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

Air Canada, Singapore Airlines, and Korean Air are the most popular carriers operating from Singapore Changi to Washington

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

5 flights are operational weekly from Singapore to State of Washington as of August 2026. The most popular departure day for this route is Tue, with 20% 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 August 2026, there are 2 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.

$494 Cheap Flights from Singapore to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Singapore to Washington

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 10:05 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

18h 05m1 stop Vancouver Intl

7:15 pm - 5:15 amSEA Seattle/Tacoma Intl-SIN Singapore Changi

19h 00m1 stop Vancouver Intl

$742Air Canada

Sat, Sep 12 - Fri, Sep 18

7:00 am - 10:47 pmSIN Singapore Changi-SEA Seattle/Tacoma Intl

30h 47m1 stop Vancouver Intl

7:15 pm - 5:15 amSEA Seattle/Tacoma Intl-SIN Singapore Changi

19h 00m1 stop Vancouver Intl

$744Air Canada

Sat, Sep 12 - Fri, Sep 18

7:00 am - 6:32 pmSIN Singapore Changi-SEA Seattle/Tacoma Intl

26h 32m1 stop Vancouver Intl

10:30 am - 5:15 amSEA Seattle/Tacoma Intl-SIN Singapore Changi

27h 45m1 stop Vancouver Intl

$748Air Canada

Sun, Sep 27 - Thu, Oct 1

7:00 am - 10:42 pmSIN Singapore Changi-SEA Seattle/Tacoma Intl

30h 42m1 stop Vancouver Intl

3:15 pm - 2:50 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

32h 35m2 stops Vancouver Intl Bangkok Suvarnabhumi

$751Air Canada

Thu, Oct 15 - Mon, Oct 26

2:45 pm - 3:05 pmSIN Singapore Changi-SEA Seattle/Tacoma Intl

16h 20m1 stop Taipei City Taiwan Taoyuan Intl

11:45 pm - 1:25 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

21h 40m1 stop Taipei City Taiwan Taoyuan Intl

$848STARLUX Airlines

Sat, Dec 26 - Sat, Jan 9

2:45 pm - 3:05 pmSIN Singapore Changi-SEA Seattle/Tacoma Intl

16h 20m1 stop Taipei City Taiwan Taoyuan Intl

11:45 pm - 1:25 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

21h 40m1 stop Taipei City Taiwan Taoyuan Intl

$849STARLUX Airlines

Sat, Dec 26 - Sat, Jan 9

2:45 pm - 3:05 pmSIN Singapore Changi-SEA Seattle/Tacoma Intl

16h 20m1 stop Taipei City Taiwan Taoyuan Intl

11:45 pm - 1:25 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

21h 40m1 stop Taipei City Taiwan Taoyuan Intl

$850STARLUX Airlines

Sat, Dec 26 - Sat, Jan 9

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

9:45 am - 5:45 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

17h 00mnonstop

$907Singapore Airlines

Fri, Oct 16 - Tue, Oct 27

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

10:15 am - 5:35 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

16h 20mnonstop

$907Singapore Airlines

Tue, Oct 13 - Thu, Oct 22

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

9:45 am - 5:45 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

17h 00mnonstop

$945Singapore Airlines

Sat, Oct 10 - Sun, Oct 25

Cheap last minute flights

Enter your travel dates to find the best prices.

1:55 am - 11:59 pmSIN Singapore Changi-PDX Portland

37h 04m2 stops Tokyo Haneda Los Angeles

6:35 am - 6:10 amPDX Portland-SIN Singapore Changi

32h 35m2 stops Los Angeles Tokyo Haneda

$1,116Japan Airlines

Thu, Aug 13 - Tue, Sep 8

8:05 am - 4:36 pmSIN Singapore Changi-PDX Portland

23h 31m2 stops Tokyo Narita San Diego

6:35 am - 6:10 amPDX Portland-SIN Singapore Changi

32h 35m2 stops Los Angeles Tokyo Haneda

$1,141Japan Airlines

Fri, Aug 14 - Tue, Sep 8

1:55 am - 11:59 pmSIN Singapore Changi-PDX Portland

37h 04m2 stops Tokyo Haneda Los Angeles

6:35 am - 6:10 amPDX Portland-SIN Singapore Changi

32h 35m2 stops Los Angeles Tokyo Haneda

$1,151Japan Airlines

Thu, Aug 13 - Tue, Sep 8

8:10 am - 2:51 pmSIN Singapore Changi-PDX Portland

21h 41m2 stops Incheon Intl Vancouver Intl

7:45 pm - 5:15 amPDX Portland-SIN Singapore Changi

18h 30m1 stop Vancouver Intl

$1,289Multiple Airlines

Fri, Aug 14 - Tue, Sep 8

8:45 am - 8:59 pmSIN Singapore Changi-PDX Portland

27h 14m1 stop San Francisco

6:57 pm - 6:15 amPDX Portland-SIN Singapore Changi

20h 18m1 stop San Francisco

$1,535United Airlines

Fri, Aug 14 - Tue, Sep 8

8:45 am - 9:05 pmSIN Singapore Changi-PDX Portland

27h 20m2 stops San Francisco Denver Intl

7:00 am - 6:35 pmPDX Portland-SIN Singapore Changi

20h 35m1 stop San Francisco

$1,540United Airlines

Fri, Aug 14 - Tue, Sep 8

8:35 pm - 10:11 amSIN Singapore Changi-PDX Portland

28h 36m1 stop San Francisco

1:03 pm - 6:15 amPDX Portland-SIN Singapore Changi

26h 12m1 stop San Francisco

$1,609United Airlines

Fri, Aug 14 - Tue, Sep 8

8:45 am - 10:45 pmSIN Singapore Changi-PDX Portland

29h 00m1 stop San Francisco

5:30 am - 6:35 pmPDX Portland-SIN Singapore Changi

22h 05m1 stop San Francisco

$1,610United Airlines

Fri, Aug 14 - Tue, Sep 8

8:45 am - 10:45 pmSIN Singapore Changi-PDX Portland

29h 00m1 stop San Francisco

9:00 am - 11:20 pmPDX Portland-SIN Singapore Changi

23h 20m2 stops San Francisco Tokyo Narita

$1,731United Airlines

Fri, Aug 14 - Tue, Sep 8

6:15 am - 6:19 pmSIN Singapore Changi-PDX Portland

27h 04m3 stops Tokyo Narita Denver Intl San Francisco

9:00 am - 12:45 amPDX Portland-SIN Singapore Changi

24h 45m2 stops San Francisco Tokyo Narita

$2,187United Airlines

Fri, Aug 14 - Tue, Sep 8

Cheap direct flights

Enter your travel dates to find the best prices.

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

9:45 am - 5:45 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

17h 00mnonstop

$907Singapore Airlines

Fri, Oct 16 - Tue, Oct 27

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

10:15 am - 5:35 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

16h 20mnonstop

$907Singapore Airlines

Tue, Oct 13 - Thu, Oct 22

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

9:45 am - 5:45 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

17h 00mnonstop

$945Singapore Airlines

Sat, Oct 10 - Sun, Oct 25

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

10:15 am - 5:35 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

16h 20mnonstop

$946Singapore Airlines

Thu, Oct 8 - Fri, Oct 23

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

10:15 am - 5:35 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

16h 20mnonstop

$949Singapore Airlines

Fri, Oct 9 - Sat, Oct 24

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

10:15 am - 5:35 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

16h 20mnonstop

$958Singapore Airlines

Sun, Sep 27 - Sat, Oct 10

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

9:45 am - 5:45 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

17h 00mnonstop

$981Singapore Airlines

Thu, Oct 15 - Sun, Oct 25

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

10:15 am - 5:35 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

16h 20mnonstop

$1,003Singapore Airlines

Thu, Sep 24 - Fri, Sep 25

9:00 am - 8:45 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 45mnonstop

10:15 am - 5:35 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

16h 20mnonstop

$1,010Singapore Airlines

Fri, Sep 25 - Sun, Oct 11

9:00 am - 7:10 amSIN Singapore Changi-SEA Seattle/Tacoma Intl

14h 10mnonstop

8:45 am - 5:45 pmSEA Seattle/Tacoma Intl-SIN Singapore Changi

17h 00mnonstop

$1,012Singapore Airlines

Sat, Dec 19 - Wed, Dec 30

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Korean Air flights from Singapore to State of Washington

Our best Korean Air deals on Singapore to State of Washington flight tickets

Korean Air

Sep 8

SIN10:00 pmSingapore Changi

27h 40m

1 stop

SEA10:40 amSeattle/Tacoma Intl

Sep 10

SEA12:50 pmSeattle/Tacoma Intl

39h 25m

1 stop

SIN7:15 pmSingapore Changi

$775

Korean Air

Oct 14

SIN1:25 amSingapore Changi

24h 15m

1 stop

SEA10:40 amSeattle/Tacoma Intl

Oct 26

SEA12:00 pmSeattle/Tacoma Intl

26h 00m

1 stop

SIN5:00 amSingapore Changi

$799

Korean Air

Nov 9

SIN10:40 amSingapore Changi

38h 20m

1 stop

SEA9:00 amSeattle/Tacoma Intl

Nov 13

SEA11:00 amSeattle/Tacoma Intl

26h 00m

1 stop

SIN5:00 amSingapore Changi

$833

Air Canada flights from Singapore to State of Washington

Our best Air Canada deals on Singapore to State of Washington flight tickets

Air Canada

Sep 12

SIN7:00 amSingapore Changi

18h 05m

1 stop

SEA10:05 amSeattle/Tacoma Intl

Sep 18

SEA7:15 pmSeattle/Tacoma Intl

19h 00m

1 stop

SIN5:15 amSingapore Changi

$742

Air Canada

Sep 12

SIN7:00 amSingapore Changi

30h 47m

1 stop

SEA10:47 pmSeattle/Tacoma Intl

Sep 18

SEA7:15 pmSeattle/Tacoma Intl

19h 00m

1 stop

SIN5:15 amSingapore Changi

$744

Air Canada

Sep 27

SIN7:00 amSingapore Changi

26h 32m

1 stop

SEA6:32 pmSeattle/Tacoma Intl

Oct 1

SEA10:30 amSeattle/Tacoma Intl

27h 45m

1 stop

SIN5:15 amSingapore Changi

$748

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Sat 9/12

7:00 am-10:05 am

1 stop18h 05m

Seattle/Tacoma Intl

Fri 9/18

7:15 pm-5:15 am

1 stop19h 00m

$742

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Sat 9/12

7:00 am-10:47 pm

1 stop30h 47m

Seattle/Tacoma Intl

Fri 9/18

7:15 pm-5:15 am

1 stop19h 00m

$744

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Sun 9/27

7:00 am-6:32 pm

1 stop26h 32m

Seattle/Tacoma Intl

Thu 10/1

10:30 am-5:15 am

1 stop27h 45m

$748

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Thu 10/15

7:00 am-10:42 pm

1 stop30h 42m

Seattle/Tacoma Intl

Mon 10/26

3:15 pm-2:50 pm

2 stops32h 35m

$751

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Sat 12/26

2:45 pm-3:05 pm

1 stop16h 20m

Seattle/Tacoma Intl

Sat 1/9

11:45 pm-1:25 pm

1 stop21h 40m

$848

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Sat 12/26

2:45 pm-3:05 pm

1 stop16h 20m

Seattle/Tacoma Intl

Sat 1/9

11:45 pm-1:25 pm

1 stop21h 40m

$849

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Sat 12/26

2:45 pm-3:05 pm

1 stop16h 20m

Seattle/Tacoma Intl

Sat 1/9

11:45 pm-1:25 pm

1 stop21h 40m

$850

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Fri 10/16

9:00 am-8:45 am

Nonstop14h 45m

Seattle/Tacoma Intl

Tue 10/27

9:45 am-5:45 pm

Nonstop17h 00m

$907

Quickest round-trip

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Tue 10/13

9:00 am-8:45 am

Nonstop14h 45m

Seattle/Tacoma Intl

Thu 10/22

10:15 am-5:35 pm

Nonstop16h 20m

$907

SingaporeSeattle

SIN Singapore Changi - SEA Seattle/Tacoma Intl

SINSEA

Singapore Changi

Sat 10/10

9:00 am-8:45 am

Nonstop14h 45m

Seattle/Tacoma Intl

Sun 10/25

9:45 am-5:45 pm

Nonstop17h 00m

$945

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 November is, on average, the cheapest month to fly to State of Washington from Singapore, with most prices found around $787. If you aren’t able to travel to State of Washington during the month of November, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $835.

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 from Singapore to Washington?

You are more likely to see cheaper flights to State of Washington from Singapore when booking week ahead of your departure date. In general, you can expect to find flights to State of Washington for around $913 when searching week 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 $680 on momondo.

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

There are 3 cabin classes available to choose from on Singapore to State of 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?

You could potentially save up to 2% on your flight if you consider stops on a Singapore to State of Washington flight.

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	$497
Fastest flight time	14h 10m
Direct flights	Mon, Wed, Thu, Fri, Sat and Sun
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from Singapore in the past 72 hours is $497. The best round-trip flight deal from Singapore to State of Washington found on momondo in the last 72 hours is $2,938.

The fastest flight from Singapore to State of Washington takes 14h 10m

Direct flights go from Singapore to State of Washington on Monday, Wednesday, Thursday, 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

Frequently asked questions about flying from Singapore to Washington

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 August 2026, there are 2 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 (85.71% of total bookings). The next most popular plane model is Boeing 787-9 Dreamliner (14.29%).

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
Singapore Airlines	PriceFrom $778	Free Cancellation	Rating 8.2 1,584 reviews		Search Singapore Airlines flights
STARLUX Airlines	PriceFrom $798	Free Cancellation	Rating 8.8 367 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.