United Airlines flights from Seattle to Singapore (SEA - SIN)
SEA — SIN
29 Nov — 6 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Find United Airlines flight deals from Seattle to Singapore
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Cheapest United Airlines flights from Seattle to Singapore
Explore the most affordable United Airlines flight options available from Seattle to Singapore. Find the lowest fares with prices last updated on 30 October 2026.
Wed 11-1107:00 -
1 stop21h 15m
Mon 16-1122:20 -
1 stop27h 20m
Deal found 29-10S$ 1,013
Mon 2-1107:00 -
1 stop21h 15m
Mon 9-1122:20 -
1 stop18h 39m
Deal found 28-10S$ 1,014
Sun 1-1107:00 -
1 stop21h 15m
Thu 5-1110:10 -
2 stops27h 40m
Deal found 29-10S$ 1,019
Best United Airlines flights from Seattle to Singapore
Discover carefully curated United Airlines flight deals from Seattle to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.
Mon 30-1115:40 -
1 stop23h 15m
Fri 4-1210:10 -
1 stop24h 18m
Deal found 26-10S$ 1,021
Mon 19-411:44 -
1 stop28h 01m
Tue 27-411:05 -
1 stop18h 20m
Deal found 27-10S$ 1,023
Tue 12-115:45 -
1 stop23h 10m
Wed 20-110:45 -
1 stop18h 35m
Deal found 28-10S$ 1,023
Last-minute United Airlines flights from Seattle to Singapore
Discover last-minute United Airlines flight deals from Seattle to Singapore. Data last updated 30 October 2026 and is based on user searches.
Wed 11-1107:00 -
1 stop21h 15m
Mon 16-1122:20 -
1 stop27h 20m
Deal found 29-10S$ 1,013
Mon 2-1107:00 -
1 stop21h 15m
Mon 9-1122:20 -
1 stop18h 39m
Deal found 28-10S$ 1,014
Sun 1-1107:00 -
1 stop21h 15m
Thu 5-1110:10 -
2 stops27h 40m
Deal found 29-10S$ 1,019
One-way United Airlines flights to Singapore
Search for one-way United Airlines flight options to Singapore. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.
Tue 24-1107:00 -
1 stop21h 15m
Wed 31-1200:00 -
Nonstop0h 00m
Deal found 30-10S$ 484
Sun 8-1115:40 -
1 stop23h 15m
Wed 31-1200:00 -
Nonstop0h 00m
Deal found 28-10S$ 490
Fri 16-406:29 -
2 stops27h 16m
Wed 31-1200:00 -
Nonstop0h 00m
Deal found 27-10S$ 501
Can I get a flight from Seattle to Singapore on United Airlines for under S$ 1,024?
Cheapflights users have found 7 United Airlines flights for under S$ 1,024 on the SEA-SIN route. Prices on flights to Singapore from Seattle can vary based on many factors including dates. To look at price based on your preferred dates, click here.
United Airlines flights from Seattle to Singapore in 2026
Find detailed information about United Airlines flights from Seattle to Singapore. Explore the options provided by United Airlines to plan your journey from Seattle to Singapore. Data last updated 30 October 2026.
Which month is the cheapest to fly Economy class from Seattle to Singapore?
For Economy class flights, the cheapest month to fly this route is March. The most expensive months are April and November.
Rainfall in Singapore by month
Plan your trip to Singapore by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Singapore ranges from 150.0 - 269.0 inches per month. December is typically the wettest month, when rainfall can reach 269.0 mm. July is typically the driest time to visit Singapore when rainfall is around 150.0 mm.
Temperature in Singapore by month
Plan your trip to Singapore by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.0 C).
Best time to book a flight from Seattle to Singapore
Have a flexible travel schedule? Discover the best time to fly to Singapore from Seattle with our price prediction graph.
SEA-SIN
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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Fly from Seattle to Singapore on another airline
Consider alternative airlines that service the Singapore area. Flight routes are based on user searches made on Cheapflights and were last updated on 30 October 2026.
If Singapore is not for you, choose from these other destinations located in Asia. Flight routes are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Browse through some of the most popular routes that United Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Read reviews and see what other travellers are saying about their experiences with United Airlines. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing United Airlines for your next flight. Reviews last updated 30 October 2026.
Too crowded need more legroom and space between seats
10.0
Wonderful|Oct 2026
Is good
10.0
Wonderful|Sept 2026
Everything was good
8.0
Very Good|Sept 2026
The flight was on time and boardi g was very organized and timely. Snacks are awful and having one little glass of juice was terrible. Fortunately, I had my water to keep me hydrated.
1 out of 3334
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