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Cheap flights from Singapore to Washington from $419

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Singapore to Washington departing on 1/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
China Airlines Logo
2:25 pm - 6:10 pm
SIN
-
SEA
19h 45m1 stop
China Airlines Logo
12:10 am - 1:05 pm
SEA
-
SIN
20h 55m1 stop
$746China Airlines
Mon, Feb 9 - Sun, Feb 15
China Airlines Logo
2:25 pm - 6:10 pm
SIN
-
SEA
19h 45m1 stop
China Airlines Logo
12:10 am - 1:05 pm
SEA
-
SIN
20h 55m1 stop
$750China Airlines
Mon, Feb 9 - Sun, Feb 15
China Airlines Logo
2:25 pm - 6:10 pm
SIN
-
SEA
19h 45m1 stop
China Airlines Logo
12:10 am - 1:05 pm
SEA
-
SIN
20h 55m1 stop
$756China Airlines
Thu, Jan 29 - Sun, Feb 22
Korean Air Logo
10:30 pm - 9:00 am
SIN
-
SEA
26h 30m1 stop
Korean Air Logo
11:00 am - 5:00 am
SEA
-
SIN
26h 00m1 stop
$766Korean Air
Fri, Feb 6 - Thu, Feb 19
Korean Air Logo
1:35 am - 9:00 am
SIN
-
SEA
23h 25m1 stop
Korean Air Logo
12:50 pm - 11:40 pm
SEA
-
SIN
19h 50m1 stop
$769Korean Air
Tue, Mar 3 - Tue, May 5
China Airlines Logo
2:25 pm - 7:10 pm
SIN
-
SEA
19h 45m1 stop
China Airlines Logo
1:15 am - 12:35 pm
SEA
-
SIN
20h 20m1 stop
$771China Airlines
Sat, Mar 21 - Mon, Mar 30
United Airlines Logo
10:10 am - 9:12 pm
SIN
-
SEA
27h 02m1 stop
United Airlines Logo
9:19 am - 8:00 am
SEA
-
SIN
30h 41m1 stop
$779United Airlines
Mon, Jan 26 - Sat, Feb 28
Air Canada Logo
8:50 am - 6:30 pm
SIN
-
PDX
25h 40m1 stop
Air Canada Logo
9:50 am - 11:15 am
PDX
-
SIN
33h 25m2 stops
$936Air Canada
Thu, Jan 22 - Mon, Jan 26
Air Canada Logo
8:50 am - 2:40 pm
SIN
-
PDX
21h 50m1 stop
Air Canada Logo
7:00 pm - 2:50 pm
PDX
-
SIN
27h 50m2 stops
$937Air Canada
Thu, Jan 22 - Mon, Jan 26
United Airlines Logo
10:20 pm - 12:39 am
SIN
-
PDX
18h 19m1 stop
United Airlines Logo
1:35 pm - 8:00 am
PDX
-
SIN
26h 25m1 stop
$1,295United Airlines
Thu, Jan 22 - Mon, Jan 26

China Airlines flights from Singapore to State of Washington

Our best China Airlines deals on Singapore to State of Washington flight tickets
China Airlines
Feb 9
SIN2:25 pmSingapore Changi
19h 45m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
Feb 15
SEA12:10 amSeattle/Tacoma Intl
20h 55m
1 stop
SIN1:05 pmSingapore Changi
$746
Find similar
China Airlines
Feb 9
SIN2:25 pmSingapore Changi
19h 45m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
Feb 15
SEA12:10 amSeattle/Tacoma Intl
20h 55m
1 stop
SIN1:05 pmSingapore Changi
$750
Find similar
China Airlines
Jan 29
SIN2:25 pmSingapore Changi
19h 45m
1 stop
SEA6:10 pmSeattle/Tacoma Intl
Feb 22
SEA12:10 amSeattle/Tacoma Intl
20h 55m
1 stop
SIN1:05 pmSingapore Changi
$756
Find similar

Singapore Airlines flights from Singapore to State of Washington

Our best Singapore Airlines deals on Singapore to State of Washington flight tickets
Singapore Airlines
Mar 21
SIN9:00 amSingapore Changi
14h 10m
SEA8:10 amSeattle/Tacoma Intl
Mar 31
SEA10:15 amSeattle/Tacoma Intl
16h 20m
SIN5:35 pmSingapore Changi
$878
Find similar
Singapore Airlines
Feb 6
SIN9:00 amSingapore Changi
14h 10m
SEA7:10 amSeattle/Tacoma Intl
Feb 21
SEA8:45 amSeattle/Tacoma Intl
17h 00m
SIN5:45 pmSingapore Changi
$910
Find similar
Singapore Airlines
Feb 6
SIN9:00 amSingapore Changi
14h 10m
SEA7:10 amSeattle/Tacoma Intl
Feb 19
SEA8:45 amSeattle/Tacoma Intl
17h 00m
SIN5:45 pmSingapore Changi
$912
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Singapore to State of Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 28, 2025.
Use the filters below to find and compare flights from Singapore to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Mon 2/9

2:25 pm-6:10 pm

1 stop19h 45m

Seattle/Tacoma Intl

Sun 2/15

12:10 am-1:05 pm

1 stop20h 55m

$746

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Mon 2/9

2:25 pm-6:10 pm

1 stop19h 45m

Seattle/Tacoma Intl

Sun 2/15

12:10 am-1:05 pm

1 stop20h 55m

$750

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Thu 1/29

2:25 pm-6:10 pm

1 stop19h 45m

Seattle/Tacoma Intl

Sun 2/22

12:10 am-1:05 pm

1 stop20h 55m

$756

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Fri 2/6

10:30 pm-9:00 am

1 stop26h 30m

Seattle/Tacoma Intl

Thu 2/19

11:00 am-5:00 am

1 stop26h 00m

$766

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Tue 3/3

1:35 am-9:00 am

1 stop23h 25m

Seattle/Tacoma Intl

Tue 5/5

12:50 pm-11:40 pm

1 stop19h 50m

$769

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Sat 3/21

2:25 pm-7:10 pm

1 stop19h 45m

Seattle/Tacoma Intl

Mon 3/30

1:15 am-12:35 pm

1 stop20h 20m

$771

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Mon 1/26

10:10 am-9:12 pm

1 stop27h 02m

Seattle/Tacoma Intl

Sat 2/28

9:19 am-8:00 am

1 stop30h 41m

$779

SingaporePortland

SIN - PDX

SINPDX

Singapore Changi

Thu 1/22

8:50 am-6:30 pm

1 stop25h 40m

Portland

Mon 1/26

9:50 am-11:15 am

2 stops33h 25m

$936

SingaporePortland

SIN - PDX

SINPDX

Singapore Changi

Thu 1/22

8:50 am-2:40 pm

1 stop21h 50m

Portland

Mon 1/26

7:00 pm-2:50 pm

2 stops27h 50m

$937

SingaporePortland

SIN - PDX

SINPDX

Singapore Changi

Thu 1/22

10:20 pm-12:39 am

1 stop18h 19m

Portland

Mon 1/26

1:35 pm-8:00 am

1 stop26h 25m

$1,295

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington from

How to get the cheapest flight ticket from Singapore to State of Washington

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to State of Washington?

The month of October is, on average, the cheapest month to fly to State of Washington from Singapore, with most prices found around $781. If you aren’t able to travel to State of Washington during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $831.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Singapore to State of Washington is on a Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $920. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Singapore to State of Washington for around $1,471.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is at noon when flights can be purchased for as low as $847. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,156 on average. Flights to State of Washington from Singapore in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Singapore Changi to Washington flight route?

Fly from Singapore Changi to Seattle/Tacoma Intl for the best Singapore Changi - Washington flight prices

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Singapore when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $872 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Singapore for as low as $805 on momondo.

What cabin class options are available on Singapore Changi to Washington flights?

There are 3 cabin classes available to choose from on Singapore Changi to Washington flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Singapore to State of Washington flights?

No. A direct flight is the cheapest option for a flight between Singapore to State of Washington.

Cheap Singapore to State of Washington flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Singapore to State of Washington

Fastest flight time

14h 10m

Direct flights

Mon, Wed, Fri, Sat and Sun

Airports in State of Washington

96 airports
The fastest flight from Singapore to State of Washington takes 14h 10m
Direct flights go from Singapore to State of Washington on Monday, Wednesday, Friday, Saturday and Sunday. The only airline offering direct flights is Singapore Airlines.
There are 96 airports in State of Washington. From Singapore there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

  • When did momondo last update prices for flights from Singapore Changi Airport to Washington?

    Prices for flights from Singapore Changi Airport to Washington were last updated today.

  • How many operators does momondo search for flights from Singapore Changi Airport to Washington?

  • How old do you have to be to fly from Singapore Changi Airport to Washington?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Singapore Changi Airport to Washington.

  • What documentation or ID do you need to fly to Washington?

    The travel and health documents required for your trip to Washington can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Singapore to State of Washington?

Best airlines flying from Singapore to State of Washington

Compare and see reviews for airlines that fly from Singapore to State of Washington with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $761Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
EVA AirPriceFrom $779Free CancellationRating
8.4
1,304 reviews
Search EVA Air flights
STARLUX AirlinesPriceFrom $785Free CancellationRating
8.9
250 reviews
Search STARLUX Airlines flights
Singapore AirlinesPriceFrom $833Free CancellationRating
8.1
1,421 reviews
Search Singapore Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Singapore to Washington?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Singapore to Washington. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Singapore to Washington with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Washington from Singapore with this policy.

How can momondo help me find flights from Singapore to Washington?

Once all potential Singapore to Washington flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Singapore to Washington right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Singapore to Washington flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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