United flights to Singapore from Washington

View S$892 flight on Sun, 17 Aug, 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

United flights from Washington to Singapore (IAD→SIN)

Prices were available within the past 7 days and start at S$892 for one-way flights and S$1,561 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 27 Aug - Thu, 18 Sep
IAD
Washington
SIN
Singapore
S$1,561 Return, found 2 days ago
S$1,561
Return
found 2 days ago
Select United flight, departing Wed, 27 Aug from Washington to Singapore, returning Thu, 18 Sep, priced at S$1,561 found 2 days ago
United
Mon, 22 Dec - Thu, 8 Jan
IAD
Washington
SIN
Singapore
S$2,640 Return, found 1 hour ago
S$2,640
Return
found 1 hour ago
Select United flight, departing Mon, 22 Dec from Washington to Singapore, returning Thu, 8 Jan, priced at S$2,640 found 1 hour ago
Washington to Singapore route information
Origin airport
Washington Dulles Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air France, Air India, All Nippon Airways, American Airlines, British Airways, Cathay Pacific, Delta, Emirates, Ethiopian Airlines, Etihad Airways, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United
Popular airline
Swiss International Air Lines
Distance
15439 km
*Available to Expedia members.