🇺🇸 Cheap flights from London to Ontario (United States) for €530 round-trip
· Captain Cheap
Flights from London to Ontario, United States from €530 round-trip by Iberia! Find the cheapest flights from London to Ontario and book your ticket at the best price! Tickets to United States will cost from €530 both ways.
Ontario sits in California's Inland Empire, a sprawl of warehouses, shopping outlets and wide boulevards east of Los Angeles, framed by the San Gabriel Mountains. It works best as a practical base rather than a destination in itself: quiet, car-dependent and handily placed for day trips toward the mountains or the coast. November brings mild, dry days and cool evenings, with the first dusting of snow sometimes visible on the higher peaks nearby.
IberiaThis is the price we found on . Cheap fares move fast, so the live price may differ — always check it before booking.
See the live price →See London → Ontarioprice history & all deals →
Planning the trip? United States: what to see and when to go covers where to go, when, and what to expect.
Other available dates
1 more date on this route from €551
Pick a date to check its live price.
| Departure | Return | Price | Book |
|---|---|---|---|
| 1 Nov | 30 Nov | €551 | Check → |
Prices were correct when this post was published and change constantly. Check the booking site for live availability.
Ready to go?
Book this trip
Deals this good sell out within hours — if it's right for you, book it before it's gone.
London → Ontario → London
€530 return
Where to stay
Hotels, apartments and guesthouses at the destination, most with free cancellation if plans change. Find a place to stay →
Car rental
Car hire in over 150 countries, useful when the destination airport is out of town. Compare car hire →
Airport transfer
A fixed-price car meeting you at arrivals, worth it when the deal lands at 2am and the buses have stopped. Book an airport transfer →
Staying connected
A travel eSIM avoids roaming charges and activates before you land. Get a travel eSIM →
Things to do there
Tours, day trips and skip-the-line tickets at the destination, usually cancellable up to 24h before. See tours and tickets →
Some of these are affiliate links — we may earn a commission at no extra cost to you.
You might also like
Athens → Boston
🇺🇸 Cheap flights from Athens to Boston (United States) for €384 round-trip
19–22 Jan · United States
Stockholm → Fort Lauderdale
🇺🇸 Cheap flights from Stockholm to Fort Lauderdale (United States) for €384 round-trip
22–24 Nov · United States
London → San Francisco
🇺🇸 Cheap flights from London to San Francisco (United States) for €474 round-trip
2–4 Oct · United States