A city skyline with the Space Needle and a mountain in the background.

$29 Cheap Flights to SeaTac, WA

View $29 flight on Thu, Oct 15, 2026Opens in a new window

Popular airlines to SeaTac

  • 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 SeaTac?

Prices were available within the past 7 days and start at $29 for one-way flights and $64 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Harbour Air Seaplanes
Harbour Air Seaplanes
Harbour Air Seaplanes
Harbour Air Seaplanes
Hahn Air Technologies

Alternative airports near SeaTac

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

Find the cheapest month to fly from Columbus (CMH) to Seattle (SEA)

From $220 - $368 per traveler.

What you need to know for your flight to SeaTac

Flights to SeaTac at a glance

Traveling to SeaTac is a breeze with a variety of options available. You can choose from full-service or low-cost airlines, explore direct flights, and compare journey times to find the best fit for your budget and itinerary as you plan to discover Seattle's iconic sights and neighborhoods.

  • Major airports in and around SeaTac: Seattle - Tacoma International Airport (SEA), Lake Union Seaplane Base Airport (LKE)
  • Closest airport to SeaTac: Seattle - Tacoma International Airport, SEA (within SeaTac)
  • Flights per week: 7,350+ flights arriving across SeaTac airports
  • Number of airlines that fly to SeaTac: around 65+ carriers

Popular airports in and around SeaTac

SeaTac is a vibrant city perfect for outdoor adventures, family getaways, and urban exploration. Travelers flock to this destination for its stunning scenery, romantic spots, and beach activities. The city is conveniently accessible via two major airports, making it easy to reach from various international destinations.

  • Seattle - Tacoma International Airport (SEA): Situated in King County, Washington, this airport facilitates both domestic and international flights, linking over 270 domestic cities and more than 285 global destinations. Travelers can opt for upgrades to first class, business class, or premium economy class seating for enhanced comfort, depending on the airline and route. Major airlines operating here include Alaska Airlines, Delta, and American Airlines.
  • Lake Union Seaplane Base Airport (LKE): Found in King County, Washington, approximately 13 miles from SeaTac, this airport primarily serves international flights. Harbour Air Seaplanes is the prominent airline catering to travelers at this location.

Top routes to SeaTac

  • Los Angeles (LAX) to SeaTac (SEA), with one-way tickets available from around $55
  • Phoenix (PHX) to SeaTac (SEA), with one-way airfare from around $50
  • Las Vegas (LAS) to SeaTac (SEA), with one-way fares starting at around $45
  • Chicago (ORD/MDW) to SeaTac (SEA), with one-way tickets available from around $80
  • Denver (DEN) to SeaTac (SEA), with one-way flights starting at around $50

Cheapest routes to SeaTac

  • Las Vegas (LAS) to SeaTac (SEA), with budget one-way fares from around $45
  • Phoenix (PHX) to SeaTac (SEA), with low-cost one-way tickets from around $50
  • Denver (DEN) to SeaTac (SEA), with cheap one-way fares from around $50
  • Sacramento (SMF) to SeaTac (SEA), with budget one-way fares from around $50
  • Salt Lake City (SLC) to SeaTac (SEA), with cheap one-way fares from around $50

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

Top airlines with flights to SeaTac

  • Alaska Airlines: Operating flights to Seattle - Tacoma International Airport (SEA), Alaska Airlines is responsible for approximately 29% of SeaTac's arrivals. The typical one-way fare hovers around $320, with options for premium cabins including business and first class depending on the specific route.
  • Delta: Providing services to Seattle - Tacoma International Airport (SEA), Delta accounts for roughly 23% of the arrivals at SeaTac. The average fare for a one-way ticket is about $440, with premium cabin options that may feature premium economy, business, and first class based on the route.
  • American Airlines: With flights to Seattle - Tacoma International Airport (SEA), American Airlines makes up around 14% of SeaTac's arrivals. The average one-way fare is approximately $390, and travelers can choose from premium cabin options like business and first class depending on the route.
  • United: Flying into Seattle - Tacoma International Airport (SEA), United represents about 13% of arrivals to SeaTac. One-way fares are typically around $370, and premium cabins may offer premium economy, business, and first class depending on the specific route taken.
  • Southwest Airlines: Serving Seattle - Tacoma International Airport (SEA), Southwest Airlines accounts for roughly 7% of SeaTac's arrivals. Passengers can expect an average one-way fare of about $230, making it a cost-effective choice for travelers.

Best time to fly to SeaTac

The most popular months for travelers to fly to SeaTac are January, March, and April, when peak temperatures in SeaTac can reach up to 47.8°F in April. If you prefer quieter travel, consider October, the least busy time to visit with temperatures around 52.3°F and typically the lowest average one-way fare (around $227), roughly 8% cheaper than the yearly average. Looking for additional cheaper months to fly? September, November, and February offer average one-way fares roughly ranging from $229 to $241, making them good options for flexible travelers.

calendar iconMonthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinesscrowd level iconDemandprice iconAverage one-way Fare
January40.1°F (4.5°C)Light RainMostly CloudyModerately High$295
February39.9°F (4.4°C)Light RainMostly CloudyAverage$241
March43.5°F (6.4°C)Light RainMostly CloudyModerately High$248
April47.8°F (8.8°C)Light RainMostly CloudyModerately High$262
May55.2°F (12.9°C)Light RainMostly SunnyAverage$243
June60.4°F (15.8°C)Light RainMostly SunnyAverage$250
July66.9°F (19.4°C)No Rain (Dry)Mostly SunnyAverage$257
August67.3°F (19.6°C)No Rain (Dry)Mostly SunnyAverage$246
September61.2°F (16.2°C)Light RainMostly SunnyModerately Low$229
October52.3°F (11.3°C)Light RainMostly SunnyModerately Low$227
November44.1°F (6.7°C)Light RainMostly CloudyModerately Low$236
December38.8°F (3.8°C)Light RainMostly CloudyAverage$259

*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 SeaTac

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

*For members. Select hotels.

Arriving in SeaTac

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

  • Public transportation: From Seattle - Tacoma International Airport, SeaTac/Airport Station, a metro station, is located about 0.3 miles from the airport and easily reachable on foot, while Tukwila Station, a train station, is situated about 4.3 miles away by car.
  • Hotel transfer: Transfers offer a convenient way to reach your hotel in SeaTac, with options including free hotel shuttles and private rides, which can be arranged in advance.
  • Car rental: Renting a car in SeaTac is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in SeaTac 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 SeaTac

  • Seattle: As a vibrant metropolis, Seattle offers travelers a rich blend of outdoor adventures, family-friendly activities, and stunning scenery. SeaTac is situated in Seattle, making it an ideal base for exploring the city's highlights. Don't miss the iconic Seattle Waterfront, perfect for a scenic stroll or beach relaxation. The Space Needle provides breathtaking city views, while the Seattle Center is a fantastic urban park for family outings. With attractions like national parks and sports facilities nearby, Seattle promises a dynamic experience for every visitor.
  • Vashon Island: Vashon Island is located 13 miles drive away from SeaTac and is a haven for those seeking outdoor adventures and breathtaking natural beauty. This serene island features lush landscapes, recreational areas, and golf courses for those looking to enjoy the great outdoors. Key points of interest include the historic Point Robinson Lighthouse, perfect for culture enthusiasts, and KVI Beach, which invites visitors for a relaxing beach day. With its tranquil ambiance and scenic views, Vashon Island is an excellent escape from the hustle and bustle.
  • Federal Way: Located 9 miles drive away from SeaTac, Federal Way is a family-friendly city that combines outdoor fun with thrilling adventures. With attractions like the Wild Waves Theme and Water Park, visitors can enjoy water rides and amusement activities. The Tacoma Dome offers a range of events in a lively arena setting, while ample recreational areas provide opportunities for relaxation and play. Federal Way is a fantastic stop for families looking to explore the region's entertainment and natural beauty.

Tips for short-haul flights to SeaTac

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 economical to travel with just a carry-on. Maximize your packing efficiency by using mini toiletries, wearing your bulkiest clothing, and coordinating outfits. This approach also allows you to bypass 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 beforehand, and consider bringing a book. Be sure to fully charge your devices prior to boarding.
  • 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 before departure, taking into account potential traffic and security lines.
  • Bring your own snacks and water—pack your favorite snacks and a refillable water bottle to stay hydrated and save money while at the airport.

Tips for long-haul flights to SeaTac

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

  • Select your seat in advance—for long 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 prior to your flight. Some airlines even permit seat selection before this timeframe.
  • Arrive at the airport in plenty of time—aim to reach the airport at least 3 hours before departure for international flights. This gives you ample time for check-in, security, and immigration processes.
  • Relax at the airport—if you find yourself with extra time, take the opportunity to explore the shops, grab a coffee, or unwind at your gate or in a departure lounge if you have access. Airport Wi-Fi is generally free and readily available.
  • Adjust to the new time zone mid-flight—begin syncing your body clock by changing your watch and sleep schedule to align with your destination's time zone. Try to rest or stay awake during the flight according to the local time at your arrival point to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to SeaTac?
September is the cheapest month to fly to SeaTac. Demand is lower then, so you're likely to get a good deal. Organizing your trip outside of public and school holidays could also help you save.
Which US cities have the cheapest flights to SeaTac?
Score cheap flights to SeaTac from Portland, Anchorage and Phoenix. These cities generally offer the best fares to this exciting destination. But remember that demand, seasonality and stopovers will also impact rates, so stay flexible and book when you see a bargain.
Which US cities fly direct to SeaTac?
There are 83 US destinations where you can fly to SeaTac directly from. Explore the options by selecting the "Direct flights only" box on Expedia and find the ideal starting point for you. Here are several of the leading cities to set off from:
  • Portland
  • Anchorage
  • Phoenix
  • Los Angeles
  • Spokane
How to find a cheap flight to SeaTac?
Book early to snag cheap flights to SeaTac. Also, consider visiting during off-season months like February and November. If you jet off on a Thursday, you'll save an average of 16% compared to departing on a Sunday.* Save time checking every day and create a price alert on the Expedia app. We'll update you when 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 SeaTac?
Although booking in advance is generally the easiest way to save money, don't panic if your SeaTac getaway is last minute. You can still find cheap flights to SeaTac, especially if your plans have a little leeway. Try changing your dates, exploring different ticket types or jetting out of another hub.
How far in advance should I book a flight to SeaTac?
Lock in your flight to SeaTac two to four months ahead if you're visiting from an international destination. For domestic travel, the general guideline is 28 days in advance. Cheaper fares and a greater choice of departure dates, times and seating options are just a few of the benefits of booking early.**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 SeaTac?
Sundays are typically the best day to book a cheap flight to SeaTac, where you can save 8% on average compared to Fridays. If you choose to purchase tickets on a Friday, expect to pay more as this is often the most expensive day.**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 SeaTac?
SeaTac is accessible from 118 airports worldwide through 31 airlines, with Seattle - Tacoma Intl. Airport (SEA) as its chief entry point. Select from these well-known airlines to SeaTac when booking your trip:
  • Alaska Airlines
  • Delta Air Lines
  • American Airlines
  • United Airlines
Where do you fly into SeaTac?
The main hub when you fly to SeaTac is Seattle - Tacoma Intl. Airport (SEA), but there are other nearby options like Renton Municipal Airport (RNT) and Boeing Field Airport (BFI). You can also touch down at Tacoma, WA (TIW-Tacoma Narrows) and Kenmore Air Harbor Airport (KEH) when flying to SeaTac.
How far is the airport from central SeaTac?
You'll be around 0.1 mi west of central SeaTac after touching down at Seattle - Tacoma Intl. Airport (SEA).
Can I save money by booking a SeaTac trip package?
Bundle your flight and hotel and you could save hundreds of dollars. Better yet, you can add extras like car rentals and tours to your SeaTac flight and hotel package deal. With Expedia, it's simple to book all your SeaTac travel arrangements in one place.
Can I change or cancel my flight to SeaTac?
It's usually possible to change or cancel your flight to SeaTac. Many airlines allow you to cancel your flights for free within 24 hours of booking. However, some flights are non-refundable, and airlines may issue you a credit toward a future trip rather than a direct refund. To reserve cheap flights to SeaTac with flexible change policies, pick "No cancel fee" or "Changes included" when you search. Want more details? 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 SeaTac

The cheapest day to fly

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

The lowest price for round-trip flights to SeaTac in 2026 starts from from $64, while one-way tickets start from from $29. 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 SeaTac. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to SeaTac

Harbour Air Seaplanes, Hahn Air Technologies are just some of the airlines that can typically offer cheap tickets to SeaTac. 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 SeaTac and countless more destinations worldwide.

The most affordable airports to fly into

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

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 SeaTac.

Stopover savings

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

Travel information

Destination airport
Seattle - Tacoma Intl.
Destination airport IATA code
SEA
Destination city name
Seattle
Roundtrip price
$64

Trending flights to SeaTac

Prices were available within the past 7 days and start at $29 for one-way flights and $64 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines

Explore a world of travel with Expedia