Cheap flights from Ontario to San Diego from £178

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1 stop
Wed, Jul 23
Ontario ONTSan Diego SAN

£178
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1 stop
Wed, Jul 23
Ontario ONTSan Diego SAN

£178
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1 stop
Wed, Jul 23
Ontario ONTSan Diego SAN

£178
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1 stop
Wed, Jul 23
Ontario ONTSan Diego SAN

£178
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1 stop
Sat, Jul 26
Ontario ONTSan Diego SAN

£182
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1 stop
Mon, Jul 21
Ontario ONTSan Diego SAN

£183
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Prices updated:

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1 stop
Fri, Jul 25 – Wed, Jul 30
Ontario ONTSan Diego SAN

£380
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1 stop
Fri, Jul 25 – Wed, Jul 30
Ontario ONTSan Diego SAN

£387
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1 stop
Fri, Jul 25 – Wed, Jul 30
Ontario ONTSan Diego SAN

£387
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1 stop
Thu, Jul 24 – Tue, Jul 29
Ontario ONTSan Diego SAN

£388
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1 stop
Fri, Jul 25 – Tue, Jul 29
Ontario ONTSan Diego SAN

£393
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1 stop
Thu, Jul 24 – Tue, Jul 29
Ontario ONTSan Diego SAN

£394
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Prices updated:

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How much do flights to San Diego cost?

Key info about flying to San Diego

Depart from
Ontario International
Arrive to
San Diego International
Average flights per week
111
Flight distance
Worth visiting
Griffith Observatory

Check-in for a flight from Ontario to San Diego

NameCarrier codeIATA CodePassport needed during booking
United AirlinesUALUANo
Hawaiian AirlinesHALHANo
Alaska AirlinesASAASNo

Weather in San Diego

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January18°C10°C
February17°C10°C
March18°C11°C
April19°C12°C
May20°C14°C
June22°C16°C
July24°C18°C
August25°C19°C
September25°C19°C
October23°C16°C
November21°C13°C
December17°C11°C
Hottest Month
25°C
August
Coldest month
10°C
February
Sunny days
346
days per year

14 day forecast

Saturday
5 Jul
24°C17°C
12 Jul
22°C18°C
Sunday
6 Jul
23°C16°C
13 Jul
24°C18°C
Monday
7 Jul
24°C16°C
14 Jul
23°C19°C
Tuesday
8 Jul
25°C19°C
15 Jul
23°C19°C
Wednesday
9 Jul
26°C20°C
16 Jul
23°C19°C
Thursday
10 Jul
24°C20°C
17 Jul
81%
23°C19°C
Friday
11 Jul
23°C19°C
18 Jul
25°C20°C
Book your trip to arrive at San Diego International, or McClellan–Palomar. The most popular airlines for this route are United Airlines, Hawaiian Airlines, and Alaska Airlines. Ontario and San Diego have 111 direct flights per week.

Frequently asked questions

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When’s the best time to travel between Ontario and San Diego?
What flights operate between Ontario and San Diego?
How many airports are there near Ontario?
How many airports are there near San Diego?
What time do nonstop (direct) flights between Ontario and San Diego depart?
What time do nonstop (direct) flights between Ontario and San Diego arrive?
What time do flights between Ontario and San Diego depart?
What time do flights between Ontario and San Diego arrive?

Explore alternative trips

Flights from Ontario

Flights to San Diego

Popular routes

The nearest countries with flights to San Diego

Here is a list of countries people are flying from

Other destination countries from Ontario

Here is a list of countries people are flying to

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