United Flight 340 Deals & Information (2025/2026)

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United Flight 340 Route Deals From $80

The cheapest prices found with in the last 7 days for return flights were $157 and $80 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Oct 25 - Sat, Nov 1
ATL
Hartsfield-Jackson Atlanta Intl.
DEN
Denver Intl.
$157 Roundtrip, found 4 hours ago
$157
Roundtrip
found 4 hours ago
Select United flight, departing Sat, Oct 25 from Hartsfield-Jackson Atlanta Intl. to Denver Intl., returning Sat, Nov 1, priced at $157 found 4 hours ago
Thu, Oct 30 - Mon, Nov 3
ATL
Hartsfield-Jackson Atlanta Intl.
DEN
Denver Intl.
$180 Roundtrip, found 1 hour ago
$180
Roundtrip
found 1 hour ago
Select United flight, departing Thu, Oct 30 from Hartsfield-Jackson Atlanta Intl. to Denver Intl., returning Mon, Nov 3, priced at $180 found 1 hour ago

Frequently asked questions

What route does flight number UA340 take?
Flight number UA340 takes 3 hours and 23 minutes to fly direct from ATL to Denver Intl. Airport (DEN). We all know there's magic in the destination, but the journey is always half the fun!
How often is UA340 on time?
If you've booked tickets with United Airlines flight number UA340 between Atlanta, GA Airport (ATL-Hartsfield-Jackson Atlanta Intl.) and Denver Intl. Airport (DEN), 90% of these services take off on schedule. If you happen to be delayed, the wait time is around 15 minutes on average. Thanks to this carrier's top-quality service, this trip has a star rating of 4.3.
What terminal does UA340 fly out of?
You'll likely be taking off from Terminal N if you're flying on UA340 direct from Hartsfield-Jackson Atlanta Intl. Airport (ATL) to Denver Intl. Airport (DEN).
What kind of plane is on flight number UA340?
Get set to step aboard an Airbus A320 if you've reserved a seat on flight UA340. Almost all services from Hartsfield--Jackson Atlanta International Airport to Denver, CO Airport (DEN-Denver Intl.) operate using this kind of aircraft.
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 UA340 flight with Travelocity, please visit our Customer Service Portal.