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$574+ Cheap flights from Port of Spain (POS) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
POS — SEA
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Port of Spain to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Port of Spain (POS) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 18, 2025.

Round-trip from

$574
(United Airlines)

Popular in

November

Cheapest in

February

Average price

$750
From Port of Spain Piarco Intl to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 1% potential increase in price ($12 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Port of Spain to Seattle

Cheapest flights from Port of Spain to Seattle
Explore the most affordable flight options available from Port of Spain to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:30 amPOS - SEA
1 stop15h 16mUnited Airlines
Sun 9/2111:58 pmSEA - POS
1 stop20h 25mUnited Airlines
Deal found 8/17$574
This United Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1012:30 amPOS - SEA
2 stops24h 45mUnited Airlines
Mon 9/221:05 pmSEA - POS
2 stops31h 18mUnited Airlines
Deal found 8/17$578
This American Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/127:00 amPOS - SEA
1 stop19h 35mAmerican Airlines
Wed 10/158:49 pmSEA - POS
1 stop14h 36mAmerican Airlines
Deal found 8/15$579
This United Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1112:30 amPOS - SEA
1 stop21h 46mUnited Airlines
Wed 10/157:05 amSEA - POS
1 stop13h 18mUnited Airlines
Deal found 8/15$630
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:30 amPOS - SEA
2 stops27h 29mUnited Airlines
Sun 12/287:05 amSEA - POS
2 stops37h 18mUnited Airlines
Deal found 8/16$631
This American Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/117:00 amPOS - SEA
1 stop19h 35mAmerican Airlines
Tue 10/148:49 pmSEA - POS
1 stop14h 36mAmerican Airlines
Deal found 8/16$666
This United Airlines deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/201:30 amPOS - SEA
2 stops27h 29mUnited Airlines
Mon 12/2911:59 pmSEA - POS
1 stop20h 24mUnited Airlines
Deal found 8/16$668
This American Airlines deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/103:25 pmPOS - SEA
2 stops23h 49mAmerican Airlines
Sun 9/215:24 pmSEA - POS
2 stops17h 52mAmerican Airlines
Deal found 8/17$693

Cheapflights Fare Finder

 
Customize your flight search to find flights from Port of Spain to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Port of Spain to Seattle that are best for you.

Fly from

Port of Spain

Fly to

Seattle

Route

Depart

Return

Price

Port of SpainSeattle

POS - SEA

POSSEA

Port of Spain Piarco Intl

Wed 9/10

12:30 am-12:46 pm

1 stop15h 16m

Seattle/Tacoma Intl

Mon 9/22

11:58 pm-11:23 pm

1 stop20h 25m

$574

Port of SpainSeattle

POS - SEA

POSSEA

Port of Spain Piarco Intl

Sat 10/11

7:00 am-11:35 pm

1 stop19h 35m

Seattle/Tacoma Intl

Tue 10/14

8:49 pm-2:25 pm

1 stop14h 36m

$574

Port of SpainSeattle

POS - SEA

POSSEA

Port of Spain Piarco Intl

Tue 9/9

12:30 am-5:31 pm

1 stop20h 01m

Seattle/Tacoma Intl

Sun 9/21

11:58 pm-11:23 pm

1 stop20h 25m

$574

Port of SpainSeattle

POS - SEA

POSSEA

Port of Spain Piarco Intl

Sat 12/20

1:30 am-12:59 am

2 stops27h 29m

Seattle/Tacoma Intl

Mon 12/29

5:02 am-12:23 am

2 stops39h 21m

$574

Port of SpainSeattle

POS - SEA

POSSEA

Port of Spain Piarco Intl

Wed 9/10

12:30 am-12:46 pm

1 stop15h 16m

Seattle/Tacoma Intl

Sun 9/21

11:58 pm-11:23 pm

1 stop20h 25m

$574

Port of SpainSeattle

POS - SEA

POSSEA

Port of Spain Piarco Intl

Fri 10/10

12:30 am-7:16 pm

1 stop21h 46m

Seattle/Tacoma Intl

Tue 10/14

11:10 pm-11:23 pm

1 stop21h 13m

$574

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Best time to book a flight from Port of Spain to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Port of Spain with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Port of Spain to Seattle

What is the cheapest month to book a flight from Port of Spain to Seattle?

Currently, January is the cheapest month in which you can book a flight from Port of Spain to Seattle (average of $238). Flying from Port of Spain to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated August 18, 2025.
Read through reviews of airlines operating flights from Port of Spain to Seattle, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,925 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Boarding

7.7

Overall

7.4

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

Related info for your journey

Find useful and relevant information for your journey from Port of Spain to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What is the cheapest airline to fly from Port of Spain to Seattle round-trip?

    Our cheapest airline available from Port of Spain to Seattle is United Airlines. Our recent data shows that you can find tickets from as low as $617 on this airline. United Airlines is priced at 21% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Port of Spain to Seattle that include hotel bookings?

    Yes. In addition to deals on Port of Spain to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Port of Spain to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Port of Spain to Seattle.

  • Can I find deals for business class flights from Port of Spain to Seattle?

    Yes. Cheapflights offers flight deals from Port of Spain to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Port of Spain to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Port of Spain to Seattle (average of $238). Flying from Port of Spain to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Port of Spain to Seattle

Discover the top airline that operate flights from Port of Spain to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$617Average$718FlexibilityNo cancel feeOn-time69%

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