United Flight 478 Deals & Information (2026/2027)

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United Flight 478 Route Deals From $241

The cheapest prices found with in the last 7 days for return flights were $231 and $241 for one-way flights to Denver Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$231 Roundtrip, found 6 days ago
$231
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $231 found 6 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$240 Roundtrip, found 6 days ago
$240
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $240 found 6 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$245 Roundtrip, found 6 days ago
$245
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $245 found 6 days ago
Fri, Apr 17 - Sun, Apr 19
BIL
Logan Intl.
DEN
Denver Intl.
$246 Roundtrip, found 6 days ago
$246
Roundtrip
found 6 days ago
Select United flight, departing Fri, Apr 17 from Logan Intl. to Denver Intl., returning Sun, Apr 19, priced at $246 found 6 days ago
Tue, Jun 16 - Sun, Jun 21
BIL
Logan Intl.
DEN
Denver Intl.
$256 Roundtrip, found 7 hours ago
$256
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Jun 16 from Logan Intl. to Denver Intl., returning Sun, Jun 21, priced at $256 found 7 hours ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$260 Roundtrip, found 6 days ago
$260
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $260 found 6 days ago
Fri, Apr 24 - Sat, Apr 25
BIL
Logan Intl.
DEN
Denver Intl.
$266 Roundtrip, found 13 hours ago
$266
Roundtrip
found 13 hours ago
Select United flight, departing Fri, Apr 24 from Logan Intl. to Denver Intl., returning Sat, Apr 25, priced at $266 found 13 hours ago
Tue, Jun 16 - Sun, Jun 21
BIL
Logan Intl.
DEN
Denver Intl.
$267 Roundtrip, found 7 hours ago
$267
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Jun 16 from Logan Intl. to Denver Intl., returning Sun, Jun 21, priced at $267 found 7 hours ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $269 found 6 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$270 Roundtrip, found 6 days ago
$270
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $270 found 6 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$273 Roundtrip, found 6 days ago
$273
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $273 found 6 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$274 Roundtrip, found 6 days ago
$274
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $274 found 6 days ago
Fri, Apr 10 - Sun, Apr 12
BIL
Logan Intl.
DEN
Denver Intl.
$278 Roundtrip, found 14 hours ago
$278
Roundtrip
found 14 hours ago
Select United flight, departing Fri, Apr 10 from Logan Intl. to Denver Intl., returning Sun, Apr 12, priced at $278 found 14 hours ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$279 Roundtrip, found 6 days ago
$279
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $279 found 6 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$284 Roundtrip, found 6 days ago
$284
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $284 found 6 days ago
Fri, May 22 - Mon, May 25
BIL
Logan Intl.
DEN
Denver Intl.
$286 Roundtrip, found 6 days ago
$286
Roundtrip
found 6 days ago
Select United flight, departing Fri, May 22 from Logan Intl. to Denver Intl., returning Mon, May 25, priced at $286 found 6 days ago
Fri, Apr 3 - Mon, Apr 6
BIL
Logan Intl.
DEN
Denver Intl.
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select United flight, departing Fri, Apr 3 from Logan Intl. to Denver Intl., returning Mon, Apr 6, priced at $293 found 1 day ago
Fri, Apr 24 - Sat, Apr 25
BIL
Logan Intl.
DEN
Denver Intl.
$297 Roundtrip, found 13 hours ago
$297
Roundtrip
found 13 hours ago
Select United flight, departing Fri, Apr 24 from Logan Intl. to Denver Intl., returning Sat, Apr 25, priced at $297 found 13 hours ago
Fri, Apr 17 - Sun, Apr 19
BIL
Logan Intl.
DEN
Denver Intl.
$309 Roundtrip, found 6 days ago
$309
Roundtrip
found 6 days ago
Select United flight, departing Fri, Apr 17 from Logan Intl. to Denver Intl., returning Sun, Apr 19, priced at $309 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.