Boston (BOS) to Las Vegas (LAS): 2,375 miles (3,822 km) great-circle, about 5h 15m nonstop by our estimate. Cheapest fare observed: $280 round-trip on American Airlines, with 1 stop, departing May 8, 2026.
$280 round-trip, American Airlines AA1850, departing 2026-05-08 at 16:24, returning 2026-05-10. The recorded itinerary left on a Friday, returning on a Sunday 2 nights later; the fare was observed 13 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $280, it ranked 10th of the 30 round-trip fares we recorded from BOS (median $623). That is 11.8 cents per great-circle mile (round-trip price over one-way distance), below the BOS median of 19.1 cents across 30 round-trip routes.
Routes from BOS of similar length: Phoenix (2,295 mi) at $272 and Los Angeles (2,605 mi) at $281.
American Airlines had the cheapest fare on 5 of 30 BOS routes. It is the 17th longest of the 30 routes we track from BOS.
Of 32 departure airports with a fare to Las Vegas, Boston (BOS) ranked 27th at $280. Lowest: $51 from San Francisco (SFO); highest: $465 from Los Cabos (SJD); 16 nonstop. Cheapest-fare airlines (routes): Frontier (24), Alaska Airlines (2), Air Canada (1), American Airlines (1), JetBlue (1) and Southwest (1), plus 2 more.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/New_York, America/Los_Angeles; flight time is our estimate.