$19 Cheap Flights to Walnut, CA

Flights to Walnut at a glance

Traveling to Walnut is easy; you can choose between full-service and budget airlines. Compare travel times and select the flights to Walnut that best match your budget and itinerary as you plan to explore the city's renowned attractions and neighborhoods.

• Major airports near Walnut: John Wayne Airport (SNA), Los Angeles - Ontario International Airport (ONT)
• Closest (typical) airport to Walnut: Los Angeles - Ontario International Airport, ONT (around 16 miles)
• Flights per week: 5,450+ flights arriving across Walnut airports
• Number of airlines that fly to Walnut: around 25+ carriers

Popular airports near Walnut

Walnut is a charming city ideal for family outings, entertainment, and city getaways. Visitors flock to Walnut for its rich culture, outdoor activities, and business opportunities. The city is conveniently accessible via two major airports, making travel planning straightforward for those looking to explore this vibrant destination.

• John Wayne Airport (SNA): Situated in Orange County, California, approximately 24 miles from Walnut, this airport caters to both domestic and international travelers. It connects to over 220 domestic cities and 30 international destinations. Passengers can opt for upgrades to first class, business class, or premium economy seating for enhanced comfort, based on the specific routes and airlines. Key airlines operating from this airport include American Airlines, Alaska Airlines, and United.
• Los Angeles - Ontario International Airport (ONT): Found in San Bernardino County, California, about 16 miles from Walnut, this airport offers a mix of domestic and international flights. It connects to roughly 205 domestic cities and around 60 international locations. Travelers have the option to upgrade to first class, premium economy class, or business class seating for a more comfortable journey, depending on the airlines and routes. Notable airlines at this airport include American Airlines, Frontier Airlines, and Southwest Airlines.

Top routes to Walnut

• Seattle (SEA) to Walnut (SNA/ONT), with one-way airfare from around $60
• San Francisco (SFO) to Walnut (SNA/ONT), with one-way fares starting at around $30
• Las Vegas (LAS) to Walnut (SNA/ONT), with one-way tickets available from around $30
• Denver (DEN) to Walnut (SNA/ONT), with one-way tickets available from around $40
• Portland (PWM/PDX) to Walnut (SNA/ONT), with one-way flights starting at around $55

Cheapest routes to Walnut

• San Francisco (SFO) to Walnut (SNA/ONT), with budget one-way fares from around $30
• Las Vegas (LAS) to Walnut (SNA/ONT), with cheap one-way fares from around $30
• Ogden (OGD) to Walnut (SNA), with budget one-way fares from around $35
• Phoenix (PHX) to Walnut (SNA/ONT), with cheap one-way fares from around $40
• Denver (DEN) to Walnut (SNA/ONT), with cheap one-way fares from around $40

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

Top airlines with flights to Walnut

• American Airlines: Provides service to John Wayne Airport (SNA) and Los Angeles - Ontario International Airport (ONT), representing about 28% of Walnut's arrivals. The typical one-way fare hovers around $270. Premium options may feature business class and first class, depending on the specific route.
• Southwest Airlines: Operates flights to John Wayne Airport (SNA) and Los Angeles - Ontario International Airport (ONT), making up roughly 20% of arrivals to Walnut. Passengers can expect an average one-way fare of about $240.
• United: Flies to John Wayne Airport (SNA) and Los Angeles - Ontario International Airport (ONT), accounting for nearly 18% of Walnut's arrivals. The average one-way fare is approximately $280, with premium service options including premium economy, business class, and first class based on the route.
• Alaska Airlines: Services John Wayne Airport (SNA) and Los Angeles - Ontario International Airport (ONT), representing around 9% of arrivals to Walnut. The average fare for a one-way ticket is about $240. Premium service options may include business class and first class, depending on the route.
• Frontier Airlines: Flies to John Wayne Airport (SNA) and Los Angeles - Ontario International Airport (ONT), constituting about 7% of Walnut's arrivals. The average one-way fare is around $140, making it an appealing low-cost option for travelers.

Best time to fly to Walnut

The most popular months for travelers to fly to Walnut are January, March, and April, when peak temperatures in Walnut can reach up to 63.1°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 76.6°F. For better deals, May usually offers the lowest average one-way fare around $199, roughly 9% cheaper than the yearly average. Looking for additional cheaper months to fly? September, August, and June offer average one-way fares of around $209, making them good options for flexible travelers.

*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 Walnut

Getting some of the best deals on flights to Walnut 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 Walnut 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 Walnut flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Walnut

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

• Public transportation: From John Wayne Airport, Tustin Station (a train station) is located about 5.3 miles away by car, while Balboa Island Ferry (a ferry terminal) is situated approximately 7.2 miles away by car, providing convenient access to both rail and ferry services.
• Hotel transfer: Transfers offer a convenient way to reach your hotel in Walnut, with options including free hotel shuttles and private rides, which can be arranged in advance.
• Car rental: Renting a car in Walnut is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Walnut 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 Walnut

• Los Angeles: As a sprawling metropolis, Los Angeles offers a vibrant urban experience that attracts travelers for family fun and entertainment. Situated in Los Angeles, Walnut provides easy access to iconic venues and attractions. Explore the thrills of Universal Studios Hollywood, unwind at Santa Monica Beach, or engage in events at the Los Angeles Convention Center. Whether seeking adventure or cultural experiences, this city has something for everyone.
• Anaheim: Located 13 miles drive away from Walnut, Anaheim is a city known for its family-friendly attractions and lively culture. Visitors flock here to experience the magic of Disneyland® Resort or the excitement of Knott's Berry Farm. In addition to theme parks, the Anaheim Convention Center serves as a hub for business travelers. With shopping centers and arts venues nearby, there's plenty to keep you entertained.
• Brea: Brea is located 7 miles drive away from Walnut and is a charming city ideal for families and those seeking entertainment. The area is known for its shopping centers and modern college university, making it a bustling spot for visitors. Nearby attractions include Disneyland® Resort and Knott's Berry Farm, both of which promise fun-filled experiences. Brea’s blend of urban life and recreational opportunities makes it a delightful destination.

Tips for short-haul flights to Walnut

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

• Pack light and skip checked bags—when flying with budget airlines, it's often more cost-effective to travel with just a carry-on. Save space by selecting mini toiletries, wearing your bulkiest items, and planning your outfits wisely. This approach also helps you avoid waiting at baggage claim upon arrival.
• Bring your own entertainment—many short-haul flights may lack in-flight entertainment options. Download your favorite TV shows, movies, music, or podcasts ahead of time, and consider bringing a book to keep yourself occupied. Remember to fully charge your devices before you board.
• Arrive at the airport in plenty of time—even for short or domestic flights, it's advisable to arrive at least 1.5 to 2 hours prior to your departure, taking into account potential traffic and security lines.
• Bring your own snacks and water—pack some snacks and a refillable water bottle to stay hydrated and save money while at the airport.

Tips for long-haul flights to Walnut

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

• Select your seat in advance—for longer flights, choosing your seat can significantly enhance your comfort. Full-service airlines often allow free seat selection once online check-in opens, typically 24–48 hours before your flight. Some airlines may permit seat selection even earlier.
• Arrive at the airport in plenty of time—make sure to arrive at the airport at least 3 hours before your departure for international flights to account for check-in, security, and immigration processes.
• Relax at the airport—if you have extra time, take the opportunity to 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 syncing your body clock by setting your watch and adjusting your sleep schedule to align with your destination's time zone. Aim to sleep or stay awake during the flight according to the local time at your arrival destination to help minimize jet lag.

Tips to find the cheapest flights to Walnut

The cheapest day to fly

Get started finding a cheap flight to Walnut 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

September is the cheapest month to fly to Walnut. 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 Walnut. 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 Walnut, 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 Walnut

The lowest price for round-trip flights to Walnut in 2026 starts 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 Walnut. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Walnut

Frontier Airlines, Southwest Airlines, Delta, JetBlue Airways are just some of the airlines that can typically offer cheap tickets to Walnut. 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 Walnut and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Walnut, 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 Walnut. 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 Walnut 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 Walnut

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 Walnut.

Stopover savings

The cheapest tickets to Walnut are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Walnut. 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 Walnut 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 Walnut. Simply download the free Expedia app to your smart device and activate Walnut 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 Walnut. 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.