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Cheap flights from Seattle to Saint Lucia from $501

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Saint Lucia departing on 1/18. 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 Saint Lucia

Cheap round-trip flights

American Airlines Logo
10:57 pm - 3:50 pmSEA-UVF
12h 53m1 stop
American Airlines Logo
5:10 pm - 11:56 amUVF-SEA
22h 46m1 stop
$501American Airlines
Find Deal
Sun, Jan 18 - Thu, Jan 29
American Airlines Logo
10:57 pm - 2:30 pmSEA-UVF
11h 33m1 stop
American Airlines Logo
5:10 pm - 12:32 pmUVF-SEA
23h 22m2 stops
$506American Airlines
Find Deal
Sun, Jan 18 - Thu, Jan 29
Delta Logo
11:35 pm - 3:04 pmSEA-UVF
11h 29m1 stop
Delta Logo
4:24 pm - 10:29 amUVF-SEA
22h 05m1 stop
$606Delta
Find Deal
Sat, Feb 7 - Sat, Feb 14
Air Canada Logo
8:00 pm - 4:25 pmSEA-UVF
40h 25m2 stops
Air Canada Logo
5:15 pm - 2:31 pmUVF-SEA
25h 16m2 stops
$616Air Canada
Find Deal
Mon, Dec 1 - Wed, Dec 10
American Airlines Logo
1:56 pm - 2:15 pmSEA-UVF
20h 19m1 stop
American Airlines Logo
5:00 pm - 11:56 amUVF-SEA
22h 56m1 stop
$633American Airlines
Find Deal
Thu, Feb 19 - Mon, Feb 23
Multiple Airlines Logo
8:00 pm - 4:25 pmSEA-UVF
40h 25m2 stops
Multiple Airlines Logo
3:40 pm - 2:20 pmUVF-SEA
26h 40m2 stops
$659Multiple Airlines
Find Deal
Fri, Nov 14 - Tue, Nov 18
Air Canada Logo
5:45 am - 4:25 pmSEA-UVF
54h 40m2 stops
Air Canada Logo
5:15 pm - 2:31 pmUVF-SEA
25h 16m2 stops
$686Air Canada
Find Deal
Mon, Dec 1 - Wed, Dec 10
Delta Logo
3:40 pm - 3:39 pmSEA-UVF
19h 59m1 stop
Delta Logo
4:59 pm - 10:15 amUVF-SEA
21h 16m1 stop
$795Delta
Find Deal
Fri, Nov 14 - Tue, Nov 18
Multiple Airlines Logo
3:10 pm - 3:25 pmSEA-UVF
21h 15m3 stops
Multiple Airlines Logo
3:40 pm - 9:31 amUVF-SEA
21h 51m2 stops
$836Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
WestJet Logo
3:10 pm - 2:50 pmSEA-UVF
43h 40m2 stops
WestJet Logo
3:40 pm - 2:20 pmUVF-SEA
50h 40m2 stops
$1,070WestJet
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Fri, Nov 14 - Tue, Nov 18

Delta flights from Seattle to Saint Lucia

Our best Delta deals on Seattle to Saint Lucia flight tickets
Delta
Feb 7
SEA11:35 pmSeattle/Tacoma Intl
11h 29m
1 stop
UVF3:04 pmCastries Hewanorra
Feb 14
UVF4:24 pmCastries Hewanorra
22h 05m
1 stop
SEA10:29 amSeattle/Tacoma Intl
$606
Find similar
Delta
Nov 14
SEA3:40 pmSeattle/Tacoma Intl
19h 59m
1 stop
UVF3:39 pmCastries Hewanorra
Nov 18
UVF4:59 pmCastries Hewanorra
21h 16m
1 stop
SEA10:15 amSeattle/Tacoma Intl
$795
Find similar
Delta
Dec 1
SEA3:40 pmSeattle/Tacoma Intl
19h 58m
1 stop
UVF3:38 pmCastries Hewanorra
Dec 10
UVF4:59 pmCastries Hewanorra
21h 19m
1 stop
SEA10:18 amSeattle/Tacoma Intl
$977
Find similar

Air Canada flights from Seattle to Saint Lucia

Our best Air Canada deals on Seattle to Saint Lucia flight tickets
Air Canada
Dec 1
SEA8:00 pmSeattle/Tacoma Intl
40h 25m
2 stops
UVF4:25 pmCastries Hewanorra
Dec 10
UVF5:15 pmCastries Hewanorra
25h 16m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$616
Find similar
Air Canada
Dec 1
SEA5:45 amSeattle/Tacoma Intl
54h 40m
2 stops
UVF4:25 pmCastries Hewanorra
Dec 10
UVF5:15 pmCastries Hewanorra
25h 16m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$686
Find similar
Air Canada
Dec 1
SEA5:45 amSeattle/Tacoma Intl
54h 40m
2 stops
UVF4:25 pmCastries Hewanorra
Dec 10
UVF5:15 pmCastries Hewanorra
32h 51m
2 stops
SEA10:06 pmSeattle/Tacoma Intl
$690
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Saint Lucia 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 Seattle to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 1/18

10:57 pm-3:50 pm

1 stop12h 53m

Castries Hewanorra

Thu 1/29

5:10 pm-11:56 am

1 stop22h 46m

$501

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 1/18

10:57 pm-2:30 pm

1 stop11h 33m

Castries Hewanorra

Thu 1/29

5:10 pm-12:32 pm

2 stops23h 22m

$506

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 2/7

11:35 pm-3:04 pm

1 stop11h 29m

Castries Hewanorra

Sat 2/14

4:24 pm-10:29 am

1 stop22h 05m

$606

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 12/1

8:00 pm-4:25 pm

2 stops40h 25m

Castries Hewanorra

Wed 12/10

5:15 pm-2:31 pm

2 stops25h 16m

$616

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 2/19

1:56 pm-2:15 pm

1 stop20h 19m

Castries Hewanorra

Mon 2/23

5:00 pm-11:56 am

1 stop22h 56m

$633

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 11/14

8:00 pm-4:25 pm

2 stops40h 25m

Castries Hewanorra

Tue 11/18

3:40 pm-2:20 pm

2 stops26h 40m

$659

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 12/1

5:45 am-4:25 pm

2 stops54h 40m

Castries Hewanorra

Wed 12/10

5:15 pm-2:31 pm

2 stops25h 16m

$686

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 11/14

3:40 pm-3:39 pm

1 stop19h 59m

Castries Hewanorra

Tue 11/18

4:59 pm-10:15 am

1 stop21h 16m

$795

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 10/30

3:10 pm-3:25 pm

3 stops21h 15m

Castries Hewanorra

Thu 11/6

3:40 pm-9:31 am

2 stops21h 51m

$836

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 11/14

3:10 pm-2:50 pm

2 stops43h 40m

Castries Hewanorra

Tue 11/18

3:40 pm-2:20 pm

2 stops50h 40m

$1,070

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Saint Lucia from

How to get the cheapest flight ticket from Seattle to Saint Lucia

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 day to depart on your flight to Saint Lucia?

Our data shows that Tuesday is the least expensive day to fly to Saint Lucia. Tickets to fly out on this day can be as low as $590. On the other hand, Sunday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $924.

Cheap Seattle to Saint Lucia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Saint Lucia

Direct flights

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

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Saint Lucia?

    Prices for flights from Seattle/Tacoma Intl Airport to Saint Lucia are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Saint Lucia?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Saint Lucia?

    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 Seattle/Tacoma Intl Airport to Saint Lucia.

  • What documentation or ID do you need to fly to Saint Lucia?

    The travel and health documents you'll need for your trip to Saint Lucia 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 Saint Lucia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Seattle to Saint Lucia

Compare and see reviews for airlines that fly from Seattle to Saint Lucia with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $675Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Saint Lucia?

It is quick and easy to find Seattle to Saint Lucia flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Saint Lucia that suits you.

Can I find flights from Seattle to Saint Lucia with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Saint Lucia flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to Saint Lucia?

momondo provides multiple filters to help you find the best flight to Saint Lucia 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 Saint Lucia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Saint Lucia from Seattle. 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.

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