Cheap flights from Seattle to Santiago de los Caballeros from $319
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Santiago de los Caballeros departing on 12/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Find the cheapest flights from Seattle to Santiago de los Caballeros
Cheap round-trip flights
Cheap one-way flights
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.American Airlines flights from Seattle to Santiago de los Caballeros
Our best American Airlines deals on Seattle to Santiago de los Caballeros flight tickets
Delta flights from Seattle to Santiago de los Caballeros
Our best Delta deals on Seattle to Santiago de los Caballeros flight tickets
momondo Fare Finder
Use the filters below to find and compare flights from Seattle to Santiago de los Caballeros that are best for you.
Fly from
Fly to
Route
Depart
Return
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Tue 11/10
7:15 am-12:59 am
1 stop13h 44m
Santiago de los Caballeros
Wed 11/18
2:32 pm-11:00 pm
1 stop12h 28m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Wed 11/11
7:15 am-12:59 am
1 stop13h 44m
Santiago de los Caballeros
Wed 11/18
2:32 pm-11:00 pm
1 stop12h 28m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Sat 11/7
10:59 pm-1:33 pm
1 stop10h 34m
Santiago de los Caballeros
Wed 11/18
2:32 pm-11:00 pm
1 stop12h 28m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Mon 11/9
10:52 pm-1:07 pm
1 stop10h 15m
Santiago de los Caballeros
Wed 11/18
2:32 pm-11:00 pm
1 stop12h 28m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Sun 11/8
9:14 pm-1:26 pm
1 stop12h 12m
Santiago de los Caballeros
Sun 11/15
5:08 pm-9:39 am
2 stops20h 31m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Sun 11/8
5:24 pm-1:26 pm
2 stops16h 02m
Santiago de los Caballeros
Sun 11/15
5:08 pm-9:39 am
2 stops20h 31m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Thu 11/19
9:14 pm-4:06 pm
1 stop14h 52m
Santiago de los Caballeros
Thu 11/26
2:22 pm-9:59 am
2 stops23h 37m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Mon 10/26
6:30 am-10:51 pm
1 stop13h 21m
Santiago de los Caballeros
Wed 10/28
5:00 am-9:39 pm
1 stop19h 39m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Thu 11/19
6:30 am-11:51 pm
1 stop13h 21m
Santiago de los Caballeros
Thu 11/26
6:00 am-9:40 am
2 stops31h 40m
SeattleSantiago de los Caballeros
SEA Seattle/Tacoma Intl - STI Santiago de los Caballeros
SEASTI
Seattle/Tacoma Intl
Mon 10/26
10:40 am-1:53 pm
2 stops24h 13m
Santiago de los Caballeros
Wed 10/28
3:00 pm-9:47 am
2 stops21h 47m
See travel insights to Santiago de los Caballeros from
How to get the cheapest flight ticket from Seattle 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
What is the cheapest month to fly to Santiago de los Caballeros?
The cheapest month to fly to Santiago de los Caballeros from Seattle is in November. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel to Santiago de los Caballeros during the month of November, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $0.
Can stopping save me money on Seattle to Santiago de los Caballeros flights?
You could potentially save up to 50% on your flight if you consider stops on a Seattle to Santiago de los Caballeros flight.
When to book flights from Seattle to Santiago de los Caballeros
Cheap Seattle to Santiago de los Caballeros (SEA to STI) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Santiago de los Caballeros
Frequently asked questions about flying from Seattle to Santiago de los Caballeros
How far is Seattle/Tacoma Intl to Santiago de los Caballeros by plane?
The distance between Seattle/Tacoma Intl and Santiago de los Caballeros is about 3464.4 mi. In terms of flight time, this usually takes a little over 13h 21m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport is 1 as of October 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Santiago de los Caballeros Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl 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 you'll need for your trip to Santiago de los Caballeros Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Santiago de los Caballeros Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Santiago de los Caballeros?
Based on momondo bookings for flights between Seattle and Santiago de los Caballeros, the leading airline is American Airlines, making up 100% of the total bookings.
Best airlines flying from Seattle to Santiago de los Caballeros
Compare and see reviews for airlines that fly from Seattle to Santiago de los Caballeros with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $540 | Free Cancellation | Rating 7.0 12,146 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Santiago de los Caballeros?
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 Santiago de los Caballeros from Seattle.
Can I find flights from Seattle to Santiago de los Caballeros with flexible booking policies on momondo?
Flights from Seattle to Santiago de los Caballeros with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Seattle to Santiago de los Caballeros?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Santiago de los Caballeros from Seattle.
I’m not ready to book a flight from Seattle to Santiago de los Caballeros right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Seattle to Santiago de los Caballeros 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.