$464+ Cheap flights from Ontario (ONT) to Barcelona
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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BCN
May 17 — May 241
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Barcelona 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
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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 Ontario to Barcelona
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Cheapest flights from Ontario to BarcelonaExplore the most affordable flight options available from Ontario to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
Explore the most affordable flight options available from Ontario to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2026.
This Turkish Airlines deal was found by Cheapflights users on 4/13. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:10 pm
ONT
- BCN
2 stops55h 20m
Multiple Airlines
Sat 10/177:40 am
BCN
- ONT
2 stops36h 29m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$934
This Condor deal was found by Cheapflights users on 4/12. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1011:05 am
ONT
- BCN
2 stops26h 05m
Multiple Airlines
Tue 5/268:00 am
BCN
- ONT
2 stops23h 15m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$944
This FlightHub deal was found by Cheapflights users on 4/14. 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.
Mon 9/219:10 pm
ONT
- BCN
2 stops41h 05m
Turkish Airlines
Wed 9/3012:10 pm
BCN
- ONT
2 stops65h 03m
Turkish Airlines
Deal found 4/14![Turkish Airlines logo]()
$946
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 4/269:10 am
ONT
- BCN
1 stop22h 15m
Multiple Airlines
Wed 5/611:25 am
BCN
- ONT
2 stops56h 26m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$959
This Turkish Airlines deal was found by Cheapflights users on 4/13. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/712:00 pm
ONT
- BCN
2 stops26h 15m
Multiple Airlines
Sun 10/187:40 am
BCN
- ONT
2 stops36h 29m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$994
This Turkish Airlines deal was found by Cheapflights users on 4/15. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:00 am
ONT
- BCN
2 stops32h 50m
Multiple Airlines
Sat 12/57:40 am
BCN
- ONT
2 stops36h 29m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,003
This FlightHub deal was found by Cheapflights users on 4/13. 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 9/811:50 pm
ONT
- BCN
2 stops32h 50m
Turkish Airlines
Tue 9/297:05 pm
BCN
- ONT
2 stops34h 08m
Turkish Airlines
Deal found 4/13![Turkish Airlines logo]()
$1,055
This Priceline deal was found by Cheapflights users on 4/13. 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.
Tue 4/2811:35 pm
ONT
- BCN
2 stops24h 10m
Avianca
Mon 5/41:50 pm
BCN
- ONT
2 stops40h 55m
Avianca
Deal found 4/13![Avianca logo]()
$1,056
This oojo deal was found by Cheapflights users on 4/13. 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 9/3010:25 am
ONT
- BCN
1 stop14h 45m
British Airways
Wed 10/211:30 pm
BCN
- ONT
1 stop16h 38m
British Airways
Deal found 4/13![British Airways logo]()
$1,060
This oojo deal was found by Cheapflights users on 4/16. 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 10/56:00 am
ONT
- BCN
1 stop19h 10m
British Airways
Tue 10/131:30 pm
BCN
- ONT
1 stop18h 36m
British Airways
Deal found 4/16![British Airways logo]()
$1,061
This United Airlines deal was found by Cheapflights users on 4/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:00 am
ONT
- BCN
1 stop22h 10m
United Airlines
Fri 11/63:05 pm
BCN
- ONT
1 stop16h 21m
United Airlines
Deal found 4/14![United Airlines logo]()
$1,065
This Expedia deal was found by Cheapflights users on 4/16. 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.
Wed 10/1410:25 am
ONT
- BCN
1 stop14h 45m
British Airways
Wed 10/2810:40 am
BCN
- ONT
1 stop16h 17m
British Airways
Deal found 4/16![British Airways logo]()
$1,066
Best flights from Ontario to BarcelonaDiscover carefully curated flight deals from Ontario to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
Discover carefully curated flight deals from Ontario to Barcelona that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2026.
This Turkish Airlines deal was found by Cheapflights users on 4/12. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:00 pm
ONT
- BCN
2 stops26h 15m
Multiple Airlines
Sat 10/177:40 am
BCN
- ONT
2 stops43h 33m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$994
This British Airways deal was found by Cheapflights users on 4/16. 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 9/1910:25 am
ONT
- BCN
1 stop14h 45m
British Airways
Sat 10/310:45 am
BCN
- ONT
1 stop17h 12m
British Airways
Deal found 4/16![British Airways logo]()
$1,239
This United Airlines deal was found by Cheapflights users on 4/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:33 pm
ONT
- BCN
1 stop15h 47m
United Airlines
Sat 10/174:10 pm
BCN
- ONT
1 stop15h 56m
United Airlines
Deal found 4/13![United Airlines logo]()
$1,320
This KLM deal was found by Cheapflights users on 4/13. 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 5/1112:08 pm
ONT
- BCN
1 stop15h 42m
KLM
Tue 5/1911:00 am
BCN
- ONT
1 stop16h 36m
KLM
Deal found 4/13![KLM logo]()
$1,368
This Turkish Airlines deal was found by Cheapflights users on 4/12. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:00 am
ONT
- BCN
2 stops32h 15m
Multiple Airlines
Sun 10/187:40 am
BCN
- ONT
2 stops36h 29m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$994
This British Airways deal was found by Cheapflights users on 4/13. 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 10/1410:25 am
ONT
- BCN
1 stop14h 45m
British Airways
Sun 10/2510:40 am
BCN
- ONT
1 stop16h 17m
British Airways
Deal found 4/13![British Airways logo]()
$1,315
This Turkish Airlines deal was found by Cheapflights users on 4/12. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/52:05 pm
ONT
- BCN
2 stops24h 10m
Multiple Airlines
Wed 8/197:40 am
BCN
- ONT
2 stops24h 44m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$1,228
This KLM deal was found by Cheapflights users on 4/14. 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 5/3011:52 am
ONT
- BCN
1 stop14h 18m
KLM
Fri 6/1211:00 am
BCN
- ONT
1 stop16h 25m
KLM
Deal found 4/14![KLM logo]()
$1,373
This Turkish Airlines deal was found by Cheapflights users on 4/16. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/311:53 pm
ONT
- BCN
2 stops28h 37m
Multiple Airlines
Fri 7/107:40 am
BCN
- ONT
2 stops24h 31m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$1,312
This Turkish Airlines deal was found by Cheapflights users on 4/15. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/810:41 pm
ONT
- BCN
2 stops39h 34m
Multiple Airlines
Wed 6/247:40 am
BCN
- ONT
2 stops24h 31m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$1,336
This Turkish Airlines deal was found by Cheapflights users on 4/17. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1111:53 pm
ONT
- BCN
2 stops25h 52m
Multiple Airlines
Fri 6/267:40 am
BCN
- ONT
2 stops38h 29m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,377
This Turkish Airlines deal was found by Cheapflights users on 4/17. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/711:50 pm
ONT
- BCN
2 stops38h 25m
Multiple Airlines
Sun 8/167:40 am
BCN
- ONT
2 stops24h 31m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$1,403
Last-minute flights from Ontario to BarcelonaDiscover last-minute flight deals from Ontario to Barcelona. Data last updated April 17, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Barcelona. Data last updated April 17, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 4/269:10 am
ONT
- BCN
1 stop22h 15m
Multiple Airlines
Wed 5/611:25 am
BCN
- ONT
2 stops56h 26m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$959
This Priceline deal was found by Cheapflights users on 4/13. 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.
Tue 4/2811:35 pm
ONT
- BCN
2 stops24h 10m
Avianca
Mon 5/41:50 pm
BCN
- ONT
2 stops40h 55m
Avianca
Deal found 4/13![Avianca logo]()
$1,056
This Priceline deal was found by Cheapflights users on 4/13. 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.
Tue 4/286:00 am
ONT
- BCN
1 stop16h 35m
Multiple Airlines
Mon 5/41:50 pm
BCN
- ONT
2 stops40h 55m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$1,100
This oojo deal was found by Cheapflights users on 4/14. 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.
Tue 4/287:30 am
ONT
- BCN
1 stop15h 05m
British Airways
Mon 5/410:45 am
BCN
- ONT
1 stop16h 52m
British Airways
Deal found 4/14![British Airways logo]()
$1,155
This United Airlines deal was found by Cheapflights users on 4/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:30 pm
ONT
- BCN
1 stop15h 50m
United Airlines
Wed 10/74:10 pm
BCN
- ONT
1 stop15h 56m
United Airlines
Deal found 4/15![United Airlines logo]()
$1,110
This Condor deal was found by Cheapflights users on 4/12. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1011:05 am
ONT
- BCN
2 stops26h 05m
Multiple Airlines
Tue 5/268:00 am
BCN
- ONT
2 stops23h 15m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$944
This United Airlines deal was found by Cheapflights users on 4/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/101:30 pm
ONT
- BCN
1 stop15h 50m
United Airlines
Tue 5/2612:15 pm
BCN
- ONT
2 stops41h 27m
United Airlines
Deal found 4/12![United Airlines logo]()
$1,073
This oojo deal was found by Cheapflights users on 4/12. 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 5/116:00 am
ONT
- BCN
1 stop16h 35m
British Airways
Fri 5/2910:45 am
BCN
- ONT
1 stop22h 14m
British Airways
Deal found 4/12![British Airways logo]()
$1,115
This oojo deal was found by Cheapflights users on 4/13. 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 5/136:00 am
ONT
- BCN
1 stop16h 35m
British Airways
Tue 5/1910:45 am
BCN
- ONT
1 stop19h 09m
British Airways
Deal found 4/13![British Airways logo]()
$1,138
This Delta deal was found by Cheapflights users on 4/13. 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.
Tue 5/196:45 am
ONT
- BCN
1 stop19h 25m
Delta
Thu 6/1111:00 am
BCN
- ONT
1 stop16h 25m
Delta
Deal found 4/13![Delta logo]()
$1,120
One-way flights from Ontario to BarcelonaSearch for one-way flight options from Ontario to Barcelona. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
Search for one-way flight options from Ontario to Barcelona. Find affordable one-way fares based on user searches. Data last updated April 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 9/307:10 am
ONT
- BCN
2 stops21h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 10/16:10 pm
ONT
- BCN
2 stops34h 10m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$472
This Trip.com deal was found by Cheapflights users on 4/12. 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.
Thu 4/239:10 am
ONT
- BCN
1 stop22h 15m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$485
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 9/44:04 pm
ONT
- BCN
3 stops48h 21m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$500
This Mytrip deal was found by Cheapflights users on 4/15. 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 7/195:16 pm
ONT
- BCN
3 stops21h 39m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$527
This Kiwi.com deal was found by Cheapflights users on 4/14. 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 7/2310:54 am
ONT
- BCN
3 stops27h 01m
Multiple Airlines
Deal found 4/14![Multiple Airlines logo]()
$534
This Mytrip deal was found by Cheapflights users on 4/12. 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 4/295:05 pm
ONT
- BCN
3 stops20h 50m
Multiple Airlines
Deal found 4/12![Multiple Airlines logo]()
$558
This Mytrip deal was found by Cheapflights users on 4/16. 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 6/2012:55 am
ONT
- BCN
3 stops30h 40m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$634
Find flight deals from Ontario to Barcelona
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Barcelona (S37). 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 April 17, 2026.
Round-trip from | $934 (Turkish Airlines) |
|---|---|
One-way from | $464 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $1,072 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to Barcelona 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 April 17, 2026.
Use the filters below to find and compare flights from Ontario to Barcelona that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Thu 10/8
12:00 pm-11:15 pm
2 stops26h 15m
Barcelona-El Prat
Sat 10/17
7:40 am-6:13 pm
2 stops43h 33m
$994
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Wed 10/7
6:00 am-11:15 pm
2 stops32h 15m
Barcelona-El Prat
Sun 10/18
7:40 am-11:09 am
2 stops36h 29m
$994
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Wed 8/5
2:05 pm-11:15 pm
2 stops24h 10m
Barcelona-El Prat
Wed 8/19
7:40 am-11:24 pm
2 stops24h 44m
$1,228
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Sat 9/19
10:25 am-10:10 am
1 stop14h 45m
Barcelona-El Prat
Sat 10/3
10:45 am-6:57 pm
1 stop17h 12m
$1,239
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Fri 7/3
11:53 pm-1:30 pm
2 stops28h 37m
Barcelona-El Prat
Fri 7/10
7:40 am-11:11 pm
2 stops24h 31m
$1,312
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Wed 10/14
10:25 am-10:10 am
1 stop14h 45m
Barcelona-El Prat
Sun 10/25
10:40 am-6:57 pm
1 stop16h 17m
$1,315
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Mon 10/5
1:33 pm-2:20 pm
1 stop15h 47m
Barcelona-El Prat
Sat 10/17
4:10 pm-11:06 pm
1 stop15h 56m
$1,320
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Mon 6/8
10:41 pm-11:15 pm
2 stops39h 34m
Barcelona-El Prat
Wed 6/24
7:40 am-11:11 pm
2 stops24h 31m
$1,336
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Mon 5/11
12:08 pm-12:50 pm
1 stop15h 42m
Barcelona-El Prat
Tue 5/19
11:00 am-6:36 pm
1 stop16h 36m
$1,368
Quickest round-trip
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Sat 5/30
11:52 am-11:10 am
1 stop14h 18m
Barcelona-El Prat
Fri 6/12
11:00 am-6:25 pm
1 stop16h 25m
$1,373
Showing 1-10 of 22 resultsSorted by cheapest first
Best time to book a flight from Ontario to Barcelona
Have a flexible travel schedule? Discover the best time to fly to Barcelona from Ontario with our price prediction graph.
ONT-S37
ONT-BCN
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 Ontario to Barcelona
ONT-S37
ONT-BCN
How much does it cost to fly round-trip from Ontario to Barcelona?
Reviews of airlines servicing Barcelona
Get insights into the airlines that provide service to Barcelona. 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 Barcelona. Reviews last updated April 17, 2026.
Peruse reviews from past customers who have flown with United Airlines,Iberia, andBritish Airways from Ontario to Barcelona to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Comfort
7.3
Overall
7.4
Boarding
7.7
Crew
8.1
Entertainment
7.1
Food
6.6
Reviews
1 / 20
4.0
OkayThomas,Mar 2025
SFO - TPE
Related info for your journey
Find useful and relevant information for your journey from Ontario to Barcelona. 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 Ontario to Barcelona
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Complete your trip
Complete your trip to Barcelona by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Barcelona by cabin class
Find flights from Ontario to Barcelona, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Barcelona flights
Browse other Ontario and Barcelona flight options. Last updated on April 17, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on April 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Ontario to Barcelona
Discover the top 3 airlines that operate flights from Ontario to Barcelona. 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 April 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$605 | Average$783 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$682 | Average$1,075 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$747 | Average$969 | FlexibilityNo cancel fee | On-time70% |