$615 Cheap Flights from Houston (IAH) to Donegal (CFN)

View $615 flight on Sat, Nov 29, 2025Opens in a new window

Popular airlines from George Bush Intercontinental Airport (IAH) to Donegal (CFN)

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Cheap Flights from Houston to Donegal (IAH-CFN)

Prices were available within the past 7 days and start at $615 for one-way flights and $790 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Nov 11 - Tue, Nov 18
IAH
Houston
CFN
Donegal
$790 Roundtrip, found 5 days ago
$790
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Nov 11 from Houston to Donegal, returning Tue, Nov 18, priced at $790 found 5 days ago
British Airways
Sun, Nov 9 - Sun, Nov 16
IAH
Houston
CFN
Donegal
$799 Roundtrip, found 5 days ago
$799
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, Nov 9 from Houston to Donegal, returning Sun, Nov 16, priced at $799 found 5 days ago
United
Sun, Nov 9 - Tue, Nov 18
IAH
Houston
CFN
Donegal
$801 Roundtrip, found 5 days ago
$801
Roundtrip
found 5 days ago
Select United flight, departing Sun, Nov 9 from Houston to Donegal, returning Tue, Nov 18, priced at $801 found 5 days ago
British Airways
Sun, Nov 9 - Sun, Nov 16
IAH
Houston
CFN
Donegal
$806 Roundtrip, found 5 days ago
$806
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, Nov 9 from Houston to Donegal, returning Sun, Nov 16, priced at $806 found 5 days ago
American Airlines
Tue, Nov 11 - Mon, Nov 17
IAH
Houston
CFN
Donegal
$814 Roundtrip, found 5 days ago
$814
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Nov 11 from Houston to Donegal, returning Mon, Nov 17, priced at $814 found 5 days ago
British Airways
Sun, Nov 9 - Sun, Nov 16
IAH
Houston
CFN
Donegal
$849 Roundtrip, found 5 days ago
$849
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, Nov 9 from Houston to Donegal, returning Sun, Nov 16, priced at $849 found 5 days ago
American Airlines
Sun, Nov 9 - Sun, Nov 16
IAH
Houston
CFN
Donegal
$853 Roundtrip, found 5 days ago
$853
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sun, Nov 9 from Houston to Donegal, returning Sun, Nov 16, priced at $853 found 5 days ago
United
Sun, Nov 9 - Sun, Nov 16
IAH
Houston
CFN
Donegal
$855 Roundtrip, found 5 days ago
$855
Roundtrip
found 5 days ago
Select United flight, departing Sun, Nov 9 from Houston to Donegal, returning Sun, Nov 16, priced at $855 found 5 days ago
British Airways
Sun, Nov 9 - Sun, Nov 16
IAH
Houston
CFN
Donegal
$856 Roundtrip, found 5 days ago
$856
Roundtrip
found 5 days ago
Select British Airways flight, departing Sun, Nov 9 from Houston to Donegal, returning Sun, Nov 16, priced at $856 found 5 days ago
Aer Lingus
Sun, Nov 9 - Sun, Nov 16
IAH
Houston
CFN
Donegal
$928 Roundtrip, found 5 days ago
$928
Roundtrip
found 5 days ago
Select Aer Lingus flight, departing Sun, Nov 9 from Houston to Donegal, returning Sun, Nov 16, priced at $928 found 5 days ago
Flights from Houston (IAH) to Donegal (CFN)
Origin airport
George Bush Intercontinental
Destination airport
Donegal
Roundtrip price
$789
Distance
4434 mi

Houston to Donegal Flights

The cheapest times to fly from Houston to Donegal

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

 

The best time to book a flight from Houston to Donegal

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

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 Donegal in 2025. You can also book with separate airlines for your outbound and return journeys, from $615 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 Donegal 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 Donegal 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 Donegal Airport (CFN) cost?
Lock in a cheap one-way flight from $615 or cheap return flight from $790 from George Bush Intercontinental Airport (IAH) to Donegal Airport (CFN) 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 Donegal Airport (CFN)?
November is the least expensive month to fly from IAH to CFN. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from George Bush Intercontinental Airport (IAH) to Donegal Airport (CFN)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from IAH to CFN. Then, sort your results by "Price (lowest to highest)" to snag a great deal.
How many flights per day from George Bush Intercontinental Airport (IAH) to Donegal Airport (CFN)?
There aren't any daily nonstop flights from George Bush Intercontinental Airport (IAH) to Donegal Airport (CFN). But you can book flights with layovers. Filter your search results on Expedia to include one or more 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 CFN?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on various factors, including the time of year and airline.*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 Donegal Airport (CFN)?
To avoid potential delays on the George Bush Intercontinental Airport (IAH) to Donegal Airport (CFN) route, aim to travel before 3 PM. Flights after this time are 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 Donegal Airport (CFN) last-minute?
Waiting until just before your departure to book a ticket from IAH to CFN often results in higher prices. While you might find some last-minute offers, there's no guarantee. Keep your travel schedule open to boost your chances of snagging a bargain.
Is it cheaper to book an IAH to CFN flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAH to CFN flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place will take the stress out of travel planning. Simply pick your flights and select from our extensive range of hotels, then customize 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 Donegal Airport (CFN)?
If you reserved your IAH to CFN flight in the last 24 hours, you may be able to modify or cancel it at no cost. 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, go to our Customer Service portal for more information.

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*Available to One Key members.