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Cheap flights from Portland to Saint Thomas Island from $559

This is the cheapest round-trip 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 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Portland to Saint Thomas Island

Cheap round-trip flights

American Airlines Logo
5:42 pm - 4:57 pmPDX-STT
19h 15m2 stops
American Airlines Logo
6:17 pm - 11:10 amSTT-PDX
20h 53m2 stops
$559American Airlines
Find Deal
Mon, Nov 17 - Mon, Nov 24
Delta Logo
7:15 pm - 2:50 pmPDX-STT
16h 35m2 stops
Delta Logo
2:49 pm - 10:08 pmSTT-PDX
10h 19m1 stop
$631Delta
Find Deal
Fri, Oct 17 - Thu, Oct 23
American Airlines Logo
10:55 pm - 5:25 pmPDX-STT
14h 30m1 stop
American Airlines Logo
2:35 pm - 11:29 pmSTT-PDX
12h 54m1 stop
$639American Airlines
Find Deal
Thu, Jan 15 - Sun, Jan 25
United Airlines Logo
11:59 pm - 4:18 pmPDX-STT
12h 19m1 stop
United Airlines Logo
3:05 pm - 10:32 pmSTT-PDX
11h 27m1 stop
$649United Airlines
Find Deal
Sat, Jan 17 - Mon, Feb 2
American Airlines Logo
6:42 pm - 11:00 amPDX-STT
13h 18m2 stops
American Airlines Logo
3:30 pm - 11:03 pmSTT-PDX
10h 33m1 stop
$669American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
United Airlines Logo
6:59 pm - 12:56 pmPDX-STT
14h 57m2 stops
United Airlines Logo
12:05 pm - 8:25 pmSTT-PDX
11h 20m1 stop
$678United Airlines
Find Deal
Thu, Mar 12 - Tue, Mar 17
United Airlines Logo
11:55 pm - 3:18 pmPDX-STT
12h 23m1 stop
United Airlines Logo
12:05 pm - 8:25 pmSTT-PDX
11h 20m1 stop
$684United Airlines
Find Deal
Thu, Mar 12 - Tue, Mar 17
United Airlines Logo
3:50 pm - 12:00 pmPDX-STT
16h 10m2 stops
United Airlines Logo
1:02 pm - 10:32 pmSTT-PDX
13h 30m2 stops
$689United Airlines
Find Deal
Mon, Jan 12 - Fri, Jan 23
United Airlines Logo
3:54 pm - 1:12 pmPDX-STT
17h 18m2 stops
United Airlines Logo
1:02 pm - 8:29 pmSTT-PDX
11h 27m1 stop
$690United Airlines
Find Deal
Mon, Nov 3 - Sat, Nov 8
Delta Logo
7:15 pm - 1:39 pmPDX-STT
15h 24m2 stops
Delta Logo
2:49 pm - 10:08 pmSTT-PDX
10h 19m1 stop
$746Delta
Find Deal
Fri, Oct 17 - Tue, Oct 21

Delta flights from Portland to Saint Thomas Island

Our best Delta deals on Portland to Saint Thomas Island flight tickets
Delta
Oct 17
PDX7:15 pmPortland
16h 35m
2 stops
STT2:50 pmSaint Thomas Island Cyril E King
Oct 23
STT2:49 pmSaint Thomas Island Cyril E King
10h 19m
1 stop
PDX10:08 pmPortland
$631
Find similar
Delta
Oct 17
PDX7:15 pmPortland
15h 24m
2 stops
STT1:39 pmSaint Thomas Island Cyril E King
Oct 21
STT2:49 pmSaint Thomas Island Cyril E King
10h 19m
1 stop
PDX10:08 pmPortland
$746
Find similar
Delta
Oct 17
PDX10:10 pmPortland
12h 29m
1 stop
STT1:39 pmSaint Thomas Island Cyril E King
Oct 23
STT2:49 pmSaint Thomas Island Cyril E King
10h 19m
1 stop
PDX10:08 pmPortland
$826
Find similar

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 17
PDX11:59 pmPortland
12h 19m
1 stop
STT4:18 pmSaint Thomas Island Cyril E King
Feb 2
STT3:05 pmSaint Thomas Island Cyril E King
11h 27m
1 stop
PDX10:32 pmPortland
$649
Find similar
United Airlines
Mar 12
PDX6:59 pmPortland
14h 57m
2 stops
STT12:56 pmSaint Thomas Island Cyril E King
Mar 17
STT12:05 pmSaint Thomas Island Cyril E King
11h 20m
1 stop
PDX8:25 pmPortland
$678
Find similar
United Airlines
Mar 12
PDX11:55 pmPortland
12h 23m
1 stop
STT3:18 pmSaint Thomas Island Cyril E King
Mar 17
STT12:05 pmSaint Thomas Island Cyril E King
11h 20m
1 stop
PDX8:25 pmPortland
$684
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 September 16, 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 11/17

5:42 pm-4:57 pm

2 stops19h 15m

Saint Thomas Island Cyril E King

Mon 11/24

6:17 pm-11:10 am

2 stops20h 53m

$559

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Fri 10/17

7:15 pm-2:50 pm

2 stops16h 35m

Saint Thomas Island Cyril E King

Thu 10/23

2:49 pm-10:08 pm

1 stop10h 19m

$631

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Thu 1/15

10:55 pm-5:25 pm

1 stop14h 30m

Saint Thomas Island Cyril E King

Sun 1/25

2:35 pm-11:29 pm

1 stop12h 54m

$639

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Sat 1/17

11:59 pm-4:18 pm

1 stop12h 19m

Saint Thomas Island Cyril E King

Mon 2/2

3:05 pm-10:32 pm

1 stop11h 27m

$649

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Tue 3/10

6:42 pm-11:00 am

2 stops13h 18m

Saint Thomas Island Cyril E King

Wed 3/11

3:30 pm-11:03 pm

1 stop10h 33m

$669

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Thu 3/12

6:59 pm-12:56 pm

2 stops14h 57m

Saint Thomas Island Cyril E King

Tue 3/17

12:05 pm-8:25 pm

1 stop11h 20m

$678

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Thu 3/12

11:55 pm-3:18 pm

1 stop12h 23m

Saint Thomas Island Cyril E King

Tue 3/17

12:05 pm-8:25 pm

1 stop11h 20m

$684

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Mon 1/12

3:50 pm-12:00 pm

2 stops16h 10m

Saint Thomas Island Cyril E King

Fri 1/23

1:02 pm-10:32 pm

2 stops13h 30m

$689

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Mon 11/3

3:54 pm-1:12 pm

2 stops17h 18m

Saint Thomas Island Cyril E King

Sat 11/8

1:02 pm-8:29 pm

1 stop11h 27m

$690

PortlandSaint Thomas Island

PDX - STT

PDXSTT

Portland

Fri 10/17

7:15 pm-1:39 pm

2 stops15h 24m

Saint Thomas Island Cyril E King

Tue 10/21

2:49 pm-10:08 pm

1 stop10h 19m

$746

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 $527.

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.

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

You are more likely to see cheaper flights to Saint Thomas Island from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Saint Thomas Island for around $713 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Saint Thomas Island from Portland for as low as $505 on momondo.

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

You could potentially save up to 35% 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

Direct flights

None
There are no direct flights from Portland to Saint Thomas Island. There are no popular flight routes from Portland to Saint Thomas Island.
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  • 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 9h 58m.

  • 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
8,019 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $371Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
DeltaPriceFrom $437Free CancellationRating
7.9
7,957 reviews
Search Delta flights
American AirlinesPriceFrom $437Free CancellationRating
7.2
10,000 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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