A vineyard with rows of grapevines and clusters of ripe grapes.

$56 Cheap Flights to Sunnyside, WA

View $56 flight on Thu, Oct 8, 2026Opens in a new window

Popular airlines to Sunnyside

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

How much is the cheapest flight to Sunnyside?

Prices were available within the past 7 days and start at $56 for one-way flights and $104 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Allegiant Air
Delta
Alaska Airlines
United
American Airlines

Alternative airports near Sunnyside

Prices were available within the past 7 days. Prices and availability are subject to change.

What you need to know for your flight to Sunnyside

Flights to Sunnyside at a glance

Traveling to Sunnyside is easy—simply choose between full-service or budget-friendly airlines. Compare travel times and select the best option that fits your budget and itinerary, so you can enjoy the city’s renowned attractions and neighborhoods with the most affordable Sunnyside flights available.

  • Major airports near Sunnyside: Tri-Cities Airport (PSC), Yakima Air Terminal - McAllister Field Airport (YKM)
  • Closest airport to Sunnyside: Yakima Air Terminal - McAllister Field Airport, YKM (around 30 miles)
  • Flights per week: 1,300+ flights arriving across Sunnyside airports
  • Number of airlines that fly to Sunnyside: around 10+ carriers

Popular airports near Sunnyside

Sunnyside is a charming city perfect for outdoor enthusiasts and couples seeking a romantic getaway amidst stunning scenery. Visitors flock to Sunnyside for its adventures, entertainment, and natural beauty. The city is conveniently accessible through two major airports, making travel planning a breeze.

  • Tri-Cities Airport (PSC): Situated in Franklin County, Washington, approximately 43 miles from Sunnyside, this airport provides both domestic and international flights. It connects to around 120 domestic locations and over 25 international ones, allowing travelers to opt for premium economy, first class, or business class seating for enhanced comfort, depending on the airline and route. Major carriers include Delta, Alaska Airlines, and United.
  • Yakima Air Terminal - McAllister Field Airport (YKM): Found in Yakima County, Washington, about 30 miles from Sunnyside, this airport offers both domestic and international services, linking to over 15 domestic cities and a single international destination. Prominent airlines operating here are Alaska Airlines, American Airlines, and Hawaiian Airlines.

Top routes to Sunnyside

  • Guadalajara (GDL) to Sunnyside (PSC), with one-way airfare from around $230
  • Los Angeles (LAX) to Sunnyside (PSC/YKM), with one-way flight options from around $90
  • Las Vegas (LAS) to Sunnyside (PSC/YKM), with one-way tickets available from around $110
  • San Diego (SAN) to Sunnyside (PSC/YKM), with one-way flight options from around $110
  • Phoenix (PHX) to Sunnyside (PSC/YKM), with one-way tickets available from around $95

Cheapest routes to Sunnyside

  • Seattle (SEA) to Sunnyside (PSC/YKM), with low one-way fares from around $60
  • Burbank (BUR) to Sunnyside (PSC), with budget one-way fares from around $70
  • Los Angeles (LAX) to Sunnyside (PSC/YKM), with low one-way fares from around $90
  • Eugene (EUG) to Sunnyside (PSC), with cheap one-way fares from around $90
  • Boise (BOI) to Sunnyside (PSC), with low one-way fares from around $90

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

Top airlines with flights to Sunnyside

  • Delta: Operating flights to Tri-Cities Airport (PSC), Delta represents roughly 31% of arrivals to Sunnyside. The average fare for a one-way ticket is about $270, with options for premium service including premium economy and first class depending on the route.
  • Alaska Airlines: Providing service to both Tri-Cities Airport (PSC) and Yakima Air Terminal - McAllister Field Airport (YKM), Alaska Airlines accounts for approximately 27% of arrivals in Sunnyside. One-way fares average around $260, with premium cabin choices such as business class and first class available based on the route.
  • United: With flights to Tri-Cities Airport (PSC), United facilitates around 24% of arrivals into Sunnyside. The average price for a one-way fare is approximately $300, featuring first class as a premium cabin option depending on the specifics of the route.
  • American Airlines: Serving both Tri-Cities Airport (PSC) and Yakima Air Terminal - McAllister Field Airport (YKM), American Airlines is responsible for about 13% of arrivals in Sunnyside. The typical one-way fare is around $360, with first class as a possible premium cabin option depending on the route.
  • Aeromexico: Offering flights to Tri-Cities Airport (PSC), Aeromexico makes up roughly 3% of arrivals to Sunnyside. The average one-way fare stands at approximately $380, and premium service may include business class depending on the specific route.

Best time to fly to Sunnyside

The most popular months for travelers to fly to Sunnyside are January, March, and April, when peak temperatures in Sunnyside can reach up to 51.8°F in April. If you prefer quieter travel, consider September, the least busy time to visit with temperatures around 66.4°F and typically the lowest average one-way fare (around $251), roughly 8% cheaper than the yearly average. Looking for additional cheaper months to fly? October, May, and August offer average one-way fares of around $256, making them good options for flexible travelers.

calendar iconMonthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinesscrowd level iconDemandprice iconAverage one-way Fare
January32.2°F (0.1°C)No Rain (Dry)Mostly CloudyModerately High$321
February36.0°F (2.2°C)No Rain (Dry)Mostly SunnyAverage$275
March43.5°F (6.4°C)No Rain (Dry)Mostly SunnyModerately High$285
April51.8°F (11.0°C)No Rain (Dry)Mostly SunnyModerately High$300
May61.9°F (16.6°C)No Rain (Dry)Mostly SunnyAverage$256
June69.3°F (20.7°C)No Rain (Dry)SunnyAverage$259
July77.7°F (25.4°C)No Rain (Dry)SunnyAverage$261
August76.6°F (24.8°C)No Rain (Dry)SunnyAverage$258
September66.4°F (19.1°C)No Rain (Dry)SunnyModerately Low$251
October52.9°F (11.6°C)No Rain (Dry)Mostly SunnyModerately Low$254
November39.7°F (4.3°C)No Rain (Dry)Mostly SunnyModerately Low$266
December31.3°F (-0.4°C)No Rain (Dry)Mostly CloudyAverage$286

*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 Sunnyside

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

*For members. Select hotels.

Arriving in Sunnyside

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

  • Public transportation: From Tri-Cities Airport, Pasco Station, a train station, is located about 3.5 miles away by car, while Burbank Seaport, a seaport, is situated approximately 8.3 miles from the airport, typically accessed by car as well.
  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Sunnyside, with private rides that can be arranged in advance.
  • Car rental: Renting a car in Sunnyside is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Sunnyside 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 around Sunnyside

  • Grandview: Grandview is located 7 miles away from Sunnyside and offers a delightful escape for travelers seeking outdoor adventures and picturesque scenery. The area is perfect for romantic outings and recreational activities, including skiing. Visitors can explore local attractions like Bill's Berry Farm for a taste of farm life, the serene landscapes of Hanford Reach National Monument, and the historic Teapot Dome Service Station, which adds a cultural touch to your trip.
  • Mabton: Located 8 miles away from Sunnyside, Mabton is a charming city that beckons outdoor enthusiasts and adventure seekers. The landscape features beautiful valleys and rivers, ideal for hiking and enjoying nature. Key highlights include Bill's Berry Farm for fresh local produce, the American Hop Museum showcasing the region's hop-growing history, and the historic Teapot Dome Service Station, perfect for those interested in local culture and history.
  • Granger: Granger is located 9 miles away from Sunnyside and is a haven for those who love outdoor activities and scenic views. With access to hiking trails and beautiful natural surroundings, it's a great spot for adventure. Travelers can visit the Northern Pacific Railway Museum for a glimpse into the region's railway history, the American Hop Museum for cultural insights, and the historic Teapot Dome Service Station, which adds a unique historical element to your journey.

Tips for short-haul flights to Sunnyside

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. Maximize space by using mini toiletries, wearing your largest clothes, and coordinating outfits effectively. This approach also helps you avoid the wait at baggage claim when you arrive.
  • Bring your own entertainment—many short-haul flights may lack in-flight entertainment. To keep yourself entertained, download TV shows, movies, music, or podcasts ahead of time, and consider bringing a book. Remember to charge your devices fully before you board.
  • Arrive at the airport in plenty of time—for short or domestic flights, it's advisable 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 while at the airport.

Tips for long-haul flights to Sunnyside

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 typically allow free seat selection once online check-in begins, which is usually 24–48 hours before your flight. Some airlines may even offer seat selection earlier than this.
  • 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 some extra time, take the opportunity to explore the shops, grab a coffee, or unwind at your gate or in a departure lounge if available. Airport Wi-Fi is generally free and accessible.
  • 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 on the flight according to the local time at your arrival destination to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to Sunnyside?
September is the cheapest month to fly to Sunnyside. Demand is lower then, so fares are generally more affordable. Organizing your trip outside of major holidays and school breaks could also help you save.
Which US cities have the cheapest flights to Sunnyside?
Land cheap flights to Sunnyside from Seattle, Salt Lake City and Denver. These cities usually offer the lowest fares to this much-loved destination. But keep in mind that stopovers, seasonality and demand will also have an influence on rates, so remain flexible and book when you see a bargain.
Which US cities fly direct to Sunnyside?
There are 9 US destinations you're able to fly to Sunnyside nonstop from. Compare the options by selecting the "Direct flights only" box on Expedia and choose the ideal departure point for you. Here are some of the major cities to jet off from:
  • Seattle
  • Salt Lake City
  • Denver
  • Phoenix
  • San Francisco
How to find a cheap flight to Sunnyside?
Book in advance or look for cheap flights to Sunnyside during the low season, such as December and January. Jetting off on a Thursday can also save you 16% on average compared to a Sunday flight.* The Expedia app makes it even easier to know the right time to book. Just activate the toggle for "Watch prices" and you'll receive a notification as soon as fares drop.*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 Sunnyside?
It's possible to get awesome deals on last-minute departures to Sunnyside, especially if your plans are flexible. Think about departing from a different airport, changing your trip dates or selecting an alternative airline to get a cheap flight to Sunnyside.
How far in advance should I book a flight to Sunnyside?
To snap up some of the best deals on domestic journeys, book your flight to Sunnyside 28 days ahead of your travel dates. For international flights, search for your ticket between two and four months in advance. This improves your chances of locking in your preferred departure dates and seats.**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 Sunnyside?
You'll save an average of 8% by buying tickets on a Sunday rather than Fridays, which tend to be the most expensive day to book.* When it comes to snapping up a cheap flight to Sunnyside, 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 Sunnyside?
A total of 5 airlines connect 8 airports around the world to Sunnyside. Here are some of the most popular airlines to Sunnyside, where Tri-Cities Airport (PSC) is the major arrival point:
  • Alaska Airlines
  • Delta Air Lines
  • United Airlines
  • American Airlines
Where do you fly into Sunnyside?
The main airport to fly to Sunnyside is Yakima Air Terminal - McAllister Field Airport (YKM). There's also the option to land at Tri-Cities Airport (PSC) when flying to Sunnyside.
How far is the airport from central Sunnyside?
Touching down at Yakima Air Terminal - McAllister Field Airport (YKM) puts you around 30 mi northwest of central Sunnyside.
Can I save money by booking a Sunnyside trip package?
Bundle your flights and accommodations and you could save hundreds of dollars. Plus, you can add extras like tours and car rentals to your Sunnyside flight and hotel package deal. With Expedia, it's a breeze to organize all your Sunnyside travel plans in the same place.
Can I change or cancel my flight to Sunnyside?
It's often possible to cancel or change your flight to Sunnyside. Many airlines let you cancel your flights for free within 24 hours of making your booking. However, some flights are non-refundable, and airlines may issue you a credit toward a future flight rather than a direct refund. To secure cheap flights to Sunnyside with flexible change policies, select "Changes included" or "No cancel fee" when you search. Looking for more information? Go to our Customer Service Portal.

*Flight schedules are subject to change.

*Available to One Key members.

Book with confidence

Tips to find the cheapest flights to Sunnyside

The cheapest day to fly

Get started finding a cheap flight to Sunnyside 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 Sunnyside. 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 Sunnyside. 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 Sunnyside, 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 Sunnyside

The lowest price for round-trip flights to Sunnyside in 2026 starts from from $104, while one-way tickets start from from $56. 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 Sunnyside. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Sunnyside

Allegiant Air, Delta, Alaska Airlines, United, American Airlines are just some of the airlines that can typically offer cheap tickets to Sunnyside. 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 Sunnyside and countless more destinations worldwide.

The most affordable airports to fly into

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

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 Sunnyside.

Stopover savings

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

Travel information

Destination airport
Tri-Cities
Destination airport IATA code
PSC
Destination city name
Pasco
Roundtrip price
$104

Trending flights to Sunnyside

Prices were available within the past 7 days and start at $56 for one-way flights and $104 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Allegiant Air

Explore a world of travel with Expedia