United Flight 2420 Deals & Information (2025/2026)

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United Flight 2420 Route Deals From $79

The cheapest prices found with in the last 7 days for return flights were $160 and $79 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Aug 13 - Sat, Aug 16
SFO
San Francisco Intl.
DEN
Denver Intl.
$160 Roundtrip, found 14 hours ago
$160
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Aug 13 from San Francisco Intl. to Denver Intl., returning Sat, Aug 16, priced at $160 found 14 hours ago
Wed, Aug 13 - Sat, Aug 16
SFO
San Francisco Intl.
DEN
Denver Intl.
$174 Roundtrip, found 14 hours ago
$174
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Aug 13 from San Francisco Intl. to Denver Intl., returning Sat, Aug 16, priced at $174 found 14 hours ago
Wed, Aug 13 - Sat, Aug 16
SFO
San Francisco Intl.
DEN
Denver Intl.
$180 Roundtrip, found 14 hours ago
$180
Roundtrip
found 14 hours ago
Select United flight, departing Wed, Aug 13 from San Francisco Intl. to Denver Intl., returning Sat, Aug 16, priced at $180 found 14 hours ago

Frequently asked questions

What route does flight number UA2420 take?
UA2420 jets from Houston, TX Airport (IAH-George Bush Intercontinental) to Chicago, IL Airport (ORD-O'Hare Intl.) directly. This trip typically takes 2 hours and 30 minutes.
What terminal does UA2420 fly out of?
Flight number UA2420 runs between IAH and ORD, and passengers with a seat on this flight normally take off from Terminal C.
What kind of plane is on flight number UA2420?
The Boeing 737-700 is the type of aircraft most often used for flight UA2420. This flight almost always heads off from IAH and arrives at O'Hare Airport.
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 UA2420 flight with Travelocity, please visit our Customer Service Portal.