$160 Cheap Flights from St. Thomas (STT) to Portland (PWM)

View $160 flight on Tue, Mar 10, 2026Opens in a new window

Popular airlines from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM)

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Cheap Flights from St. Thomas to Portland (STT-PWM)

Prices were available within the past 7 days and start at $160 for one-way flights and $315 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Nov 3 - Mon, Nov 17
STT
St. Thomas
PWM
Portland
$315 Roundtrip, found 6 days ago
$315
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Nov 3 from St. Thomas to Portland, returning Mon, Nov 17, priced at $315 found 6 days ago
Delta
Thu, Oct 30 - Mon, Nov 17
STT
St. Thomas
PWM
Portland
$349 Roundtrip, found 6 days ago
$349
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Oct 30 from St. Thomas to Portland, returning Mon, Nov 17, priced at $349 found 6 days ago
Delta
Thu, Oct 30 - Sun, Nov 16
STT
St. Thomas
PWM
Portland
$383 Roundtrip, found 6 days ago
$383
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Oct 30 from St. Thomas to Portland, returning Sun, Nov 16, priced at $383 found 6 days ago
American Airlines
Sat, Nov 1 - Mon, Nov 17
STT
St. Thomas
PWM
Portland
$403 Roundtrip, found 6 days ago
$403
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Nov 1 from St. Thomas to Portland, returning Mon, Nov 17, priced at $403 found 6 days ago
Delta
Wed, Mar 4 - Wed, Mar 11
STT
St. Thomas
PWM
Portland
$409 Roundtrip, found 1 day ago
$409
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Mar 4 from St. Thomas to Portland, returning Wed, Mar 11, priced at $409 found 1 day ago
JetBlue Airways
Tue, Nov 4 - Wed, Nov 19
STT
St. Thomas
PWM
Portland
$435 Roundtrip, found 6 days ago
$435
Roundtrip
found 6 days ago
Select JetBlue Airways flight, departing Tue, Nov 4 from St. Thomas to Portland, returning Wed, Nov 19, priced at $435 found 6 days ago
United
Mon, Nov 3 - Mon, Dec 1
STT
St. Thomas
PWM
Portland
$439 Roundtrip, found 2 days ago
$439
Roundtrip
found 2 days ago
Select United flight, departing Mon, Nov 3 from St. Thomas to Portland, returning Mon, Dec 1, priced at $439 found 2 days ago
Delta
Mon, Nov 3 - Mon, Dec 1
STT
St. Thomas
PWM
Portland
$448 Roundtrip, found 2 days ago
$448
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Nov 3 from St. Thomas to Portland, returning Mon, Dec 1, priced at $448 found 2 days ago
United
Sat, Oct 11 - Sun, Oct 26
STT
St. Thomas
PWM
Portland
$473 Roundtrip, found 6 days ago
$473
Roundtrip
found 6 days ago
Select United flight, departing Sat, Oct 11 from St. Thomas to Portland, returning Sun, Oct 26, priced at $473 found 6 days ago
Cape Air
Tue, Oct 7 - Sun, Oct 19
STT
St. Thomas
PWM
Portland
$510 Roundtrip, found 6 days ago
$510
Roundtrip
found 6 days ago
Select Cape Air flight, departing Tue, Oct 7 from St. Thomas to Portland, returning Sun, Oct 19, priced at $510 found 6 days ago
Flights from St. Thomas (STT) to Portland (PWM)
Origin airport
Cyril E. King
Destination airport
Portland Intl. Jetport
Airlines serving
American Airlines, Delta, JetBlue Airways, United
Roundtrip price
$315
Distance
1776 mi

St. Thomas to Portland Flights

The cheapest times to fly from St. Thomas to Portland

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Thomas to Portland are during the month of November. You can find some of the cheapest flights from St. Thomas to Portland with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Thomas to Portland

Sunday is one of the best days to book for cheap flights from St. Thomas to Portland: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Thomas to Portland

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Thomas to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $160 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Thomas to Portland flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Thomas to Portland airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM) cost?
Lock in a cheap one-way flight from $160 or cheap return flight from $315 from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM)?
November is the least expensive month to fly from STT to PWM. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM)?
To find the cheapest airline flying from STT to PWM, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM)?
There aren't any daily direct flights departing from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from STT to PWM?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM)?
To land at Portland Intl. Jetport Airport (PWM) on time, pick a flight that leaves Cyril E. King Airport (STT) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM) last-minute?
Booking your flight from STT to PWM shortly before your getaway is generally more expensive. However, if there's some wiggle room with your travel times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book a STT to PWM flight and hotel package?
You'll generally save money by booking a STT to PWM flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After selecting your preferred accommodations and flights, consider adding extras including car rentals, tours and activities.
Can I cancel or change the date of my flight from Cyril E. King Airport (STT) to Portland Intl. Jetport Airport (PWM)?
If you reserved your STT to PWM flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more information.

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*Available to One Key members.