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$56 Cheap Flights to San Francisco International

Departing from

United States

Going to

San Francisco International

San Francisco (SFO)

United StatesMay, 2026

86% AI deal score

$268 $65

San Francisco (SFO)

United StatesApril, 2026

86% AI deal score

$290 $66

San Francisco (SFO)

United StatesApril, 2026

85% AI deal score

$268 $65

San Francisco (SFO)

United StatesMay, 2026

82% AI deal score

$248 $56

San Francisco (SFO)

United StatesApril, 2026

81% AI deal score

$183 $66

This is the lowest one-way flight price found by RatePunk users in the last 24 hours for a flight going to San Francisco International. Fares are subject to change and may not be available for all dates. (Data last updated 4/7/2026).

Get all best flight deals to San Francisco International
FlightsTo United StatesTo San Francisco

To San Francisco International

Popular airlines to San Francisco International

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American Airlines

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Alaska Airlines, Inc.

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JetBlue Airways

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Delta Air Lines

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Frontier Airlines

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Hawaiian Airlines

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Spirit Airlines

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United Airlines

684,061 searches in the past 7 days on RatePunk

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Top Cheap Flight Deals from United States to San Francisco International

Recent round-trip flight deals to San Francisco International

Wed, Jun 10 - Thu, Jun 11

Cheapest

San Francisco, United States
Frontier Airlines Logo
Phoenix (PHX) - San Francisco (SFO)

Frontier Airlines airlines • Direct

Frontier Airlines Logo
San Francisco (SFO) - Phoenix (PHX)

Frontier Airlines airlines • Direct

$125

$56

-$69

55%

Tue, Jun 9 - Wed, Jun 10

San Francisco, United States
Frontier Airlines Logo
Salt Lake City (SLC) - San Francisco (SFO)

Frontier Airlines airlines • Direct

Frontier Airlines Logo
San Francisco (SFO) - Salt Lake City (SLC)

Frontier Airlines airlines • Direct

$200

$56

-$144

72%

Tue, Jun 9 - Wed, Jun 10

San Francisco, United States
Frontier Airlines Logo
Phoenix (PHX) - San Francisco (SFO)

Frontier Airlines airlines • Direct

Frontier Airlines Logo
San Francisco (SFO) - Phoenix (PHX)

Frontier Airlines airlines • Direct

$125

$56

-$69

55%

Tue, Jun 2 - Wed, Jun 3

San Francisco, United States
Frontier Airlines Logo
Los Angeles (LAX) - San Francisco (SFO)

Frontier Airlines airlines • Direct

Frontier Airlines Logo
San Francisco (SFO) - Los Angeles (LAX)

Frontier Airlines airlines • Direct

$73

$56

-$17

23%

Tue, Jun 9 - Thu, Jun 11

San Francisco, United States
Frontier Airlines Logo
Phoenix (PHX) - San Francisco (SFO)

Frontier Airlines airlines • Direct

Frontier Airlines Logo
San Francisco (SFO) - Phoenix (PHX)

Frontier Airlines airlines • Direct

$125

$56

-$69

55%

Thu, May 7 - Sat, May 9

San Francisco, United States
Frontier Airlines Logo
Las Vegas (LAS) - San Francisco (SFO)

Frontier Airlines airlines • Direct

Frontier Airlines Logo
San Francisco (SFO) - Las Vegas (LAS)

Frontier Airlines airlines • Direct

$110

$56

-$54

49%

The cheapest time to fly to San Francisco International

Ready to jet to San Francisco International on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):

Phoenix > SFO: Jet away from Phoenix with fares as low as $28, a steal for a trip to remember!
Las Vegas > SFO: Vegas adventurers can discover incredible savings with flights starting at only $28.
Salt Lake City > SFO: Escape from Salt Lake City with these unbelievably low fares starting from $28.
Los Angeles > SFO: Fly away from Los Angeles to somewhere amazing with tickets starting at the low price of $28.
Denver > SFO: Take advantage of fares starting at $29 and fly away from Denver.
San Diego > SFO: San Diegans, enjoy huge savings and grab these flights starting at the low price of $28!

Facts About Flights from United States to San Francisco

To help you plan your journey, here are some quick San Francisco flight facts and tips.

San Francisco 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 International

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.

Typical price range (round-trip)

$150 - $600

Generally, flights to the City by the Bay range from $150 to $600. Prices often surge during peak seasons like summer and around major holidays, when everyone wants a piece of that Golden Gate view. Keep an eye on shoulder seasons for better deals!

Flight frequency

2,000+ flights

Flights to the Golden Gate City are very frequent, with departures happening almost every hour! Expect even more options during peak tourist seasons and popular travel times like holidays and weekends.

SFO Airport Deal Stats

Current most discounted routes

Avg. most discounted routes (last 3 months)

SFO airport insights

Best days to catch a deal

Wed, Tue

Based on the provided data, Saturday is the best day to find flight deals from San Francisco International Airport. You may also find deals on Sunday and Thursday, as they have the next lowest counts.

Avg. deal survival time

13.4 hours

Deals from San Francisco International airport survive for 13.4 hours on average. Make sure to book quickly, as these deals don't last very long!

Rare deal frequency

13 deals

We uncovered 13 rare flight deals for San Francisco International Airport in the last month, thanks to our advanced AI. These rare finds earned an AI Deal Score of 90+, typically indicating mistake fares, special promotions, or ultra-discounts.

Average price drop

-66%

The average price drop for flights to San Francisco International Airport is a significant 66.4%. This substantial decrease indicates a high potential for finding discounted fares when flying to this destination.

Next 4 weeks: deal forecast

San Francisco Flight Forecast

Based on current trends, flights to San Francisco International are expected to remain stable next month. There are no significant price drops or increases anticipated.

Top 5 biggest price drops (last 3 months)

Found on March 27

Mexico City - SFO

$1,115 $206

82%

Found on March 30

Bora Bora - SFO

$2,150 $418

81%

Found on March 30

Santorini - SFO

$2,750 $526

81%

Found on March 26

Jakarta - SFO

$2,950 $642

78%

Found on March 28

Lemnos - SFO

$1,850 $410

78%

Check these nearby airports too

Looking for more options? These airports near SFO sometimes drop rare deals too:

Oakland International (OAK)

~9 rare deals/month

San Jose International (SJC)

~8 rare deals/month

Charles M. Schulz–Sonoma County (STS)

~4 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 from United States to San Francisco International

Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to San Francisco International:

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!

Seasonal considerations

Distinct

Seasonal considerations

San Francisco experiences distinct seasonal travel patterns. Summer is peak season with higher prices due to favorable weather and numerous events. Traveling during the shoulder seasons (spring and fall) can offer a sweet spot with pleasant weather and lower costs, while winter sees the fewest crowds and the best deals, albeit with cooler temperatures and occasional rain.

TL;DR: January is the cheapest month to fly to San Francisco. Tuesdays are the best days to book, while Wednesdays are the cheapest days to fly. Aim to book about two months in advance for the best deals. San Francisco has distinct seasonal travel patterns, with summer being the most expensive and winter the least.

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!

Tip: Check out the local breweries and eateries in Oakland before heading to the airport for a true taste of the East Bay!

San Jose International Airport (SJC)

San Jose International Airport (SJC) is located further south in the heart of Silicon Valley. SJC offers a modern and efficient travel experience, with a focus on technology and innovation. The airport is well-connected to the region's major highways and public transportation, including Caltrain and VTA light rail. While it's a bit further from San Francisco, SJC can be a good option if you're visiting the South Bay or prefer a less crowded airport. You can reach San Francisco by taking Caltrain, although the ride will be around 1.5 - 2 hours.

Tip: If you're heading to Silicon Valley, SJC is your best bet for a smooth landing!

Other airports

San Francisco is a popular destination, and sometimes the best flight deals land at nearby airports! Oakland International Airport (OAK) and San Jose International Airport (SJC) are great alternatives, but remember to factor in the trek to the city. Both offer public transportation and ride-sharing options, but expect a longer travel time compared to flying directly into SFO.

Airport transfers

San Francisco International Airport (SFO) offers a variety of transportation choices to whisk you into the city! From the speedy BART train to ride-sharing services and traditional taxis, you'll find an option that fits your budget and travel style. Don't forget about pre-booked shuttles for a convenient and comfortable ride.

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 icon

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 icon

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 icon

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 icon

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 icon

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.

No matter your interest – be it art, food, nightlife, or nature – San Francisco has something for everyone. And the best part? Many events and attractions refresh throughout the year, so there’s always something new to experience each visit.

Events in San Francisco This Month

Event photo

thursday - full city devolucion

Secure your tickets now for an upcoming event at August Hall in San Francisco on April 12, 2026, at 7:30 PM.

Event photo

san francisco: city cruises — ronnie's awesome list

Celebrate Easter with a delightful dining experience and festive entertainment on our special San Francisco Easter Dinner Cruise. Enjoy the beautiful spring scenery while creating lasting memories with family and friends.

Event photo

the city eats monthly feed - san francisco | april 2026

Volunteer with us at our monthly community feed to help prepare and serve warm meals to those in need in our community.

Event photo

rich amiri - grit & grace world tour

Get your tickets now to see Rich Amiri live at August Hall in San Francisco on April 2, 2026, at 8:00 PM.

Event photo

the city eats monthly feed - san francisco — the city eats

Join our monthly City Eats event, where volunteers collaborate to prepare, package, and distribute hot meals to members of our community.

San Francisco Weather

Weather in San Francisco

Tue, Mar 31

35%

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17°  13°

35%

Wed, Apr 1

25%

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15°  10°

25%

Thu, Apr 2

0%

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14°  10°

0%

Fri, Apr 3

0%

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19°  10°

0%

Sat, Apr 4

0%

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22°  11°

0%

Sun, Apr 5

10%

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20°  11°

10%

Mon, Apr 6

10%

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16°  11°

10%

Here’s a quick look at the weather you can expect, plus this week’s forecast:

🌤️

Seasons: San Francisco experiences mild, wet winters (December-February) with temperatures averaging 8-14°C (46-57°F), followed by dry, cool summers (June-August) with temperatures around 13-22°C (55-72°F). Spring (March-May) and autumn (September-November) offer transitional weather with moderate temperatures and occasional rainfall.

🌧️

Rain: San Francisco experiences most of its precipitation during the winter months, primarily as rain. While rainfall can occasionally cause minor travel delays, it's generally not impactful enough to severely disrupt travel plans.

🌡️

This week's forecast: This week in San Francisco, expect a mix of sunny and partly cloudy days with temperatures ranging from 13.8°C to 22.1°C (56.84°F to 71.78°F). There is a moderate chance of rain on Tuesday and Wednesday, but the rest of the week looks relatively dry.

(We update the weather forecast weekly so you know what to expect during your travel week. Always check a day or two before your flight for the most current conditions.)

Frequently Asked Questions About Flights to San Francisco International

Well, buckle up, buttercup, because flight prices to San Francisco can be more variable than the city's famous fog! Typically, you might find round-trip tickets ranging from $200 to $600 for domestic flights if you book in advance and travel during the off-peak seasons. However, during peak travel times like summer or holidays, prices can skyrocket to $800 or even beyond. International flights can vary wildly depending on where you're flying from, so keep your eyes peeled and your options open!

Ah, the quest for cheap flights! Start by being flexible with your travel dates; mid-week flights (Tuesday, Wednesday) are often cheaper than weekend flights. Booking 2-3 months in advance can also unlock better rates. Set up fare alerts on flight comparison websites like RatePunk Flights Search to track price changes and pounce when prices drop. Consider flying into alternative airports, such as Oakland (OAK) or San Jose (SJC), as they might offer more budget-friendly options. Lastly, don't forget to clear your browser's cookies or use incognito mode, as some sites might increase prices based on your search history.

If you're chasing those sweet, sweet savings, aim for the shoulder seasons – spring (April-May) and fall (September-October). During these months, the weather is still pleasant, but the tourist crowds have thinned out, which typically translates to lower airfares and hotel rates. Avoid flying during major holidays and summer if you can, as prices tend to surge due to increased demand. Plus, San Francisco in the spring and fall? You might just find it’s the most charming time to visit.

(Have more questions?) Feel free to reach out or check our comprehensive San Francisco International travel guide. We’re here to help make your flight to San Francisco International (and the trip itself) as smooth as possible.

Pro Tips for Finding Cheap Flights to San Francisco International

Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on San Francisco International 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!

Consider Alternative Airports: San Francisco has multiple airports nearby (like Oakland or San Jose). Check flights into these alternative airports as they might offer significantly cheaper fares than flying directly into SFO. A little extra travel time could save you a lot of money!

Set Up Price Alerts: Use RatePunk to set up price alerts for your desired flights. You'll receive notifications when the price drops, ensuring you never miss out on a sweet deal. It's like having a personal flight-deal-finding fairy godparent!

Fly During Off-Peak Seasons: Avoid traveling during peak tourist seasons like summer or major holidays. You'll find fewer crowds and, more importantly, significantly cheaper flights. Shoulder seasons (spring and fall) are your best bet for balancing good weather and lower prices.

Book in Advance (But Not Too Early!): While last-minute deals are rare, booking too far in advance isn't always the best strategy either. Aim to book your flights about 2-3 months before your travel date for the best chance of securing a good price. It's a bit of a sweet spot!

Consider Budget Airlines: Budget airlines can offer incredibly cheap flights, but be sure to factor in extra costs for baggage, seat selection, and snacks. If you're traveling light and don't mind a no-frills experience, this can be a fantastic way to save money.

Use Incognito Mode: Airlines and travel sites sometimes track your browsing history and may increase prices based on your previous searches. Use incognito mode or clear your browser's cookies to see if you can find lower prices. It's like sneaking past the price-gouging goblins!

Check for Package Deals: Sometimes, bundling your flight with a hotel or car rental can result in significant savings. Explore package deals to see if you can snag a better overall price for your trip. It's like getting a bonus discount for being a savvy traveler!

Redeem Miles and Points: If you have airline miles or credit card points, now's the time to use them! Redeeming your rewards can drastically reduce the cost of your flight, potentially even making it free. It's like turning your travel loyalty into cold, hard cash savings!

Follow Social Media for Flash Sales: Many airlines and travel companies announce flash sales and special deals on their social media channels. Follow them on platforms like Twitter and Facebook to stay informed and jump on limited-time offers. It's like having insider access to travel treasure!

By keeping these tips in mind, you’ll be well-equipped to find the cheapest flights to San Francisco International and make the most of your travel budget. After all, the more you save on your flight, the more you can spend on a Broadway show, a nice meal, or an extra tour in San Francisco International! 🎉✈️

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