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Cheap flights from Seattle to Saint Lucia from $607

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 3/25. 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 - 3:25 pm
SEA
-
UVF
28h 25m
1 stop
Air Canada Logo
4:20 pm - 9:53 pm
UVF
-
SEA
32h 33m
1 stop
$607Air Canada
Wed, Mar 25 - Wed, Apr 1
Multiple Airlines Logo
3:40 pm - 1:46 pm
SEA
-
UVF
19h 06m
3 stops
Multiple Airlines Logo
2:40 pm - 2:19 pm
UVF
-
SEA
26h 39m
2 stops
$622Multiple Airlines
Wed, Apr 8 - Tue, Apr 14
Multiple Airlines Logo
10:20 am - 3:25 pm
SEA
-
UVF
26h 05m
2 stops
Multiple Airlines Logo
2:40 pm - 2:19 pm
UVF
-
SEA
26h 39m
2 stops
$643Multiple Airlines
Wed, Apr 8 - Tue, Apr 14
Air Canada Logo
5:40 am - 3:25 pm
SEA
-
UVF
30h 45m
2 stops
Air Canada Logo
4:15 pm - 9:53 pm
UVF
-
SEA
32h 38m
1 stop
$656Air Canada
Thu, Mar 26 - Thu, Apr 2
Air Canada Logo
5:40 am - 3:25 pm
SEA
-
UVF
30h 45m
2 stops
Air Canada Logo
4:20 pm - 3:03 pm
UVF
-
SEA
25h 43m
2 stops
$678Air Canada
Wed, Mar 25 - Wed, Apr 1
Multiple Airlines Logo
8:09 am - 1:46 pm
SEA
-
UVF
26h 37m
1 stop
Multiple Airlines Logo
2:40 pm - 2:19 pm
UVF
-
SEA
26h 39m
2 stops
$685Multiple Airlines
Mon, Apr 6 - Tue, Apr 14
Multiple Airlines Logo
8:09 am - 1:46 pm
SEA
-
UVF
26h 37m
1 stop
Multiple Airlines Logo
2:40 pm - 7:25 pm
UVF
-
SEA
31h 45m
1 stop
$702Multiple Airlines
Mon, Apr 6 - Tue, Apr 14
Multiple Airlines Logo
8:00 pm - 3:20 pm
SEA
-
UVF
40h 20m
2 stops
Multiple Airlines Logo
2:40 pm - 3:03 pm
UVF
-
SEA
27h 23m
3 stops
$705Multiple Airlines
Mon, Apr 6 - Tue, Apr 14
Multiple Airlines Logo
5:40 am - 3:20 pm
SEA
-
UVF
30h 40m
2 stops
Multiple Airlines Logo
2:40 pm - 3:03 pm
UVF
-
SEA
27h 23m
3 stops
$773Multiple Airlines
Thu, Apr 9 - Tue, Apr 14
American Airlines Logo
10:08 pm - 2:13 pm
SEA
-
UVF
13h 05m
1 stop
American Airlines Logo
3:13 pm - 9:35 am
UVF
-
SEA
21h 22m
2 stops
$779American Airlines
Mon, Apr 6 - Tue, Apr 14

American Airlines flights from Seattle to Saint Lucia

Our best American Airlines deals on Seattle to Saint Lucia flight tickets
American Airlines
Apr 6
SEA10:08 pmSeattle/Tacoma Intl
13h 05m
1 stop
UVF2:13 pmCastries Hewanorra
Apr 14
UVF3:13 pmCastries Hewanorra
21h 22m
2 stops
SEA9:35 amSeattle/Tacoma Intl
$779
American Airlines
Apr 6
SEA10:08 pmSeattle/Tacoma Intl
13h 05m
1 stop
UVF2:13 pmCastries Hewanorra
Apr 14
UVF3:13 pmCastries Hewanorra
24h 20m
1 stop
SEA12:33 pmSeattle/Tacoma Intl
$792
American Airlines
Apr 9
SEA10:29 pmSeattle/Tacoma Intl
12h 57m
1 stop
UVF2:26 pmCastries Hewanorra
Apr 14
UVF3:13 pmCastries Hewanorra
24h 20m
1 stop
SEA12:33 pmSeattle/Tacoma Intl
$813

Air Canada flights from Seattle to Saint Lucia

Our best Air Canada deals on Seattle to Saint Lucia flight tickets
Air Canada
Mar 25
SEA8:00 amSeattle/Tacoma Intl
28h 25m
1 stop
UVF3:25 pmCastries Hewanorra
Apr 1
UVF4:20 pmCastries Hewanorra
32h 33m
1 stop
SEA9:53 pmSeattle/Tacoma Intl
$607
Air Canada
Mar 26
SEA5:40 amSeattle/Tacoma Intl
30h 45m
2 stops
UVF3:25 pmCastries Hewanorra
Apr 2
UVF4:15 pmCastries Hewanorra
32h 38m
1 stop
SEA9:53 pmSeattle/Tacoma Intl
$656
Air Canada
Mar 25
SEA5:40 amSeattle/Tacoma Intl
30h 45m
2 stops
UVF3:25 pmCastries Hewanorra
Apr 1
UVF4:20 pmCastries Hewanorra
25h 43m
2 stops
SEA3:03 pmSeattle/Tacoma Intl
$678

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 February 11, 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

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 3/25

8:00 am-3:25 pm

1 stop28h 25m

Castries Hewanorra

Wed 4/1

4:20 pm-9:53 pm

1 stop32h 33m

$607

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 4/8

3:40 pm-1:46 pm

3 stops19h 06m

Castries Hewanorra

Tue 4/14

2:40 pm-2:19 pm

2 stops26h 39m

$622

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 4/8

10:20 am-3:25 pm

2 stops26h 05m

Castries Hewanorra

Tue 4/14

2:40 pm-2:19 pm

2 stops26h 39m

$643

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 3/26

5:40 am-3:25 pm

2 stops30h 45m

Castries Hewanorra

Thu 4/2

4:15 pm-9:53 pm

1 stop32h 38m

$656

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Wed 3/25

5:40 am-3:25 pm

2 stops30h 45m

Castries Hewanorra

Wed 4/1

4:20 pm-3:03 pm

2 stops25h 43m

$678

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 4/6

8:09 am-1:46 pm

1 stop26h 37m

Castries Hewanorra

Tue 4/14

2:40 pm-2:19 pm

2 stops26h 39m

$685

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 4/6

8:09 am-1:46 pm

1 stop26h 37m

Castries Hewanorra

Tue 4/14

2:40 pm-7:25 pm

1 stop31h 45m

$702

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 4/6

8:00 pm-3:20 pm

2 stops40h 20m

Castries Hewanorra

Tue 4/14

2:40 pm-3:03 pm

3 stops27h 23m

$705

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Thu 4/9

5:40 am-3:20 pm

2 stops30h 40m

Castries Hewanorra

Tue 4/14

2:40 pm-3:03 pm

3 stops27h 23m

$773

SeattleCastries

SEA - UVF

SEAUVF

Seattle/Tacoma Intl

Mon 4/6

10:08 pm-2:13 pm

1 stop13h 05m

Castries Hewanorra

Tue 4/14

3:13 pm-9:35 am

2 stops21h 22m

$779

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 28m

Direct flights

None
The fastest flight from Seattle to Saint Lucia takes 11h 28m
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 $668Free CancellationRating
7.2
11,267 reviews
Search American Airlines flights

  • How do I get Price Alerts for flights from Seattle to Saint Lucia?

    Confirm your travel details to search for the latest offers for flights from Seattle to Saint Lucia. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Seattle to Saint Lucia with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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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