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S$ 102+ 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 3-9. 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
4 Aug — 11 Aug1
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 July 2025.

Good round-trip deal

S$ 255 or less

Good one-way deal

S$ 123 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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Find flights from Dulles Intl

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 July 2025.

Mon 1-906:20IAD - BOS
1 stop4h 57mUnited Airlines
Wed 3-919:12BOS - IAD
Nonstop1h 43mUnited Airlines
Deal found 28-7S$ 189
Sun 21-922:25IAD - LHR
Nonstop7h 15mUnited Airlines
Mon 13-1009:05LHR - IAD
1 stop34h 30mUnited Airlines
Deal found 28-7S$ 646
Fri 26-922:05IAD - LHR
2 stops15h 25mScandinavian Airlines
Sun 28-910:35LHR - IAD
2 stops14h 24mScandinavian Airlines
Deal found 29-7S$ 655
Wed 1-1017:50IAD - LHR
Nonstop7h 30mDelta
Wed 29-1011:30LHR - IAD
1 stop12h 45mDelta
Deal found 28-7S$ 657
Tue 23-919:25IAD - LHR
Nonstop7h 20mBritish Airways
Tue 30-917:00LHR - IAD
Nonstop8h 10mBritish Airways
Deal found 29-7S$ 664
Mon 1-920:45IAD - LHR
1 stop17h 35mSWISS
Mon 8-917:10LHR - IAD
1 stop28h 05mSWISS
Deal found 27-7S$ 668
Sun 10-822:20IAD - LHR
Nonstop7h 20mMultiple Airlines
Tue 19-811:05LHR - IAD
1 stop31h 25mMultiple Airlines
Deal found 28-7S$ 670
Sat 11-1020:30IAD - LHR
1 stop10h 25mIcelandair
Wed 15-1013:05LHR - IAD
1 stop11h 15mIcelandair
Deal found 28-7S$ 673
Wed 20-817:35IAD - LHR
1 stop11h 40mBrussels Airlines
Thu 11-906:50LHR - IAD
1 stop11h 40mBrussels Airlines
Deal found 28-7S$ 688
Fri 23-122:30IAD - LHR
1 stop18h 05mTAP AIR PORTUGAL
Sat 31-106:00LHR - IAD
1 stop14h 15mTAP AIR PORTUGAL
Deal found 28-7S$ 715
Sun 9-1110:05IAD - CUZ
2 stops14h 40mDelta
Wed 12-1105:00CUZ - IAD
2 stops35h 36mDelta
Deal found 27-7S$ 771
Wed 27-812:50IAD - SIN
1 stop30h 25mAir India
Mon 8-923:00SIN - IAD
1 stop44h 40mAir India
Deal found 28-7S$ 1,007

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 July 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

Mon 1-9

06:20-11:17

1 stop4h 57m

Boston Logan Intl

Wed 3-9

19:12-20:55

Nonstop1h 43m

S$ 189

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 21-9

22:25-10:40

Nonstop7h 15m

London Heathrow

Mon 13-10

09:05-14:35

1 stop34h 30m

S$ 646

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 26-9

22:05-18:30

2 stops15h 25m

London Heathrow

Sun 28-9

10:35-19:59

2 stops14h 24m

S$ 655

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 1-10

17:50-06:20

Nonstop7h 30m

London Heathrow

Wed 29-10

11:30-20:15

1 stop12h 45m

S$ 657

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 23-9

19:25-07:45

Nonstop7h 20m

London Heathrow

Tue 30-9

17:00-20:10

Nonstop8h 10m

S$ 664

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 1-9

20:45-19:20

1 stop17h 35m

London Heathrow

Mon 8-9

17:10-16:15

1 stop28h 05m

S$ 668

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 10-8

22:20-10:40

Nonstop7h 20m

London Heathrow

Tue 19-8

11:05-13:30

1 stop31h 25m

S$ 670

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sat 11-10

20:30-11:55

1 stop10h 25m

London Heathrow

Wed 15-10

13:05-19:20

1 stop11h 15m

S$ 673

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 20-8

17:35-10:15

1 stop11h 40m

London Heathrow

Thu 11-9

06:50-13:30

1 stop11h 40m

S$ 688

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 23-1

22:30-21:35

1 stop18h 05m

London Heathrow

Sat 31-1

06:00-15:15

1 stop14h 15m

S$ 715

Flights are sorted by cheapest return flights first.

Deals found on 28-7

Showing 1-10 of 33 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 July 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 82 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$ 1,024). Flying from Washington, D.C. Dulles Intl Airport in June will prove the most costly (average of S$ 1,475). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Washington, D.C. Dulles Intl Airport?

When flying from Washington, D.C. Dulles Intl Airport check dates and pricing for the following: Qatar Airways. As it departs for the following popular destinations: Singapore.

Qatar Airways
Qatar Airways
From S$ 1,447

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: Chicago (350 flights per day), London (316 flights per day) and Atlanta (260 flights per day).

Frankfurt am Main
Frankfurt am Main
From S$ 930
Doha Hamad Intl
Doha Hamad Intl
From S$ 1,224
San Francisco
San Francisco
From S$ 1,002

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 Las Vegas Harry Reid Intl, with prices starting at S$ 244. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From S$ 190
Frankfurt am Main
Frankfurt am Main
From S$ 930
San Francisco
San Francisco
From S$ 1,002

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.
Read through reviews of airlines serving Washington, D.C. Dulles Intl Airport, such as Alaska Airlines, Etihad Airways, andTurkish Airlines. 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.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Etihad Airways
7.4
Good
1,228 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Turkish Airlines
7.3
Good
3,926 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Air Canada
7.1
Good
9,826 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
IndiGo
6.8
Okay
478 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Food

7.1

Overall

8.0

Boarding

8.1

Crew

8.5

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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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 July 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 July 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, Bengaluru, Athens. 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$ 123 to DuBois, Pennsylvania (prices may vary depending on the airline and departure time). On average, users have booked flights for S$ 1,011 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 June. 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$ 1,024 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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