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S$ 161+ Cheap flights from Washington, D.C. Dulles Intl Airport

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 27-6. 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.
IAD — SIN
5 5月 — 12 5月1
1 adult

What to know about flights from Dulles Intl

Discover essential information about flights departing from Dulles Intl, including flight schedules, destinations, airlines operating at the Dulles Intl airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 30 4月 2025.

Good round-trip deal

S$ 8,843 or less

Good one-way deal

S$ 125 or less
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl.
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Cheapest flights from Dulles Intl
Explore the most affordable flight options available from Dulles Intl. Find the lowest fares based on data from user searches, with prices last updated on 30 4月 2025.

火 20-512:40IAD - BOS
Nonstop1h 39mUnited Airlines
水 28-505:30BOS - IAD
Nonstop1h 34mUnited Airlines
Deal found 28-4S$ 179
土 24-518:17IAD - BOS
1 stop4h 39mDelta
火 27-506:05BOS - IAD
1 stop5h 35mDelta
Deal found 29-4S$ 323
水 6-822:05IAD - LHR
1 stop30h 15mScandinavian Airlines
日 17-819:30LHR - IAD
1 stop29h 29mScandinavian Airlines
Deal found 29-4S$ 811
火 13-517:50IAD - LHR
Nonstop7h 30mDelta
金 30-511:30LHR - IAD
1 stop12h 45mDelta
Deal found 29-4S$ 815
金 17-1020:30IAD - LHR
1 stop10h 25mIcelandair
火 21-1013:05LHR - IAD
1 stop11h 15mIcelandair
Deal found 27-4S$ 819
火 7-1022:45IAD - LHR
Nonstop7h 20mFinnair
火 14-1012:45LHR - IAD
Nonstop8h 10mFinnair
Deal found 29-4S$ 829
火 3-615:40IAD - CUZ
2 stops20h 20mMultiple Airlines
水 11-612:15CUZ - IAD
3 stops36h 00mMultiple Airlines
Deal found 29-4S$ 846
水 3-918:40IAD - LHR
Nonstop7h 15mMultiple Airlines
月 22-917:10LHR - IAD
1 stop28h 05mMultiple Airlines
Deal found 28-4S$ 857
月 22-917:45IAD - LHR
1 stop11h 35mTAP AIR PORTUGAL
金 3-1006:00LHR - IAD
1 stop14h 20mTAP AIR PORTUGAL
Deal found 29-4S$ 858
日 10-822:20IAD - LHR
Nonstop7h 20mUnited Airlines
金 22-807:25LHR - IAD
1 stop17h 00mUnited Airlines
Deal found 28-4S$ 862
火 2-920:45IAD - LHR
1 stop14h 40mSWISS
水 10-906:00LHR - IAD
1 stop15h 15mSWISS
Deal found 28-4S$ 883
月 1-919:25IAD - LHR
Nonstop7h 20mBritish Airways
金 24-1017:00LHR - IAD
Nonstop8h 15mBritish Airways
Deal found 28-4S$ 918

Find flights from Dulles Intl within your budget

Find flights departing from Dulles Intl that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 30 4月 2025. In the last 7 days, Cheapflights users made a total of 200,618 searches

Fly to

Singapore

Route

Depart

Return

Price

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

火 20-5

12:40-14:19

Nonstop1h 39m

Boston Logan Intl

水 28-5

05:30-07:04

Nonstop1h 34m

S$ 179

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

土 24-5

18:17-22:56

1 stop4h 39m

Boston Logan Intl

月 26-5

06:05-11:40

1 stop5h 35m

S$ 323

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

水 6-8

22:05-09:20

1 stop30h 15m

London Heathrow

日 17-8

19:30-19:59

1 stop29h 29m

S$ 811

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

火 13-5

17:50-06:20

Nonstop7h 30m

London Heathrow

金 30-5

11:30-19:15

1 stop12h 45m

S$ 815

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

金 17-10

20:30-11:55

1 stop10h 25m

London Heathrow

火 21-10

13:05-19:20

1 stop11h 15m

S$ 819

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

火 7-10

22:45-11:05

Nonstop7h 20m

London Heathrow

火 14-10

12:45-15:55

Nonstop8h 10m

S$ 829

Washington, D.C.Cusco

IAD - CUZ

IADCUZ

Washington, D.C. Dulles Intl

火 3-6

15:40-11:00

2 stops20h 20m

Cusco Velazco Astete

水 11-6

12:15-01:15

3 stops36h 00m

S$ 846

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

水 3-9

18:40-06:55

Nonstop7h 15m

London Heathrow

月 8-9

12:10-16:15

1 stop33h 05m

S$ 857

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

月 22-9

17:45-10:20

1 stop11h 35m

London Heathrow

金 3-10

06:00-15:20

1 stop14h 20m

S$ 858

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

火 2-9

20:45-16:25

1 stop14h 40m

London Heathrow

水 10-9

06:00-16:15

1 stop15h 15m

S$ 883

Flights are sorted by cheapest return flights first.

Deals found on 29-4

Showing 1-10 of 57 results
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Best time to book a flight from Dulles Intl

Have a flexible travel schedule? Discover the best time to fly 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.

Travel insights for flights from Dulles Intl

Get recent, data-driven insights about flights from Dulles Intl including ideal travel times, pricing trends, and more.

When is the best time to book a flight from Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Singapore. Price data was last updated on 25 April 2025.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 56 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport (average of S$ 1,049). Flying from Washington, D.C. Dulles Intl Airport in July will prove the most costly (average of S$ 1,532). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

What are popular destinations to fly to from Washington, D.C. Dulles Intl Airport?

From Washington, D.C. Dulles Intl Airport you can expect to find greater availability for the following destinations: London (388 flights per day), Detroit (334 flights per day) and Atlanta (277 flights per day).

Frankfurt am Main

Frankfurt am Main

From S$ 930

Tokyo

Tokyo

From S$ 6,685

Doha Hamad Intl

Doha Hamad Intl

From S$ 1,224

Chicago

Chicago

From S$ 1,872

What is the cheapest place to fly to from Washington, D.C. Dulles Intl Airport?

The cheapest city to fly to from Washington, D.C. Dulles Intl Airport is San Francisco, with prices starting at S$ 310. Explore other affordable destinations below.

San Francisco

San Francisco

From S$ 237

Frankfurt am Main

Frankfurt am Main

From S$ 930

Doha Hamad Intl

Doha Hamad Intl

From S$ 1,224

Chicago

Chicago

From S$ 1,872

Airline reviews for flights from Dulles Intl

Get insights into the airlines that provide service from 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 airline for your flight from Dulles Intl. In the last 7 days, Cheapflights users made a total of 200,618 searches.
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Comfort

8.3

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,066 reviews
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Comfort

8.3

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very Good
732 reviews
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Comfort

8.3

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very Good
7,936 reviews
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Comfort

8.3

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.5
Good
852 reviews
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Comfort

8.3

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Qatar Airways
7.4
Good
3,563 reviews
Korean Air
8.4
Very Good
1,066 reviews
Check prices

Comfort

8.3

Boarding

8.5

Overall

8.4

Crew

8.7

Food

8.1

Entertainment

8.2

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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Alternate flight departure points to Dulles Intl

Consider leaving from one of these other departure points that are located a short distance from Dulles Intl. Flight origins were last updated on 30 4月 2025.
Flights from Reagan-National

Related info for your journey

Access useful and relevant information related to your journey from Dulles Intl. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 30 4月 2025.

  • What are the most popular destinations to fly to from Washington, D.C. Dulles Intl Airport?

    This month, the top selected destinations from Washington, D.C. Dulles Intl Airport are Cairo, Paris Charles de Gaulle Airport, Amsterdam. Throughout the year, Mumbai, Cairo, Ahmedabad are some of the top choices made by users flying from Washington, D.C. Dulles Intl Airport.

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to anywhere?

    Users have flown out of Washington, D.C. Dulles Intl Airport for as low as S$ 125 to DuBois, Pennsylvania (prices may vary depending on the airline and departure time). On average, users have booked flights for S$ 2,239 to fly from Washington, D.C. Dulles Intl Airport.

  • What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport?

    Currently, the cheapest month for flights from Washington, D.C. Dulles Intl Airport is January. The most expensive month for flights is July. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • Where are the cheapest places to fly to from Washington, D.C. Dulles Intl Airport?

    View the cheapest flight destinations from Washington, D.C. Dulles Intl Airport:
    Fly from Washington, D.C. to Singapore from S$ 979 round trip

  • How does Cheapflights help users find flights from Dulles Intl?

    Cheapflights helps you search for flights from Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

  • Why should you use Cheapflights to find cheap flight tickets from Dulles Intl?

    Cheapflights simply makes it quick and affordable to book flights from Dulles Intl by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

  • Can Cheapflights find flights from Dulles Intl with no change fees?

    Yes! Cheapflights helps users easily find flights from Dulles Intl with no change fees.

  • Can Cheapflights notify me if prices for flights from Dulles Intl become cheaper?

    Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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Cheapflights helps you search for flights from Dulles Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Dulles Intl?

Cheapflights simply makes it quick and affordable to book flights from Dulles Intl by bringing together all flight options from hundreds of airlines and agencies online — and we put them in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Dulles Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Dulles Intl with no change fees.

Can Cheapflights notify me if prices for flights from Dulles Intl become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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