$50 Cheap Flights to SeaTac, WA

View $50 flight on Mon, May 5, 2025Opens in a new window

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Find available prices by choosing your travel dates.

How much is the cheapest flight to SeaTac?

Prices were available within the past 7 days and start at $50 for one-way flights and $100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Apr 24 - Mon, Apr 28
LAX
Los Angeles Intl.
SEA
Seattle - Tacoma Intl.
$100 Roundtrip, just found
$100
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Apr 24 from Los Angeles Intl. to Seattle - Tacoma Intl., returning Mon, Apr 28, priced at $100 just found
Frontier Airlines
Thu, Apr 24 - Mon, Apr 28
LAX
Los Angeles Intl.
SEA
Seattle - Tacoma Intl.
$105 Roundtrip, just found
$105
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Apr 24 from Los Angeles Intl. to Seattle - Tacoma Intl., returning Mon, Apr 28, priced at $105 just found
Alaska Airlines
Tue, Apr 29 - Wed, Apr 30
ORD
O'Hare Intl.
SEA
Seattle - Tacoma Intl.
$162 Roundtrip, found 7 hours ago
$162
Roundtrip
found 7 hours ago
Select Alaska Airlines flight, departing Tue, Apr 29 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Apr 30, priced at $162 found 7 hours ago
American Airlines
Wed, Sep 17 - Wed, Sep 24
ORD
O'Hare Intl.
SEA
Seattle - Tacoma Intl.
$169 Roundtrip, found 6 hours ago
$169
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Wed, Sep 17 from O'Hare Intl. to Seattle - Tacoma Intl., returning Wed, Sep 24, priced at $169 found 6 hours ago
Hawaiian Airlines
Wed, Apr 23 - Sat, May 10
ORD
O'Hare Intl.
SEA
Seattle - Tacoma Intl.
$169 Roundtrip, found 10 hours ago
$169
Roundtrip
found 10 hours ago
Select Hawaiian Airlines flight, departing Wed, Apr 23 from O'Hare Intl. to Seattle - Tacoma Intl., returning Sat, May 10, priced at $169 found 10 hours ago

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

April 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 2025 starts from from $100, while one-way tickets start from from $50. 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

Spirit Airlines, Frontier Airlines, American Airlines, Delta, United, Alaska Airlines, Hawaiian Airlines 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.

Frequently asked questions

What month is the cheapest to fly to SeaTac?
Flights to SeaTac are generally the cheapest in June *. You may be able to snap up a great deal for fares during this month if you keep an eye out. *Cheapest month to fly is based on the month with the cheapest flight found on Expedia.com in the next 330 days.
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.
Flights to SeaTac information
Destination airport
Seattle - Tacoma Intl.
Destination airport IATA code
SEA
Destination city name
Seattle
Roundtrip price
$100

Trending flights to SeaTac

Prices were available within the past 7 days and start at $50 for one-way flights and $100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Thu, Apr 24 - Mon, Apr 28
LAX
Los Angeles Intl.
SEA
Seattle - Tacoma Intl.
$100 Roundtrip, just found
$100
Roundtrip
just found
Select Spirit Airlines flight, departing Thu, Apr 24 from Los Angeles Intl. to Seattle - Tacoma Intl., returning Mon, Apr 28, priced at $100 just found

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*Available to One Key members.