HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Donegal

$980+ Cheap flights from San Francisco (SFO) to Donegal (CFN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CFN
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to Donegal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from San Francisco to Donegal

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Donegal (CFN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 11, 2025.

Round-trip from

$980
(Mytrip)
From San Francisco to Donegal
Search Deals

Find flight deals from San Francisco to Donegal

Cheapest flights from San Francisco to Donegal
Explore the most affordable flight options available from San Francisco to Donegal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/277:30 amSFO - CFN
3 stops28h 30mMultiple Airlines
mié. 10/17:55 amCFN - SFO
3 stops35h 59mMultiple Airlines
Deal found 9/11$980
This Trip.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/275:40 pmSFO - CFN
1 stop18h 20mAer Lingus
mié. 10/17:55 amCFN - SFO
1 stop16h 00mAer Lingus
Deal found 9/11$1,073

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Donegal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 11, 2025.
Use the filters below to find and compare flights from San Francisco to Donegal that are best for you.

Fly from

San Francisco

Fly to

Donegal

Route

Depart

Return

Price

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

sáb. 9/27

7:30 am-8:00 pm

3 stops28h 30m

Donegal

mié. 10/1

7:55 am-11:54 am

3 stops35h 59m

$980

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

sáb. 9/27

5:40 pm-8:00 pm

1 stop18h 20m

Donegal

mié. 10/1

7:55 am-3:55 pm

1 stop16h 00m

$1,073

San FranciscoDonegal

SFO - CFN

SFOCFN

San Francisco

sáb. 2/21

5:30 pm-8:00 pm

2 stops18h 30m

Donegal

mié. 2/25

7:55 am-6:45 pm

2 stops42h 50m

$1,224

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Best time to book a flight from San Francisco to Donegal

Have a flexible travel schedule? Discover the best time to fly to Donegal from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Donegal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Francisco to Donegal?

    Departing from San Francisco to Donegal will take you 18h 20m. Airlines will cover a distance of 4944 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from San Francisco to Donegal that include hotel bookings?

    Yes. In addition to deals on San Francisco to Donegal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Donegal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Donegal.

  • Can I find deals for business class flights from San Francisco to Donegal?

    Yes. Cheapflights offers flight deals from San Francisco to Donegal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Francisco to Donegal

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to Dublin flights
Los Angeles to Dublin flights
San Jose to Dublin flights
Ontario to Dublin flights
Oakland to Dublin flights
Santa Ana to Dublin flights
Burbank to Dublin flights
San Diego to Dublin flights
Las Vegas to Dublin flights
Los Angeles to Shannon flights
Sacramento to Dublin flights
San Francisco to Cork flights
San Francisco to Shannon flights
Los Angeles to Cork flights
Reno to Dublin flights
Ontario to Shannon flights
Long Beach to Dublin flights
Santa Ana to Shannon flights
San Jose to Shannon flights
Santa Barbara to Dublin flights
Santa Rosa to Dublin flights
Sacramento to Shannon flights
San Diego to Shannon flights
Fresno to Dublin flights
Las Vegas to Shannon flights
Ontario to Cork flights
Monterey to Dublin flights
San Jose to Cork flights
Medford to Dublin flights
San Luis Obispo to Dublin flights
Palm Springs to Dublin flights
Redding to Dublin flights
Reno to Shannon flights
San Jose to Knock flights
Fresno to Shannon flights
San Francisco to Knock flights
Oakland to Cork flights
Las Vegas to Cork flights
Burbank to Shannon flights
Long Beach to Shannon flights
Santa Rosa to Shannon flights
Los Angeles to Milltown (Kerry) flights
Arcata to Dublin flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.