Looking to explore the stunning sights of San Francisco without breaking the bank? Finding the cheapest time to fly to San Francisco can make all the difference in your travel budget. With its iconic Golden Gate Bridge, vibrant neighborhoods, and world-class dining, planning your trip around the best airfare can help you enjoy more of what this beautiful city offers.
Factors like seasonal demand, holidays, and local events significantly influence flight prices to San Francisco. In this article, we’ll explore the cheapest time to fly to San Francisco, the best months to book your flight tickets and tips on snagging the best deals to ensure your adventure is memorable and affordable.
Cheapest Time to Book Flights to San Francisco in 2026
There are two main factors to consider to find the cheapest time to book flights to San Francisco:
Time of year: Generally, the cheapest time to fly to San Francisco is during the off-season, from fall (September to November) to winter (December to February). There are fewer crowds during this time, and hotel rates are also lower. However, remember that the weather can be more relaxed and wetter during these months.
Time of booking: According to studies, the cheapest time to book a flight to San Francisco is typically between 1 and 2 months (40 to 60 days) before your departure date. Some resources even say it can be as far out as 124-197 days beforehand, but this isn’t as common. Booking too far in advance or too late can lead to higher prices.
Cheapest Airlines that Fly to San Francisco with Average Prices
Here are some of the cheapest airlines that fly into San Francisco International Airport (SFO) and Oakland International Airport (OAK), along with their average prices based on searches conducted in June 2026:
- Frontier Airlines: Known for its budget-friendly fares, Frontier is an excellent option for travelers looking for a cheap flight to San Francisco. Average price range: $100 – $300 (round trip)
- Spirit Airlines: Another budget airline, Spirit offers competitive fares on flights to San Francisco. However, be aware that Spirit charges extra fees for many things included in the base fare on other airlines, such as checked bags and seat selection. Average price range: $80 – $250 (round trip)
- Southwest Airlines: Southwest is known for its two free checked bags and transparent pricing model, which means you won’t be surprised by hidden fees at checkout. Average price range: $150 – $400 (round trip)
- JetBlue Airways: While not always the absolute cheapest, JetBlue offers a good balance between price and amenities, with features like comfortable seating and free Wi-Fi on some flights. Average price range: $180 – $450 (round trip)
- Sun Country Airlines: This budget-friendly airline mainly focuses on seasonal and leisure routes, so it can be a good option if you are flexible with your travel dates. Average price range: $120 – $350 (round trip)
- Great Lakes Airlines: This regional carrier offers flights to smaller airports near San Francisco, such as Concord (CCR). Great Lakes can be a good option if you fly from a smaller airport. Average price range: $150 – $400 (round trip)
- Alaska Airlines: Alaska Airlines offers competitive fares on flights to San Francisco, especially from the Pacific Northwest and Alaska. Average price range: $200 – $500 (round trip)
- United Airlines: United is a major airline that offers a variety of routes to San Francisco. While not always the cheapest option, United can be a good choice if you want a more traditional airline experience. Average price range: $250 – $600 (round trip)
Pros & Cons of Flying to San Francisco During the Cheapest Time
Pros of Flying to San Francisco During the Cheapest Time
- Lower fares: This is the most significant advantage of the cheapest time to fly to San Francisco. Flights and accommodation will be significantly cheaper during the off-season (fall and winter).
- Fewer crowds: Popular tourist attractions won’t be as packed, making getting around and enjoying sights easier without feeling overwhelmed.
- Unique experiences: You might encounter events or activities specific to the off-season, like enjoying holiday decorations in winter or experiencing the city during foggy mornings in summer (which can be quite beautiful).
Cons of Flying to San Francisco During the Cheapest Time
- Weather: San Francisco’s weather is mild year-round, but the off-season can be wetter and more relaxed. Rainfall is more likely in winter, and temperatures can be pretty chilly, especially compared to peak tourist season (spring and summer).
- Limited daylight: Winter days are shorter, so you’ll have less time for outdoor activities.
- Potential closures: Some attractions or tours might have limited hours or be closed during the off-season.
Additional Tips for Finding Cheap Flights to San Francisco
- Be flexible with your travel dates and times. You will likely find a cheaper flight if you are flexible with your travel dates.
- Consider flying into a smaller airport. There are two main airports in San Francisco: San Francisco International Airport (SFO) and Oakland International Airport (OAK). OAK is generally less expensive to fly into than SFO.expand_more
- Sign up for email alerts from airlines and travel websites like Kiwi. This way, you will be notified when there are sales or fare drops on flights to San Francisco.
- Consider using a flight aggregator website or app. Flight aggregator websites and apps can help you compare prices from airlines and travel websites.expand_more Some popular flight aggregator websites and apps include Google Flights, Kayak, and Skyscanner.
In conclusion, we hope this article has equipped you with essential insights for identifying the cheapest time to book flights to San Francisco.
If you have any questions or wish to share your travel tips and experiences, leave a comment below! We’d love to hear from you and help make your San Francisco adventure more memorable.
