--- title: "Knoxville to Washington flights: who flies TYS-IAD" description: "United Airlines and Allegiant Air fly nonstop from TYS to IAD, about 29 flights a week, scheduled at 1h 26m to 1h 46m. See the full timetable and who flies it on 2LNR." canonical: "https://2lnr.com/routes/tys-iad" url: "https://2lnr.com/routes/tys-iad.md" date_modified: "2026-10-18T05:10:47Z" --- # Knoxville to Washington (TYS-IAD): nonstop flights and who flies them United Airlines and Allegiant Air fly nonstop between Knoxville (TYS) and Washington (IAD), roughly 29 times a week. The timetable below shows the nonstop scheduled at 1h 26m to 1h 46m for the 420 miles. Schedule last confirmed October 18, 2026. Departure times come from 2LNR's schedule data; confirm with the airline before you book. Updated October 23, 2026. See TYS to IAD on the interactive map [Get started free](https://2lnr.com/login) 29 Flights a week, 4-week average 1h 26m to 1h 46m Scheduled flight time 420 mi Nonstop distance Free To get started ## Knoxville to Washington flight schedule Scheduled nonstop departures for TYS to IAD starting October 22, 2026, last checked against our schedule feed on October 18, 2026. Airlines retime and cancel flights, so confirm with the airline before you book. Scheduled nonstop departures from Knoxville (TYS) to Washington (IAD) | Date | Flight | Airline | Departs TYS | Arrives IAD | Duration | Aircraft | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | Thu, Oct 22 | UA 4311 | United Airlines | 05:45 | 07:25 | 1h 40m | ERJ | | Thu, Oct 22 | G4 1427 | Allegiant Air | 07:45 | 09:11 | 1h 26m | [Airbus A320](https://2lnr.com/seatmaps/g4/a320.md) | | Thu, Oct 22 | UA 4325 | United Airlines | 09:45 | 11:31 | 1h 46m | ERJ | | Thu, Oct 22 | UA 4848 | United Airlines | 13:35 | 15:21 | 1h 46m | ERJ | | Thu, Oct 22 | UA 6255 | United Airlines | 19:25 | 21:09 | 1h 44m | [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md) | | Fri, Oct 23 | UA 4311 | United Airlines | 05:45 | 07:25 | 1h 40m | ERJ | | Fri, Oct 23 | UA 4325 | United Airlines | 09:45 | 11:31 | 1h 46m | ERJ | | Fri, Oct 23 | UA 6255 | United Airlines | 19:25 | 21:09 | 1h 44m | Embraer E175 | | Sat, Oct 24 | UA 4311 | United Airlines | 05:45 | 07:25 | 1h 40m | ERJ | | Sat, Oct 24 | UA 4325 | United Airlines | 09:45 | 11:31 | 1h 46m | ERJ | | Sat, Oct 24 | UA 4848 | United Airlines | 13:35 | 15:21 | 1h 46m | ERJ | | Sat, Oct 24 | UA 6255 | United Airlines | 19:25 | 21:09 | 1h 44m | Embraer E175 | | Sun, Oct 25 | UA 4311 | United Airlines | 05:45 | 07:25 | 1h 40m | ERJ | | Sun, Oct 25 | G4 1426 | Allegiant Air | 06:00 | 07:26 | 1h 26m | Airbus A320 | | Sun, Oct 25 | UA 4325 | United Airlines | 09:45 | 11:31 | 1h 46m | ERJ | | Sun, Oct 25 | UA 4848 | United Airlines | 13:35 | 15:21 | 1h 46m | ERJ | | Sun, Oct 25 | UA 6255 | United Airlines | 19:35 | 21:15 | 1h 40m | Embraer E175 | | Mon, Oct 26 | UA 4311 | United Airlines | 05:45 | 07:25 | 1h 40m | ERJ | | Mon, Oct 26 | UA 4325 | United Airlines | 09:45 | 11:28 | 1h 43m | ERJ | | Mon, Oct 26 | UA 4848 | United Airlines | 13:35 | 15:21 | 1h 46m | ERJ | | Mon, Oct 26 | UA 6255 | United Airlines | 19:35 | 21:15 | 1h 40m | Embraer E175 | | Tue, Oct 27 | UA 4311 | United Airlines | 05:45 | 07:25 | 1h 40m | ERJ | | Tue, Oct 27 | UA 4325 | United Airlines | 09:45 | 11:28 | 1h 43m | ERJ | | Tue, Oct 27 | UA 4848 | United Airlines | 13:55 | 15:38 | 1h 43m | ERJ | | Tue, Oct 27 | UA 6255 | United Airlines | 19:35 | 21:15 | 1h 40m | Embraer E175 | | Wed, Oct 28 | UA 4311 | United Airlines | 05:45 | 07:25 | 1h 40m | ERJ | | Wed, Oct 28 | UA 4325 | United Airlines | 09:45 | 11:31 | 1h 46m | ERJ | | Wed, Oct 28 | UA 4848 | United Airlines | 13:55 | 15:38 | 1h 43m | ERJ | | Wed, Oct 28 | UA 6255 | United Airlines | 19:35 | 21:15 | 1h 40m | Embraer E175 | Showing all 29 scheduled TYS to IAD departures across 7 days with service, starting October 22, 2026. Later dates are on the interactive map. Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline hasn't filed that value in the schedule data we hold. Aircraft are the equipment the airline filed, named where the code pins down one type and shown as the family or the bare code where it doesn't. Swaps can happen up to departure. See every TYS to IAD date on the interactive map ## Aircraft on the Knoxville to Washington nonstop In the schedule table on this page, United Airlines flies the Embraer ERJ and the [Embraer E175](https://2lnr.com/seatmaps/ua/e175.md), and Allegiant Air flies the [Airbus A320](https://2lnr.com/seatmaps/g4/a320.md). Each linked aircraft page shows where that airline schedules it. Airlines can swap aircraft up to departure. ## The full TYS to IAD nonstop schedule This page carries the full TYS to IAD nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below. ### See the schedule Who operates each TYS to IAD nonstop and how often it runs, from 2LNR's schedule data. ### Plan on the map See TYS to IAD on the interactive route map, with schedules, connections, and route statistics. ## Airlines flying Knoxville to Washington nonstop Carriers operating TYS to IAD nonstop in the current schedule. - [United Airlines (UA) route map](https://2lnr.com/routes/airlines/ua.md)\ [The aircraft UA flies](https://2lnr.com/seatmaps/ua.md) - [Allegiant Air (G4) route map](https://2lnr.com/routes/airlines/g4.md)\ [The aircraft G4 flies](https://2lnr.com/seatmaps/g4.md) See TYS to IAD on the interactive map → ## Frequently asked questions about TYS to IAD **How long is the flight from Knoxville (TYS) to Washington (IAD)?** Scheduled flight times from Knoxville (TYS) to Washington (IAD) run from 1h 26m to 1h 46m across the departures in the schedule table on this page. The nonstop covers about 420 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book. **Which airlines fly nonstop from TYS to IAD?** United Airlines and Allegiant Air fly TYS to IAD nonstop. 2LNR doesn't show award or upgrade space for any of them on TYS to IAD, so this page carries the schedule rather than a space claim. **How many flights a week are there from TYS to IAD?** About 29 nonstop flights a week run between Knoxville (TYS) and Washington (IAD) in the current schedule, operated by United Airlines and Allegiant Air. Frequency shifts by season, and the schedule table on this page shows what is scheduled next. **What time do flights from TYS to IAD depart?** Scheduled TYS to IAD nonstops in the next 7 days with service leave between 05:45 and 19:35, local time at Knoxville. The schedule table on this page lists every departure by date, with its arrival time and aircraft. **Which flights operate TYS to IAD nonstop?** In the schedule table on this page, TYS to IAD nonstops fly as UA 4311, UA 4325, UA 4848, and UA 6255 on United Airlines, and G4 1426 and G4 1427 on Allegiant Air. The table lists each departure by date with its times and aircraft. **Does 2LNR show upgrade or award space on TYS to IAD?** Not on this route: 2LNR doesn't show award or upgrade space for any airline flying TYS to IAD. The page carries the full TYS to IAD nonstop schedule and who flies each departure, and the reverse direction is linked below. Flying the other way? See [IAD to TYS nonstop flights](https://2lnr.com/routes/iad-tys.md). Award seats rather than schedules? See [award availability by airline](https://2lnr.com/awards.md). Looking beyond this route? See [every route from Knoxville (TYS)](https://2lnr.com/routes/tys.md), or [every route from Washington (IAD)](https://2lnr.com/routes/iad.md). Nonstops to Washington (IAD) from other airports within 150 miles of Knoxville (TYS): - [Asheville (AVL) to Washington (IAD)](https://2lnr.com/routes/avl-iad.md), 86 miles from TYS - [Greenville (GSP) to Washington (IAD)](https://2lnr.com/routes/gsp-iad.md), 119 miles from TYS Nonstops from Knoxville (TYS) to other airports within 150 miles of Washington (IAD): - [Knoxville (TYS) to Washington (DCA)](https://2lnr.com/routes/tys-dca.md), 23 miles from IAD - [Knoxville (TYS) to Philadelphia (PHL)](https://2lnr.com/routes/tys-phl.md), 134 miles from IAD Distances are great-circle between the airports, not driving distance. - [How to plan an upgrade by route](https://2lnr.com/guides/upgrade-strategy.md) ## See the full TYS to IAD nonstop schedule Every scheduled departure on this route, with who flies it. 2LNR shows upgrade and award space by date on the carriers it tracks, the next 14 days free on every product and the full horizon on Pro. [Get started free](https://2lnr.com/login)