S$ 481 Find Cheap Flights from San Francisco to Southeast Asia – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Southeast Asia departing on 8-8. 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, 0 bags

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Cheap Flights from San Francisco to Southeast Asia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from San Francisco to Southeast Asia 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 return flight deals from San Francisco to Southeast Asia

Sun, 16 Aug - Mon, 24 Aug
United Airlines Logo
22:50 - 06:15
SFO
-
SIN
16h 25mdirect
United Airlines Logo
20:35 - 21:20
SIN
-
SFO
15h 45mdirect
S$ 900United Airlines
Mon, 3 Aug - Wed, 19 Aug
United Airlines Logo
22:50 - 06:15
SFO
-
SIN
16h 25mdirect
United Airlines Logo
20:35 - 21:20
SIN
-
SFO
15h 45mdirect
S$ 901United Airlines
Sun, 2 Aug - Sun, 16 Aug
United Airlines Logo
22:50 - 06:15
SFO
-
SIN
16h 25mdirect
United Airlines Logo
20:35 - 21:20
SIN
-
SFO
15h 45mdirect
S$ 904United Airlines
Thu, 8 Oct - Mon, 12 Oct
Singapore Airlines Logo
11:45 - 19:10
SFO
-
SIN
16h 25mdirect
Singapore Airlines Logo
09:05 - 09:50
SIN
-
SFO
15h 45mdirect
S$ 908Singapore Airlines
Sun, 6 Sep - Mon, 14 Sep
United Airlines Logo
01:10 - 06:40
SFO
-
SIN
38h 30m
1 stop
United Airlines Logo
20:35 - 21:05
SIN
-
SFO
15h 30mdirect
S$ 912United Airlines
Wed, 25 Nov - Tue, 12 Jan
United Airlines Logo
10:40 - 20:15
SFO
-
SIN
17h 35mdirect
United Airlines Logo
10:45 - 15:20
SIN
-
SFO
20h 35m
1 stop
S$ 913United Airlines
Thu, 6 Aug - Thu, 13 Aug
Delta Logo
13:10 - 21:50
SFO
-
KUL
41h 40m
1 stop
Delta Logo
23:20 - 16:56
KUL
-
SFO
32h 36m
2 stops
S$ 1,450Delta
Fri, 30 Oct - Tue, 24 Nov
Delta Logo
07:05 - 22:25
SFO
-
KUL
48h 20m
2 stops
Delta Logo
23:55 - 17:49
KUL
-
SFO
33h 54m
2 stops
S$ 1,455Delta
Fri, 31 Jul - Mon, 17 Aug
Korean Air Logo
13:10 - 21:50
SFO
-
KUL
41h 40m
1 stop
Korean Air Logo
23:20 - 11:00
KUL
-
SFO
26h 40m
1 stop
S$ 1,459Korean Air
Mon, 3 Aug - Sat, 15 Aug
Korean Air Logo
13:10 - 21:50
SFO
-
KUL
41h 40m
1 stop
Korean Air Logo
23:20 - 08:21
KUL
-
SFO
48h 01m
2 stops
S$ 1,464Korean Air
Booking Insights

KAYAK's insights & trends for San Francisco to Southeast Asia flights

Get data-powered insights and trends into flights from San Francisco to Southeast Asia to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest San Francisco to Southeast Asia flight route?

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

The cheapest ticket to Southeast Asia from San Francisco found in the last 5 days was to Singapore, at S$ 921 return. The most popular route is from San Francisco (SFO) to Singapore (SIN), and the cheapest return airline ticket found on this route in the last 5 days was S$ 921.

What is the cheapest time of day to fly to Southeast Asia?

The average price for all round-trip flights from San Francisco to Southeast Asia depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Southeast Asia is generally in the morning, when retur flights cost S$ 1,196 on average. The most expensive time of day to fly to Southeast Asia is generally at night, which is peak travel time and where the average cost of a ticket is S$ 1,746.

Can I save money by flying with a stopover from San Francisco to Southeast Asia?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of S$ 797, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from San Francisco to Southeast Asia?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Southeast Asia, 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 San Francisco to Southeast Asia is August, when tickets cost S$ 1,031 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of return tickets is S$ 1,807 and S$ 1,742 respectively.

What’s the cheapest day of the week to fly from San Francisco to Southeast Asia?

The average price of all round-trip flights from San Francisco to Southeast Asia clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from San Francisco to Southeast Asia, look for departures on Mondays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Southeast Asia, Wednesday is the cheapest day to fly and Sunday is the most expensive.

How far in advance should I book a flight from San Francisco to Southeast Asia?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Southeast Asia, 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 a flight from San Francisco to Southeast Asia, you should book around 6 weeks before departure, which saves you about 22% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

Good to know

Low seasonAugust
Cheapest flightS$ 481
Best time to beat the crowds (11% less expensive on average)
Most popular time to fly (62% more expensive on average)
Flight from San Francisco to Singapore

Flights from San Francisco to Southeast Asia: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from San Francisco to Southeast Asia 
Verified travelerFlew with Singapore Airlines
SFO
-
SIN
Jun 2026
Always book directly with the airlines and avoid aggregators and agents
ClaudiaFlew with United Airlines
SFO
-
SIN
Jun 2026
Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future
Verified travelerFlew with Philippine Airlines
SFO
-
MNL
May 2024
check in online be there early and complete etravel before going to counter
Verified travelerFlew with Singapore Airlines
SFO
-
SIN
Jan 2024
The Singapore Changi airport if huge. After getting of the aircraft, the walk to immigration control was long. Once you get to the control area, the process was quick and easy.

FAQs - booking Southeast Asia flights

  • How does KAYAK find such low prices on flights from San Francisco to Southeast Asia?

    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 San Francisco to Southeast Asia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Southeast Asia?

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

  • What is the Hacker Fare option on flights from San Francisco to Southeast Asia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from San Francisco to Southeast Asia 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 San Francisco to Southeast Asia?

    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 San Francisco to Southeast Asia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from San Francisco to Southeast Asia

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Southeast Asia. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Southeast Asia? 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.
8.2
Singapore AirlinesOverall score based on 1565 reviews
7.8Food
8.6Crew
8.0Comfort
8.3Boarding
8.0Entertainment
Airline reviews

I had selected seats together for my family of three when I first booked my tickets in February. However, I realized only when I checked in at the airport that the seats I had selected were no longer assigned to us and we were completely scattered across three different middle seats instead of being seated together! After requesting the Singapore staff to have us seated together on a full flight, they managed to find something but it was right next to the rest rooms and the whole journey of 15+ hours was really unpleasant. They said that the seat selection isn't locked and the airline can reallocate the seats anytime. No one ever told us this and it was a terribly unpleasant surprise. Will avoid Kayak/underpricer and Singapore in future

2.0 MediocreAnonymous, Jun 2026
SFO - SIN
Read more Singapore Airlines reviews

I had selected seats together for my family of three when I first booked my tickets in February. However, I realized only when I checked in at the airport that the seats I had selected were no longer assigned to us and we were completely scattered across three different middle seats instead of being seated together! After requesting the Singapore staff to have us seated together on a full flight, they managed to find something but it was right next to the rest rooms and the whole journey of 15+ hours was really unpleasant. They said that the seat selection isn't locked and the airline can reallocate the seats anytime. No one ever told us this and it was a terribly unpleasant surprise. Will avoid Kayak/underpricer and Singapore in future

Very concerned with guest comforts going out of their way to accommodate special dietary needs when the guests hadn’t pre-ordered.

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

Flight from SFO did not include entertainment as it was not working the entire duration of the flight. Was informed that there would be a $350 voucher for the inconvenience. Uncertain how the voucher will be provided.

The food options and quality could use some more excitement and variety.

On time boarding I would like to see ground hostess to help transit customers to direct them to the right terminal and boarding gate. Last night, all the transit customers on SQ484 arriving Singapore had to merry go round to look for terminal and boarding gate to board SQ128 transit to KL Malaysia. We went to Terminal 3 taking the Skytrain to T3 and back to T3 to get out to look for different Skytrain to T2. On arrival t2, we had to go round to ask which boarding gate to KL. We only had 5 minutes to make to the boarding time at 6:55pm but we already spent more than 30 minutes running around to find the boarding gate. We were late at the boarding gate.

Leg room and flight sound insulation is very bad. They broke 3 of my bags with bad handling

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

People were so nice! Economy seats were small and cramped feeling for me. I’m slender and 6 feet tall

The singapore airline now compared before covid, I like the service before covid. SQ was the best of all airlines but now I am going to look for different airline if I am travelling in asia.

Excellent communication from the staff. We actually arrived early. Very friendly and professional staff.

No extra snacks were available. Meals quality is terrible. Crew was not friendly.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

It was perfect! United Airlines staff was extremely caring, super friendly and professional

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Lost of requested seat assignments. Lost my husband's meal choice

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

Everything you need to know for your flight to Southeast Asia

Information on your arrival and departure airports