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Cheap flights from Seattle to Saint Lucia from $233

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 Saint Lucia departing on 7/23. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Saint Lucia

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
9:42 pm - 2:19 pm
SEA
-
UVF
13h 37m
1 stop
American Airlines Logo
2:49 pm - 12:20 am
UVF
-
SEA
12h 31m
1 stop
$696American Airlines
Wed, Aug 12 - Wed, Aug 19
American Airlines Logo
8:21 pm - 2:19 pm
SEA
-
UVF
14h 58m
2 stops
American Airlines Logo
2:49 pm - 12:20 am
UVF
-
SEA
12h 31m
1 stop
$701American Airlines
Wed, Aug 12 - Wed, Aug 19
Air Canada Logo
7:05 pm - 4:40 pm
SEA
-
UVF
41h 35m
2 stops
Air Canada Logo
5:40 pm - 6:22 pm
UVF
-
SEA
28h 42m
2 stops
$704Air Canada
Mon, Nov 30 - Wed, Dec 9
Air Canada Logo
3:15 pm - 4:25 pm
SEA
-
UVF
45h 10m
2 stops
Air Canada Logo
5:25 pm - 6:22 pm
UVF
-
SEA
28h 57m
2 stops
$752Air Canada
Sat, Nov 21 - Wed, Dec 2
American Airlines Logo
10:08 pm - 1:21 pm
SEA
-
UVF
11h 13m
1 stop
American Airlines Logo
2:23 pm - 11:16 pm
UVF
-
SEA
12h 53m
1 stop
$770American Airlines
Mon, Nov 30 - Wed, Dec 9
Air Canada Logo
7:45 am - 4:40 pm
SEA
-
UVF
28h 55m
1 stop
Air Canada Logo
5:40 pm - 8:59 pm
UVF
-
SEA
31h 19m
1 stop
$801Air Canada
Sat, Nov 21 - Wed, Dec 2
Multiple Airlines Logo
3:10 pm - 2:50 pm
SEA
-
UVF
19h 40m
3 stops
Multiple Airlines Logo
5:40 pm - 2:37 pm
UVF
-
SEA
24h 57m
2 stops
$870Multiple Airlines
Mon, Nov 30 - Wed, Dec 9
JetBlue Logo
10:19 pm - 3:22 pm
SEA
-
UVF
14h 03m
1 stop
JetBlue Logo
1:59 pm - 9:08 pm
UVF
-
SEA
34h 09m
1 stop
$882JetBlue
Tue, Aug 4 - Wed, Aug 12
JetBlue Logo
10:19 pm - 3:22 pm
SEA
-
UVF
14h 03m
1 stop
JetBlue Logo
1:59 pm - 9:08 pm
UVF
-
SEA
34h 09m
1 stop
$905JetBlue
Tue, Aug 4 - Wed, Aug 12
Multiple Airlines Logo
9:30 pm - 4:05 pm
SEA
-
SLU
38h 35m
2 stops
Multiple Airlines Logo
10:15 am - 10:15 am
SLU
-
SEA
28h 00m
2 stops
$1,162Multiple Airlines
Sat, Nov 21 - Wed, Dec 2

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Air Canada flights from Seattle to Saint Lucia

Our best Air Canada deals on Seattle to Saint Lucia flight tickets
Air Canada
Nov 30
SEA7:05 pmSeattle/Tacoma Intl
41h 35m
2 stops
UVF4:40 pmCastries Hewanorra
Dec 9
UVF5:40 pmCastries Hewanorra
28h 42m
2 stops
SEA6:22 pmSeattle/Tacoma Intl
$704
Air Canada
Nov 21
SEA3:15 pmSeattle/Tacoma Intl
45h 10m
2 stops
UVF4:25 pmCastries Hewanorra
Dec 2
UVF5:25 pmCastries Hewanorra
28h 57m
2 stops
SEA6:22 pmSeattle/Tacoma Intl
$752
Air Canada
Nov 21
SEA7:45 amSeattle/Tacoma Intl
28h 55m
1 stop
UVF4:40 pmCastries Hewanorra
Dec 2
UVF5:40 pmCastries Hewanorra
31h 19m
1 stop
SEA8:59 pmSeattle/Tacoma Intl
$801

American Airlines flights from Seattle to Saint Lucia

Our best American Airlines deals on Seattle to Saint Lucia flight tickets
American Airlines
Aug 12
SEA9:42 pmSeattle/Tacoma Intl
13h 37m
1 stop
UVF2:19 pmCastries Hewanorra
Aug 19
UVF2:49 pmCastries Hewanorra
12h 31m
1 stop
SEA12:20 amSeattle/Tacoma Intl
$696
American Airlines
Aug 12
SEA8:21 pmSeattle/Tacoma Intl
14h 58m
2 stops
UVF2:19 pmCastries Hewanorra
Aug 19
UVF2:49 pmCastries Hewanorra
12h 31m
1 stop
SEA12:20 amSeattle/Tacoma Intl
$701
American Airlines
Jul 6
SEA9:35 pmSeattle/Tacoma Intl
13h 45m
1 stop
UVF2:20 pmCastries Hewanorra
Jul 12
UVF2:50 pmCastries Hewanorra
12h 17m
1 stop
SEA12:07 amSeattle/Tacoma Intl
$731

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 June 30, 2026.
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

Cheapest round-trip

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 8/12

9:42 pm-2:19 pm

1 stop13h 37m

Castries Hewanorra

Wed 8/19

2:49 pm-12:20 am

1 stop12h 31m

$696

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 8/12

8:21 pm-2:19 pm

2 stops14h 58m

Castries Hewanorra

Wed 8/19

2:49 pm-12:20 am

1 stop12h 31m

$701

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 11/30

7:05 pm-4:40 pm

2 stops41h 35m

Castries Hewanorra

Wed 12/9

5:40 pm-6:22 pm

2 stops28h 42m

$704

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 11/21

3:15 pm-4:25 pm

2 stops45h 10m

Castries Hewanorra

Wed 12/2

5:25 pm-6:22 pm

2 stops28h 57m

$752
Quickest round-trip

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 11/30

10:08 pm-1:21 pm

1 stop11h 13m

Castries Hewanorra

Wed 12/9

2:23 pm-11:16 pm

1 stop12h 53m

$770

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sat 11/21

7:45 am-4:40 pm

1 stop28h 55m

Castries Hewanorra

Wed 12/2

5:40 pm-8:59 pm

1 stop31h 19m

$801

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 11/30

3:10 pm-2:50 pm

3 stops19h 40m

Castries Hewanorra

Wed 12/9

5:40 pm-2:37 pm

2 stops24h 57m

$870

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 8/4

10:19 pm-3:22 pm

1 stop14h 03m

Castries Hewanorra

Wed 8/12

1:59 pm-9:08 pm

1 stop34h 09m

$882

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 8/4

10:19 pm-3:22 pm

1 stop14h 03m

Castries Hewanorra

Wed 8/12

1:59 pm-9:08 pm

1 stop34h 09m

$905

SeattleCastries

SEA - SLU

SEASLU

Seattle/Tacoma Intl

Sat 11/21

9:30 pm-4:05 pm

2 stops38h 35m

Castries George F. L. Charle

Wed 12/2

10:15 am-10:15 am

2 stops28h 00m

$1,162

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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 month to fly to Saint Lucia?

The month of February is, on average, the cheapest month to fly to Saint Lucia from Seattle, with most prices found around $0. If you aren’t able to travel to Saint Lucia during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $491.

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

Fastest flight time

13h 47m

Direct flights

None
The fastest flight from Seattle to Saint Lucia takes 13h 47m
There are no direct flights from Seattle to Saint Lucia. There are no popular flight routes from Seattle to Saint Lucia.
Search flight deals

Frequently asked questions about flying from Seattle to Saint Lucia

  • 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 $668Free CancellationRating
7.1
11,768 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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