If you are searching for the cheapest flight from Los Angeles International Airport (LAX) to San Francisco International Airport (SFO), you have landed on the right page. The Los Angeles–San Francisco air corridor is one of the most competitive domestic routes in the United States, which means fares are low, flights are frequent, and travellers have plenty of options to save money.

With over 1,337 flights per week connecting LAX and SFO, and one-way prices starting as low as $24, this 337-mile route offers remarkable value. Whether you are a business traveller, a weekend explorer, or a budget flyer, this complete guide covers everything — from the cheapest airlines and best booking strategies to the ideal days to fly and money-saving tips you cannot afford to miss.

LAX to SFO at a Glance

Cheapest Airlines: LAX to SFO Price Comparison (2026)

Multiple carriers compete for this route, which keeps fares low. Here is a detailed breakdown of every airline flying from Los Angeles International to San Francisco International, ranked from cheapest to most premium.

Pro Tip: Frontier and Spirit offer the lowest base fares but charge extra for carry-on bags. If you travel light with only a personal item, these are genuinely the cheapest options. For those who want bags included, Southwest remains the best value.

Best Time to Book Cheapest Flights LAX to SFO

How Far in Advance Should You Book?

Booking at the right time is the single most powerful way to secure the cheapest flight from Los Angeles International to San Francisco International. Based on flight data analysis:

•       Book 40–85 days in advance for the best combination of price and seat availability.

•       Fares typically rise sharply within two weeks of departure.

•       Last-minute deals do appear (Frontier sometimes drops to $29 for same-week travel), but availability is limited.

•       Booking on a Tuesday or Wednesday often yields lower prices, as airlines release sale fares early in the week.

Cheapest Months to Fly LAX to SFO

Cheapest Days to Fly from LAX to SFO

The day of the week you choose to fly can make a significant difference to the fare you pay on the cheapest flight from Los Angeles International to San Francisco International.

•       Tuesday — historically the cheapest day to fly. Airlines often release discounted fares Monday night, making Tuesday purchases and Tuesday departure flights less expensive.

•       Wednesday & Thursday — second-cheapest options, with Thursday saving up to 16% versus Sunday on average.

•       Monday — the busiest day with up to 151 flights, driven by business travellers. Fares can be competitive but seats fill quickly.

•       Saturday — fewest flights (only 66 on average) and often higher prices for leisure demand.

•       Sunday — historically the most expensive day to fly on this route due to peak leisure travel demand.

Key Insight: Flying Tuesday instead of Sunday can save you up to 16% on your LAX to SFO fare. On a $60 ticket, that's nearly $10 saved before you've even packed a bag.

Nonstop Flights from LAX to SFO: Everything You Need to Know

Flight Duration

The average nonstop flight time from Los Angeles International Airport to San Francisco International Airport is approximately 1 hour and 22 to 29 minutes. The straight-line distance between the two cities is 337 miles (543 km), making it one of the shortest viable commercial air routes in the country.

First and Last Flights of the Day

•       Earliest departure: Southwest Airlines at 5:20 AM from LAX

•       Latest departure: United Airlines at 11:05 PM from LAX

•       Both early morning and late-night flights tend to experience fewer delays.

Delay Statistics

Approximately 20% of weekly LAX to SFO flights experience delays, with an average delay of 116 minutes when delays do occur. To minimise your risk:

•       Fly in the morning or late at night — both have historically lower delay rates.

•       Avoid evening departures, which have the highest rate of delays.

•       Tuesday has the lowest delay rate of any day of the week on this route.

•       Sunday has the highest average delay rate on this route.

10 Proven Tips to Find the Cheapest Flight from LAX to SFO

Use these strategies to consistently book the lowest fares on the Los Angeles to San Francisco route:

1. Set a Fare Alert on Multiple Platforms

Use Google Flights, Skyscanner, and Kayak simultaneously to track price changes. When a flash sale drops Frontier to $24, you will be the first to know.

2. Be Flexible on Dates (±3 Days)

Using the 'flexible dates' feature on booking platforms can uncover significantly cheaper fares just a day or two away from your intended travel date.

3. Check All Nearby Los Angeles Airports

Hollywood Burbank (BUR), Long Beach (LGB), Ontario (ONT), and John Wayne/Santa Ana (SNA) sometimes offer lower base fares to Bay Area airports. Compare SNA to SFO or BUR to OAK fares too.

4. Consider Bay Area Alternative Airports

Oakland International (OAK) and San Jose International (SJC) are both about 30–60 minutes from San Francisco by BART or bus and often have cheaper fares.

5. Book 40–85 Days in Advance

This window consistently yields the best mix of seat availability and low fares for the LAX-SFO route.

6. Fly on a Tuesday or Thursday

Data shows Tuesday has the fewest delays and Thursday saves up to 16% versus Sunday — the most expensive day to fly.

7. Travel in May or June

These months offer the lowest average fares on this route, with prices sometimes dropping to $28 one-way on Frontier.

8. Join Airline Loyalty Programmes

Frequent this route? Southwest Rapid Rewards, United MileagePlus, and Alaska Mileage Plan all accrue miles quickly on this short hop. After just a few round-trips, you can earn a free flight.

9. Book Directly Through the Airline

For Frontier and Spirit, booking directly on the airline website often avoids third-party booking fees and can offer web-exclusive deals.

10. Pack Light to Avoid Bag Fees

Frontier and Spirit's low base fares come with strict bag policies. Flying with just a personal item (under the seat) keeps your total cost at the advertised price.

About the Airports

Los Angeles International Airport (LAX)

Los Angeles International Airport is the primary commercial airport serving the Greater Los Angeles Area in California, United States. It is the third-busiest airport in the country and one of the world's most significant aviation hubs, with over 67 airlines operating to 268 airports worldwide. LAX is located in Westchester, approximately 18 miles southwest of Downtown Los Angeles. For domestic flights, passengers should budget at least 90 minutes before departure for check-in and security screening.

•       IATA Code: LAX

•       Address: 1 World Way, Los Angeles, CA 90045

•       Terminals: 1–8, plus the Tom Bradley International Terminal (TBIT)

•       Domestic terminals primarily used: Terminals 1–7

•       Transport: FlyAway Bus, Metro C Line (Green), Uber/Lyft, Taxi

San Francisco International Airport (SFO)

San Francisco International Airport serves the San Francisco Bay Area and is the primary international gateway for Northern California. Located approximately 13 miles south of Downtown San Francisco, SFO is consistently ranked among the most connected airports on the West Coast. The airport is directly accessible via BART (Bay Area Rapid Transit), making it one of the few major US airports with a direct rail link to the city centre.

•       IATA Code: SFO

•       Address: San Francisco, CA 94128

•       Terminals: Terminal 1 (Harvey Milk), Terminal 2, Terminal 3, International Terminal

•       Transport: BART (direct to Downtown SF in ~30 mins), SamTrans Bus, Uber/Lyft, Taxi

Alternative Airport Options Near San Francisco

If you cannot find the cheapest flight from Los Angeles International to San Francisco International on your preferred dates, consider these Bay Area alternatives. All three are well-connected to San Francisco by public transport.