Business Class Flights from San Francisco to Reykjavik

For travelers from San Francisco (SFO) to Reykjavik (REK), midsummer is the mildest: July averages about 52.0°F (11.1°C) with roughly 50 mm of rain, while January sits near 30.9°F (-0.6°C) with about 85 mm; pack breathable layers for summer and insulated outerwear for winter.

Shoulder periods offer workable weather and lower fares than peak: May runs about 43.2°F (6.2°C) with ~50 mm rain and September about 45.7°F (7.6°C) with ~80 mm; choose May or September to balance daylight, conditions, and price.

The wettest stretch is typically October–November at ~90–95 mm per month, while June is driest near 45 mm; plan outdoor-heavy days in June–July and reserve museum or spa time for late autumn.

Icy conditions are most likely December–March when temps hover around 31–34°F (-0.6 to 1.2°C); allow buffer time between activities and book flexible rates to absorb weather delays.

For San Francisco (SFO) to Reykjavik (REK), the best value appears 4–5 months out: 150–120 days run 15–18% cheaper than day-of (82–85 vs 100), so start alerts about five months before departure and be ready to buy by month four.

Prices rise steadily as departure nears: 90 days sits at 90, 60 days at 94, and 30 days at 97; to protect both price and seat choice, confirm tickets no later than 8–12 weeks out.

Inside 20 days, fares hover within 1.5–2% of day-of (98.5–99.5) and flexibility drops fast; unless a last-minute need forces it, avoid waiting into the final three weeks.

BusinessClass.com community travelers often lock lie-flat inventory 10–12 weeks ahead; at 75 days the price level is 92 versus 100 day-of, so finalize around the 2–3 month mark to balance cost and cabin availability.

From San Francisco (SFO) to Reykjavik (REK), summer price levels peak: July 124, August 120, and June 116, while winter lows are January 86 and February 84; shifting from July to April (95) can trim roughly 29 points off the peak—plan a spring trip to save.

Shoulder months balance value and daylight: May 101 and September 106 sit 18–23 points below July’s 124, so choosing these windows avoids peak premiums—target late May or mid-September for a better deal.

The spread between the cheapest month (February 84) and the priciest (July 124) is 40 points, meaning July is about 48% higher than February; picking March 88 or October 98 splits the difference—book shoulder weeks if your dates are flexible.

Year-end shows a mild holiday bump: December 92 vs November 90, both still below the annual average; for winter trips, aim for early December instead of late December to keep costs down.