Cheap flights from Ontario, CA to Belfast, United Kingdom

Flights starting at £228. Choose between Frontier Airlines, easyJet, or Spirit Airlines to find the best price.

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Tips to know when travelling to Belfast

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Travelers usually depart from Ontario International, or Montclair (Ontario) when they travel from Ontario to Belfast. Book your trip to arrive at Belfast International, George Best Belfast City, or Belfast - Great Victoria Street railway station. The most popular airlines for this route are Frontier Airlines, easyJet, Spirit Airlines, Virgin Atlantic Airways, and British Airways. Ontario and Belfast have 321 direct flights per week. When you arrive at Belfast, consider visiting Giant's Causeway, Bru Na Boinne Neolithic Site (County Meath, Ireland), and Trinity College, Dublin.

Check-in for a flight from Ontario to Belfast

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Frontier AirlinesFFTF9NoOpens 24 days before flight
Closes 1 hours before flight
easyJetEZYU2NoOpens 720 days before flight
Closes 2 hours before flight
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight
Virgin Atlantic AirwaysVIRVSYes0
0
British AirwaysBAWBANo0
0

Weather in Belfast

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January6°C2°C
February7°C3°C
March8°C3°C
April11°C4°C
May13°C7°C
June16°C10°C
July17°C11°C
August17°C11°C
September15°C10°C
October12°C8°C
November9°C5°C
December7°C3°C
Hottest Month
17°C
July
Coldest month
2°C
January
Sunny days
254
days per year
Snow days
2
days per year

14 day forecast

Friday
22 Mar
91%
8°C3°C
29 Mar
84%
9°C5°C
Saturday
23 Mar
89%
8°C3°C
30 Mar
11°C3°C
Sunday
24 Mar
89%
10°C2°C
31 Mar
86%
10°C5°C
Monday
25 Mar
89%
10°C5°C
1 Apr
86%
12°C4°C
Tuesday
26 Mar
83%
7°C4°C
2 Apr
89%
9°C4°C
Wednesday
27 Mar
82%
7°C5°C
3 Apr
86%
9°C1°C
Thursday
28 Mar
84%
8°C5°C
4 Apr
88%
8°C1°C

Frequently asked questions

What are the most popular routes to and from Ontario?
What are the most popular routes to and from Belfast?
What airports are near Ontario?
What airports are near Belfast?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Ontario and Belfast?
What is Virtual Interlining and how do I use it?
Which airlines fly between Ontario and Belfast?
When's the best time to travel between Ontario and Belfast?
What flights operate between Ontario and Belfast?
How many airports are there near Ontario?
How many airports are there near Belfast?
What time do nonstop (direct) flights between Ontario and Belfast depart?
What time do nonstop (direct) flights between Ontario and Belfast arrive?
What time do flights between Ontario and Belfast depart?
What time do flights between Ontario and Belfast arrive?

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