QX 2351 Denver to Seattle Flight Status

Horizon Air Flight QX2351 from Denver International Airport DEN to Seattle Tacoma International Airport SEA is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on May 2nd, 2026.
Check the table below for QX2351's most recent flight history:

QX 2351 Flight Status & Schedule

Date Departure Arrival Status
May 02 20:03 21:50
Unknown
Track >

Horizon Air QX 2351 Denver to Seattle Flight Information

Horizon Air Flight QX2351 connects Denver, United States to Seattle, United States, taking off from Denver International Airport DEN and landing at Seattle Tacoma International Airport SEA.

How long is the QX2351 flight from Denver to Seattle?

The average flight time from Denver to Seattle is 2 hours and 47 minutes. The flight distance is 1645 km / 1022 miles and the average flight speed is 591 km/h / 367 mph.

What is the On-Time Performance (OTP) of Horizon Air Flight QX2351 Denver to Seattle?

The Airportia On-Time Performance Rating for Horizon Air Flight QX2351 is 5/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight QX2351 arriving at?

Flight QX2351 arrives at Seattle Tacoma International Airport (SEA) Terminal 3.

When was the latest QX2351 flight?

The latest flight took off on Sunday, May 3rd, 2026 with the flight status being Unknown on 21:50.

How else can the flight QX2351 be referenced as?

This Horizon Air flight can also be referenced as QXE2351, QX 2351, QXE 2351.

How often is flight QX2351 delayed?

On average, 100% of all QX2351 flights are delayed. The average delay is 2 minutes.

Can I get compensation for my delayed or cancelled QX2351 flight or baggage issues?

If your QX2351 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.

See our QX2351 Flight Tracker above for more details.

QX2351 and Denver DEN to Seattle SEA Flights

Other flights departing from Denver DEN: F91734, F92817, WN3498

Other flights arriving at Seattle SEA: AS2432, AS122, AS513, AS2024

All flights connecting Denver DEN to Seattle SEA.

QX2351 Horizon Air Flight: Denver to Seattle Route Map

Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.