United Flight 800 Deals & Information (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 800 Route Deals From $102

The cheapest prices found with in the last 7 days for return flights were $211 and $102 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Nov 3 - Wed, Nov 4
BOS
Logan Intl.
DEN
Denver Intl.
$211 Roundtrip, found 1 day ago
$211
Roundtrip
found 1 day ago
Select United flight, departing Tue, Nov 3 from Logan Intl. to Denver Intl., returning Wed, Nov 4, priced at $211 found 1 day ago
Tue, Sep 1 - Tue, Sep 8
BOS
Logan Intl.
DEN
Denver Intl.
$221 Roundtrip, found 7 hours ago
$221
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Sep 1 from Logan Intl. to Denver Intl., returning Tue, Sep 8, priced at $221 found 7 hours ago
Thu, Sep 3 - Sat, Sep 12
BOS
Logan Intl.
DEN
Denver Intl.
$243 Roundtrip, found 5 days ago
$243
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 3 from Logan Intl. to Denver Intl., returning Sat, Sep 12, priced at $243 found 5 days ago
Wed, Sep 23 - Fri, Sep 25
BOS
Logan Intl.
DEN
Denver Intl.
$249 Roundtrip, found 3 hours ago
$249
Roundtrip
found 3 hours ago
Select United flight, departing Wed, Sep 23 from Logan Intl. to Denver Intl., returning Fri, Sep 25, priced at $249 found 3 hours ago
Tue, Sep 1 - Tue, Sep 8
BOS
Logan Intl.
DEN
Denver Intl.
$250 Roundtrip, found 7 hours ago
$250
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Sep 1 from Logan Intl. to Denver Intl., returning Tue, Sep 8, priced at $250 found 7 hours ago
Wed, Aug 26 - Mon, Aug 31
BOS
Logan Intl.
DEN
Denver Intl.
$257 Roundtrip, found 4 hours ago
$257
Roundtrip
found 4 hours ago
Select United flight, departing Wed, Aug 26 from Logan Intl. to Denver Intl., returning Mon, Aug 31, priced at $257 found 4 hours ago

Frequently asked questions

What route does flight number UA800 take?
You'll be landing at O'Hare Intl. Airport (ORD) from Charleston Intl. Airport if you're traveling on flight number UA800. You'll be in the air for 2 hours and 28 minutes during this trip. It's also good to note that the flight conveniently operates non-stop.
What kind of plane is on flight number UA800?
Expect to cruise aboard an Airbus A319 if you're taking off on flight UA800. Most services from Charleston, SC Airport (CHS-Charleston Intl.) to O'Hare Intl. Airport (ORD) 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 UA800 flight with Travelocity, please visit our Customer Service Portal.