IAH - SLU

$718 Find Cheap Flights from Houston to Castries - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 26% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$898
Typical prices: $1,213-$1,687
Multiple Airlines
Sun 11/25Mon 12/3
IAH - SLU • 2 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Castries!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Houston to Castries (IAH-SLU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Houston to Castries

Wed, Nov 25 - Thu, Dec 3
Multiple Airlines Logo
3:30 pm - 7:00 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
25h 30m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl
Multiple Airlines Logo
12:35 pm - 10:53 amSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
24h 18m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl
$898Multiple Airlines
Thu, Dec 3 - Wed, Dec 9
Multiple Airlines Logo
3:30 pm - 7:00 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
25h 30m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl
Multiple Airlines Logo
12:35 pm - 10:53 amSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
24h 18m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl
$936Multiple Airlines
Mon, Mar 22 - Sat, Mar 27
Multiple Airlines Logo
12:00 pm - 7:00 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
30h 00m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl
Multiple Airlines Logo
9:10 am - 9:24 pmSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
37h 14m2 stops Bridgetown Grantley Adams Intl Montreal Pierre Elliott Trudeau Intl
$952Multiple Airlines
Thu, Dec 3 - Wed, Dec 9
Multiple Airlines Logo
11:34 am - 3:35 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
26h 01m3 stops Detroit Metropolitan Wayne County New York LaGuardia Port of Spain Piarco Intl
Multiple Airlines Logo
12:35 pm - 10:53 amSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
24h 18m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl
$1,036Multiple Airlines
Thu, Dec 3 - Wed, Dec 9
Multiple Airlines Logo
11:34 am - 3:35 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
26h 01m3 stops Detroit Metropolitan Wayne County New York LaGuardia Port of Spain Piarco Intl
Multiple Airlines Logo
4:50 pm - 11:46 amSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
20h 56m3 stops Port of Spain Piarco Intl New York John F Kennedy Intl Atlanta Hartsfield-Jackson
$1,137Multiple Airlines
Sat, Mar 20 - Sat, Mar 27
Multiple Airlines Logo
3:30 pm - 7:00 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
26h 30m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl
Multiple Airlines Logo
12:35 pm - 10:46 amSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
23h 11m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl
$1,142Multiple Airlines
Wed, Nov 25 - Thu, Dec 3
Multiple Airlines Logo
11:50 am - 7:00 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
29h 10m3 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl Bridgetown Grantley Adams Intl
Multiple Airlines Logo
6:00 pm - 5:18 pmSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
25h 18m2 stops Port of Spain Piarco Intl Toronto Pearson Intl
$1,340Multiple Airlines
Sat, Mar 20 - Sat, Mar 27
Multiple Airlines Logo
3:30 pm - 7:00 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
26h 30m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Bridgetown Grantley Adams Intl
Multiple Airlines Logo
12:35 pm - 10:46 amSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
23h 11m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl
$1,485Multiple Airlines
Sun, Mar 7 - Sat, Mar 13
Multiple Airlines Logo
3:30 pm - 7:00 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
25h 30m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl
Multiple Airlines Logo
12:35 pm - 9:48 amSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
23h 13m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl
$1,614Multiple Airlines
Thu, Mar 11 - Sun, Mar 14
Multiple Airlines Logo
3:30 pm - 7:00 pmIAH  Houston George Bush Intcntl-SLU Castries George F. L. Charle
25h 30m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl
Multiple Airlines Logo
12:35 pm - 10:48 amSLU  Castries George F. L. Charle-IAH Houston George Bush Intcntl
23h 13m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl
$1,640Multiple Airlines
Useful Info

Key details for Houston George Bush Intcntl Airport to Castries flights

Cheapest flight

$718
One-way flight from Houston George Bush Intcntl Airport to Castries

When to book flights from Houston to Castries

Are your dates flexible? Find out the best times to travel from Houston to Castries based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Houston George Bush Intcntl Airport to Castries flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Do I need a passport to fly from Houston George Bush Intcntl Airport to Castries?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Houston George Bush Intcntl Airport to Castries changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $898 to $3,807. That means the highest observed fare was about 4x higher than the lowest one.

  • What car rental options are available at Castries George F. L. Charle Airport (SLU)?

    Castries George F. L. Charle Airport (SLU) hosts 5 major car rental companies, with daily rates averaging $58 for economy cars. Top options include:

    • Ace
    • Drive A Matic
    • Final Rentals
    • Sixt
    • FlexWays

  • Which airports can I use when flying from Houston George Bush Intcntl Airport to Castries?

    Flights from Houston George Bush Intcntl Airport to Castries usually depart from Houston George Bush Intcntl (IAH) and arrive at Castries George F. L. Charle (SLU).

  • Can I save money by using flexible dates for flights from Houston George Bush Intcntl Airport to Castries?

    Yes. Flexible dates can save you up to 29% on flights from Houston George Bush Intcntl Airport to Castries. Sunday is the cheapest departure day at $1,213 round-trip on average, while Thursday is the most expensive at $1,687, a difference of $474.

    Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • What is the time difference between Houston George Bush Intcntl Airport and Castries?

    Castries is 2 hours ahead of Houston George Bush Intcntl Airport (Atlantic Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking Houston George Bush Intcntl Airport to Castries flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Sunday departure and avoid flying on Thursday. On this route, Sunday flights average $1,213, about $474 less than Thursday fares (28% savings) based on the last 12 months.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Castries George F. L. Charle Airport.

    • Stolen Time St. Lucia
    • Sandals Regency La Toc

More options for your flight from Houston to Castries

Complete your trip to Castries with a hotel stay or car rental

Car rentals in Castries
Hotels in Castries