What are the cheapest airlines flying from Portland to Saint Thomas Island round-trip?

Flying on Spirit Airlines is currently your cheapest option to Saint Thomas Island, with prices starting at $376. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $539 and $589, respectively. Spirit Airlines is priced at 47% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Portland to Saint Thomas Island one-way?

$240 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $248 and $453, respectively.

What is the cheapest day to fly from Portland to Saint Thomas Island?

Travelers seeking maximum savings on their Portland to Saint Thomas Island flight should consider departing on Tuesday mornings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Portland to Saint Thomas Island?

Consider American Airlines, Delta or Spirit Airlines when booking your flight. These represent the most popular airlines when flying from Portland to Saint Thomas Island.

What is the cheapest day to fly round-trip from Portland to Saint Thomas Island?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 42% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Portland to Saint Thomas Island?

Find a great deal and save up to 147% by booking at least 33 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Portland to Saint Thomas Island within the next two weeks, with the cheapest ticket starting at $388.

What is the cheapest month to fly from Portland to Saint Thomas Island?

Our data shows that August tends to be the cheapest month to fly to Saint Thomas Island from Portland. Users have commonly found prices around $717 for the month, but tickets can be as low as $268. Due to multiple factors, prepare for potentially higher prices in December.

Most accurate provider : When it comes to deals on Portland-Saint Thomas Island flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Portland-Saint Thomas Island flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

Can I find deals for flights from Portland to Saint Thomas Island that include hotel bookings?

Yes. In addition to deals on Portland to Saint Thomas Island flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portland to Saint Thomas Island?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Saint Thomas Island.

Can I find deals for business class flights from Portland to Saint Thomas Island?

Yes. Cheapflights offers flight deals from Portland to Saint Thomas Island by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$240+ Flights from Portland to Saint Thomas Island - Compare & Save Big

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1. Tell us where you want to go

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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.

Cheapflights Tip: The best prices from Portland to Saint Thomas Island Cyril E King are usually found in August or September, booked 32 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Portland to Saint Thomas Island

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$376 (Booking.com)
One-way from	$240 (FlightHub)
Popular in	December
Cheapest in	August
Average price	$783

Provider with most accurate pricing for Portland-Saint Thomas Island Cyril E King flight deals.

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Provider most trusted by Cheapflights users for Portland-Saint Thomas Island Cyril E King flights.

Search Deals

From Portland to Saint Thomas Island Cyril E King

Search Deals

One-way flight from Portland to Saint Thomas Island Cyril E King

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($46 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

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Find flight deals from Portland to Saint Thomas Island

Cheapest flights from Portland to Saint Thomas Island
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 April 30, 2025.

Mon 5/261:37 pmPDX - STT

2 stops17h 20mSpirit Airlines

Sun 6/110:52 amSTT - PDX

2 stops28h 50mSpirit Airlines

Deal found 4/28

$469

Fri 8/16:43 pmPDX - STT

2 stops14h 36mUnited Airlines

Thu 8/71:19 pmSTT - PDX

1 stop12h 14mUnited Airlines

Deal found 4/28

$589

Tue 7/85:50 pmPDX - STT

2 stops18h 10mDelta

Tue 7/151:27 pmSTT - PDX

1 stop13h 32mDelta

Deal found 4/28

$609

Thu 8/289:52 pmPDX - STT

1 stop10h 13mAmerican Airlines

Sun 9/71:50 pmSTT - PDX

2 stops23h 15mAmerican Airlines

Deal found 4/28

$629

Fri 11/76:59 pmPDX - STT

2 stops14h 12mMultiple Airlines

Wed 11/1210:25 amSTT - PDX

2 stops16h 19mMultiple Airlines

Deal found 4/28

$695

Best flights from Portland to Saint Thomas Island
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 April 30, 2025.

Wed 6/45:40 pmPDX - STT

2 stops13h 17mSpirit Airlines

Wed 6/1110:52 amSTT - PDX

2 stops27h 25mSpirit Airlines

Deal found 4/29

$376

Tue 6/36:07 pmPDX - STT

2 stops17h 41mAmerican Airlines

Tue 6/101:44 pmSTT - PDX

2 stops12h 14mAmerican Airlines

Deal found 4/29

$539

Fri 8/110:55 pmPDX - STT

1 stop12h 59mUnited Airlines

Thu 8/71:19 pmSTT - PDX

1 stop12h 14mUnited Airlines

Deal found 4/28

$589

Tue 7/85:50 pmPDX - STT

2 stops18h 10mDelta

Tue 7/151:27 pmSTT - PDX

1 stop13h 32mDelta

Deal found 4/28

$609

Last-minute flights from Portland to Saint Thomas Island
Discover last-minute flight deals from Portland to Saint Thomas Island. Data last updated April 30, 2025 and is based on user searches.

Sun 5/411:02 amPDX - STT

2 stops19h 58mSpirit Airlines

Fri 5/92:41 pmSTT - PDX

2 stops25h 01mSpirit Airlines

Deal found 4/27

$562

Sun 5/411:19 pmPDX - STT

1 stop11h 30mDelta

Fri 5/92:51 pmSTT - PDX

1 stop9h 53mDelta

Deal found 4/27

$651

Mon 5/261:37 pmPDX - STT

2 stops17h 20mSpirit Airlines

Sun 6/110:52 amSTT - PDX

2 stops28h 50mSpirit Airlines

Deal found 4/28

$469

Mon 5/2610:24 pmPDX - STT

1 stop14h 56mAmerican Airlines

Sun 6/15:10 pmSTT - PDX

2 stops20h 39mAmerican Airlines

Deal found 4/28

$921

One-way flights from Portland to Saint Thomas Island
Search for one-way flight options from Portland to Saint Thomas Island. Find affordable one-way fares based on user searches. Data last updated April 30, 2025.

Wed 6/1812:12 pmPDX - STT

2 stops18h 36mSpirit Airlines

Deal found 4/29

$240

Mon 6/165:50 pmPDX - STT

2 stops15h 24mDelta

Deal found 4/28

$248

Wed 6/1811:59 pmPDX - STT

1 stop12h 44mUnited Airlines

Deal found 4/27

$453

Tue 6/1712:09 amPDX - STT

2 stops12h 51mAmerican Airlines

Deal found 4/27

$478

Cheapflights Fare Finder

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

Price

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Mon 5/26

1:37 pm-9:57 am

2 stops17h 20m

Saint Thomas Island Cyril E King

Sun 6/1

10:52 am-12:42 pm

2 stops28h 50m

$469

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Fri 8/1

6:43 pm-12:19 pm

2 stops14h 36m

Saint Thomas Island Cyril E King

Thu 8/7

1:19 pm-10:33 pm

1 stop12h 14m

$589

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Tue 7/8

5:50 pm-3:00 pm

2 stops18h 10m

Saint Thomas Island Cyril E King

Tue 7/15

1:27 pm-11:59 pm

1 stop13h 32m

$609

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Thu 8/28

9:52 pm-11:05 am

1 stop10h 13m

Saint Thomas Island Cyril E King

Sun 9/7

1:50 pm-10:05 am

2 stops23h 15m

$629

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Mon 6/16

5:50 pm-12:14 pm

2 stops15h 24m

$248

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Wed 6/18

12:12 pm-9:48 am

2 stops18h 36m

$285

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Wed 6/18

11:59 pm-3:43 pm

1 stop12h 44m

$453

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Tue 6/17

12:09 am-4:00 pm

2 stops12h 51m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Compare providers for flights from Portland to Saint Thomas Island

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 April.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
CheapOair	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Portland-Saint Thomas Island flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Portland-Saint Thomas Island flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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.

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

How far ahead should I book a flight from Portland to Saint Thomas Island?

The price you pay for your flight from Portland to Saint Thomas Island may vary depending on when you book. For the best chance of a lower fare, look to book 32 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Portland to Saint Thomas Island?

Currently, September is the cheapest month in which you can book a flight from Portland to Saint Thomas Island (average of $432). Flying from Portland to Saint Thomas Island in June is currently the most expensive (average of $627). 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.

What is the cheapest time of day to fly from PDX to STT?

When flying from Portland to Saint Thomas Island, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 45% versus a flight in the evening.

Reviews of airlines servicing Saint Thomas Island

Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Portland to Saint Thomas Island by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,936 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,936 reviews

Delta

8.0

Very good

7,936 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,936 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,936 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Spirit Airlines

6.3

Okay

7,961 reviews

Delta

8.0

Very good

7,936 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Portland to Saint Thomas Island round-trip?
Flying on Spirit Airlines is currently your cheapest option to Saint Thomas Island, with prices starting at $376. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $539 and $589, respectively. Spirit Airlines is priced at 47% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Portland to Saint Thomas Island one-way?
$240 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $248 and $453, respectively.
Can I find deals for flights from Portland to Saint Thomas Island that include hotel bookings?
Yes. In addition to deals on Portland to Saint Thomas Island flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portland to Saint Thomas Island?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Saint Thomas Island.
Can I find deals for business class flights from Portland to Saint Thomas Island?
Yes. Cheapflights offers flight deals from Portland to Saint Thomas Island 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 Portland to Saint Thomas Island?
Currently, September is the cheapest month in which you can book a flight from Portland to Saint Thomas Island (average of $432). Flying from Portland to Saint Thomas Island in June is currently the most expensive (average of $627). 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

St. John

Browse thousands of different options on Cheapflights for your next trip

Top 4 airlines flying from Portland to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
Spirit Airlines	Cheapest$213	Average$363	FlexibilityNo cancel fee	On-time65%
United Airlines	Cheapest$276	Average$681	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$421	Average$681	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$437	Average$736	FlexibilityNo cancel fee	On-time71%

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$240+ Cheap flights from Portland (PDX) to Saint Thomas Island (STT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/18. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Saint Thomas Island with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Portland to Saint Thomas Island Cyril E King are usually found in August or September, booked 32 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Portland to Saint Thomas Island

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to Saint Thomas Island

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 April 30, 2025.

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 April 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Saint Thomas Island that are best for you.

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 April.

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.

Cheapflights Insights

Everything you need to know about your flight from Portland to Saint Thomas Island

How far ahead should I book a flight from Portland to Saint Thomas Island?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Saint Thomas Island. Price data was last updated on April 25, 2025.

What is the cheapest month to book a flight from Portland to Saint Thomas Island?

What is the cheapest time of day to fly from PDX to STT?

Find hourly flight availability from Portland to Saint Thomas Island. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

Reviews of airlines servicing Saint Thomas Island

Get a feel of what it's like to fly with Delta, United Airlines and American Airlines from Portland to Saint Thomas Island by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

What are the cheapest airlines flying from Portland to Saint Thomas Island round-trip?

What are the cheapest airlines to fly from Portland to Saint Thomas Island one-way?

Can I find deals for flights from Portland to Saint Thomas Island that include hotel bookings?

How can I find direct flights from Portland to Saint Thomas Island?

Can I find deals for business class flights from Portland to Saint Thomas Island?

What is the cheapest month to book a flight from Portland to Saint Thomas Island?

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Top 4 airlines flying from Portland to Saint Thomas Island

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Cheapest flights from Portland to Saint Thomas Island
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 April 30, 2025.