Cheap flights from Washington, D.C. to Singapore from $447
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Singapore departing on 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
BaltimoreSingapore
BWI Baltimore/Washington - SIN Singapore Changi
BWISIN
Baltimore/Washington
Mon 11/16
9:53 am-8:45 am
2 stops33h 52m
Singapore Changi
Mon 11/23
11:15 pm-6:02 pm
2 stops31h 47m
BaltimoreSingapore
BWI Baltimore/Washington - SIN Singapore Changi
BWISIN
Baltimore/Washington
Mon 11/16
9:53 am-5:40 am
2 stops30h 47m
Singapore Changi
Sun 11/22
1:25 am-6:02 pm
2 stops29h 37m
Washington, D.C.Singapore
IAD Washington, D.C. Dulles Intl - SIN Singapore Changi
IADSIN
Washington, D.C. Dulles Intl
Thu 11/19
1:30 pm-6:50 am
1 stop28h 20m
Singapore Changi
Mon 11/30
11:15 pm-11:45 am
1 stop25h 30m
Washington, D.C.Singapore
IAD Washington, D.C. Dulles Intl - SIN Singapore Changi
IADSIN
Washington, D.C. Dulles Intl
Wed 3/3
1:30 pm-6:50 am
1 stop28h 20m
Singapore Changi
Sat 3/6
10:25 am-8:25 pm
1 stop47h 00m
Washington, D.C.Singapore
IAD Washington, D.C. Dulles Intl - SIN Singapore Changi
IADSIN
Washington, D.C. Dulles Intl
Tue 11/3
2:25 pm-9:35 am
1 stop30h 10m
Singapore Changi
Sat 11/14
7:25 pm-9:00 am
1 stop26h 35m
Washington, D.C.Singapore
IAD Washington, D.C. Dulles Intl - SIN Singapore Changi
IADSIN
Washington, D.C. Dulles Intl
Sun 11/1
2:25 pm-9:35 am
1 stop30h 10m
Singapore Changi
Sat 11/14
7:25 pm-9:00 am
1 stop26h 35m
Washington, D.C.Singapore
IAD Washington, D.C. Dulles Intl - SIN Singapore Changi
IADSIN
Washington, D.C. Dulles Intl
Sat 10/17
11:05 am-9:15 pm
1 stop22h 10m
Singapore Changi
Fri 10/23
3:35 pm-8:45 am
2 stops29h 10m
Washington, D.C.Singapore
IAD Washington, D.C. Dulles Intl - SIN Singapore Changi
IADSIN
Washington, D.C. Dulles Intl
Fri 10/23
9:00 pm-9:15 pm
1 stop36h 15m
Singapore Changi
Thu 10/29
3:15 am-4:55 pm
1 stop25h 40m
Washington, D.C.Singapore
IAD Washington, D.C. Dulles Intl - SIN Singapore Changi
IADSIN
Washington, D.C. Dulles Intl
Wed 11/4
8:13 am-5:00 am
2 stops31h 47m
Singapore Changi
Tue 11/10
1:40 am-9:50 am
1 stop21h 10m
Washington, D.C.Singapore
IAD Washington, D.C. Dulles Intl - SIN Singapore Changi
IADSIN
Washington, D.C. Dulles Intl
Mon 11/2
8:13 am-5:00 am
2 stops31h 47m
Singapore Changi
Mon 11/9
10:30 pm-9:50 am
1 stop24h 20m
See travel insights to Singapore from
How to get the cheapest flight ticket from Washington, D.C. to Singapore
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Washington, D.C. and Singapore?
Prices are currently low for flights on this route.
Typical prices usually range from $1,138 to $1,237.The lowest price recently found on this route was $1,061.
What is the cheapest month to fly to Singapore?
The month of February is, on average, the cheapest month to fly to Singapore from Washington, D.C., with most prices found around $970. If you aren’t able to travel to Singapore during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $1,138.
How far in advance should I book a flight from Washington, D.C. to Singapore?
You are more likely to see cheaper flights to Singapore from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,322 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Washington, D.C. for as low as $969 on momondo.
Can stopping save me money on Washington, D.C. to Singapore flights?
You could potentially save up to 10% on your flight if you consider stops on a Washington, D.C. to Singapore flight.
How have Washington, D.C. to Singapore flight prices changed over time?
As of October 2026, prices for Washington, D.C. to Singapore flights are approximately 16% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. to Singapore Changi?
Gulf Air, Korean Air, and Delta are the most popular carriers operating from Washington, D.C. to Singapore Changi
What airlines fly to Singapore?
Turkish Airlines, United Airlines and JetBlue are the top three most popular airlines that fly to Singapore from Washington, D.C. according to our data. Turkish Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 6 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Washington, D.C. and Singapore?
Doha (DOH) was the most common stop: 29% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Washington, D.C. to Singapore?
Flights via Incheon (ICN) offer the lowest average round-trip price of $1,089.
Which layover airport has the shortest travel time from Washington, D.C. to Singapore?
Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 21h 45m.
Which layover airport has the shortest connection time from Washington, D.C. to Singapore?
Taipei City (TPE) has the shortest average layover time for this route: 1h 30m.
When to book flights from Washington, D.C. to Singapore
Cheap Washington, D.C. to Singapore (WAS to SIN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Singapore
Frequently asked questions about flying from Washington, D.C. to Singapore
How far is Washington, D.C. to Singapore Changi by plane?
The straight-line distance from Washington, D.C. to Singapore Changi is 9651.2 mi. A reasonable flight in good conditions will take 22h 10m.
When did momondo last update prices for flights from Washington, D.C. to Singapore Changi Airport?
Prices for flights from Washington, D.C. to Singapore Changi Airport were last updated today.
How many operators does momondo search for flights from Washington, D.C. to Singapore Changi Airport?
As of October 2026, there are 6 operators available to choose from for flights from Washington, D.C. to Singapore Changi Airport.
How old do you have to be to fly from Washington, D.C. to Singapore Changi Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Singapore Changi Airport.
What documentation or ID do you need to fly to Singapore Changi Airport?
The travel and health documents you'll need for your trip to Singapore Changi Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Singapore Changi Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. to Singapore?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to Singapore is Turkish Airlines, representing 20% of all bookings. The subsequent popular airlines are JetBlue at 20%, United Airlines at 20%, and Qatar Airways at 14%.
Best airlines flying from Washington, D.C. to Singapore
Compare and see reviews for airlines that fly from Washington, D.C. to Singapore with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $835 | Free Cancellation | Rating 7.3 1,539 reviews | |||
| PriceFrom $938 | Free Cancellation | Rating 7.4 4,454 reviews | |||
| PriceFrom $987 | Free Cancellation | Rating 7.3 3,726 reviews | |||
| PriceFrom $1,069 | Free Cancellation | Rating 8.4 1,217 reviews | |||
| PriceFrom $1,125 | Free Cancellation | Rating 7.4 10,299 reviews | |||
| PriceFrom $1,314 | Free Cancellation | Rating 7.1 3,046 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Singapore?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Singapore. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Washington, D.C. to Singapore with flexible booking policies on momondo?
All flight searches from Washington, D.C. to Singapore on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Washington, D.C. to Singapore?
Once you have performed a search for Washington, D.C. to Singapore flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Washington, D.C. to Singapore right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Washington, D.C. to Singapore flights. All you need is a valid email address and we will do the rest; it is that quick and easy.