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S$ 600+ 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 8-9. Fares are subject to change and may not be available on all flights or dates of travel.
— IAD
21 Aug — 28 Aug1
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 16 August 2025.

Return from

S$ 997

One-way from

S$ 676

Popular in

July

Cheapest in

August

Average price

S$ 1,315
28-9-6-10
  • 28-9-6-10
  • 4 total stops
  • 86h 26m total
  • Singapore to Washington, D.C.
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IndiGo
  • IndiGo
  • 28-9
  • 2 total stops
  • 36h 00m total
  • Singapore to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 2% potential increase in price.
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Cheapest flight prices on average. 1% potential price decrease (S$ 29 potential savings vs. average return price).
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Average for return flights in August 2025
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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 16 August 2025.

Fri 19-909:00SIN - IAD
1 stop22h 30mAir China
Tue 23-923:00IAD - SIN
1 stop34h 55mAir China
Deal found 14-8S$ 1,018
Fri 19-909:00SIN - IAD
1 stop22h 30mMultiple Airlines
Tue 23-921:40IAD - SIN
2 stops32h 05mMultiple Airlines
Deal found 13-8S$ 1,125
Sun 5-1009:10SIN - IAD
2 stops38h 03mAir Canada
Sun 19-1009:35IAD - SIN
2 stops33h 30mAir Canada
Deal found 15-8S$ 1,139
Thu 30-1008:50SIN - IAD
2 stops24h 09mAir Canada
Sat 8-1122:11IAD - SIN
2 stops43h 49mAir Canada
Deal found 14-8S$ 1,162
Thu 30-1023:55SIN - IAD
1 stop31h 35mMultiple Airlines
Sat 8-1113:30IAD - SIN
2 stops38h 50mMultiple Airlines
Deal found 14-8S$ 1,168
Fri 19-906:15SIN - IAD
2 stops26h 50mAir Canada
Tue 23-914:25IAD - SIN
2 stops28h 40mAir Canada
Deal found 13-8S$ 1,192
Wed 3-906:15SIN - IAD
2 stops26h 40mANA
Wed 17-912:15IAD - SIN
1 stop30h 25mANA
Deal found 15-8S$ 1,193
Sun 28-922:10SIN - IAD
2 stops35h 15mAir Canada
Sun 5-1017:15IAD - SIN
2 stops25h 50mAir Canada
Deal found 14-8S$ 1,204
Sun 28-919:45SIN - IAD
2 stops36h 00mIndiGo
Sun 5-1021:40IAD - SIN
2 stops31h 40mIndiGo
Deal found 14-8S$ 1,226

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 16 August 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

Fri 19-9

09:00-19:30

1 stop22h 30m

Washington, D.C. Dulles Intl

Tue 23-9

23:00-21:55

1 stop34h 55m

S$ 1,018

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Fri 19-9

09:00-19:30

1 stop22h 30m

Washington, D.C. Dulles Intl

Tue 23-9

21:40-17:45

2 stops32h 05m

S$ 1,125

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 5-10

09:10-11:13

2 stops38h 03m

Washington, D.C. Dulles Intl

Sun 19-10

09:35-07:05

2 stops33h 30m

S$ 1,139

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 30-10

08:50-20:59

2 stops24h 09m

Washington, D.C. Dulles Intl

Sat 8-11

22:11-07:00

2 stops43h 49m

S$ 1,162

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 30-10

23:55-19:30

1 stop31h 35m

Washington, D.C. Dulles Intl

Sat 8-11

13:30-17:20

2 stops38h 50m

S$ 1,168

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Fri 19-9

06:15-21:05

2 stops26h 50m

Washington, D.C. Dulles Intl

Tue 23-9

14:25-07:05

2 stops28h 40m

S$ 1,192

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Wed 3-9

06:15-20:55

2 stops26h 40m

Washington, D.C. Dulles Intl

Wed 17-9

12:15-06:40

1 stop30h 25m

S$ 1,193

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Sun 28-9

22:10-21:25

2 stops35h 15m

Washington, D.C. Dulles Intl

Sun 5-10

17:15-07:05

2 stops25h 50m

S$ 1,204

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Mon 8-9

23:25-19:30

1 stop32h 05m

S$ 600

SingaporeWashington, D.C.

SIN - IAD

SINIAD

Singapore Changi

Thu 20-11

19:40-19:15

2 stops36h 35m

S$ 652

Flights are sorted by cheapest return flights first.

Deals found on 13-8

Showing 1-10 of 17 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 8 August 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 22 hours 30 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.

United Airlines
United Airlines
From S$ 991
Qatar Airways
Qatar Airways
From S$ 1,374
Turkish Airlines
Turkish Airlines
From S$ 966
Korean Air
Korean Air
From S$ 1,261

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 16 August 2025.
Read reviews from past customers who have flown Korean Air, Qatar Airways, andUnited Airlines 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.
Korean Air
8.4
Very Good
1,131 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very Good
1,131 reviews
Korean Air
8.4
Very Good
1,131 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Qatar Airways
7.4
Good
3,609 reviews
Korean Air
8.4
Very Good
1,131 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
8,916 reviews
Korean Air
8.4
Very Good
1,131 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Turkish Airlines
7.3
Good
3,942 reviews
Korean Air
8.4
Very Good
1,131 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Air India
5.5
Fair
2,930 reviews
Korean Air
8.4
Very Good
1,131 reviews
Check prices

Entertainment

8.2

Crew

8.7

Boarding

8.5

Food

8.1

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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$ 478, while return flights cost around S$ 91.

  • How much is a return flight to Dulles Intl?

    A return flight to Dulles Intl will typically cost around S$ 71, however they can be found for as little as S$ 71.

  • 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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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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