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Cheap flights from Idaho to Saint Lucia from $731

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Saint Lucia departing on 8/26. 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

Find the cheapest flights from Idaho to Saint Lucia

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:59 pm - 2:14 pm
BOI
-
UVF
18h 15m
2 stops
Delta Logo
3:34 pm - 1:42 pm
UVF
-
BOI
24h 08m
2 stops
$731Delta
Wed, Aug 26 - Wed, Sep 2
Delta Logo
11:10 pm - 2:14 pm
BOI
-
UVF
13h 04m
1 stop
Delta Logo
3:34 pm - 1:42 pm
UVF
-
BOI
24h 08m
2 stops
$911Delta
Mon, Aug 3 - Tue, Aug 11
American Airlines Logo
3:54 pm - 1:50 pm
BOI
-
UVF
19h 56m
2 stops
American Airlines Logo
2:49 pm - 2:29 pm
UVF
-
BOI
25h 40m
2 stops
$955American Airlines
Mon, Aug 3 - Tue, Aug 11
Delta Logo
4:00 pm - 2:14 pm
BOI
-
UVF
20h 14m
2 stops
Delta Logo
3:34 pm - 1:42 pm
UVF
-
BOI
24h 08m
2 stops
$983Delta
Mon, Aug 3 - Tue, Aug 11
United Airlines Logo
1:45 pm - 2:15 pm
GEG
-
UVF
20h 30m
2 stops
United Airlines Logo
3:21 pm - 12:40 pm
UVF
-
GEG
49h 19m
2 stops
$1,106United Airlines
Wed, Dec 23 - Mon, Jan 4
United Airlines Logo
5:00 am - 2:15 pm
GEG
-
UVF
29h 15m
2 stops
United Airlines Logo
3:21 pm - 12:18 pm
UVF
-
GEG
24h 57m
2 stops
$1,139United Airlines
Wed, Dec 23 - Wed, Dec 30
United Airlines Logo
4:00 pm - 2:15 pm
GEG
-
UVF
42h 15m
2 stops
United Airlines Logo
3:21 pm - 3:19 pm
UVF
-
GEG
27h 58m
2 stops
$1,182United Airlines
Tue, Dec 22 - Mon, Jan 4
Delta Logo
1:30 pm - 3:15 pm
GEG
-
UVF
21h 45m
2 stops
Delta Logo
4:40 pm - 11:02 pm
UVF
-
GEG
34h 22m
2 stops
$1,263Delta
Wed, Dec 23 - Thu, Dec 31
American Airlines Logo
5:20 pm - 12:15 pm
BOI
-
UVF
16h 55m
2 stops
American Airlines Logo
2:49 pm - 11:16 am
UVF
-
BOI
22h 27m
3 stops
$3,190American Airlines
Mon, Aug 3 - Tue, Aug 11
American Airlines Logo
5:20 pm - 12:15 pm
BOI
-
UVF
16h 55m
2 stops
American Airlines Logo
2:49 pm - 11:16 am
UVF
-
BOI
22h 27m
3 stops
$3,220American Airlines
Mon, Aug 3 - Tue, Aug 11

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United Airlines flights from Idaho to Saint Lucia

Our best United Airlines deals on Idaho to Saint Lucia flight tickets
United Airlines
Dec 23
GEG1:45 pmSpokane
20h 30m
2 stops
UVF2:15 pmCastries Hewanorra
Jan 4
UVF3:21 pmCastries Hewanorra
49h 19m
2 stops
GEG12:40 pmSpokane
$1,106
United Airlines
Dec 23
GEG5:00 amSpokane
29h 15m
2 stops
UVF2:15 pmCastries Hewanorra
Dec 30
UVF3:21 pmCastries Hewanorra
24h 57m
2 stops
GEG12:18 pmSpokane
$1,139
United Airlines
Dec 22
GEG4:00 pmSpokane
42h 15m
2 stops
UVF2:15 pmCastries Hewanorra
Jan 4
UVF3:21 pmCastries Hewanorra
27h 58m
2 stops
GEG3:19 pmSpokane
$1,182

American Airlines flights from Idaho to Saint Lucia

Our best American Airlines deals on Idaho to Saint Lucia flight tickets
American Airlines
Aug 3
BOI3:54 pmBoise Air Term. Gowen Fld
19h 56m
2 stops
UVF1:50 pmCastries Hewanorra
Aug 11
UVF2:49 pmCastries Hewanorra
25h 40m
2 stops
BOI2:29 pmBoise Air Term. Gowen Fld
$955
American Airlines
Jul 14
GEG12:49 pmSpokane
22h 31m
2 stops
UVF2:20 pmCastries Hewanorra
Jul 24
UVF3:20 pmCastries Hewanorra
23h 39m
2 stops
GEG11:59 amSpokane
$1,297
American Airlines
Jul 14
GEG2:29 pmSpokane
20h 21m
2 stops
UVF1:50 pmCastries Hewanorra
Jul 24
UVF3:20 pmCastries Hewanorra
24h 49m
2 stops
GEG1:09 pmSpokane
$1,314

momondo Fare Finder

 
Customize your flight search to find flights from Idaho 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 July 6, 2026.
Use the filters below to find and compare flights from Idaho to Saint Lucia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseCastries

BOI - UVF

BOIUVF

Boise Air Term. Gowen Fld

Wed 8/26

5:59 pm-2:14 pm

2 stops18h 15m

Castries Hewanorra

Wed 9/2

3:34 pm-1:42 pm

2 stops24h 08m

$731
Quickest round-trip

BoiseCastries

BOI - UVF

BOIUVF

Boise Air Term. Gowen Fld

Mon 8/3

11:10 pm-2:14 pm

1 stop13h 04m

Castries Hewanorra

Tue 8/11

3:34 pm-1:42 pm

2 stops24h 08m

$911

BoiseCastries

BOI - UVF

BOIUVF

Boise Air Term. Gowen Fld

Mon 8/3

3:54 pm-1:50 pm

2 stops19h 56m

Castries Hewanorra

Tue 8/11

2:49 pm-2:29 pm

2 stops25h 40m

$955

BoiseCastries

BOI - UVF

BOIUVF

Boise Air Term. Gowen Fld

Mon 8/3

4:00 pm-2:14 pm

2 stops20h 14m

Castries Hewanorra

Tue 8/11

3:34 pm-1:42 pm

2 stops24h 08m

$983

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Wed 12/23

1:45 pm-2:15 pm

2 stops20h 30m

Castries Hewanorra

Mon 1/4

3:21 pm-12:40 pm

2 stops49h 19m

$1,106

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Wed 12/23

5:00 am-2:15 pm

2 stops29h 15m

Castries Hewanorra

Wed 12/30

3:21 pm-12:18 pm

2 stops24h 57m

$1,139

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Tue 12/22

4:00 pm-2:15 pm

2 stops42h 15m

Castries Hewanorra

Mon 1/4

3:21 pm-3:19 pm

2 stops27h 58m

$1,182

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Wed 12/23

1:30 pm-3:15 pm

2 stops21h 45m

Castries Hewanorra

Thu 12/31

4:40 pm-11:02 pm

2 stops34h 22m

$1,263

BoiseCastries

BOI - UVF

BOIUVF

Boise Air Term. Gowen Fld

Mon 8/3

5:20 pm-12:15 pm

2 stops16h 55m

Castries Hewanorra

Tue 8/11

2:49 pm-11:16 am

3 stops22h 27m

$3,190

BoiseCastries

BOI - UVF

BOIUVF

Boise Air Term. Gowen Fld

Mon 8/3

5:20 pm-12:15 pm

2 stops16h 55m

Castries Hewanorra

Tue 8/11

2:49 pm-11:16 am

3 stops22h 27m

$3,220

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Idaho to Saint Lucia flight deals and tips

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

Fastest flight time

13h 04m

Direct flights

None
The fastest flight from Idaho to Saint Lucia takes 13h 04m
There are no direct flights from Idaho to Saint Lucia. There are no popular flight routes from Idaho to Saint Lucia.
Search flight deals

Frequently asked questions about flying from Idaho to Saint Lucia

  • When did momondo last update prices for flights from Idaho to Saint Lucia?

    Prices for flights from Idaho to Saint Lucia are refreshed on a daily basis.

  • How old do you have to be to fly from Idaho to Saint Lucia?

    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 Idaho to Saint Lucia.

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

    The required travel and health documents for your Saint Lucia 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 Saint Lucia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Idaho to Saint Lucia

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

    Price Alerts will notify you by email when the price for flights to Saint Lucia from Idaho decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

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

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • 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 Idaho to Saint Lucia?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to Saint Lucia for you.

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

All flight searches from Idaho to Saint Lucia on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Saint Lucia from Idaho.

I’m not ready to book a flight from Idaho to Saint Lucia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Idaho to Saint Lucia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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