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SIN - IAD

$485 Find cheap flights from Singapore to Washington Dulles Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Singapore to Dulles Intl departing on 10/21. 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.
1 adult
0 bags
Tue 6/4
Tue 6/11

Search hundreds of travel sites at once for deals on flights to Washington Dulles Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to Washington, D.C., as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Singapore to Washington, D.C., as well as popular online travel agencies
In the last 7 days travelers have searched 42,830,901 times on KAYAK, and here is why:

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Cheap flight deals from Singapore to Dulles Intl (SIN-IAD)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Singapore to Dulles Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:15 pm - 3:45 pmSIN-IAD
34h 30m1 stop
7:10 pm - 3:45 pmIAD-SIN
32h 35m1 stop
$817SAUDIA
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Sat, Oct 5 - Sat, Oct 12
8:45 am - 10:51 pmSIN-IAD
26h 06m2 stops
12:25 pm - 6:40 amIAD-SIN
30h 15m1 stop
$1,057United Airlines
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Wed, Jun 12 - Thu, Jul 25
9:50 pm - 11:37 pmSIN-IAD
37h 47m2 stops
6:00 am - 6:15 amIAD-SIN
36h 15m2 stops
$1,104American Airlines
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Wed, May 15 - Sun, Jul 14
8:05 am - 11:24 pmSIN-IAD
27h 19m2 stops
6:00 am - 6:15 amIAD-SIN
36h 15m2 stops
$1,107American Airlines
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Thu, Jun 27 - Sun, Jun 30
11:35 pm - 7:15 amSIN-IAD
43h 40m1 stop
10:15 am - 7:00 amIAD-SIN
31h 45m1 stop
$1,130Air India
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Mon, Oct 21 - Tue, Dec 3
11:25 pm - 2:45 pmSIN-IAD
27h 20m1 stop
12:45 pm - 8:35 amIAD-SIN
30h 50m1 stop
$1,141Turkish Airlines
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Tue, Oct 22 - Mon, Dec 2
11:25 pm - 2:45 pmSIN-IAD
27h 20m1 stop
9:50 pm - 5:55 pmIAD-SIN
32h 05m1 stop
$1,167Turkish Airlines
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Wed, Oct 16 - Sun, Oct 20
11:35 pm - 7:15 amSIN-IAD
43h 40m1 stop
11:15 am - 9:45 pmIAD-SIN
22h 30m1 stop
$1,170Air India
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Mon, May 27 - Sun, Jun 2
10:35 pm - 8:35 pmSIN-IAD
34h 00m1 stop
10:50 pm - 4:05 pmIAD-SIN
29h 15m1 stop
$1,192British Airways
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Sat, Sep 14 - Sun, Sep 22
11:20 pm - 3:55 pmSIN-IAD
28h 35m2 stops
10:50 pm - 5:45 pmIAD-SIN
30h 55m1 stop
$1,336British Airways
Find Deal
Wed, Oct 16 - Sun, Oct 20

Flights from Singapore to Dulles Intl - Travel Insights & Trends

Get data-powered insights and trends into flights from Singapore to Dulles Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Singapore to Washington Dulles Airport?

The average price of all flights from Singapore to Washington, D.C. Dulles Intl Airport clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Washington Dulles Airport on a Tuesday and more expensive on a Monday. On your return trip to Singapore, you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Singapore to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Singapore to Washington, D.C. Dulles Intl Airport is November, where tickets cost $1,098 on average. On the other hand, the most expensive months are July and December, where the average cost of tickets is $1,655 and $1,643 respectively.

How far in advance should I book a flight from Singapore to Washington, D.C. Dulles Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Singapore to Washington, D.C. Dulles Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Singapore to Washington, D.C. Dulles Intl Airport, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 77 days before departure.

Which airlines provide the cheapest flights from Singapore to Washington Dulles Airport?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Washington Dulles Airport from Singapore were found on SAUDIA ($485) and Air China ($522), and the lowest round-trip tickets were found on SAUDIA ($817) and United Airlines ($1,057).

Good to know

Low season

February

High season

December

Cheapest flight

$485
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from Singapore to Washington Dulles Airport

When to book flights from Singapore to Dulles Intl

Are your dates flexible? Find out the best times to travel from Singapore to Dulles Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Singapore to Washington Dulles Airport flights

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

    In the last 3 days, the lowest price for a flight from Singapore to Washington, D.C. Dulles Intl Airport was $485 for a one-way ticket and $817 for a round-trip.

  • Do I need a passport to fly between Singapore and Washington Dulles Airport?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Singapore and on arrival in Washington Dulles Airport.

  • Which aircraft models fly most regularly from Singapore to Washington Dulles Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Singapore to Washington Dulles Airport?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Singapore and Washington Dulles Airport, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Singapore to Washington, D.C., United Airlines or British Airways?

    The two airlines most popular with KAYAK users for flights from Singapore to Washington, D.C. are United Airlines and British Airways. With an average price for the route of $1,231 and an overall rating of 7.4, United Airlines is the most popular choice. British Airways is also a great choice for the route, with an average price of $1,372 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from Singapore to Washington Dulles Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Singapore to Washington Dulles Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Singapore to Washington Dulles Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Singapore is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Singapore to Washington Dulles Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Singapore with another airline. Booking your flights between Singapore and IAD can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Singapore to Washington Dulles Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Singapore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Singapore to Dulles Intl

 
See real verified KAYAK customer reviews for airlines flying from Singapore to Washington, D.C.. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Singapore to Dulles Intl? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 11118 reviews
7.2Comfort
8.1Crew
7.7Boarding
7.1Entertainment
6.7Food
Airline reviews

Only water and pretzels served on six hour flight. Did not see crew rest of flight. No video screens and so no wired audio. Poor sound on plan so did not understand anything said by crew. This is a safety issue. Electrical socket did not retain charging block so could not charge phone. No video screen so could not watch movies. Phone is not a substitute.

2.0 MediocreTed, May 2024STT - IAD
Read more about United Airlines reviews

Only water and pretzels served on six hour flight. Did not see crew rest of flight. No video screens and so no wired audio. Poor sound on plan so did not understand anything said by crew. This is a safety issue. Electrical socket did not retain charging block so could not charge phone. No video screen so could not watch movies. Phone is not a substitute.

The food that was offered based on class level of your ticket was absolutely ridiculous and disgusting. They didn't even hot tea to serve, the food was horrible. On our departure flight I was seated in premium plus economy and considering the cost of the flight the food was literally some of the worst I've ever eaten. On the return flight I sat in economy with extra leg room and was given a thin little throw "blanket" and a flimsy little pillow. The air condition was on artic and the seating arrangement wasn't really worth the money. The seat didn't recline good enough and the foot rest was laughable. Total waste.

All flights were on time and boarding was issue free

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

I like the non stop flight to Lagos. The cabin crew were great, the food was alright and the ride was smooth. The downside is there wasn’t wifi connection from Lagos to Washington as stated. The 11hrs flight, became boring at times because of no wifi.

It got me where I needed it to; not much more. It had no competition so that was why I chose it.

Plane didn’t even make it off the ground. We all had to get off and walk to a different terminal (lots of confusion) to get on a different plane. Landed fairly late, connections missed.

One of the best flying experiences I’ve ever had.

The flight cancellation and process for getting a new flight was not that clear. United also had some delays that were unexpected. I am the most disappointed by the fact that I originally bought a Lufthansa ticket, only to be flown by United.

Need to have more snacks for the duration and coffee.

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

Spending 10 hours on a flight with no video or wifi access due to issues per stewardess was not enjoyable nor acceptable. Will follow up directly with the airline as well

I really did not like being ordered to pull my shade down by the attendants. One of them was very rude to me about it, standing there until I closed it like I was a child brusquely reaching across me to close an adjoining one. They claim it was so people who wanted to could sleep. It’s a 10:30am flight not a red eye. Closing your shade or leaving it up for natural light should be a choice. Ruined my flight!

My baggage did not arrived with me. Took 3 days to get it after so may calls and follow up

The crew was very attentive and kept busy serving a variety of treats!

Terrible. Flight was 3 hours delayed and I missed my other flight to my final destination

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

perhaps eye contact with the cabin crew, instead of abruptness and an impatience to serve.

Book cheap flights from Singapore to Washington, D.C.

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Singapore to Washington, D.C. found on KAYAK in the last 72 hours.
10/21Mon
1 stopSAUDIA
34h 30mSIN-IAD
$485
6/28Fri
1 stopAir China
34h 55mSIN-IAD
$522
6/28Fri
2 stops
33h 30mSIN-IAD
$697
5/27Mon
1 stopTurkish Airlines
27h 20mSIN-IAD
$721
5/27Mon
3 stops
32h 45mSIN-IAD
$740
5/27Mon
2 stops
33h 50mSIN-IAD
$744
5/18Sat
1 stopTurkish Airlines
27h 20mSIN-IAD
$893
8/22Thu
1 stopUnited Airlines
28h 12mSIN-IAD
$1,031
8/2Fri
1 stopUnited Airlines
28h 04mSIN-IAD
$1,039
8/23Fri
1 stopBritish Airways
33h 10mSIN-IAD
$1,057

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Last minute flights from Singapore to Dulles Intl

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Singapore to Washington, D.C. that are departing in the next 10 days.
5/8Wed
multi-stopAmerican Airlines
26h 37mSIN-IAD
6/5Wed
multi-stopAmerican Airlines
30h 20mIAD-SIN
$1,107
5/9Thu
multi-stopAmerican Airlines
27h 32mSIN-IAD
6/5Wed
multi-stopAmerican Airlines
30h 20mIAD-SIN
$1,109
5/9Thu
multi-stop
25h 50mSIN-IAD
6/5Wed
multi-stop
35h 10mIAD-SIN
$1,253
5/9Thu
multi-stop
29h 45mSIN-IAD
6/5Wed
multi-stop
32h 10mIAD-SIN
$1,298
5/9Thu
multi-stopAustrian Airlines
29h 45mSIN-IAD
6/5Wed
multi-stopAustrian Airlines
38h 05mIAD-SIN
$1,302
5/9Thu
multi-stopSWISS
28h 40mSIN-IAD
6/5Wed
multi-stopSWISS
32h 10mIAD-SIN
$1,308
5/9Thu
multi-stop
29h 45mSIN-IAD
6/5Wed
multi-stop
32h 10mIAD-SIN
$1,329
5/8Wed
multi-stopQatar Airways
25h 55mSIN-IAD
6/5Wed
multi-stopQatar Airways
21h 50mIAD-SIN
$1,526
5/8Wed
multi-stopUnited Airlines
26h 26mSIN-IAD
5/17Fri
multi-stopUnited Airlines
30h 15mIAD-SIN
$4,309
5/8Wed
multi-stopUnited Airlines
28h 05mSIN-IAD
5/17Fri
multi-stopUnited Airlines
30h 15mIAD-SIN
$5,407

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Singapore - Washington Dulles Airport Flights

Departure:

Singapore (SIN)Singapore

Destination:

Washington Dulles Airport (IAD)United States

Return flight deals:

Washington Dulles Airport - Singapore

Cabin classes: