United Flight 318 Deals & Information (2025/2026)

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United Flight 318 Route Deals From $81

The cheapest prices found with in the last 7 days for return flights were $141 and $81 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Feb 19 - Sat, Feb 28
MIA
Miami Intl.
DEN
Denver Intl.
$141 Roundtrip, found 3 days ago
$141
Roundtrip
found 3 days ago
Select United flight, departing Thu, Feb 19 from Miami Intl. to Denver Intl., returning Sat, Feb 28, priced at $141 found 3 days ago
Wed, Feb 18 - Sun, Feb 22
MIA
Miami Intl.
DEN
Denver Intl.
$183 Roundtrip, found 20 hours ago
$183
Roundtrip
found 20 hours ago
Select United flight, departing Wed, Feb 18 from Miami Intl. to Denver Intl., returning Sun, Feb 22, priced at $183 found 20 hours ago

Frequently asked questions

What route does flight number UA318 take?
UA318 jets from Juan Santamaria Intl. Airport to Chicago, IL Airport (ORD-O'Hare Intl.) and flies direct. This journey usually takes 5 hours and 26 minutes.
What terminal does UA318 fly out of?
Travelers booked on flight number UA318 from SJO to Chicago, IL Airport (ORD-O'Hare Intl.) usually depart from Terminal M.
What kind of plane is on flight number UA318?
Get set to cruise the skies aboard a Boeing 737-800 if you're booked on flight UA318. Almost all services from Juan Santamaria Intl. Airport to Chicago, IL Airport (ORD-O'Hare 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 UA318 flight with Travelocity, please visit our Customer Service Portal.