Latest deals
FAQs
Price Alerts

Cheap flights from Idaho to Castries from $394

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Castries departing on 8/8. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Idaho to Castries

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:40 pm - 12:08 pm
BOI
-
UVF
16h 28m
2 stops
American Airlines Logo
3:15 pm - 2:02 pm
UVF
-
BOI
24h 47m
2 stops
$895American Airlines
Mon, Aug 3 - Tue, Aug 11
Delta Logo
11:42 pm - 2:12 pm
BOI
-
UVF
12h 30m
1 stop
Delta Logo
3:28 pm - 3:01 pm
UVF
-
BOI
25h 33m
2 stops
$898Delta
Mon, Aug 3 - Tue, Aug 11
American Airlines Logo
3:15 pm - 2:26 pm
GEG
-
UVF
20h 11m
2 stops
American Airlines Logo
3:28 pm - 2:19 pm
UVF
-
GEG
25h 51m
2 stops
$903American Airlines
Wed, May 6 - Wed, May 13
Air Canada Logo
12:35 pm - 3:10 pm
GEG
-
UVF
23h 35m
2 stops
Air Canada Logo
4:20 pm - 9:40 pm
UVF
-
GEG
32h 20m
2 stops
$1,102Air Canada
Sat, Apr 25 - Wed, Apr 29
Delta Logo
9:16 pm - 2:05 pm
BOI
-
UVF
14h 49m
2 stops
Delta Logo
3:25 pm - 11:56 am
UVF
-
BOI
22h 31m
2 stops
$1,139Delta
Mon, May 11 - Mon, May 18
Delta Logo
10:40 pm - 2:05 pm
GEG
-
UVF
12h 25m
1 stop
Delta Logo
3:25 pm - 12:13 pm
UVF
-
GEG
23h 48m
2 stops
$1,252Delta
Wed, May 6 - Wed, May 13
American Airlines Logo
3:15 pm - 1:48 pm
GEG
-
UVF
19h 33m
2 stops
American Airlines Logo
2:48 pm - 2:07 pm
UVF
-
GEG
26h 19m
2 stops
$1,254American Airlines
Wed, May 20 - Mon, May 25
American Airlines Logo
12:49 pm - 2:00 pm
GEG
-
UVF
22h 11m
2 stops
American Airlines Logo
3:14 pm - 1:07 pm
UVF
-
GEG
24h 53m
2 stops
$1,293American Airlines
Tue, Jul 14 - Fri, Jul 24
American Airlines Logo
12:49 pm - 2:00 pm
GEG
-
UVF
22h 11m
2 stops
American Airlines Logo
3:14 pm - 1:07 pm
UVF
-
GEG
24h 53m
2 stops
$1,313American Airlines
Tue, Jul 14 - Fri, Jul 24
Delta Logo
10:40 pm - 2:05 pm
GEG
-
UVF
12h 25m
1 stop
Delta Logo
3:25 pm - 3:33 pm
UVF
-
GEG
27h 08m
2 stops
$1,447Delta
Wed, May 20 - Mon, May 25

American Airlines flights from Idaho to Castries

Our best American Airlines deals on Idaho to Castries flight tickets
American Airlines
Aug 3
BOI5:40 pmBoise Air Term. Gowen Fld
16h 28m
2 stops
UVF12:08 pmCastries Hewanorra
Aug 11
UVF3:15 pmCastries Hewanorra
24h 47m
2 stops
BOI2:02 pmBoise Air Term. Gowen Fld
$895
American Airlines
May 6
GEG3:15 pmSpokane
20h 11m
2 stops
UVF2:26 pmCastries Hewanorra
May 13
UVF3:28 pmCastries Hewanorra
25h 51m
2 stops
GEG2:19 pmSpokane
$903
American Airlines
May 20
GEG3:15 pmSpokane
19h 33m
2 stops
UVF1:48 pmCastries Hewanorra
May 25
UVF2:48 pmCastries Hewanorra
26h 19m
2 stops
GEG2:07 pmSpokane
$1,254

Delta flights from Idaho to Castries

Our best Delta deals on Idaho to Castries flight tickets
Delta
Aug 3
BOI11:42 pmBoise Air Term. Gowen Fld
12h 30m
1 stop
UVF2:12 pmCastries Hewanorra
Aug 11
UVF3:28 pmCastries Hewanorra
25h 33m
2 stops
BOI3:01 pmBoise Air Term. Gowen Fld
$898
Delta
May 11
BOI9:16 pmBoise Air Term. Gowen Fld
14h 49m
2 stops
UVF2:05 pmCastries Hewanorra
May 18
UVF3:25 pmCastries Hewanorra
22h 31m
2 stops
BOI11:56 amBoise Air Term. Gowen Fld
$1,139
Delta
May 6
GEG10:40 pmSpokane
12h 25m
1 stop
UVF2:05 pmCastries Hewanorra
May 13
UVF3:25 pmCastries Hewanorra
23h 48m
2 stops
GEG12:13 pmSpokane
$1,252

momondo Fare Finder

 
Customize your flight search to find flights from Idaho to Castries 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 March 27, 2026.
Use the filters below to find and compare flights from Idaho to Castries 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

Mon 8/3

5:40 pm-12:08 pm

2 stops16h 28m

Castries Hewanorra

Tue 8/11

3:15 pm-2:02 pm

2 stops24h 47m

$895

BoiseCastries

BOI - UVF

BOIUVF

Boise Air Term. Gowen Fld

Mon 8/3

11:42 pm-2:12 pm

1 stop12h 30m

Castries Hewanorra

Tue 8/11

3:28 pm-3:01 pm

2 stops25h 33m

$898

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Wed 5/6

3:15 pm-2:26 pm

2 stops20h 11m

Castries Hewanorra

Wed 5/13

3:28 pm-2:19 pm

2 stops25h 51m

$903

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Sat 4/25

12:35 pm-3:10 pm

2 stops23h 35m

Castries Hewanorra

Wed 4/29

4:20 pm-9:40 pm

2 stops32h 20m

$1,102

BoiseCastries

BOI - UVF

BOIUVF

Boise Air Term. Gowen Fld

Mon 5/11

9:16 pm-2:05 pm

2 stops14h 49m

Castries Hewanorra

Mon 5/18

3:25 pm-11:56 am

2 stops22h 31m

$1,139
Quickest round-trip

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Wed 5/6

10:40 pm-2:05 pm

1 stop12h 25m

Castries Hewanorra

Wed 5/13

3:25 pm-12:13 pm

2 stops23h 48m

$1,252

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Wed 5/20

3:15 pm-1:48 pm

2 stops19h 33m

Castries Hewanorra

Mon 5/25

2:48 pm-2:07 pm

2 stops26h 19m

$1,254

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Tue 7/14

12:49 pm-2:00 pm

2 stops22h 11m

Castries Hewanorra

Fri 7/24

3:14 pm-1:07 pm

2 stops24h 53m

$1,293

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Tue 7/14

12:49 pm-2:00 pm

2 stops22h 11m

Castries Hewanorra

Fri 7/24

3:14 pm-1:07 pm

2 stops24h 53m

$1,313

SpokaneCastries

GEG - UVF

GEGUVF

Spokane

Wed 5/20

10:40 pm-2:05 pm

1 stop12h 25m

Castries Hewanorra

Mon 5/25

3:25 pm-3:33 pm

2 stops27h 08m

$1,447

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Cheap Idaho to Castries flight deals and tips

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

Fastest flight time

18h 26m

Direct flights

None
The fastest flight from Idaho to Castries takes 18h 26m
There are no direct flights from Idaho to Castries. There are no popular flight routes from Idaho to Castries.
Search flight deals

  • When did momondo last update prices for flights from Idaho to Castries Hewanorra Airport?

    Prices for flights from Idaho to Castries Hewanorra Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Idaho to Castries Hewanorra Airport?

    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 Castries Hewanorra Airport.

  • What documentation or ID do you need to fly to Castries Hewanorra Airport?

    The travel and health documents required for your trip to Castries Hewanorra Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Castries Hewanorra Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

    Price Alerts will notify you by email when the price for flights to Castries 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 Castries 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.

Traveling to a place near Castries?

Book flights to Castries if you plan to visit one of these locations
Vieux Fort

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Castries?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Idaho to Castries. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Castries from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Idaho to Castries?

Once all potential Idaho to Castries flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Castries from Idaho are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Castries trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 4/26
Sun 5/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Saint Lucia

Airports servicing Saint Lucia

Castries George F. L. Charle Airport