£103 Cheap Flights from Seattle (SEA) to Pasco (PSC)

View £103 flight on Tue, 2 Jun 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at £103 for one-way flights and £173 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, 23 May - Tue, 26 May
SEA
Seattle
PSC
Pasco
£173 Return, found 6 days ago
£173
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to Pasco, returning Tue, 26 May, priced at £173 found 6 days ago
Alaska Airlines
Sat, 23 May - Tue, 26 May
SEA
Seattle
PSC
Pasco
£198 Return, found 6 days ago
£198
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to Pasco, returning Tue, 26 May, priced at £198 found 6 days ago
Alaska Airlines
Mon, 15 Jun - Mon, 22 Jun
SEA
Seattle
PSC
Pasco
£206 Return, found 1 day ago
£206
Return
found 1 day ago
Select Alaska Airlines flight, departing Mon, 15 Jun from Seattle to Pasco, returning Mon, 22 Jun, priced at £206 found 1 day ago
Alaska Airlines
Sat, 23 May - Tue, 26 May
SEA
Seattle
PSC
Pasco
£214 Return, found 6 days ago
£214
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to Pasco, returning Tue, 26 May, priced at £214 found 6 days ago
Alaska Airlines
Sat, 23 May - Tue, 26 May
SEA
Seattle
PSC
Pasco
£220 Return, found 6 days ago
£220
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to Pasco, returning Tue, 26 May, priced at £220 found 6 days ago
Alaska Airlines
Sat, 23 May - Tue, 26 May
SEA
Seattle
PSC
Pasco
£235 Return, found 6 days ago
£235
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to Pasco, returning Tue, 26 May, priced at £235 found 6 days ago
Alaska Airlines
Fri, 12 Jun - Fri, 19 Jun
SEA
Seattle
PSC
Pasco
£237 Return, found 1 day ago
£237
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 12 Jun from Seattle to Pasco, returning Fri, 19 Jun, priced at £237 found 1 day ago
Alaska Airlines
Mon, 15 Jun - Mon, 22 Jun
SEA
Seattle
PSC
Pasco
£250 Return, found 1 day ago
£250
Return
found 1 day ago
Select Alaska Airlines flight, departing Mon, 15 Jun from Seattle to Pasco, returning Mon, 22 Jun, priced at £250 found 1 day ago
Alaska Airlines
Sat, 23 May - Tue, 26 May
SEA
Seattle
PSC
Pasco
£250 Return, found 6 days ago
£250
Return
found 6 days ago
Select Alaska Airlines flight, departing Sat, 23 May from Seattle to Pasco, returning Tue, 26 May, priced at £250 found 6 days ago
Alaska Airlines
Mon, 15 Jun - Mon, 22 Jun
SEA
Seattle
PSC
Pasco
£253 Return, found 1 day ago
£253
Return
found 1 day ago
Select Alaska Airlines flight, departing Mon, 15 Jun from Seattle to Pasco, returning Mon, 22 Jun, priced at £253 found 1 day ago

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) cost?
One-way flights typically cost between £325 and £1,408 and return flights often range between £212 and £1,039. 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 Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
April is typically the cheapest month to fly from Seattle - Tacoma Intl. (SEA) to Tri-Cities (PSC), with average return fares of approximately £218. This is about 22% lower than the average price throughout the year. April often sees lower prices as it's outside of peak holiday travel seasons, leading to reduced demand. Other cheap months to fly from Seattle - Tacoma Intl. (SEA) to Tri-Cities (PSC) include January and August.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
Enter SEA to PSC and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities), 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
The best airline to fly with from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) will differ from traveller to traveller. If you like to fly early, DL offers early morning flights. If price is the most important factor, DL typically offers the lowest fares. AS offers the most daily flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities), which is brilliant 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
When looking for the best time to fly from Seattle - Tacoma Intl. (SEA) to Pasco (PSC), it's a balance between price and flight availability. Based on booking data from the past year, the cheapest months to fly are typically April and January. However, the most popular months for travel are December and August, which means you'll find plenty of flight options during those times. Since there isn't a single month that is both cheapest and most popular, you might consider flying in April or January for the best value, or in December or August if having a wide selection of flights is your top priority.
How many flights per day from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
There are approximately 4 nonstop flights per day from Seattle - Tacoma Intl. (SEA) to Tri-Cities (PSC). For even more choice, look at flights that include layovers, as there are around 12 connecting flights per day. Some common connection points include San Francisco Intl. (SFO), Denver Intl. (DEN), and Portland Intl. (PDX).
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
The earliest flight from Seattle - Tacoma Intl. (SEA) to Tri-Cities (PSC) typically departs at approximately 5:00 AM local time, operated by United Airlines. This is a seasonal service active in May. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
You'll typically find the most flights from Seattle - Tacoma Intl. (SEA) to Tri-Cities (PSC) on a Friday, with around 14 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Alaska Airlines, United Airlines, and Delta Air Lines. Flight schedules are consistent throughout the week, so you'll have a good selection of flights no matter which day you choose.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
The most popular departure times for flights from Seattle - Tacoma Intl. (SEA) to Tri-Cities (PSC) are in the afternoon, from 3pm to 6pm. Approximately 22% of passengers prefer this time window. Many major carriers, including Alaska Airlines, Delta Air Lines and United Airlines, offer flights during this window. This timing works well because it allows you to have a productive morning before your flight and arrive at your destination in the early evening.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
Flying nonstop from SEA to PSC takes around 1 hour 20 minutes, with the route covering approximately 171 miles. Flights with a layover typically take 6 hours 40 minutes longer than direct options. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
Select the "Business class" and "First class" filters when looking for SEA to PSC flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) 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 Pasco from Seattle - Tacoma Intl. (SEA)?
From Seattle - Tacoma Intl. (SEA), you can fly directly into Tri-Cities (PSC) to reach Pasco. Some flights may connect through major hubs like Rogue Valley Intl. (MFR), San Francisco Intl. (SFO), Portland Intl. (PDX) before reaching Pasco. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) flight and hotel package 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Pasco, WA (PSC-Tri-Cities) 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
Seattle - Tacoma Intl.
Destination airport
Tri-Cities
Airlines serving
Alaska Airlines
Return price
£172
Distance
274 km
Average flight time
1 hour 5 mins

Book with confidence

Compare flights from Seattle to Pasco easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seattle to Pasco. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Tri-Cities in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Seattle - Tacoma Intl. to Tri-Cities.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Seattle - Tacoma Intl. (SEA) to Tri-Cities (PSC)

The easiest way to view the best deals on flights from Seattle to Pasco today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Seattle - Tacoma Intl. to Tri-Cities start at just £173 and range up to £253.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seattle and Pasco
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seattle to Pasco flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Seattle - Tacoma Intl. to Tri-Cities for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Seattle to Pasco easily and book with confidence

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*Available to Expedia members.