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Tri Cities Airport to Seattle-Tacoma International Airport flight

Explore the cheapest one-way and round-trip flights from Tri Cities Airport to Seattle-Tacoma International Airport over the next 90 days, with one-way fares from €78 and round-trip from €97. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        PSC 18:00
        1h 12m
        Nonstop
        SEA 19:12
        Pasco - Seattle | Wed, Oct 21 | Alaska Airlines
        SEA 09:05
        1h 5m
        Nonstop
        PSC 10:10
        Seattle - Pasco | Wed, Oct 28 | Alaska Airlines
        €97 €308
        69% off
        69% off
        €308 €97
      • PSC 15:38
        1h 12m
        Nonstop
        SEA 16:50
        Pasco - Seattle | Sat, Oct 3 | Delta Air Lines
        SEA 10:40
        1h 16m
        Nonstop
        PSC 11:56
        Seattle - Pasco | Sun, Oct 4 | Delta Air Lines
        €98 €308
        68% off
        68% off
        €308 €98
      • PSC 05:25
        1h 13m
        Nonstop
        SEA 06:38
        Pasco - Seattle | Fri, Oct 2 | Delta Air Lines
        SEA 22:45
        1h 9m
        Nonstop
        PSC 23:54
        Seattle - Pasco | Mon, Oct 5 | Delta Air Lines
        €98 €308
        68% off
        68% off
        €308 €98
      • PSC 15:32
        1h 13m
        Nonstop
        SEA 16:45
        Pasco - Seattle | Sat, Nov 7 | Delta Air Lines
        SEA 10:39
        1h 9m
        Nonstop
        PSC 11:48
        Seattle - Pasco | Thu, Nov 12 | Delta Air Lines
        €98
        68% off
        €308 €98
      • PSC 15:30
        1h 15m
        Nonstop
        SEA 16:45
        Pasco - Seattle | Wed, Oct 21 | Delta Air Lines
        SEA 22:52
        1h 7m
        Nonstop
        PSC 23:59
        Seattle - Pasco | Wed, Oct 28 | Delta Air Lines
        €116
        62% off
        €308 €116
      • PSC 10:56
        1h 14m
        Nonstop
        SEA 12:10
        Pasco - Seattle | Fri, Oct 2 | Alaska Airlines
        SEA 09:05
        1h 5m
        Nonstop
        PSC 10:10
        Seattle - Pasco | Mon, Oct 5 | Alaska Airlines
        €133
        56% off
        €308 €133
      • PSC 15:30
        1h 15m
        Nonstop
        SEA 16:45
        Pasco - Seattle | Mon, Oct 26 | Delta Air Lines
        SEA 10:49
        1h 13m
        Nonstop
        PSC 12:02
        Seattle - Pasco | Thu, Oct 29 | Delta Air Lines
        €152
        51% off
        €308 €152
      • PSC 12:35
        1h 18m
        Nonstop
        SEA 13:53
        Pasco - Seattle | Fri, Nov 13 | Delta Air Lines
        SEA 22:55
        1h 4m
        Nonstop
        PSC 23:59
        Seattle - Pasco | Mon, Nov 16 | Delta Air Lines
        €178
        42% off
        €308 €178
      • PSC 13:55
        1h 4m
        Nonstop
        SEA 14:59
        Pasco - Seattle | Thu, Oct 15 | Alaska Airlines
        SEA 16:17
        1h 6m
        Nonstop
        PSC 17:23
        Seattle - Pasco | Thu, Oct 22 | Alaska Airlines
        €209
        32% off
        €308 €209
      • PSC 12:42
        1h 18m
        Nonstop
        SEA 14:00
        Pasco - Seattle | Sun, Oct 11 | Delta Air Lines
        SEA 10:49
        1h 13m
        Nonstop
        PSC 12:02
        Seattle - Pasco | Sun, Oct 18 | Delta Air Lines
        €215
        30% off
        €308 €215
      • PSC 15:25
        1h 16m
        Nonstop
        SEA 16:41
        Pasco - Seattle | Thu, Oct 1 | Delta Air Lines
        SEA 22:52
        1h 7m
        Nonstop
        PSC 23:59
        Seattle - Pasco | Thu, Oct 8 | Delta Air Lines
        €216
        30% off
        €308 €216
      • PSC 05:25
        1h 13m
        Nonstop
        SEA 06:38
        Pasco - Seattle | Sun, Oct 4 | Delta Air Lines
        SEA 13:36
        1h 14m
        Nonstop
        PSC 14:50
        Seattle - Pasco | Sun, Oct 11 | Delta Air Lines
        €218
        28% off
        €308 €218
      • PSC 13:00
        17h 25m
        1 stop
        SEA 14:00
        Pasco - Seattle | Sat, Sep 26 | Normal Airline
        SEA 15:00
        6h
        Nonstop
        PSC 16:00
        Seattle - Pasco | Mon, Sep 28 | Normal Airline
        More cheap flights
        More cheap flights
      • Cheapest nonstop
        PSC 15:30
        1h 15m
        Nonstop
        SEA 16:45
        Pasco - Seattle | Tue, Oct 13 | Delta Air Lines
        €78 €212
        63% off
        63% off
        €212 €78
      • PSC 15:30
        1h 15m
        Nonstop
        SEA 16:45
        Pasco - Seattle | Wed, Oct 7 | Delta Air Lines
        €134 €212
        37% off
        37% off
        €212 €134
      • PSC 15:30
        1h 15m
        Nonstop
        SEA 16:45
        Pasco - Seattle | Thu, Oct 8 | Delta Air Lines
        €135 €212
        36% off
        36% off
        €212 €135
      • PSC 17:34
        1h 13m
        Nonstop
        SEA 18:47
        Pasco - Seattle | Tue, Nov 10 | Alaska Airlines
        €145
        32% off
        €212 €145
      • PSC 18:00
        1h 12m
        Nonstop
        SEA 19:12
        Pasco - Seattle | Thu, Oct 8 | Alaska Airlines
        €145
        32% off
        €212 €145
      • PSC 05:20
        1h 21m
        Nonstop
        SEA 06:41
        Pasco - Seattle | Mon, Oct 12 | Delta Air Lines
        €148
        30% off
        €212 €148
      • PSC 11:02
        1h 14m
        Nonstop
        SEA 12:16
        Pasco - Seattle | Mon, Nov 9 | Alaska Airlines
        €148
        30% off
        €212 €148
      • PSC 15:33
        1h 12m
        Nonstop
        SEA 16:45
        Pasco - Seattle | Tue, Nov 10 | Delta Air Lines
        €150
        28% off
        €212 €150
      • PSC 05:20
        5h 19m
        1 stop
        SEA 10:39
        Pasco - Seattle | Wed, Oct 7 | Alaska Airlines
        €109
        49% off
        €212 €109
      • PSC 05:20
        3h 50m
        1 stop
        SEA 09:10
        Pasco - Seattle | Sun, Oct 18 | Alaska Airlines
        €119
        44% off
        €212 €119
      • PSC 05:20
        5h 19m
        1 stop
        SEA 10:39
        Pasco - Seattle | Mon, Oct 12 | Alaska Airlines
        €141
        33% off
        €212 €141
      • PSC 05:20
        5h 19m
        1 stop
        SEA 10:39
        Pasco - Seattle | Fri, Oct 30 | Alaska Airlines
        €145
        32% off
        €212 €145
      • PSC 13:00
        17h 25m
        1 stop
        SEA 14:00
        Pasco - Seattle | Sat, Sep 26 | Normal Airline
        More cheap flights
        More cheap flights

Displayed flight fares from Tri Cities Airport to Seattle-Tacoma International Airport are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Which airline offers the cheapest flights from Tri Cities Airport to Seattle-Tacoma International Airport?

The cheapest airline flying from Tri Cities Airport to Seattle-Tacoma International Airport is Delta Air Lines (from €78) among 4 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Delta Air Lines
From €78
Alaska Airlines
From €109
American Airlines
From €205
United Airlines
From €312

Find more flights and airlines

What is the flight schedule from Tri Cities Airport to Seattle-Tacoma International Airport?

Check on the flight schedule from Pasco to Seattle to find the flight that matches your travel plan.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA7581

    Tri Cities Airport

    06:12

    PSC

    1h 8m

    07:20

    SEA

    S M T W T F S
    Search

  2. DL3891

    Tri Cities Airport

    15:25

    PSC

    1h 16m

    16:41

    SEA

    S M T W T F S
    Search

  3. AS3378

    Tri Cities Airport

    17:29

    PSC

    1h 15m

    18:44

    SEA

    S M T W T F S
    Search

  4. DL3992

    Tri Cities Airport

    12:36

    PSC

    1h 15m

    13:51

    SEA

    S M T W T F S
    Search

  5. DL3972

    Tri Cities Airport

    06:30

    PSC

    1h 16m

    07:46

    SEA

    S M T W T F S
    Search
Find more flights and airlines

About Tri Cities Airport and Seattle-Tacoma International Airport

Learn about Tri Cities Airport (PSC) and Seattle-Tacoma International Airport (SEA) — including location, terminals, transportation, and travel tips.

Flight distance 276.09 km
Cheapest one-way ticket price €78
Cheapest return ticket price €97

FAQs for Tri Cities Airport to Seattle-Tacoma International Airport Flights

  • How long is the flight from Tri Cities Airport to Seattle-Tacoma International Airport?

    Tri Cities Airport to Seattle-Tacoma International Airport takes about 40 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 8 daily flights from Tri Cities Airport (PSC) to Seattle-Tacoma International Airport (SEA).
  • The earliest flight from Tri Cities Airport to Seattle-Tacoma International Airport departs at 05:25, and the last departs at 17:29, with about 8 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Tri Cities Airport (PSC) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around €306 in September, the most expensive month to book this route.
  • The earliest flight departs from Tri Cities Airport at 06:00 and arrives in Seattle-Tacoma International Airport at 07:09.
  • The latest flight departs from Tri Cities Airport at 17:45 and arrives in Seattle-Tacoma International Airport at 18:59.
    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km, by taxi about 30 minutes.
  • Delta Air Lines is a very popular airline operating an average of 116 flights per month.
  • One-way flights from Tri Cities Airport to Seattle-Tacoma International Airport currently start from €78, and round-trip fares start from €97. The current lowest fare is a Delta Air Lines flight departing on Tue, Oct 13; prices may vary depending on availability.
  • Yes. Alaska Airlines and Delta Air Lines operate direct flights from Tri Cities Airport to Seattle-Tacoma International Airport, with an average flight time of 38 minutes, and around 56 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Tri Cities Airport to Seattle-Tacoma International Airport is €259. Prices may vary depending on the departure date, airline, and availability.
  • WestJet are the most popular budget airlines flying from Tri Cities Airport to Seattle-Tacoma International Airport, with one-way fares starting from €78. Compare final prices carefully, as baggage, seat selection and payment fees may apply.
  • Tri Cities Airport to Seattle-Tacoma International Airport operates around 56 weekly flights, mainly by Alaska Airlines and Delta Air Lines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Tri Cities Airport and Seattle-Tacoma International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

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Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

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Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.