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Cheap flights from Portland to Saint Thomas Island from $323

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Saint Thomas Island departing on 4/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland to Saint Thomas Island

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:51 pm - 1:56 pm
PDX
-
STT
14h 05m2 stops
United Airlines Logo
1:02 pm - 12:43 am
STT
-
PDX
15h 41m2 stops
$559United Airlines
Mon, Jan 12 - Fri, Jan 23
American Airlines Logo
10:55 pm - 5:31 pm
PDX
-
STT
14h 36m1 stop
American Airlines Logo
6:36 pm - 11:07 am
STT
-
PDX
20h 31m2 stops
$624American Airlines
Fri, Feb 20 - Sat, Feb 28
American Airlines Logo
6:22 pm - 3:56 pm
PDX
-
STT
17h 34m2 stops
American Airlines Logo
6:39 pm - 11:45 am
STT
-
PDX
21h 06m2 stops
$629American Airlines
Thu, Jan 15 - Sun, Jan 25
United Airlines Logo
1:24 pm - 1:56 pm
PDX
-
STT
20h 32m2 stops
United Airlines Logo
3:05 pm - 10:32 pm
STT
-
PDX
11h 27m1 stop
$630United Airlines
Sat, Jan 24 - Mon, Feb 2
Delta Logo
9:45 pm - 3:22 pm
PDX
-
STT
13h 37m1 stop
Delta Logo
3:10 pm - 10:15 pm
STT
-
PDX
11h 05m1 stop
$635Delta
Sun, Jan 25 - Mon, Feb 2
American Airlines Logo
11:01 pm - 3:56 pm
PDX
-
STT
12h 55m1 stop
American Airlines Logo
4:47 pm - 11:46 pm
STT
-
PDX
10h 59m1 stop
$639American Airlines
Sun, Jan 25 - Sun, Feb 1
United Airlines Logo
11:59 pm - 4:18 pm
PDX
-
STT
12h 19m1 stop
United Airlines Logo
1:02 pm - 11:14 pm
STT
-
PDX
14h 12m2 stops
$649United Airlines
Sun, Feb 22 - Thu, Feb 26
United Airlines Logo
7:45 am - 1:56 pm
PDX
-
STT
26h 11m3 stops
United Airlines Logo
3:05 pm - 10:32 pm
STT
-
PDX
11h 27m1 stop
$662United Airlines
Sat, Jan 17 - Mon, Feb 2
American Airlines Logo
11:59 pm - 5:31 pm
PDX
-
STT
13h 32m2 stops
American Airlines Logo
5:37 pm - 11:07 am
STT
-
PDX
20h 30m2 stops
$664American Airlines
Fri, Mar 6 - Mon, Mar 16
American Airlines Logo
11:59 pm - 5:05 pm
PDX
-
STT
13h 06m2 stops
American Airlines Logo
6:39 pm - 1:21 pm
STT
-
PDX
22h 42m2 stops
$699American Airlines
Thu, Jan 15 - Sun, Jan 25

United Airlines flights from Portland to Saint Thomas Island

Our best United Airlines deals on Portland to Saint Thomas Island flight tickets
United Airlines
Jan 12
PDX7:51 pmPortland
14h 05m
2 stops
STT1:56 pmSaint Thomas Island Cyril E King
Jan 23
STT1:02 pmSaint Thomas Island Cyril E King
15h 41m
2 stops
PDX12:43 amPortland
$559
Find similar
United Airlines
Jan 24
PDX1:24 pmPortland
20h 32m
2 stops
STT1:56 pmSaint Thomas Island Cyril E King
Feb 2
STT3:05 pmSaint Thomas Island Cyril E King
11h 27m
1 stop
PDX10:32 pmPortland
$630
Find similar
United Airlines
Feb 22
PDX11:59 pmPortland
12h 19m
1 stop
STT4:18 pmSaint Thomas Island Cyril E King
Feb 26
STT1:02 pmSaint Thomas Island Cyril E King
14h 12m
2 stops
PDX11:14 pmPortland
$649
Find similar

American Airlines flights from Portland to Saint Thomas Island

Our best American Airlines deals on Portland to Saint Thomas Island flight tickets
American Airlines
Feb 20
PDX10:55 pmPortland
14h 36m
1 stop
STT5:31 pmSaint Thomas Island Cyril E King
Feb 28
STT6:36 pmSaint Thomas Island Cyril E King
20h 31m
2 stops
PDX11:07 amPortland
$624
Find similar
American Airlines
Jan 15
PDX6:22 pmPortland
17h 34m
2 stops
STT3:56 pmSaint Thomas Island Cyril E King
Jan 25
STT6:39 pmSaint Thomas Island Cyril E King
21h 06m
2 stops
PDX11:45 amPortland
$629
Find similar
American Airlines
Jan 25
PDX11:01 pmPortland
12h 55m
1 stop
STT3:56 pmSaint Thomas Island Cyril E King
Feb 1
STT4:47 pmSaint Thomas Island Cyril E King
10h 59m
1 stop
PDX11:46 pmPortland
$639
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 15, 2025.
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 1/12

7:51 pm-1:56 pm

2 stops14h 05m

Saint Thomas Island Cyril E King

Fri 1/23

1:02 pm-12:43 am

2 stops15h 41m

$559

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Fri 2/20

10:55 pm-5:31 pm

1 stop14h 36m

Saint Thomas Island Cyril E King

Sat 2/28

6:36 pm-11:07 am

2 stops20h 31m

$624

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Thu 1/15

6:22 pm-3:56 pm

2 stops17h 34m

Saint Thomas Island Cyril E King

Sun 1/25

6:39 pm-11:45 am

2 stops21h 06m

$629

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Sat 1/24

1:24 pm-1:56 pm

2 stops20h 32m

Saint Thomas Island Cyril E King

Mon 2/2

3:05 pm-10:32 pm

1 stop11h 27m

$630

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Sun 1/25

9:45 pm-3:22 pm

1 stop13h 37m

Saint Thomas Island Cyril E King

Mon 2/2

3:10 pm-10:15 pm

1 stop11h 05m

$635

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Sun 1/25

11:01 pm-3:56 pm

1 stop12h 55m

Saint Thomas Island Cyril E King

Sun 2/1

4:47 pm-11:46 pm

1 stop10h 59m

$639

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Sun 2/22

11:59 pm-4:18 pm

1 stop12h 19m

Saint Thomas Island Cyril E King

Thu 2/26

1:02 pm-11:14 pm

2 stops14h 12m

$649

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Sat 1/17

7:45 am-1:56 pm

3 stops26h 11m

Saint Thomas Island Cyril E King

Mon 2/2

3:05 pm-10:32 pm

1 stop11h 27m

$662

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Fri 3/6

11:59 pm-5:31 pm

2 stops13h 32m

Saint Thomas Island Cyril E King

Mon 3/16

5:37 pm-11:07 am

2 stops20h 30m

$664

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Thu 1/15

11:59 pm-5:05 pm

2 stops13h 06m

Saint Thomas Island Cyril E King

Sun 1/25

6:39 pm-1:21 pm

2 stops22h 42m

$699

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Saint Thomas Island from

How to get the cheapest flight ticket from Portland to Saint Thomas Island

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

The month of September is another great option to travel to Saint Thomas Island, with average flight prices from Portland averaging around $571.

What is the cheapest day to depart on your flight to Saint Thomas Island?

On average, the least expensive day to fly to Saint Thomas Island from Portland is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $566. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Saint Thomas Island for around $804.

What is the cheapest time of day to depart on your flight to Saint Thomas Island?

The cheapest time of day to fly to Saint Thomas Island is in the morning when flights can be purchased for as low as $385. Flights to Saint Thomas Island are more costly in the evening, with an average ticket price of $691. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Portland to Saint Thomas Island flights?

You could potentially save up to 24% on your flight if you consider stops on a Portland to Saint Thomas Island flight.

When to book flights from Portland to Saint Thomas Island

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Saint Thomas Island according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Saint Thomas Island (PDX to STT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Saint Thomas Island

Fastest flight time

10h 33m

Direct flights

None
The fastest flight from Portland to Saint Thomas Island takes 10h 33m
There are no direct flights from Portland to Saint Thomas Island. There are no popular flight routes from Portland to Saint Thomas Island.
Search flight deals

  • How far is Portland to Saint Thomas Island Cyril E King by plane?

    The distance between Portland and Saint Thomas Island Cyril E King is about 3769.0 mi. In terms of flight time, this usually takes a little over 10h 33m.

  • When did momondo last update prices for flights from Portland Airport to Saint Thomas Island Cyril E King Airport?

    Prices for flights from Portland Airport to Saint Thomas Island Cyril E King Airport are updated daily.

  • How many operators does momondo search for flights from Portland Airport to Saint Thomas Island Cyril E King Airport?

  • How old do you have to be to fly from Portland Airport to Saint Thomas Island Cyril E King Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Saint Thomas Island Cyril E King Airport.

  • What documentation or ID do you need to fly to Saint Thomas Island Cyril E King Airport?

    The travel and health documents required for your trip to Saint Thomas Island Cyril E King Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Saint Thomas Island Cyril E King Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Portland to Saint Thomas Island?

Best airlines flying from Portland to Saint Thomas Island

Compare and see reviews for airlines that fly from Portland to Saint Thomas Island with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $213Free CancellationRating
6.3
8,186 reviews
Search Spirit Airlines flights
DeltaPriceFrom $457Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $478Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
American AirlinesPriceFrom $559Free CancellationRating
7.2
11,051 reviews
Search American Airlines flights

Traveling to a place near Saint Thomas Island?

Book flights to Saint Thomas Island if you plan to visit one of these locations
St. John

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Saint Thomas Island?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Saint Thomas Island from Portland.

Can I find flights from Portland to Saint Thomas Island with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portland to Saint Thomas Island flights to just show those with flexible booking policies.

How can momondo help me find flights from Portland to Saint Thomas Island?

Once all potential Portland to Saint Thomas Island flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Portland to Saint Thomas Island right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to Saint Thomas Island flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Saint Thomas Island trip

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