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Cheap flights from San Francisco to Southeast Asia from £278

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BKK
30 Aug — 6 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco to Southeast Asia

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Southeast Asia
Explore the most affordable flight options available from San Francisco to Southeast Asia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2026.

Wed 19/822:50
SFO
-
SIN
Nonstop16h 25m
United Airlines
Mon 7/920:35
SIN
-
SFO
Nonstop15h 45m
United Airlines
Deal found 28/7£519
Sun 2/811:10
SFO
-
SIN
Nonstop16h 25m
United Airlines
Tue 18/808:45
SIN
-
SFO
Nonstop15h 45m
United Airlines
Deal found 29/7£520
Sun 16/810:55
SFO
-
SIN
1 stop28h 45m
United Airlines
Thu 10/920:35
SIN
-
SFO
Nonstop15h 30m
United Airlines
Deal found 28/7£526
Tue 25/809:00
SFO
-
SIN
2 stops30h 40m
United Airlines
Sun 6/908:45
SIN
-
SFO
Nonstop15h 45m
United Airlines
Deal found 28/7£527
Mon 17/811:10
SFO
-
SIN
Nonstop16h 25m
United Airlines
Wed 2/911:05
SIN
-
SFO
1 stop37h 40m
United Airlines
Deal found 30/7£527
Fri 21/812:40
SFO
-
SIN
1 stop21h 05m
United Airlines
Fri 4/908:45
SIN
-
SFO
Nonstop15h 45m
United Airlines
Deal found 30/7£528
Mon 24/807:30
SFO
-
SIN
2 stops26h 15m
United Airlines
Sat 5/908:45
SIN
-
SFO
Nonstop15h 45m
United Airlines
Deal found 28/7£529
Sun 16/807:41
SFO
-
SIN
2 stops31h 59m
United Airlines
Sat 12/920:35
SIN
-
SFO
Nonstop15h 30m
United Airlines
Deal found 28/7£530
Tue 18/808:50
SFO
-
SIN
2 stops24h 55m
United Airlines
Fri 28/808:45
SIN
-
SFO
Nonstop15h 45m
United Airlines
Deal found 30/7£531
Thu 10/911:45
SFO
-
MNL
1 stop36h 55m
Singapore Airlines
Mon 28/918:35
MNL
-
SFO
1 stop30h 15m
Singapore Airlines
Deal found 29/7£594
Sat 12/922:50
SFO
-
MNL
1 stop37h 15m
Vietnam Airlines
Thu 24/904:05
MNL
-
SFO
1 stop28h 50m
Vietnam Airlines
Deal found 28/7£598
Wed 9/922:50
SFO
-
MNL
1 stop37h 15m
Vietnam Airlines
Tue 2/304:00
MNL
-
SFO
1 stop29h 00m
Vietnam Airlines
Deal found 29/7£601

Find flight deals from San Francisco to Southeast Asia

Keep the following information in mind while searching for San Francisco to Southeast Asia flight deals. Data was last updated 31 July 2026.

Round-trip from

£519

One-way from

£278

Popular in

December

Cheapest in

September

Average price

£874
United Airlines
  • United Airlines
  • 13/8-24/8
  • Nonstop
  • 32h 20m total
  • San Francisco to Southeast Asia
Search Deals
United Airlines
  • United Airlines
  • 6/9
  • Nonstop
  • 16h 35m total
  • San Francisco to Southeast Asia
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£32 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Southeast Asia 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, Cheapflights users made 858,174 searches. Data last updated 31 July 2026.
Use the filters below to find and compare flights from San Francisco to Southeast Asia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Tue 25/8

01:40-06:40

1 stop38h 00m

Singapore Changi

Wed 2/9

20:35-21:20

Nonstop15h 45m

£526

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 27/9

01:10-06:40

1 stop38h 30m

Singapore Changi

Tue 3/11

10:10-09:15

Nonstop15h 05m

£526

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 13/9

10:35-06:40

1 stop29h 05m

Singapore Changi

Sun 20/9

08:45-09:15

Nonstop15h 30m

£526

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Thu 3/9

01:10-06:40

1 stop38h 30m

Singapore Changi

Sun 13/9

20:35-21:05

Nonstop15h 30m

£526

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Tue 15/9

10:50-18:35

Nonstop16h 45m

Singapore Changi

Fri 25/9

06:15-10:30

1 stop19h 15m

£528

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Thu 10/9

10:50-18:35

Nonstop16h 45m

Singapore Changi

Tue 15/9

11:05-16:30

1 stop20h 25m

£528

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 6/9

08:50-06:40

2 stops30h 50m

Singapore Changi

Tue 15/9

20:35-21:05

Nonstop15h 30m

£530

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 4/10

07:00-00:45

2 stops26h 45m

Singapore Changi

Sat 10/10

20:35-21:05

Nonstop15h 30m

£531

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Fri 30/10

22:50-06:55

2 stops41h 05m

Singapore Changi

Tue 24/11

10:10-09:15

Nonstop15h 05m

£536

San FranciscoManila

SFO - MNL

SFOMNL

San Francisco

Wed 18/11

23:55-06:50

Nonstop14h 55m

Manila Ninoy Aquino Intl

Wed 9/12

09:55-06:35

Nonstop12h 40m

£737

Flights are sorted by cheapest return flights first.

Deals found on 30/7

Showing 1-10 of 59 resultsSorted by cheapest first
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Best time to book a flight from San Francisco to Southeast Asia

Have a flexible travel schedule? Discover the best time to fly to Southeast Asia from San Francisco with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Southeast Asia

What is the cheapest month to book a flight from San Francisco to Southeast Asia?

Currently, October is the cheapest month in which you can book a flight from San Francisco to Southeast Asia (average of £595). Flying from San Francisco to Southeast Asia in December is currently the most expensive (average of £1,029). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to YJX?

Find hourly flight availability from San Francisco to Southeast Asia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 July 2026.

When flying from San Francisco to Southeast Asia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Southeast Asia. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Southeast Asia

Get insights into the airlines that provide service to Southeast Asia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Southeast Asia. Reviews last updated 31 July 2026.
Check out reviews from past customers who have flown with Cathay Pacific and Philippine Airlines from San Francisco to Southeast Asia to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Cathay Pacific
7.6
Good
1,433 reviews
Check prices

Food

7.3

Entertainment

7.7

Crew

8.1

Overall

7.6

Boarding

7.9

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Ernest,Jun 2026

SFO - HKG

As good as can be expected for economy class international flight, on time very professional crew. The plane was clean bathrooms clean, decent food, connecting flight on time, with another tasty meal. Love Cathay Pacific
Cathay Pacific
7.6
Good
1,433 reviews
Cathay Pacific
7.6
Good
1,433 reviews
Check prices

Food

7.3

Entertainment

7.7

Crew

8.1

Overall

7.6

Boarding

7.9

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Ernest,Jun 2026

SFO - HKG

As good as can be expected for economy class international flight, on time very professional crew. The plane was clean bathrooms clean, decent food, connecting flight on time, with another tasty meal. Love Cathay Pacific
Philippine Airlines
7.3
Good
1,012 reviews
Cathay Pacific
7.6
Good
1,433 reviews
Check prices

Food

7.3

Entertainment

7.7

Crew

8.1

Overall

7.6

Boarding

7.9

Comfort

7.5

Reviews

1 / 20
10.0
Excellent

Ernest,Jun 2026

SFO - HKG

As good as can be expected for economy class international flight, on time very professional crew. The plane was clean bathrooms clean, decent food, connecting flight on time, with another tasty meal. Love Cathay Pacific

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Southeast Asia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Francisco to Southeast Asia?

    If you book a flight to Southeast Asia from San Francisco, you will be flying from San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.0 mi from the center of San Francisco.

  • How long is the flight from San Francisco to Southeast Asia?

    A quick flight from San Francisco to Southeast Asia can take about 28h 25m. United Airlines provides one of the quickest options available for as low as £778. There are 8669 mi between San Francisco and Southeast Asia. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from San Francisco to Southeast Asia?

    While some choose either San Francisco - Jakarta Soekarno-Hatta Intl or San Francisco - Singapore Changi, San Francisco - Manila Ninoy Aquino Intl is the most popular route from San Francisco to Southeast Asia.

  • Can I find deals for flights from San Francisco to Southeast Asia that include hotel bookings?

    Yes. In addition to deals on San Francisco to Southeast Asia flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Southeast Asia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Southeast Asia.

  • Can I find deals for business class flights from San Francisco to Southeast Asia?

    Yes. Cheapflights offers flight deals from San Francisco to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to Southeast Asia?

    Currently, October is the cheapest month in which you can book a flight from San Francisco to Southeast Asia (average of £595). Flying from San Francisco to Southeast Asia in December is currently the most expensive (average of £1,029). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from San Francisco to Southeast Asia

Discover the top 2 airlines that operate flights from San Francisco to Southeast Asia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 31 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest£486Average£969FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Philippine AirlinesCheapest£551Average£723FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco to Southeast Asia?

Deals for San Francisco to Southeast Asia flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Southeast Asia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Francisco to Southeast Asia.

Can Cheapflights find flights from San Francisco to Southeast Asia with no change fees?

Need flexible booking options for your flight to Southeast Asia from San Francisco? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from San Francisco to Southeast Asia become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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