$409 Cheap Flights from Houston (IAH) to Shannon (SNN)

View $409 flight on Wed, Jan 14, 2026Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Shannon Airport (SNN)

Cheap Flights from Houston to Shannon (IAH-SNN)

Prices were available within the past 7 days and start at $409 for one-way flights and $636 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 1 - Tue, Sep 8
IAH
Houston
SNN
Shannon
$636 Roundtrip, found 13 hours ago
$636
Roundtrip
found 13 hours ago
Select United flight, departing Tue, Sep 1 from Houston to Shannon, returning Tue, Sep 8, priced at $636 found 13 hours ago
United
Tue, Sep 1 - Tue, Sep 8
IAH
Houston
SNN
Shannon
$642 Roundtrip, found 13 hours ago
$642
Roundtrip
found 13 hours ago
Select United flight, departing Tue, Sep 1 from Houston to Shannon, returning Tue, Sep 8, priced at $642 found 13 hours ago
United
Tue, Sep 1 - Tue, Sep 8
IAH
Houston
SNN
Shannon
$643 Roundtrip, found 13 hours ago
$643
Roundtrip
found 13 hours ago
Select United flight, departing Tue, Sep 1 from Houston to Shannon, returning Tue, Sep 8, priced at $643 found 13 hours ago
United
Tue, Sep 1 - Tue, Sep 8
IAH
Houston
SNN
Shannon
$649 Roundtrip, found 13 hours ago
$649
Roundtrip
found 13 hours ago
Select United flight, departing Tue, Sep 1 from Houston to Shannon, returning Tue, Sep 8, priced at $649 found 13 hours ago
Lufthansa
Wed, Aug 5 - Thu, Aug 20
IAH
Houston
SNN
Shannon
$654 Roundtrip, found 15 hours ago
$654
Roundtrip
found 15 hours ago
Select Lufthansa flight, departing Wed, Aug 5 from Houston to Shannon, returning Thu, Aug 20, priced at $654 found 15 hours ago
Lufthansa
Wed, Aug 5 - Thu, Aug 20
IAH
Houston
SNN
Shannon
$660 Roundtrip, found 15 hours ago
$660
Roundtrip
found 15 hours ago
Select Lufthansa flight, departing Wed, Aug 5 from Houston to Shannon, returning Thu, Aug 20, priced at $660 found 15 hours ago
Air Canada
Wed, Aug 5 - Thu, Aug 20
IAH
Houston
SNN
Shannon
$660 Roundtrip, found 15 hours ago
$660
Roundtrip
found 15 hours ago
Select Air Canada flight, departing Wed, Aug 5 from Houston to Shannon, returning Thu, Aug 20, priced at $660 found 15 hours ago
United
Tue, Sep 1 - Tue, Sep 8
IAH
Houston
SNN
Shannon
$687 Roundtrip, found 13 hours ago
$687
Roundtrip
found 13 hours ago
Select United flight, departing Tue, Sep 1 from Houston to Shannon, returning Tue, Sep 8, priced at $687 found 13 hours ago
British Airways
Tue, Sep 1 - Tue, Sep 8
IAH
Houston
SNN
Shannon
$869 Roundtrip, found 13 hours ago
$869
Roundtrip
found 13 hours ago
Select British Airways flight, departing Tue, Sep 1 from Houston to Shannon, returning Tue, Sep 8, priced at $869 found 13 hours ago
Aer Lingus
Wed, May 6 - Sun, May 10
IAH
Houston
SNN
Shannon
$897 Roundtrip, found 1 hour ago
$897
Roundtrip
found 1 hour ago
Select Aer Lingus flight, departing Wed, May 6 from Houston to Shannon, returning Sun, May 10, priced at $897 found 1 hour ago

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Alternative airports near Shannon

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

Select flight to Shannon Airport SNN. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $1,148
SNN
Shannon Airport
CheapestClosest
Average driving time to city center7 min
Flights from $1,148
Flights from Houston (IAH) to Shannon (SNN)
Origin airport
George Bush Intercontinental
Destination airport
Shannon
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Delta, JetBlue Airways, Lufthansa, United
Roundtrip price
$635
Distance
4457 mi

Houston to Shannon Flights

The cheapest times to fly from Houston to Shannon

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 Shannon are during the month of September. You can find some of the cheapest flights from Houston to Shannon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Houston to Shannon

Sunday is one of the best days to book for cheap flights from Houston to Shannon: 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 Shannon

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 Shannon in 2025. You can also book with separate airlines for your outbound and return journeys, from $409 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 Shannon 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 Shannon 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 Shannon Airport (SNN) cost?
Lock in a cheap one-way flight from $409 or cheap return flight from $636 from George Bush Intercontinental Airport (IAH) to Shannon Airport (SNN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from George Bush Intercontinental Airport (IAH) to Shannon Airport (SNN)?
Planning your trip for September is a great way to save, as it's the cheapest month for flights between IAH and SNN. You'll often find the lowest fares during off-peak months.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Shannon Airport (SNN)?
To find the cheapest airline flying from IAH to SNN, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from George Bush Intercontinental Airport (IAH) to Shannon Airport (SNN)?
There aren't any daily direct flights available from George Bush Intercontinental Airport (IAH) to Shannon Airport (SNN). But you can book flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from IAH to SNN?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a number of factors, including the airline and season.*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 Shannon Airport (SNN)?
Choose a flight from George Bush Intercontinental Airport (IAH) to Shannon Airport (SNN) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**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 Shannon Airport (SNN) last-minute?
Booking your ticket from IAH to SNN just before your journey is generally more expensive. However, if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an IAH to SNN flight and hotel package?
You'll typically save money by securing an IAH to SNN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. Once you've selected your ideal accommodations and flights, consider adding extras including car rentals, activities and tours.
Can I cancel or change the date of my flight from George Bush Intercontinental Airport (IAH) to Shannon Airport (SNN)?
If you booked your IAH to SNN flight in the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.