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

According to our current data, American Airlines ($439), Delta ($518), and United Airlines ($738) offers the cheapest pricing from Portland, Maine to Saint Thomas Island. You may be able to fly from Portland, Maine to Saint Thomas Island for 33% less than the average price by searching for these airlines.

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

Travelers seeking maximum savings on their Portland, Maine to Saint Thomas Island flight should consider departing on Tuesday mornings when fares are most often at their lowest. Friday 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, Maine to Saint Thomas Island?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Portland, Maine to Saint Thomas Island.

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

Flying to your destination on a Thursday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Saint Thomas Island. Check prices with Cheapflights to find a great deal for your trip.

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

To save on the cost of your flight from Portland, Maine to Saint Thomas Island, book at least 52 days before your planned departure. Booking around this time can save you about 52% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $627 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $727.

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

Flights from Portland, Maine to Saint Thomas Island lean towards being more expensive in February. Prices are generally better when you fly from Portland, Maine to Saint Thomas Island in September, with the cheapest ticket starting at $451.

Most accurate provider : When it comes to deals on Portland, Maine-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, Maine-Saint Thomas Island flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Portland, Maine-Saint Thomas Island flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Portland, Maine-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, Maine-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.

$333+ Flights from Portland, ME to Saint Thomas Island

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1. Tell us where you want to go

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Cheap flight deals from Portland to Saint Thomas Island

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$439 (American Airlines)
One-way from	$333 (United Airlines)
Popular in	February
Cheapest in	September
Average price	$753

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.

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From Portland to Saint Thomas Island Cyril E King

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

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Highest demand for flights based on searches. 1% potential increase in price ($8 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).

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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 24, 2025.

Sat 8/26:01 pmPWM - STT

1 stop16h 44mAmerican Airlines

Tue 8/54:00 pmSTT - PWM

2 stops20h 05mAmerican Airlines

Deal found 4/23

$439

Fri 5/95:30 amPWM - STT

1 stop9h 40mDelta

Sat 5/174:20 pmSTT - PWM

1 stop7h 54mDelta

Deal found 4/23

$518

Sat 8/96:00 amPWM - STT

1 stop7h 08mUnited Airlines

Tue 8/124:45 pmSTT - PWM

1 stop7h 14mUnited Airlines

Deal found 4/23

$738

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 24, 2025.

Sat 8/26:01 pmPWM - STT

1 stop16h 44mAmerican Airlines

Tue 8/54:00 pmSTT - PWM

2 stops20h 05mAmerican Airlines

Deal found 4/23

$439

Fri 5/95:30 amPWM - STT

1 stop9h 40mDelta

Sat 5/174:20 pmSTT - PWM

1 stop7h 54mDelta

Deal found 4/23

$518

Sat 8/96:00 amPWM - STT

1 stop7h 08mUnited Airlines

Tue 8/124:45 pmSTT - PWM

1 stop7h 14mUnited Airlines

Deal found 4/23

$738

Last-minute flights from Portland to Saint Thomas Island
Discover last-minute flight deals from Portland to Saint Thomas Island. Data last updated April 24, 2025 and is based on user searches.

Fri 5/95:30 amPWM - STT

1 stop9h 40mDelta

Sat 5/174:20 pmSTT - PWM

1 stop7h 54mDelta

Deal found 4/23

$518

Fri 5/95:30 amPWM - STT

2 stops10h 13mUnited Airlines

Sat 5/174:45 pmSTT - PWM

1 stop17h 11mUnited Airlines

Deal found 4/23

$809

Sat 5/106:00 amPWM - STT

2 stops8h 48mAmerican Airlines

Tue 5/203:40 pmSTT - PWM

2 stops18h 40mAmerican Airlines

Deal found 4/23

$548

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 24, 2025.

Thu 6/55:40 amPWM - STT

1 stop6h 37mUnited Airlines

Deal found 4/23

$333

Thu 6/57:00 amPWM - STT

2 stops9h 00mAmerican Airlines

Deal found 4/23

$338

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

PWM - STT

PWMSTT

Portland

Sat 8/2

6:01 pm-10:45 am

1 stop16h 44m

Saint Thomas Island Cyril E King

Tue 8/5

4:00 pm-12:05 pm

2 stops20h 05m

$439

PortlandSaint Thomas Island

PWM - STT

PWMSTT

Portland

Fri 5/9

5:30 am-3:10 pm

1 stop9h 40m

Saint Thomas Island Cyril E King

Sat 5/17

4:20 pm-12:14 am

1 stop7h 54m

$518

PortlandSaint Thomas Island

PWM - STT

PWMSTT

Portland

Sat 8/9

6:00 am-1:08 pm

1 stop7h 08m

Saint Thomas Island Cyril E King

Tue 8/12

4:45 pm-11:59 pm

1 stop7h 14m

$738

PortlandSaint Thomas Island

PWM - STT

PWMSTT

Portland

Thu 6/5

5:40 am-12:17 pm

1 stop6h 37m

$333

PortlandSaint Thomas Island

PWM - STT

PWMSTT

Portland

Thu 6/5

7:00 am-4:00 pm

2 stops9h 00m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

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

*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, Maine-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, Maine-Saint Thomas Island flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Portland, Maine-Saint Thomas Island flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Portland, Maine-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, Maine-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, Maine to Saint Thomas Island?

To ensure you get the cheapest price possible for a flight from Portland, Maine to Saint Thomas Island, you should look to book at least 61 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Saint Thomas Island (average of $433). Flying from Portland, Maine to Saint Thomas Island in June is currently the most expensive (average of $640). 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 PWM to STT?

Unlike in the morning, when flights are generally more expensive, you can save up to 16% on flights from Portland, Maine to Saint Thomas Island by exploring options for tickets at noon.

Reviews of airlines servicing Saint Thomas Island

Delta

8.0

Very good

7,920 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

7,920 reviews

Delta

8.0

Very good

7,920 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

8,685 reviews

Delta

8.0

Very good

7,920 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

7,920 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, Maine to Saint Thomas Island round-trip?
According to our current data, American Airlines ($439), Delta ($518), and United Airlines ($738) offers the cheapest pricing from Portland, Maine to Saint Thomas Island. You may be able to fly from Portland, Maine to Saint Thomas Island for 33% less than the average price by searching for these airlines.
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, Maine to Saint Thomas Island?
Currently, September is the cheapest month in which you can book a flight from Portland, Maine to Saint Thomas Island (average of $433). Flying from Portland, Maine to Saint Thomas Island in June is currently the most expensive (average of $640). 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 3 airlines flying from Portland to Saint Thomas Island

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$415	Average$632	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$439	Average$678	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$459	Average$760	FlexibilityNo cancel fee	On-time69%

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$333+ Cheap flights from Portland, ME (PWM) 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 6/5. 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

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 24, 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 24, 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, Maine 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 18, 2025.

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

What is the cheapest time of day to fly from PWM 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 24, 2025.

Reviews of airlines servicing Saint Thomas Island

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, Maine to Saint Thomas Island round-trip?

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, Maine to Saint Thomas Island?

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Alternative routes for Portland to Saint Thomas Island

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Top 3 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 24, 2025.