Washington to Dayton (IAD-DAY): nonstop flights and who flies them

United Airlines flies nonstop between Washington (IAD) and Dayton (DAY), roughly 21 times a week. In the timetable below it flies as UA 4241, UA 4274, and UA 4327, scheduled at 1h 35m to 1h 48m for the 367 miles.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

Updated .

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21
Flights a week, 4-week average
1h 35m to 1h 48m
Scheduled flight time
367 mi
Nonstop distance
Free
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Washington to Dayton flight schedule

Scheduled nonstop departures for IAD to DAY 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.

Schedule data dated .

Scheduled nonstop departures from Washington (IAD) to Dayton (DAY)
Date Flight Airline Departs IAD Arrives DAY Duration Aircraft
UA 4327United Airlines08:1109:471h 36mERJ
UA 4241United Airlines12:4514:201h 35mERJ
UA 4274United Airlines17:2018:581h 38mERJ
UA 4327United Airlines08:1109:471h 36mERJ
UA 4241United Airlines12:4514:201h 35mERJ
UA 4274United Airlines17:2018:581h 38mERJ
UA 4327United Airlines08:1109:471h 36mERJ
UA 4274United Airlines17:2018:581h 38mERJ
UA 4327United Airlines08:1109:471h 36mERJ
UA 4241United Airlines12:4514:201h 35mERJ
UA 4274United Airlines17:2519:131h 48mERJ
UA 4327United Airlines08:1109:471h 36mERJ
UA 4241United Airlines12:4514:201h 35mERJ
UA 4274United Airlines17:2519:131h 48mERJ
UA 4327United Airlines08:1109:471h 36mERJ
UA 4241United Airlines12:3514:151h 40mERJ
UA 4274United Airlines17:2018:581h 38mERJ
UA 4327United Airlines08:1109:471h 36mERJ
UA 4241United Airlines12:3514:151h 40mERJ
UA 4274United Airlines17:2018:581h 38mERJ

Showing all 20 scheduled IAD to DAY 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 IAD to DAY date on the interactive map

Aircraft on the Washington to Dayton nonstop

United Airlines flies the Embraer ERJ on every departure in the schedule table on this page.

The full IAD to DAY nonstop schedule

This page carries the full IAD to DAY nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See the schedule

Who operates each IAD to DAY nonstop and how often it runs, from 2LNR's schedule data.

Plan on the map

See IAD to DAY on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Washington to Dayton nonstop

Carriers operating IAD to DAY nonstop in the current schedule.

See IAD to DAY on the interactive map →

Frequently asked questions about IAD to DAY

How long is the flight from Washington (IAD) to Dayton (DAY)?
Scheduled flight times from Washington (IAD) to Dayton (DAY) run from 1h 35m to 1h 48m across the departures in the schedule table on this page. The nonstop covers about 367 miles, and airlines adjust scheduled times by season, so confirm with the airline before you book.
Which airlines fly nonstop from IAD to DAY?
United Airlines is currently the only airline flying IAD to DAY nonstop. 2LNR doesn't show award or upgrade space for it on IAD to DAY, so this page carries the schedule rather than a space claim.
How many flights a week are there from IAD to DAY?
About 21 nonstop flights a week run between Washington (IAD) and Dayton (DAY) in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAD to DAY depart?
Scheduled IAD to DAY nonstops in the next 7 days with service leave between 08:11 and 17:25, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Which flights operate IAD to DAY nonstop?
In the schedule table on this page, IAD to DAY nonstops fly as UA 4241, UA 4274, and UA 4327 on United Airlines. The table lists each departure by date with its times and aircraft.
Does 2LNR show upgrade or award space on IAD to DAY?
Not on this route: 2LNR doesn't show award or upgrade space for United Airlines on IAD to DAY. The page carries the full IAD to DAY nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAD to DAY 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.

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