Your next trip, last seen at €364
Below averageFrontier Airlines · 3 stops · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €364, departing 5 Dec 2026 (Last checked: 13 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 69Check live prices for this route
- Airlines seen
- Aer Lingus, Alaska Airlines, easyJet, Frontier Airlines, Icelandair, Norse, Ryanair UK, WestJet (8)
- Typical journey time
- 34h 25m
About this route
Explore the fares we observed from Ontario to Belfast. Prices move often, so pick your dates to see the latest options.
- Route distance
- 8,207 km
- Typical journey time
- 34h 25m
- Airlines seen
- Aer Lingus, Alaska Airlines, easyJet, Frontier Airlines, Icelandair, Norse, Ryanair UK, WestJet (8)
- Seen on fares with a connection
- Frontier Airlines, Alaska Airlines, Aer Lingus, Icelandair, easyJet, Ryanair UK
- Alternative airports
- BHD
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
Airport to city: straight-line distance
- Ontario International Airport (ONT) → Ontario, city gazetteer reference point (34.0500, -117.6400): ≈ 4 km.
- George Best Belfast City Airport (BHD) → Belfast, city gazetteer reference point (54.5973, -5.9301): ≈ 4 km.
- Belfast International Airport (BFS) → Belfast, city gazetteer reference point (54.5973, -5.9301): ≈ 20 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Lowest fare by departure month
Cheapest month from Ontario to Belfast: December 2026, from €364 (checked 13 Oct 2026).
| Month | Lowest fare | Priced days |
|---|---|---|
| October 2026 | €438 | 10 |
| November 2026 | €370 | 25 |
| December 2026 | €364 | 22 |
| January 2027 | €421 | 12 |
Lowest fare by day of the week
Cheapest day of the week from Ontario to Belfast: Tuesday, from €364 (checked 13 Oct 2026).
| Day | Lowest fare | Priced days |
|---|---|---|
| Monday | €370 | 11 |
| Tuesday | €364 | 12 |
| Wednesday | €387 | 11 |
| Thursday | €387 | 9 |
| Friday | €430 | 8 |
| Saturday | €364 | 8 |
| Sunday | €390 | 10 |
One-way fares checked in the last 14 days. Each figure is the lowest priced departure day we saw, not a guaranteed fare.
Lowest fare by days before departure
Lowest fare from Ontario to Belfast by days until departure (31 to 60 days): €364 (checked 13 Oct 2026).
| Days before departure | Lowest fare | Priced days |
|---|---|---|
| 0 to 7 days | €438 | 8 |
| 8 to 30 days | €370 | 19 |
| 31 to 60 days | €364 | 24 |
| 61 days or more | €387 | 18 |
One-way fares checked in the last 14 days. Each figure is the lowest stored fare for that distance to departure, not a price forecast.
Fares for different departure dates, checked now; not a guide to when to book.
Lowest one-way fare we saw per airline
Cheapest airline from Ontario to Belfast: Aer Lingus, from €364 (checked 13 Oct 2026).
| Airline | Lowest fare | Priced days |
|---|---|---|
| Aer Lingus | €364Dec 8, 2026 | 5 |
| Frontier Airlines | €364Dec 5, 2026 | 47 |
| Ryanair UK | €387Dec 3, 2026 | 3 |
| easyJet | €395Dec 7, 2026 | 4 |
| Icelandair | €415Dec 31, 2026 | 4 |
| Alaska Airlines | €438Oct 20, 2026 | 6 |
One-way fares checked in the last 14 days. An airline listed here had a fare on at least 3 departure days. Each figure is the lowest we saw, not a guaranteed fare. Connecting itineraries are included; the date is the departure day of that fare.
Frequently asked
How much is a flight from Ontario to Belfast?
The lowest fare we have observed is €364, found on 13 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Ontario to Belfast?
Cheapest month from Ontario to Belfast: December 2026, from €364 (checked 13 Oct 2026).
Are there direct flights from Ontario to Belfast?
Our data holds no non-stop flight from Ontario to Belfast. The fares on this page include at least one stop.
Which airlines fly from Ontario to Belfast?
These are the carriers we have seen on the route: Aer Lingus, Alaska Airlines, easyJet, Frontier Airlines, Icelandair, Norse, Ryanair UK, WestJet (8).
How long does the flight from Ontario to Belfast take?
The average journey time across the 74 fares we observed is 36h 02m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Ontario to Belfast fares were non-stop?
None of the 74 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
Which day of the week is cheapest from Ontario to Belfast?
Cheapest day of the week from Ontario to Belfast: Tuesday, from €364 (checked 13 Oct 2026).
Which airline has the lowest fare from Ontario to Belfast?
Cheapest airline from Ontario to Belfast: Aer Lingus, from €364 (checked 13 Oct 2026).
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 13 Oct 2026