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$124 Cheap Flights from Pasco (PSC) to Seattle (SEA)

View $124 flight on Wed, Oct 14, 2026Opens in a new window

Popular airlines from Tri-Cities Airport (PSC) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Pasco to Seattle (PSC-SEA)

Prices were available within the past 7 days and start at $124 for one-way flights and $227 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Aug 25 - Sat, Aug 29
PSC
Pasco
SEA
Seattle
$227 Roundtrip, found 2 days ago
$227
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Aug 25 from Pasco to Seattle, returning Sat, Aug 29, priced at $227 found 2 days ago
Alaska Airlines
Tue, Sep 29 - Tue, Oct 20
PSC
Pasco
SEA
Seattle
$232 Roundtrip, found 4 days ago
$232
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Sep 29 from Pasco to Seattle, returning Tue, Oct 20, priced at $232 found 4 days ago
Alaska Airlines
Sat, Aug 22 - Sat, Aug 29
PSC
Pasco
SEA
Seattle
$237 Roundtrip, found 4 hours ago
$237
Roundtrip
found 4 hours ago
Select Alaska Airlines flight, departing Sat, Aug 22 from Pasco to Seattle, returning Sat, Aug 29, priced at $237 found 4 hours ago
Alaska Airlines
Tue, Oct 6 - Wed, Oct 14
PSC
Pasco
SEA
Seattle
$247 Roundtrip, found 3 days ago
$247
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Oct 6 from Pasco to Seattle, returning Wed, Oct 14, priced at $247 found 3 days ago
Alaska Airlines
Sat, Sep 5 - Fri, Oct 2
PSC
Pasco
SEA
Seattle
$252 Roundtrip, found 4 days ago
$252
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Sep 5 from Pasco to Seattle, returning Fri, Oct 2, priced at $252 found 4 days ago
Alaska Airlines
Wed, Sep 16 - Mon, Sep 28
PSC
Pasco
SEA
Seattle
$252 Roundtrip, found 3 hours ago
$252
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Wed, Sep 16 from Pasco to Seattle, returning Mon, Sep 28, priced at $252 found 3 hours ago
Alaska Airlines
Wed, Sep 2 - Fri, Oct 2
PSC
Pasco
SEA
Seattle
$256 Roundtrip, found 4 days ago
$256
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Wed, Sep 2 from Pasco to Seattle, returning Fri, Oct 2, priced at $256 found 4 days ago
Alaska Airlines
Sun, Aug 23 - Sun, Aug 30
PSC
Pasco
SEA
Seattle
$257 Roundtrip, just found
$257
Roundtrip
just found
Select Alaska Airlines flight, departing Sun, Aug 23 from Pasco to Seattle, returning Sun, Aug 30, priced at $257 just found
American Airlines
Tue, Aug 25 - Sat, Aug 29
PSC
Pasco
SEA
Seattle
$297 Roundtrip, found 2 days ago
$297
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Aug 25 from Pasco to Seattle, returning Sat, Aug 29, priced at $297 found 2 days ago
United
Fri, Jul 24 - Sun, Jul 26
PSC
Pasco
SEA
Seattle
$1,030 Roundtrip, found 4 hours ago
$1,030
Roundtrip
found 4 hours ago
Select United flight, departing Fri, Jul 24 from Pasco to Seattle, returning Sun, Jul 26, priced at $1,030 found 4 hours ago

Find the cheapest month to fly from Pasco (PSC) to Seattle (SEA)

January is typically the cheapest month to fly

From $79 - $189 per traveler.

What you need to know for your flight from Tri-Cities to Seattle - Tacoma Intl.

Pasco (PSC) to Seattle (SEA) at a glance

Travel from Pasco (PSC) to Seattle (SEA) with a selection of airlines offering various one-way options on this domestic short-haul route. Explore fare flights from Pasco to Seattle and compare itineraries that align with your budget and schedule, allowing you to make the most of your visit to Seattle's iconic attractions and neighborhoods. Check out the essential details for flights from Tri-Cities Airport to Seattle-Tacoma International Airport and plan your next flight today.

  • Fastest flight duration: around 1h 15m non-stop
  • Route distance: roughly 150 miles (240 km)
  • Flights per week: around 15+ flights with multiple daily departures on average
  • Typical fares (one-way): economy tickets often range from $50–$280, depending on seasonality and how far ahead you book

Flights from Tri-Cities Airport (PSC) to Seattle - Tacoma International Airport (SEA)

Based on recent bookings, here are the top airlines favored by travelers flying non-stop from Pasco to Seattle. This selection allows you to explore various options, balancing price, total travel time, and cabin class to create the best itinerary for your journey.

  • Alaska Airlines: This full-service airline provides non-stop flights, with one-way ticket prices usually falling between $60 and $290. It operates around 61% of the departures for this route, with a total travel duration of 1 hour and 15 minutes.
  • Delta: Another full-service option, Delta offers non-stop flights and one-way fares typically between $50 and $300. It represents roughly 36% of the route's departures, with a complete journey time of 1 hour and 15 minutes.
  • American Airlines: As a full-service carrier, American Airlines provides non-stop service with one-way fares ranging from $130 to $340. It accounts for about 2% of departures along this route, with a total travel time of 1 hour and 15 minutes.
  • Hawaiian Airlines: Hawaiian Airlines, a full-service carrier, also offers non-stop flights, with one-way fares generally between $50 and $230. This airline makes up around 1% of the departures on this route, with a journey time of 1 hour and 15 minutes.

Travelers flying from Pasco to Seattle have the option to upgrade their flight. Alaska Airlines provides first class and business class services, while Delta offers first class and premium economy cabins for a more comfortable journey.

Best time to fly from Pasco (PSC) to Seattle (SEA)

The most popular months for travelers flying from Pasco to Seattle are January, February, and March, when peak temperatures in Seattle reach up to 43.9°F in March. If you prefer quieter travel, consider August, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 67.5°F. For better deals, May usually offers the lowest average one-way fare around $131. Flight availability peaks in December, with approximately 21 flights per week, making it easier to find convenient departure times.

  • Cheapest time to fly: May usually offers good deals with average one-way fare around $131, roughly 13% cheaper than the yearly average.
  • More budget-friendly months to fly: February, November, and January typically offer average one-way fares of around $139.
  • Most flight options: December has the highest number of flights from Pasco to Seattle, with approximately 21 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January40.3°F (4.6°C)High20$142
February40.5°F (4.7°C)High16$136
March43.9°F (6.6°C)High17$158
April48.6°F (9.2°C)Average13$168
May55.8°F (13.2°C)Average15$131
June61.0°F (16.1°C)Low15$167
July67.1°F (19.5°C)Low14$155
August67.5°F (19.7°C)Low13$150
September61.3°F (16.3°C)Average14$159
October52.7°F (11.5°C)Average14$155
November44.2°F (6.8°C)Average16$136
December39.2°F (4.0°C)Average21$158

*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.

Alternative route from Pasco (PSC) to Seattle (SEA)

  • Pasco to Seattle (PSC-BFI): Boeing Field Airport (BFI) is located approximately 6 miles from Seattle - Tacoma International Airport (SEA), providing convenient access to the region.

How to find the best prices for flights from Pasco (PSC) to Seattle (SEA)

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

  1. Best times to book and fly: cheaper fares are usually available when booking 2-8 weeks in advance, which coincides with when most travelers make their reservations. Morning departures between 5 am and 12 pm often provide lower prices and are also the most sought-after times. Additionally, flying on Saturday typically yields cheaper rates, even though Friday is the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. 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.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. 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 allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Seattle - Tacoma International Airport from Tri-Cities Airport

Seattle welcomes travelers from Pasco with a range of transport options based on price, convenience, and proximity. Seattle city center is approximately a 20-minute drive (covering about 14 miles) from Seattle - Tacoma International Airport, depending on traffic. Here's how to reach Seattle efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Seattle, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Seattle - Tacoma International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Seattle - Tacoma International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Seattle - Tacoma International Airport, SeaTac/Airport Station, a metro station, is conveniently located just 0.3 miles from the airport, easily accessible on foot, while Tukwila Station, a train station, is situated about 4.3 miles away and typically reached by car.

Frequently asked questions

How much does a flight from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find cheap one-way flights from $124 and cheap return flights from $227 Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) with Expedia. One-way flights generally range between $68 and $1038, and roundtrip flights usually range from $148 to $886. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The cheapest month to fly from PSC to SEA is August when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Choose from 4 airlines operating direct flights from PSC to SEA:

  • Delta operates around 27 direct flights from PSC to SEA every week
  • Hawaiian Airlines operates around 23 direct flights from PSC to SEA every week
  • British Airways operates around 7 direct flights from PSC to SEA every week
  • Japan Airlines operates around 7 direct flights from PSC to SEA every week

What is the cheapest airline that flies from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Delta is one of the cheapest airlines offering nonstop flights from Pasco (PSC) to Seattle (SEA), with round-trip tickets starting from around $124. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Pasco, WA (PSC) to Seattle, WA (SEA) will differ from traveler to traveler. If you like to fly early, Delta offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. United offers the most daily flights from PSC to SEA, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 4 nonstop flights per day from Tri-Cities (PSC) to Seattle - Tacoma Intl. (SEA). For more options, look at flights that include layovers.
What is the earliest flight from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Tri-Cities Airport (PSC) to Seattle-Tacoma International Airport (SEA) typically departs at around 5:00 AM, operated by American Airlines. This seasonal service is active in January and February, allowing you to maximize your time in Seattle. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the early morning, from 6am to 9am. About 37% of passengers prefer this time window. Many major carriers, including Alaska Airlines, United Airlines, and Delta, offer flights during this window. This timing is favored because it lets you make the most of your day in Seattle.
How long does it take to fly from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Direct flights from PSC to SEA usually take about 1 hour 20 minutes, traveling roughly 171 miles. If you opt for a connecting flight, expect to add around 8 hours 30 minutes to your journey. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
First class seats are offered on the PSC to SEA route. First class cabins are available on:

  • United Airlines
  • Delta Air Lines
  • American Airlines

How much is a business class flight from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A direct, return business class ticket from Pasco, WA (PSC) to Seattle, WA (SEA) typically costs between $403 - $768. A non-stop, one-way business class flight is usually around $303 - $453. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from Tri-Cities (PSC)?
If you're planning to travel to Seattle from Tri-Cities (PSC), you can fly into Seattle - Tacoma Intl. (SEA) Some flights may connect through major hubs like Salt Lake City Intl. (SLC), San Francisco Intl. (SFO), Denver Intl. (DEN) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) Seattle Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Pasco, WA (PSC-Tri-Cities) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Tri-Cities
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$225
Distance
171 mi
Average flight time
1 hour 8 mins

Book with confidence

Pasco to Seattle Flights

The cheapest times to fly from Pasco to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Pasco to Seattle are during the month of August. You can find some of the cheapest flights from Pasco to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Pasco to Seattle

Sunday is one of the best days to book for cheap flights from Pasco to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Pasco to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Pasco to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $124 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Pasco to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Pasco to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

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

 

Pasco to Seattle Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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