$266 Find Cheap Flights from Seattle to Singapore

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Singapore departing on 3/22. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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1 adult, Economy

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Cheap Flights from Seattle to Singapore

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Singapore
Singapore1 stop$631
Singapore
Singapore1 stop$631

Book Cheap Seattle to Singapore Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Singapore that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Singapore

Sun, Nov 16 - Tue, Nov 25
Philippine Airlines Logo
9:30 pm - 1:00 pmSEA-SIN
23h 30m1 stop
Philippine Airlines Logo
10:35 am - 6:40 pmSIN-SEA
24h 05m1 stop
$631Philippine Airlines
Find Deal
Sun, Nov 16 - Mon, Nov 24
Philippine Airlines Logo
9:30 pm - 9:35 amSEA-SIN
20h 05m1 stop
Philippine Airlines Logo
8:10 pm - 6:40 pmSIN-SEA
38h 30m1 stop
$647Philippine Airlines
Find Deal
Sun, Nov 2 - Fri, Nov 7
Singapore Airlines Logo
8:45 am - 5:45 pmSEA-SIN
17h 00mnonstop
Singapore Airlines Logo
9:00 am - 7:10 amSIN-SEA
14h 10mnonstop
$691Singapore Airlines
Find Deal
Thu, Oct 23 - Sat, Nov 1
Singapore Airlines Logo
10:15 am - 5:35 pmSEA-SIN
16h 20mnonstop
Singapore Airlines Logo
9:00 am - 8:10 amSIN-SEA
14h 10mnonstop
$711Singapore Airlines
Find Deal
Tue, Nov 4 - Tue, Nov 18
Air Canada Logo
3:40 pm - 7:00 amSEA-SIN
23h 20m1 stop
Air Canada Logo
8:50 am - 9:31 amSIN-SEA
16h 41m1 stop
$735Air Canada
Find Deal
Tue, Nov 18 - Wed, Nov 26
Korean Air Logo
11:00 am - 12:10 amSEA-SIN
21h 10m1 stop
Korean Air Logo
10:40 am - 9:00 amSIN-SEA
38h 20m1 stop
$736Korean Air
Find Deal
Tue, Nov 4 - Tue, Nov 18
Air Canada Logo
3:40 pm - 7:00 amSEA-SIN
23h 20m1 stop
Air Canada Logo
9:00 pm - 9:31 amSIN-SEA
28h 31m2 stops
$737Air Canada
Find Deal
Tue, Nov 18 - Wed, Nov 26
Korean Air Logo
11:00 am - 5:00 amSEA-SIN
26h 00m1 stop
Korean Air Logo
10:40 am - 9:00 amSIN-SEA
38h 20m1 stop
$739Korean Air
Find Deal
Wed, Dec 3 - Tue, Dec 23
United Airlines Logo
7:00 am - 8:15 pmSEA-SIN
21h 15m1 stop
United Airlines Logo
10:10 am - 9:07 pmSIN-SEA
26h 57m1 stop
$745United Airlines
Find Deal
Thu, Nov 13 - Wed, Nov 26
United Airlines Logo
5:30 am - 8:15 pmSEA-SIN
22h 45m1 stop
United Airlines Logo
10:10 am - 1:38 pmSIN-SEA
19h 28m1 stop
$747United Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Seattle to Singapore flights

Get data-powered insights and trends into flights from Seattle to Singapore to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Seattle to Singapore flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Singapore from Seattle found in the last 72 hours was to Singapore, at $583 round-trip. The most popular route is from Seattle (SEA) to Singapore (SIN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $583.

Can I save money by flying with a layover from Seattle to Singapore?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $693, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Seattle to Singapore?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Singapore, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Singapore is February, when tickets cost $744 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,547 and $1,134 respectively.

What’s the cheapest day of the week to fly from Seattle to Singapore?

The average price of all round-trip flights from Seattle to Singapore clicked on KAYAK for each day over the last 12 months.

For Seattle to Singapore, Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Singapore back to Seattle, the best deals are generally found on Monday, with Sunday being the most expensive.

How far in advance should I book a flight from Seattle to Singapore?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Singapore, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Singapore, you should book around 3 weeks before departure, which saves you about 32% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$266
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 66% increase in price.
Flight from Seattle to Singapore

FAQs - booking Singapore flights

  • How does KAYAK find such low prices on flights from Seattle to Singapore?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Singapore.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Singapore?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Singapore is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Singapore?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Seattle to Singapore with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Singapore?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Seattle to Singapore up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Singapore?

    The cheapest time of day to fly to Singapore is generally in the afternoon, when round-trip flights cost $1,089 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to Singapore is generally at night, which is peak travel time and where the average cost of a ticket is $1,226.

Top tips for finding cheap flights to Singapore

  • Looking for a cheap flight? 25% of our users found tickets from Seattle to the following destinations at these prices or less: Singapore $339 one-way - $688 round-trip

Reviews of the top 5 airlines serving from Seattle to Singapore

 
Need help choosing which airline to fly with from Seattle to Singapore? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1143 reviews
8.2Entertainment
8.5Boarding
8.1Food
8.3Comfort
8.7Crew
Airline reviews

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

10.0 ExcellentAnonymous, Aug 2025ICN - ATL
Read more Korean Air reviews

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

They were trying to get people to check luggage because the over head compartments were full but when we boarded there were lots of empty places that people could have put the luggage.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

This was an amazing flight. The crew was great. The service was great. The food provided was great.

I was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Not many people, so you can lay down on two seats

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

Better screens, it would have been nice to have more comfortable seats.

It was great, but my bag was not loaded onto the connecting flight. I'm currently getting it resolved. If this isn't a problem, everything else was excellent.

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

The plane hasnt left im stuck in seatle still my flight has been grounded for almost 5 hours

My luggage didn’t arrive with my flight. Flight was delayed by nearly 2 hours while we sat on the plane and I almost missed my connecting flight and subsequently missed the last train from the airport so it took me another 2 hours to get to my destination after arriving, Crew skipped me several times when offering beverages, and I couldn’t get their attention at times because they wouldn’t even make eye contact with me. They didn’t give me a form for disembarking so I had to go to the back of the line after waiting an eternity for immigration. Paid for on flight wi- fi that didn’t work for most of the flight.

Love flying Asiana. Been using it for over a decade now.

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

Staff always with a smile and very helpful with my mom who has mobility issues.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

Airline should consider adding a small meal at the last leg of the flight, right now there is 7 hours of no meal break.

Lounge a access was excellent as was the attentiveness and service from the crew as always. The food and drink supplied were of good quality. The entertainment system had a good selection and I liked the mapping system supplied. However the screen wild have been bigger and the operation a little smoother to navigate. The seats were barely comfortable, but adequate.

Crew and service excellent. 2 hour delay for takeoff. SQ app showed flight on time.

Headwind delayed our flight which wasn’t the airlines fault

The food wasn’t good at all. I skipped meals .

We were not given option for meals since they ran out of the other option but good thing the remaining options tasted great.

Both the staff at check-in counter and on board were pleasant and helpful. My chicken and mashed potato was good, sauce was tasty, but the zucchini, carrot n other accompanying vegetables were over-cooked a little. (I understand the meal has to be prepared earlier). Yet I would fly on Singapore Airlines again and recommend it to family and friends.

Horrendous. We upgraded and they took the money but cancelled one of our tickets. The recline action didn’t work on the seats for the flight from Singapore to London, pre booked meals but they seemed to have disappeared as well.. Phone customer service was horrendous. Took 5 phone calls and no fix. Craig at the airport was the only one who seemed to be able to get the ticket back.

The seat in economy class and legroom in Singapore airline are narrower than Korean airlines! I don’t have that comforting feeling flying with Singapore air as in the past!

Loved the airline with the exception of their carry on limitations. They enforce a strict 7 kilo limit for carry on baggage which is ridiculous. We traveled from SFO to SIN with carry on with no difficulty yet when we checked in Delhi they forced us to check the carry on bags. The weight of our carry on bags were 11 and 12 kilos and while they exceeded the limitations set by Singapore Airlines they were well under weight limitations set by may other carriers. Interestingly my wife and I were each allowed two 22 KG bags to check in addition to the 7 kg carry on for a total weight of 102 KG's. Our total weight with the one bag we planned to check and our two carry ons was 46 kgs.

It would have been better if the crew has supported my husband's reasons for needing to keep the space clear around his feet, rather than insisting that he put his knapsack in that space.

See previous note about the passenger in Denver who threw my husband's bag out of the overhead bin in order to maker room for his own. And the flight attendant back up the new passenger.

My husband and I had boarded the flight from Denver to Chicago, and one of the last passengers to get on the plane opened the overhead bin above my husband's seat and threw his bag out of the bin to make space for his own. He said, "Mine is bigger!" The flight attendant supported the new passenger. They didn't care that my husband has two artificial knees and must have the foot room in front of his seat to be able to fit his legs in -- and to be able to stand, much less walk, at the end of the flight. I have never seen this happen before, and it was a disaster.

Subject: Formal Complaint: Discriminatory and Unprofessional Conduct – Request for Immediate Action & Compensation Dear [Airline Customer Relations Team], I am writing to file a formal complaint regarding my recent travel experience with [Airline], which was by far the worst I have ever encountered. What occurred was not only unprofessional, but in several instances discriminatory, unsafe, and unacceptable. On the first leg of my trip, I arrived only four minutes past check-in. Instead of making any attempt to resolve the matter, your representative flatly denied me boarding and made me wait while she attended to passengers who arrived after me. By the time a manager intervened, it was too late to board, costing me time, money, and unnecessary frustration. The second leg of my trip (Chicago–San Francisco) raised even more serious concerns. From the outset, it was apparent that the staff—particularly two attendants—prioritized Caucasian passengers while dismissing African American and minority passengers. • When a Caucasian passenger in the exit row refused to comply with federal safety requirements, I, as a first responder, immediately offered to switch seats and assume the responsibility. My offer was blatantly ignored, and instead, a Caucasian passenger seated further up was chosen. This was discriminatory and deeply insulting, especially as I was actively de-escalating the situation that could have delayed the flight further. • During a lengthy tarmac delay of over 90 minutes, passengers were given conflicting and unreasonable instructions that created unnecessary distress and tension. • Throughout the flight, a visibly intoxicated passenger directly in front of me was disruptive, rude to others, failed to comply with seatbelt and electronic device rules, and yet faced no enforcement from the crew. In stark contrast, I was singled out for repeated compliance checks even though I was following every rule. This unequal treatment was so obvious that multiple passengers around me spoke up in my defense. This pattern of behavior demonstrated a clear lack of professionalism, disregard for passenger safety, and discriminatory treatment. I expect far better from an airline of your stature. As a paying customer subjected to this unacceptable treatment, I am formally requesting: 1. A full investigation into the conduct of the staff on both flights. 2. A written apology acknowledging the discriminatory and unprofessional behavior I endured. 3. Appropriate compensation for the distress, inconvenience, and mishandling of my travel. If this matter is not addressed promptly and thoroughly, I will have no choice but to escalate my complaint further, including filing with the U.S. Department of Transportation and sharing my experience through other channels. I trust [Airline] will take this complaint seriously and provide a timely resolution.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

Check in was quick and easy during early hours. Flight was on time, and customer services was a plus.

Terrible. They wouldn't allow me on my flight on the 14th..

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Didn’t realize I purchased a basic fare with no carry ons allowed. Not very well communicated. Also had seats switched without knowledge and had to pay for different ones.

We loved our Air Canada experience and will definitely fly them again. It just so happened than in the first leg of our trip their entertainment system was not working, and neither was their oven so cold meal & snacks only.

For the price, it was a really good experience. There was no entertainment on board, so I couldn't really rate this, and I didn't order a meal. I appreciated that there was a free glass of wine.

Short flight. Everything was fine except the flight was delayed twice for a total of an hour.

My flight from New York to Canada and Canada to Brisbane was canceled, so I had to take united airlines instead flight from New York to Dubai then layover in Dubai 8 hours then from Dubai to Brisbane it was extremely difficult for me , it was a nightmare flying with Canadian airlines unfortunately.

I found the boarding easy and my seat was very comfortable as I had a lot of leg room. I am not too happy that I no longer have lounge access even though I used to get it with my TD credit card.

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

Real smooth and easy, Real good leg room in coach!

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Re luggage I carried a backpack only. I did not check any bags in. However there were other passengers with carry on luggage going in the plane. My question is why are others allowed to have a carry on luggage inside the plane? Shouldn’t they have dropped it off at the gate? I’m asking because I could have brought the same thing instead of a backpack only. Please clarify for future reference. Thank you.

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