United Flight 478 Deals & Information (2026/2027)

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United Flight 478 Route Deals From $248

The cheapest prices found with in the last 7 days for return flights were $249 and $248 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Jul 31 - Sun, Aug 2
BIL
Logan Intl.
DEN
Denver Intl.
$249 Roundtrip, found 1 day ago
$249
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 31 from Logan Intl. to Denver Intl., returning Sun, Aug 2, priced at $249 found 1 day ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$255 Roundtrip, found 6 days ago
$255
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $255 found 6 days ago
Fri, Oct 2 - Sun, Oct 4
BIL
Logan Intl.
DEN
Denver Intl.
$258 Roundtrip, found 4 days ago
$258
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 2 from Logan Intl. to Denver Intl., returning Sun, Oct 4, priced at $258 found 4 days ago
Fri, Oct 2 - Sun, Oct 4
BIL
Logan Intl.
DEN
Denver Intl.
$262 Roundtrip, found 4 days ago
$262
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 2 from Logan Intl. to Denver Intl., returning Sun, Oct 4, priced at $262 found 4 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$268 Roundtrip, found 6 days ago
$268
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $268 found 6 days ago
Tue, May 19 - Tue, May 26
BIL
Logan Intl.
DEN
Denver Intl.
$270 Roundtrip, found 2 days ago
$270
Roundtrip
found 2 days ago
Select United flight, departing Tue, May 19 from Logan Intl. to Denver Intl., returning Tue, May 26, priced at $270 found 2 days ago
Fri, Jul 31 - Sun, Aug 2
BIL
Logan Intl.
DEN
Denver Intl.
$277 Roundtrip, found 1 day ago
$277
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jul 31 from Logan Intl. to Denver Intl., returning Sun, Aug 2, priced at $277 found 1 day ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$278 Roundtrip, found 6 days ago
$278
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $278 found 6 days ago
Sun, May 17 - Sun, May 24
BIL
Logan Intl.
DEN
Denver Intl.
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select United flight, departing Sun, May 17 from Logan Intl. to Denver Intl., returning Sun, May 24, priced at $279 found 2 days ago
Fri, May 15 - Sun, May 17
BIL
Logan Intl.
DEN
Denver Intl.
$286 Roundtrip, found 5 days ago
$286
Roundtrip
found 5 days ago
Select United flight, departing Fri, May 15 from Logan Intl. to Denver Intl., returning Sun, May 17, priced at $286 found 5 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$287 Roundtrip, found 6 days ago
$287
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $287 found 6 days ago
Sat, Jun 20 - Thu, Jun 25
BIL
Logan Intl.
DEN
Denver Intl.
$288 Roundtrip, found 6 hours ago
$288
Roundtrip
found 6 hours ago
Select United flight, departing Sat, Jun 20 from Logan Intl. to Denver Intl., returning Thu, Jun 25, priced at $288 found 6 hours ago
Fri, Oct 2 - Sun, Oct 4
BIL
Logan Intl.
DEN
Denver Intl.
$292 Roundtrip, found 4 days ago
$292
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 2 from Logan Intl. to Denver Intl., returning Sun, Oct 4, priced at $292 found 4 days ago
Fri, Oct 2 - Sun, Oct 4
BIL
Logan Intl.
DEN
Denver Intl.
$293 Roundtrip, found 4 days ago
$293
Roundtrip
found 4 days ago
Select United flight, departing Fri, Oct 2 from Logan Intl. to Denver Intl., returning Sun, Oct 4, priced at $293 found 4 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$297 Roundtrip, found 6 days ago
$297
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $297 found 6 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.