San Francisco on points
United's Pacific gateway. Best US airport for Asia premium awards via Polaris and Star Alliance partners.
San Francisco International Airport sits at the center of one of the richest award ecosystems in the country. United operates its primary transpacific hub here, which means Star Alliance metal is stacked deep across SFO's international gates. Beyond United's own Polaris widebodies, foreign carriers including Singapore Airlines, ANA, Cathay Pacific, EVA Air, and Lufthansa all fly nonstop from SFO, giving points travelers an unusually dense menu of premium-cabin hardware on routes to Tokyo, Hong Kong, Singapore, London, and Frankfurt. No other US airport concentrates this many foreign widebody operators on Asia-Pacific routes, which is why SFO belongs near the top of any serious redemption shortlist.
The strongest sweet spots running through SFO today cluster on the transpacific routes. ANA Mileage Club prices round-trip business class to Japan (SFO-NRT) at 88,000 ANA miles in its standard saver chart, and that program prices its own metal honestly. Singapore KrisFlyer prices SFO-SIN in business class at 105,000 KrisFlyer miles round-trip on Singapore Airlines' A350 or A380 flights; saver space on that specific product is tightly held, so confirming seats before transferring any points is essential. Cathay Pacific's Asia Miles program prices SFO-HKG business class at 110,000 miles round-trip, and EVA Air's Royal Laurel cabin to Taipei can sometimes be booked through Star Alliance partners at competitive rates. These are the numbers worth targeting, but availability on premium cabins is severely capacity-controlled and varies significantly by season and booking lead time.
Star Alliance has the deepest institutional presence at SFO, and that shapes the optimal program strategy here. United MileagePlus is the natural anchor: it prices United Polaris saver awards at 70,000 miles one-way in business class to Japan and 80,000 miles to Southeast Asia, and it also serves as a transfer partner for Chase Ultimate Rewards. At our 2.0¢ valuation for Chase UR, a Polaris business redemption at 70,000 miles represents roughly $1,400 in conservative value, which compares favorably to cash fares when Polaris seats are open. ANA Mileage Club, also Star Alliance, gives a second angle on the same flights with different pricing logic and sometimes different availability windows. Building a dual-currency position in both MileagePlus and ANA miles before you search is a reasonable hedge.
Positioning into SFO from a smaller home airport is often worth the calculus. If you are based in Sacramento, Fresno, Portland, or any mid-sized Western city, domestic saver space into SFO on United or Alaska is generally more accessible than finding a premium transpacific seat departing from your home market directly. Alaska Mileage Plan, which transfers from several major card currencies, is particularly useful for booking Alaska-marketed positioning flights into SFO at low mileage costs. The logic only works if you lock the transpacific saver seat first; positioning a day before departure gives you a buffer against irregular operations on the short inbound segment. Factor in the cost of a night near SFO if your transpacific departure is early morning.
A few practical notes on currency stacking for SFO redemptions. Chase Ultimate Rewards transfers 1:1 to United MileagePlus and Singapore KrisFlyer; American Express Membership Rewards transfers 1:1 to ANA Mileage Club. Citi ThankYou transfers 1:1 to Cathay Pacific Asia Miles. These ratios are confirmed transfer partnerships, not assumptions. Given our 2.0¢ CPP floor for UR and comparable conservative valuations for MR, the math on a premium transpacific redemption at 70,000 to 110,000 miles tends to hold up well against business-class cash prices, which routinely exceed $4,000 round-trip on SFO-Asia routes. The leverage is real, but only if saver inventory exists when you search.
Find space first, then transfer.
Top international routes from SFO
International carriers operating from SFO
Each carrier links to its full award guide, best program, hub network, and saver pricing.