United Flight 478 Deals & Information (2026/2027)

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United Flight 478 Route Deals From $299

The cheapest prices found with in the last 7 days for return flights were $279 and $299 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jun 17 - Sun, Jun 20
BIL
Logan Intl.
DEN
Denver Intl.
$279 Roundtrip, found 3 days ago
$279
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jun 17 from Logan Intl. to Denver Intl., returning Sun, Jun 20, priced at $279 found 3 days ago
Mon, Feb 1 - Sun, Feb 28
BIL
Logan Intl.
DEN
Denver Intl.
$295 Roundtrip, found 3 days ago
$295
Roundtrip
found 3 days ago
Select United flight, departing Mon, Feb 1 from Logan Intl. to Denver Intl., returning Sun, Feb 28, priced at $295 found 3 days ago
Wed, Dec 30 - Sat, Jan 2
BIL
Logan Intl.
DEN
Denver Intl.
$299 Roundtrip, found 8 hours ago
$299
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Dec 30 from Logan Intl. to Denver Intl., returning Sat, Jan 2, priced at $299 found 8 hours ago
Fri, Oct 23 - Sun, Oct 25
BIL
Logan Intl.
DEN
Denver Intl.
$303 Roundtrip, found 15 hours ago
$303
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Oct 23 from Logan Intl. to Denver Intl., returning Sun, Oct 25, priced at $303 found 15 hours ago
Mon, Feb 1 - Sun, Feb 28
BIL
Logan Intl.
DEN
Denver Intl.
$309 Roundtrip, found 3 days ago
$309
Roundtrip
found 3 days ago
Select United flight, departing Mon, Feb 1 from Logan Intl. to Denver Intl., returning Sun, Feb 28, priced at $309 found 3 days ago
Fri, Oct 2 - Sun, Oct 4
BIL
Logan Intl.
DEN
Denver Intl.
$319 Roundtrip, found 1 hour ago
$319
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Oct 2 from Logan Intl. to Denver Intl., returning Sun, Oct 4, priced at $319 found 1 hour ago
Wed, Dec 30 - Sat, Jan 2
BIL
Logan Intl.
DEN
Denver Intl.
$320 Roundtrip, found 8 hours ago
$320
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Dec 30 from Logan Intl. to Denver Intl., returning Sat, Jan 2, priced at $320 found 8 hours ago
Wed, Nov 25 - Sat, Nov 28
BIL
Logan Intl.
DEN
Denver Intl.
$323 Roundtrip, found 15 hours ago
$323
Roundtrip
found 15 hours ago
Select United flight, departing Wed, Nov 25 from Logan Intl. to Denver Intl., returning Sat, Nov 28, priced at $323 found 15 hours ago
Wed, Oct 14 - Sat, Oct 17
BIL
Logan Intl.
DEN
Denver Intl.
$325 Roundtrip, found 1 day ago
$325
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 14 from Logan Intl. to Denver Intl., returning Sat, Oct 17, priced at $325 found 1 day ago
Fri, Oct 9 - Mon, Oct 12
BIL
Logan Intl.
DEN
Denver Intl.
$327 Roundtrip, found 1 day ago
$327
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 9 from Logan Intl. to Denver Intl., returning Mon, Oct 12, priced at $327 found 1 day ago
Wed, Dec 30 - Sat, Jan 2
BIL
Logan Intl.
DEN
Denver Intl.
$328 Roundtrip, found 8 hours ago
$328
Roundtrip
found 8 hours ago
Select United flight, departing Wed, Dec 30 from Logan Intl. to Denver Intl., returning Sat, Jan 2, priced at $328 found 8 hours ago
Fri, Oct 2 - Sun, Oct 4
BIL
Logan Intl.
DEN
Denver Intl.
$333 Roundtrip, found 1 hour ago
$333
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Oct 2 from Logan Intl. to Denver Intl., returning Sun, Oct 4, priced at $333 found 1 hour ago
Fri, Oct 2 - Sun, Oct 4
BIL
Logan Intl.
DEN
Denver Intl.
$335 Roundtrip, found 1 hour ago
$335
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Oct 2 from Logan Intl. to Denver Intl., returning Sun, Oct 4, priced at $335 found 1 hour ago
Thu, Jun 17 - Sun, Jun 20
BIL
Logan Intl.
DEN
Denver Intl.
$338 Roundtrip, found 3 days ago
$338
Roundtrip
found 3 days ago
Select United flight, departing Thu, Jun 17 from Logan Intl. to Denver Intl., returning Sun, Jun 20, priced at $338 found 3 days ago
Thu, Dec 24 - Mon, Dec 28
BIL
Logan Intl.
DEN
Denver Intl.
$339 Roundtrip, found 15 hours ago
$339
Roundtrip
found 15 hours ago
Select United flight, departing Thu, Dec 24 from Logan Intl. to Denver Intl., returning Mon, Dec 28, priced at $339 found 15 hours ago
Fri, Oct 2 - Sun, Oct 4
BIL
Logan Intl.
DEN
Denver Intl.
$340 Roundtrip, found 1 hour ago
$340
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Oct 2 from Logan Intl. to Denver Intl., returning Sun, Oct 4, priced at $340 found 1 hour ago

Frequently asked questions

What route does flight number UA478 take?
Flight number UA478 flies directly from Denver, CO Airport (DEN-Denver Intl.) to ORD. During this journey, you can expect to be in the air for around 2 hours and 25 minutes. It's wise to book ahead to secure your favorite seat.
How often is UA478 on time?
If you're traveling on United Airlines flight number UA478 between Denver Intl. Airport (DEN) and O'Hare Intl. Airport (ORD), 86% of these trips run on schedule. In the rare event of a delay, the wait time is about 42 minutes on average. Thanks to the air carrier's quality service, this service has a star rating of 2.4.
What kind of plane is on flight number UA478?
Expect to step aboard a Boeing 737 MAX 9 if your flight number is UA478. Most services from DIA airport to O'Hare Airport use this aircraft type.
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 UA478 flight with Travelocity, please visit our Customer Service Portal.