How do most travelers feel about United Airlines?

The average rating from 1,365 United Airlines reviews by Cheapflights users is 8.1 (out of a maximum rating of 10). If you are considering flying SEA-SIN with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to Singapore with United Airlines.

Can I get a flight from Seattle to Singapore on United Airlines for under S$ 900?

Cheapflights users have found 11 United Airlines flights for under S$ 900 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.

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.

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).

S$ 499+ United Airlines Flights from Seattle to Singapore

Cheapflights users flying from Seattle to Singapore on United Airlines typically fly into Singapore Changi and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

United Airlines flights from Seattle to Singapore in 2025

One-way from	S$ 499
Return from	S$ 932
Popular in	December
Cheapest in	February
Average price (all airlines)	S$ 1,054

United Airlines
11-11
1 total stop
26h 40m total
Seattle to Singapore

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United Airlines
30-10-13-11
3 total stops
50h 48m total
Seattle to Singapore

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Highest demand for flights from Seattle/Tacoma Intl to Singapore Changi; 12% potential price increase.

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Best time to find cheap flights from Seattle/Tacoma Intl to Singapore Changi; 5% potential price drop.

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Average price for all Seattle/Tacoma Intl to Singapore Changi flights (one-way and round-trip).

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Can I get a flight from Seattle to Singapore on United Airlines for under S$ 900?
Cheapflights users have found 11 United Airlines flights for under S$ 900 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.
How do most travelers feel about United Airlines?
The average rating from 1,365 United Airlines reviews by Cheapflights users is 8.1 (out of a maximum rating of 10). If you are considering flying SEA-SIN with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to Singapore with United Airlines.

Find United Airlines flight deals from Seattle to Singapore

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 12 September 2025.

Thu 30-1005:30SEA - SIN

1 stop23h 45mUnited Airlines

Thu 13-1110:10SIN - SEA

2 stops27h 03mUnited Airlines

Deal found 12-9S$ 932

Mon 29-915:28SEA - SIN

1 stop23h 47mUnited Airlines

Thu 2-1011:20SIN - SEA

1 stop18h 05mUnited Airlines

Deal found 10-9S$ 968

Tue 23-907:00SEA - SIN

1 stop20h 25mUnited Airlines

Thu 9-1008:45SIN - SEA

1 stop25h 00mUnited Airlines

Deal found 11-9S$ 970

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 12 September 2025.

Thu 30-1005:30SEA - SIN

1 stop23h 45mUnited Airlines

Thu 13-1110:10SIN - SEA

2 stops27h 03mUnited Airlines

Deal found 12-9S$ 932

Tue 30-905:00SEA - SIN

1 stop22h 25mUnited Airlines

Tue 7-1011:05SIN - SEA

1 stop18h 20mUnited Airlines

Deal found 10-9S$ 968

Mon 29-915:28SEA - SIN

1 stop23h 47mUnited Airlines

Thu 2-1011:20SIN - SEA

1 stop18h 05mUnited Airlines

Deal found 10-9S$ 968

Last-minute United Airlines flights from Seattle to Singapore
Discover last-minute United Airlines flight deals from Seattle to Singapore. Data last updated 12 September 2025 and is based on user searches.

Thu 30-1005:30SEA - SIN

1 stop23h 45mUnited Airlines

Thu 13-1110:10SIN - SEA

2 stops27h 03mUnited Airlines

Deal found 12-9S$ 932

Mon 29-915:28SEA - SIN

1 stop23h 47mUnited Airlines

Thu 2-1011:20SIN - SEA

1 stop18h 05mUnited Airlines

Deal found 10-9S$ 968

Tue 23-907:00SEA - SIN

1 stop20h 25mUnited Airlines

Thu 9-1008:45SIN - SEA

1 stop25h 00mUnited Airlines

Deal found 11-9S$ 970

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 12 September 2025.

Tue 11-1113:20SEA - SIN

1 stop26h 40mUnited Airlines

Deal found 11-9S$ 499

Mon 22-906:25SEA - SIN

2 stops32h 50mUnited Airlines

Deal found 10-9S$ 504

Tue 30-905:00SEA - SIN

1 stop22h 25mUnited Airlines

Deal found 12-9S$ 510

Travel insights for United Airlines flights from Seattle to Singapore

Get recent, data-driven insights about United Airlines flights from Seattle to Singapore, including ideal travel times, pricing trends, and more.

Prices

What is the cheapest month to book a flight from Seattle to Singapore with United Airlines?

Currently, the most affordable month to book a United Airlines flight from Seattle to Singapore in August, with an average price of S$ 872. Conversely, traveling with United Airlines from Seattle to Singapore in June will be the most expensive, with an average cost of S$ 1,351. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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.

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.

Browse thousands of different options on Cheapflights for your next trip

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See what others are saying about United Airlines

United Airlines

7.4

Good

8,937 reviews

Check prices

Overview

Recent reviews

10.0

Wonderful|Sept 2025

Lufthansa was amazing, I wish United States based airlines operated like them.

2.0

Poor|Jul 2025

Awful

10.0

Wonderful|Jun 2025

I very love and happy with ANA and Sevice very super good .Thank you ANA

4.0

Mediocre|Apr 2025

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

4.0

Mediocre|Mar 2025

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

1 out of 2979

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United Airlines flights from Seattle to Singapore (SEA - SIN)

Cheapflights users flying from Seattle to Singapore on United Airlines typically fly into Singapore Changi and depart from Seattle/Tacoma Intl. Select your dates above for pricing.

United Airlines flights from Seattle to Singapore in 2025

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 12 September 2025.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

Can I get a flight from Seattle to Singapore on United Airlines for under S$ 900?

How do most travelers feel about United Airlines?

Find United Airlines flight deals from Seattle to Singapore

Cheapest United Airlines flights from Seattle to SingaporeExplore the most affordable United Airlines flight options available from Seattle to Singapore. Find the lowest fares with prices last updated on 12 September 2025.

Explore the most affordable United Airlines flight options available from Seattle to Singapore. Find the lowest fares with prices last updated on 12 September 2025.

Travel insights for United Airlines flights from Seattle to Singapore

Get recent, data-driven insights about United Airlines flights from Seattle to Singapore, including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seattle to Singapore with United Airlines?

Rainfall in Singapore by month

Temperature in Singapore by month

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.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 12 September 2025.

See what others are saying about United Airlines

Overview

100% Free

Book with Flexibility

Travel Smart

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 12 September 2025.