$316+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BFS
Jun 6 — Jun 131
Round-trip
1 adult, Economy
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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 May 7, 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 May 7, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 5/2. 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.
Mon 11/25:30 pm
SFO
- BHD
1 stop17h 05m
British Airways
Fri 11/138:45 am
BHD
- SFO
1 stop14h 15m
British Airways
Deal found 5/2![British Airways logo]()
$858
This Cheapflightsfares deal was found by Cheapflights users on 5/3. 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 10/2710:00 pm
LAX
- BHD
1 stop13h 40m
British Airways
Tue 11/310:00 am
BHD
- LAX
1 stop16h 30m
British Airways
Deal found 5/3![British Airways logo]()
$870
This British Airways deal was found by Cheapflights users on 5/4. 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 11/98:40 pm
SFO
- BHD
1 stop13h 55m
British Airways
Wed 11/117:25 pm
BHD
- SFO
1 stop31h 20m
British Airways
Deal found 5/4![British Airways logo]()
$875
This British Airways deal was found by Cheapflights users on 5/6. 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.
Mon 9/144:35 pm
SFO
- BHD
1 stop14h 55m
British Airways
Wed 9/168:35 pm
BHD
- SFO
1 stop25h 15m
British Airways
Deal found 5/6![British Airways logo]()
$876
This American Airlines deal was found by Cheapflights users on 5/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/276:30 pm
LAX
- BHD
1 stop17h 10m
American Airlines
Tue 11/38:45 am
BHD
- LAX
1 stop19h 30m
American Airlines
Deal found 5/5![American Airlines logo]()
$885
This American Airlines deal was found by Cheapflights users on 5/2. 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.
Mon 11/22:06 pm
SFO
- BHD
2 stops17h 59m
American Airlines
Fri 11/136:45 am
BHD
- SFO
2 stops19h 39m
American Airlines
Deal found 5/2![American Airlines logo]()
$888
This British Airways deal was found by Cheapflights users on 5/6. 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.
Mon 11/169:00 pm
LAX
- BHD
1 stop13h 35m
British Airways
Wed 11/187:25 pm
BHD
- LAX
1 stop28h 25m
British Airways
Deal found 5/6![British Airways logo]()
$888
This British Airways deal was found by Cheapflights users on 5/3. 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 8/184:43 pm
LAX
- BHD
2 stops18h 12m
British Airways
Tue 9/16:30 am
BHD
- LAX
1 stop19h 50m
British Airways
Deal found 5/3![British Airways logo]()
$892
This oojo deal was found by Cheapflights users on 5/5. 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.
Wed 9/98:55 pm
LAX
- BHD
1 stop27h 50m
British Airways
Tue 9/229:40 am
BHD
- LAX
1 stop16h 40m
British Airways
Deal found 5/5![British Airways logo]()
$894
This American Airlines deal was found by Cheapflights users on 5/2. 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 11/311:35 am
LAX
- BHD
2 stops15h 55m
American Airlines
Wed 11/119:15 am
BHD
- LAX
2 stops19h 27m
American Airlines
Deal found 5/2![American Airlines logo]()
$900
This Expedia deal was found by Cheapflights users on 5/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:47 pm
ONT
- BHD
2 stops15h 58m
British Airways
Wed 11/1111:25 am
BHD
- ONT
2 stops18h 58m
British Airways
Deal found 5/2![British Airways logo]()
$902
This Justfly.com deal was found by Cheapflights users on 5/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/171:30 pm
LAX
- BHD
2 stops20h 00m
British Airways
Tue 9/16:30 am
BHD
- LAX
1 stop19h 50m
British Airways
Deal found 5/3![British Airways logo]()
$904
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 May 7, 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 May 7, 2026.
This British Airways deal was found by Cheapflights users on 5/6. 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.
Mon 9/144:35 pm
SFO
- BHD
1 stop14h 55m
British Airways
Wed 9/168:35 pm
BHD
- SFO
1 stop25h 15m
British Airways
Deal found 5/6![British Airways logo]()
$876
This American Airlines deal was found by Cheapflights users on 5/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:06 pm
SFO
- BHD
2 stops17h 59m
American Airlines
Fri 11/136:45 am
BHD
- SFO
2 stops19h 39m
American Airlines
Deal found 5/5![American Airlines logo]()
$889
This Mytrip deal was found by Cheapflights users on 5/3. 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.
Wed 6/36:00 am
SFO
- BFS
2 stops29h 15m
Multiple Airlines
Mon 6/89:15 am
BFS
- SFO
3 stops39h 50m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$997
This Virgin Atlantic deal was found by Cheapflights users on 5/6. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/221:45 pm
SFO
- BHD
1 stop19h 10m
Virgin Atlantic
Wed 7/299:50 am
BHD
- SFO
2 stops22h 02m
Virgin Atlantic
Deal found 5/6![Virgin Atlantic logo]()
$1,112
This KLM deal was found by Cheapflights users on 5/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:07 pm
SFO
- BHD
2 stops15h 48m
KLM
Wed 7/299:50 am
BHD
- SFO
2 stops22h 02m
KLM
Deal found 5/6![KLM logo]()
$1,117
This Delta deal was found by Cheapflights users on 5/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:00 am
SFO
- BHD
2 stops19h 20m
Delta
Wed 7/89:50 am
BHD
- SFO
2 stops20h 09m
Delta
Deal found 5/7![Delta logo]()
$1,262
This British Airways deal was found by Cheapflights users on 5/2. 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 11/23:54 pm
SFO
- BHD
2 stops16h 11m
British Airways
Fri 11/1311:30 am
BHD
- SFO
1 stop15h 15m
British Airways
Deal found 5/2![British Airways logo]()
$880
This American Airlines deal was found by Cheapflights users on 5/2. 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 11/311:28 am
LAX
- BHD
2 stops16h 02m
American Airlines
Wed 11/1112:25 pm
BHD
- LAX
1 stop15h 50m
American Airlines
Deal found 5/2![American Airlines logo]()
$890
This British Airways deal was found by Cheapflights users on 5/3. 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 8/184:43 pm
LAX
- BHD
2 stops18h 12m
British Airways
Tue 9/16:30 am
BHD
- LAX
1 stop19h 50m
British Airways
Deal found 5/3![British Airways logo]()
$892
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Sun 8/168:10 pm
LAX
- BFS
2 stops18h 40m
Multiple Airlines
Thu 9/33:00 pm
BFS
- LAX
1 stop34h 30m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,021
This American Airlines deal was found by Cheapflights users on 5/6. 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.
Sat 9/196:10 pm
LAX
- BHD
1 stop17h 10m
American Airlines
Sun 10/116:30 am
BHD
- LAX
1 stop21h 45m
American Airlines
Deal found 5/6![American Airlines logo]()
$985
This Expedia deal was found by Cheapflights users on 5/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/34:47 pm
ONT
- BHD
2 stops15h 58m
British Airways
Wed 11/1111:25 am
BHD
- ONT
2 stops18h 58m
British Airways
Deal found 5/2![British Airways logo]()
$902
This KLM deal was found by Cheapflights users on 5/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:01 pm
SJC
- BHD
2 stops15h 54m
KLM
Wed 7/299:50 am
BHD
- SJC
2 stops21h 49m
KLM
Deal found 5/6![KLM logo]()
$1,145
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Mon 8/178:10 pm
LAX
- BFS
2 stops17h 25m
Multiple Airlines
Mon 8/319:10 am
BFS
- LAX
1 stop17h 50m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,044
This British Airways deal was found by Cheapflights users on 5/5. 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.
Tue 10/2710:33 am
LAX
- BHD
2 stops16h 57m
British Airways
Tue 11/311:25 am
BHD
- LAX
2 stops18h 43m
British Airways
Deal found 5/5![British Airways logo]()
$903
This Kiwi.com deal was found by Cheapflights users on 5/3. 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 8/158:10 pm
LAX
- BFS
2 stops27h 20m
Multiple Airlines
Mon 8/319:10 am
BFS
- LAX
1 stop17h 50m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,104
This British Airways deal was found by Cheapflights users on 5/3. 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 8/198:55 pm
LAX
- BHD
1 stop15h 40m
British Airways
Thu 9/36:30 am
BHD
- LAX
1 stop16h 30m
British Airways
Deal found 5/3![British Airways logo]()
$914
This Justfly.com deal was found by Cheapflights users on 5/3. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:33 pm
ONT
- BHD
2 stops22h 12m
British Airways
Wed 9/28:35 pm
BHD
- ONT
2 stops33h 29m
British Airways
Deal found 5/3![British Airways logo]()
$922
This Mytrip deal was found by Cheapflights users on 5/5. 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.
Wed 9/95:30 pm
LAX
- BFS
2 stops19h 40m
Multiple Airlines
Tue 9/2211:30 pm
BFS
- LAX
3 stops46h 20m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,123
This Mytrip deal was found by Cheapflights users on 5/7. 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.
Fri 9/116:00 am
SFO
- BFS
3 stops31h 50m
Multiple Airlines
Fri 12/186:00 am
BFS
- SFO
3 stops40h 45m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,135
This British Airways deal was found by Cheapflights users on 5/6. 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.
Sat 9/511:20 am
LAX
- BHD
2 stops17h 05m
British Airways
Wed 9/1611:35 am
BHD
- LAX
1 stop14h 45m
British Airways
Deal found 5/6![British Airways logo]()
$942
This British Airways deal was found by Cheapflights users on 5/2. 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.
Thu 10/294:59 pm
ONT
- BHD
2 stops16h 41m
British Airways
Tue 11/311:25 am
BHD
- ONT
2 stops18h 58m
British Airways
Deal found 5/2![British Airways logo]()
$979
This Mytrip deal was found by Cheapflights users on 5/7. 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.
Sat 5/308:15 am
LAX
- BFS
3 stops26h 40m
Multiple Airlines
Wed 6/36:15 am
BFS
- LAX
1 stop19h 15m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$1,227
This British Airways deal was found by Cheapflights users on 5/6. 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.
Sat 9/194:26 pm
LAX
- BHD
2 stops17h 49m
British Airways
Sun 10/1111:00 am
BHD
- LAX
1 stop15h 25m
British Airways
Deal found 5/6![British Airways logo]()
$991
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Wed 7/17:45 pm
LAX
- BFS
1 stop35h 20m
Multiple Airlines
Tue 7/78:15 pm
BFS
- LAX
2 stops28h 15m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,228
This Kiwi.com deal was found by Cheapflights users on 5/5. 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.
Wed 7/17:45 pm
LAX
- BFS
1 stop35h 20m
Multiple Airlines
Thu 7/99:25 pm
BFS
- LAX
2 stops23h 40m
Multiple Airlines
Deal found 5/5![Multiple Airlines logo]()
$1,267
This British Airways deal was found by Cheapflights users on 5/3. 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 7/810:15 am
SFO
- BHD
2 stops17h 45m
British Airways
Tue 7/141:45 pm
BHD
- SFO
2 stops19h 14m
British Airways
Deal found 5/3![British Airways logo]()
$1,164
This Mytrip deal was found by Cheapflights users on 5/3. 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.
Wed 7/85:40 pm
SFO
- BFS
2 stops20h 40m
Multiple Airlines
Tue 7/1411:30 pm
BFS
- SFO
3 stops30h 25m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$1,286
This FlightHub deal was found by Cheapflights users on 5/3. 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.
Wed 6/310:20 am
SFO
- BHD
2 stops21h 20m
British Airways
Mon 6/87:35 pm
BHD
- SFO
2 stops30h 01m
British Airways
Deal found 5/3![British Airways logo]()
$1,173
This KLM deal was found by Cheapflights users on 5/3. 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.
Wed 7/155:10 pm
ONT
- BHD
2 stops15h 45m
KLM
Wed 7/229:50 am
BHD
- ONT
2 stops20h 00m
KLM
Deal found 5/3![KLM logo]()
$2,777
Last-minute flights from California to Northern IrelandDiscover last-minute flight deals from California to Northern Ireland. Data last updated May 7, 2026 and is based on user searches.
Discover last-minute flight deals from California to Northern Ireland. Data last updated May 7, 2026 and is based on user searches.
This SmartFares deal was found by Cheapflights users on 5/6. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/101:45 pm
SFO
- BHD
1 stop19h 10m
Virgin Atlantic
Tue 5/269:50 am
BHD
- SFO
1 stop33h 55m
Virgin Atlantic
Deal found 5/6![Virgin Atlantic logo]()
$1,008
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/108:20 pm
LAX
- BHD
1 stop14h 25m
American Airlines
Wed 5/206:30 am
BHD
- LAX
1 stop21h 50m
American Airlines
Deal found 5/7![American Airlines logo]()
$1,011
This British Airways deal was found by Cheapflights users on 5/3. 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 5/108:50 pm
LAX
- BHD
1 stop15h 45m
British Airways
Wed 5/2010:05 am
BHD
- LAX
2 stops18h 34m
British Airways
Deal found 5/3![British Airways logo]()
$1,023
This British Airways deal was found by Cheapflights users on 5/3. 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 5/107:30 pm
SFO
- BHD
1 stop15h 15m
British Airways
Tue 5/198:25 pm
BHD
- SFO
1 stop29h 05m
British Airways
Deal found 5/3![British Airways logo]()
$1,027
This KLM deal was found by Cheapflights users on 5/4. 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.
Sun 5/104:45 pm
LAX
- BHD
1 stop32h 35m
KLM
Wed 5/209:50 am
BHD
- LAX
1 stop34h 00m
KLM
Deal found 5/4![KLM logo]()
$1,033
This Delta deal was found by Cheapflights users on 5/4. 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.
Sun 5/106:45 am
LAX
- BHD
2 stops18h 35m
Delta
Wed 5/205:30 pm
BHD
- LAX
1 stop26h 20m
Delta
Deal found 5/4![Delta logo]()
$1,037
This Delta deal was found by Cheapflights users on 5/3. 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.
Sun 5/104:55 pm
SFO
- BHD
2 stops16h 00m
Delta
Wed 5/205:30 pm
BHD
- SFO
1 stop26h 15m
Delta
Deal found 5/3![Delta logo]()
$1,051
This oojo deal was found by Cheapflights users on 5/4. 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.
Sun 5/106:00 pm
LAX
- BHD
1 stop15h 40m
British Airways
Sat 5/167:05 pm
BHD
- LAX
1 stop24h 25m
British Airways
Deal found 5/4![British Airways logo]()
$1,058
This Delta deal was found by Cheapflights users on 5/3. 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.
Sun 5/109:43 am
SFO
- BHD
2 stops23h 12m
Delta
Tue 5/199:50 am
BHD
- SFO
2 stops22h 15m
Delta
Deal found 5/3![Delta logo]()
$1,061
This British Airways deal was found by Cheapflights users on 5/3. 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 5/1211:00 am
SJC
- BHD
2 stops22h 35m
British Airways
Wed 5/2010:05 am
BHD
- SJC
2 stops19h 51m
British Airways
Deal found 5/3![British Airways logo]()
$1,042
This KLM deal was found by Cheapflights users on 5/3. 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.
Wed 5/131:45 pm
SFO
- BHD
1 stop35h 35m
KLM
Tue 5/195:30 pm
BHD
- SFO
1 stop26h 15m
KLM
Deal found 5/3![KLM logo]()
$1,047
This Mytrip deal was found by Cheapflights users on 5/3. 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.
Wed 6/36:00 am
SFO
- BFS
2 stops29h 15m
Multiple Airlines
Mon 6/89:15 am
BFS
- SFO
3 stops39h 50m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$997
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 May 7, 2026.
Search for one-way flight options from California to Northern Ireland. Find affordable one-way fares based on user searches. Data last updated May 7, 2026.
This oojo deal was found by Cheapflights users on 5/7. 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.
Mon 9/214:36 pm
SFO
- BHD
2 stops18h 09m
British Airways
Deal found 5/7![British Airways logo]()
$316
This Cheapflightsfares deal was found by Cheapflights users on 5/7. 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.
Sun 9/134:35 pm
SFO
- BHD
1 stop14h 00m
British Airways
Deal found 5/7![British Airways logo]()
$317
This Booking.com deal was found by Cheapflights users on 5/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:30 pm
LAX
- BHD
2 stops17h 05m
British Airways
Deal found 5/6![British Airways logo]()
$323
This American Airlines deal was found by Cheapflights users on 5/6. 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.
Sun 9/66:10 pm
LAX
- BHD
1 stop16h 35m
American Airlines
Deal found 5/6![American Airlines logo]()
$324
This American Airlines deal was found by Cheapflights users on 5/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/284:35 pm
LAX
- BHD
1 stop14h 55m
American Airlines
Deal found 5/7![American Airlines logo]()
$326
This Expedia deal was found by Cheapflights users on 5/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2811:40 am
LAX
- BHD
2 stops17h 15m
British Airways
Deal found 5/7![British Airways logo]()
$327
This KLM deal was found by Cheapflights users on 5/6. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/65:05 pm
ONT
- BHD
2 stops15h 50m
KLM
Deal found 5/6![KLM logo]()
$344
This Kiwi.com deal was found by Cheapflights users on 5/6. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/68:10 pm
LAX
- BFS
2 stops27h 55m
Multiple Airlines
Deal found 5/6![Multiple Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/288:10 pm
LAX
- BFS
2 stops39h 40m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:35 pm
SFO
- BFS
2 stops37h 40m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/135:40 pm
SFO
- BFS
2 stops19h 50m
Multiple Airlines
Deal found 5/7![Multiple Airlines logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 5/3. 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.
Fri 9/116:00 am
SFO
- BFS
3 stops42h 05m
Multiple Airlines
Deal found 5/3![Multiple Airlines logo]()
$421
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 May 7, 2026.
Round-trip from | $870 (Cheapflightsfares) |
|---|---|
One-way from | $316 (oojo) |
Popular in | June |
Cheapest in | October |
Average price | $1,124 |
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 May 7, 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 - BHD
SFOBHD
San Francisco
Mon 9/14
4:35 pm-3:30 pm
1 stop14h 55m
Belfast City
Wed 9/16
8:35 pm-1:50 pm
1 stop25h 15m
$876
Quickest round-trip
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Mon 11/2
3:54 pm-4:05 pm
2 stops16h 11m
Belfast City
Fri 11/13
11:30 am-6:45 pm
1 stop15h 15m
$880
San FranciscoBelfast
SFO - BHD
SFOBHD
San Francisco
Mon 11/2
2:06 pm-4:05 pm
2 stops17h 59m
Belfast City
Fri 11/13
6:45 am-6:24 pm
2 stops19h 39m
$889
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Tue 11/3
11:28 am-11:30 am
2 stops16h 02m
Belfast City
Wed 11/11
12:25 pm-8:15 pm
1 stop15h 50m
$890
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Tue 8/18
4:43 pm-6:55 pm
2 stops18h 12m
Belfast City
Tue 9/1
6:30 am-6:20 pm
1 stop19h 50m
$892
OntarioBelfast
ONT - BHD
ONTBHD
Ontario
Tue 11/3
4:47 pm-4:45 pm
2 stops15h 58m
Belfast City
Wed 11/11
11:25 am-10:23 pm
2 stops18h 58m
$902
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Tue 10/27
10:33 am-10:30 am
2 stops16h 57m
Belfast City
Tue 11/3
11:25 am-10:08 pm
2 stops18h 43m
$903
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Wed 8/19
8:55 pm-8:35 pm
1 stop15h 40m
Belfast City
Thu 9/3
6:30 am-3:00 pm
1 stop16h 30m
$914
OntarioBelfast
ONT - BHD
ONTBHD
Ontario
Mon 8/17
12:33 pm-6:45 pm
2 stops22h 12m
Belfast City
Wed 9/2
8:35 pm-10:04 pm
2 stops33h 29m
$922
Los AngelesBelfast
LAX - BHD
LAXBHD
Los Angeles
Sat 9/5
11:20 am-12:25 pm
2 stops17h 05m
Belfast City
Wed 9/16
11:35 am-6:20 pm
1 stop14h 45m
$942
Showing 1-10 of 60 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-BHD
SFO-BFS
LAX-BHD
LAX-BFS
ONT-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-BHD
SFO-BFS
LAX-BHD
LAX-BFS
What is the cheapest month to book a flight from California to Northern Ireland?
Currently, March is the cheapest month in which you can book a flight from California to Northern Ireland (average of $566). Flying from California to Northern Ireland in June is currently the most expensive (average of $1,213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
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 May 7, 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.
Crew
7.7
Food
6.4
Overall
6.7
Comfort
6.8
Boarding
6.9
Entertainment
6.4
Reviews
1 / 20
10.0
ExcellentViorica,Mar 2026
PHX - LHR
Crew
7.7
Food
6.4
Overall
6.7
Comfort
6.8
Boarding
6.9
Entertainment
6.4
Reviews
1 / 20
10.0
ExcellentViorica,Mar 2026
PHX - 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 May 7, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 May 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$583 | Average$968 | FlexibilityNo cancel fee | On-time70% |