$358+ Cheap flights from Ontario (ONT) to Barcelona
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BCN
Oct 9 — Oct 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 September 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 September 9, 2026.
This Delta deal was found by Cheapflights users on 9/5. 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.
Tue 10/2011:56 am -
1 stop14h 14m
Wed 10/2811:15 am -
2 stops31h 51m
Deal found 9/5![Delta logo]()
$712
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:05 am -
1 stop16h 35m
Tue 12/810:50 am -
1 stop19h 09m
Deal found 9/9![Delta logo]()
$722
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1711:57 am -
2 stops17h 03m
Fri 12/410:50 am -
1 stop16h 49m
Deal found 9/9![Delta logo]()
$741
This Kissandfly.com deal was found by Cheapflights users on 9/8. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:56 am -
1 stop14h 14m
Wed 1/2010:50 am -
1 stop20h 24m
Deal found 9/8![Multiple Airlines logo]()
$744
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:05 am -
1 stop16h 35m
Sat 12/510:50 am -
1 stop18h 06m
Deal found 9/9![Delta logo]()
$772
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/287:05 am -
1 stop16h 35m
Sat 12/510:50 am -
1 stop18h 06m
Deal found 9/8![Delta logo]()
$822
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:05 am -
1 stop16h 35m
Wed 12/210:50 am -
1 stop19h 09m
Deal found 9/9![Delta logo]()
$833
This United Airlines deal was found by Cheapflights users on 9/5. 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 United Airlines is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Sun 11/87:00 am -
1 stop21h 15m
Fri 11/131:35 pm -
2 stops38h 12m
Deal found 9/5![United Airlines logo]()
$853
This CheapOair deal was found by Cheapflights users on 9/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 am -
1 stop18h 10m
Wed 10/2810:40 am -
1 stop16h 04m
Deal found 9/5![British Airways logo]()
$855
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 12/25:45 am -
2 stops17h 35m
Fri 12/111:35 pm -
2 stops38h 09m
Deal found 9/7![United Airlines logo]()
$858
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Sun 12/611:26 am -
2 stops26h 39m
Fri 12/111:35 pm -
2 stops38h 09m
Deal found 9/7![United Airlines logo]()
$861
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 September 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 September 9, 2026.
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:29 pm -
2 stops33h 51m
Tue 11/1711:00 am -
2 stops19h 40m
Deal found 9/6![United Airlines logo]()
$865
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:08 pm -
2 stops24h 52m
Wed 12/910:50 am -
1 stop19h 09m
Deal found 9/8![Delta logo]()
$927
This KLM deal was found by Cheapflights users on 9/8. 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.
Thu 1/147:00 am -
1 stop16h 40m
Wed 1/2010:50 am -
1 stop20h 24m
Deal found 9/8![KLM logo]()
$928
This British Airways deal was found by Cheapflights users on 9/5. 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 11/37:00 am -
1 stop16h 50m
Thu 11/1210:25 am -
1 stop17h 17m
Deal found 9/5![British Airways logo]()
$1,093
This Turkish Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:05 pm -
2 stops39h 10m
Thu 10/227:40 am -
2 stops25h 02m
Deal found 9/9![Multiple Airlines logo]()
$1,117
This United Airlines deal was found by Cheapflights users on 9/7. 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 1/256:00 am -
2 stops17h 20m
Fri 1/2911:00 am -
2 stops18h 20m
Deal found 9/7![United Airlines logo]()
$883
This United Airlines deal was found by Cheapflights users on 9/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/56:00 am -
2 stops18h 00m
Sat 12/1911:50 am -
2 stops20h 03m
Deal found 9/5![United Airlines logo]()
$983
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:00 am -
1 stop20h 10m
Fri 10/161:20 pm -
1 stop18h 23m
Deal found 9/8![Delta logo]()
$1,107
This Turkish Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/101:50 pm -
2 stops25h 00m
Fri 1/226:30 am -
2 stops24h 15m
Deal found 9/9![Multiple Airlines logo]()
$1,146
This Turkish Airlines deal was found by Cheapflights users on 9/7. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/212:13 pm -
2 stops24h 02m
Sun 11/16:30 am -
2 stops25h 10m
Deal found 9/7![Multiple Airlines logo]()
$1,161
This Turkish Airlines deal was found by Cheapflights users on 9/7. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:13 pm -
2 stops24h 02m
Sun 10/256:30 am -
2 stops23h 55m
Deal found 9/7![Multiple Airlines logo]()
$1,171
This Turkish Airlines deal was found by Cheapflights users on 9/6. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1011:05 pm -
2 stops50h 40m
Fri 10/237:40 am -
2 stops25h 02m
Deal found 9/6![Multiple Airlines logo]()
$1,238
Last-minute flights from Ontario to BarcelonaDiscover last-minute flight deals from Ontario to Barcelona. Data last updated September 9, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Barcelona. Data last updated September 9, 2026 and is based on user searches.
This Iberia deal was found by Cheapflights users on 9/8. 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.
Thu 9/2410:25 am -
1 stop14h 45m
Thu 10/810:45 am -
1 stop16h 59m
Deal found 9/8![Iberia logo]()
$912
This Booking.com deal was found by Cheapflights users on 9/8. 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 9/2810:25 am -
1 stop14h 45m
Wed 10/710:45 am -
1 stop16h 59m
Deal found 9/8![British Airways logo]()
$862
This Delta deal was found by Cheapflights users on 9/7. 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.
Mon 10/512:19 pm -
1 stop15h 31m
Wed 10/2111:00 am -
1 stop18h 25m
Deal found 9/7![Delta logo]()
$957
This Delta deal was found by Cheapflights users on 9/5. 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.
Tue 10/2011:56 am -
1 stop14h 14m
Wed 10/2811:15 am -
2 stops31h 51m
Deal found 9/5![Delta logo]()
$712
This Kissandfly.com deal was found by Cheapflights users on 9/8. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:56 am -
1 stop14h 14m
Wed 1/2010:50 am -
1 stop20h 24m
Deal found 9/8![Multiple Airlines logo]()
$744
This CheapOair deal was found by Cheapflights users on 9/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 am -
1 stop18h 10m
Wed 10/2810:40 am -
1 stop16h 04m
Deal found 9/5![British Airways logo]()
$855
This Trip.com deal was found by Cheapflights users on 9/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2610:25 am -
1 stop14h 25m
Thu 10/2910:50 am -
1 stop18h 21m
Deal found 9/6![Iberia logo]()
$911
This British Airways deal was found by Cheapflights users on 9/5. 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.
Thu 10/2910:25 am -
1 stop14h 25m
Thu 11/1210:25 am -
1 stop17h 17m
Deal found 9/5![British Airways logo]()
$923
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Thu 10/291:32 pm -
2 stops15h 43m
Thu 11/1210:30 am -
2 stops21h 18m
Deal found 9/8![United Airlines logo]()
$928
This Booking.com deal was found by Cheapflights users on 9/8. 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.
Thu 10/2910:25 am -
1 stop14h 25m
Sun 11/810:40 am -
1 stop17h 02m
Deal found 9/8![British Airways logo]()
$949
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 September 9, 2026.
Search for one-way flight options from Ontario to Barcelona. Find affordable one-way fares based on user searches. Data last updated September 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:44 pm -
2 stops41h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Multiple Airlines logo]()
$358
This Expedia deal was found by Cheapflights users on 9/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:00 am -
1 stop16h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![British Airways logo]()
$400
This Booking.com deal was found by Cheapflights users on 9/7. 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 11/27:00 am -
1 stop16h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![British Airways logo]()
$406
This FlightHub deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/12:17 pm -
2 stops18h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![British Airways logo]()
$407
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/297:05 am -
1 stop16h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$408
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/17:00 am -
1 stop15h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![American Airlines logo]()
$409
This Mytrip deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/36:00 am -
1 stop17h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![British Airways logo]()
$410
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:00 am -
2 stops19h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$411
This United Airlines deal was found by Cheapflights users on 9/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:00 am -
1 stop21h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![United Airlines logo]()
$412
This Delta deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/712:16 pm -
1 stop35h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$415
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Wed 11/115:00 am -
3 stops19h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$416
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/51:40 pm -
2 stops34h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$417
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 September 9, 2026.
Round-trip from | $712 (Delta) |
|---|---|
One-way from | $358 (Kiwi.com) |
Popular in | July |
Cheapest in | November |
Average price | $1,159 |
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 7,457,451 searches. Data last updated September 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 Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Wed 11/11
6:00 am-9:00 am
2 stops18h 00m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$412
Quickest round-trip
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Sun 12/6
7:05 am-8:40 am
1 stop16h 35m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$412
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Tue 11/10
7:00 am-1:15 pm
1 stop21h 15m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$412
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Mon 11/9
7:00 am-1:15 pm
1 stop21h 15m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$412
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Sun 11/8
7:00 am-1:15 pm
1 stop21h 15m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$412
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Sat 11/7
12:16 pm-8:40 am
1 stop35h 24m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$415
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Wed 12/30
5:55 am-12:10 pm
2 stops21h 15m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$432
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Thu 11/12
7:05 am-8:40 am
1 stop16h 35m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$462
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Thu 11/5
7:00 am-1:15 pm
1 stop21h 15m
Barcelona-El Prat
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$462
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Sun 11/1
1:29 pm-8:20 am
2 stops33h 51m
Barcelona-El Prat
Tue 11/17
11:00 am-9:40 pm
2 stops19h 40m
$865
Showing 1-10 of 21 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
No data available for this route at this time. Please check back soon.
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 September 9, 2026.
Peruse reviews from past customers who have flown with United Airlines and British 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.
Overall
7.4
Crew
8.1
Food
6.6
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Overall
7.4
Crew
8.1
Food
6.6
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Overall
7.4
Crew
8.1
Food
6.6
Entertainment
7.1
Boarding
7.7
Comfort
7.3
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
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Top 2 airlines flying from Ontario to Barcelona
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$820 | Average$1,181 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$874 | Average$1,119 | FlexibilityNo cancel fee | On-time69% |