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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.
— IAD
16 Jul — 23 Jul1
1 adult

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.

Return from

S$ 990

One-way from

S$ 572

Popular in

August

Cheapest in

September

Average price

S$ 1,962
Air Canada
  • Air Canada
  • 25-9-29-9
  • 4 total stops
  • 86h 49m total
  • Singapore to Washington, D.C.
Air China
  • Air China
  • 23-10
  • 1 total stop
  • 32h 05m total
  • Singapore to Washington, D.C.
Highest demand for flights based on searches. 10% potential increase in price (S$ 237 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (S$ 51 potential savings vs. average return price).
Average for return flights in July 2025

Find flight deals to Dulles Intl Airport

Cheapest flights to Dulles Intl Airport
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.

Thu 25-909:10SIN - IAD
2 stops38h 45mAir Canada
Mon 29-912:41IAD - SIN
2 stops48h 04mAir Canada
Deal found 9-7S$ 990
Thu 25-923:25SIN - IAD
1 stop32h 05mMultiple Airlines
Sat 27-913:30IAD - SIN
2 stops39h 50mMultiple Airlines
Deal found 8-7S$ 1,093
Sun 5-1022:10SIN - IAD
1 stop23h 55mANA
Sun 19-1008:20IAD - SIN
2 stops28h 25mANA
Deal found 9-7S$ 1,186
Sun 12-1010:15SIN - IAD
1 stop37h 30mTurkish Airlines
Mon 27-1014:30IAD - SIN
1 stop39h 05mTurkish Airlines
Deal found 9-7S$ 1,287
Fri 8-820:40SIN - IAD
2 stops27h 15mUnited Airlines
Sat 16-812:20IAD - SIN
1 stop30h 20mUnited Airlines
Deal found 10-7S$ 1,484
Mon 29-1200:05SIN - IAD
1 stop28h 25mSWISS
Mon 2-217:45IAD - SIN
1 stop24h 10mSWISS
Deal found 10-7S$ 1,533

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

Singapore

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

S$ 990

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

S$ 1,093

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

S$ 1,186

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

S$ 1,287

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

S$ 1,484

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

S$ 1,533

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

S$ 1,615

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

S$ 1,629

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

S$ 1,658

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 23-10

23:25-19:30

1 stop32h 05m

S$ 572

Flights are sorted by cheapest return flights first.

Deals found on 8-7

Showing 1-10 of 15 results
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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.
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 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 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

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Comfort

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!
8.4
Very Good

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Comfort

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Comfort

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Comfort

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Comfort

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

Crew

8.7

Boarding

8.6

Overall

8.4

Food

7.7

Comfort

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kenneth,Jul 2025

SFO - HND

Great food, great service, great comfort. Can’t ask for more although I’m only flying economy!

FAQs about flying to Dulles Intl

  • Can I find cheaper flights to Dulles Intl if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Dulles Intl on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Dulles Intl?

    Based on reviews from Cheapflights users, Turkish Airlines is rated the highest out of the airlines that fly to Dulles Intl.

  • What is the cheapest airport to fly to in Dulles Intl?

    Washington, D.C. Dulles Intl is currently the cheapest airport to fly to in Dulles Intl. One-way flights to Washington, D.C. Dulles Intl typically cost S$ 476, while return flights cost around S$ 91.

  • Does Washington, D.C. Dulles Intl have rental cars?

    Yes. Those touching down at Washington, D.C. Dulles Intl can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Washington, D.C. Dulles Intl?

    Yes. Washington, D.C. Dulles Intl has hotels nearby for those requiring accommodations. Sleepbox Lounge Iad, Dulles International Airport is the closest property to Washington, D.C. Dulles Intl (0.0 km away from Washington, D.C. Dulles Intl).

See more FAQs

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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.

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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.

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