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Cheap flights from Seattle to Castries from $251

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 12/9. 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 Seattle to Castries

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
4:05 pm - 3:05 pmSEA-UVF
19h 00m1 stop
Delta Logo
4:25 pm - 10:07 amUVF-SEA
21h 42m1 stop
$491Delta
Find Deal
Paz, Oca 18 - Per, Oca 29
American Airlines Logo
11:11 pm - 4:02 pmSEA-UVF
12h 51m1 stop
American Airlines Logo
5:02 pm - 9:37 amUVF-SEA
20h 35m2 stops
$496American Airlines
Find Deal
Paz, Oca 18 - Per, Oca 29
Delta Logo
4:05 pm - 3:05 pmSEA-UVF
19h 00m1 stop
Delta Logo
4:25 pm - 10:07 amUVF-SEA
21h 42m1 stop
$552Delta
Find Deal
Pzt, Oca 5 - Per, Oca 22
American Airlines Logo
10:13 pm - 3:03 pmSEA-UVF
12h 50m1 stop
American Airlines Logo
5:02 pm - 11:45 amUVF-SEA
22h 43m2 stops
$622American Airlines
Find Deal
Pzt, Oca 5 - Per, Oca 22
Delta Logo
3:47 pm - 3:30 pmSEA-UVF
19h 43m1 stop
Delta Logo
4:25 pm - 10:09 amUVF-SEA
21h 44m1 stop
$642Delta
Find Deal
Çar, Ara 31 - Çar, Oca 7
Air Canada Logo
8:00 pm - 4:20 pmSEA-UVF
40h 20m2 stops
Air Canada Logo
5:15 pm - 7:16 pmUVF-SEA
30h 01m2 stops
$668Air Canada
Find Deal
Pzt, Ara 1 - Çar, Ara 10
American Airlines Logo
1:47 pm - 3:00 pmSEA-UVF
21h 13m1 stop
American Airlines Logo
4:54 pm - 11:30 amUVF-SEA
22h 36m1 stop
$697American Airlines
Find Deal
Per, Ara 11 - Pzt, Ara 22
American Airlines Logo
10:13 pm - 4:02 pmSEA-UVF
13h 49m2 stops
American Airlines Logo
4:06 pm - 11:01 amUVF-SEA
22h 55m2 stops
$718American Airlines
Find Deal
Pzt, Oca 5 - Per, Oca 22
Multiple Airlines Logo
5:50 am - 2:50 pmSEA-UVF
29h 00m3 stops
Multiple Airlines Logo
5:15 pm - 2:31 pmUVF-SEA
25h 16m2 stops
$734Multiple Airlines
Find Deal
Çar, Oca 21 - Çar, Oca 28
Delta Logo
10:55 pm - 3:05 pmSEA-UVF
12h 10m1 stop
Delta Logo
4:25 pm - 10:07 amUVF-SEA
21h 42m1 stop
$758Delta
Find Deal
Pzt, Oca 5 - Paz, Oca 18

Delta flights from Seattle to Castries

Our best Delta deals on Seattle to Castries flight tickets
Delta
Jan 18
SEA4:05 pmSeattle/Tacoma Intl
19h 00m
1 stop
UVF3:05 pmCastries Hewanorra
Jan 29
UVF4:25 pmCastries Hewanorra
21h 42m
1 stop
SEA10:07 amSeattle/Tacoma Intl
$491
Find similar
Delta
Jan 5
SEA4:05 pmSeattle/Tacoma Intl
19h 00m
1 stop
UVF3:05 pmCastries Hewanorra
Jan 22
UVF4:25 pmCastries Hewanorra
21h 42m
1 stop
SEA10:07 amSeattle/Tacoma Intl
$552
Find similar
Delta
Dec 31
SEA3:47 pmSeattle/Tacoma Intl
19h 43m
1 stop
UVF3:30 pmCastries Hewanorra
Jan 7
UVF4:25 pmCastries Hewanorra
21h 44m
1 stop
SEA10:09 amSeattle/Tacoma Intl
$642
Find similar

American Airlines flights from Seattle to Castries

Our best American Airlines deals on Seattle to Castries flight tickets
American Airlines
Jan 18
SEA11:11 pmSeattle/Tacoma Intl
12h 51m
1 stop
UVF4:02 pmCastries Hewanorra
Jan 29
UVF5:02 pmCastries Hewanorra
20h 35m
2 stops
SEA9:37 amSeattle/Tacoma Intl
$496
Find similar
American Airlines
Jan 5
SEA10:13 pmSeattle/Tacoma Intl
12h 50m
1 stop
UVF3:03 pmCastries Hewanorra
Jan 22
UVF5:02 pmCastries Hewanorra
22h 43m
2 stops
SEA11:45 amSeattle/Tacoma Intl
$622
Find similar
American Airlines
Dec 11
SEA1:47 pmSeattle/Tacoma Intl
21h 13m
1 stop
UVF3:00 pmCastries Hewanorra
Dec 22
UVF4:54 pmCastries Hewanorra
22h 36m
1 stop
SEA11:30 amSeattle/Tacoma Intl
$697
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Castries 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 Kasım 17, 2025.
Use the filters below to find and compare flights from Seattle to Castries that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Paz 1/18

4:05 pm-3:05 pm

1 stop19h 00m

Castries Hewanorra

Per 1/29

4:25 pm-10:07 am

1 stop21h 42m

$491

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Paz 1/18

11:11 pm-4:02 pm

1 stop12h 51m

Castries Hewanorra

Per 1/29

5:02 pm-9:37 am

2 stops20h 35m

$496

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Pzt 1/5

4:05 pm-3:05 pm

1 stop19h 00m

Castries Hewanorra

Per 1/22

4:25 pm-10:07 am

1 stop21h 42m

$552

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Pzt 1/5

10:13 pm-3:03 pm

1 stop12h 50m

Castries Hewanorra

Per 1/22

5:02 pm-11:45 am

2 stops22h 43m

$622

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Çar 12/31

3:47 pm-3:30 pm

1 stop19h 43m

Castries Hewanorra

Çar 1/7

4:25 pm-10:09 am

1 stop21h 44m

$642

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Pzt 12/1

8:00 pm-4:20 pm

2 stops40h 20m

Castries Hewanorra

Çar 12/10

5:15 pm-7:16 pm

2 stops30h 01m

$668

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Per 12/11

1:47 pm-3:00 pm

1 stop21h 13m

Castries Hewanorra

Pzt 12/22

4:54 pm-11:30 am

1 stop22h 36m

$697

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Pzt 1/5

10:13 pm-4:02 pm

2 stops13h 49m

Castries Hewanorra

Per 1/22

4:06 pm-11:01 am

2 stops22h 55m

$718

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Çar 1/21

5:50 am-2:50 pm

3 stops29h 00m

Castries Hewanorra

Çar 1/28

5:15 pm-2:31 pm

2 stops25h 16m

$734

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Pzt 1/5

10:55 pm-3:05 pm

1 stop12h 10m

Castries Hewanorra

Paz 1/18

4:25 pm-10:07 am

1 stop21h 42m

$758

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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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 January is, on average, the cheapest month to fly to Castries from Seattle, with most prices found around $583. The month of September is another great option to travel to Castries, with average flight prices from Seattle averaging around $613.

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.

What is the cheapest time of day to depart on your flight to Castries?

According to our data, the cheapest time of day to fly to Castries is in the afternoon. momondo users have found flights departing from Seattle to Castries in the afternoon for as low as $597. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Castries are more costly in the evening, with an average ticket price of $825. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Seattle to Castries

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

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

Direct flights

None
There are no direct flights from Seattle to Castries. There are no popular flight routes from Seattle to Castries.
Search flight deals

  • 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 10h 58m 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?

  • 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?

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
American AirlinesPriceFrom $615Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights

Traveling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Vieux Fort

Why 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.

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1 adult
Çar 12/17
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Find better results for your trip to Saint Lucia

Airports servicing Saint Lucia

Castries George F. L. Charle Airport