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Find cheap one-way flights from Washington D.C. to Singapore starting at US$539.

Book one-way or return flights from Washington D.C. to Singapore from as little as US$539. Choose from the popular airlines below and book your flight today!

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Washington D.C. to Singapore?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Washington D.C. to Singapore

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Saudia
From US$344
Etihad Airways
From US$445
Delta Air Lines
From US$465
Alaska Airlines
From US$548
Korean Air
From US$549
Qatar Airways
From US$555
Air India
From US$568
Virgin Atlantic
From US$575
United Airlines
From US$577
American Airlines
From US$577
ANA airlines

Find more flights and airlines

Find cheap flights from Washington D.C. to Singapore by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Washington D.C. to Singapore.

  • Cheapest
    Saudia
    IAD
    19:10
    37h 10m
    2 transfer
    SIN
    20:20
    Dulles International Airport - Singapore Changi Airport
    Sat, Apr 20Saudia
    US$344
  • American Airlines
    DCA
    07:49
    45h 46m
    2 transfer
    SIN
    17:35
    Ronald Reagan Washington National Airport - Singapore Changi Airport
    Sat, Apr 20American Airlines
    US$577
  • Malaysia Airlines
    IAD
    20:40
    31h 25m
    2 transfer
    XSP
    16:05
    Dulles International Airport - Seletar Airport
    Thu, Apr 4Malaysia Airlines
    US$671
  • Malaysia Airlines
    IAD
    20:40
    31h 25m
    2 transfer
    XSP
    16:05
    Dulles International Airport - Seletar Airport
    Thu, Apr 4Malaysia Airlines
    US$671
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Washington D.C. (WAS) to Singapore (SIN) the cheapest?

    Airlines adjust prices for flights from Washington D.C. to Singapore based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Washington D.C. (WAS) to Singapore (SIN) cost?

    According to Trip.com's data, the lowest price is around $1,742.
  • What is the transportation method from the main airport to downtown in Singapore?

    • The distance from Singapore Changi Airport to downtown is about 18km. It takes about 30 minutes by taxi.

Washington D.C. to Singapore Flight Information

Cheapest nonstop flight price

$538

Off-season for travel

March

Peak season for travel

June