United Flight 478 Deals & Information (2026/2027)

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United Flight 478 Route Deals From $279

The cheapest prices found with in the last 7 days for return flights were $319 and $279 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jan 1 - Wed, Jan 6
BIL
Logan Intl.
DEN
Denver Intl.
$319 Roundtrip, found 1 hour ago
$319
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Jan 1 from Logan Intl. to Denver Intl., returning Wed, Jan 6, priced at $319 found 1 hour ago
Thu, Dec 3 - Sun, Dec 6
BIL
Logan Intl.
DEN
Denver Intl.
$325 Roundtrip, found 2 days ago
$325
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 3 from Logan Intl. to Denver Intl., returning Sun, Dec 6, priced at $325 found 2 days ago
Fri, Dec 11 - Sun, Dec 13
BIL
Logan Intl.
DEN
Denver Intl.
$325 Roundtrip, found 3 days ago
$325
Roundtrip
found 3 days ago
Select United flight, departing Fri, Dec 11 from Logan Intl. to Denver Intl., returning Sun, Dec 13, priced at $325 found 3 days ago
Fri, Dec 4 - Sun, Dec 6
BIL
Logan Intl.
DEN
Denver Intl.
$331 Roundtrip, found 3 days ago
$331
Roundtrip
found 3 days ago
Select United flight, departing Fri, Dec 4 from Logan Intl. to Denver Intl., returning Sun, Dec 6, priced at $331 found 3 days ago
Thu, Dec 3 - Sun, Dec 6
BIL
Logan Intl.
DEN
Denver Intl.
$334 Roundtrip, found 2 days ago
$334
Roundtrip
found 2 days ago
Select United flight, departing Thu, Dec 3 from Logan Intl. to Denver Intl., returning Sun, Dec 6, priced at $334 found 2 days ago
Fri, Nov 13 - Sun, Nov 15
BIL
Logan Intl.
DEN
Denver Intl.
$340 Roundtrip, found 1 day ago
$340
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 13 from Logan Intl. to Denver Intl., returning Sun, Nov 15, priced at $340 found 1 day ago
Sun, Nov 8 - Sun, Nov 15
BIL
Logan Intl.
DEN
Denver Intl.
$342 Roundtrip, found 2 days ago
$342
Roundtrip
found 2 days ago
Select United flight, departing Sun, Nov 8 from Logan Intl. to Denver Intl., returning Sun, Nov 15, priced at $342 found 2 days ago
Fri, Jan 1 - Wed, Jan 6
BIL
Logan Intl.
DEN
Denver Intl.
$343 Roundtrip, found 1 hour ago
$343
Roundtrip
found 1 hour ago
Select United flight, departing Fri, Jan 1 from Logan Intl. to Denver Intl., returning Wed, Jan 6, priced at $343 found 1 hour ago
Thu, Jun 17 - Sun, Jun 20
BIL
Logan Intl.
DEN
Denver Intl.
$345 Roundtrip, found 2 days ago
$345
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jun 17 from Logan Intl. to Denver Intl., returning Sun, Jun 20, priced at $345 found 2 days ago
Sun, Nov 8 - Sun, Nov 15
BIL
Logan Intl.
DEN
Denver Intl.
$347 Roundtrip, found 2 days ago
$347
Roundtrip
found 2 days ago
Select United flight, departing Sun, Nov 8 from Logan Intl. to Denver Intl., returning Sun, Nov 15, priced at $347 found 2 days ago
Thu, Jan 21 - Sun, Jan 24
BIL
Logan Intl.
DEN
Denver Intl.
$350 Roundtrip, found 1 day ago
$350
Roundtrip
found 1 day ago
Select United flight, departing Thu, Jan 21 from Logan Intl. to Denver Intl., returning Sun, Jan 24, priced at $350 found 1 day ago
Mon, Nov 23 - Tue, Dec 1
BIL
Logan Intl.
DEN
Denver Intl.
$351 Roundtrip, found 6 days ago
$351
Roundtrip
found 6 days ago
Select United flight, departing Mon, Nov 23 from Logan Intl. to Denver Intl., returning Tue, Dec 1, priced at $351 found 6 days ago
Thu, Dec 24 - Sun, Dec 27
BIL
Logan Intl.
DEN
Denver Intl.
$352 Roundtrip, found 9 hours ago
$352
Roundtrip
found 9 hours ago
Select United flight, departing Thu, Dec 24 from Logan Intl. to Denver Intl., returning Sun, Dec 27, priced at $352 found 9 hours ago
Fri, Dec 4 - Sun, Dec 6
BIL
Logan Intl.
DEN
Denver Intl.
$356 Roundtrip, found 3 days ago
$356
Roundtrip
found 3 days ago
Select United flight, departing Fri, Dec 4 from Logan Intl. to Denver Intl., returning Sun, Dec 6, priced at $356 found 3 days ago
Mon, Nov 23 - Tue, Dec 1
BIL
Logan Intl.
DEN
Denver Intl.
$357 Roundtrip, found 6 days ago
$357
Roundtrip
found 6 days ago
Select United flight, departing Mon, Nov 23 from Logan Intl. to Denver Intl., returning Tue, Dec 1, priced at $357 found 6 days ago
Fri, Nov 20 - Mon, Nov 23
BIL
Logan Intl.
DEN
Denver Intl.
$358 Roundtrip, found 4 days ago
$358
Roundtrip
found 4 days ago
Select United flight, departing Fri, Nov 20 from Logan Intl. to Denver Intl., returning Mon, Nov 23, priced at $358 found 4 days ago
Sun, Nov 8 - Sun, Nov 15
BIL
Logan Intl.
DEN
Denver Intl.
$358 Roundtrip, found 2 days ago
$358
Roundtrip
found 2 days ago
Select United flight, departing Sun, Nov 8 from Logan Intl. to Denver Intl., returning Sun, Nov 15, priced at $358 found 2 days ago
Fri, Nov 13 - Sun, Nov 15
BIL
Logan Intl.
DEN
Denver Intl.
$362 Roundtrip, found 1 day ago
$362
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 13 from Logan Intl. to Denver Intl., returning Sun, Nov 15, priced at $362 found 1 day ago
Fri, Nov 20 - Mon, Nov 23
BIL
Logan Intl.
DEN
Denver Intl.
$363 Roundtrip, found 4 days ago
$363
Roundtrip
found 4 days ago
Select United flight, departing Fri, Nov 20 from Logan Intl. to Denver Intl., returning Mon, Nov 23, priced at $363 found 4 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.