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?

On the Houston George Bush Intcntl Airport to Castries route, being flexible with your departure day can save you up to 29%. Sunday is the cheapest day at $1,213 round-trip on average, while Thursday is the most expensive at $1,687: a $474 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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.

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

Castries is 1 hour ahead of Houston George Bush Intcntl Airport (Atlantic Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

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 starting from around $14 for economy cars. Top options include: • Ace • Drive A Matic • Final Rentals • Sixt • Hertz

Cheap Flights from Houston to Castries | KAYAK

Save 21% 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.

Cheapest round-trip

$847

Typical prices: $1,213-$1,687

Multiple Airlines

Sat 11/17Fri 11/30

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

Cheap Flights from Houston to Castries (IAH-SLU)

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

Round-trip

One-way

Recent round-trip flight deals from Houston to Castries

Tue, Nov 17 - Mon, Nov 30

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

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

$847Multiple Airlines

Fri, Oct 30 - Thu, Nov 5

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

3:45 pm - 10:58 amSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

45h 13m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

$914Multiple Airlines

Thu, Nov 19 - Mon, Nov 23

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

12:35 pm - 10:58 amSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

24h 23m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

$933Multiple Airlines

Mon, Nov 16 - Sun, Nov 29

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

12:35 pm - 9:39 pmSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

35h 04m2 stops Bridgetown Grantley Adams Intl Montreal Pierre Elliott Trudeau Intl

$936Multiple Airlines

Mon, Nov 16 - Sun, Nov 29

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

12:35 pm - 9:39 pmSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

35h 04m3 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$948Multiple Airlines

Thu, Nov 19 - Mon, Nov 23

11:55 am - 7:00 pmIAH Houston George Bush Intcntl-SLU Castries George F. L. Charle

29h 05m2 stops Toronto Pearson Intl Bridgetown Grantley Adams Intl

12:35 pm - 9:39 pmSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

35h 04m3 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$957Multiple Airlines

Thu, Nov 19 - Mon, Nov 23

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

12:35 pm - 9:39 pmSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

35h 04m3 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,010Multiple Airlines

Thu, Nov 19 - Mon, Nov 23

11:55 am - 3:15 pmIAH Houston George Bush Intcntl-SLU Castries George F. L. Charle

25h 20m3 stops Toronto Pearson Intl Port of Spain Piarco Intl Bridgetown Grantley Adams Intl

12:35 pm - 10:58 amSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

24h 23m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

$1,052Multiple Airlines

Thu, Nov 19 - Mon, Nov 23

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

12:35 pm - 10:58 amSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

24h 23m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

$1,081Multiple Airlines

Fri, Nov 6 - Mon, Nov 9

3:30 pm - 7:00 pmIAH Houston George Bush Intcntl-SLU Castries George F. L. Charle

25h 30m3 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl Bridgetown Grantley Adams Intl

12:35 pm - 10:58 amSLU Castries George F. L. Charle-IAH Houston George Bush Intcntl

24h 23m2 stops Bridgetown Grantley Adams Intl Toronto Pearson Intl

$1,140Multiple Airlines

Useful Info

Cheapest flight	$496

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

KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

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?
On the Houston George Bush Intcntl Airport to Castries route, being flexible with your departure day can save you up to 29%. Sunday is the cheapest day at $1,213 round-trip on average, while Thursday is the most expensive at $1,687: a $474 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.
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 $847 to $5,566. That means the highest observed fare was about 7x higher than the lowest one.
What is the time difference between Houston George Bush Intcntl Airport and Castries?
Castries is 1 hour ahead of Houston George Bush Intcntl Airport (Atlantic Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.
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 starting from around $14 for economy cars. Top options include:
• Ace
• Drive A Matic
• Final Rentals
• Sixt
• Hertz

If your dates can be flexible, aim for a Sunday departure instead of Thursday. On this route, Sunday flights average $1,213 - about $474 less than Thursday (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
- Auberge Seraphine

More options for your flight from Houston to Castries

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Other destinations

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

Car rentals in Castries

Hotels in Castries

IAH - SLU

$496 Find Cheap Flights from Houston to Castries - Compare and Save

Everything you should know

Cheap Flights from Houston to Castries (IAH-SLU)

Recent round-trip flight deals from Houston to Castries

Recent one-way flight deals from Houston to Castries

Key details for Houston George Bush Intcntl Airport to Castries flights

Cheapest flight

When to book flights from Houston to Castries

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

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

More options for your flight from Houston to Castries

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

Information on your arrival and departure airports

Cabin class types available on flights to Castries

Find direct flights to and from Houston and Castries

Flights to other popular destinations