United flights to Singapore from Washington

View S$815 flight on Wed, 15 Apr, 2026Opens in a new window
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United flights from Washington to Singapore (IAD→SIN)

Prices were available within the past 7 days and start at S$815 for one-way flights and S$1,446 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 11 Mar - Wed, 18 Mar
IAD
Washington
SIN
Singapore
S$1,446 Return, found 3 hours ago
S$1,446
Return
found 3 hours ago
Select United flight, departing Wed, 11 Mar from Washington to Singapore, returning Wed, 18 Mar, priced at S$1,446 found 3 hours ago
United
Wed, 11 Mar - Tue, 24 Mar
IAD
Washington
SIN
Singapore
S$1,447 Return, found 1 day ago
S$1,447
Return
found 1 day ago
Select United flight, departing Wed, 11 Mar from Washington to Singapore, returning Tue, 24 Mar, priced at S$1,447 found 1 day ago
United
Sun, 25 Jan - Sun, 1 Feb
IAD
Washington
SIN
Singapore
S$1,451 Return, found 9 hours ago
S$1,451
Return
found 9 hours ago
Select United flight, departing Sun, 25 Jan from Washington to Singapore, returning Sun, 1 Feb, priced at S$1,451 found 9 hours ago
United
Sun, 18 Jan - Sun, 25 Jan
IAD
Washington
SIN
Singapore
S$1,458 Return, found 3 days ago
S$1,458
Return
found 3 days ago
Select United flight, departing Sun, 18 Jan from Washington to Singapore, returning Sun, 25 Jan, priced at S$1,458 found 3 days ago
United
Mon, 9 Mar - Thu, 12 Mar
IAD
Washington
SIN
Singapore
S$1,460 Return, found 3 days ago
S$1,460
Return
found 3 days ago
Select United flight, departing Mon, 9 Mar from Washington to Singapore, returning Thu, 12 Mar, priced at S$1,460 found 3 days ago

Find the cheapest month to fly from Washington (IAD) to Singapore (SIN)

September is typically the cheapest month to fly

From S$1,055 - S$1,503 per traveller.
Washington to Singapore route information
Origin airport
Washington Dulles Intl.
Destination airport
Changi
Airlines serving
Air Canada, Air France, All Nippon Airways, American Airlines, British Airways, Delta, Emirates, Ethiopian Airlines, Etihad Airways, KLM, Korean Air, Lufthansa, Malaysia Airlines, Qatar Airways, Saudia, Swiss International Air Lines, Turkish Airlines, United
Popular airline
Turkish Airlines
Distance
15439 km
*Available to Expedia members.