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Flights from Portland to Saint Thomas

Find the cheapest flight options from Portland to Saint Thomas over the next three months. Book one-way tickets from US$143 and round-trip tickets from US$351.

      • PWM 06:17
        6h 32m
        1 stop
        STT 13:49
        Portland - Saint Thomas | Fri, Jan 30 | Delta Air Lines
        STT 17:20
        8h
        1 stop
        PWM 00:20
        Saint Thomas - Portland | Mon, Feb 2 | Delta Air Lines
        US$351 US$2,437
        86% OFF
        86% OFF
        US$2,437 US$351
      • PWM 06:00
        29h
        1 stop
        STT 12:00
        Portland - Saint Thomas | Mon, Jan 5 | United Airlines
        STT 17:25
        21h 31m
        1 stop
        PWM 13:56
        Saint Thomas - Portland | Mon, Jan 12 | United Airlines
        US$458 US$2,437
        81% OFF
        81% OFF
        US$2,437 US$458
      • PWM 19:27
        15h 33m
        1 stop
        STT 12:00
        Portland - Saint Thomas | Fri, Jan 30 | United Airlines
        STT 17:25
        7h 5m
        1 stop
        PWM 23:30
        Saint Thomas - Portland | Mon, Feb 2 | United Airlines
        US$581 US$2,437
        76% OFF
        76% OFF
        US$2,437 US$581
      • PWM 06:00
        29h
        1 stop
        STT 12:00
        Portland - Saint Thomas | Sun, Dec 14 | United Airlines
        STT 18:45
        29h 37m
        1 stop
        PWM 23:22
        Saint Thomas - Portland | Thu, Dec 18 | United Airlines
        US$673
        72% OFF
        US$2,437 US$673
      • PWM 06:00
        29h
        1 stop
        STT 12:00
        Portland - Saint Thomas | Mon, Dec 15 | United Airlines
        STT 18:45
        29h 37m
        1 stop
        PWM 23:22
        Saint Thomas - Portland | Fri, Dec 19 | United Airlines
        US$673
        72% OFF
        US$2,437 US$673
      • PWM 19:08
        15h 52m
        1 stop
        STT 12:00
        Portland - Saint Thomas | Sat, Dec 27 | United Airlines
        STT 13:02
        11h 57m
        1 stop
        PWM 23:59
        Saint Thomas - Portland | Fri, Jan 2 | United Airlines
        US$2,169
        11% OFF
        US$2,437 US$2,169
      • PWM 13:00
        17h 25m
        1 stop
        STT Invalid Date
        Portland - Saint Thomas | Fri, Dec 12 | Normal Airline
        STT 15:00
        6h
        Direct
        PWM 16:00
        Saint Thomas - Portland | Sun, Dec 14 | Normal Airline
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Displayed flight fares from Portland to Saint Thomas are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight details for Portland to Saint Thomas

The distance between Portland and Saint Thomas is 2,858.79km. Based on Trip.com's data, travel demand peaks in October. The off-season for travel is September.

Cheapest one-way flight priceUS$143
Cheapest return ticket priceUS$351
Off-season travel monthSeptember
Peak season for travelOctober
Flight distance2,858.79km

Find the best time to fly from Portland to Saint Thomas

The cheapest time for Portland to Saint Thomas flights: Jan 18 to Jan 25 — one way flight prices from US$143.

Cheapest flights
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  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Portland to Saint Thomas, calculated over the upcoming 10 weeks.

Flight FAQs

  • Which airlines offer the cheapest flights from Portland (PWM) to Saint Thomas (STT)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as US$143 on Cheapest nonstop routes (e.g. PWM to STT on Sun, Jan 25), while Delta Air Lines offers Cheapest nonstop round-trips from US$351 departing on Fri, Jan 30 and returning on Mon, Feb 2.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Portland to Saint Thomas is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Portland to Saint Thomas, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sun, Jan 25, with one-way flights priced at just US$143.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Delta Air Lines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Saint Thomas travel is around October.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Portland to Saint Thomas is September, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Portland to Saint Thomas on December 14, 2025 with United Airlines, with prices starting at US$672.
  • The time difference between Saint Thomas and Portland is 1h.
  • Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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