$364+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BCN
Jul 9 — Jul 161
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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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 June 9, 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 June 9, 2026.
This KLM deal was found by Cheapflights users on 6/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:05 am
ONT
- BCN
1 stop20h 45m
KLM
Fri 10/91:20 pm
BCN
- ONT
1 stop18h 23m
KLM
Deal found 6/7![KLM logo]()
$873
This Delta deal was found by Cheapflights users on 6/7. 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.
Sun 10/46:00 am
ONT
- BCN
2 stops23h 50m
Delta
Fri 10/911:00 am
BCN
- ONT
1 stop20h 14m
Delta
Deal found 6/7![Delta logo]()
$877
This American Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 9/3010:25 am
ONT
- BCN
2 stops16h 35m
American Airlines
Thu 10/810:45 am
BCN
- ONT
2 stops19h 23m
American Airlines
Deal found 6/8![American Airlines logo]()
$878
This American Airlines deal was found by Cheapflights users on 6/7. 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 10/48:25 am
ONT
- BCN
1 stop16h 45m
American Airlines
Fri 10/912:30 pm
BCN
- ONT
2 stops19h 36m
American Airlines
Deal found 6/7![American Airlines logo]()
$884
This Condor deal was found by Cheapflights users on 6/7. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2710:54 am
ONT
- BCN
2 stops26h 16m
Multiple Airlines
Tue 8/118:00 am
BCN
- ONT
2 stops21h 55m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$886
This British Airways deal was found by Cheapflights users on 6/4. 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.
Tue 9/222:22 pm
ONT
- BCN
2 stops19h 18m
British Airways
Tue 10/67:40 am
BCN
- ONT
2 stops22h 28m
British Airways
Deal found 6/4![British Airways logo]()
$887
This Booking.com deal was found by Cheapflights users on 6/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1010:54 am
ONT
- BCN
2 stops26h 16m
Multiple Airlines
Thu 9/38:00 am
BCN
- ONT
2 stops21h 24m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$890
This British Airways deal was found by Cheapflights users on 6/4. 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.
Wed 9/238:25 am
ONT
- BCN
2 stops17h 35m
British Airways
Tue 10/61:30 pm
BCN
- ONT
1 stop18h 36m
British Airways
Deal found 6/4![British Airways logo]()
$891
This Iberia deal was found by Cheapflights users on 6/8. 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 Iberia 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
Iberia
Thu 10/81:30 pm
BCN
- ONT
1 stop18h 36m
Iberia
Deal found 6/8![Iberia logo]()
$893
This Trip.com deal was found by Cheapflights users on 6/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:25 am
ONT
- BCN
1 stop16h 45m
Iberia
Wed 10/71:30 pm
BCN
- ONT
1 stop18h 36m
Iberia
Deal found 6/7![Iberia logo]()
$903
This Trip.com deal was found by Cheapflights users on 6/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2010:25 am
ONT
- BCN
1 stop14h 45m
Iberia
Tue 10/61:30 pm
BCN
- ONT
1 stop16h 38m
Iberia
Deal found 6/7![Iberia logo]()
$904
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 June 9, 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 June 9, 2026.
This British Airways deal was found by Cheapflights users on 6/4. 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.
Wed 9/238:25 am
ONT
- BCN
2 stops17h 35m
British Airways
Tue 10/61:30 pm
BCN
- ONT
1 stop18h 36m
British Airways
Deal found 6/4![British Airways logo]()
$891
This Delta deal was found by Cheapflights users on 6/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3010:59 pm
ONT
- BCN
2 stops25h 36m
Delta
Sun 11/810:50 am
BCN
- ONT
2 stops21h 58m
Delta
Deal found 6/5![Delta logo]()
$978
This United Airlines deal was found by Cheapflights users on 6/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/21:49 pm
ONT
- BCN
1 stop15h 31m
United Airlines
Sat 10/103:15 pm
BCN
- ONT
1 stop16h 11m
United Airlines
Deal found 6/4![United Airlines logo]()
$1,065
This KLM deal was found by Cheapflights users on 6/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/16:20 am
ONT
- BCN
1 stop19h 50m
KLM
Sat 8/156:20 am
BCN
- ONT
2 stops25h 25m
KLM
Deal found 6/8![KLM logo]()
$1,277
This Turkish Airlines deal was found by Cheapflights users on 6/8. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1711:50 pm
ONT
- BCN
2 stops49h 55m
Multiple Airlines
Sun 8/237:40 am
BCN
- ONT
2 stops24h 44m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$1,432
This British Airways deal was found by Cheapflights users on 6/4. 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.
Fri 8/1410:29 am
ONT
- BCN
1 stop14h 41m
British Airways
Sat 8/2210:45 am
BCN
- ONT
1 stop17h 13m
British Airways
Deal found 6/4![British Airways logo]()
$1,094
This United Airlines deal was found by Cheapflights users on 6/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/271:50 pm
ONT
- BCN
3 stops33h 10m
United Airlines
Tue 8/1111:15 am
BCN
- ONT
2 stops42h 38m
United Airlines
Deal found 6/7![United Airlines logo]()
$1,252
This Delta deal was found by Cheapflights users on 6/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:05 am
ONT
- BCN
2 stops16h 55m
Delta
Wed 8/56:20 am
BCN
- ONT
2 stops20h 01m
Delta
Deal found 6/5![Delta logo]()
$1,398
This Finnair deal was found by Cheapflights users on 6/7. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/29:10 pm
ONT
- BCN
1 stop24h 35m
Multiple Airlines
Sat 10/1010:30 am
BCN
- ONT
1 stop20h 39m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,556
This British Airways deal was found by Cheapflights users on 6/8. 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.
Fri 8/2810:29 am
ONT
- BCN
1 stop14h 41m
British Airways
Sun 9/610:45 am
BCN
- ONT
1 stop17h 02m
British Airways
Deal found 6/8![British Airways logo]()
$1,493
This United Airlines deal was found by Cheapflights users on 6/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/11:50 pm
ONT
- BCN
1 stop15h 30m
United Airlines
Sat 8/153:15 pm
BCN
- ONT
1 stop16h 20m
United Airlines
Deal found 6/8![United Airlines logo]()
$1,520
Last-minute flights from Ontario to BarcelonaDiscover last-minute flight deals from Ontario to Barcelona. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Barcelona. Data last updated June 9, 2026 and is based on user searches.
This Condor deal was found by Cheapflights users on 6/7. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/28:35 am
ONT
- BCN
2 stops28h 35m
Multiple Airlines
Tue 7/148:00 am
BCN
- ONT
2 stops23h 50m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,100
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/1310:54 am
ONT
- BCN
2 stops26h 16m
Multiple Airlines
Thu 7/238:00 am
BCN
- ONT
2 stops24h 52m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$984
This Booking.com deal was found by Cheapflights users on 6/5. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1610:54 am
ONT
- BCN
2 stops26h 16m
Multiple Airlines
Mon 7/278:00 am
BCN
- ONT
2 stops24h 52m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,087
This Condor deal was found by Cheapflights users on 6/7. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/207:00 am
ONT
- BCN
2 stops30h 10m
Multiple Airlines
Tue 8/48:00 am
BCN
- ONT
2 stops21h 55m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,075
This Condor deal was found by Cheapflights users on 6/5. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2310:54 am
ONT
- BCN
2 stops26h 16m
Multiple Airlines
Sun 8/210:25 am
BCN
- ONT
2 stops22h 20m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$1,110
This Condor deal was found by Cheapflights users on 6/5. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/264:35 pm
ONT
- BCN
2 stops20h 35m
Multiple Airlines
Tue 8/118:00 am
BCN
- ONT
2 stops21h 55m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$940
This Condor deal was found by Cheapflights users on 6/7. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2710:54 am
ONT
- BCN
2 stops26h 16m
Multiple Airlines
Tue 8/118:00 am
BCN
- ONT
2 stops21h 55m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$886
This Booking.com deal was found by Cheapflights users on 6/6. 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.
Mon 7/277:00 am
ONT
- BCN
2 stops30h 10m
Multiple Airlines
Mon 8/108:00 am
BCN
- ONT
2 stops24h 52m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,006
This Gotogate deal was found by Cheapflights users on 6/7. 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.
Mon 7/271:11 pm
ONT
- BCN
2 stops22h 29m
Multiple Airlines
Mon 8/31:50 pm
BCN
- ONT
2 stops40h 55m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$1,092
This Justfly.com deal was found by Cheapflights users on 6/6. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/3010:54 am
ONT
- BCN
2 stops26h 16m
Multiple Airlines
Fri 8/148:00 am
BCN
- ONT
2 stops23h 35m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$1,063
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 June 9, 2026.
Search for one-way flight options from Ontario to Barcelona. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:00 am
ONT
- BCN
3 stops45h 30m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 6/6. 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.
Wed 8/58:58 am
ONT
- BCN
2 stops28h 32m
Multiple Airlines
Deal found 6/6![Multiple Airlines logo]()
$380
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:05 pm
ONT
- BCN
3 stops43h 55m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$402
This Trip.com deal was found by Cheapflights users on 6/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/37:05 am
ONT
- BCN
1 stop20h 45m
Virgin Atlantic
Deal found 6/8![Virgin Atlantic logo]()
$405
This KLM deal was found by Cheapflights users on 6/6. 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.
Mon 10/1212:00 pm
ONT
- BCN
1 stop15h 50m
KLM
Deal found 6/6![KLM logo]()
$408
This KLM deal was found by Cheapflights users on 6/5. 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.
Tue 9/2911:44 am
ONT
- BCN
1 stop14h 26m
KLM
Deal found 6/5![KLM logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:15 am
ONT
- BCN
3 stops30h 00m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$410
This KLM deal was found by Cheapflights users on 6/8. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1111:56 am
ONT
- BCN
1 stop14h 14m
KLM
Deal found 6/8![KLM logo]()
$412
This Iberia deal was found by Cheapflights users on 6/5. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:25 am
ONT
- BCN
1 stop16h 45m
Iberia
Deal found 6/5![Iberia logo]()
$414
This Finnair deal was found by Cheapflights users on 6/5. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:06 am
ONT
- BCN
2 stops20h 59m
Multiple Airlines
Deal found 6/5![Multiple Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 6/4. 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.
Mon 7/2710:00 pm
ONT
- BCN
1 stop29h 50m
Delta
Deal found 6/4![Delta logo]()
$425
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 June 9, 2026.
Round-trip from | $873 (KLM) |
|---|---|
One-way from | $364 (Kiwi.com) |
Popular in | June |
Cheapest in | September |
Average price | $1,384 |
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 June 9, 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
Wed 9/23
8:25 am-11:00 am
2 stops17h 35m
Barcelona-El Prat
Tue 10/6
1:30 pm-11:06 pm
1 stop18h 36m
$891
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Fri 10/30
10:59 pm-8:35 am
2 stops25h 36m
Barcelona-El Prat
Sun 11/8
10:50 am-11:48 pm
2 stops21h 58m
$978
Quickest round-trip
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Fri 10/2
1:49 pm-2:20 pm
1 stop15h 31m
Barcelona-El Prat
Sat 10/10
3:15 pm-10:26 pm
1 stop16h 11m
$1,065
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Fri 8/14
10:29 am-10:10 am
1 stop14h 41m
Barcelona-El Prat
Sat 8/22
10:45 am-6:58 pm
1 stop17h 13m
$1,094
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Mon 7/27
1:50 pm-8:00 am
3 stops33h 10m
Barcelona-El Prat
Tue 8/11
11:15 am-8:53 pm
2 stops42h 38m
$1,252
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Sat 8/1
6:20 am-11:10 am
1 stop19h 50m
Barcelona-El Prat
Sat 8/15
6:20 am-10:45 pm
2 stops25h 25m
$1,277
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Wed 7/22
7:05 am-9:00 am
2 stops16h 55m
Barcelona-El Prat
Wed 8/5
6:20 am-5:21 pm
2 stops20h 01m
$1,398
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Mon 8/17
11:50 pm-10:45 am
2 stops49h 55m
Barcelona-El Prat
Sun 8/23
7:40 am-11:24 pm
2 stops24h 44m
$1,432
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Fri 8/28
10:29 am-10:10 am
1 stop14h 41m
Barcelona-El Prat
Sun 9/6
10:45 am-6:47 pm
1 stop17h 02m
$1,493
OntarioBarcelona
ONT - BCN
ONTBCN
Ontario
Sat 8/1
1:50 pm-2:20 pm
1 stop15h 30m
Barcelona-El Prat
Sat 8/15
3:15 pm-10:35 pm
1 stop16h 20m
$1,520
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 June 9, 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.
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Food
6.6
Boarding
7.7
Crew
8.1
Overall
7.4
Entertainment
7.1
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
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 June 9, 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 June 9, 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 June 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$587 | Average$737 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$714 | Average$1,102 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$747 | Average$969 | FlexibilityNo cancel fee | On-time70% |