Washington DC (DCA) to Toronto (YTO): 359 miles (578 km) great-circle, about 1h 15m nonstop by our estimate. Cheapest fare observed: $372 round-trip on United Airlines, with 1 stop, departing July 3, 2026.
$372 round-trip, United Airlines UA8489, departing 2026-07-03 at 12:40, returning 2026-07-05. The recorded itinerary left on a Friday, returning on a Sunday 2 nights later; the fare was observed 69 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $372, it ranked 11th of the 30 round-trip fares we recorded from DCA (median $998). That is 103.5 cents per great-circle mile (round-trip price over one-way distance), above the DCA median of 26.4 cents across 30 round-trip routes.
Routes from DCA of similar length: Atlanta (547 mi) at $158 and Chicago (611 mi) at $269.
United Airlines had the cheapest fare on 5 of 30 DCA routes. It is the 30th longest of the 30 routes we track from DCA.
Of 16 departure airports with a fare to Toronto, Washington DC (DCA) ranked 12th at $372. Lowest: $214 from Edmonton (YEG); highest: $1091 from Bangalore (BLR); 6 nonstop. Cheapest-fare airlines (routes): United Airlines (5), Porter Airlines (3), WestJet (3), airline P3 (1), Flair Airlines (1) and Frontier (1), plus 2 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Toronto; flight time is our estimate.