$25 Cheap Flights to San Francisco
One-way
Departing from
United States
Going to
San Francisco, United States
San Francisco (SFO)
United States • December, 2025
78% AI deal score
$240 $27
San Francisco (SFO)
United States • December, 2025
77% AI deal score
$240 $31
San Francisco (SFO)
United States • December, 2025
76% AI deal score
$200 $25
San Francisco (SFO)
United States • December, 2025
76% AI deal score
$143 $31
Top Cheap Flight Deals to San Francisco
Recent round-trip flight deals to San Francisco
Wed, Feb 11 - Fri, Feb 13
Cheapest
Denver (DEN) - San Francisco (SFO)
Frontier Airlines airlines • Direct
San Francisco (SFO) - Denver (DEN)
Frontier Airlines airlines • Direct
$108
$51
-$57
53%
Mon, Feb 9 - Fri, Feb 13
Denver (DEN) - San Francisco (SFO)
Frontier Airlines airlines • Direct
San Francisco (SFO) - Denver (DEN)
Frontier Airlines airlines • Direct
$108
$51
-$57
53%
Tue, Feb 10 - Fri, Feb 13
Denver (DEN) - San Francisco (SFO)
Frontier Airlines airlines • Direct
San Francisco (SFO) - Denver (DEN)
Frontier Airlines airlines • Direct
$108
$51
-$57
53%
Sun, Feb 8 - Fri, Feb 13
Denver (DEN) - San Francisco (SFO)
Frontier Airlines airlines • Direct
San Francisco (SFO) - Denver (DEN)
Frontier Airlines airlines • Direct
$108
$51
-$57
53%
Fri, Feb 13 - Thu, Feb 19
Phoenix (PHX) - San Francisco (SFO)
Frontier Airlines airlines • Direct
San Francisco (SFO) - Phoenix (PHX)
Frontier Airlines airlines • Direct
$115
$51
-$64
56%
Fri, Feb 13 - Fri, Feb 20
Phoenix (PHX) - San Francisco (SFO)
Frontier Airlines airlines • Direct
San Francisco (SFO) - Phoenix (PHX)
Frontier Airlines airlines • Direct
$115
$51
-$64
56%
The cheapest time to fly to San Francisco
Ready to jet to San Francisco on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):
Facts About Flights to San Francisco
To help you plan your journey, here are some quick San Francisco flight facts and tips.
San Francisco city airports
San Francisco is served by several airports, but the primary gateway is San Francisco International Airport (SFO). Located about 13 miles south of downtown San Francisco, SFO is a major international airport with flights to destinations around the world. It's a hub for United Airlines and Alaska Airlines and offers a wide variety of domestic and international flights. SFO is known for its modern facilities, including numerous dining and shopping options, art exhibits, and even a yoga room. The airport is easily accessible by car, public transportation (BART), and ride-sharing services.
Pro tip: search “San Francisco (Any)” to see fares to all San Francisco airports – sometimes one is cheaper than the others on your dates.
Insights for flights to San Francisco
Cheapest airport
Oakland (OAK)
Oakland International Airport (OAK) is your savvy traveler's gateway to the Bay Area! Just across the bay from San Francisco, OAK boasts easy access to the city via BART, avoiding the often higher fares and congestion of SFO. Plus, you might just find some sweet deals flying in and out of this underrated gem!
Nonstop vs. 1-stop
100+ cities
San Francisco International Airport (SFO) is a major hub connecting over 100 cities; popular routes include those to Asia, Australia, and other major US cities!
Number of airlines
50+ airlines
San Francisco International Airport (SFO) is a major hub served by over 50 airlines! Among the most popular are United, Alaska, Delta, Southwest, and JetBlue, offering both full-service and budget-friendly options to whisk you away.
SFO Airport Deal Stats
Current most discounted routes
Avg. most discounted routes (last 3 months)
SFO airport insights
Best days to catch a deal
Mon, Wed
Based on the provided data, Saturday and Thursday are the days when the cheapest flight deals to San Francisco International Airport were most frequently found. You're more likely to snag a bargain if you search for flights on those days.
Avg. deal survival time
11.9 hours
Deals from San Francisco International Airport last around 11.9 hours on average. Be sure to book quickly if you find a deal you like, as it may not last long.
Rare deal frequency
10 deals
We've discovered 10 rare deals for flights departing from San Francisco International Airport in the last month. These rare finds, identified with an AI Deal Score of 90 or higher, typically include mistake fares, special promotions, or ultra-discounted offers.
Average price drop
-75%
The average price drop for flights arriving at San Francisco International Airport is 74.6%. This means that travelers can potentially save a significant amount on flights to SFO by monitoring price fluctuations.
Next 4 weeks: deal forecast
San Francisco Flight Forecast (December 2025)
Based on current data, flight prices to San Francisco International Airport are expected to remain relatively stable next month. There are no major price drops or increases anticipated at this time.
Top 5 biggest price drops (last 3 months)
Found on November 17
Islip - SFO
$1,040 → $88
92%
Found on November 16
Kamloops - SFO
$1,320 → $243
82%
Found on November 19
Bora Bora - SFO
$2,325 → $425
82%
Found on November 19
Fort St. John - SFO
$698 → $126
82%
Found on November 18
Liverpool - SFO
$2,735 → $531
81%
Check these nearby airports too
Looking for more options? These airports near SFO sometimes drop rare deals too:
Oakland International (OAK)
~6 rare deals/month
San Jose International (SJC)
~11 rare deals/month
Charles M. Schulz–Sonoma County (STS)
~5 rare deals/month
If you’re flexible with departure cities, it’s worth keeping an eye on nearby airports — especially OAK and SJC for long-haul deal surprises.
When Is the Best Time to Fly to San Francisco
Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to San Francisco:
Cheapest month
January
Cheapest month
January is typically the cheapest month to fly to San Francisco. You'll find fewer tourists, lower hotel rates, and potentially great deals on flights. While it might be cooler and rainier, the city's indoor attractions, cozy cafes, and vibrant cultural scene make it a worthwhile destination.
Best day to book
Tuesday
Best day to book
Booking flights on Tuesdays often yields the best deals. Airlines frequently release new fares and run promotions early in the week, making Tuesday the prime time to snag a bargain. Beat the crowds and set those flight alerts for a wallet-friendly trip!
Cheapest days to fly
Wednesday
Cheapest days to fly
Flying on Wednesdays can save you some serious dough. Mid-week flights are generally less in demand than weekend departures, resulting in lower fares. Take advantage of the lighter travel schedules and enjoy a less crowded airport experience.
Advance booking sweet spot
2 Months
Advance booking sweet spot
The sweet spot for booking flights to San Francisco is about two months in advance. This timeframe allows you to capitalize on the balance between airline pricing algorithms and demand. Secure your spot and unlock potential savings by planning ahead!
San Francisco Airports & Ground Transportation
One big question for travelers is which San Francisco airport to fly into. Here’s a quick guide to San Francisco’s airports and how to get to the city from each:
San Francisco International Airport (SFO)
San Francisco International Airport (SFO) is the largest airport in the Bay Area and a major gateway to Asia and Europe. SFO is located about 13 miles south of downtown San Francisco and is easily accessible by car, taxi, or public transportation. The airport boasts a wide array of amenities, including a diverse selection of restaurants, shops, and art exhibits. Getting to downtown San Francisco is a breeze via BART (Bay Area Rapid Transit), which offers direct service from the airport to several stations in the city. Alternatively, you can hop on a taxi or rideshare for a convenient door-to-door experience.
Tip: Consider using BART to get to downtown, it's often the most cost-effective and efficient option!
Oakland International Airport (OAK)
Oakland International Airport (OAK) is a smaller, more convenient alternative to SFO, located just across the bay. OAK offers a more relaxed atmosphere and shorter security lines, making it a favorite for some travelers. The airport has a decent selection of restaurants and shops, and it's also a hub for several low-cost carriers. Getting to San Francisco from OAK is relatively easy, with options including BART (transfer required), the Oakland Airport Connector, and various shuttle and taxi services. Plus, you might just catch a stunning view of the San Francisco skyline as you take off or land!
What to Do in San Francisco
San Francisco isn’t just about getting there – it’s about enjoying the country once you arrive! Here are some top things to do in San Francisco, organized by interest:
Sightseeing & Landmarks
San Francisco is a city brimming with iconic sights! From the Golden Gate Bridge to Alcatraz Island and the winding Lombard Street, you'll find photo opportunities at every turn. Don't forget to hop on a cable car for a truly classic experience.
Arts & Culture
Immerse yourself in San Francisco's vibrant arts scene! Explore world-class museums like the San Francisco Museum of Modern Art (SFMOMA) or the de Young Museum. Catch a show in the Theater District, or wander through the colorful murals of the Mission District.
Food & Nightlife
Prepare your taste buds for a culinary adventure in San Francisco! From fresh seafood at Fisherman's Wharf to Michelin-starred restaurants and bustling bars in North Beach, the city offers a diverse range of dining and nightlife experiences. Be sure to grab a sourdough bread bowl!
Shopping & Fashion
Shopaholics, rejoice! San Francisco is a shopper's paradise. Explore upscale boutiques in Union Square, discover unique finds in Haight-Ashbury, or browse the Ferry Building Marketplace for local artisanal goods. You're sure to find something special to take home.
Nearby Getaways
Escape the city for a day trip to explore the stunning natural beauty surrounding San Francisco! Head north to the majestic redwood forests of Muir Woods, or south to the charming coastal town of Monterey and the world-famous Monterey Bay Aquarium. Wine lovers can venture to Napa Valley or Sonoma for a taste of California's renowned wines.
Events in San Francisco This Month
sf coffee fest 2025
The 9th Annual San Francisco Coffee Festival is an immersive experience taking place on November 8th and 9th, 2025. Attendees can sample and enjoy a variety of coffee from the best local roasters and vendors.
don't tell kate
Experience the vibrant Music City event in the Bay Area, a live music festival featuring entertainment across six stages. Guests can enjoy a diverse range of performances all happening simultaneously.
griz @ cow palace
Tickets are available for GRiZ with Levity and Lumasi at the Cow Palace in Daly City on November 8th, 2025, at 7:00 PM. Get ready for an amazing night of music and dancing.
dance fridays
Experience Epic Dance Fridays, San Francisco's premier Salsa, Bachata, and Zouk club! Enjoy multiple dance floors and beginner-friendly dance lessons for all skill levels. Come and dance the night away!
San Francisco Weather
Weather in San Francisco
Wed, Nov 19
25%
14° 11°
25%
Thu, Nov 20
Frequently Asked Questions About Flights to San Francisco
Pro Tips for Finding Cheap Flights to San Francisco
Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on San Francisco flights:
Be Flexible with Your Dates: If your travel dates are flexible, you can often find cheaper flights. Try searching for flights a few days before or after your preferred dates to see if you can snag a better deal. Sometimes, flying on a Tuesday or Wednesday is cheaper than flying on a Friday or Sunday!
