What is the cheapest airline that flies from Portland to Santiago de los Caballeros?

American Airlines is the most popular carrier operating from Portland to Santiago de los Caballeros

What airlines fly to Santiago de los Caballeros?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Santiago de los Caballeros from Portland according to our data. American Airlines is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Santiago de los Caballeros. Keep in mind that there are 3 different airlines that fly to Santiago de los Caballeros on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Santiago de los Caballeros Airport?

Prices for flights from Portland Airport to Santiago de los Caballeros Airport are updated daily.

How many operators does momondo search for flights from Portland Airport to Santiago de los Caballeros Airport?

As of December 2025, there are 2 operators available to choose from for flights from Portland Airport to Santiago de los Caballeros Airport.

How old do you have to be to fly from Portland Airport to Santiago de los Caballeros 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 Santiago de los Caballeros Airport.

What documentation or ID do you need to fly to Santiago de los Caballeros Airport?

The travel and health documents required for your trip to Santiago de los Caballeros 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 Santiago de los Caballeros Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$372 Cheap Flights from Portland to Santiago de los Caballeros in 2025/26

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Find the cheapest flights from Portland to Santiago de los Caballeros

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:00 am - 11:51 pm

PDX

STI

14h 51m2 stops

12:52 pm - 8:43 pm

STI

PDX

11h 51m1 stop

$468United Airlines

Tue, Feb 3 - Wed, Feb 18

1:02 pm - 1:04 pm

PDX

STI

20h 02m2 stops

9:59 pm - 3:11 pm

STI

PDX

21h 12m2 stops

$472Delta

Tue, Feb 3 - Tue, Feb 17

6:59 pm - 12:57 pm

PDX

STI

14h 58m2 stops

6:00 am - 7:27 pm

STI

PDX

16h 27m2 stops

$582United Airlines

Sun, May 3 - Wed, May 6

11:07 pm - 10:05 pm

PDX

STI

18h 58m1 stop

8:00 am - 11:59 pm

STI

PDX

19h 59m1 stop

$593American Airlines

Wed, Feb 11 - Mon, Feb 16

11:07 pm - 2:20 pm

PDX

STI

12h 13m1 stop

3:35 pm - 11:33 am

STI

PDX

22h 58m2 stops

$597American Airlines

Mon, Apr 13 - Mon, May 4

11:01 pm - 9:46 pm

PDX

STI

18h 45m1 stop

6:00 am - 10:11 pm

STI

PDX

20h 11m2 stops

$622American Airlines

Sat, Jan 10 - Sat, Jan 17

6:59 pm - 12:57 pm

PDX

STI

14h 58m2 stops

6:00 am - 12:48 am

STI

PDX

21h 48m2 stops

$627United Airlines

Sun, May 3 - Wed, May 6

11:59 pm - 11:51 pm

PDX

STI

19h 52m2 stops

12:52 pm - 8:43 pm

STI

PDX

11h 51m1 stop

$641United Airlines

Sat, Feb 14 - Sat, Feb 28

11:59 pm - 10:05 pm

PDX

STI

18h 06m2 stops

8:00 am - 7:38 pm

STI

PDX

15h 38m2 stops

$647American Airlines

Sat, Feb 14 - Sat, Feb 28

7:00 am - 1:34 am

PDX

STI

14h 34m1 stop

6:39 am - 8:25 pm

STI

PDX

17h 46m1 stop

$677Delta

Sat, Feb 14 - Sat, Feb 28

United Airlines flights from Portland to Santiago de los Caballeros

Our best United Airlines deals on Portland to Santiago de los Caballeros flight tickets

United Airlines

Feb 3

PDX5:00 amPortland

14h 51m

2 stops

STI11:51 pmSantiago de los Caballeros

Feb 18

STI12:52 pmSantiago de los Caballeros

11h 51m

1 stop

PDX8:43 pmPortland

$468

Find similar

United Airlines

Jan 26

PDX11:05 pmPortland

11h 48m

1 stop

STI2:53 pmSantiago de los Caballeros

Jan 29

STI12:52 pmSantiago de los Caballeros

12h 57m

1 stop

PDX9:49 pmPortland

$578

Find similar

United Airlines

Jan 26

PDX11:59 pmPortland

19h 52m

2 stops

STI11:51 pmSantiago de los Caballeros

Jan 29

STI6:00 amSantiago de los Caballeros

20h 32m

2 stops

PDX10:32 pmPortland

$582

Find similar

Delta flights from Portland to Santiago de los Caballeros

Our best Delta deals on Portland to Santiago de los Caballeros flight tickets

Delta

Feb 3

PDX1:02 pmPortland

20h 02m

2 stops

STI1:04 pmSantiago de los Caballeros

Feb 17

STI9:59 pmSantiago de los Caballeros

21h 12m

2 stops

PDX3:11 pmPortland

$472

Find similar

Delta

Feb 14

PDX7:00 amPortland

14h 34m

1 stop

STI1:34 amSantiago de los Caballeros

Feb 28

STI6:39 amSantiago de los Caballeros

17h 46m

1 stop

PDX8:25 pmPortland

$677

Find similar

Delta

Jan 10

PDX7:00 amPortland

13h 50m

1 stop

STI12:50 amSantiago de los Caballeros

Jan 17

STI6:38 amSantiago de los Caballeros

17h 47m

1 stop

PDX8:25 pmPortland

$729

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Portland to Santiago de los Caballeros that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Tue 2/3

5:00 am-11:51 pm

2 stops14h 51m

Santiago de los Caballeros

Wed 2/18

12:52 pm-8:43 pm

1 stop11h 51m

$468

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Tue 2/3

1:02 pm-1:04 pm

2 stops20h 02m

Santiago de los Caballeros

Tue 2/17

9:59 pm-3:11 pm

2 stops21h 12m

$472

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Sun 5/3

6:59 pm-12:57 pm

2 stops14h 58m

Santiago de los Caballeros

Wed 5/6

6:00 am-7:27 pm

2 stops16h 27m

$582

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Wed 2/11

11:07 pm-10:05 pm

1 stop18h 58m

Santiago de los Caballeros

Mon 2/16

8:00 am-11:59 pm

1 stop19h 59m

$593

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Mon 4/13

11:07 pm-2:20 pm

1 stop12h 13m

Santiago de los Caballeros

Mon 5/4

3:35 pm-11:33 am

2 stops22h 58m

$597

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Sat 1/10

11:01 pm-9:46 pm

1 stop18h 45m

Santiago de los Caballeros

Sat 1/17

6:00 am-10:11 pm

2 stops20h 11m

$622

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Sun 5/3

6:59 pm-12:57 pm

2 stops14h 58m

Santiago de los Caballeros

Wed 5/6

6:00 am-12:48 am

2 stops21h 48m

$627

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Sat 2/14

11:59 pm-11:51 pm

2 stops19h 52m

Santiago de los Caballeros

Sat 2/28

12:52 pm-8:43 pm

1 stop11h 51m

$641

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Sat 2/14

11:59 pm-10:05 pm

2 stops18h 06m

Santiago de los Caballeros

Sat 2/28

8:00 am-7:38 pm

2 stops15h 38m

$647

PortlandSantiago de los Caballeros

PDX - STI

PDXSTI

Portland

Sat 2/14

7:00 am-1:34 am

1 stop14h 34m

Santiago de los Caballeros

Sat 2/28

6:39 am-8:25 pm

1 stop17h 46m

$677

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland to Santiago de los Caballeros

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

Prices

Airlines

What is the cheapest day to depart on your flight to Santiago de los Caballeros?

The cheapest day to depart from Portland to Santiago de los Caballeros is on a Saturday when prices can be found for as low as $609. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Santiago de los Caballeros for around $1,131.

What is the cheapest time of day to depart on your flight to Santiago de los Caballeros?

Our data shows that the cheapest Portland to Santiago de los Caballeros flights are usually those with departure times in the afternoon. Our users have found flights to Santiago de los Caballeros in the afternoon for as low as $558. In the morning is when there is more demand to fly to Santiago de los Caballeros, so prices are often more expensive at around $821 per ticket.

Can stopping save me money on Portland to Santiago de los Caballeros flights?

You could potentially save up to 21% on your flight if you consider stops on a Portland to Santiago de los Caballeros flight.

When to book flights from Portland to Santiago de los Caballeros

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Santiago de los Caballeros according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Santiago de los Caballeros (PDX to STI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Santiago de los Caballeros

Fastest flight time	11h 08m
Direct flights	None

The fastest flight from Portland to Santiago de los Caballeros takes 11h 08m

There are no direct flights from Portland to Santiago de los Caballeros. There are no popular flight routes from Portland to Santiago de los Caballeros.

Search flight deals

How far is Portland to Santiago de los Caballeros by plane?
Portland and Santiago de los Caballeros are 3443.3 mi apart from one another. Flights usually cover this in 11h 08m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Portland Airport to Santiago de los Caballeros Airport?
Prices for flights from Portland Airport to Santiago de los Caballeros Airport are updated daily.
How many operators does momondo search for flights from Portland Airport to Santiago de los Caballeros Airport?
As of December 2025, there are 2 operators available to choose from for flights from Portland Airport to Santiago de los Caballeros Airport.
How old do you have to be to fly from Portland Airport to Santiago de los Caballeros 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 Santiago de los Caballeros Airport.
What documentation or ID do you need to fly to Santiago de los Caballeros Airport?
The travel and health documents required for your trip to Santiago de los Caballeros 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 Santiago de los Caballeros 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 Santiago de los Caballeros?
momondo data reveals that the most frequently booked airline on the route from Portland to Santiago de los Caballeros is American Airlines, representing 71% of all bookings. The subsequent popular airline is United Airlines at 29%.

Best airlines flying from Portland to Santiago de los Caballeros

Compare and see reviews for airlines that fly from Portland to Santiago de los Caballeros with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $467	Free Cancellation	Rating 7.4 9,091 reviews		Search United Airlines flights
American Airlines	PriceFrom $492	Free Cancellation	Rating 7.2 11,054 reviews		Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Santiago de los Caballeros?

Finding the right flight to Santiago de los Caballeros from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Santiago de los Caballeros quick and easy, saving you time and money.

Can I find flights from Portland to Santiago de los Caballeros with flexible booking policies on momondo?

All flight searches from Portland to Santiago de los Caballeros on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Santiago de los Caballeros?

momondo provides multiple filters to help you find the best flight to Santiago de los Caballeros from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Portland to Santiago de los Caballeros right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Santiago de los Caballeros from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Santiago de los Caballeros trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Portland to Santiago de los Caballeros from $372

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Portland to Santiago de los Caballeros

Cheap round-trip flights

Cheap one-way flights

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United Airlines flights from Portland to Santiago de los Caballeros

Our best United Airlines deals on Portland to Santiago de los Caballeros flight tickets

Delta flights from Portland to Santiago de los Caballeros

Our best Delta deals on Portland to Santiago de los Caballeros flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Portland to Santiago de los Caballeros that are best for you.

See travel insights to Santiago de los Caballeros from

How to get the cheapest flight ticket from Portland to Santiago de los Caballeros

What is the cheapest day to depart on your flight to Santiago de los Caballeros?

What is the cheapest time of day to depart on your flight to Santiago de los Caballeros?

Can stopping save me money on Portland to Santiago de los Caballeros flights?

You could potentially save up to 21% on your flight if you consider stops on a Portland to Santiago de los Caballeros flight.

What is the cheapest airline that flies from Portland to Santiago de los Caballeros?

American Airlines is the most popular carrier operating from Portland to Santiago de los Caballeros

What airlines fly to Santiago de los Caballeros?

When to book flights from Portland to Santiago de los Caballeros

Cheap Portland to Santiago de los Caballeros (PDX to STI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Santiago de los Caballeros

Fastest flight time

Direct flights

How far is Portland to Santiago de los Caballeros by plane?

When did momondo last update prices for flights from Portland Airport to Santiago de los Caballeros Airport?

How many operators does momondo search for flights from Portland Airport to Santiago de los Caballeros Airport?

How old do you have to be to fly from Portland Airport to Santiago de los Caballeros Airport?

What documentation or ID do you need to fly to Santiago de los Caballeros Airport?

What is the most popular airline from Portland to Santiago de los Caballeros?

Best airlines flying from Portland to Santiago de los Caballeros

Compare and see reviews for airlines that fly from Portland to Santiago de los Caballeros with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Santiago de los Caballeros?

Can I find flights from Portland to Santiago de los Caballeros with flexible booking policies on momondo?

How can momondo help me find flights from Portland to Santiago de los Caballeros?

I’m not ready to book a flight from Portland to Santiago de los Caballeros right now. Can momondo alert me if prices change?

An easier way to manage your Santiago de los Caballeros trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the Dominican Republic

Airports servicing Dominican Republic