$334+ Cheap flights from California to Northern Ireland
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
Sep 9 — Sep 161
Round-trip
1 adult, Economy
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Find cheap flights from California to Northern Ireland 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 California to Northern Ireland
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Cheapest flights from California to Northern IrelandExplore the most affordable flight options available from California to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
Explore the most affordable flight options available from California to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 10, 2026.
This British Airways deal was found by Cheapflights users on 8/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:25 pm -
1 stop17h 15m
Tue 11/177:25 pm -
1 stop27h 30m
Deal found 8/6![British Airways logo]()
$874
This British Airways deal was found by Cheapflights users on 8/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 pm -
1 stop16h 40m
Tue 11/177:25 pm -
1 stop26h 00m
Deal found 8/6![British Airways logo]()
$886
This British Airways deal was found by Cheapflights users on 8/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:30 pm -
1 stop14h 05m
Tue 9/158:25 pm -
1 stop25h 25m
Deal found 8/7![British Airways logo]()
$896
This FlightHub deal was found by Cheapflights users on 8/8. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3110:56 pm -
2 stops26h 39m
Wed 11/1812:25 pm -
1 stop14h 20m
Deal found 8/8![British Airways logo]()
$909
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:10 pm -
1 stop14h 10m
Tue 9/296:30 am -
1 stop19h 50m
Deal found 8/10![British Airways logo]()
$920
This British Airways deal was found by Cheapflights users on 8/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/284:30 pm -
1 stop17h 05m
Mon 11/25:45 pm -
1 stop27h 40m
Deal found 8/10![British Airways logo]()
$940
This American Airlines deal was found by Cheapflights users on 8/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:25 am -
2 stops16h 20m
Tue 9/294:25 pm -
1 stop27h 20m
Deal found 8/10![American Airlines logo]()
$943
This British Airways deal was found by Cheapflights users on 8/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:35 pm -
2 stops17h 55m
Tue 10/1312:40 pm -
1 stop13h 45m
Deal found 8/7![British Airways logo]()
$945
This Cheapflightsfares deal was found by Cheapflights users on 8/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:00 pm -
1 stop15h 35m
Tue 10/209:40 am -
1 stop16h 45m
Deal found 8/7![British Airways logo]()
$969
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/94:30 pm -
1 stop17h 40m
Fri 10/1611:00 am -
1 stop17h 10m
Deal found 8/8![American Airlines logo]()
$988
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:05 pm -
1 stop16h 40m
Thu 9/246:30 am -
1 stop16h 30m
Deal found 8/8![American Airlines logo]()
$989
This British Airways deal was found by Cheapflights users on 8/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:37 pm -
2 stops18h 43m
Tue 9/299:40 am -
2 stops18h 29m
Deal found 8/10![British Airways logo]()
$1,006
Best flights from California to Northern IrelandDiscover carefully curated flight deals from California to Northern Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
Discover carefully curated flight deals from California to Northern Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 10, 2026.
This British Airways deal was found by Cheapflights users on 8/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:25 pm -
1 stop17h 15m
Tue 11/177:25 pm -
1 stop27h 30m
Deal found 8/5![British Airways logo]()
$874
This American Airlines deal was found by Cheapflights users on 8/6. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:45 am -
2 stops16h 30m
Mon 11/26:35 am -
2 stops19h 14m
Deal found 8/6![American Airlines logo]()
$1,002
This Mytrip deal was found by Cheapflights users on 8/6. 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.
Sun 9/206:00 am -
2 stops25h 00m
Sun 9/272:55 pm -
2 stops33h 20m
Deal found 8/6![Multiple Airlines logo]()
$1,029
This Delta deal was found by Cheapflights users on 8/8. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/179:55 am -
2 stops23h 00m
Thu 9/249:50 am -
2 stops20h 49m
Deal found 8/8![Delta logo]()
$1,081
This KLM deal was found by Cheapflights users on 8/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:05 am -
2 stops18h 15m
Wed 9/99:50 am -
2 stops18h 34m
Deal found 8/10![KLM logo]()
$1,637
This British Airways deal was found by Cheapflights users on 8/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/155:25 pm -
1 stop17h 15m
Wed 11/183:40 pm -
1 stop31h 15m
Deal found 8/7![British Airways logo]()
$874
This British Airways deal was found by Cheapflights users on 8/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 pm -
1 stop14h 50m
Wed 11/183:40 pm -
1 stop32h 10m
Deal found 8/8![British Airways logo]()
$886
This Mytrip deal was found by Cheapflights users on 8/9. 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.
Mon 9/148:15 am -
3 stops21h 00m
Mon 9/218:55 pm -
3 stops34h 00m
Deal found 8/9![Multiple Airlines logo]()
$1,036
This British Airways deal was found by Cheapflights users on 8/8. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 pm -
1 stop16h 40m
Tue 11/177:25 pm -
1 stop26h 00m
Deal found 8/8![British Airways logo]()
$886
This Mytrip deal was found by Cheapflights users on 8/7. 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.
Thu 10/151:25 pm -
2 stops26h 00m
Tue 10/208:50 am -
2 stops34h 50m
Deal found 8/7![Multiple Airlines logo]()
$1,047
This British Airways deal was found by Cheapflights users on 8/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/81:45 pm -
2 stops17h 35m
Tue 9/158:25 pm -
1 stop25h 25m
Deal found 8/7![British Airways logo]()
$901
This Mytrip deal was found by Cheapflights users on 8/7. 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.
Sun 8/233:15 pm -
3 stops23h 55m
Thu 8/278:10 am -
2 stops32h 10m
Deal found 8/7![Multiple Airlines logo]()
$1,054
This British Airways deal was found by Cheapflights users on 8/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:35 pm -
2 stops17h 55m
Tue 10/1312:40 pm -
1 stop13h 45m
Deal found 8/7![British Airways logo]()
$945
This Mytrip deal was found by Cheapflights users on 8/8. 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.
Sun 9/138:30 am -
2 stops24h 55m
Sat 9/196:20 am -
3 stops47h 29m
Deal found 8/8![Multiple Airlines logo]()
$1,056
This Priceline deal was found by Cheapflights users on 8/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/168:35 pm -
1 stop15h 55m
Sat 2/611:35 am -
1 stop15h 10m
Deal found 8/10![British Airways logo]()
$953
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/229:10 pm -
1 stop27h 55m
Tue 9/88:20 am -
2 stops37h 00m
Deal found 8/10![Multiple Airlines logo]()
$1,076
This KLM deal was found by Cheapflights users on 8/10. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/257:05 am -
2 stops18h 15m
Wed 9/99:50 am -
2 stops18h 34m
Deal found 8/10![KLM logo]()
$1,637
This Mytrip deal was found by Cheapflights users on 8/5. 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.
Mon 11/95:30 pm -
2 stops20h 50m
Fri 11/139:05 pm -
3 stops42h 15m
Deal found 8/5![Multiple Airlines logo]()
$1,083
This FlightHub deal was found by Cheapflights users on 8/6. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:05 pm -
1 stop17h 15m
Wed 9/168:35 pm -
1 stop23h 10m
Deal found 8/6![British Airways logo]()
$993
This oojo deal was found by Cheapflights users on 8/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2012:02 pm -
2 stops18h 33m
Wed 2/39:15 am -
2 stops20h 55m
Deal found 8/10![British Airways logo]()
$999
This Mytrip deal was found by Cheapflights users on 8/6. 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.
Tue 9/88:30 am -
2 stops23h 55m
Mon 9/146:10 am -
2 stops23h 39m
Deal found 8/6![Multiple Airlines logo]()
$1,123
This British Airways deal was found by Cheapflights users on 8/9. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:15 am -
2 stops17h 00m
Mon 11/29:15 am -
2 stops19h 41m
Deal found 8/9![British Airways logo]()
$1,005
This Mytrip deal was found by Cheapflights users on 8/10. 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.
Thu 9/243:05 pm -
2 stops22h 35m
Thu 10/18:55 pm -
3 stops46h 50m
Deal found 8/10![Multiple Airlines logo]()
$1,123
This FlightHub deal was found by Cheapflights users on 8/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:35 pm -
1 stop17h 40m
Fri 9/187:35 pm -
2 stops30h 34m
Deal found 8/5![British Airways logo]()
$1,031
This Mytrip deal was found by Cheapflights users on 8/5. 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.
Sat 9/128:30 am -
2 stops21h 05m
Fri 9/189:10 pm -
3 stops31h 49m
Deal found 8/5![Multiple Airlines logo]()
$1,163
This oojo deal was found by Cheapflights users on 8/5. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:00 pm -
2 stops19h 20m
Fri 9/188:10 pm -
2 stops30h 19m
Deal found 8/5![British Airways logo]()
$1,064
This oojo deal was found by Cheapflights users on 8/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/206:30 am -
2 stops26h 05m
Wed 2/36:35 am -
2 stops23h 35m
Deal found 8/10![Multiple Airlines logo]()
$1,291
This British Airways deal was found by Cheapflights users on 8/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:11 pm -
2 stops20h 14m
Fri 12/116:45 am -
2 stops23h 25m
Deal found 8/5![British Airways logo]()
$1,108
This British Airways deal was found by Cheapflights users on 8/5. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
2 stops26h 50m
Wed 11/1811:25 am -
2 stops19h 23m
Deal found 8/5![British Airways logo]()
$1,108
This Ovago deal was found by Cheapflights users on 8/9. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/281:25 pm -
2 stops18h 40m
Tue 1/57:00 am -
3 stops19h 45m
Deal found 8/9![Multiple Airlines logo]()
$1,379
Last-minute flights from California to Northern IrelandDiscover last-minute flight deals from California to Northern Ireland. Data last updated August 10, 2026 and is based on user searches.
Discover last-minute flight deals from California to Northern Ireland. Data last updated August 10, 2026 and is based on user searches.
This FlightHub deal was found by Cheapflights users on 8/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/114:35 pm -
1 stop14h 45m
Tue 8/187:30 pm -
1 stop26h 20m
Deal found 8/9![British Airways logo]()
$1,024
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/229:10 pm -
1 stop27h 55m
Wed 9/96:15 am -
2 stops23h 50m
Deal found 8/10![Multiple Airlines logo]()
$1,009
This oojo deal was found by Cheapflights users on 8/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:05 pm -
1 stop17h 15m
Wed 9/168:35 pm -
1 stop23h 10m
Deal found 8/7![British Airways logo]()
$992
This Gotogate deal was found by Cheapflights users on 8/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/64:45 pm -
1 stop32h 35m
Sun 9/139:45 am -
1 stop34h 05m
Deal found 8/7![Multiple Airlines logo]()
$1,018
This British Airways deal was found by Cheapflights users on 8/7. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:30 pm -
1 stop14h 05m
Tue 9/158:25 pm -
1 stop25h 25m
Deal found 8/7![British Airways logo]()
$896
This FlightHub deal was found by Cheapflights users on 8/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:35 pm -
1 stop17h 40m
Fri 9/187:35 pm -
2 stops30h 34m
Deal found 8/5![British Airways logo]()
$1,031
This American Airlines deal was found by Cheapflights users on 8/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:05 pm -
1 stop16h 40m
Thu 9/246:30 am -
1 stop16h 30m
Deal found 8/8![American Airlines logo]()
$989
This Mytrip deal was found by Cheapflights users on 8/6. 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.
Sun 9/206:00 am -
2 stops25h 00m
Sun 9/272:55 pm -
2 stops33h 20m
Deal found 8/6![Multiple Airlines logo]()
$1,029
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:10 pm -
1 stop14h 10m
Tue 9/296:30 am -
1 stop19h 50m
Deal found 8/10![British Airways logo]()
$920
This American Airlines deal was found by Cheapflights users on 8/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:25 am -
2 stops16h 20m
Tue 9/294:25 pm -
1 stop27h 20m
Deal found 8/10![American Airlines logo]()
$943
This British Airways deal was found by Cheapflights users on 8/10. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:37 pm -
2 stops18h 43m
Tue 9/299:40 am -
2 stops18h 29m
Deal found 8/10![British Airways logo]()
$1,006
This Mytrip deal was found by Cheapflights users on 8/10. 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.
Thu 9/244:45 pm -
2 stops22h 05m
Thu 10/14:40 pm -
2 stops30h 00m
Deal found 8/10![Multiple Airlines logo]()
$1,033
One-way flights from California to Northern IrelandSearch for one-way flight options from California to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
Search for one-way flight options from California to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated August 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:06 pm -
3 stops34h 24m
Deal found 8/9![Multiple Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:50 pm -
3 stops28h 30m
Deal found 8/5![Multiple Airlines logo]()
$411
This Kiwi.com deal was found by Cheapflights users on 8/5. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1211:50 pm -
3 stops36h 40m
Deal found 8/5![Multiple Airlines logo]()
$462
This FlightHub deal was found by Cheapflights users on 8/5. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/121:18 pm -
2 stops22h 02m
Deal found 8/5![British Airways logo]()
$490
This Ovago deal was found by Cheapflights users on 8/5. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 am -
2 stops20h 05m
Deal found 8/5![British Airways logo]()
$593
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/125:10 pm -
1 stop13h 55m
Deal found 8/5![Aer Lingus logo]()
$629
This KLM deal was found by Cheapflights users on 8/5. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/124:45 pm -
1 stop16h 10m
Deal found 8/5![KLM logo]()
$866
Find flight deals from California to Northern Ireland
Keep the following information in mind while searching for California to Northern Ireland flight deals. Data was last updated August 10, 2026.
Round-trip from | $874 (British Airways) |
|---|---|
One-way from | $334 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from California to Northern Ireland 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 August 10, 2026.
Use the filters below to find and compare flights from California to Northern Ireland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoBelfast
SFO San Francisco - BHD Belfast City
SFOBHD
San Francisco
Sun 11/15
5:25 pm-6:40 pm
1 stop17h 15m
Belfast City
Tue 11/17
7:25 pm-2:55 pm
1 stop27h 30m
$874
San FranciscoBelfast
SFO San Francisco - BHD Belfast City
SFOBHD
San Francisco
Sun 11/15
5:25 pm-6:40 pm
1 stop17h 15m
Belfast City
Wed 11/18
3:40 pm-2:55 pm
1 stop31h 15m
$874
Los AngelesBelfast
LAX Los Angeles - BHD Belfast City
LAXBHD
Los Angeles
Sun 11/15
6:00 pm-4:50 pm
1 stop14h 50m
Belfast City
Wed 11/18
3:40 pm-3:50 pm
1 stop32h 10m
$886
Los AngelesBelfast
LAX Los Angeles - BHD Belfast City
LAXBHD
Los Angeles
Sun 11/15
6:00 pm-6:40 pm
1 stop16h 40m
Belfast City
Tue 11/17
7:25 pm-1:25 pm
1 stop26h 00m
$886
San FranciscoBelfast
SFO San Francisco - BHD Belfast City
SFOBHD
San Francisco
Tue 9/8
1:45 pm-3:20 pm
2 stops17h 35m
Belfast City
Tue 9/15
8:25 pm-1:50 pm
1 stop25h 25m
$901
Los AngelesBelfast
LAX Los Angeles - BHD Belfast City
LAXBHD
Los Angeles
Mon 10/5
1:35 pm-3:30 pm
2 stops17h 55m
Belfast City
Tue 10/13
12:40 pm-6:25 pm
1 stop13h 45m
$945
Quickest round-trip
San FranciscoBelfast
SFO San Francisco - BHD Belfast City
SFOBHD
San Francisco
Sat 1/16
8:35 pm-8:30 pm
1 stop15h 55m
Belfast City
Sat 2/6
11:35 am-6:45 pm
1 stop15h 10m
$953
Los AngelesBelfast
LAX Los Angeles - BHD Belfast City
LAXBHD
Los Angeles
Sat 9/5
6:05 pm-7:20 pm
1 stop17h 15m
Belfast City
Wed 9/16
8:35 pm-11:45 am
1 stop23h 10m
$993
San JoseBelfast
SJC San Jose - BHD Belfast City
SJCBHD
San Jose
Wed 1/20
12:02 pm-2:35 pm
2 stops18h 33m
Belfast City
Wed 2/3
9:15 am-10:10 pm
2 stops20h 55m
$999
Los AngelesBelfast
LAX Los Angeles - BHD Belfast City
LAXBHD
Los Angeles
Wed 10/28
10:45 am-10:15 am
2 stops16h 30m
Belfast City
Mon 11/2
6:35 am-5:49 pm
2 stops19h 14m
$1,002
Showing 1-10 of 35 resultsSorted by cheapest first
Best time to book a flight from California to Northern Ireland
Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from California with our price prediction graph.
SFO-BFS
ONT-BHD
LAX-BHD
LAX-BFS
SFO-BHD
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.
Cheapflights Insights
Everything you need to know about your flight from California to Northern Ireland
USCA-GBNIR
SFO-BFS
ONT-BHD
LAX-BHD
LAX-BFS
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Northern Ireland
Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated August 10, 2026.
Peruse reviews from past customers who have flown with British Airways from California to Northern Ireland to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.0
Food
6.4
Overall
6.7
Entertainment
6.5
Comfort
6.8
Crew
7.7
Reviews
1 / 20
8.0
ExcellentLakshmi,Dec 2025
SFO - LHR
Boarding
7.0
Food
6.4
Overall
6.7
Entertainment
6.5
Comfort
6.8
Crew
7.7
Reviews
1 / 20
8.0
ExcellentLakshmi,Dec 2025
SFO - LHR
Related info for your journey
Find useful and relevant information for your journey from California to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for California to Northern Ireland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Northern Ireland by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from California to Northern Ireland by cabin class
Find flights from California to Northern Ireland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
California and Northern Ireland flights
Browse other California and Northern Ireland flight options. Last updated on August 10, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Northern Ireland
Find the right flight back to California after your stay in Northern Ireland
California to Northern Ireland flights
Consider these flights traveling from California to Northern Ireland.
Top airline flying from California to Northern Ireland
Discover the top airline that operate flights from California to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$583 | Average$993 | FlexibilityNo cancel fee | On-time70% |