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San Francisco – Singapore. $641 (Basic Economy) / $841 (Regular Economy). Roundtrip, including all Taxes – The Flight Deal

Miles@Flyingfrugal by Miles@Flyingfrugal
June 13, 2025
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Exciting offer for nonstop flights to Singapore!

United Airlines is offering a regular economy fare at $841, which includes TWO checked bags, a standard carry-on, and the ability to select seats in advance.

Alternatively, a Basic Economy fare is available for $641, but it comes with several restrictions:

  • No advance seat assignments
  • Only the first checked bag is included; the second bag costs $100 each way
  • No changes allowed
  • No cancellations allowed – if canceled after the 24-hour risk-free period, the fare has no value for future flights
  • Many online travel agencies may not clearly indicate these fares as Basic Economy

Subscribe to our Real Time Newsletter for economy class deals tailored to your city, delivered about an hour before they hit our website and social media – all for just a nickel a day.

Interested in Business Class, First Class, or Premium Economy offers? Subscribe to our Premium Newsletter for about a quarter a day.

Singapore – Photo: b i b o y w o r x x x via Flickr, used under Creative Commons License (By 2.0)

Sample Travel Dates:

  • January 22nd – 29th, 2026
  • This is just one sample travel date. For more options, please refer to the “Fare Availability” and “How to Search for Availability” sections below.

Fare Availability:

  • Valid for travel from late September to early October or late January to early February 2026. A Sunday stay is required. Seat availability is limited, and tickets must be purchased at least 3 days before departure.
  • Please note, if this post is over two days old, the fare may no longer be available.

Checking for Availability:

  • This section is for checking availability only. To purchase tickets, see the “How to Buy” section below.
  • Use the Matrix Airfare Search by ITA Software with the following details:
    • Origin: SFO
    • Routing Code: ua
      • Use these codes in Matrix to search for Basic Economy fares. When booking with United, you’ll have the option to upgrade to regular economy.
    • Destination: SIN
    • Return Routing Code: ua
    • (Click on “Advanced Codes” to access routing code input)
    • Select “See calendar of lowest fares”
    • Duration “10-17” (This is just a sample; you can use any 7-day range like 3-10, 7-14, etc.)
  • Check out the Beginner’s Guide on Using Matrix by ITA Software.
  • Learn how to read airfare rules to maximize your advantages.
  • Your Matrix Airfare Search by ITA Software page should look like this after entering the values.

  • You cannot purchase tickets directly from Matrix Airfare Search by ITA Software. To buy, follow the “How to Buy” instructions below.

Fare Class:

Elite Qualifying Dollars:

Routing:

  • SFO – SIN (Singapore) – SFO

Stopover:

Mileage:

  • Miles Flown: 16,870 miles or 3.8 cents per mile (Basic Economy) / 5.0 cents per mile (Regular Economy)
  • Redeemable Miles: 3,580 miles

How to Purchase:

  • Book directly on United with the dates found using Matrix Airfare Search by ITA Software.

Accommodations

  • TripAdvisor – A leading hotel meta-search engine that helps you find the best hotel prices from over 200 sites.

Car Rentals

  • Rental Cars – Offers a broad selection from top car rental agencies including Hertz, Avis, Budget, Dollar, and Enterprise.

Activities and Tours

  • Viator – The largest marketplace for activities and tours at your destination.

Important Information:

  • Visa: No visa required for US Citizens. Other nationals should check the TIMATIC Visa Database.
  • Currency: Singapore Dollar (SGD). Exchange rate approx. $1 USD = 1.28 SGD.

Tips for Using Credit Cards Abroad:

Stay updated with the latest flight deals from San Francisco / Bay Area:

* The Flight Deal may receive a commission if you book accommodation, car rentals, activities, or apply for a credit card through our links. We appreciate your support!

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To stay informed about our latest deals, LIKE our The Flight Deal Facebook Page, follow us on Twitter @TheFlightDeal, Threads @TheFlightDeal, or subscribe to our RSS Feed or Daily Email List.

The Flight Deal does not sell travel products or services but provides information on third-party suppliers’ offers and links to their sites. While the information is accurate at posting, prices and availability may change without notice. Please refer to the supplier’s site for the most current details and terms.


Tags: BasicdealEconomyflightFranciscoincludingRegularRoundtripSanSingaporeTaxes
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June 14, 2025
San Francisco – Singapore. 1 (Basic Economy) / 1 (Regular Economy). Roundtrip, including all Taxes – The Flight Deal

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