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Cheap flights from Singapore to Washington from $401

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 10/29. 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

United Airlines Logo
8:45 am - 1:33 pmSIN-SEA
19h 48m1 stop
United Airlines Logo
5:35 pm - 6:25 pmSEA-SIN
33h 50m1 stop
$609United Airlines
Find Deal
Wed, Aug 27 - Sat, Aug 30
Philippine Airlines Logo
8:00 pm - 7:15 pmSIN-SEA
38h 15m1 stop
Philippine Airlines Logo
9:30 pm - 7:10 pmSEA-SIN
29h 40m1 stop
$646Philippine Airlines
Find Deal
Tue, Oct 14 - Sun, Nov 9
STARLUX Airlines Logo
2:00 pm - 4:10 pmSIN-SEA
17h 10m1 stop
STARLUX Airlines Logo
1:15 am - 12:40 pmSEA-SIN
20h 25m1 stop
$698STARLUX Airlines
Find Deal
Tue, Sep 9 - Mon, Sep 15
STARLUX Airlines Logo
2:00 pm - 4:10 pmSIN-SEA
17h 10m1 stop
STARLUX Airlines Logo
1:15 am - 12:40 pmSEA-SIN
20h 25m1 stop
$720STARLUX Airlines
Find Deal
Sun, Sep 28 - Sat, Oct 4
China Airlines Logo
2:00 am - 7:45 pmSIN-SEA
32h 45m1 stop
China Airlines Logo
1:10 am - 12:35 pmSEA-SIN
20h 25m1 stop
$754China Airlines
Find Deal
Mon, Sep 8 - Mon, Sep 15
China Airlines Logo
2:00 am - 7:20 pmSIN-SEA
32h 20m1 stop
China Airlines Logo
12:10 am - 12:40 amSEA-SIN
32h 30m1 stop
$758China Airlines
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Wed, Oct 15 - Mon, Nov 10
Air Canada Logo
9:10 am - 9:21 amSIN-SEA
39h 11m1 stop
Air Canada Logo
10:05 am - 12:55 amSEA-SIN
22h 50m2 stops
$764Air Canada
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Thu, Oct 16 - Tue, Nov 11
Air Canada Logo
8:50 am - 10:06 pmSIN-SEA
28h 16m1 stop
Air Canada Logo
3:40 pm - 11:15 amSEA-SIN
27h 35m2 stops
$792Air Canada
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Fri, Oct 31 - Sat, Nov 8
EVA Air Logo
3:45 pm - 6:10 pmSIN-SEA
18h 25m1 stop
EVA Air Logo
12:10 am - 2:30 pmSEA-SIN
22h 20m1 stop
$824EVA Air
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Fri, Nov 21 - Sun, Nov 30
EVA Air Logo
1:10 pm - 7:30 pmSIN-SEA
21h 20m1 stop
EVA Air Logo
12:10 am - 12:05 pmSEA-SIN
19h 55m1 stop
$835EVA Air
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Fri, Sep 5 - Mon, Nov 24

Philippine Airlines flights from Singapore to State of Washington

Our best Philippine Airlines deals on Singapore to State of Washington flight tickets
Philippine Airlines
Oct 14
SIN8:00 pmSingapore Changi
38h 15m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
Nov 9
SEA9:30 pmSeattle/Tacoma Intl
29h 40m
1 stop
SIN7:10 pmSingapore Changi
$646
Find similar
Philippine Airlines
Sep 27
SIN12:20 amSingapore Changi
33h 55m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
Oct 5
SEA11:35 pmSeattle/Tacoma Intl
32h 45m
1 stop
SIN11:20 pmSingapore Changi
$650
Find similar
Philippine Airlines
Sep 4
SIN12:20 amSingapore Changi
33h 55m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
Sep 12
SEA11:35 pmSeattle/Tacoma Intl
18h 50m
1 stop
SIN9:25 amSingapore Changi
$769
Find similar

United Airlines flights from Singapore to State of Washington

Our best United Airlines deals on Singapore to State of Washington flight tickets
United Airlines
Aug 27
SIN8:45 amSingapore Changi
19h 48m
1 stop
SEA1:33 pmSeattle/Tacoma Intl
Aug 30
SEA5:35 pmSeattle/Tacoma Intl
33h 50m
1 stop
SIN6:25 pmSingapore Changi
$609
Find similar
United Airlines
Aug 19
SIN8:45 amSingapore Changi
19h 48m
1 stop
SEA1:33 pmSeattle/Tacoma Intl
Aug 26
SEA7:34 pmSeattle/Tacoma Intl
31h 51m
1 stop
SIN6:25 pmSingapore Changi
$644
Find similar
United Airlines
Sep 11
SIN8:45 amSingapore Changi
29h 14m
1 stop
SEA10:59 pmSeattle/Tacoma Intl
Sep 23
SEA1:05 pmSeattle/Tacoma Intl
26h 10m
1 stop
SIN6:15 amSingapore Changi
$649
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 August 14, 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

Wed 8/27

8:45 am-1:33 pm

1 stop19h 48m

Seattle/Tacoma Intl

Sat 8/30

5:35 pm-6:25 pm

1 stop33h 50m

$609

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Tue 10/14

8:00 pm-7:15 pm

1 stop38h 15m

Seattle/Tacoma Intl

Sun 11/9

9:30 pm-7:10 pm

1 stop29h 40m

$646

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Tue 9/9

2:00 pm-4:10 pm

1 stop17h 10m

Seattle/Tacoma Intl

Mon 9/15

1:15 am-12:40 pm

1 stop20h 25m

$698

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Sun 9/28

2:00 pm-4:10 pm

1 stop17h 10m

Seattle/Tacoma Intl

Sat 10/4

1:15 am-12:40 pm

1 stop20h 25m

$720

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Mon 9/8

2:00 am-7:45 pm

1 stop32h 45m

Seattle/Tacoma Intl

Mon 9/15

1:10 am-12:35 pm

1 stop20h 25m

$754

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Wed 10/15

2:00 am-7:20 pm

1 stop32h 20m

Seattle/Tacoma Intl

Mon 11/10

12:10 am-12:40 am

1 stop32h 30m

$758

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Thu 10/16

9:10 am-9:21 am

1 stop39h 11m

Seattle/Tacoma Intl

Tue 11/11

10:05 am-12:55 am

2 stops22h 50m

$764

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Fri 10/31

8:50 am-10:06 pm

1 stop28h 16m

Seattle/Tacoma Intl

Sat 11/8

3:40 pm-11:15 am

2 stops27h 35m

$792

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Fri 11/21

3:45 pm-6:10 pm

1 stop18h 25m

Seattle/Tacoma Intl

Sun 11/30

12:10 am-2:30 pm

1 stop22h 20m

$824

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Fri 9/5

1:10 pm-7:30 pm

1 stop21h 20m

Seattle/Tacoma Intl

Mon 11/24

12:10 am-12:05 pm

1 stop19h 55m

$835

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 February is, on average, the cheapest month to fly to State of Washington from Singapore, with most prices found around $855. If you aren’t able to travel to State of Washington during the month of February, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $855.

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 Monday. Travelers who choose to depart for State of Washington on a Monday will often find tickets for as low as $1,040. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Singapore to State of Washington for around $1,655.

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 morning when prices are $1,299 on average. Flights to State of Washington from Singapore in the morning 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 $917 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 $819 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

Best Price Found

$401

Fastest flight time

14h 10m

Direct flights

Mon, Wed, Fri, Sat and Sun

Airports in State of Washington

2 airports
The best one-way flight to State of Washington from Singapore in the past 72 hours is $401. The best round-trip flight deal from Singapore to State of Washington found on momondo in the last 72 hours is $609.
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 2 airports near State of Washington: Portland (PDX), 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 $762Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
Singapore AirlinesPriceFrom $763Free CancellationRating
8.1
1,346 reviews
Search Singapore Airlines flights
EVA AirPriceFrom $779Free CancellationRating
8.4
1,233 reviews
Search EVA Air flights
STARLUX AirlinesPriceFrom $785Free CancellationRating
9.0
204 reviews
Search STARLUX 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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