$218+ Cheap flights from Portland (PDX) to Saint Thomas Island (STT)
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 12/11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — STT
Oct 7 — Oct 141
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Saint Thomas Island with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Portland to Saint Thomas Island
Cheapest
Best
Last-minute
One-way
Cheapest flights from Portland to Saint Thomas IslandExplore the most affordable flight options available from Portland to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
Explore the most affordable flight options available from Portland to Saint Thomas Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/2410:55 pm -
2 stops13h 00m
Sat 10/313:58 pm -
2 stops24h 30m
Deal found 9/5![American Airlines logo]()
$440
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/3111:15 pm -
1 stop11h 23m
Tue 11/33:15 pm -
1 stop12h 44m
Deal found 9/5![American Airlines logo]()
$520
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/2411:30 pm -
1 stop11h 01m
Sat 10/3112:07 pm -
1 stop11h 08m
Deal found 9/6![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Mon 10/267:26 pm -
2 stops14h 30m
Thu 10/2912:07 pm -
2 stops15h 37m
Deal found 9/3![United Airlines logo]()
$559
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Fri 9/1811:08 pm -
2 stops14h 05m
Sat 9/264:53 pm -
2 stops21h 02m
Deal found 9/5![American Airlines logo]()
$619
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Mon 9/283:00 pm -
2 stops18h 51m
Sat 10/31:41 pm -
2 stops24h 18m
Deal found 9/5![American Airlines logo]()
$626
This American Airlines deal was found by Cheapflights users on 9/6. 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.
Fri 12/411:03 pm -
1 stop9h 14m
Thu 12/101:07 pm -
1 stop14h 52m
Deal found 9/6![American Airlines logo]()
$637
Best flights from Portland to Saint Thomas IslandDiscover carefully curated flight deals from Portland to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
Discover carefully curated flight deals from Portland to Saint Thomas Island that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/2411:30 pm -
1 stop11h 01m
Sat 10/3112:07 pm -
1 stop11h 08m
Deal found 9/6![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 9/4. 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.
Mon 10/267:26 pm -
2 stops14h 30m
Thu 10/2912:07 pm -
2 stops15h 37m
Deal found 9/4![United Airlines logo]()
$559
This United Airlines deal was found by Cheapflights users on 9/5. 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 1/67:49 pm -
2 stops16h 31m
Fri 1/85:25 pm -
2 stops24h 50m
Deal found 9/5![United Airlines logo]()
$680
Last-minute flights from Portland to Saint Thomas IslandDiscover last-minute flight deals from Portland to Saint Thomas Island. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Saint Thomas Island. Data last updated September 7, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Fri 9/1811:08 pm -
2 stops14h 05m
Sat 9/264:53 pm -
2 stops21h 02m
Deal found 9/5![American Airlines logo]()
$619
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Mon 9/283:00 pm -
2 stops18h 51m
Sat 10/31:41 pm -
2 stops24h 18m
Deal found 9/5![American Airlines logo]()
$626
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/2410:55 pm -
2 stops13h 00m
Sat 10/313:58 pm -
2 stops24h 30m
Deal found 9/5![American Airlines logo]()
$440
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/2411:30 pm -
1 stop11h 01m
Sat 10/3112:07 pm -
1 stop11h 08m
Deal found 9/6![United Airlines logo]()
$547
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Mon 10/267:26 pm -
2 stops14h 30m
Thu 10/2912:07 pm -
2 stops15h 37m
Deal found 9/3![United Airlines logo]()
$559
This American Airlines deal was found by Cheapflights users on 9/5. 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 10/3111:15 pm -
1 stop11h 23m
Tue 11/33:15 pm -
1 stop12h 44m
Deal found 9/5![American Airlines logo]()
$520
One-way flights from Portland to Saint Thomas IslandSearch for one-way flight options from Portland to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
Search for one-way flight options from Portland to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This United Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 12/117:21 pm -
2 stops15h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![United Airlines logo]()
$218
This Southwest deal was found by Cheapflights users on 9/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/137:00 pm -
2 stops15h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Southwest logo]()
$287
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Fri 12/1111:09 pm -
1 stop12h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/134:35 pm -
3 stops37h 39m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$473
This Kiwi.com deal was found by Cheapflights users on 9/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:45 pm -
3 stops34h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Multiple Airlines logo]()
$552
This American Airlines deal was found by Cheapflights users on 9/3. 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 12/1311:03 pm -
1 stop11h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![American Airlines logo]()
$589
Find flight deals from Portland to Saint Thomas Island
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Saint Thomas Island (STT). 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 September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $440 (Delta) |
One-way from | $218 (United Airlines) |
Popular in | October |
Cheapest in | September |
Average price | $518 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Saint Thomas Island 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 7,457,451 searches. Data last updated September 7, 2026.
Use the filters below to find and compare flights from Portland to Saint Thomas Island that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSaint Thomas Island
PDX Portland - STT Saint Thomas Island Cyril E King
PDXSTT
Portland
Fri 12/11
7:21 pm-2:31 pm
2 stops15h 10m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$218
PortlandSaint Thomas Island
PDX Portland - STT Saint Thomas Island Cyril E King
PDXSTT
Portland
Sun 12/13
7:00 pm-2:35 pm
2 stops15h 35m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$287
Quickest round-trip
PortlandSaint Thomas Island
PDX Portland - STT Saint Thomas Island Cyril E King
PDXSTT
Portland
Fri 12/11
11:09 pm-3:51 pm
1 stop12h 42m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$333
PortlandSaint Thomas Island
PDX Portland - STT Saint Thomas Island Cyril E King
PDXSTT
Portland
Sun 12/13
4:35 pm-10:14 am
3 stops37h 39m
Saint Thomas Island Cyril E King
Wed 12/31
12:00 am-8:00 pm
Nonstop0h 00m
$473
PortlandSaint Thomas Island
PDX Portland - STT Saint Thomas Island Cyril E King
PDXSTT
Portland
Sat 10/24
11:30 pm-1:31 pm
1 stop11h 01m
Saint Thomas Island Cyril E King
Sat 10/31
12:07 pm-8:15 pm
1 stop11h 08m
$547
PortlandSaint Thomas Island
PDX Portland - STT Saint Thomas Island Cyril E King
PDXSTT
Portland
Mon 10/26
7:26 pm-12:56 pm
2 stops14h 30m
Saint Thomas Island Cyril E King
Thu 10/29
12:07 pm-12:44 am
2 stops15h 37m
$559
PortlandSaint Thomas Island
PDX Portland - STT Saint Thomas Island Cyril E King
PDXSTT
Portland
Wed 1/6
7:49 pm-4:20 pm
2 stops16h 31m
Saint Thomas Island Cyril E King
Fri 1/8
5:25 pm-2:15 pm
2 stops24h 50m
$680
Sorted by cheapest first
Compare providers for flights from Portland to Saint Thomas Island
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Saint Thomas Island in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland-Saint Thomas Island flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Saint Thomas Island flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Saint Thomas Island flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland-Saint Thomas Island flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Saint Thomas Island flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Portland to Saint Thomas Island
Have a flexible travel schedule? Discover the best time to fly to Saint Thomas Island from Portland with our price prediction graph.
PDX-STT
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 Portland to Saint Thomas Island
Reviews of airlines servicing Saint Thomas Island
Get insights into the airlines that provide service to Saint Thomas Island. 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 Saint Thomas Island. Reviews last updated September 7, 2026.
Read through reviews of airlines operating flights from Portland to Saint Thomas Island, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Overall
7.4
Boarding
7.7
Entertainment
7.1
Food
6.6
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Comfort
7.3
Overall
7.4
Boarding
7.7
Entertainment
7.1
Food
6.6
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Comfort
7.3
Overall
7.4
Boarding
7.7
Entertainment
7.1
Food
6.6
Crew
8.1
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from Portland to Saint Thomas Island. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Saint Thomas Island?
Book flights to Saint Thomas Island if you plan to visit one of these locationsSt. John
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Alternative routes for Portland to Saint Thomas Island
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Complete your trip
Complete your trip to Saint Thomas Island by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Portland to Saint Thomas Island, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Saint Thomas Island flights
Browse other Portland and Saint Thomas Island flight options. Last updated on September 7, 2026.
Other flights from Portland
Browse through other flights departing from Portland. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.
Popular flight searches
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Other flights to Saint Thomas Island
Explore flights to Saint Thomas Island departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 7, 2026.
Top 2 airlines flying from Portland to Saint Thomas Island
Discover the top 2 airlines that operate flights from Portland to Saint Thomas Island. 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 7,457,451 searches. Data last updated September 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$510 | Average$708 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$559 | Average$1,050 | FlexibilityNo cancel fee | On-time69% |