Cheap flights from Seattle to Castries from $331
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 Castries departing on 3/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
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.Find the cheapest flights from Seattle to Castries
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Air Canada flights from Seattle to Castries
Our best Air Canada deals on Seattle to Castries flight tickets
American Airlines flights from Seattle to Castries
Our best American Airlines deals on Seattle to Castries flight tickets
See travel insights to Castries from
How to get the cheapest flight ticket from Seattle to Castries
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 Castries?
The month of August is, on average, the cheapest month to fly to Castries from Seattle, with most prices found around $529. The month of September is another great option to travel to Castries, with average flight prices from Seattle averaging around $608.
What is the cheapest day to depart on your flight to Castries?
The cheapest day to depart from Seattle to Castries is on a Monday when prices can be found for as low as $643. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,013. These prices are subject to change though, so be sure to set up a Price Alert for flights to Castries.
When to book flights from Seattle to Castries
Cheap Seattle to Castries (SEA to UVF) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Castries
How far is Seattle/Tacoma Intl to Castries Hewanorra by plane?
The distance between Seattle/Tacoma Intl and Castries Hewanorra is about 4177.3 mi. Typically, this will take 11h 59m by plane in normal conditions.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Castries Hewanorra Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Castries Hewanorra Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Castries Hewanorra Airport?
As of February 2025, there are 2 operators available to choose from for flights from Seattle/Tacoma Intl Airport to Castries Hewanorra Airport.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Castries Hewanorra Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Castries Hewanorra Airport.
What documentation or ID do you need to fly to Castries Hewanorra Airport?
The required travel and health documents for your Castries Hewanorra Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Castries Hewanorra Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Seattle to Castries?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Castries is American Airlines (82% of total bookings). The next most popular airline is Delta (18%).
Best airlines flying from Seattle to Castries
Compare and see reviews for airlines that fly from Seattle to Castries with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $407 | Free Cancellation | Rating 8.0 8,406 reviews | |||
| PriceFrom $529 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near Castries?
Book flights to Castries if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Seattle to Castries?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Castries. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Seattle to Castries with flexible booking policies on momondo?
momondo does allow users to show only those flights to Castries from Seattle which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Seattle to Castries?
momondo provides multiple filters to help you find the best flight to Castries from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Seattle to Castries right now. Can momondo alert me if prices change?
Price alerts on flights to Castries from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.