Cheap flights from San Francisco to Southeast Asia from £252

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BKK
26 Aug — 2 Sep1
1 adult

Cheap 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 21 August 2025.

Round-trip from

£475

One-way from

£252

Popular in

December

Cheapest in

September

Average price

£597
United Airlines
  • United Airlines
  • 15/9-1/10
  • Nonstop
  • 32h 10m total
  • San Francisco to Southeast Asia
United Airlines
  • United Airlines
  • 9/9
  • Nonstop
  • 16h 35m total
  • San Francisco to Southeast Asia
Highest demand for flights based on searches. 11% potential increase in price (£67 potential increase over avg. return price).
Cheapest flight prices on average. 5% potential price decrease (£28 potential savings vs. average return price).
Average for round-trip flights in August 2025

Find flight deals from San Francisco to Southeast Asia

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 21 August 2025.

Mon 15/910:45SFO - SIN
Nonstop16h 40mUnited Airlines
Wed 1/1020:40SIN - SFO
Nonstop15h 30mUnited Airlines
Deal found 20/8£475
Sat 20/910:45SFO - SIN
Nonstop16h 40mUnited Airlines
Tue 14/1008:45SIN - SFO
Nonstop15h 30mUnited Airlines
Deal found 18/8£476
Fri 26/910:45SFO - SIN
Nonstop16h 40mUnited Airlines
Wed 8/1011:05SIN - SFO
1 stop20h 25mUnited Airlines
Deal found 21/8£483
Mon 15/911:35SFO - SIN
1 stop22h 10mUnited Airlines
Tue 14/1008:45SIN - SFO
Nonstop15h 30mUnited Airlines
Deal found 18/8£485
Tue 16/913:00SFO - SIN
2 stops26h 40mUnited Airlines
Tue 14/1008:45SIN - SFO
Nonstop15h 30mUnited Airlines
Deal found 18/8£487
Sun 14/920:52SFO - SIN
2 stops36h 53mUnited Airlines
Sat 18/1020:40SIN - SFO
Nonstop15h 30mUnited Airlines
Deal found 18/8£489
Fri 19/910:45SFO - SIN
Nonstop16h 40mUnited Airlines
Thu 2/1011:05SIN - SFO
2 stops24h 05mUnited Airlines
Deal found 19/8£491
Sun 21/910:45SFO - SIN
Nonstop16h 40mUnited Airlines
Tue 14/1006:15SIN - SFO
2 stops27h 50mUnited Airlines
Deal found 20/8£493
Tue 23/909:50SFO - SIN
2 stops29h 50mUnited Airlines
Thu 9/1011:05SIN - SFO
1 stop20h 25mUnited Airlines
Deal found 21/8£494
Sun 14/923:55SFO - SIN
1 stop32h 25mPhilippine Airlines
Sat 20/900:20SIN - SFO
1 stop35h 30mPhilippine Airlines
Deal found 21/8£496
Sun 31/801:05SFO - MNL
1 stop27h 05mCathay Pacific
Mon 15/912:30MNL - SFO
1 stop20h 20mCathay Pacific
Deal found 20/8£506
Thu 13/1122:55SFO - MNL
1 stop18h 45mCathay Pacific
Tue 25/1119:40MNL - SFO
1 stop17h 35mCathay Pacific
Deal found 19/8£507

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 21 August 2025.
Use the filters below to find and compare flights from San Francisco to Southeast Asia that are best for you.

Fly from

San Francisco

Fly to

Southeast Asia

Route

Depart

Return

Price

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Thu 18/9

10:45-18:25

Nonstop16h 40m

Singapore Changi

Sat 18/10

20:40-21:10

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Thu 18/9

22:40-06:15

Nonstop16h 35m

Singapore Changi

Tue 14/10

08:45-09:15

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 14/9

10:45-18:25

Nonstop16h 40m

Singapore Changi

Thu 16/10

08:45-09:15

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 14/9

22:40-06:15

Nonstop16h 35m

Singapore Changi

Tue 14/10

20:40-21:10

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Fri 26/9

10:45-18:25

Nonstop16h 40m

Singapore Changi

Tue 7/10

08:45-09:15

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sat 20/9

10:45-18:25

Nonstop16h 40m

Singapore Changi

Wed 8/10

08:45-09:15

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Mon 15/9

10:45-18:25

Nonstop16h 40m

Singapore Changi

Wed 15/10

08:45-09:15

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sun 21/9

22:40-06:15

Nonstop16h 35m

Singapore Changi

Mon 6/10

08:45-09:15

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Sat 20/9

22:40-06:15

Nonstop16h 35m

Singapore Changi

Fri 10/10

20:40-21:10

Nonstop15h 30m

£476

San FranciscoSingapore

SFO - SIN

SFOSIN

San Francisco

Fri 19/9

10:45-18:25

Nonstop16h 40m

Singapore Changi

Wed 15/10

20:40-21:10

Nonstop15h 30m

£476

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 52 results
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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, May is the cheapest month in which you can book a flight from San Francisco to Southeast Asia (average of £717). Flying from San Francisco to Southeast Asia in December is currently the most expensive (average of £1,123). 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 21 August 2025.

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.

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 21 August 2025.
Check out reviews from past customers who have flown with STARLUX Airlines, EVA Air, andSingapore 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.
STARLUX Airlines
9.0
Wonderful

Boarding

9.0

Food

8.8

Entertainment

8.9

Comfort

9.0

Crew

9.3

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful
STARLUX Airlines
9.0
Wonderful

Boarding

9.0

Food

8.8

Entertainment

8.9

Comfort

9.0

Crew

9.3

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful

Boarding

9.0

Food

8.8

Entertainment

8.9

Comfort

9.0

Crew

9.3

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful

Boarding

9.0

Food

8.8

Entertainment

8.9

Comfort

9.0

Crew

9.3

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful

Boarding

9.0

Food

8.8

Entertainment

8.9

Comfort

9.0

Crew

9.3

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.0
Wonderful

Boarding

9.0

Food

8.8

Entertainment

8.9

Comfort

9.0

Crew

9.3

Overall

9.0

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 11.8 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 16h 40m. United Airlines provides one of the quickest options available for as low as £476. There are 8433 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?

  • 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, May is the cheapest month in which you can book a flight from San Francisco to Southeast Asia (average of £717). Flying from San Francisco to Southeast Asia in December is currently the most expensive (average of £1,123). 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

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Top 6 airlines flying from San Francisco to Southeast Asia

Discover the top 6 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 21 August 2025.
AirlineCheapestAverageFlexibilityOn-time
Cathay PacificCheapest£548Average£552FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
Singapore AirlinesCheapest£565Average£799FlexibilityNo cancel feeOn-time81%
Search Singapore Airlines flights
STARLUX AirlinesCheapest£584Average£592FlexibilityNo cancel feeOn-timeN/A
Search STARLUX Airlines flights
Philippine AirlinesCheapest£594Average£947FlexibilityNo cancel feeOn-time60%
Search Philippine Airlines flights
United AirlinesCheapest£600Average£722FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
EVA AirCheapest£607Average£642FlexibilityNo cancel feeOn-time74%
Search EVA Air flights

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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.

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