United Flight 2309 Deals & Information (2026/2027)

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Frequently asked questions

What route does flight number UA2309 take?
Flight number UA2309 flies straight from DIA airport to San Diego Intl. Airport (SAN). During this trip, you'll be in the air for about 2 hours and 19 minutes. It's wise to book ahead to lock in your preferred seat.
How often is UA2309 on time?
For passengers traveling on United Airlines flight number UA2309 from Denver, CO Airport (DEN-Denver Intl.) to San Diego Airport, 92% of these trips depart according to schedule. If you are delayed, you can expect to wait roughly 5 minutes on average. Thanks to this carrier's quality service, this flight has a 4.5-star rating.
What kind of plane is on flight number UA2309?
You'll likely find yourself hopping on board a Boeing 737-800 if you're booked on flight number UA2309. Generally, this flight takes off from Denver, CO Airport (DEN-Denver Intl.) and comes in to land at SAN.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA2309 flight with Travelocity, please visit our Customer Service Portal.