What is the cheapest airline that flies from Singapore Changi to Washington?

United Airlines and Qatar Airways are the most popular carriers operating from Singapore Changi to Washington

What airlines fly to State of Washington?

STARLUX Airlines, Singapore Airlines and EVA Air are the top three most popular airlines that fly to State of Washington from Singapore according to our data. STARLUX Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 4 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

How many flights depart from Singapore to State of Washington on average per week?

1 flights are operational weekly from Singapore to State of Washington as of March 2026. The most popular departure day for this route is Sat, with 100% of flights per week taking off on this day.

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?

As of March 2026, there are 4 operators available to choose from 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.

$464 Cheap Flights from Singapore to Washington in 2026

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Find the cheapest flights from Singapore to Washington

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:35 pm - 1:12 am

SIN

SEA

19h 37m

1 stop

7:08 am - 6:35 pm

SEA

SIN

20h 27m

1 stop

$637United Airlines

Sun, May 3 - Mon, May 11

8:35 pm - 1:12 am

SIN

SEA

19h 37m

1 stop

7:08 am - 6:35 pm

SEA

SIN

20h 27m

1 stop

$737United Airlines

Thu, May 7 - Thu, May 14

8:35 pm - 11:24 pm

SIN

SEA

41h 49m

1 stop

8:38 am - 6:35 pm

SEA

SIN

42h 57m

1 stop

$743United Airlines

Thu, Sep 3 - Wed, Sep 9

8:35 pm - 11:24 pm

SIN

SEA

41h 49m

1 stop

10:54 am - 6:15 am

SEA

SIN

28h 21m

1 stop

$745United Airlines

Thu, Sep 3 - Wed, Sep 9

2:00 pm - 4:10 pm

SIN

SEA

17h 10m

1 stop

1:15 am - 12:40 pm

SEA

SIN

20h 25m

1 stop

$749STARLUX Airlines

Fri, May 29 - Mon, Jul 6

11:05 am - 2:25 pm

SIN

SEA

18h 20m

1 stop

10:15 am - 5:35 pm

SEA

SIN

16h 20mnonstop

$762Multiple Airlines

Thu, Sep 3 - Tue, Sep 8

2:00 pm - 4:10 pm

SIN

SEA

17h 10m

1 stop

1:15 am - 12:40 pm

SEA

SIN

20h 25m

1 stop

$809STARLUX Airlines

Wed, Sep 9 - Tue, Sep 15

1:45 pm - 9:25 am

SIN

PDX

34h 40m

2 stops

5:40 pm - 12:35 pm

PDX

SIN

27h 55m

2 stops

$897Multiple Airlines

Fri, Sep 11 - Sat, Sep 26

3:20 pm - 7:37 am

SIN

PDX

31h 17m

2 stops

8:59 pm - 11:55 am

PDX

SIN

23h 56m

2 stops

$1,007EVA Air

Fri, Aug 7 - Sat, Aug 22

3:20 pm - 4:50 pm

SIN

PDX

40h 30m

2 stops

9:59 pm - 11:55 am

PDX

SIN

22h 56m

2 stops

$1,040EVA Air

Fri, Aug 7 - Sat, Aug 22

United Airlines flights from Singapore to State of Washington

Our best United Airlines deals on Singapore to State of Washington flight tickets

United Airlines

May 3

SIN8:35 pmSingapore Changi

19h 37m

1 stop

SEA1:12 amSeattle/Tacoma Intl

May 11

SEA7:08 amSeattle/Tacoma Intl

20h 27m

1 stop

SIN6:35 pmSingapore Changi

$637

United Airlines

May 7

SIN8:35 pmSingapore Changi

19h 37m

1 stop

SEA1:12 amSeattle/Tacoma Intl

May 14

SEA7:08 amSeattle/Tacoma Intl

20h 27m

1 stop

SIN6:35 pmSingapore Changi

$737

United Airlines

Sep 3

SIN8:35 pmSingapore Changi

41h 49m

1 stop

SEA11:24 pmSeattle/Tacoma Intl

Sep 9

SEA8:38 amSeattle/Tacoma Intl

42h 57m

1 stop

SIN6:35 pmSingapore Changi

$743

Asiana Airlines flights from Singapore to State of Washington

Our best Asiana Airlines deals on Singapore to State of Washington flight tickets

Asiana Airlines

Sep 3

SIN10:50 pmSingapore Changi

31h 05m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

Sep 17

SEA12:55 amSeattle/Tacoma Intl

29h 35m

1 stop

SIN9:30 pmSingapore Changi

$821

Asiana Airlines

Sep 2

SIN10:50 pmSingapore Changi

31h 05m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

Sep 17

SEA12:55 amSeattle/Tacoma Intl

29h 35m

1 stop

SIN9:30 pmSingapore Changi

$849

Asiana Airlines

Apr 1

SIN10:50 pmSingapore Changi

31h 05m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

Apr 7

SEA12:55 amSeattle/Tacoma Intl

29h 35m

1 stop

SIN9:30 pmSingapore Changi

$1,610

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Sun 5/3

8:35 pm-1:12 am

1 stop19h 37m

Seattle/Tacoma Intl

Mon 5/11

7:08 am-6:35 pm

1 stop20h 27m

$637

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Thu 5/7

8:35 pm-1:12 am

1 stop19h 37m

Seattle/Tacoma Intl

Thu 5/14

7:08 am-6:35 pm

1 stop20h 27m

$737

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Thu 9/3

8:35 pm-11:24 pm

1 stop41h 49m

Seattle/Tacoma Intl

Wed 9/9

8:38 am-6:35 pm

1 stop42h 57m

$743

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Thu 9/3

8:35 pm-11:24 pm

1 stop41h 49m

Seattle/Tacoma Intl

Wed 9/9

10:54 am-6:15 am

1 stop28h 21m

$745

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Fri 5/29

2:00 pm-4:10 pm

1 stop17h 10m

Seattle/Tacoma Intl

Mon 7/6

1:15 am-12:40 pm

1 stop20h 25m

$749

Quickest round-trip

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Thu 9/3

11:05 am-2:25 pm

1 stop18h 20m

Seattle/Tacoma Intl

Tue 9/8

10:15 am-5:35 pm

Nonstop16h 20m

$762

SingaporeSeattle

SIN - SEA

SINSEA

Singapore Changi

Wed 9/9

2:00 pm-4:10 pm

1 stop17h 10m

Seattle/Tacoma Intl

Tue 9/15

1:15 am-12:40 pm

1 stop20h 25m

$809

SingaporePortland

SIN - PDX

SINPDX

Singapore Changi

Fri 9/11

1:45 pm-9:25 am

2 stops34h 40m

Portland

Sat 9/26

5:40 pm-12:35 pm

2 stops27h 55m

$897

SingaporePortland

SIN - PDX

SINPDX

Singapore Changi

Fri 8/7

3:20 pm-7:37 am

2 stops31h 17m

Portland

Sat 8/22

8:59 pm-11:55 am

2 stops23h 56m

$1,007

SingaporePortland

SIN - PDX

SINPDX

Singapore Changi

Fri 8/7

3:20 pm-4:50 pm

2 stops40h 30m

Portland

Sat 8/22

9:59 pm-11:55 am

2 stops22h 56m

$1,040

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 $731. If you aren’t able to travel to State of Washington during the month of October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $826.

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 $946. 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 $1,995.

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 $856 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 $812 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 15m
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 15m

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?
As of March 2026, there are 4 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Singapore to State of Washington is Airbus A350-900 (80.00% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (13.33%) and Boeing 777-300ER (6.67%).

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 Airlines	PriceFrom $761	Free Cancellation	Rating 7.4 9,503 reviews	Search United Airlines flights
EVA Air	PriceFrom $776	Free Cancellation	Rating 8.5 1,389 reviews	Search EVA Air flights
Singapore Airlines	PriceFrom $778	Free Cancellation	Rating 8.2 1,484 reviews	Search Singapore Airlines flights
STARLUX Airlines	PriceFrom $785	Free Cancellation	Rating 9.0 293 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.