Roundtrip Boston to San Francisco Nonstop Airfares on Delta or United Airlines

No special codes or coupons are required. This deal for roundtrip Boston to San Francisco nonstop airfares is available on Delta or United Airlines.

Travel is available on select dates departing Boston (BOS) from November 17-19, December 4-15, January 7-February 11, and departing San Francisco (SFO) from November 17-19, December 3-16, January 7-February 11.

These are basic economy fares. On Delta, you may have a personal item and a carry-on bag. On United, you may only have a personal item, though United’s policy seats children traveling with adults together. This offer expires February 28, 2026.