search flights to Dulles Intl by cabin class
Find flights to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Fly with Cheapflights
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 to Dulles Intl?
Deals for Dulles Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets to Dulles Intl?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights to Dulles Intl.
Can Cheapflights find flights to Dulles Intl with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights to Dulles Intl, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights to Dulles Intl become cheaper?
Yes, Cheapflights offers price alerts on Dulles Intl flights so you can book your flight when prices are ideal. Enable price alerts by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.