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Flights to Ontario, California

Find cheap flights to Ontario, California in 2025/2026 from £342 This is the cheapest return flight found to Ontario, California from UK on FlightsFinder on May 6th 2025 at 18:44. This offer may no longer be available. Click the offer to check live prices & dates of travel.

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Our Flight Finder compares the cheapest flights to Ontario, California from the most established flight comparison sites.
Fly to Ontario, California and visit sites like Planes of Fame Air Museum, Cucamonga-Guasti Regional Park, Jurupa Mountains Discovery Center & Yanks Air Museum.

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What are the cheapest return flights to Ontario, California in 2025/2026?

These economy flights were found on FlightsFinder from UK to Ontario, California in the last few days. Prices subject to availability.

What are the cheapest one-way flights to Ontario, California in 2025/2026?

These economy flights were found on FlightsFinder from UK to Ontario, California in the last few days. Prices subject to availability.

When are flights to Ontario, California cheapest?

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The month of May

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According to our data, May is on average the cheapest time to book flights to Ontario, California.
You can get flights from £342 return.

When is the most expensive time to fly to Ontario, California?

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The month of April

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According to our data, April is on average the most expensive time to book flights to Ontario, California.
A return flight could set you back more than £676.

Why fly to Ontario, California?

Located in Southern California, Ontario is a vibrant city known for its diverse culture, rich history, and flourishing economy. With its proximity to major attractions such as the Ontario Mills shopping mall and the Toyota Arena, Ontario offers a perfect blend of urban excitement and natural beauty. The city boasts a range of outdoor recreational activities, including hiking in the nearby Mount Baldy and exploring the picturesque Cucamonga Wilderness. Whether you're a food enthusiast, outdoor adventurer, or history buff, Ontario has something to offer everyone, making it a truly dynamic destination worth exploring.

Frequently asked questions about Flights to Ontario, California

What is considered a good price to Ontario, California?

Which popular airports are close to Ontario, California?

How long does it take to fly to Ontario, California?

How do I find the cheapest possible flights to Ontario, California?

Are there direct flights to Ontario, California?

What is the weather like in Ontario, California?

How far is the main airport in Ontario, California from the city centre?

How far in advance should I book my flight to Ontario, California?

Which day is cheapest to fly to Ontario, California?

Weather in Ontario, California

Clear
Clear

35.1 °C

Fri, 9 May 2025

Average Temperature

18°C

Jan

19°C

Feb

21°C

Mar

23°C

Apr

26°C

May

30°C

Jun

33°C

Jul

34°C

Aug

32°C

Sep

27°C

Oct

23°C

Nov

19°C

Dec

Ontario, California

Flight Distance and Flying Time to Ontario, California

London, England UK - Heathrow International Airport (LHR) to Ontario, California (ONT)

Distance:
5,410 miles (8,707 kilometres)

Average flight time (direct 12 hours 31 minutes)

London, England UK - London Gatwick International Airport (LGW) to Ontario, California (ONT)

Distance:
5,434 miles (8,745 kilometres)

Average flight time (direct 12 hours 34 minutes)

Manchester, England UK - Manchester Airport (MAN) to Ontario, California (ONT)

Distance:
5,268 miles (8,478 kilometres)

Average flight time (direct 12 hours 12 minutes)

London, England UK - London North East - Stansted International Airport (STN) to Ontario, California (ONT)

Distance:
5,414 miles (8,713 kilometres)

Average flight time (direct 12 hours 31 minutes)

London, England UK - London North, Luton International Airport (LTN) to Ontario, California (ONT)

Distance:
5,395 miles (8,683 kilometres)

Average flight time (direct 12 hours 29 minutes)

Edinburgh, Scotland UK - Airport (EDI) to Ontario, California (ONT)

Distance:
5,121 miles (8,242 kilometres)

Average flight time (direct 11 hours 52 minutes)

Birmingham, England UK - Birmingham Airport (BHX) to Ontario, California (ONT)

Distance:
5,325 miles (8,569 kilometres)

Average flight time (direct 12 hours 19 minutes)

Bristol, UK - Bristol Airport (BRS) to Ontario, California (ONT)

Distance:
5,340 miles (8,594 kilometres)

Average flight time (direct 12 hours 22 minutes)

Glasgow, Scotland UK - Glasgow International Airport (GLA) to Ontario, California (ONT)

Distance:
5,092 miles (8,195 kilometres)

Average flight time (direct 11 hours 48 minutes)

Belfast, Ireland UK - Belfast International Airport (BFS) to Ontario, California (ONT)

Distance:
5,086 miles (8,186 kilometres)

Average flight time (direct 11 hours 48 minutes)

Newcastle, UK - Newcastle International Airport (NCL) to Ontario, California (ONT)

Distance:
5,212 miles (8,388 kilometres)

Average flight time (direct 12 hours 4 minutes)

London, England UK - Royal Docks - London City Airport (LCY) to Ontario, California (ONT)

Distance:
5,426 miles (8,732 kilometres)

Average flight time (direct 12 hours 33 minutes)

Liverpool, UK - John Lennon Airport (LPL) to Ontario, California (ONT)

Distance:
5,251 miles (8,450 kilometres)

Average flight time (direct 12 hours 10 minutes)

Nottingham, UK - East Midlands Airport (EMA) to Ontario, California (ONT)

Distance:
5,321 miles (8,564 kilometres)

Average flight time (direct 12 hours 19 minutes)

Leeds, UK - Leeds/Bradford Airport (LBA) to Ontario, California (ONT)

Distance:
5,265 miles (8,473 kilometres)

Average flight time (direct 12 hours 11 minutes)

Aberdeen, Scotland UK - Dyce Airport (ABZ) to Ontario, California (ONT)

Distance:
5,102 miles (8,211 kilometres)

Average flight time (direct 11 hours 50 minutes)

Belfast, Ireland UK - George Best City Apt Airport (BHD) to Ontario, California (ONT)

Distance:
5,099 miles (8,206 kilometres)

Average flight time (direct 11 hours 49 minutes)

London, England UK - London South, Southend Airport (SEN) to Ontario, California (ONT)

Distance:
5,443 miles (8,760 kilometres)

Average flight time (direct 12 hours 35 minutes)

Southampton, UK - Southampton Airport (SOU) to Ontario, California (ONT)

Distance:
5,405 miles (8,698 kilometres)

Average flight time (direct 12 hours 30 minutes)

Jersey, UK - Jersey Airport (JER) to Ontario, California (ONT)

Distance:
5,455 miles (8,778 kilometres)

Average flight time (direct 12 hours 37 minutes)

Cardiff, Wales - UK - Cardiff Airport (CWL) to Ontario, California (ONT)

Distance:
5,319 miles (8,560 kilometres)

Average flight time (direct 12 hours 19 minutes)

Doncaster, UK - Sheffield/ Robin Hood Airport (DSA) to Ontario, California (ONT)

Distance:
5,302 miles (8,533 kilometres)

Average flight time (direct 12 hours 16 minutes)

Map of Ontario, California

Travel Videos About Ontario, California

Cheapest flight routes found to Ontario, California

From London

From London (LHR), UK to Ontario, United States (ONT): £342

Depart: 16 May 2025 · Return: 23 May 2025 Price found 06 May 2025, 18:44

From Manchester

From Manchester (MAN), UK to Ontario, United States (ONT): £428

Depart: 14 Nov 2025 · Return: 21 Nov 2025 Price found 09 May 2025, 03:34

From Newcastle

From Newcastle (NCL), UK to Ontario, United States (ONT): £429

Depart: 10 Sep 2025 · Return: 20 Sep 2025 Price found 06 May 2025, 10:42

From Edinburgh

From Edinburgh (EDI), UK to Ontario, United States (ONT): £435

Depart: 16 Sep 2025 · Return: 23 Sep 2025 Price found 05 May 2025, 23:26

From Aberdeen

From Aberdeen (ABZ), UK to Ontario, United States (ONT): £437

Depart: 20 Nov 2025 · Return: 24 Nov 2025 Price found 08 May 2025, 18:24

From Glasgow

From Glasgow (GLA), UK to Ontario, United States (ONT): £459

Depart: 26 May 2025 · Return: 02 Jun 2025 Price found 08 May 2025, 19:43

From Belfast

From Belfast (BHD), UK to Ontario, United States (ONT): £468

Depart: 12 Sep 2025 · Return: 26 Sep 2025 Price found 09 May 2025, 13:07

From Leeds

From Leeds (LBA), UK to Ontario, United States (ONT): £489

Depart: 13 Nov 2025 · Return: 20 Nov 2025 Price found 09 May 2025, 03:31

From Birmingham

From Birmingham (BHX), UK to Ontario, United States (ONT): £493

Depart: 17 Sep 2025 · Return: 24 Sep 2025 Price found 07 May 2025, 19:39

From Bristol

From Bristol (BRS), UK to Ontario, United States (ONT): £500

Depart: 04 Sep 2025 · Return: 15 Sep 2025 Price found 08 May 2025, 19:57

From Cardiff

From Cardiff (CWL), UK to Ontario, United States (ONT): £520

Depart: 28 May 2025 · Return: 08 Jun 2025 Price found 08 May 2025, 01:15

From Southampton

From Southampton (SOU), UK to Ontario, United States (ONT): £611

Depart: 06 Jun 2025 · Return: 13 Jun 2025 Price found 06 May 2025, 14:13

From Nottingham

From Nottingham (EMA), UK to Ontario, United States (ONT): £639

Depart: 29 May 2025 · Return: 10 Jun 2025 Price found 07 May 2025, 23:01

From Liverpool

From Liverpool (LPL), UK to Ontario, United States (ONT): £676

Depart: 29 May 2025 · Return: 10 Jun 2025 Price found 07 May 2025, 23:02