$325+ 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 1/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BCN
Sep 6 — Sep 131
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ontario to Barcelona
Cheapest
Best
Last-minute
One-way
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 August 7, 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 August 7, 2026.
This Trip.com deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:00 am -
1 stop16h 40m
Wed 12/1610:50 am -
1 stop18h 56m
Deal found 8/7![Delta logo]()
$696
This KLM deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/51:04 pm -
2 stops18h 21m
Wed 10/141:20 pm -
1 stop18h 23m
Deal found 8/5![KLM logo]()
$715
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:00 pm -
1 stop15h 50m
Tue 9/111:00 am -
1 stop17h 53m
Deal found 8/7![Delta logo]()
$727
This KLM deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:56 am -
1 stop14h 14m
Fri 9/411:30 am -
1 stop16h 00m
Deal found 8/7![KLM logo]()
$736
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:00 pm -
1 stop15h 50m
Fri 9/411:30 am -
1 stop19h 22m
Deal found 8/5![Delta logo]()
$766
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:00 pm -
1 stop15h 50m
Thu 8/2711:00 am -
1 stop16h 30m
Deal found 8/7![Delta logo]()
$778
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:05 am -
1 stop20h 45m
Wed 8/121:20 pm -
1 stop18h 25m
Deal found 8/5![Delta logo]()
$801
This KLM deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:00 am -
1 stop16h 40m
Tue 11/2410:50 am -
1 stop18h 56m
Deal found 8/6![KLM logo]()
$832
This KLM deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/57:07 am -
1 stop16h 33m
Thu 11/2610:50 am -
1 stop17h 51m
Deal found 8/6![KLM logo]()
$840
This Icelandair deal was found by Cheapflights users on 8/4. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:50 am -
2 stops21h 50m
Tue 11/1712:25 pm -
2 stops18h 15m
Deal found 8/4![Multiple Airlines logo]()
$844
This Expedia deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 am -
1 stop18h 10m
Wed 10/2810:40 am -
1 stop16h 04m
Deal found 8/7![Iberia logo]()
$847
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 August 7, 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 August 7, 2026.
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Sun 1/176:45 am -
2 stops17h 50m
Thu 1/211:35 pm -
2 stops38h 09m
Deal found 8/4![United Airlines logo]()
$856
This British Airways deal was found by Cheapflights users on 8/3. 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 10/610:25 am -
1 stop14h 45m
Thu 10/2210:45 am -
1 stop16h 59m
Deal found 8/3![British Airways logo]()
$893
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm -
2 stops21h 33m
Mon 9/146:20 am -
2 stops19h 59m
Deal found 8/7![Delta logo]()
$929
This Turkish Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2210:39 pm -
2 stops58h 01m
Wed 11/186:30 am -
2 stops25h 24m
Deal found 8/6![Multiple Airlines logo]()
$1,045
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/257:00 am -
1 stop16h 40m
Mon 11/306:00 am -
2 stops26h 58m
Deal found 8/5![Delta logo]()
$966
This United Airlines deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/295:00 am -
2 stops19h 35m
Sat 2/69:55 am -
2 stops22h 11m
Deal found 8/5![United Airlines logo]()
$979
This British Airways deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:25 am -
1 stop14h 45m
Sat 10/1010:45 am -
1 stop17h 14m
Deal found 8/7![British Airways logo]()
$1,018
This Turkish Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2710:39 pm -
2 stops27h 06m
Tue 10/137:40 am -
2 stops23h 00m
Deal found 8/7![Multiple Airlines logo]()
$1,046
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/3011:56 am -
2 stops18h 04m
Sat 11/710:50 am -
1 stop17h 40m
Deal found 8/6![Delta logo]()
$977
This Turkish Airlines deal was found by Cheapflights users on 8/4. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1911:05 pm -
2 stops39h 10m
Mon 11/26:30 am -
2 stops25h 10m
Deal found 8/4![Multiple Airlines logo]()
$1,046
This United deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:00 am -
3 stops43h 35m
Sat 11/71:35 pm -
2 stops37h 21m
Deal found 8/6![Multiple Airlines logo]()
$1,047
This Turkish Airlines deal was found by Cheapflights users on 8/3. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/610:42 pm -
2 stops27h 03m
Thu 10/227:40 am -
2 stops25h 02m
Deal found 8/3![Multiple Airlines logo]()
$1,061
Last-minute flights from Ontario to BarcelonaDiscover last-minute flight deals from Ontario to Barcelona. Data last updated August 7, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Barcelona. Data last updated August 7, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:05 am -
1 stop20h 45m
Wed 8/121:20 pm -
1 stop18h 25m
Deal found 8/5![Delta logo]()
$801
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1312:00 pm -
1 stop15h 50m
Thu 8/2711:00 am -
1 stop16h 30m
Deal found 8/7![Delta logo]()
$778
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:00 pm -
1 stop15h 50m
Tue 9/111:00 am -
1 stop17h 53m
Deal found 8/7![Delta logo]()
$727
This KLM deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:56 am -
1 stop14h 14m
Fri 9/411:30 am -
1 stop16h 00m
Deal found 8/7![KLM logo]()
$736
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2111:56 am -
2 stops20h 14m
Mon 8/2411:00 am -
1 stop19h 52m
Deal found 8/7![Delta logo]()
$890
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2512:00 pm -
1 stop15h 50m
Fri 9/411:30 am -
1 stop19h 22m
Deal found 8/5![Delta logo]()
$766
This Condor deal was found by Cheapflights users on 8/4. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:10 pm -
2 stops23h 00m
Wed 9/98:00 am -
2 stops21h 57m
Deal found 8/4![Multiple Airlines logo]()
$939
This Delta deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:17 pm -
2 stops21h 33m
Mon 9/146:20 am -
2 stops19h 59m
Deal found 8/7![Delta logo]()
$929
This KLM deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:05 am -
1 stop20h 45m
Mon 10/129:20 am -
2 stops22h 23m
Deal found 8/5![KLM logo]()
$885
This Expedia deal was found by Cheapflights users on 8/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:25 am -
1 stop14h 45m
Wed 10/710:45 am -
1 stop16h 59m
Deal found 8/3![British Airways logo]()
$873
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 August 7, 2026.
Search for one-way flight options from Ontario to Barcelona. Find affordable one-way fares based on user searches. Data last updated August 7, 2026.
This KLM deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/3112:00 pm -
1 stop14h 20m
Deal found 8/7![KLM logo]()
$325
This KLM deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:56 am -
1 stop14h 14m
Deal found 8/6![KLM logo]()
$326
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:07 am -
2 stops16h 28m
Deal found 8/5![Delta logo]()
$329
This Delta deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:03 pm -
2 stops16h 47m
Deal found 8/5![Delta logo]()
$338
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:00 pm -
1 stop32h 10m
Deal found 8/6![Delta logo]()
$340
This KLM deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:56 am -
1 stop14h 14m
Deal found 8/5![KLM logo]()
$359
This SmartFares deal was found by Cheapflights users on 8/3. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/31:22 pm -
2 stops33h 38m
Deal found 8/3![Air Canada logo]()
$393
This FlightHub deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2810:25 am -
1 stop14h 45m
Deal found 8/7![British Airways logo]()
$411
This United Airlines deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/286:06 am -
2 stops17h 14m
Deal found 8/7![United Airlines logo]()
$412
This United Airlines deal was found by Cheapflights users on 8/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:52 pm -
2 stops33h 08m
Deal found 8/3![United Airlines logo]()
$416
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/261:52 pm -
2 stops33h 28m
Deal found 8/6![United Airlines logo]()
$418
This Delta deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:00 pm -
1 stop15h 50m
Deal found 8/6![Delta logo]()
$424
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 August 7, 2026.
Round-trip from | $696 (Trip.com) |
|---|---|
One-way from | $325 (KLM) |
Popular in | December |
Cheapest in | November |
Average price | $991 |
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 August 7, 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
Sun 1/17
6:45 am-9:35 am
2 stops17h 50m
Barcelona-El Prat
Thu 1/21
1:35 pm-6:44 pm
2 stops38h 09m
$856
Quickest round-trip
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Tue 10/6
10:25 am-10:10 am
1 stop14h 45m
Barcelona-El Prat
Thu 10/22
10:45 am-6:44 pm
1 stop16h 59m
$893
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Wed 9/9
12:17 pm-6:50 pm
2 stops21h 33m
Barcelona-El Prat
Mon 9/14
6:20 am-5:19 pm
2 stops19h 59m
$929
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Wed 11/25
7:00 am-8:40 am
1 stop16h 40m
Barcelona-El Prat
Mon 11/30
6:00 am-11:58 pm
2 stops26h 58m
$966
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Fri 10/30
11:56 am-2:00 pm
2 stops18h 04m
Barcelona-El Prat
Sat 11/7
10:50 am-7:30 pm
1 stop17h 40m
$977
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Fri 1/29
5:00 am-9:35 am
2 stops19h 35m
Barcelona-El Prat
Sat 2/6
9:55 am-11:06 pm
2 stops22h 11m
$979
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Wed 9/30
10:25 am-10:10 am
1 stop14h 45m
Barcelona-El Prat
Sat 10/10
10:45 am-6:59 pm
1 stop17h 14m
$1,018
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Tue 9/22
10:39 pm-5:40 pm
2 stops58h 01m
Barcelona-El Prat
Wed 11/18
6:30 am-10:54 pm
2 stops25h 24m
$1,045
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Sun 9/27
10:39 pm-10:45 am
2 stops27h 06m
Barcelona-El Prat
Tue 10/13
7:40 am-9:40 pm
2 stops23h 00m
$1,046
OntarioBarcelona
ONT Ontario - BCN Barcelona-El Prat
ONTBCN
Ontario
Mon 10/19
11:05 pm-11:15 pm
2 stops39h 10m
Barcelona-El Prat
Mon 11/2
6:30 am-10:40 pm
2 stops25h 10m
$1,046
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
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 August 7, 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
Crew
8.1
Boarding
7.7
Food
6.7
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Crew
8.1
Boarding
7.7
Food
6.7
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Crew
8.1
Boarding
7.7
Food
6.7
Entertainment
7.1
Overall
7.4
Reviews
1 / 20
4.0
OkayDynasty,May 2026
LAX - EWR
Comfort
7.3
Crew
8.1
Boarding
7.7
Food
6.7
Entertainment
7.1
Overall
7.4
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to Barcelona
See prices for flight routes from nearby airports that may be better suited for you.
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 August 7, 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 August 7, 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 August 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$723 | Average$1,019 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$820 | Average$1,181 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$874 | Average$1,119 | FlexibilityNo cancel fee | On-time69% |