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$19 Cheap Flights to Foster City, CA

View $19 flight on Sat, Nov 14, 2026Opens in a new window

Popular airlines to Foster City

How much is the cheapest flight to Foster City?

Prices were available within the past 7 days and start at $19 for one-way flights and $38 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Alaska Airlines
Southwest Airlines
American Airlines
United

What you need to know for your flight to Foster City

Flights to Foster City at a glance

Traveling to Foster City is easy; you can select from a range of full-service or affordable San Mateo flights. Compare flight schedules and journey times to find cheap flights to Foster City that fit your budget and plans to explore the city's renowned attractions and neighborhoods.

  • Major airports near Foster City: San Francisco International Airport (SFO), Oakland International Airport (OAK)
  • Closest (typical) airport to Foster City: San Francisco International Airport, SFO (around 8 miles)
  • Flights per week: 8,600+ flights arriving across Foster City airports
  • Number of airlines that fly to Foster City: around 85+ carriers

Popular airports near Foster City

Foster City is a charming destination perfect for family getaways, outdoor activities, and urban exploration. Visitors are drawn to this city for its business opportunities, cultural attractions, family-friendly atmosphere, and entertainment options. Conveniently, Foster City is accessible via two major airports, including San Francisco International Airport.

  • San Francisco International Airport (SFO): Situated in San Mateo County, California, approximately 8 miles from Foster City, this airport provides both domestic and international flights, linking to over 240 domestic cities and around 340 international locations. Passengers have the option to enhance their travel experience by upgrading to first class, business class, or premium economy class seating, depending on the specific routes and airlines. Key airlines operating here include United, Alaska Airlines, and Delta.
  • Oakland International Airport (OAK): Found in Alameda County, California, about 11 miles from Foster City, this airport caters to both domestic and international travel, connecting around 100 domestic cities and 20+ international destinations. Travelers can elevate their journey by opting for premium economy, first class, or business class seating based on their chosen routes and airlines. Notable carriers at this airport include Southwest Airlines, Alaska Airlines, and Volaris.

Top routes to Foster City

  • Los Angeles (LAX) to Foster City (SFO/OAK), with one-way tickets available from around $45
  • New York (JFK/LGA) to Foster City (SFO/OAK), with one-way flight options from around $100
  • San Diego (SAN) to Foster City (SFO/OAK), with one-way airfare from around $30
  • Las Vegas (LAS) to Foster City (SFO/OAK), with one-way airfare from around $40
  • Seattle (SEA) to Foster City (SFO/OAK), with one-way tickets available from around $60

Cheapest routes to Foster City

  • San Diego (SAN) to Foster City (SFO/OAK), with affordable one-way prices from around $30
  • Orange County (SNA) to Foster City (SFO/OAK), with low-cost one-way tickets from around $30
  • Burbank (BUR) to Foster City (SFO/OAK), with affordable one-way prices from around $30
  • Ontario (ONT) to Foster City (SFO/OAK), with affordable one-way prices from around $30
  • Palm Springs (PSP) to Foster City (SFO/OAK), with budget one-way fares from around $30

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to Foster City

  • United: This airline operates flights to both San Francisco International Airport (SFO) and Oakland International Airport (OAK), making up about 28% of arrivals in Foster City. The average fare for a one-way ticket is around $1020, with premium service options such as premium economy, business, and first class available based on the route.
  • American Airlines: Offering flights to San Francisco International Airport (SFO), American Airlines represents roughly 13% of the arrivals to Foster City. The average one-way fare is about $410, with premium service options that may include premium economy, business, and first class depending on the specific route.
  • Southwest Airlines: Providing services to San Francisco International Airport (SFO) and Oakland International Airport (OAK), Southwest Airlines accounts for approximately 13% of Foster City's arrivals. Passengers can expect an average one-way fare of around $240.
  • Delta: Delta operates flights to both San Francisco International Airport (SFO) and Oakland International Airport (OAK), contributing to about 12% of arrivals in Foster City. The typical fare for a one-way ticket is around $320, with options for premium service including premium economy, business, and first class depending on the route.
  • Alaska Airlines: This airline serves both San Francisco International Airport (SFO) and Oakland International Airport (OAK), accounting for about 10% of arrivals to Foster City. The average one-way fare is approximately $250, with premium service options that may include business class and first class based on the route.

Best time to fly to Foster City

The most popular months for travelers to fly to Foster City are January, March, and April, when peak temperatures in Foster City can reach up to 55.9°F in April. If you prefer quieter travel, consider September, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 65.3°F. For better deals, May usually offers the lowest average one-way fare around $240, roughly 11% cheaper than the yearly average. Looking for additional cheaper months to fly? September, October, and February offer average one-way fares roughly ranging from $245 to $260, making them good options for flexible travelers.

calendar iconMonthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinesscrowd level iconDemandprice iconAverage one-way Fare
January52.3°F (11.3°C)Light RainMostly SunnyModerately High$359
February52.9°F (11.6°C)Light RainMostly SunnyAverage$260
March54.0°F (12.2°C)Light RainMostly SunnyModerately High$272
April55.9°F (13.3°C)No Rain (Dry)Mostly SunnyModerately High$279
May58.1°F (14.5°C)No Rain (Dry)SunnyAverage$240
June62.2°F (16.8°C)No Rain (Dry)SunnyAverage$262
July64.0°F (17.8°C)No Rain (Dry)SunnyAverage$279
August65.1°F (18.4°C)No Rain (Dry)SunnyAverage$267
September65.3°F (18.5°C)No Rain (Dry)SunnyModerately Low$245
October62.6°F (17.0°C)No Rain (Dry)SunnyModerately Low$249
November56.7°F (13.7°C)Light RainSunnyModerately Low$263
December52.3°F (11.3°C)Light RainMostly SunnyAverage$289

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to save money on a flight to Foster City

Getting some of the best deals on flights to Foster City is all about timing and flexibility. Here are some key tips to help you save:

  1. Compare flight options—use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  2. Set up price alerts—as an Expedia member you can use Price Tracking to receive notifications when flight prices change.
  3. Bundle and save—book a flight and unlock a hotel deal on Expedia*, or explore our Foster City hotel and flight deals.
  4. Think about luggage-nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your baggage allowance before confirming your booking to avoid excess baggage fees at the airport.
  5. Earn miles—you can earn airline miles when you book your Foster City flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Foster City

Foster City welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach Foster City efficiently:

  • Public transportation: From San Francisco International Airport, San Francisco Intl. Airport Station, a metro station, is located about 0.2 miles away on foot, while San Bruno Station, a train station, is approximately 2.4 miles from the airport and best reached by car.
  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Foster City, with options including free hotel shuttles and private rides, which can be arranged in advance.
  • Car rental: Renting a car in Foster City is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Foster City on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Where to stay in and around Foster City

  • San Francisco: A vibrant metropolis, Foster City is situated in San Francisco, a city renowned for its dynamic blend of family-friendly activities, outdoor adventures, and urban experiences. Visitors can indulge in shopping at the bustling mall centers or explore educational venues. Key landmarks include the iconic Golden Gate Bridge, the lively Pier 39, and the expansive Golden Gate Park, perfect for families and outdoor enthusiasts. San Francisco offers an unforgettable city vacation, with a multitude of attractions waiting to be discovered.
  • Redwood City: Located 5 miles drive away from Foster City, Redwood City is a charming destination that invites travelers to explore its outdoor spaces, cultural highlights, and family-friendly venues. Education and the arts thrive here, with attractions like the historic Stanford University and the elegant Filoli estate. Whether you’re looking to enjoy a day at the beach or attend events at the San Mateo County Event Center, Redwood City provides a delightful experience for visitors seeking culture and recreation.
  • Menlo Park: Menlo Park is located 9 miles drive away from Foster City and is an excellent spot for those interested in culture, family activities, and business opportunities. The city features educational institutions and shopping centers, ensuring a diverse experience. Notable attractions include the prestigious Stanford University and the fascinating Computer History Museum. With its picturesque valley and artistic venues like the Allied Arts Guild, Menlo Park is a great base for travelers looking to explore the surrounding Bay Area.

Tips for short-haul flights to Foster City

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

  • Pack light and skip checked bags—with budget airlines, traveling with just a carry-on is often more economical. Save space by opting for mini toiletries, wearing your bulkiest clothing, and planning outfits thoughtfully. This approach also helps you avoid the wait at baggage claim upon arrival.
  • Bring your own entertainment—many short-haul flights may lack in-flight entertainment options. To keep yourself entertained, download TV shows, movies, music, or podcasts ahead of time, and consider bringing a book. Remember to fully charge your devices before boarding.
  • Arrive at the airport in plenty of time—even for short or domestic flights, it's wise to arrive at least 1.5 to 2 hours before departure, taking into account traffic and security lines.
  • Bring your own snacks and water—pack some snacks and a refillable water bottle to stay hydrated and save money at the airport.

Tips for long-haul flights to Foster City

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

  • Select your seat in advance—for longer flights, choosing your seat is essential for comfort. Full-service airlines often allow free seat selection once online check-in begins, typically 24–48 hours before your flight. Some airlines may provide the option to select seats even earlier.
  • Arrive at the airport in plenty of time—make sure to arrive at least 3 hours prior to departure for international flights to account for check-in, security, and immigration procedures.
  • Relax at the airport—if you have some extra time, explore the shops, grab a coffee, or unwind at the gate or in a departure lounge if you have access. Most airports offer free Wi-Fi for your convenience.
  • Adjust to the new time zone mid-flight—begin to sync your body clock by changing your watch and sleep schedule to reflect your destination's time zone. Aim to sleep or remain awake during the flight according to the local time of your arrival to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to Foster City?
November is the cheapest month to fly to Foster City. Demand is lower then, so fares are usually more affordable. Booking your trip outside of public and school holidays can also help you save.
Which US cities have the cheapest flights to Foster City?
Score cheap flights to Foster City from Los Angeles, San Diego and New York. These cities typically offer the best fares to this top destination. But bear in mind that stopovers, holiday periods and demand will also impact rates, so stay flexible and book when you see a bargain.
Which US cities fly direct to Foster City?
Choose from 64 US destinations that have direct flights to Foster City. When reserving on Expedia, click on the "Direct flights only" box to compare nonstop routes. Fly to Foster City from any of these cities:
  • Los Angeles
  • San Diego
  • New York
  • Seattle
  • Las Vegas
How to find a cheap flight to Foster City?
Book early or look for a cheap flight to Foster City during off-peak months like February and March. Leaving on a Thursday could also save you an average of 16% compared to a Sunday flight.* The Expedia app makes it even easier to know when to book. Just turn on the toggle for "Watch prices" and get notified when there's a better deal.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Foster City?
While booking in advance is usually the easiest way to save money, don't panic if your Foster City getaway is last minute. You can still find cheap flights to Foster City, especially if your plans have a little wiggle room. Try switching up your dates, exploring different ticket options or flying out of another hub.
How far in advance should I book a flight to Foster City?
To pick up the biggest savings on domestic journeys, book your flight to Foster City 28 days ahead of your travel dates. For international flights, book two to four months in advance. This improves your chances of getting the departure dates and seats you want.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Foster City?
You can save an average of 8% if you buy tickets on a Sunday instead of Fridays, which tend to be the priciest day to book.* When it comes to scoring a cheap flight to Foster City, the key is good timing.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to Foster City?
Lock in the aisle seat or window seat and travel to Foster City with one of these leading carriers:
  • United Airlines - 5,432 flights to Foster City each month, including 5,259 flights to San Francisco Intl. Airport (SFO) per month.
  • Alaska Airlines - 2,960 flights to Foster City each month, including 2,197 flights to San Francisco Intl. Airport (SFO) per month.
Where do you fly into Foster City?
When you're flying to Foster City, the main airport to land at is San Francisco Intl. Airport (SFO). You can also head to nearby hubs like Oakland Intl. Airport (OAK), Norman Y. Mineta San Jose Intl. Airport (SJC) or San Jose, CA (RHV-Reid Hillview). Another great option to consider when you fly to Foster City is San Carlos Airport (SQL).
Can I save money by booking a Foster City trip package?
Book a Foster City flight and hotel package deal on Expedia, and you can benefit from significant savings. It's simple to bundle your hotel and flight, and you can add car rentals and tours to create your own personalized Foster City getaway. Plus, there's nothing like the convenience of booking everything in one place.
Can I change or cancel my flight to Foster City?
If you bought your flight to Foster City within the last 24 hours, you can usually cancel or change it for free. After that, additional costs may apply depending on the airline's terms of service. For more information, visit our Customer Service Portal. Keep in mind that some flights are non-refundable, so you may be issued a credit toward future travel rather than a direct refund. When searching on Expedia, check the "Changes included" or "No cancel fee" boxes to see fares with flexible change policies.

*Flight schedules are subject to change.

*Available to One Key members.

Book with confidence

Tips to find the cheapest flights to Foster City

The cheapest day to fly

Get started finding a cheap flight to Foster City on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

The cheapest month to fly

November is the cheapest month to fly to Foster City. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Foster City. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to Foster City, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to Foster City

The lowest price for round-trip flights to Foster City in 2026 starts from from $38, while one-way tickets start from from $19. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Foster City. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Foster City

Frontier Airlines, Alaska Airlines, Delta, Southwest Airlines, American Airlines, United are just some of the airlines that can typically offer cheap tickets to Foster City. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Foster City and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Foster City, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Foster City. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your Foster City plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to Foster City

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Foster City.

Stopover savings

The cheapest tickets to Foster City are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Foster City. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to Foster City for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Foster City. Simply download the free Expedia app to your smart device and activate Foster City flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Foster City. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Tips to find the cheapest flights to Foster City

Travel information

Destination airport
San Francisco Intl.
Destination airport IATA code
SFO
Destination city name
San Francisco
Roundtrip price
$38

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