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Cheap flights from Seattle to Saint Lucia from $280

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 5/27. 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

Enter your travel dates to find the best prices.
Air Canada Logo
8:00 am - 2:20 pm
SEA
-
UVF
27h 20m
1 stop
Air Canada Logo
3:05 pm - 9:07 pm
UVF
-
SEA
33h 02m
1 stop
$720Air Canada
Thu, Aug 6 - Tue, Aug 11
American Airlines Logo
2:55 pm - 3:00 pm
SEA
-
UVF
20h 05m
2 stops
American Airlines Logo
4:50 pm - 7:15 pm
UVF
-
SEA
30h 25m
2 stops
$736American Airlines
Mon, Nov 9 - Tue, Nov 17
Delta Logo
3:55 pm - 3:10 pm
SEA
-
UVF
19h 15m
1 stop
Delta Logo
4:25 pm - 10:26 am
UVF
-
SEA
22h 01m
1 stop
$752Delta
Mon, Nov 9 - Wed, Nov 18
Delta Logo
3:55 pm - 3:10 pm
SEA
-
UVF
19h 15m
1 stop
Delta Logo
4:25 pm - 10:26 am
UVF
-
SEA
22h 01m
1 stop
$763Delta
Mon, Nov 9 - Thu, Nov 19
JetBlue Logo
11:52 pm - 3:35 pm
SEA
-
UVF
12h 43m
1 stop
JetBlue Logo
2:10 pm - 8:40 pm
UVF
-
SEA
33h 30m
1 stop
$785JetBlue
Fri, Jun 5 - Wed, Jun 10
American Airlines Logo
3:28 pm - 2:04 pm
SEA
-
UVF
19h 36m
2 stops
American Airlines Logo
4:00 pm - 9:28 am
UVF
-
SEA
20h 28m
2 stops
$801American Airlines
Tue, Sep 1 - Fri, Sep 18
American Airlines Logo
10:08 pm - 3:50 pm
SEA
-
UVF
13h 42m
1 stop
American Airlines Logo
2:28 pm - 11:40 pm
UVF
-
SEA
13h 12m
1 stop
$817American Airlines
Sun, Nov 8 - Thu, Nov 19
Delta Logo
3:55 pm - 3:10 pm
SEA
-
UVF
19h 15m
1 stop
Delta Logo
4:25 pm - 10:26 am
UVF
-
SEA
22h 01m
1 stop
$830Delta
Mon, Nov 9 - Tue, Nov 17
Multiple Airlines Logo
10:19 pm - 12:53 pm
SEA
-
UVF
11h 34m
1 stop
Multiple Airlines Logo
3:15 pm - 9:04 pm
UVF
-
SEA
32h 49m
1 stop
$851Multiple Airlines
Tue, Sep 1 - Fri, Sep 18
American Airlines Logo
2:55 pm - 3:00 pm
SEA
-
UVF
20h 05m
2 stops
American Airlines Logo
2:28 pm - 11:40 pm
UVF
-
SEA
13h 12m
1 stop
$861American Airlines
Mon, Nov 9 - Mon, Nov 23

WestJet flights from Seattle to Saint Lucia

Our best WestJet deals on Seattle to Saint Lucia flight tickets
WestJet
Jul 8
SEA7:00 amSeattle/Tacoma Intl
27h 40m
2 stops
UVF1:40 pmCastries Hewanorra
Jul 12
UVF2:30 pmCastries Hewanorra
46h 10m
2 stops
SEA9:40 amSeattle/Tacoma Intl
$997
WestJet
May 27
SEA7:35 pmSeattle/Tacoma Intl
15h 05m
2 stops
UVF1:40 pmCastries Hewanorra
May 31
UVF2:30 pmCastries Hewanorra
22h 10m
2 stops
SEA9:40 amSeattle/Tacoma Intl
$1,208

JetBlue flights from Seattle to Saint Lucia

Our best JetBlue deals on Seattle to Saint Lucia flight tickets
JetBlue
Jun 5
SEA11:52 pmSeattle/Tacoma Intl
12h 43m
1 stop
UVF3:35 pmCastries Hewanorra
Jun 10
UVF2:10 pmCastries Hewanorra
33h 30m
1 stop
SEA8:40 pmSeattle/Tacoma Intl
$785
JetBlue
May 27
SEA11:52 pmSeattle/Tacoma Intl
12h 43m
1 stop
UVF3:35 pmCastries Hewanorra
May 31
UVF2:10 pmCastries Hewanorra
33h 47m
1 stop
SEA8:57 pmSeattle/Tacoma Intl
$931
JetBlue
Jun 25
SEA10:28 pmSeattle/Tacoma Intl
11h 16m
1 stop
UVF12:44 pmCastries Hewanorra
Jul 2
UVF4:32 pmCastries Hewanorra
31h 36m
1 stop
SEA9:08 pmSeattle/Tacoma Intl
$1,036

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 May 13, 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

Thu 8/6

8:00 am-2:20 pm

1 stop27h 20m

Castries Hewanorra

Tue 8/11

3:05 pm-9:07 pm

1 stop33h 02m

$720

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 11/9

2:55 pm-3:00 pm

2 stops20h 05m

Castries Hewanorra

Tue 11/17

4:50 pm-7:15 pm

2 stops30h 25m

$736

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 11/9

3:55 pm-3:10 pm

1 stop19h 15m

Castries Hewanorra

Wed 11/18

4:25 pm-10:26 am

1 stop22h 01m

$752

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 11/9

3:55 pm-3:10 pm

1 stop19h 15m

Castries Hewanorra

Thu 11/19

4:25 pm-10:26 am

1 stop22h 01m

$763

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Fri 6/5

11:52 pm-3:35 pm

1 stop12h 43m

Castries Hewanorra

Wed 6/10

2:10 pm-8:40 pm

1 stop33h 30m

$785

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 9/1

3:28 pm-2:04 pm

2 stops19h 36m

Castries Hewanorra

Fri 9/18

4:00 pm-9:28 am

2 stops20h 28m

$801
Quickest round-trip

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Sun 11/8

10:08 pm-3:50 pm

1 stop13h 42m

Castries Hewanorra

Thu 11/19

2:28 pm-11:40 pm

1 stop13h 12m

$817

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 11/9

3:55 pm-3:10 pm

1 stop19h 15m

Castries Hewanorra

Tue 11/17

4:25 pm-10:26 am

1 stop22h 01m

$830

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Tue 9/1

10:19 pm-12:53 pm

1 stop11h 34m

Castries Hewanorra

Fri 9/18

3:15 pm-9:04 pm

1 stop32h 49m

$851

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 11/9

2:55 pm-3:00 pm

2 stops20h 05m

Castries Hewanorra

Mon 11/23

2:28 pm-11:40 pm

1 stop13h 12m

$861

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 July 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 July, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $0.

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

11h 34m

Direct flights

None
The fastest flight from Seattle to Saint Lucia takes 11h 34m
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
DeltaPriceFrom $264Free CancellationRating
7.9
8,453 reviews
Search Delta flights
American AirlinesPriceFrom $752Free CancellationRating
7.1
11,664 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.

An easier way to manage your Saint Lucia trip

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