Overview
Watertown sits in the North Country of upstate New York, within easy reach of the Thousand Islands and the shores of Lake Ontario. It is the main town of Jefferson County, next to the Fort Drum army base, and a practical base for exploring the St Lawrence River region. For UK travellers this is a connecting journey rather than a direct hop, but the payoff is island cruises, historic waterfront villages and genuinely quiet countryside. A search for cheap flights to Watertown from the UK almost always means a one-stop itinerary through a US hub.
Best time to fly to Watertown
Aim for late June to early September, when the Thousand Islands are in full swing and the days are comfortably warm. September adds early autumn colour with fewer crowds. Winters are long and famously snowy, with heavy lake-effect snow off Lake Ontario, so the colder months suit skiers and snowmobilers more than sightseers. The When to book chart above shows how fares shift across the year.
Airlines and routes
There are no direct flights from the UK to Watertown. The simplest option is British Airways or American Airlines from London Heathrow to Philadelphia (around 8 hours), then a short American Eagle connection on to Watertown International, roughly 1 hour 10 minutes in the air. With the layover, allow 13 to 16 hours in total. Alternatives include flying into New York or Syracuse and driving north, or routing via Toronto with Air Canada and hiring a car for the drive across the border.
Things to do in Watertown
A small city with outsized scenery on its doorstep:
- Thompson Park: Olmsted-designed hilltop park with sweeping valley views and the compact New York State Zoo.
- Thousand Islands: Boat cruises from Clayton and Alexandria Bay, including the fairy-tale Boldt Castle.
- Sackets Harbor: Lakeside village with a well-preserved War of 1812 battlefield and a waterfront path.
- Antique Boat Museum: In nearby Clayton, a fine collection of vintage wooden river boats.
- Public Square: Watertown's historic downtown, good for coffee stops and local history.
At Watertown International Airport (ART)
The airport sits about 10 miles (16 km) north-west of the city, near Dexter. There is no scheduled public transport, so hiring a car at the terminal is the sensible choice and opens up the wider region. Taxis and rideshare operate but are limited; the drive into central Watertown takes about 20 minutes.
Top tips for finding cheap flights to Watertown
- Book ahead: for the transatlantic leg, roughly two to five months out tends to work best — use the price charts on this page to time it.
- Travel midweek: Tuesday and Wednesday departures are usually cheaper, and avoiding US school holidays and the July to August peak helps.
- Stay flexible: compare Philadelphia connections against Syracuse or Toronto fly-drive options on nearby dates.
- Compare carriers: check British Airways against American Airlines, and see whether booking the regional leg separately works out cheaper.
Travel essentials
UK passport holders travel under the US Visa Waiver Programme and must hold an approved ESTA before departure; it lasts two years and allows stays of up to 90 days. No special vaccinations are required. The currency is the US dollar, so check the current pound-to-dollar rate and take a card that is good for spending abroad. If you plan to cross from Canada by road, keep your passport to hand.
