Denver (DEN) to Tulsa (TUL): 541 miles (870 km) great-circle, about 1h 35m nonstop by our estimate. Cheapest fare observed: $223 round-trip on American Airlines, with 1 stop, departing May 23, 2026.
$223 round-trip, American Airlines AA1090, departing 2026-05-23 at 07:13, returning 2026-05-26. The recorded itinerary left on a Saturday, returning on a Tuesday 3 nights later; the fare was observed 28 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.
At $223, it ranked 17th of the 30 round-trip fares we recorded from DEN (median $204). That is 41.2 cents per great-circle mile (round-trip price over one-way distance), above the DEN median of 16.1 cents across 30 round-trip routes.
Routes from DEN of similar length: Phoenix (601 mi) at $48 and Las Vegas (627 mi) at $102.
American Airlines had the cheapest fare on 4 of 30 DEN routes. It is the 28th longest of the 30 routes we track from DEN.
Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Denver, America/Chicago; flight time is our estimate.