United Flight 800 Deals & Information (2026/2027)

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United Flight 800 Route Deals From $99

The cheapest prices found with in the last 7 days for return flights were $191 and $99 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Dec 8 - Tue, Dec 15
BOS
Logan Intl.
DEN
Denver Intl.
$191 Roundtrip, found 17 hours ago
$191
Roundtrip
found 17 hours ago
Select United flight, departing Tue, Dec 8 from Logan Intl. to Denver Intl., returning Tue, Dec 15, priced at $191 found 17 hours ago
Tue, Dec 8 - Tue, Dec 15
BOS
Logan Intl.
DEN
Denver Intl.
$202 Roundtrip, found 17 hours ago
$202
Roundtrip
found 17 hours ago
Select United flight, departing Tue, Dec 8 from Logan Intl. to Denver Intl., returning Tue, Dec 15, priced at $202 found 17 hours ago
Tue, Sep 1 - Wed, Sep 2
BOS
Logan Intl.
DEN
Denver Intl.
$206 Roundtrip, found 1 day ago
$206
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 1 from Logan Intl. to Denver Intl., returning Wed, Sep 2, priced at $206 found 1 day ago
Wed, Sep 30 - Mon, Oct 5
BOS
Logan Intl.
DEN
Denver Intl.
$209 Roundtrip, found 9 hours ago
$209
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Sep 30 from Logan Intl. to Denver Intl., returning Mon, Oct 5, priced at $209 found 9 hours ago
Wed, Nov 11 - Mon, Nov 16
BOS
Logan Intl.
DEN
Denver Intl.
$225 Roundtrip, found 22 hours ago
$225
Roundtrip
found 22 hours ago
Select United flight, departing Wed, Nov 11 from Logan Intl. to Denver Intl., returning Mon, Nov 16, priced at $225 found 22 hours ago
Tue, Sep 1 - Wed, Sep 2
BOS
Logan Intl.
DEN
Denver Intl.
$230 Roundtrip, found 1 day ago
$230
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 1 from Logan Intl. to Denver Intl., returning Wed, Sep 2, priced at $230 found 1 day ago
Wed, Sep 30 - Mon, Oct 5
BOS
Logan Intl.
DEN
Denver Intl.
$237 Roundtrip, found 9 hours ago
$237
Roundtrip
found 9 hours ago
Select United flight, departing Wed, Sep 30 from Logan Intl. to Denver Intl., returning Mon, Oct 5, priced at $237 found 9 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.