S$ 104+ 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 24-11. 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
12 loka — 19 loka1
1 adult
1 adult, Economy

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 12 syyskuu 2025.

Good round-trip deal

S$ 254 or less

Good one-way deal

S$ 122 or less
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl.

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 12 syyskuu 2025.

ke 15-1006:15IAD - BOS
1 stop4h 53mUnited Airlines
pe 17-1005:30BOS - IAD
Nonstop1h 41mUnited Airlines
Deal found 10-9S$ 192
la 25-1008:30IAD - BOS
1 stop4h 55mUnited Airlines
su 9-1105:30BOS - IAD
Nonstop1h 43mUnited Airlines
Deal found 11-9S$ 194
ke 15-1008:50IAD - BOS
Nonstop1h 41mUnited Airlines
su 19-1005:30BOS - IAD
Nonstop1h 41mUnited Airlines
Deal found 10-9S$ 195
ti 11-1122:07IAD - BOS
Nonstop1h 35mUnited Airlines
pe 14-1105:30BOS - IAD
Nonstop1h 43mUnited Airlines
Deal found 11-9S$ 196
ke 1-1012:35IAD - BOS
Nonstop1h 41mUnited Airlines
to 2-1016:23BOS - IAD
1 stop4h 48mUnited Airlines
Deal found 10-9S$ 198
la 4-1006:15IAD - BOS
1 stop3h 29mUnited Airlines
ke 15-1010:34BOS - IAD
1 stop5h 31mUnited Airlines
Deal found 11-9S$ 199
ti 30-922:19IAD - BOS
Nonstop1h 40mUnited Airlines
pe 3-1010:34BOS - IAD
1 stop5h 31mUnited Airlines
Deal found 11-9S$ 200
ke 24-922:18IAD - BOS
Nonstop1h 39mUnited Airlines
ke 1-1019:08BOS - IAD
Nonstop1h 44mUnited Airlines
Deal found 11-9S$ 201
ma 29-922:19IAD - BOS
Nonstop1h 40mUnited Airlines
la 4-1009:30BOS - IAD
Nonstop1h 44mUnited Airlines
Deal found 11-9S$ 203
la 25-1017:16IAD - BOS
Nonstop1h 40mUnited Airlines
la 1-1105:30BOS - IAD
Nonstop1h 43mUnited Airlines
Deal found 10-9S$ 204
ti 7-1022:19IAD - BOS
Nonstop1h 40mUnited Airlines
to 9-1005:30BOS - IAD
Nonstop1h 41mUnited Airlines
Deal found 10-9S$ 205
pe 24-1006:15IAD - BOS
1 stop4h 53mUnited Airlines
la 25-1017:19BOS - IAD
1 stop5h 39mUnited Airlines
Deal found 10-9S$ 207

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 12 syyskuu 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

la 4-10

06:15-09:44

1 stop3h 29m

Boston Logan Intl

ke 15-10

10:34-16:05

1 stop5h 31m

S$ 199

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

pe 26-9

08:30-13:25

1 stop4h 55m

Boston Logan Intl

ti 30-9

19:08-20:52

Nonstop1h 44m

S$ 201

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

la 15-11

08:45-12:29

1 stop3h 44m

Boston Logan Intl

ma 17-11

18:25-22:58

1 stop4h 33m

S$ 207

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

ke 15-10

22:19-23:59

Nonstop1h 40m

Boston Logan Intl

pe 17-10

05:30-07:11

Nonstop1h 41m

S$ 207

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

ti 30-9

06:15-11:08

1 stop4h 53m

Boston Logan Intl

ti 30-9

16:23-21:11

1 stop4h 48m

S$ 214

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

to 6-11

06:00-10:43

1 stop4h 43m

Boston Logan Intl

ti 11-11

11:59-16:25

1 stop4h 26m

S$ 224

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

to 23-10

06:15-11:07

1 stop4h 52m

Boston Logan Intl

ma 27-10

05:30-07:13

Nonstop1h 43m

S$ 227

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

ma 17-11

17:33-22:47

1 stop5h 14m

Boston Logan Intl

ti 18-11

16:20-20:57

1 stop4h 37m

S$ 227

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

la 8-11

22:07-23:42

Nonstop1h 35m

Boston Logan Intl

ti 11-11

05:30-07:13

Nonstop1h 43m

S$ 240

Washington, D.C.Boston

IAD - BOS

IADBOS

Washington, D.C. Dulles Intl

ma 20-10

22:19-23:59

Nonstop1h 40m

Boston Logan Intl

la 25-10

05:30-07:11

Nonstop1h 41m

S$ 242

Flights are sorted by cheapest return flights first.

Deals found on 10-9

Showing 1-10 of 60 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 29 August 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$ 1,011). Flying from Washington, D.C. Dulles Intl Airport in June will prove the most costly (average of S$ 1,470). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

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 Qatar Airways. 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.

Boarding

7.5

Entertainment

7.4

Comfort

7.4

Food

7.3

Crew

7.9

Overall

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

Boarding

7.5

Entertainment

7.4

Comfort

7.4

Food

7.3

Crew

7.9

Overall

7.4

Reviews

1 / 20
6.0
Good

Chris,Jul 2025

DFW - DOH

Too crammed for the amount you have to pay. That was very uncomfortable

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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 12 syyskuu 2025.

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 12 syyskuu 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 Athens, Cairo, Paris Charles de Gaulle Airport. 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$ 122 to DuBois, Pennsylvania (prices may vary depending on the airline and departure time). On average, users have booked flights for S$ 897 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$ 1,117 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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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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