United Flight 478 Deals & Information (2026/2027)

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United Flight 478 Route Deals From $269

The cheapest prices found with in the last 7 days for return flights were $325 and $269 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Dec 10 - Tue, Dec 15
BIL
Logan Intl.
DEN
Denver Intl.
$325 Roundtrip, found 3 hours ago
$325
Roundtrip
found 3 hours ago
Select United flight, departing Thu, Dec 10 from Logan Intl. to Denver Intl., returning Tue, Dec 15, priced at $325 found 3 hours ago
Thu, Dec 31 - Sat, Jan 2
BIL
Logan Intl.
DEN
Denver Intl.
$334 Roundtrip, found 10 hours ago
$334
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Dec 31 from Logan Intl. to Denver Intl., returning Sat, Jan 2, priced at $334 found 10 hours ago
Fri, Dec 11 - Mon, Dec 14
BIL
Logan Intl.
DEN
Denver Intl.
$335 Roundtrip, found 3 hours ago
$335
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Dec 11 from Logan Intl. to Denver Intl., returning Mon, Dec 14, priced at $335 found 3 hours ago
Fri, Dec 11 - Mon, Dec 14
BIL
Logan Intl.
DEN
Denver Intl.
$340 Roundtrip, found 3 hours ago
$340
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Dec 11 from Logan Intl. to Denver Intl., returning Mon, Dec 14, priced at $340 found 3 hours ago
Thu, Dec 24 - Sun, Dec 27
BIL
Logan Intl.
DEN
Denver Intl.
$341 Roundtrip, found 21 hours ago
$341
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Dec 24 from Logan Intl. to Denver Intl., returning Sun, Dec 27, priced at $341 found 21 hours ago
Thu, Dec 31 - Sat, Jan 2
BIL
Logan Intl.
DEN
Denver Intl.
$349 Roundtrip, found 10 hours ago
$349
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Dec 31 from Logan Intl. to Denver Intl., returning Sat, Jan 2, priced at $349 found 10 hours ago
Thu, Dec 31 - Sat, Jan 2
BIL
Logan Intl.
DEN
Denver Intl.
$350 Roundtrip, found 10 hours ago
$350
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Dec 31 from Logan Intl. to Denver Intl., returning Sat, Jan 2, priced at $350 found 10 hours ago
Fri, Dec 11 - Mon, Dec 14
BIL
Logan Intl.
DEN
Denver Intl.
$352 Roundtrip, found 3 hours ago
$352
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Dec 11 from Logan Intl. to Denver Intl., returning Mon, Dec 14, priced at $352 found 3 hours ago
Wed, Dec 23 - Sun, Dec 27
BIL
Logan Intl.
DEN
Denver Intl.
$361 Roundtrip, found 12 hours ago
$361
Roundtrip
found 12 hours ago
Select United flight, departing Wed, Dec 23 from Logan Intl. to Denver Intl., returning Sun, Dec 27, priced at $361 found 12 hours ago
Fri, Dec 11 - Mon, Dec 14
BIL
Logan Intl.
DEN
Denver Intl.
$362 Roundtrip, found 3 hours ago
$362
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Dec 11 from Logan Intl. to Denver Intl., returning Mon, Dec 14, priced at $362 found 3 hours ago
Fri, Nov 13 - Mon, Nov 16
BIL
Logan Intl.
DEN
Denver Intl.
$364 Roundtrip, found 1 day ago
$364
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 13 from Logan Intl. to Denver Intl., returning Mon, Nov 16, priced at $364 found 1 day ago
Thu, Dec 31 - Sat, Jan 2
BIL
Logan Intl.
DEN
Denver Intl.
$365 Roundtrip, found 10 hours ago
$365
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Dec 31 from Logan Intl. to Denver Intl., returning Sat, Jan 2, priced at $365 found 10 hours ago
Thu, Oct 22 - Sun, Oct 25
BIL
Logan Intl.
DEN
Denver Intl.
$367 Roundtrip, found 3 days ago
$367
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 22 from Logan Intl. to Denver Intl., returning Sun, Oct 25, priced at $367 found 3 days ago
Thu, Nov 19 - Sun, Nov 29
BIL
Logan Intl.
DEN
Denver Intl.
$368 Roundtrip, found 1 day ago
$368
Roundtrip
found 1 day ago
Select United flight, departing Thu, Nov 19 from Logan Intl. to Denver Intl., returning Sun, Nov 29, priced at $368 found 1 day ago
Mon, Oct 26 - Mon, Nov 2
BIL
Logan Intl.
DEN
Denver Intl.
$369 Roundtrip, found 12 hours ago
$369
Roundtrip
found 12 hours ago
Select United flight, departing Mon, Oct 26 from Logan Intl. to Denver Intl., returning Mon, Nov 2, priced at $369 found 12 hours ago
Fri, Dec 11 - Mon, Dec 14
BIL
Logan Intl.
DEN
Denver Intl.
$372 Roundtrip, found 3 hours ago
$372
Roundtrip
found 3 hours ago
Select United flight, departing Fri, Dec 11 from Logan Intl. to Denver Intl., returning Mon, Dec 14, priced at $372 found 3 hours ago
Thu, Oct 22 - Sun, Oct 25
BIL
Logan Intl.
DEN
Denver Intl.
$377 Roundtrip, found 3 days ago
$377
Roundtrip
found 3 days ago
Select United flight, departing Thu, Oct 22 from Logan Intl. to Denver Intl., returning Sun, Oct 25, priced at $377 found 3 days ago
Thu, Dec 24 - Sun, Dec 27
BIL
Logan Intl.
DEN
Denver Intl.
$381 Roundtrip, found 21 hours ago
$381
Roundtrip
found 21 hours ago
Select United flight, departing Thu, Dec 24 from Logan Intl. to Denver Intl., returning Sun, Dec 27, priced at $381 found 21 hours ago
Fri, Oct 23 - Sun, Oct 25
BIL
Logan Intl.
DEN
Denver Intl.
$383 Roundtrip, found 5 days ago
$383
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 23 from Logan Intl. to Denver Intl., returning Sun, Oct 25, priced at $383 found 5 days 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.