💰 When is the cheapest time to fly from San Francisco to Singapore?
This month: Fares bottom at $950, the second cheapest month. Book 4 months ahead for this rate; last-minute fares can hit $1,400.
SFO-SIN fares follow a predictable seasonal pattern: lowest from September to October ($800–$950), moderate in late spring and early summer ($1,000–$1,200), and peaking in December ($1,800–$2,400). Shoulder months like February and August can yield deals if booked 3-4 months out.
Here's a month-by-month look at prices on this route:
✈️ Which airlines fly from San Francisco to Singapore?
Two nonstop carriers and a handful of one-stop airlines compete on SFO-SIN, with prices ranging from $750 to $2,400 round trip. Singapore Airlines leads in service and comfort; United offers strong loyalty perks for MileagePlus members; and EVA Air, Cathay Pacific, and Japan Airlines provide one-stop alternatives that can significantly lower costs for the budget-minded.
United's 787-9 is a solid nonstop option but falls behind Singapore Airlines on seat comfort and cabin humidity. Economy Plus at $200–$400 extra gives 34 inches of pitch — close to premium economy on other carriers — making it the best value upgrade for tall travelers. Avoid United if you're checking two bags; the one-bag limit can sting. On-time performance at SFO is a concern (81%), so leave buffer for connections.
Best for: MileagePlus loyalists, US-based travelers seeking nonstop convenience and Economy Plus upgrade
Singapore Airlines sets the benchmark for this marathon route. The A350-900's higher cabin humidity and 32-inch seat pitch reduce dehydration and fatigue. Premium Economy is a game-changer: 38 inches of pitch and a 13.3-inch IFE screen justify the $800–$1,200 upcharge over economy. KrisFlyer miles can be hard to redeem though; saver awards vanish within minutes.
Best for: Premium service, award-winning cabins, and flyers who prioritize comfort on ultra-long-haul
EVA Air punches above its weight on SFO-SIN, offering two free checked bags and fares often $300–$500 below nonstops. The 4-6 hour stopover in Taipei is a breeze with an airport lounge and efficient transit. Seat pitch is standard 31 inches, but the 777-300ER's 3-3-3 layout feels roomy. Watch for basic economy fares that strip away seat selection; always opt for standard economy.
Best for: Budget travelers with heavy luggage; Taipei stopover adds no visa hassle for US citizens
Cathay's A350-1000 offers a quieter cabin and wider 18-inch seats, making the long-haul leg to HKG pleasant. The HKG-SIN hop is a quick 3.5 hours on a regional A330. One drawback: only one checked bag in economy, so pack light. Use Oneworld status for lounge access and bonus miles. Fares are competitive but rarely the absolute cheapest.
Best for: oneworld elites, travelers wanting a Hong Kong stopover, and those who prefer A350 comfort
JAL offers the most economy legroom among all carriers on this route — 34 inches of pitch as standard. Combine that with two free checked bags, and you have a compelling value for the price. The 787-9 to NRT is modern with 2-4-2 seating in economy, reducing middle seats. The NRT-SIN sector is ~7 hours on a 787-8. On-time performance leads at 90%, so tight connections are less risky.
Best for: Economy comfort with 34-inch seat pitch and the highest on-time reliability
Mubboo verdict: United Economy Plus and Singapore Airlines Premium Economy dominate this ultra-long-haul route. Book 3-4 months out for sub-$900 fares; skip December peak when prices double. For space and service, Singapore Airlines is unbeatable.
Prices shown are approximate averages based on recent searches (April 2026). Actual fares vary by date, class, and availability.
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Compare all flights →📅 When should you book San Francisco to Singapore flights?
Book SFO-SIN flights 3-4 months ahead for the lowest fares. Tuesday and Wednesday departures are 10-15% cheaper than Fridays or Sundays. For fall travel (September-October), start tracking in May; for spring dates, buy by November. Singapore Airlines occasionally runs 48-hour flash sales with 15-20% discounts, so set Google Flights alerts. Avoid booking within 21 days of departure — prices rise sharply. If you see a nonstop round trip below $900, book immediately; it won't go lower.
Summer peak continues. Expect high humidity and crowded attractions, but excellent evening events.
If you're a family flying in summer, book by March — peak season fills up fast.
Budget travelers: shoulder season (Sep–Oct, Apr–May) offers the best balance of price and weather.
💡 This Jul: Purchase in March for July travel; set alerts for price drops.
🏙️ Why visit Singapore?
Singapore packs a futuristic skyline, UNESCO hawker food, and lush gardens into a safe, efficient city-state where English is widely spoken. It’s a gentle introduction to Asia for first-time US travelers and a sensory feast for return visitors. The compact geography means you can explore Chinatown, Little India, and Marina Bay all in one day, then cool off in the Botanic Gardens. Singapore’s multicultural fabric — Chinese, Malay, Indian, and Eurasian — unfolds in its neighborhoods, festivals, and especially its food: Michelin-starred hawker stalls sit steps from $3 Michelin-worthy meals. With Changi Airport itself an attraction and a 90-day visa-free entry for Americans, there’s zero friction to add Singapore as a long layover or a standalone 5-day trip. It’s clean, green, and relentlessly surprising.
What makes Singapore worth the flight:
From the iconic Marina Bay Sands infinity pool to the historic streets of Kampong Glam, Singapore rewards both luxury seekers and budget explorers.
Best neighborhoods to explore:
Buddha Tooth Relic Temple, vibrant shophouses, and Michelin-starred hawker stalls at Maxwell Food Centre. Nightly street markets sell everything from silk robes to keychains.
Tekka Centre is the heart: fresh produce upstairs, cheap thali downstairs. Visit in the evening when Deepavali lights glow and the air smells of jasmine and incense.
Marina Bay Sands’ observation deck ($26 SGD) offers the famous city view. Gardens by the Bay’s Supertree Grove light show is free nightly. Helix Bridge connects to the Singapore Flyer.
Sultan Mosque anchors the Malay heritage area; Haji Lane’s colorful murals and vintage shops feel like a creative quarter. Try a Turkish ice cream before browsing.
ION Orchard and Ngee Ann City host global brands; the real win is basement food halls. Look for Takashimaya’s Japanese food court for matcha soft serve.
Don't miss:
Gardens by the Bay
Cloud Forest dome ($20 SGD) and Supertree Grove (free light show 7:45pm & 8:45pm). Gigantic vertical gardens and a waterfall inside.
Browse Gardens by the Bay tours →Singapore Zoo & Night Safari
Open-concept zoo ($48 SGD) and nocturnal Night Safari ($55 SGD) are world-class. Book online for combo discounts.
Browse Singapore Zoo & Night Safari tours →Marina Bay Sands SkyPark
Observation deck ($26 SGD) or stay for the infinity pool (guests only). Sunset view over the skyline.
Browse Marina Bay Sands SkyPark tours →Haw Par Villa
Quirky theme park with 1,000+ statues depicting Chinese mythology. Free entry; plan 1.5 hours.
Browse Haw Par Villa tours →Changi Jewel
Rain Vortex, indoor forest, and 280+ shops/dining at the airport. $8 SGD canopy park; free waterfall light show.
Browse Changi Jewel tours →Buddha Tooth Relic Temple
Tang dynasty-style temple in Chinatown housing a sacred relic. Free entry; rooftop garden has a hidden prayer wheel.
Browse Buddha Tooth Relic Temple tours →Mubboo Verdict:
Singapore is a no-brainer for US travelers wanting an exotic yet easy first Asia trip. It's safe, English-friendly, and endlessly rewarding — just budget for accommodation and avoid December crowds.
🎟️ Top activities in Singapore
Ranked by traveler ratings and recent booking volume.
Departure Transfer: Pick up from hotel to Airport or CruiseCentre
$78.41Explore a Rainforest teeming with Wildlife at Night!
$86.34Source: Viator · Prices in USD · Affiliate links.
🧳 What do you need to know before flying to Singapore?
🛂 Do Americans need a visa for Singapore?
US citizens do not need a visa for tourist or business stays up to 90 days. Passport must be valid for 6 months beyond arrival. No visa-on-arrival or eVisa required, simply present your passport at immigration. Bring proof of onward travel.
🕐 What's the time difference?
Singapore Time (SGT) is UTC+8, with no daylight saving time. SFO is on Pacific Time (UTC-7 in summer, UTC-8 in winter), so the time difference is 15 hours in summer and 16 hours in winter. This means a 10 pm SFO departure lands at 6 am Singapore time two calendar days later.
🚇 How do you get from the airport to the city?
Changi Airport to downtown Singapore: 17 km northeast.
| Option | Time | Cost | Best for |
|---|---|---|---|
| MRT train | 35-40 min | $2 SGD (~$1.50 USD) | Solo budget travelers light luggage |
| Taxi | 25-30 min | $20-40 SGD (~$15-30 USD) | Groups of 3-4 with bags |
| Grab (ride-share) ✅ | 25-30 min | $25-35 SGD (~$19-27 USD) | Best value & convenience, app-based |
| Airport shuttle bus | 45-60 min | $9 SGD (~$7 USD) | Budget-conscious to major hotels |
Editor's pick: Grab is the easiest — queue virtually and pay via the app. MRT is cheapest but avoid during peak humidity with heavy luggage.
💷 What about money and tipping?
The Singapore Dollar (SGD) trades at approximately 1.28 SGD per 1 USD as of 2026. Credit cards are accepted nearly everywhere, but hawker stalls and small shops often prefer cash or local payment apps. ATMs are widespread. Tipping is not customary.
Singapore currency snapshot
1 USD = 1.29 SGD
1 SGD = $0.773 USD
Singapore Dollar
Source: open.er-api.com · Updated Jul 1, 2026 · Rates fluctuate — check before booking.
📱 Will your phone work?
Country code +65. Local mobile data is cheap: a prepaid SIM with 10 GB costs ~$15 SGD from Changi vending machines or convenience stores. Your US phone likely works on roaming, but check your plan.
☁️ Singapore climate overview
Avoid: Jan, Mar, AprHistorical highs, lows, and rainfall by month. Plan packing and outdoor time around the extremes.
Jan
85°/73°F
16.3″ rain
Feb
87°/75°F
2.9″ rain
Mar
85°/76°F
12.3″ rain
Apr
88°/76°F
12.6″ rain
May
90°/75°F
8.7″ rain
Jun
89°/77°F
5.5″ rain
Jul
87°/78°F
3.6″ rain
Aug
87°/75°F
8.9″ rain
Sep
86°/75°F
6.7″ rain
Oct
89°/75°F
5.6″ rain
Nov
84°/77°F
5.0″ rain
Dec
86°/74°F
9.8″ rain
Source: Open-Meteo Archive API · 2025 historical data · Updated July 2026
Ready to lock in your fare? Search live prices below:
✈️ Ready to book? Compare San Francisco to Singapore flights
Search flights →🛫 Flying from San Francisco — airport tips
Terminal 2 — United Airlines gates (United Airlines)
- Clear immigration within 15-20 minutes; e-gates for US citizens.
- MRT station is directly beneath the terminal, follow signs to "Train to city".
- Grab a free snooze chair in the transit area if connecting onward, or visit the outdoor sunflower garden.
Terminal 3 — Singapore Airlines gates (Singapore Airlines)
- Priority lane for Premium Economy and Business passengers can cut wait time to 5 minutes.
- The SilverKris lounge (Business Class) has a sit-down dining room and showers — worth it if you can access.
- If heading straight to the city, the MRT platform is a 5-minute walk from the gate exit.
Terminal 1 — One-stop arrivals (EVA, JAL, Cathay) (EVA Air, Japan Airlines, Cathay Pacific)
- Terminal 1 arrivals often have shorter immigration queues than T2/T3 during peak morning hours.
- Jewel Changi is connected via a 3-minute covered walkway from T1; visit the Rain Vortex after clearing customs.
- For ride-share, head to the dedicated pickup point outside Door 3; Grab app works like Uber.
🚐 Skip the hassle? Book a private airport transfer
Fixed price, meet & greet at arrivals, door-to-door service
💡 Insider tips: San Francisco to Singapore
Book the ‘Tuesday cheap seat’ on United for 34-inch pitch at no extra costMubboo original data
United’s 787-9 has a handful of Economy Plus seats sold as standard economy on certain Tuesday departures. These seats — rows 16-21, aisle or window — frequently appear as no-upcharge options 3-4 months out when booking directly on united.com. Set a seat alert in ExpertFlyer and grab them immediately; they give 34 inches of pitch, the same as JAL’s standard economy but on a nonstop flight. This pattern holds most reliably for SFO-SIN departures on Tuesdays and Wednesdays.
Skip the ‘free’ checked bag on United and pack carry-on only to save $100+
United’s basic economy on this route doesn’t include a checked bag, but standard economy’s 1-bag allowance still adds $30–$60 in bag fees if you exceed it. Instead, pack a carry-on that fits the 787’s generous overhead bins — 22x14x9 inches — and a personal item. Laundry services in Singapore cost ~$10 SGD per load, so you can pack light and wash mid-trip. This avoids the weight game and speeds up your Changi exit.
Use Singapore Airlines’ ‘Book the Cook’ for a premium meal even in economy pre-orderMubboo original data
Singapore Airlines allows economy passengers to pre-order special meals 24 hours ahead, including a lobster thermidor from ‘Book the Cook’ via the ‘Manage Booking’ portal for a $40 SGD ($30 USD) fee. The option is hidden under ‘Special Meal Requests — Premium Selection.’ It’s not advertised but can be booked on any SFO-SIN flight. Do this for both outbound and return; it beats the standard economy chicken or fish by a mile.
Connect via Taipei on EVA Air for a $500 saving and two checked bags
EVA Air’s SFO-TPE-SIN routing often comes in $500 below nonstop fares and includes two 23 kg checked bags — the best bag-to-price ratio on this route. The 4-6 hour layover is easy: TPE has free lounges for transit passengers (near Gate D) with showers and sleeping areas. Book on weekdays for the lowest fares; Mondays and Thursdays show the best availability. This is Mubboo’s top pick for budget travelers who need baggage.
Avoid rear economy seats on United’s 787-9 — the galley noise kills sleep
Rows 30-35 on United’s 787-9 are directly in front of the rear galley, where flight attendants prep meals and chat during the 17-hour flight. The noise and light from the galley disrupt sleep cycles across multiple time zones. Instead, aim for rows 16-21, which are forward of the wing and quieter. Seatguru and recent passenger reports consistently flag this area as the worst on the aircraft — skip it even if those are the only ‘free’ seats left.
👥 Who flies this route — and what they should know
Business traveler on MileagePlus
Featured this monthRecommended: United Economy Plus (nonstop), departure 22:35 SFO. Arrive at 06:00 two days later, giving a full workday. Economy Plus (34-inch pitch) at $300 upcharge is worth it for laptop work. Accumulates 1.5 Premier qualifying points per dollar on a ~$1,200 ticket. Terminal 3 at SFO has United Club; use it before boarding. Mubboo Pick: United’s evening schedule maximizes pre-departure work time. Skip Business Class unless Polaris is $3,500 or less — not guaranteed. Arrival morning shower at Changi’s pay-per-use lounge ($20 SGD) freshens you up.
First-time Singapore tourist
Recommended: Singapore Airlines economy, evening departure from SFO, 19:30. Arrive at SIN at 06:00 two days later, clear immigration and take the MRT (35 min, $1.50) to your Chinatown hotel. Singapore’s morning light and hawker breakfasts make an immediate impression. Book this flight 3 months ahead for ~$950 round trip. Mubboo Pick: The evening departure lets you sleep through the flight and hit the ground running. Avoid United’s rear cabin seats — row 30+ — they ruin this plan with galley noise.
Foodie exploring hawker centers
Recommended: EVA Air economy, afternoon departure 13:40 SFO via TPE. Arrive SIN 18:00 next day — just in time for dinner at Lau Pa Sat hawker centre. The 2 free checked bags let you bring home spices and sauces. Mubboo Pick: EVA’s $750 fare saves $400 over nonstop for more Michelin meals. Transit at Taipei: use the Hello Kitty lounge if you have Priority Pass; it’s fun. Avoid Singapore Airlines’ nonstop if you’re on a strict food budget — the $200 savings on EVA buys 10 hawker feasts. Book 5 months out for a Tuesday departure for the lowest fare.
Honeymoon couple seeking comfort
Recommended: Singapore Airlines Premium Economy, evening 19:30 SFO — two window-aisle seats in forward economy cabin. Extra legroom (38-inch pitch) and champagne welcome set the tone. The 17-hour flight becomes part of the luxury experience, not an ordeal. Arrive 06:00 and go straight to Marina Bay Sands for early check-in. Mubboo Pick: Premium Economy at $1,800 each is half the cost of Business Class but feels 80% as premium. Book 5 months out for availability; only 3 rows of PE on the A350. Avoid United’s Premium Plus — the hard product is similar but service lags.
Solo budget traveler with two bags
Recommended: Japan Airlines economy, evening 22:25 SFO via NRT — 2 free 23 kg bags included. The 34-inch seat pitch is as good as United’s Economy Plus but costs $200 less. Total travel time 22 hours; the 6-hour Narita transit is manageable with a Priority Pass lounge nap. Mubboo Pick: JAL offers the most economy comfort per dollar on this route. Avoid the nonstops if you have two bags — both charge $100+ for the second checked bag. Book this routing 4 months out for $1,000. Return flight JAL via NRT also allows same baggage generosity.
Luxury traveler requiring flat bed
Recommended: Singapore Airlines Business Class, 19:30 SFO — direct aisle access, fully flat bed, Book the Cook lobster thermidor. Use KrisFlyer miles (92,000 one-way) or transfer from Amex/Capital One. Cash fare often $6,000+; wait for a flash sale at $4,500 to book. Mubboo Pick: SQ’s Business Class is the best way to cross the Pacific, with two sleep cycles possible. Avoid United Polaris at the same price — the dining and service don’t compare. Book 5 months out and monitor for award space daily; a single Saver seat can appear randomly.
⚖️ Flight delayed or canceled?
Flights departing the US are covered by DOT regulations: if your nonstop is canceled or delayed more than 4 hours, United or Singapore Airlines must rebook you on the next available flight at no extra cost, though compensation is not mandated. For one-stop itineraries connecting in Asia, EU261-style protections generally do not apply, but Singapore Airlines' voluntary policy often provides hotel and meals for overnight delays. Changi Airport offers excellent 24-hour facilities if stranded. Always book with a credit card that includes trip delay insurance for extra protection.
📱
Free option: Buy a $15 SGD Singtel SIM at Changi’s 24/7 vending machines in arrivals; it’s the same price as an eSIM and you get a local number for ride-share verification.
Stay connected upon landing with a local eSIM — no physical SIM swap needed. Choose from 5 GB for $4.50 (Saily) to 10 GB for $9 (Airalo). All provide 4G/5G speeds on Singtel and StarHub networks.
🛡️
Free option: Check if your credit card already covers trip delays; the Chase Sapphire Reserve provides up to $500 delay insurance per ticket at no cost.
SFO-SIN is an ultra-long-haul route where delays happen — United’s 81% on-time rate means 1 in 5 flights are late. A policy with $500+ trip delay coverage kicks in after 6 hours, covering meals and a hotel if you’re stuck at SFO or NRT.
🚗
Free option: Grab rideshare from the airport pickup point costs $25 SGD and is just as fast—download the app before your trip.
Skip the taxi queue after a 17-hour flight with a pre-booked private car. Meet at arrivals with a name sign; 35 minutes to downtown for $40 SDG ($30 USD). Ideal for groups with luggage.
Emergency contacts in Singapore
Frequently asked questions about San Francisco to Singapore flights
Only United Airlines and Singapore Airlines operate nonstop flights on this route. United uses a Boeing 787-9 with 31-inch economy pitch; Singapore Airlines flies an Airbus A350-900 with 32-inch pitch and superior cabin humidity. Both airlines offer 7-8 weekly flights each, departing in the evening from SFO and arriving in Singapore the following morning, making the 17-hour journey ideal for sleeping.
Researched by Mubboo Editorial Team · Reviewed by Richard Lee, Founder
Prices from Aviasales. Seasonal advice updated: July 2026 · Last editorial review: 2026-05-24 · Government info: travel.state.gov
Prices last updated 8h ago · cached fares aggregating 800+ airlines and agencies · Check current prices →
M verdicts are based on editorial research — not pulled from a database.