$565 Cheap Flights from Houston (IAH) to Sao Luis (SLZ)

View $565 flight on Thu, Apr 2, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Sao Luis (SLZ-Marechal Cunha Machado Intl.)

Cheap Flights from Houston to Sao Luis (IAH-SLZ)

Prices were available within the past 7 days and start at $565 for one-way flights and $1,054 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

GOL Linhas Aereas S.A.
Thu, Oct 15 - Tue, Oct 20
IAH
Houston
SLZ
São Luís
$1,054 Roundtrip, found 2 days ago
$1,054
Roundtrip
found 2 days ago
Select GOL Linhas Aereas S.A. flight, departing Thu, Oct 15 from Houston to São Luís, returning Tue, Oct 20, priced at $1,054 found 2 days ago
GOL Linhas Aereas S.A.
Thu, Apr 2 - Wed, Apr 15
IAH
Houston
SLZ
São Luís
$1,140 Roundtrip, found 2 days ago
$1,140
Roundtrip
found 2 days ago
Select GOL Linhas Aereas S.A. flight, departing Thu, Apr 2 from Houston to São Luís, returning Wed, Apr 15, priced at $1,140 found 2 days ago
GOL Linhas Aereas S.A.
Thu, Apr 2 - Wed, Apr 15
IAH
Houston
SLZ
São Luís
$1,152 Roundtrip, found 2 days ago
$1,152
Roundtrip
found 2 days ago
Select GOL Linhas Aereas S.A. flight, departing Thu, Apr 2 from Houston to São Luís, returning Wed, Apr 15, priced at $1,152 found 2 days ago
GOL Linhas Aereas S.A.
Mon, Mar 2 - Sun, Mar 8
IAH
Houston
SLZ
São Luís
$1,189 Roundtrip, found 3 days ago
$1,189
Roundtrip
found 3 days ago
Select GOL Linhas Aereas S.A. flight, departing Mon, Mar 2 from Houston to São Luís, returning Sun, Mar 8, priced at $1,189 found 3 days ago
GOL Linhas Aereas S.A.
Mon, Mar 2 - Sun, Mar 8
IAH
Houston
SLZ
São Luís
$1,201 Roundtrip, found 3 days ago
$1,201
Roundtrip
found 3 days ago
Select GOL Linhas Aereas S.A. flight, departing Mon, Mar 2 from Houston to São Luís, returning Sun, Mar 8, priced at $1,201 found 3 days ago
GOL Linhas Aereas S.A.
Thu, Oct 15 - Tue, Oct 20
IAH
Houston
SLZ
São Luís
$1,239 Roundtrip, found 2 days ago
$1,239
Roundtrip
found 2 days ago
Select GOL Linhas Aereas S.A. flight, departing Thu, Oct 15 from Houston to São Luís, returning Tue, Oct 20, priced at $1,239 found 2 days ago
GOL Linhas Aereas S.A.
Thu, Oct 15 - Tue, Oct 20
IAH
Houston
SLZ
São Luís
$1,249 Roundtrip, found 2 days ago
$1,249
Roundtrip
found 2 days ago
Select GOL Linhas Aereas S.A. flight, departing Thu, Oct 15 from Houston to São Luís, returning Tue, Oct 20, priced at $1,249 found 2 days ago
Air Canada
Thu, Apr 2 - Wed, Apr 15
IAH
Houston
SLZ
São Luís
$1,306 Roundtrip, found 2 days ago
$1,306
Roundtrip
found 2 days ago
Select Air Canada flight, departing Thu, Apr 2 from Houston to São Luís, returning Wed, Apr 15, priced at $1,306 found 2 days ago
LATAM Airlines Group
Thu, Apr 2 - Wed, Apr 15
IAH
Houston
SLZ
São Luís
$1,495 Roundtrip, found 2 days ago
$1,495
Roundtrip
found 2 days ago
Select LATAM Airlines Group flight, departing Thu, Apr 2 from Houston to São Luís, returning Wed, Apr 15, priced at $1,495 found 2 days ago
Aeromexico
Thu, Oct 15 - Tue, Oct 20
IAH
Houston
SLZ
São Luís
$2,393 Roundtrip, found 2 days ago
$2,393
Roundtrip
found 2 days ago
Select Aeromexico flight, departing Thu, Oct 15 from Houston to São Luís, returning Tue, Oct 20, priced at $2,393 found 2 days ago

Alternative airports near São Luís

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Marechal Cunha Machado Intl. SLZ. Cheapest and Closest option available. Average driving time to city center is 12 minutes. Flights from $6,096
SLZ
Marechal Cunha Machado Intl.
CheapestClosest
Average driving time to city center12 min
Flights from $6,096
Flights from Houston (IAH) to Sao Luis (SLZ)
Origin airport
George Bush Intercontinental
Destination airport
Marechal Cunha Machado Intl.
Roundtrip price
$1,054
Distance
4049 mi

Houston to Sao Luis Flights

The cheapest times to fly from Houston to Sao Luis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Houston to Sao Luis are during the month of October. You can find some of the cheapest flights from Houston to Sao Luis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Sao Luis

Sunday is one of the best days to book for cheap flights from Houston to Sao Luis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Houston to Sao Luis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Houston to Sao Luis in 2026. You can also book with separate airlines for your outbound and return journeys, from $565 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Houston to Sao Luis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Houston to Sao Luis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ) cost?
Lock in a cheap one-way flight from $565 or cheap return flight from $1,054 from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ)?
The cheapest month to fly from IAH to SLZ is October, when demand is low. Off-peak season is usually when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ)?
To find the cheapest airline that'll fly you from IAH to SLZ, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ)?
There are no daily nonstop flights departing from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from IAH to SLZ?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ)?
Book a flight from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ) that takes off before 3 PM to reduce the likelihood of delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ) last-minute?
Booking your ticket from IAH to SLZ just before your getaway is usually more expensive. But if you're flexible with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book an IAH to SLZ flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAH to SLZ flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the stress out of travel planning. Simply secure your flights and select from our extensive range of stays, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Marechal Cunha Machado Intl. Airport (SLZ)?
It's usually possible to reschedule or cancel your IAH to SLZ flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more details on our Customer Service portal.

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*Available to One Key members.