$600 Find Cheap Flights to Letterkenny

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Letterkenny departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Cheap Flights to Letterkenny

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights to Letterkenny that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals to Letterkenny

Wed, Dec 3 - Sun, Dec 7
British Airways Logo
6:35 pm - 8:00 pmORD-CFN
19h 25m2 stops
British Airways Logo
1:00 pm - 1:50 pmCFN-ORD
30h 50m2 stops
$799British Airways
Find Deal
Sat, Feb 21 - Wed, Feb 25
British Airways Logo
8:40 pm - 2:00 pmSFO-CFN
33h 20m2 stops
British Airways Logo
2:30 pm - 3:00 pmCFN-SFO
32h 30m2 stops
$1,210British Airways
Find Deal
Sat, Feb 21 - Wed, Feb 25
British Airways Logo
8:40 pm - 2:00 pmSFO-CFN
33h 20m2 stops
British Airways Logo
7:55 am - 3:00 pmCFN-SFO
39h 05m2 stops
$1,211British Airways
Find Deal

Everything you should know

Cheapest round-trip
$799
British Airways
Wed 12/3Sun 12/7
ORD - CFN • 2 stops
Cheapest one-way
$600
Multiple Airlines
Sat 4/11
ORD - CFN • 2 stops
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We hope you love your trip to Letterkenny!
Useful Info

FAQs - booking Letterkenny flights

  • How to fly to Letterkenny?

    You cannot fly directly to Letterkenny. KAYAK recommends you fly to Donegal (CFN) (24.94 miles from Letterkenny). From there you can rent a car or get a taxi.

  • What airports are near Letterkenny?

    The closest airport is Donegal (CFN) (24.94 mi). Other nearby airports are Belfast Intl (BFS) (63.68 mi) or Belfast City (BHD) (77.55 mi). KAYAK recommends you fly to Donegal.

  • How far is Donegal Airport from central Donegal?

    The city center of Donegal is 28 miles from Donegal Airport.

  • What is the name of Donegal’s airport?

    All flights to Donegal land at Donegal Airport. The airport code is CFN,and it can also be referred to as Donegal.

  • How does KAYAK find such low prices on flights to Letterkenny?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights to Letterkenny.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket to Letterkenny?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Letterkenny is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights to Letterkenny?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Letterkenny with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight to Letterkenny?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Letterkenny up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Letterkenny

  • There is no major airport in Letterkenny. It is instead served by Donegal Airport.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Letterkenny flight deals.

Reviews of the top airline flying to Letterkenny

 
Need help choosing which airline to fly with from the United States to Letterkenny? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.2
Aer LingusOverall score based on 1348 reviews
6.5Food
6.9Entertainment
7.1Comfort
7.3Boarding
8.0Crew
Airline reviews

Food was just okay. Was surprised initially when was charged for a cup of tea when they first came through cabin for beverages. I’ve had far better long distance flights ( take some tips from Swiss airlines)

6.0 GoodAnonymous, Oct 2025DBV - DUB
Read more Aer Lingus reviews

Food was just okay. Was surprised initially when was charged for a cup of tea when they first came through cabin for beverages. I’ve had far better long distance flights ( take some tips from Swiss airlines)

The boarding process was not good. From check-in, there was only one desk for check-in, which made for a very long line. I asked to print out my boarding pass for the next leg of my trip, also via Aer Lingus, and they said they couldn't. I was unable to do this on the app or online, either. Many fellow passengers I spoke to had the same issue. Because the plane was delayed taking off by 90 minutes, everyone had to quickly go to a desk for their next boarding pass which was chaos. Overall it wasn't a smooth or happy experience.

UNDERPRISER IS A CRIMINAL ORGANIZATION. I WILL NEVER LET THEM MANAGE ANOTHER TRIP. THEY ESSENTIALLY WERE TRYING TO EXTORT ME FOR "Permission" FROM THEM not TO USE MY ROME TO DUBLIN FLIGHT. I did not use this flight, and despite many communications with both Aer Lingus and Underpricers, to the end, they insisted I could not do this, while Aer Lingus kept telling me there was no problem. And in fact, I had zero problems catching that second leg of the trip home from Dublin to LAX.. As if harrassment, underpricers sent me a rude and insensitve email insisting Aer Lingus would not honor the flight home to LAX from DUB. ON THE MORNING OF THE TRAVEL!!! KAYAK SHOULD NOT USE UNDERPRICER "services" They are dishonest and sadistic.

We left 2 1/2 hours late. It wasn't the airlines fault but they did nothing to help the situation. Even water had a price tag. The next flight was better.

They specifically asked about my flight from bordeaux to Dublin, which was fine. A little lacking but for a 1 and a half hour flight - it was more than enough. I transferred at Dublin and went to Newark. And wow that flight was incredible.

I liked that I went thru customs in Dublin instead of having to do that in LA.

Aer Lingus unfortunately seems more like a budget airline than a national carrier. The plane was fine. The crew seemed a bit hurried and without that Irish charm (which may be an inappropriate stereotype and maybe not to be expected on a long international flight but other carriers seem to pull it off). My biggest complaint was that my gold status on Alaska Airlines--which gets me into lounges with BA and other partner airlines--was not accepted at lounges in Rome or Dublin, despite Aer Lingus on paper anyway partnering with Alaska. But the flight itself through Kayak was several hundred dollars cheaper than others, so overall, the right decision. Also, be aware that US customs on flights from Dublin occurs in Dublin (like Canadian airports) so if you have a connection or are just departing from Ireland, give yourself enough time (up to 30 minutes) to negotiate all of the lines. Still better than going through customs in the US after a 10 hour flight.

The flight was okay however, for whatever reason they were not able to check me in for all 3 flights that I had booked through them creating a big problem when I landed in Toronto, in addition my luggage never made it to Toronto as well. So overall experience was not good

Our first flight from Venice to Dublin was delayed due to very bad weather and when we did arrive we were ushered out of the secure area to collect our luggage then told we could not Demeter as the US Customs team closed at 4pm. Thus we were stuck in Dublin for one night with hundreds of passengers scrambling for information and little help from the local staff. Many passengers were left without accommodation and told to find something on their own. We were also told we would get contacted with rebooking details and did not, requiring us to make those arrangements ourselves, in some cases at a very high out of pocket cost. Many passengers swore they would never fly on Aer Lingus again.

Crew was friendly and helpful, plane was comfortable would fly with them again

Everything you need to know for your flight to Letterkenny

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